A hot-rolled steel coil bundling unit and a bundling method

Abstract

This invention provides a hot-rolled steel coil bundling unit and bundling method. The bundling unit includes a steel coil pallet transport line for conveying steel coils via pallets, with a pallet buffer line arranged on one side of the steel coil pallet transport line; a pallet traversing device arranged on the steel coil pallet transport line; a circumferential bundling machine located on one side of the pallet buffer line for bundling the steel coils circumferentially; a radial bundling machine located on one side of the pallet buffer line for bundling the steel coils radially; and a saddle trolley mounted on a saddle track, which moves along the saddle track to transfer the steel coils between the circumferential and radial bundling machines. Compared with existing technologies, relying on the steel coil pallet transport line in the workshop reduces the intensity of overhead crane operations, provides flexible production organization, can quickly bundle large quantities of coils, and can also meet sporadic bundling needs, improving the automation level of the unit and eliminating manual bundling stations.

Description

Technical Field

[0001] This invention belongs to the field of steel processing equipment, and in particular relates to a bundling method for a hot-rolled steel coil bundling machine. Background Technology

[0002] After being coiled by the coiler, the hot-rolled strip steel is bundled by the circumferential bundling machine on the rolling line. The steel coil transport line transports the steel coils to the steel coil warehouse. In the warehouse, steel coils for export and steel coils for special purposes are re-bundled and reinforced according to the destination of the steel coils to meet the storage and transportation needs of the steel coils.

[0003] Currently, palletized transport lines are commonly used in the production of hot-rolled strip steel coils. These lines extend from the coiler exit to the coil storage area. However, during coil production, most of these transport lines are idle and not fully utilized. Overhead cranes are the only means of transporting coils in the storage area, resulting in heavy lifting tasks. Even with multiple cranes, unavoidable interference during operation persists.

[0004] In response to the specific characteristics of the site, a steel coil bundling unit was developed. Relying on the steel coil pallet transport line in the workshop, it reduces the intensity of overhead crane operations in the workshop, has flexible production organization, can quickly bundle large quantities of coils, and can also meet sporadic bundling needs, improves the automation level of the unit, and eliminates manual bundling stations. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a bundling method for hot-rolled steel coil bundling units, which solves the problems of interference and low efficiency in the current hot-rolled strip steel production site.

[0006] To achieve the above and other related objectives, the technical solution of the present invention is as follows:

[0007] A hot-rolled steel coil bundling unit includes:

[0008] A steel coil pallet transport line is used to transport steel coils via pallets. A pallet buffer line is arranged on one side of the steel coil pallet transport line for transporting and storing pallets.

[0009] A pallet lateral movement device is arranged on the steel coil pallet transport line for laterally moving the pallet and steel coil between the steel coil pallet transport line and the pallet buffer line.

[0010] A circumferential bundling machine, located on one side of the pallet buffer line, is used to bundle steel coils circumferentially.

[0011] A radial bundling machine, located on one side of the pallet buffer line, is used to radially bundle steel coils;

[0012] A saddle trolley, which is mounted on a saddle track, moves on the saddle track to transfer steel coils between the circumferential balers or the radial balers.

[0013] Optionally, the saddle track is arranged parallel to the steel coil pallet transport line, the pallet buffer line is arranged parallel to the steel coil pallet transport line, the pallet buffer line is located between the circumferential baler or the radial baler and the steel coil pallet transport line, and the saddle track is located on the side of the circumferential baler or the radial baler away from the pallet buffer line.

[0014] Optionally, a fixed saddle A and an off-line saddle A are provided on both sides of the saddle track corresponding to the circumferential baler, wherein the fixed saddle A is located between the saddle track and the circumferential baler; a fixed saddle B and an off-line saddle B are provided on both sides of the saddle track corresponding to the radial baler, wherein the fixed saddle B is located between the saddle track and the radial baler.

[0015] Optionally, the pallet traversing device is configured between the steel coil pallet transport line and the pallet buffer line, and there are two pallet traversing devices, one of which is aligned with the circumferential baler, and the other is aligned with the radial baler.

[0016] Optionally, the steel coil pallet transport line, the pallet lateral movement device, and the pallet buffer line together form the coil taking and unwinding area of ​​the circumferential baler or the radial baler, moving the steel coil between the steel coil pallet transport line and the circumferential baler or the radial baler.

[0017] Optionally, the circumferential baler is provided with a coil transport trolley AA and a coil transport trolley AB on both sides. The coil transport trolley AA, the circumferential baler, the coil transport trolley AB, and the fixed saddle A together form a circumferential baler line. The coil transport trolley AA is used to transport the steel coil between the pallet buffer line and the circumferential baler. The coil transport trolley AB is used to transport the steel coil between the circumferential baler, the fixed saddle A, the saddle trolley, and the off-line saddle A.

[0018] Optionally, the radial baler is provided with a coil transport trolley BA and a coil transport trolley BB on both sides. The coil transport trolley BA, the radial baler, the coil transport trolley BB, and the fixed saddle B together form a radial baler line. The coil transport trolley BA is used to transport the steel coil between the pallet buffer line and the radial baler. The coil transport trolley BB is used to transport the steel coil between the radial baler, the fixed saddle B, the saddle trolley, and the off-line saddle B.

[0019] Optionally, two saddle trolleys are provided between the circumferential baling line and the radial baling line, and the two saddle trolleys run independently on the saddle track for transporting steel coils.

[0020] Optionally, the coil transport trolleys AA, AB, BA, and BB can all cooperate with the saddle trolley to transport steel coils.

[0021] Accordingly, the present invention also provides a method for bundling hot-rolled steel coils, employing a hot-rolled steel coil bundling machine unit as described in any of the above claims, comprising:

[0022] The steel coils are placed in a pallet and transported to the pallet traversing device via the steel coil pallet transport line;

[0023] The steel coil is placed into the circumferential baler via the pallet transverse transfer device, and the empty pallet is transported and stored via the pallet buffer line.

[0024] The steel coils are circumferentially bundled by the circumferential bundling machine and then conveyed to the radial bundling machine via the saddle trolley. After the radial bundling machine performs radial bundling on the steel coils, they return to the pallet buffer line. The pallet traversing device then sends the steel coils and pallets back to the steel coil pallet transport line for continued transport.

[0025] This invention discloses a hot-rolled steel coil bundling unit. By arranging circumferential and radial bundling machines on one side of a pallet buffer line, and utilizing a pallet lateral movement device and the pallet buffer line, the unit achieves rapid coil loading, unloading, and buffering, quickly transferring the steel coils into the bundling machines. By relying on the existing steel coil pallet transport line within the workshop, the circumferential and radial bundling machines are effectively connected to the pallet transport line using steel coil transport equipment. This reduces the workload of overhead crane operations in the workshop and improves the equipment utilization rate of the pallet transport line and the operating efficiency of the bundling machines. During operation, the unit can enter the bundling line via the pallet transport line according to the bundling needs. After bundling, the steel coils can be transported away from the bundling unit via the pallet transport line or overhead crane. Compared with existing technologies, relying on the workshop's steel coil pallet transport line reduces the workload of overhead crane operations, offers flexible production organization, allows for both rapid large-volume bundling and meeting sporadic bundling needs, improves the automation level of the unit, and eliminates manual bundling stations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a hot-rolled steel coil bundling unit according to an example of the present invention;

[0027] Figure 2 for Figure 1 Sectional view at point AA;

[0028] Figure 3 for Figure 1Sectional view at point BB;

[0029] Figure 4 for Figure 1 Sectional view at CC;

[0030] Figure 5 Front view of the fixed saddle and the winding trolley;

[0031] Figure 6 Front view of the saddle outside the line.

[0032] The reference numerals in the embodiments include:

[0033] 10. Steel coil pallet transport line; 11. Pallet lateral movement device; 12. Pallet buffer line; 13. Circumferential baling machine; 14. Radial baling machine; 15. Saddle rail; 16. Saddle trolley; 17. Fixed saddle A; 18. Off-line saddle A; 19. Off-line saddle B; 20. Coil transport trolley AA; 21. Coil transport trolley AB; 22. Coil transport trolley BA; 23. Coil transport trolley BB; 24. Detailed Implementation

[0034] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0035] It should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Throughout the drawings, the same reference numerals denote the same components. Terms such as “upper,” “lower,” “left,” “right,” “middle,” and “a” used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0036] The specific structure of a hot-rolled steel coil bundling unit in this invention is described in conjunction with [reference needed]. Figures 1 to 6The unit includes a steel coil pallet transport line 10 for conveying steel coils via pallets. A pallet buffer line 12 is arranged on one side of the steel coil pallet transport line 10 for transporting and storing pallets. A pallet lateral movement device 11 is arranged on the steel coil pallet transport line 10 for laterally moving pallets and steel coils between the steel coil pallet transport line 10 and the pallet buffer line 12. A circumferential baler 13 is located on one side of the pallet buffer line 12 for circumferentially baling the steel coils. A radial baler 14 is located on one side of the pallet buffer line 12 for radially baling the steel coils. A saddle trolley 16 is mounted on a saddle track 15, and the saddle trolley 16 can move along the saddle track 15 to convey steel coils between the circumferential baler 13 and the radial baler 14. The vertical, horizontal, and vertical positional relationships can be configured as follows: Figure 1 For reference and understanding purposes.

[0037] Specifically, taking the steel coil pallet transport line 10 as a reference, a pallet buffer line 12 and a saddle rail 15 are arranged sequentially on one side of the steel coil pallet transport line 10. Both the pallet buffer line 12 and the saddle rail 15 are parallel to the steel coil pallet transport line 10. A pallet lateral movement device 11 is arranged between the pallet buffer line 12 and the steel coil pallet transport line 10 in a direction perpendicular to the transport direction of the steel coil pallet transport line 10, allowing for lateral movement of the steel coil and the pallet carrying it. A circumferential baler 13 and a radial baler 14 are arranged between the saddle rail 15 and the pallet buffer line 12. The steel coil can be transported between the circumferential baler 13 and the radial baler 14 by the movement of the saddle trolley 16 on the saddle rail 15.

[0038] In practical implementation, this unit has two operating modes. The first can be called the high-speed unidirectional operation mode, where the steel coils are transported unidirectionally within the baling unit. The steel coils enter the baling operation via the pallet lateral movement device 11, and the empty pallets are transported and stored via the pallet buffer line 12. The steel coils then return clockwise to the pallet buffer line 12 via the circumferential baler 13, the saddle trolley 16, and the radial baler 14. The pallet lateral movement device 11 then returns the steel coil pallet transport line 10. The second can be called the mixed sporadic operation mode, where steel coils enter the baling operation as needed via the pallet transport line, the off-line saddle, etc. After baling, the steel coils can be transported away from the baling unit via the pallet transport line or a crane. This unit, by relying on the existing steel coil pallet transport line 10 in the workshop, effectively connects the circumferential baler 13 and the radial baler 14 with the pallet transport line using steel coil transport equipment, reducing the workload of crane operations in the workshop and improving the equipment utilization rate of the pallet transport line and the operating efficiency of the balers.

[0039] In some embodiments, the saddle rail 15 is arranged parallel to the steel coil pallet transport line 10, the pallet buffer line 12 is arranged parallel to the steel coil pallet transport line 10, the pallet buffer line 12 is located between the circumferential baler 13 or the radial baler 14 and the steel coil pallet transport line 10, and the saddle rail 15 is located on the side of the circumferential baler 13 or the radial baler 14 away from the pallet buffer line 12.

[0040] for example, Figure 1 As shown, the saddle rail 15, the coil pallet transport line 10, and the pallet buffer line 12 are all arranged parallel to each other, i.e., horizontally. The pallet buffer line 12 is not positioned between the saddle rail 15 and the coil pallet transport line 10, but rather on one side of the coil pallet buffer line 12. The circumferential baler 13 and the radial baler 14 are located between the saddle rail 15 and the pallet buffer line 12. This arrangement is more efficient, facilitating the transfer of coils to the circumferential baler 13 and the radial baler 14, thus completing the coil baling process efficiently.

[0041] In some embodiments, a fixed saddle A17 and an off-line saddle A18 are provided on both sides of the saddle track 15 corresponding to the circumferential baler 13, wherein the fixed saddle A17 is located between the saddle track 15 and the circumferential baler 13; a fixed saddle B19 and an off-line saddle B20 are provided on both sides of the saddle track 15 corresponding to the radial baler 14, wherein the fixed saddle B19 is located between the saddle track 15 and the radial baler 14.

[0042] In the specific implementation process, such as Figures 1 to 6 As shown, the circumferential baler 13 has a fixed saddle A17 and an off-line saddle A18 on both sides of the saddle track 15, and the radial baler 14 has a fixed saddle B19 and an off-line saddle B20 on both sides of the saddle track 15. The structure of the fixed saddle is as follows: Figure 5 As shown, the structure of the saddle outside the line is as follows: Figure 6 As shown, the fixed saddle A17, saddle trolley 16, off-line saddle A18, fixed saddle B19, and off-line saddle B20 can all cooperate with the trolley transporting steel coils to transport and transfer them. This limits the direction of steel coil transfer and speeds up the transfer process. The off-line and fixed saddles provide flexible coil loading methods for the baler and, after baling, transport the steel coils via a pallet transport line, providing a new means for long-distance steel coil transport within the garage area.

[0043] In some embodiments, the pallet traversing device 11 is configured to cooperate between the steel coil pallet transport line 10 and the pallet buffer line 12, and there are two pallet traversing devices 11, one of which is aligned with the circumferential baler 13, and the other is aligned with the radial baler 14. For example, Figure 1 As shown, two pallet traversing devices 11 are provided to facilitate the traversing of steel coils and pallets at different positions on the steel coil pallet transport line 10.

[0044] In some embodiments, the coil pallet transport line 10, the pallet lateral movement device 11, and the pallet buffer line 12 together form the coil take-up and unwinding area of ​​the circumferential baler 13 or the radial baler 14, moving the steel coil between the coil pallet transport line 10 and the circumferential baler 13 or the radial baler 14. For example, Figure 1 As shown, the coil unwinding and rewinding areas enable rapid unwinding and rewinding of steel coils, efficiently completing the coil bundling process.

[0045] In some embodiments, the circumferential baler 13 is provided with a coil transport trolley AA21 and a coil transport trolley AB22 on both sides. The coil transport trolley AA21, the circumferential baler 13, the coil transport trolley AB22, and the fixed saddle A17 together form the circumferential baler 13 line. The coil transport trolley AA21 is used to transport the steel coil between the pallet buffer line 12 and the circumferential baler 13. The coil transport trolley AB22 is used to transport the steel coil between the circumferential baler 13, the fixed saddle A17, the saddle trolley 16, and the off-line saddle A18.

[0046] In the specific implementation process, such as Figure 1 As shown, the arrangement of the coil transport trolleys AA21 and AB22 facilitates the transport of steel coils between the pallet buffer line 12 and the circumferential bundling machine 13, as well as between the circumferential bundling machine 13, the fixed saddle A17, and the saddle trolley 16.

[0047] In some embodiments, the radial baler 14 is provided with a coil transport trolley BA23 and a coil transport trolley BB24 on both sides. The coil transport trolley BA23, the radial baler 14, the coil transport trolley BB24, and the fixed saddle B19 together form the radial baler 14 line. The coil transport trolley BA23 is used to transport the steel coil between the pallet buffer line 12 and the radial baler 14. The coil transport trolley BB24 is used to transport the steel coil between the radial baler 14, the fixed saddle B19, the saddle trolley 16, and the off-line saddle B20.

[0048] In actual implementation, such as Figure 1As shown, the arrangement of the coil transport trolleys BA23 and BB24 facilitates the transport of steel coils between the pallet buffer line 12 and the radial bundling machine 14, as well as between the radial bundling machine 14, the fixed saddle B19, and the saddle trolley 16. Specifically, the coil transport trolleys AA, AB22, BA23, and BB24 can utilize existing coil transport trolleys in the workshop, such as... Figure 5 As shown, the steel coil can be placed vertically on the coil transport trolley, which can move freely, facilitating the transport of the steel coil on the bundling line. The coil transport trolley can be fixedly coordinated with fixed saddle A17, fixed saddle B19, off-line saddle A18, off-line saddle B20, and saddle trolley 16, facilitating the transfer-free transport of the steel coil and further accelerating the transport process.

[0049] The coil transport trolley can place steel coils on the saddle trolley 16. For example, in this scheme, the baling unit operates continuously in high-speed unidirectional mode. During the high-speed baling of steel coils, if individual steel coils need to be baled in a mixed sporadic operation mode, the overhead crane can place the steel coils on the off-line saddle, and the coil transport trolley can retrieve or place the coils on the off-line saddle. The coil transport trolley can also pass through the saddle trolley 16 to retrieve or place steel coils on the off-line saddle. The off-line saddle is used for the overhead crane to lift and place steel coils, and the fixed saddle can cooperate with the coil transport trolley for temporary storage of steel coils. Releasing the coil transport trolley can buffer the work rhythm.

[0050] In some embodiments, two saddle trolleys 16 are arranged between the circumferential baling machine line 13 and the radial baling machine line 14. The two saddle trolleys 16 operate independently on the saddle track 15 for transporting steel coils. For example, Figure 1 As shown, the two saddle carriages 16 facilitate the independent operation of the axial baling machine line and the radial baling machine line 14, making it convenient for the independent transportation of steel coils.

[0051] In some embodiments, the coil transport trolleys AA21, AB22, BA23, and BB24 can all cooperate with the saddle trolley 16 to transport steel coils. For example, Figure 1 As shown, when transporting steel coils, the coil transport trolley 16 with the steel coil placed on it is directly fixed to the saddle trolley 16. The saddle trolley 16 transports the steel coil along the saddle track 15. This setup eliminates the need to handle the steel coils and enables them to be transported quickly along a predetermined route, further increasing the efficiency of steel coil bundling and transport.

[0052] In some embodiments, this solution also provides a method for bundling hot-rolled steel coils, employing a hot-rolled steel coil bundling machine unit as described in any of the above claims, including:

[0053] The steel coil is placed in a pallet and transported to the pallet traversing device 11 via the steel coil pallet transport line 10;

[0054] The steel coil is placed into the circumferential baler 13 by the pallet lateral movement device 11, and the empty pallet is transported and stored by the pallet buffer line 12. Specifically, the pallet lateral movement device 11 moves the steel coil and pallet on the steel coil pallet transport line 10 to the pallet buffer line 12, and the steel coil in the pallet is taken out by the coil transport trolley AA21 and transported to the circumferential baler 13. The circumferential baler 13 balers the steel coil along the circumference.

[0055] The steel coil is circumferentially bundled by the circumferential bundling machine 13 and then conveyed to the radial bundling machine 14 via the saddle trolley 16. After the radial bundling machine 14 performs radial bundling on the steel coil, the steel coil returns to the pallet buffer line 12. The pallet lateral movement device 11 sends the steel coil and pallet back to the steel coil pallet transport line 10 for continued transport. Specifically, after the circumferential bundling machine 13 completes the circumferential bundling of the steel coil, the steel coil is taken out of the circumferential bundling machine 13 by the coil transport trolley AB22 and transferred to the fixed saddle A17. The fixed saddle A17 transfers the coil transport trolley AB22 to the saddle trolley 16, and the steel coil is transferred to the fixed saddle B19 by the saddle trolley BB24. Then, the steel coil is transferred from the saddle trolley 16 to the fixed saddle B19 and the radial bundling machine 14 by the coil transport trolley BB24. After being bundled by the radial bundling machine 14, the steel coil is placed back on the pallet of the pallet buffer line 12 by the coil transport trolley BA23. Then, the steel coil and the pallet are returned to the steel coil pallet transport line 10 by the pallet lateral movement device 11 to continue transportation.

[0056] This method uses the bundling method specified for the bundling machine unit in this scheme. The circumferential and radial bundling lines of this bundling machine unit are connected by a coil transport trolley, a saddle trolley 16, and a pallet buffer line 12 to form a closed production line, enabling flexible and efficient transport of steel coils within the bundling machine unit. In this bundling method, the pallet lateral movement device 11 moves the steel coils transported from the steel coil pallet transport line 10 to one side of the pallet buffer line 12. The coil transport trolley AA21 retrieves the coils from the pallet lateral movement device 11, leaving the empty pallet on the device. The roller conveyors on the pallet lateral movement device 11 and the pallet buffer line 12 are activated, storing the empty pallet along the pallet buffer line 12. The coil transport trolley AA21 transports the steel coils to the circumferential bundling machine 13, which completes the bundling operation. The coil transport trolley AB22 transports the steel coil to the saddle trolley 16 or the off-line saddle (when the crane is off the line). The saddle trolley 16 transports the steel coil to one side of the radial bundling machine 14. The coil transport trolley BB24 takes the coil from the saddle trolley 16 and transports it to the radial bundling machine 14 for radial bundling. The bundled steel coil is then transported by the coil transport trolley BA23 to the empty pallet at the pallet lateral movement device 11. The pallet lateral movement device 11 starts its lateral movement to send the steel coil back to the steel coil pallet transport line 10.

[0057] In other embodiments, the baling unit according to this solution can also provide another baling method, including:

[0058] (1) Steel coils are bundled radially only via the pallet transport line: The steel coils are transported to the bundling machine area via the pallet transport line. The pallet lateral movement device 11 moves the steel coils transported from the steel coil pallet transport line 10 to one side of the pallet buffer line 12. The coil transport trolley AA21 or the coil transport trolley BA23 takes the coils from the pallet lateral movement device 11. The empty pallet remains on the pallet lateral movement device 11. The coil transport trolley AA21 or the coil transport trolley BA23 transports the steel coils to the circumferential bundling machine 13 or the radial bundling machine 14. The circumferential bundling machine 13 or the radial bundling machine 14 completes the bundling operation. The bundled steel coils are transported to the empty pallet at the pallet lateral movement device 11 via the coil transport trolley AA21 or the coil transport trolley BA23. The pallet lateral movement device 11 starts the lateral movement to send the steel coils back to the steel coil pallet transport line 10.

[0059] (2) Steel coils are bundled radially only via the workshop crane: The steel coils are transported to the bundling machine area via the workshop crane. The saddle trolleys 16 stop at both ends. The steel coils are unwound to the saddle A18 and the fixed saddle A17 outside the line. The coil transport trolley AB22 transports the steel coils to the circumferential bundling machine 13 to complete the bundling operation. The coil transport trolley AA21 transports the steel coils to the steel coil pallet of the pallet transverse transfer device 11. The steel coils are then transported to the steel coil pallet transport line 10 via the transverse transfer device 10 and transported to the warehouse area via the steel coil pallet transport line 10. If radial bundling is required, the steel coil is transported to another pallet traversing device 11 via the pallet traversing device 11 and the pallet buffer line 12. The coil transport trolley BA23 then transports the steel coil to the radial bundling machine 14 to complete the radial bundling operation. If the steel coil needs to be transported by the workshop crane, it is transported to the fixed saddle B19, saddle trolley 16, and off-line saddle B20 via the coil transport trolley BB24 to await crane hoisting. If the steel coil needs to be transported by the steel coil pallet transport line 10, it returns to the pallet traversing device 11B via the coil transport trolley BA23. The steel coil is then transported to the steel coil pallet transport line 10 via the traversing device 11 and transported to the warehouse area via the steel coil pallet transport line 10.

[0060] This bundling method can fully utilize the transportation and buffering capacity of the pallet transport line, and greatly alleviate the problem of low operating efficiency when transporting coils over long distances in the workshop.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A hot-rolled steel coil bundling machine, characterized in that, include: A steel coil pallet transport line is used to transport steel coils via pallets. A pallet buffer line is arranged on one side of the steel coil pallet transport line for transporting and storing pallets. A pallet lateral movement device is arranged on the steel coil pallet transport line for laterally moving the pallet and steel coil between the steel coil pallet transport line and the pallet buffer line. A circumferential bundling machine, located on one side of the pallet buffer line, is used to bundle steel coils circumferentially. A radial bundling machine, located on one side of the pallet buffer line, is used to radially bundle steel coils; A saddle trolley, which is mounted on a saddle track, moves on the saddle track to transfer steel coils between the circumferential balers or the radial balers; Fixed saddle A and off-line saddle A are provided on both sides of the saddle track corresponding to the circumferential baler, wherein the fixed saddle A is located between the saddle track and the circumferential baler; fixed saddle B and off-line saddle B are provided on both sides of the saddle track corresponding to the radial baler, wherein the fixed saddle B is located between the saddle track and the radial baler.

2. The hot-rolled steel coil bundling unit according to claim 1, characterized in that: The saddle track is set parallel to the steel coil pallet transport line, the pallet buffer line is set parallel to the steel coil pallet transport line, the pallet buffer line is located between the circumferential baler or the radial baler and the steel coil pallet transport line, and the saddle track is located on the side of the circumferential baler or the radial baler away from the pallet buffer line.

3. A hot-rolled steel coil bundling unit according to claim 2, characterized in that: The pallet lateral movement device is configured between the steel coil pallet transport line and the pallet buffer line, and there are two pallet lateral movement devices, one of which is aligned with the circumferential baler, and the other is aligned with the radial baler.

4. A hot-rolled steel coil bundling unit according to claim 3, characterized in that: The steel coil pallet transport line, the pallet lateral movement device, and the pallet buffer line together form the coil taking and unwinding area of ​​the circumferential baler or the radial baler, moving the steel coil between the steel coil pallet transport line and the circumferential baler or the radial baler.

5. A hot-rolled steel coil bundling unit according to claim 4, characterized in that: The circumferential baler is equipped with a coil transport trolley AA and a coil transport trolley AB on both sides. The coil transport trolley AA, the circumferential baler, the coil transport trolley AB, and the fixed saddle A together form a circumferential baler line. The coil transport trolley AA is used to transport steel coils between the pallet buffer line and the circumferential baler. The coil transport trolley AB is used to transport steel coils between the circumferential baler, the fixed saddle A, the saddle trolley, and the off-line saddle A.

6. A hot-rolled steel coil bundling unit according to claim 5, characterized in that: The radial baler is equipped with a coil transport trolley BA and a coil transport trolley BB on both sides. The coil transport trolley BA, the radial baler, the coil transport trolley BB, and the fixed saddle B together form a radial baler line. The coil transport trolley BA is used to transport steel coils between the pallet buffer line and the radial baler. The coil transport trolley BB is used to transport steel coils between the radial baler, the fixed saddle B, the saddle trolley, and the off-line saddle B.

7. A hot-rolled steel coil bundling unit according to claim 6, characterized in that: Two saddle trolleys are installed between the circumferential baling machine line and the radial baling machine line. The two saddle trolleys run independently on the saddle track for transporting steel coils.

8. A hot-rolled steel coil bundling unit according to claim 7, characterized in that: The coil transport trolleys AA, AB, BA, and BB can all cooperate with the saddle trolley to transport steel coils.

9. A method for bundling hot-rolled steel coils, characterized in that, The hot-rolled steel coil bundling unit as described in any one of claims 1-8 includes: The steel coils are placed in a pallet and transported to the pallet traversing device via the steel coil pallet transport line; The steel coil is placed into the circumferential baler via the pallet transverse transfer device, and the empty pallet is transported and stored via the pallet buffer line. The steel coils are circumferentially bundled by the circumferential bundling machine and then conveyed to the radial bundling machine via the saddle trolley. After the radial bundling machine performs radial bundling on the steel coils, they return to the pallet buffer line. The pallet traversing device then sends the steel coils and pallets back to the steel coil pallet transport line for continued transport.

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