Combined unit with edge cutting and transverse cutting functions for steel production

Abstract

The steel production combined unit with the edge cutting and transverse cutting functions comprises a mounting frame, a supporting plate, a second protection shell and a transverse cutting assembly, a first transmission roller is mounted on the upper side of the rear end of the mounting frame, a second transmission roller is arranged on the inner side of the front end of the mounting frame, and an adjusting rod is rotationally mounted at the lower end of the inner side of the mounting frame; an edge cutting assembly is arranged on the outer side of the adjusting rod; a supporting plate is fixedly mounted in the middle of the inner side of the mounting frame, and a mounting block is slidably mounted in the supporting plate. The invention belongs to the technical field of steel production, and aims at solving the problems that in the prior art, the contact area of a saw blade and steel is insufficient, meanwhile, the side edge of the steel cannot be limited, the steel is prone to deviation in the edge cutting process, and the edge cutting effect is affected. The device has the technical effects that the contact area of the saw blade and the steel can be increased, meanwhile, the two sides of the steel can be conveniently limited at the same time, and deviation of the steel during edge cutting is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of steel production, and particularly relates to a combined unit for steel production with a trimming and transverse cutting function. Background Art

[0002] In the field of steel production, with the continuous progress of industrial technology and the diversified development of market demands, the requirements for the functionality, precision, and efficiency of steel processing equipment are increasing day by day. It is necessary to adopt a combined unit to integrate two key processing functions, namely trimming and transverse cutting, into one. Currently, combined units are mainly used for processing flat steel with relatively thin thickness and long length.

[0003] The trimming operation is mainly to remove the excess parts at the edges of the steel to ensure that the thickness of the steel is relatively thin and meets the specified dimensions, and the edges are neat and uniform; while the transverse cutting operation is to cut the steel according to a preset length to meet the product requirements of different length specifications. During operation, the steel enters the unit driven by a transmission device. First, the trimming assembly precisely cuts off the two side edges of the steel. Subsequently, through the transverse cutting assembly, the steel is cut off according to the preset length. During the whole process, the actions of each component are precisely coordinated through an advanced control system to ensure the accuracy and efficiency of processing.

[0004] For example, a trimming device for processing stainless steel strips with the Chinese authorized publication number CN 212398317 U discloses a trimming device that can perform trimming processing on the edges of stainless steel strips without generating burrs, so that the whole device has the effect of cutting out stainless steel strips with different relatively thin thicknesses.

[0005] However, currently, most combined units for steel production generally have the problem that the contact area between the saw blade and the steel is insufficient during trimming, resulting in a sudden increase in the pressure per unit area at the edge of the steel during trimming, which easily causes plastic deformation due to stress concentration, and then obvious burrs and edge collapse are formed. At the same time, during trimming, only the middle part of the steel can be limited, and the side of the steel cannot be limited, resulting in the steel being prone to offset during trimming, thus affecting the trimming effect. Summary of the Invention

[0006] Therefore, the present invention provides a combined unit for steel production with a trimming and transverse cutting function to solve the existing problems that the contact area between the saw blade and the steel is insufficient, and at the same time, the side of the steel cannot be limited, resulting in the steel being prone to offset during trimming, thus affecting the trimming effect.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A combined unit for steel production with a trimming and cross-cutting function, comprising an installation frame, a support plate, a second protective shell and a cross-cutting assembly. On the upper side of the rear end of the installation frame, a first driving roller is installed, and on the inner side of the front end of the installation frame, a second driving roller is arranged. At the lower end inside the installation frame, an adjusting rod is rotatably installed, and a trimming assembly is arranged on the outer side of the adjusting rod.

[0009] In the middle of the inner side of the installation frame, a support plate is fixedly installed. At the rear side of the upper end of the support plate, a guiding roller is rotatably arranged. Inside the support plate, a mounting block is slidably installed, and a positioning plate is arranged inside the mounting block. In the middle of the upper end of the installation frame, a first limiting assembly is installed above the middle of the support plate.

[0010] On the outer ends of both sides of the installation frame, second protective shells are fixedly installed, and inside the second protective shells, second limiting assemblies are installed on both sides of the support plate.

[0011] On the outer side of the front end of the installation frame, a cross-cutting assembly is installed, and winding rollers are rotatably installed on both sides of the cross-cutting assembly.

[0012] Furthermore, the height dimension of the second driving roller is lower than that of the first driving roller, and the upper ends of the first driving roller and the guiding roller are flush. Driving assemblies are connected to the outer sides of both the first driving roller and the second driving roller.

[0013] Furthermore, the trimming assembly includes a first fixing frame, an electro-hydraulic rod, a first protective shell and a saw blade. The first fixing frame is installed inside the installation frame and on the outer side of the adjusting rod. In the middle of the upper end of the first fixing frame, an electro-hydraulic rod is installed, and the output end of the electro-hydraulic rod is connected to the first protective shell.

[0014] Furthermore, a driving assembly is also arranged inside the first protective shell, and a saw blade is arranged inside the rear side of the driving assembly. On the outer side of the first protective shell, a fixed side plate for supporting the saw blade is integrally and fixedly installed.

[0015] Furthermore, the first limiting assembly includes a second fixing frame and a first limiting roller. The second fixing frame is fixedly installed in the middle of the upper end of the installation frame, and an electro-hydraulic rod is also arranged in the middle of the inner side of the second fixing frame. The output end of the electro-hydraulic rod is installed with the first limiting roller.

[0016] Furthermore, the second limiting assembly includes a damper, a mounting ring, a second limiting roller and a connecting plate. The damper is installed inside the installation frame, and a mounting ring is installed on the outer side of the upper end of the damper. The mounting ring is slidably installed inside the installation frame.

[0017] Further, a second limiting roller is arranged inside the mounting ring through a bearing, and one end of the second limiting roller close to the saw blade is installed with an adapter plate through a bearing. The adapter plate extends into the fixed side plate, and the adapter plate is connected to the fixed side plate in a sliding manner.

[0018] Further, the mounting block is connected to the support plate in a sliding manner, and one side of the mounting block close to the first fixing frame is fixedly connected to it by screws. The mounting block is located directly below the saw blade and is arranged in one-to-one correspondence with the saw blade.

[0019] Further, the cross-cutting assembly includes a third fixing frame, a blade and a workbench. The third fixing frame is fixedly installed on the upper front side of the mounting frame, and a blade is installed in the middle of the inner side of the third fixing frame through an electro-hydraulic rod. A workbench is arranged inside the upper end of the mounting frame directly below the blade.

[0020] Further, a limiting vertical plate located inside the mounting frame is fixedly installed on the outer side of the lower end of the positioning plate, and a partition plate located below the limiting vertical plate is fixedly installed on the inner side of the mounting frame. A ball is inlaid at the connection between the limiting vertical plate and the ball.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The steel moves to the upper end of the guiding roller under the action of the first driving roller and passes through the gaps between the support plate and the first limiting roller and between the support plate and the second limiting roller. At this time, the steel is adapted to the shape of the support plate under the action of the first limiting roller and the second limiting roller and is in a slightly inclined state, thereby increasing the contact area between the steel and the saw blade, avoiding a sudden increase in the pressure per unit area at the edge of the steel during edge cutting, and preventing plastic deformation due to stress concentration.

[0023] 2. When the first fixing frame moves, it can drive the fixed side plate to move synchronously with it. At this time, the fixed side plate can pull out the second limiting roller from the second protective shell through the adapter plate, so that the distance between the second limiting roller and the saw blade is always maintained, thereby facilitating the limitation of the side of the steel by the second limiting roller. Furthermore, the whole can limit both sides of the steel to be edge-cut by the first limiting roller and the second limiting roller at the same time, improving the edge-cutting effect of the steel and preventing the steel from shifting during edge cutting.

[0024] 3. A fixing ring for fixing the winding roller is installed on the outer side of the third fixing frame through a hinge shaft, which is convenient for improving the installation effect of the winding roller. The side waste guided by the guiding plate can respectively move to the winding roller, and the side waste is wound and collected by the winding roller, so as to facilitate subsequent centralized treatment, separate the side waste from the steel, and prevent the side waste from being cross-cut together with the steel during the cross-cutting of the steel and being mixed in the steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing the present application; for example, those skilled in the art are capable of making routine adjustments or further optimizations to the addition / deletion / attribution division of certain units, specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concept disclosed in the present application and the exemplary drawings.

[0026] Figure 1 The front elevation sectional view of a combined unit for steel production with a trimming and cross-cutting function provided by some embodiments of the present invention.

[0027] Figure 2 The side elevation sectional view of a combined unit for steel production with a trimming and cross-cutting function provided by some embodiments of the present invention.

[0028] Figure 3 The top view of a combined unit for steel production with a trimming and cross-cutting function provided by some embodiments of the present invention.

[0029] Figure 4 The top view of the connection between the second limit roller and the first fixing frame of a combined unit for steel production with a trimming and cross-cutting function provided by some embodiments of the present invention.

[0030] Figure 5 The front elevation sectional view of the connection between the second protective shell and the installation frame of a combined unit for steel production with a trimming and cross-cutting function provided by some embodiments of the present invention.

[0031] Figure 6 The front view of the connection between the support plate and the guide roller of a combined unit for steel production with a trimming and cross-cutting function provided by some embodiments of the present invention.

[0032] Figure 7 For some embodiments of the present invention, a combined unit for steel production with a trimming and cross-cutting function Figure 1 Enlarged view at A.

[0033] Figure 8 For some embodiments of the present invention, a combined unit for steel production with a trimming and cross-cutting function Figure 2 Enlarged view at B.

[0034] Figure 9 For some embodiments of the present invention, a combined unit for steel production with a trimming and cross-cutting function Figure 4 Enlarged view at C.

[0035] Explanation of reference numerals:

[0036] 1. Installation frame; 2. First drive roller; 3. Second drive roller; 4. Drive assembly; 5. Limit side plate; 6. Drive motor; 7. Adjusting rod; 8. First fixing bracket; 9. Electric hydraulic rod; 10. First protective shell; 11. Saw blade; 12. Support plate; 13. Guide roller; 14. Installation block; 15. Positioning plate; 16. Limit vertical plate; 17. Ball; 18. Partition plate; 19. Second fixing bracket; 20. First limit roller; 21. Second protective shell; 22. Damper; 23. Installation ring; 24. Second limit roller; 25. Connecting plate; 26. Fixed side plate; 27. Third fixing bracket; 28. Blade; 29. Workbench; 30. Take-up roller; 31. Fixed ring; 32. Fixed rod; 33. Guide plate. Detailed implementation manners

[0037] The following further details the present application in conjunction with the accompanying drawings through specific embodiments.

[0038] As Figures 1 to 9 shown, a combined unit for steel production with a trimming and cross-cutting function in an embodiment of the present invention includes: an installation frame 1, a support plate 12, a second protective shell 21, and a cross-cutting assembly. A first drive roller 2 is installed on the upper side of the rear end of the installation frame 1, and a second drive roller 3 is arranged inside the front end of the installation frame 1. An adjusting rod 7 is rotatably installed at the lower end inside the installation frame 1;

[0039] Among them, the height dimension of the second drive roller 3 is lower than that of the first drive roller 2, and the upper ends of the first drive roller 2 and the guide roller 13 are flush. Drive assemblies 4 are connected to the outer sides of both the first drive roller 2 and the second drive roller 3. The drive assembly 4 includes a drive motor, a belt, and a pulley. The belt and the pulley cooperate to transmit power, making the transmission stable and facilitating driving multiple groups of the first drive roller 2 and the second drive roller 3 to move simultaneously, thereby facilitating the movement of flat steel to be processed and improving the processing efficiency.

[0040] Limit side plates 5 are arranged on both the left and right sides of the upper end of the first drive roller 2. A threaded rod is installed in the middle of the outer side of the limit side plate 5 through a bearing, which facilitates adjusting the position of the limit side plate 5 by rotating the threaded rod. At the same time, round rods that slide with the installation frame 1 are fixedly installed at both ends of the limit side plate 5, which is convenient for limiting the limit side plate 5. It is convenient to better make the two limit side plates 5 contact the two sides of the steel respectively, limit and center the steel, and prevent the steel from shifting.

[0041] At the same time, a drive motor 6 connected to the adjusting rod 7 is installed in the middle of the left side of the installation frame 1, and the thread structures on both sides of the adjusting rod 7 are arranged in the reverse direction, which facilitates synchronously driving two first fixing brackets 8 to move relatively on the outer side of the adjusting rod 7.

[0042] A trimming component is arranged on the outer side of the adjusting rod 7. The trimming component includes a first fixing frame 8, an electro-hydraulic rod 9, a first protective shell 10 and a saw blade 11. The first fixing frame 8 is installed on the inner side of the installation frame 1 and located on the outer side of the adjusting rod 7. The middle part of the upper end of the first fixing frame 8 is provided with an electro-hydraulic rod 9. The output end of the electro-hydraulic rod 9 is connected with a first protective shell 10. A driving component 4 is also arranged inside the first protective shell 10, and a saw blade 11 is arranged inside the rear side of the driving component 4.

[0043] Among them, the first protective shell 10 plays a role in installing the driving component 4. The electro-hydraulic rod 9 is used to adjust the heights of the first protective shell 10 and the saw blade 11, improving the processing flexibility effect. At the same time, a fixed side plate 26 for supporting the saw blade 11 is integrally and fixedly installed on the outer side of the first protective shell 10, facilitating the installation of the saw blade 11 directly above the support plate 12 through the fixed side plate 26, and facilitating the subsequent rotation of the saw blade 11 driven by the driving component 4 installed inside the first protective shell 10, facilitating the trimming work.

[0044] A support plate 12 is fixedly installed in the middle of the inner side of the installation frame 1. A guide roller 13 is rotatably arranged at the rear side of the upper end of the support plate 12. An installation block 14 is slidably installed inside the support plate 12. A positioning plate 15 is arranged inside the installation block 14. The installation block 14 is connected with the support plate 12 in a sliding manner, and the side of the installation block 14 close to the first fixing frame 8 is fixedly connected thereto by screws. The installation block 14 is located directly below the saw blade 11 and is arranged in one-to-one correspondence with the saw blade 11.

[0045] Among them, the middle cross-section of the support plate 12 is arc-shaped, facilitating the movement of the steel to the support plate 12, making this section in a slightly inclined state during trimming, thereby increasing the contact area between the steel and the saw blade 11, avoiding the sudden increase in the pressure per unit area at the edge of the steel during trimming, and preventing problems such as plastic deformation caused by stress concentration, and then obvious burrs and edge collapse. At the same time, the installation block 14 and the positioning plate 15 are fixedly connected by screws. The middle part of the positioning plate 15 is hollow, avoiding the positioning plate 15 affecting the trimming work of the saw blade 11.

[0046] A limiting vertical plate 16 located inside the installation frame 1 is fixedly installed on the outer side of the lower end of the positioning plate 15. A partition plate 18 located below the limiting vertical plate 16 is fixedly installed on the inner side of the installation frame 1. A ball 17 is inlaid at the connection between the limiting vertical plate 16 and the ball 17.

[0047] Among them, the partition plate 18 plays a role in limiting the first fixing frame 8 and the limiting vertical plate 16, preventing the first fixing frame 8 and the limiting vertical plate 16 from shifting during movement, improving the movement effect of the installation block 14 inside the support plate 12, and the ball 17 ensures the smoothness of the limiting vertical plate 16 during movement.

[0048] At the middle of the upper end of the installation frame 1, a first limiting component located above the middle of the support plate 12 is installed. The first limiting component includes a second fixing frame 19 and a first limiting roller 20. The second fixing frame 19 is fixedly installed at the middle of the upper end of the installation frame 1, and an electric hydraulic rod 9 is also arranged at the middle of the inner side of the second fixing frame 19. The output end of the electric hydraulic rod 9 is installed with a first limiting roller 20.

[0049] Among them, a U-shaped frame is installed at the middle of the second fixing frame 19 through the electric hydraulic rod 9. The U-shaped frame plays a role in installing the first limiting roller 20, and a bearing is arranged at the connection part, which is convenient to install the first limiting roller 20 at the middle of the upper end of the support plate 12. At the same time, it is convenient to adjust the height of the first limiting roller 20 according to the electric hydraulic rod 9.

[0050] On both outer ends of the installation frame 1, second protective shells 21 are fixedly installed, and second limiting components located on both sides of the support plate 12 are installed inside the second protective shells 21. The second limiting components include dampers 22, installation rings 23, second limiting rollers 24 and connecting plates 25. The dampers 22 are installed inside the installation frame 1, and installation rings 23 are installed on the outer side of the upper ends of the dampers 22. The installation rings 23 are slidably installed inside the installation frame 1. A second limiting roller 24 is arranged inside the installation ring 23 through a bearing, and one end of the second limiting roller 24 close to the saw blade 11 is installed with a connecting plate 25 through a bearing. The dampers 22 play a role in installing the second limiting roller 24 through the installation rings 23. At the same time, under the action of the dampers 22, the height of the second limiting roller 24 can be finely adjusted to be applicable to steel materials of different thicknesses.

[0051] Among them, the second limiting roller 24 is installed inside the second protective shell 21 under the action of the bearing and the installation ring 23. At the same time, the damper 22 plays a supporting role for the second limiting roller 24, which is convenient to install the second limiting roller 24 on the outer side of one end of the saw blade 11 far from the central axis of the installation frame 1. When the saw blade 11 is cutting the edge, one end of the second limiting roller 24 close to the saw blade 11 can limit the side of the steel material, avoiding the steel material from shifting during the edge cutting. At the same time, the connecting plate 25 extends into the fixed side plate 26, and the connecting plate 25 is connected with the fixed side plate 26 in a sliding manner. A moving cavity with a height greater than the size of the connecting plate 25 is opened inside the fixed side plate 26, so that when the saw blade 11 is adjusted in height, it will not affect the height of the second limiting roller 24, and the second limiting roller 24 can always limit the steel material under the action of the damper 22.

[0052] At the same time, the height of the second limiting roller 24 is flush with that of the first limiting roller 20, and they are arranged in an inner and outer alignment, so as to facilitate respectively limiting the two sides of the steel material to be edge-cut by the first limiting roller 20 and the second limiting roller 24, and improving the limiting effect.

[0053] A cross-cutting component is installed on the outer side of the front end of the installation frame 1, and winding rollers 30 are rotatably installed on both sides of the cross-cutting component. The cross-cutting component includes a third fixing frame 27, a blade 28 and a workbench 29. The third fixing frame 27 is fixedly installed on the upper side of the front end of the installation frame 1, and a blade 28 is installed in the middle of the inner side of the third fixing frame 27 through an electro-hydraulic rod 9. A workbench 29 is arranged inside the upper end of the installation frame 1 directly below the blade 28.

[0054] Among them, the electro-hydraulic rod 9 is used to control the height of the blade 28, so as to facilitate the cross-cutting work of the cut steel by the blade 28 and the workbench 29.

[0055] At the same time, an installation ring 23 is fixedly installed on the lower side of the front end of the first fixing frame 8 through screws, and a guide plate 33 is fixedly arranged on the outer side of the lower end of the fixing rod 32. The rear end of the guide plate 33 is located on the outer side of the front end of the saw blade 11, so as to facilitate the guiding of the side waste after trimming, separate the side waste from the steel, and avoid cross-cutting the side waste together when cross-cutting the steel, so that the side waste is mixed in the steel.

[0056] A driving motor is arranged at the lower end of the winding roller 30 for driving the winding roller 30, and a fixing ring 31 for fixing the winding roller 30 is installed on the outer side of the third fixing frame 27 through a hinge shaft, which is convenient for improving the installation effect of the winding roller 30; the side waste guided by the guide plate 33 can respectively move to the winding roller 30, and the winding roller 30 winds and collects the side waste for subsequent centralized treatment.

[0057] Working principle

[0058] First, place the whole stably on a specified plane, adjust the position of the limit side plate 5 so that the limit side plate 5 limits the steel. At the same time, according to the thickness of the steel, adjust the distance between the first limit roller 20 and the support plate 12; then start the driving components 4 respectively, so as to drive the first driving roller 2, the second driving roller 3 and the saw blade 11 to rotate through the driving components 4. Then start the driving motor 6, so that the driving motor 6 drives the adjusting rod 7 to rotate inside the installation frame 1. At this time, the two first fixing frames 8 are respectively threadedly connected with the adjusting rod 7, so as to move relatively, and then it is convenient to adjust the position of the saw blade 11 according to the required trimming size.

[0059] When the two groups of first fixing frames 8 move relative to each other, they drive the mounting block 14 to move synchronously with them, so that the mounting block 14 and the positioning plate 15 can always be located below the saw blade 11. At the same time, the upper ends of the mounting block 14 and the positioning plate 15 are flush with the upper end of the support plate 12 to avoid affecting the movement of the steel. When moving, the lower end of the first fixing frame 8 slides on the partition plate 18, and at the same time, the second fixing frame 19 embedded inside the lower end of the limiting vertical plate 16 rolls on the partition plate 18, so as to facilitate the movement limit of the first fixing frame 8 and the limiting vertical plate 16 through the partition plate 18.

[0060] At the same time, when the first fixing frame 8 moves, it can drive the fixed side plate 26 to move synchronously with it. At this time, the fixed side plate 26 can pull out the second limiting roller 24 from the second protective shell 21 through the connecting plate 25, so that the distance between the second limiting roller 24 and the saw blade 11 is always maintained, so as to facilitate the side limit of the steel through the second limiting roller 24. Furthermore, the whole can limit both sides of the steel to be trimmed simultaneously through the first limiting roller 20 and the second limiting roller 24, improve the trimming effect of the steel, and avoid the deviation of the steel during trimming.

[0061] Put the steel into the first driving roller 2 from the rear end, so that the steel moves to the upper end of the guiding roller 13 under the action of the first driving roller 2 and passes through the gaps between the support plate 12 and the first limiting roller 20, and between the support plate 12 and the second limiting roller 24. At this time, the steel is adapted to the shape of the support plate 12 under the action of the first limiting roller 20 and the second limiting roller 24, showing a slightly inclined state, so as to increase the contact area between the steel and the saw blade 11, avoid the sudden increase in the unit area pressure at the edge of the steel during trimming, and prevent the problems of plastic deformation due to stress concentration, and then obvious burrs and edge collapse. As the steel moves, the second limiting roller 24 and the first limiting roller 20 can rotate respectively to improve the movement effect of the steel.

[0062] During trimming, start the electric hydraulic rod 9, so that the elongation of the electric hydraulic rod 9 drives the first protective shell 10 and the fixed side plate 26 to move downward, and then the saw blade 11 moves downward to trim the steel. At this time, the lower end of the saw blade 11 can move into the positioning plate 15 during cutting, which is convenient to support the steel at the trimming position through the mounting block 14 and the positioning plate 15, and is conducive to improving the trimming effect of the saw blade 11.

[0063] Start the drive motor arranged at the lower end of the winding roller 30. After trimming, the guide plate 33 is convenient for guiding the side waste after trimming, so that the side waste is separated from the steel, avoiding trimming the side waste together when the steel is cross-cut, and preventing the side waste from being mixed in the steel. At the same time, the side waste guided by the guide plate 33 can move to the winding roller 30 respectively, and the winding roller 30 winds and collects the side waste for subsequent centralized treatment.

[0064] The cut steel is moved to the outer side of the upper end of the workbench 29. At this time, the height of the blade 28 can be controlled by the electro-hydraulic rod 9, and then the cut steel can be cross-cut by the blade 28.

[0065] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written out should also be regarded as within the scope described in this specification.

Claims

1. A combined machine unit for steel production with trimming and crosscutting functions, comprising a mounting frame (1), a support plate (12), a second protective shell (21) and a crosscutting assembly, characterized in that: A first transmission roller (2) is installed on the upper side of the rear end of the installation frame (1), and a second transmission roller (3) is arranged on the inner side of the front end of the installation frame (1); an adjustment rod (7) is rotatably installed on the lower end of the inner side of the installation frame (1), and a trimming assembly is arranged on the outer side of the adjustment rod (7); A support plate (12) is fixedly mounted on the middle part of the inner side of the mounting frame (1), and a guide roller (13) is rotatably mounted on the rear side of the upper end of the support plate (12); a mounting block (14) is slidably mounted inside the support plate (12), and a positioning plate (15) is arranged inside the mounting block (14); and a first position-limiting component located above the middle part of the support plate (12) is mounted on the middle part of the upper end of the mounting frame (1); A second protective shell (21) is fixedly mounted on both outer ends of the mounting frame (1), and a second limiting assembly located on both sides of the support plate (12) is mounted inside the second protective shell (21); A cross-cutting assembly is installed on the outer side of the front end of the installation frame (1), and winding rollers (30) are rotatably installed on both sides of the cross-cutting assembly.

2. A combined machine unit for steel production with trimming and crosscutting functions according to claim 1, characterized in that: The height dimension of the second transmission roller (3) is lower than the height dimension of the first transmission roller (2), and the upper end of the first transmission roller (2) is arranged flush with the upper end of the guide roller (13), and the outer sides of the first transmission roller (2) and the second transmission roller (3) are both connected to a driving assembly (4).

3. The steel production combined machine unit with trimming and crosscutting functions according to claim 1, characterized in that: The trimming assembly comprises a first fixed frame (8), an electric hydraulic rod (9), a first protective shell (10) and a saw blade (11); the first fixed frame (8) is installed on the inner side of the mounting frame (1) and is located on the outer side of the adjusting rod (7); the electric hydraulic rod (9) is installed in the middle of the upper end of the first fixed frame (8); and the output end of the electric hydraulic rod (9) is connected to the first protective shell (10).

4. The steel production combined machine unit with trimming and crosscutting functions according to claim 3 is characterized in that: The first protective shell (10) is also provided with a driving assembly (4) inside, and a saw blade (11) is provided inside the rear side of the driving assembly (4), and a fixed side plate (26) for supporting the saw blade (11) is integrally fixedly installed on the outer side of the first protective shell (10).

5. The steel production combined machine unit with trimming and crosscutting functions according to claim 1, characterized in that: The first limiting assembly comprises a second fixed frame (19) and a first limiting roller (20); the second fixed frame (19) is fixedly mounted at the middle of the upper end of the mounting frame (1); an electric hydraulic rod (9) is also arranged at the inner middle of the second fixed frame (19); the first limiting roller (20) is installed at the output end of the electric hydraulic rod (9).

6. The steel production combined machine unit with trimming and crosscutting functions according to claim 1, characterized in that: The second limiting assembly comprises a damper (22), a mounting ring (23), a second limiting roller (24) and a connecting plate (25); the damper (22) is installed inside the mounting frame (1), and a mounting ring (23) is installed on the outer side of the upper end of the damper (22); the mounting ring (23) is slidably installed inside the mounting frame (1).

7. The steel production combined machine unit with trimming and crosscutting functions according to claim 6, characterized in that: A second limiting roller (24) is arranged inside the mounting ring (23) via a bearing, and a connecting plate (25) is installed at one end of the second limiting roller (24) close to the saw blade (11) via a bearing, the connecting plate (25) extends to the inside of the fixed side plate (26), and the connecting plate (25) and the fixed side plate (26) are connected in a sliding manner.

8. The steel production combined machine unit with trimming and crosscutting functions according to claim 1, characterized in that: The mounting block (14) is connected to the support plate (12) in a sliding manner, and a side of the mounting block (14) close to the first fixing frame (8) is fixedly connected thereto by means of screws. The mounting block (14) is located directly below the saw blade (11) and is arranged in one-to-one correspondence with the saw blade (11).

9. The steel production combined machine unit with trimming and crosscutting functions according to claim 1, characterized in that: The cross-cutting assembly comprises a third fixing frame (27), a blade (28) and a workbench (29); the third fixing frame (27) is fixedly mounted on the upper front end of the mounting frame (1); the blade (28) is mounted on the inner middle portion of the third fixing frame (27) via an electric hydraulic rod (9); and the workbench (29) is arranged inside the upper end of the mounting frame (1) and is located directly below the blade (28).

10. The steel production combined machine unit with trimming and crosscutting functions according to claim 1, characterized in that: A limiting vertical plate (16) located in the installation frame (1) is fixedly installed on the outer side of the lower end of the positioning plate (15), and a partition plate (18) located below the limiting vertical plate (16) is fixedly installed on the inner side of the installation frame (1), and a ball (17) is embedded at the connection between the limiting vertical plate (16) and the ball (17).

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