High-rigidity X-shaped roller box type six-roller mill

Abstract

The invention relates to the technical field of metal rolling machining equipment, and discloses a high-rigidity X-shaped roller box type six-roller mill, a high-rigidity integral rack comprises a rack main body, and the rack main body is provided with an assembly space and a strip inlet and outlet communicating with the two sides of the assembly space; the detachable roller box integrated structure comprises a roller box, the roller box is composed of a pair of roller box shells which are detachably connected, a roller system structure is detachably connected into the pair of roller box shells, and the roller system structure comprises four sectional supporting rollers, an upper working roller and a lower working roller. The upper working roll and the lower working roll are positioned among the four supporting rolls and are crossed with the four supporting rolls in an X shape; according to the strip cold rolling machine, the overall rigidity and the rolling precision can be remarkably improved, meanwhile, the maintenance convenience is enhanced, and the strip cold rolling machine is suitable for high-precision and high-efficiency strip cold rolling operation.

Description

Technical Field

[0001] The invention relates to the technical field of metal rolling processing equipment, in particular to a high-rigidity X-shaped roller box type six-roller rolling mill. Background Art

[0002] In the field of metal rolling, with the continuous improvement of the requirements for the precision and quality of metal strips, the performance of rolling mills faces higher challenges. Although the twenty-high mill can roll extremely thin strips (thickness ≤ 0.1mm), its raw material specifications are limited (usually the raw material thickness is required to be 0.3-2mm), the production efficiency is low (rolling speed <500m / min) and the equipment maintenance cost is high; the minimum rollable thickness of the traditional six-high mill is limited (≥0.1mm), which cannot meet the processing needs of extremely thin strips. In addition, the traditional six-high mill has problems such as insufficient frame rigidity, uneven rigidity distribution, poor roll system stability, and inconvenient maintenance, which lead to easy deformation of the frame during the rolling process, affecting the rolling accuracy and product quality. Therefore, there is an urgent need for a rolling mill with high rigidity, high precision, strong raw material adaptability and convenient maintenance. Summary of the Invention

[0003] The object of the present invention is to provide a high-rigidity X-type roller box type six-high rolling mill, aiming to solve or improve at least one of the above-mentioned technical problems.

[0004] To achieve the above object, the present invention provides the following solution: The present invention provides a high-rigidity X-shaped roller box type six-high rolling mill, comprising:

[0005] A high-rigidity integral frame includes a frame body, wherein the frame body is provided with an assembly space with two ends open and strip material inlets and outlets connected to both sides of the assembly space;

[0006] a detachable roller cassette integrated structure, comprising a roller cassette for installation in the assembly space, the roller cassette comprising a pair of detachably connected roller cassette shells, a roller system structure detachably connected within the pair of roller cassette shells, the roller system structure comprising four segmented support rollers, an upper working roller, and a lower working roller, the four support rollers being arranged in a rectangular array, the upper working roller and the lower working roller being located between the four support rollers and arranged in an X-shaped cross pattern with the four support rollers;

[0007] A transverse inclined wedge pressing mechanism is installed on the frame body through a reducer seat, and the transverse inclined wedge pressing mechanism is used to control the opening of the upper working roll and the lower working roll.

[0008] Optionally, a working roll bearing seat is installed in the assembly space via a pull rod spring, and the working roll bearing seat is used to be connected to the upper working roll.

[0009] Optionally, a transmission box is detachably connected to both sides of the roller box, and a radial adjustment mechanism is provided on the transmission box. The radial adjustment mechanism includes an upper adjustment mechanism and a lower adjustment mechanism respectively composed of two sets of worm gear systems. The upper adjustment mechanism and the lower adjustment mechanism are respectively coordinated with a pair of upper and lower corresponding support rollers.

[0010] Optionally, the worm gear system includes:

[0011] A worm gear, wherein the worm gear is provided with a pair of first worm wheels and a pair of gears, and the pair of gears are driven and matched with the support roller through meshing gear sleeves;

[0012] A pair of first worms are respectively engaged with the pair of first worm wheels. The first worms extend out of the frame body and are provided with operating handles.

[0013] Optionally, the support roller is detachably connected to the roller box housing via a support roller bearing and a support roller saddle.

[0014] Optionally, the transverse wedge pressing mechanism includes:

[0015] electric motor;

[0016] A reduction mechanism, comprising a primary reduction mechanism and a secondary reduction mechanism in transmission cooperation, wherein the primary reduction mechanism is in transmission cooperation with the output shaft of the motor;

[0017] The adjusting wedge is arranged in a groove opened on one side of the assembly space. The adjusting wedge includes a stopper, an active wedge and a driven wedge. The active wedge is coupled with the secondary reduction mechanism through a threaded transmission mechanism, and the driven wedge is arranged on the stopper.

[0018] Optionally, the first-stage reduction mechanism includes a first-stage worm and a first-stage worm wheel in transmission cooperation, the first-stage worm is connected to the output shaft of the motor through a coupling, and the first-stage worm wheel is in transmission cooperation with the second-stage reduction mechanism.

[0019] Optionally, the secondary reduction mechanism includes a secondary worm and a secondary worm wheel, the secondary worm is connected to the primary worm wheel via a coupling, and the secondary worm wheel is in transmission cooperation with the threaded transmission mechanism.

[0020] Optionally, the threaded transmission mechanism includes a transmission-matched lead screw thread and a lead screw nut, the lead screw thread is connected to the active wedge, and the lead screw nut is connected to the secondary worm gear.

[0021] Optionally, the support roller includes:

[0022] A core shaft is provided with a pair of said gear sleeves;

[0023] The outer ring structure includes a pair of outer outer rings and a pair of inner outer rings located between the pair of outer outer rings, the pair of outer outer rings are located between the pair of gear sleeves, the outer outer rings are connected to the core shaft through a first bearing, and the pair of inner outer rings are connected to the core shaft through a second bearing.

[0024] The present invention discloses the following technical effects:

[0025] The six-roll rolling mill of the present invention has lower requirements for the thickness of raw materials (usually 1mm-6mm) and is less sensitive to defects in raw material plates. A six-roll roll box is designed based on a roll box type twenty-roll rolling mill. While the main body size of the frame remains unchanged, the raw material specification range of the rolling mill is expanded by replacing the roll box, which greatly reduces the time required to replace different rolling mills when rolling extremely thin materials. At the same time, it also reduces the company's initial equipment investment, bringing great convenience to the company's manufacturing and processing.

[0026] The four support rolls, upper working roll and lower working roll are arranged in an X-shape. The rolling force is dispersed by the X-shaped roll system to improve rolling efficiency. The segmented support rolls can improve the plate shape control accuracy. The detachable roll box and segmented support roll design are convenient for disassembly and replacement, which shortens the roll changing time, ensures precise alignment and fast maintenance, and reduces maintenance costs. The segmented design of the support rolls can effectively cope with thermal expansion and mechanical deformation during the rolling process, extend the service life of the rolls, and significantly improve the overall stiffness and rolling accuracy through multi-structure collaborative innovation. At the same time, it enhances maintenance convenience and is suitable for high-precision and high-efficiency strip cold rolling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 Schematic diagram of the structure of the high-rigidity integral frame of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the detachable roller box integrated structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the roller system structure arrangement of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the roller box of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the worm gear system of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the transverse inclined wedge pressing mechanism of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the support roller of the present invention;

[0036] Figure 9 It is a cross-sectional view of the support roller of the present invention.

[0037] In the picture:

[0038] 1. High-rigidity integral frame; 11. Frame body; 12. Work roll bearing seat; 13. Tie rod spring; 111. Assembly space; 112. Groove; 113. Strip inlet and outlet;

[0039] 2. Detachable roller cassette integrated structure; 21. Roller system structure; 22. Roller cassette; 23. Radial adjustment mechanism; 24. Transmission box; 211. Support roller; 212. Upper working roller; 213. Lower working roller; 221. Roller cassette housing; 222. Support roller saddle; 223. Support roller bearing; 230. Worm gear system; 231. Upper adjustment mechanism; 232. Lower adjustment mechanism; 2301. First worm; 2302. First worm wheel; 2303. Gear; 2304. Worm gear;

[0040] 3. Horizontal wedge pressing mechanism; 31. Motor; 32. Speed ​​reduction mechanism; 33. Adjusting wedge; 34. Coupling; 35. Stopper; 36. Screw nut; 37. Speed ​​reducer base; 321. Primary speed reduction mechanism; 322. Secondary speed reduction mechanism; 331. Active wedge; 332. Driven wedge; 3211. Primary worm; 3212. Primary worm gear; 3221. Secondary worm; 3222. Secondary worm gear;

[0041] 41. Core shaft; 42. Outer ring structure; 43. Gear sleeve; 44. Bearing; 45. Second bearing; 421. Outer outer ring; 422. Inner outer ring. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Reference Figures 1-9 The present invention provides a high-rigidity X-shaped roller box type six-high rolling mill, comprising:

[0045] The high-rigidity integral frame 1 includes a frame body 11, which is provided with an assembly space 111 with both ends open and a strip material inlet and outlet 113 connected to both sides of the assembly space 111;

[0046] The detachable roller cassette integrated structure 2 includes a roller cassette 22 for installation in the assembly space. The roller cassette 22 is composed of a pair of detachably connected roller cassette shells 221. The pair of roller cassette shells 221 have a roller system structure 21 detachably connected thereto. The roller system structure 21 includes four segmented support rollers 211, an upper working roller 212, and a lower working roller 213. The four support rollers 211 are arranged in a rectangular array. The upper working roller 212 and the lower working roller 213 are located between the four support rollers 211 and arranged in an X-shaped cross pattern with the four support rollers 211.

[0047] The transverse inclined wedge pressing mechanism 3 is installed on the frame body 11 through the reducer base 37. The transverse inclined wedge pressing mechanism 3 is used to control the opening of the upper working roll 212 and the lower working roll 213.

[0048] The four support rolls 211, the upper working roll 212 and the lower working roll 213 are arranged in an X-shaped cross pattern. The rolling force is dispersed by the X-shaped roll system. Combined with the segmented support rolls 211, the plate shape control accuracy is improved. The design of the detachable roll box 22 and the segmented support rolls 211 shortens the roll changing time and reduces maintenance costs.

[0049] The transverse wedge pressing mechanism 3 can accurately adjust the opening of the upper working roll 212 and the lower working roll 213, realize fine adjustment of the position of the upper working roll 212 and the lower working roll 213, and improve the product dimensional accuracy and surface quality.

[0050] Furthermore, the frame body 11 is made of cast steel.

[0051] Furthermore, the pair of roller box shells 221 are connected by bolts and nuts, and a spring is provided in the gap between the pair of roller box shells 221.

[0052] In one embodiment of the present invention, a working roll bearing seat 12 is installed in the assembly space 111 through a pull rod spring 13. The working roll bearing seat 12 is used to connect with the upper working roll 212, and the lower working roll 213 is not installed with a bearing.

[0053] In one embodiment of the present invention, the two sides of the roller box 22 are detachably connected to the transmission box 24, and the transmission box 24 is provided with a radial adjustment mechanism 23. The radial adjustment mechanism 23 includes an upper adjustment mechanism 231 and a lower adjustment mechanism 232 respectively composed of two sets of worm gear systems 230. The upper adjustment mechanism 231 and the lower adjustment mechanism 232 are respectively coordinated with a pair of corresponding upper and lower support rollers 211 for transmission.

[0054] The radial adjustment mechanism 23 is not responsible for the plane radial or height radial movement of the upper working roll 212 and the lower working roll 213, but only for rotation. The purpose of the radial adjustment mechanism 23 is to rotate the upper working roll 212 and the lower working roll 213 by rotating the support roll 211, thereby reducing or eliminating the radial gap and poor meshing position between the support roll 211 and the upper working roll 212 and the lower working roll 213, so that the two mesh well, improve the transmission accuracy and stability during operation, and reduce meshing noise and impact noise.

[0055] In one embodiment of the present invention, the worm gear system 230 includes:

[0056] A worm gear 2304 is provided with a pair of first worm gears 2302 and a pair of gears 2303 . The pair of gears 2303 are in transmission cooperation with the support roller 211 through meshing gear sleeves 43 .

[0057] A pair of first worms 2301 are respectively engaged with a pair of first worm wheels 2302 . The first worms 2301 extend out of the frame body 11 and are provided with an operating handle.

[0058] The first worm gear 2302 and a pair of gears 2303 are fixed on the worm gear 2304 through flat keys, and the worm gear 2304 is installed in the transmission box 24.

[0059] The worm gear system 230 is fixed to the high-rigidity, integrated frame 1. When the first worm 2301 is rotated via the operating handle, the worm gear 2304 rotates, and gear 2303 also rotates accordingly. Because gear 2303 engages with the support roller 211 through the meshing gear sleeve 43, rotation of gear 2303 drives the support roller 211. The rotation of the support roller 211 in turn rotates the upper and lower work rolls 212 and 213, thereby adjusting the work rolls radially. The primary function of the radial adjustment mechanism 23 is to provide radially adjustable adjustment for the work rolls.

[0060] The support roll 211 drives the upper and lower work rolls 212 and 213 to rotate by contacting them. The upper work roll 212 contacts the two upper support rolls 211 via the pull rod spring 13 and the work roll bearing seat 12. The lower work roll 213 contacts the two lower support rolls 211 by its own weight.

[0061] In one embodiment of the present invention, the support roller 211 is detachably connected to the roller box housing 221 through the support roller bearing 223 and the support roller saddle 222 .

[0062] In one embodiment of the present invention, the transverse wedge pressing mechanism 3 includes:

[0063] Motor 31;

[0064] The reduction mechanism 32 includes a primary reduction mechanism 321 and a secondary reduction mechanism 322 that are in transmission cooperation. The primary reduction mechanism 321 is in transmission cooperation with the output shaft of the motor 31.

[0065] The adjusting wedge 33 is arranged in the groove 112 opened on one side of the assembly space 111. The adjusting wedge 33 includes a stopper 35, an active wedge 331 and a driven wedge 332. The active wedge 331 is transmitted and cooperated with the secondary reduction mechanism 322 through a threaded transmission mechanism, and the driven wedge 332 is arranged on the stopper 35.

[0066] The motor 31 and the reduction mechanism 32 of the transverse wedge pressing mechanism 3 are fixed to the high-rigidity integral frame 1, and the active wedge block 331 is connected to the secondary reduction mechanism 322. The motor 31 rotates, and the reduction mechanism 32 changes the forward or backward movement direction of the active wedge block 331. The driven wedge block 332 is restricted by the block 35 and cannot move forward or backward, and the driven wedge block 332 is in close contact with the roller box housing 221. When the active wedge block 331 moves forward or backward, it pushes the driven wedge block 332 to move in a direction perpendicular to the movement of the active wedge block 331 (that is, the active wedge block 331 moves forward and backward, and the driven wedge block 332 moves left and right), thereby pushing the roller box housing 221 close to the side of the driven wedge block 332 to move, so that the roller box housings 221 on both sides move closer to or away from each other.

[0067] The roller cassette housings 221 on both sides move closer to or further away from each other, changing the radial distance between the two support rollers 211, thereby causing the two support rollers 211 to move closer to or further away from each other in the radial direction. The radial movement of the two support rollers 211 closer to or further away from each other changes the radial movement of the upper working roller 212 and the lower working roller 213 closer to or further away from each other.

[0068] The transverse wedge pressing mechanism 3 adjusts the radial distance between the two support rollers 211 by adjusting the spacing of the roller box housing 221, thereby adjusting the opening degree of the upper working roller 212 and the lower working roller 213.

[0069] The transverse wedge pressing mechanism 3 is used to realize the radial precise movement of the upper working roll 212 and the lower working roll 213 in the height direction. The purpose of its movement is to change the radial distance between the upper working roll 212 and the lower working roll 213 in the height direction.

[0070] In one embodiment of the present invention, the first-stage reduction mechanism 321 includes a first-stage worm 3211 and a first-stage worm wheel 3212 that are in transmission cooperation. The first-stage worm 3211 is connected to the output shaft of the motor 31 through a coupling 34, and the first-stage worm wheel 3212 is in transmission cooperation with the second-stage reduction mechanism 322.

[0071] In one embodiment of the present invention, the secondary reduction mechanism 322 includes a secondary worm 3221 and a secondary worm wheel 3222 . The secondary worm 3221 is connected to the primary worm wheel 3212 via a coupling 34 . The secondary worm wheel 3222 is in transmission cooperation with the thread transmission mechanism.

[0072] In one embodiment of the present invention, the thread transmission mechanism includes a transmission-matched lead screw thread and a lead screw nut 36 , the lead screw thread is connected to the active wedge 331 , and the lead screw nut 36 is connected to the secondary worm gear 3222 .

[0073] The middle axis of the secondary worm gear 3222 is a hollow structure, and the screw nut 36 is fixedly connected to the secondary worm gear 3222 through a flat key to realize the conversion of rotational motion into linear motion.

[0074] In one embodiment of the present invention, the support roller comprises:

[0075] The core shaft 41 is provided with a pair of gear sleeves 43;

[0076] The outer ring structure 42 includes a pair of outer outer rings 421 and a pair of inner outer rings 422 located between the pair of outer outer rings 421. The pair of outer outer rings 421 are located between a pair of gear sleeves 43. The outer outer rings 421 are connected to the core shaft 41 through a first bearing 44, and the pair of inner outer rings 422 are connected to the core shaft 41 through a second bearing 45.

[0077] Furthermore, the core shaft 41 may be an eccentric shaft; and the gear sleeve 43 may be an eccentric gear sleeve.

[0078] If the core shaft 41 is an eccentric shaft, the core shaft 41 consists of a central shaft and an eccentric part. The central shaft is installed with the support roller bearing 223 and the gear sleeve 43, and the protruding step part is the eccentric part on the core shaft 41.

[0079] The core shaft 41 can be installed with an eccentric gear sleeve 43, and then a pair of outer outer rings 421 are installed on the eccentric gear sleeve 43. By changing the eccentricity of the eccentric gear sleeve 43, the eccentricity of the pair of outer outer rings 421 on the support roller 211 can be changed, thereby achieving the purpose of controlling the plate (belt) shape.

[0080] The eccentric motion can change the directional motion of the outer support roller 211, and can change the position, angle, and pressure distribution of the outer support roller 211 in contact with the upper working roller 212 and the lower working roller 213, thereby transmitting the force to the contact between the upper working roller 212 and the lower working roller 213 and the plate (strip), and changing the pressure distribution when the upper working roller 212 and the lower working roller 213 are in contact with the plate (strip). For example, when rolling plates (strips) of different thicknesses and materials, by adjusting the degree of eccentricity, the force exerted by the support roller 211 on the plate can be adapted to the processing requirements, so that the shape of the plate after rolling is more in line with the standard, such as controlling the straightness of the plate, to meet various production requirements. In short, the eccentric motion of the support roller 211 is used to flexibly adjust the rolling working state of the working roller. When rolling the plate (strip), the rolling force on the plate (strip) is more reasonably distributed, which can avoid local overpressure or underpressure of the plate (strip) and make the plate thickness more uniform.

[0081] In addition, when rolling the edge of the strip, the support roller 211 at the corresponding position is adjusted eccentrically to provide more support or pressure to the edge, control the shape of the edge of the plate, prevent defects such as edge waves, and accurately match the diverse plate shape control requirements.

[0082] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0083] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A high-rigidity X-type roller box type six-high rolling mill, characterized in that: include: A high-rigidity integral frame (1) comprises a frame body (11), wherein the frame body (11) is provided with an assembly space (111) with both ends open and strip material inlets and outlets (113) communicating with both sides of the assembly space (111); A detachable roller box integrated structure (2) comprises a roller box (22) for installation in the assembly space, the roller box (22) comprising a pair of detachably connected roller box shells (221), a roller system structure (21) detachably connected within the pair of roller box shells (221), the roller system structure (21) comprising four segmented support rollers (211), an upper working roller (212) and a lower working roller (213), the four support rollers (211) being distributed in a rectangular array, the upper working roller (212) and the lower working roller (213) being located between the four support rollers (211) and arranged in an X-shaped cross pattern with the four support rollers (211); A transverse inclined wedge pressing mechanism (3) is installed on the frame body (11) through a speed reducer seat (37). The transverse inclined wedge pressing mechanism (3) is used to control the opening of the upper working roll (212) and the lower working roll (213).

2. A high rigidity X-type roller box type six-high rolling mill according to claim 1, characterized in that: A working roll bearing seat (12) is installed in the assembly space (111) via a pull rod spring (13), and the working roll bearing seat (12) is used to be connected to the upper working roll (212).

3. A high rigidity X-type roller box type six-high rolling mill according to claim 1, characterized in that: The roller box (22) is detachably connected to a transmission box (24) on both sides. A radial adjustment mechanism (23) is provided on the transmission box (24). The radial adjustment mechanism (23) includes an upper adjustment mechanism (231) and a lower adjustment mechanism (232) respectively composed of two groups of worm gear systems (230). The upper adjustment mechanism (231) and the lower adjustment mechanism (232) are respectively coupled with a pair of upper and lower corresponding support rollers (211) in transmission.

4. A high rigidity X-type roller box type six-high rolling mill according to claim 3, characterized in that: The worm gear system (230) includes: A worm gear (2304), wherein the worm gear (2304) is provided with a pair of first worm wheels (2302) and a pair of gears (2303), and the pair of gears (2303) are driven and matched with the support roller (211) through meshing gear sleeves (43); A pair of first worms (2301) are respectively engaged with a pair of first worm wheels (2302); the first worms (2301) extend out of the frame body (11) and are provided with an operating handle.

5. The high-rigidity X-type roller box type six-high rolling mill according to claim 1, characterized in that: The support roller (211) is detachably connected to the roller box housing (221) via a support roller bearing (223) and a support roller saddle (222).

6. A high rigidity X-type roller box type six-high rolling mill according to claim 1, characterized in that: The transverse wedge pressing mechanism (3) comprises: Motor (31); The reduction mechanism (32) includes a primary reduction mechanism (321) and a secondary reduction mechanism (322) in transmission cooperation, wherein the primary reduction mechanism (321) is in transmission cooperation with the output shaft of the motor (31); An adjusting wedge (33) is arranged in a groove (112) opened on one side of the assembly space (111). The adjusting wedge (33) includes a stopper (35), an active wedge (331) and a driven wedge (332). The active wedge (331) is coupled to the secondary reduction mechanism (322) through a threaded transmission mechanism, and the driven wedge (332) is arranged on the stopper (35).

7. A high rigidity X-type roller box type six-high rolling mill according to claim 6, characterized in that: The first-stage reduction mechanism (321) includes a first-stage worm (3211) and a first-stage worm wheel (3212) in transmission cooperation. The first-stage worm (3211) is connected to the output shaft of the motor (31) via a coupling (34), and the first-stage worm wheel (3212) is in transmission cooperation with the second-stage reduction mechanism (322).

8. The high-rigidity X-type roller box type six-high rolling mill according to claim 7, characterized in that: The secondary reduction mechanism (322) includes a secondary worm (3221) and a secondary worm wheel (3222); the secondary worm (3221) is connected to the primary worm wheel (3212) via a coupling (34); and the secondary worm wheel (3222) is in transmission cooperation with the threaded transmission mechanism.

9. The high-rigidity X-type roller box type six-high rolling mill according to claim 8, characterized in that: The thread transmission mechanism comprises a transmission-matched lead screw thread and a lead screw nut (36), wherein the lead screw thread is connected to the active wedge (331), and the lead screw nut (36) is connected to the secondary worm gear (3222).

10. The high-rigidity X-type roller box type six-high rolling mill according to claim 4, characterized in that: The support roller comprises: A core shaft (41) is provided with a pair of gear sleeves (43); The outer ring structure (42) includes a pair of outer outer rings (421) and a pair of inner outer rings (422) located between the pair of outer outer rings (421), wherein the pair of outer outer rings (421) are located between a pair of gear sleeves (43), the outer outer rings (421) are connected to the core shaft (41) through a first bearing (44), and the pair of inner outer rings (422) are connected to the core shaft (41) through a second bearing (45).

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