CN219745840U - Section steel finishing mill synchronizer - Google Patents

Abstract

The utility model provides a synchronous device of a section steel finishing mill, belonging to the technical field of devices for section steel finishing equipment; the device comprises a machine body, wherein a plurality of groups of roller groups are arranged in the machine body, a driving mechanism is arranged on the machine body and drives the roller groups to work, a sliding mechanism is arranged between the driving mechanism and the machine body, so that the driving mechanism can move on the machine body, an adjusting driving mechanism is also arranged inside and outside the machine body, the adjusting driving mechanism can control the roller groups and the driving mechanism to synchronously move, and the roller groups, the driving mechanism, the sliding mechanism and the adjusting driving mechanism are the same in quantity and correspond to each other; the utility model can solve the problem of fluctuation of the dimensional tolerance of the section of the rolled section steel, accurately correct the dimension of the hot rolled product, ensure the consistency of the product, improve the compactness and the surface finish of the section steel and improve the production efficiency.

Description

Section steel finishing mill synchronizer

Technical Field

The utility model relates to the technical field of devices for profile steel finishing equipment, in particular to a synchronous device of a sliding block profile steel finishing mill.

Background

The rolling mill is used for processing rolled pieces to generate shaping deformation, is equipment for realizing a metal rolling process, and is used for passing through rotating working rolls, wherein the rotating working rolls apply shaping pressure to the rolled pieces so as to realize rolling.

The linear guide rail is also called a linear rail and a linear slide rail, is used for the occasion of linear reciprocating motion, can bear a certain torque, and can realize high-precision linear motion under the condition of high load. The linear guide rail pair is composed of guide rail, slide block, reverser, rolling body and retainer, and is a new type rolling bearing capable of making relative reciprocating linear motion, and can utilize the rolling of steel ball between slide block and guide rail to replace direct sliding contact, and the rolling body can implement infinite circulation in the rollaway nest and slide block by means of reverser, and has the advantages of simple structure, small dynamic and static friction coefficient, high positioning accuracy and good accuracy retention. The sliding block is used for supporting and guiding the moving part to do reciprocating linear motion according to a given direction.

The sliding block of the linear guide rail pair is generally formed by heating treatment of a single-piece forging post machine, and a small-size sectional forming process for drawing a strip material is also adopted. Machining the middle and large-size profile steel with a certain machining allowance, and cutting the profile steel bar into single pieces, and then machining and assembling the single pieces; the use of the slide block type steel has the advantages of low cost, high processing efficiency and the like, the slide block type steel is formed by directly heating a steel billet and rolling the steel billet by a roller, and the smaller the dimensional tolerance of the steel billet is, the lower the processing cost is for the manufacture of the slide block due to the characteristics of a hot rolling process. In view of the smaller and smaller dimensional tolerance requirements of section steel, the surface quality is also required to be higher.

The prior art section steel rolling has the following disadvantages: the section size of the rolled section steel fluctuates greatly and the subsequent section shape is not changed any more; in the automatic production, the produced profile steel has large size fluctuation and is not easy to use a standard tool for mass production; the surface finish of the produced section steel is insufficient, and the problems after the product electroplating are more obvious due to the quality problems of the surface products.

Disclosure of Invention

The utility model aims to solve the technical problem of large fluctuation of the size of rolled section steel and insufficient finish in the prior art by providing a section steel finishing mill synchronizing device.

In order to solve the technical problems, the utility model provides the following technical scheme:

the section steel finishing mill synchronizing device comprises a machine body, wherein a roller group is arranged in the machine body, a driving mechanism is arranged on the machine body and drives the roller group to work, and a sliding mechanism is arranged between the driving mechanism and the machine body so that the driving mechanism can move on the machine body; and an adjusting driving mechanism is arranged inside and outside the machine body, and the adjusting driving mechanism can control the roller group and the driving mechanism to synchronously move.

Preferably, the number of the roller groups, the driving mechanisms, the sliding mechanisms and the adjusting driving mechanisms is the same and corresponds to one, and at least two roller groups are provided.

Preferably, the roll sets are four groups, and the revolution axes of the four groups of roll sets are arranged in a cross shape; the rotation axes of the first roller groups are horizontally arranged, and the third roller groups form an included angle of 180 degrees with the rotation axes of the first roller groups; the rotation axes of the second roller group and the fourth roller group also form an included angle of 180 degrees; the rotation axes of the first roller group and the second roller group are orthogonal to form an included angle of 90 degrees; the four roller groups form a set of plane four-group roller system with square and coplanar rotation axes.

Preferably, the driving mechanism comprises a servo spindle motor, the servo spindle motor is connected with and drives a main transmission speed reducer, the main transmission speed reducer is connected with a transmission shaft, the transmission shaft is coaxially assembled in a transmission sleeve, and the transmission sleeve is connected with the corresponding roller group.

Preferably, the transmission shaft and the main transmission speed reducer move in the same direction and at the same speed when the rollers in the roller group move.

Preferably, the roller group comprises a roller frame, a roller is arranged on the roller frame, a pressing nut is arranged at the end part of the roller frame, the pressing nut is screwed with one end of a pressing screw rod, and a pressing gear is tightly arranged at the other end of the pressing screw rod; and when the pressing screw rod rotates, the pressing nut is driven to move so as to drive the roller frame to move.

Preferably, the sliding mechanism comprises a linear guide rail pair, the linear guide rail pair is arranged on a base plate of the machine body, a sliding base plate is arranged on a sliding block on the linear guide rail pair, a sliding base plate nut is arranged on the sliding base plate, and the sliding base plate nut and a sliding base plate moving screw rod form screw nut matching; the end part of the sliding base plate moving screw rod is matched with a moving screw rod gear, and when the moving screw rod gear is driven to rotate, the sliding base plate moving screw rod is driven to rotate, so that the sliding base plate on the sliding base plate nut moves; the main transmission speed reducer is arranged on the sliding base plate.

Preferably, the adjusting driving mechanism comprises an adjusting speed reducer, an output shaft of the adjusting speed reducer is arranged in the machine body, an adjusting driving bevel gear and a driven bevel gear are arranged on the shaft and are in meshed fit, and the driven bevel gear is connected with a driving adjusting gear through a transmission shaft, namely the adjusting speed reducer provides power for the driving adjusting gear; the driving adjusting gear is connected with the pressing gear through a first transition gear and is meshed with the pressing gear and the first transition gear, and the driving adjusting gear drives the pressing gear to rotate when rotating, so that the pressing screw is driven to rotate, and the pressing nut is driven to move so as to drive the roller frame to move; the driving adjusting gear is connected with the movable screw gear through a transition gear II, the movable screw gear, the transition gear II and the movable screw gear are meshed and matched, and the driving adjusting gear drives the movable screw gear to rotate when rotating, so that the sliding base plate is driven to move with the main transmission speed reducer.

Preferably, the driving adjusting gear drives the pressing gear and the moving screw gear to rotate simultaneously, namely drives two sets of actions simultaneously, drives the roller frame to move so as to finish pressing or lifting of the roller in the roller frame, and simultaneously enables the transmission shaft driven by the main transmission speed reducer to move synchronously, so that rotation and movement of the roller can be performed simultaneously.

Preferably, the plane of the central axis of the pressing screw rod, the sliding base plate moving screw rod and the transmission shaft is coplanar with the plane of the central line of the roller.

Compared with the prior art, the utility model has at least the following beneficial effects:

in the scheme, a precise cold rolling process is added to the rolling of the steel, so that the problem of fluctuation of the section size tolerance of the section steel is solved, the size of a hot rolled product is accurately corrected, and the consistency of the product is ensured; the compactness of the section steel is improved, so that the mechanical strength is improved, and the surface smoothness is increased; the rolled section steel has good dimensional consistency, can be processed by an automatic production line, improves the production efficiency and reduces the production cost.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

FIG. 1 is an isometric view of a steel strip rolled by a synchronous device of a section steel finishing mill according to one embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of a synchronous apparatus for a section steel finishing mill according to an embodiment of the present utility model;

FIG. 3 is a semi-sectional elevation view of a section steel finishing mill synchronizing device according to one embodiment of the utility model;

FIG. 4 is a rear view of a section mill synchronizing device according to an embodiment of the utility model;

fig. 5 is a schematic structural view of an adjusting driving mechanism of a synchronous device of a section steel finishing mill according to an embodiment of the present utility model.

[ reference numerals ]

1. A first roll set; 2. a second roll set; 3. a third roll set; 4. a fourth roll set; 5. a body; 6. pressing blocks of a rolling frame; 7. a main drive speed reducer; 8. a servo spindle motor; 9. a transmission shaft; 10. adjusting a speed reducer; 11. adjusting the driving bevel gear; 12. a driven bevel gear; 13. actively adjusting the gear; 14. pressing down the gear; 15. pressing down a lead screw; 16. pressing down the nut; 17. a sliding backing plate; 18. moving the lead screw gear; 19. the sliding backing plate moves the lead screw; 20. a transmission sleeve; 21. a roller; 22. and sliding the backing plate nut.

While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the utility model, this is for illustrative purposes only and is not intended to limit the utility model to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.

Detailed Description

The following describes a section steel finishing mill synchronizing device in detail with reference to the accompanying drawings and specific embodiments. While the utility model has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the utility model specifically.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.

It will be understood that the meanings of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" but also includes meaning "directly on" something with intervening features or layers therebetween, and "over … …" or "over … …" means not only "on" or "over" something, but also may include its meaning "on" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.

As shown in fig. 2 to 5, an embodiment of the present utility model provides a section steel finishing mill synchronization device, which includes a machine body 5, in which a roll set is installed in the machine body 5, and the number of the roll sets is at least two, and in this embodiment, four sets are preferred. The machine body 5 is provided with a driving mechanism, the driving mechanism can drive the roller group to work, a sliding mechanism is arranged between the driving mechanism and the machine body 5, the sliding mechanism enables the driving mechanism to slide on the machine body 5, an adjusting driving mechanism is further arranged inside and outside the machine body 5, the adjusting driving mechanism can control the roller group and the driving mechanism to synchronously move, and rollers 21 in the roller group can synchronously rotate and move.

The number of the roller groups, the driving mechanisms, the sliding mechanisms and the adjusting driving mechanisms is the same and corresponds to one, and the number of the roller groups, the driving mechanisms, the sliding mechanisms and the adjusting driving mechanisms is at least two, and the embodiment is preferably four. The rotation axes of the four roller groups are coplanar and are arranged in a cross shape; the rotation axes of the first roller group 1 are horizontally arranged, the third roller group 3 forms an included angle of 180 degrees with the rotation axes of the first roller group 1, and the rotation axes of the second roller group 2 and the fourth roller group 4 also form an included angle of 180 degrees; the rotation axes of the first roller group 1 and the second roller group 2 are orthogonal to form an included angle of 90 degrees, and the four roller groups form a set of plane four-group roller systems with square and coplanar rotation axes.

The machine body 5 is an integral forging steel piece, U-shaped through holes which are mutually perpendicular and perpendicular to the front and rear surfaces of the machine body 5 are processed in the machine body 5, and the positions of the U-shaped through holes are arranged according to the hole patterns of the rollers 21; the four groups of U-shaped through holes respectively form four groups of roller frame guide grooves of the roller groups, the size of the four groups of roller frame guide grooves is the same as the width size of the roller frame, and the four groups of roller frame guide grooves are in clearance fit, so that the four middle parts are intersected into a space to form a space for accommodating the roller groups; two symmetrical bolt holes and grooves are formed in the two sides outside each group of guide grooves in the front and rear of the machine body 5, and the roller frame pressing block 6 is fixed in the grooves by bolts, so that the roller frame is limited in the guide grooves and can only slide along the guide grooves due to the constraint of the guide grooves and the friction compaction of the roller frame pressing block 6, and the rotation stability of the roller 21 during rolling is ensured.

The rolls 21 in the four sets of roll groups are not only rotated with power, but also the rolls 21 are adjusted back and forth to be pressed and released to ensure the finish rolling size in order to ensure the rolling size of the section steel bar.

The driving mechanism comprises a servo spindle motor 8, the servo spindle motor 8 is connected with and drives a main transmission speed reducer 7, the main transmission speed reducer 7 is connected with a transmission shaft 9, the transmission shaft 9 is coaxially assembled in a transmission sleeve 20, and the transmission sleeve 20 is connected with a corresponding roller group. Namely, the servo spindle motor 8 and the main transmission reducer 7 provide power for the rollers 21 in the roller group to make the rollers work and rotate. Each set of roller group is driven by a servo spindle motor 8 to drive a main transmission speed reducer 7 through a transmission shaft 9, the transmission shaft 9 is coaxially assembled in a transmission sleeve 20, and the transmission sleeve 20 outputs torque to drive rollers 21 to rotate.

The roll group comprises a roll frame, a roll 21 is arranged on the roll frame, a pressing nut 16 is arranged at the end part of the roll frame, the pressing nut 16 is screwed with one end of a pressing screw rod 15, a pressing gear 14 is tightly arranged at the other end of the pressing screw rod 15, the pressing gear 14 is in running fit with the pressing screw rod 15, when the pressing gear 14 rotates, the pressing screw rod 15 can be driven to rotate, and when the pressing screw rod 15 is driven to rotate, the pressing nut 16 can be driven to move, so that the roll frame is driven to move back and forth, the pressing or loosening of the roll 21 is completed, and the aim of adjusting the rolling amount is fulfilled.

The sliding mechanism comprises linear guide pairs, the linear guide pairs are arranged on base plates on the machine body 5, sliding blocks are arranged on the linear guide pairs, sliding base plates 17 are arranged on the sliding blocks, 1 sliding base plate nut 22 is fastened on the sliding base plates 17, the number of the linear guide pairs is not limited to the embodiment, two groups are preferred, the number of the sliding blocks on each group of the linear guide pairs is not limited to the embodiment, two sliding blocks are preferred, and the moving direction of the sliding blocks is consistent with the adjusting direction of the roller 21. Because the sliding pad nut 22 is arranged on the sliding pad 17, the sliding pad moving screw 19 is arranged on the pad of the machine body 5, the sliding pad nut 22 and the sliding pad moving screw 19 form screw nut matching, the sliding pad moving screw 19 and the sliding pad nut 22 are matched by adopting a trapezoidal thread pair, the non-threaded end part of the sliding pad moving screw 19 is matched with the moving screw gear 18, and when the moving screw gear 18 is driven to rotate, the sliding pad moving screw 19 is driven to rotate, so that the sliding pad 17 on the sliding pad nut 22 does linear reciprocating motion; the main drive reducer 7 is mounted on the sliding pad 17 and moves accordingly.

As shown in fig. 4, the adjusting driving mechanism comprises an adjusting speed reducer 10, the adjusting speed reducer 10 is fixed at the back of the machine body 5, an output shaft of the adjusting speed reducer is installed in the machine body 5, and an adjusting driving bevel gear 11 and a driven bevel gear 12 are arranged on the shaft and are in meshed fit. The driven bevel gear 12 is coaxially connected with a driving adjusting gear 13 through a transmission shaft, and the adjusting speed reducer 10 provides power to enable the driving bevel gear 11 to rotate and transmit the power to the driven bevel gear 12 so as to enable the driving adjusting gear 13 to rotate; the driving adjusting gear 13 can realize two sets of actions by connecting two sets of parts, the driving adjusting gear 13 is connected with the pressing gear 14 through the first transition gear, and the three parts are meshed and matched, namely, the driving adjusting gear 13 can drive the pressing gear 14 to rotate when rotating, thereby driving the pressing screw rod 15 to rotate and further driving the pressing nut 16 to move so as to drive the roller frame to move, the pressing or loosening of the roller 21 is completed, and the purpose of adjusting the rolling amount is achieved.

The driving adjusting gear 13 is connected with a moving screw gear 18 through a transition gear II, and the three gears are meshed and matched, namely, the driving adjusting gear 13 drives the moving screw gear 18 to rotate when rotating, so that the moving screw 19 of the sliding pad plate also rotates, the nut 22 of the sliding pad plate drives the sliding pad plate 17 to linearly reciprocate through the linear guide rail pair, and the main transmission speed reducer 7 on the sliding pad plate 17 moves linearly. The adjusting speed reducer 10 provides power to drive the driving adjusting gear 13 to drive the pressing gear 14 and the moving screw gear 18 to rotate simultaneously, so that the movement of the roller frame and the movement of the main transmission speed reducer 7 are synchronously performed, namely, two sets of actions are simultaneously driven to drive the roller frame to move so as to finish the pressing or lifting of the roller 21, and simultaneously, the transmission shaft 9 driven by the main transmission speed reducer 7 moves synchronously, so that the rotation and the movement of the roller 21 can be simultaneously performed.

When the roller frame moves, the roller 21 in the roller frame moves downwards or upwards, at the moment, the roller 21 is also rotated by obtaining power through the transmission shaft 9, so that the transmission shaft 9 and the main transmission speed reducer 7 which are coaxially sleeved with the roller 21 do not influence the rotation, and therefore, a second set of motion is designed, the main transmission speed reducer 7 is driven to move along with the roller frame by the cooperation of the linear guide pair and the screw nut, the roller 21 synchronously completes the rotation and the movement, and the transmission shaft 9 and the main transmission speed reducer 7 also move at the same distance and the same direction and the same speed with the roller 21 when the roller 21 moves. The four sets of roll sets are all guaranteed to move synchronously, namely, each set of roll sets is provided with a corresponding adjusting driving mechanism and is controlled respectively.

The plane of the central axes of the pressing screw rod 15, the sliding base plate moving screw rod 19 and the transmission shaft 9 is coplanar with the plane of the central line of the roller 21. In order to ensure that the roller 21 and the transmission shaft 9 move in the same quantity, the same direction and the same speed, the synchronous motion can be realized by calculating and matching according to the transmission ratio and the rotation direction of the middle transmission chain and the screw pitches of the two screw thread pairs.

As shown in fig. 1, fig. 1 provides a product rolled by a synchronous device of a section steel finishing mill, a sliding block section steel, according to an embodiment of the utility model; the slide block section steel for the linear guide rail is a strip material which is symmetric in the left-right direction of the cross section shape, is flanged by flanges with certain thickness on two sides and has a length of a plurality of meters after hot rolling, and is subsequently cut off, machined and heat treated to be in a size meeting the requirements of a slide block finished product; the rolling process is a process in which the rolling material is pulled between rolls in different rotational directions by friction between the rolling material and the rolls to cause plastic deformation.

The utility model has the technical effects that a precise cold rolling process is added to the rolling of the steel, the problem of fluctuation of the section size tolerance of the section steel is solved, the size of a hot rolled product is accurately corrected, and the consistency of the product is ensured; the compactness of the section steel is improved, so that the mechanical strength is improved, and the surface smoothness is increased; the rolled section steel has good dimensional consistency, can be processed by an automatic production line, improves the production efficiency and reduces the production cost.

The utility model relates to a concrete working flow of a section steel finishing mill synchronizer, which comprises the following steps:

when the section steel is rolled, the roller is required to rotate to roll the strip, the servo spindle motor 8 provides power for the main transmission speed reducer 7 and transmits the power to the roller 21 through the transmission shaft 9 and the transmission sleeve 20 to enable the roller 21 to rotate, the pressure guarantees the rolling size, the synchronous adjusting device is designed, the speed reducer 10 is adjusted to provide power and transmits the power to the driving adjusting gear 13 through the driving bevel gear 11 and the driven bevel gear 12 when the roller 21 rotates, and the driving adjusting gear 13 outputs two sets of actions simultaneously; the first set of actions: the driving adjusting gear 13 transmits power to the pressing gear 14 through the first transition gear to rotate and drive the pressing screw rod 15 to rotate, so that the pressing nut 16 drives the roller frame to move, and the purpose of adjusting the rolling amount is achieved by pressing or loosening the roller 21; the second set of actions: the driving adjusting gear 13 transmits power to the moving screw gear 18 to rotate, and the sliding base plate moving screw 19 rotates along with the power to drive the main transmission reducer 7 on the sliding base plate 17 to do linear motion through the sliding base plate nut 22. The main transmission speed reducer 7 makes reciprocating rectilinear motion, that is, the transmission shaft 9 makes reciprocating rectilinear motion, and the distance of the motion direction is the same as and synchronous with the distance of the motion direction of the roller 21 in the first set of motion, and the roller 21 rotates while the two sets of motion work.

The roller groups work precisely, and the rolling movement of the rollers 21 is synchronous, so that the size of a hot rolled product can be corrected, the consistency of the product is ensured, the density of the profile steel is improved, and the produced profile steel has good consistency, so that the processing of an automatic production line can be realized, the production efficiency can be improved, and the cost can be reduced.

The utility model is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the utility model. In the following description of preferred embodiments of the utility model, specific details are set forth in order to provide a thorough understanding of the utility model, and the utility model will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present utility model.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (8)

1. The section steel finishing mill synchronizing device is characterized by comprising a machine body, wherein a roller group is arranged in the machine body, a driving mechanism is arranged on the machine body and drives the roller group to work, and a sliding mechanism is arranged between the driving mechanism and the machine body so that the driving mechanism can move on the machine body; and an adjusting driving mechanism is arranged inside and outside the machine body, and the adjusting driving mechanism can control the roller group and the driving mechanism to synchronously move.

2. The synchronous device of the section steel finishing mill according to claim 1, wherein the number of the roller groups, the driving mechanism, the sliding mechanism and the adjusting driving mechanism is the same and corresponds to one, and at least two groups are adopted.

3. The section steel finishing mill synchronizing device according to claim 1, wherein the driving mechanism comprises a servo spindle motor connected to and driving a main drive reducer connected to a drive shaft coaxially fitted in a drive housing connected to the corresponding roll set.

4. A section steel finishing mill synchronizing device according to claim 3, wherein the drive shaft and the main drive reducer are also moved in the same direction and at the same speed as the rolls in the roll set are moved.

5. The section steel finishing mill synchronizing device according to claim 3, wherein the roll group comprises a roll frame on which a roll is mounted, and a pressing nut is mounted at an end of the roll frame, the pressing nut is screwed with one end of a pressing screw, and the other end of the pressing screw is tightly provided with a pressing gear; and when the pressing screw rod rotates, the pressing nut is driven to move so as to drive the roller frame to move.

6. The section steel finishing mill synchronizing device according to claim 5, wherein the sliding mechanism comprises a linear guide rail pair, the linear guide rail pair is arranged on a base plate of the machine body, a sliding base plate is arranged on a sliding block on the linear guide rail pair, a sliding base plate nut is arranged on the sliding base plate, and the sliding base plate nut is matched with a sliding base plate moving screw rod to form a screw rod nut; the end part of the sliding base plate moving screw rod is matched with a moving screw rod gear, and when the moving screw rod gear is driven to rotate, the sliding base plate moving screw rod is driven to rotate, so that the sliding base plate on the sliding base plate nut moves; the main transmission speed reducer is arranged on the sliding base plate.

7. The section steel finishing mill synchronizing device according to claim 6, wherein the adjusting driving mechanism comprises an adjusting speed reducer, a shaft of the adjusting speed reducer is arranged in the machine body, an adjusting driving bevel gear and a driven bevel gear are arranged on the shaft and are in meshed fit, and the driven bevel gear is connected with a driving adjusting gear through a transmission shaft, namely the adjusting speed reducer provides power for the driving adjusting gear; the driving adjusting gear is connected with the pressing gear through a first transition gear and is meshed with the pressing gear and the first transition gear, and the driving adjusting gear drives the pressing gear to rotate when rotating, so that the pressing screw is driven to rotate, and the pressing nut is driven to move so as to drive the roller frame to move; the driving adjusting gear is connected with the movable screw gear through a transition gear II, the movable screw gear, the transition gear II and the movable screw gear are meshed and matched, and the driving adjusting gear drives the movable screw gear to rotate when rotating, so that the sliding base plate is driven to move with the main transmission speed reducer.

8. The synchronization device of the section steel finishing mill according to claim 7, wherein the driving adjusting gear drives the pressing gear and the moving screw gear to rotate simultaneously, namely drives two sets of actions simultaneously, drives the roller frame to move so as to finish pressing or lifting of a roller in the roller frame, and simultaneously enables the transmission shaft driven by the main transmission speed reducer to synchronously move, so that rotation and movement of the roller can be simultaneously carried out.