A coil positioning device and a positioning method thereof

Abstract

The present application relates to the technical field of steel coil processing, and particularly relates to a steel coil positioning device and a positioning method thereof, which comprises an uncoiler, the uncoiler is provided with an expanding and contracting reel, one side of the uncoiler is provided with a conveying structure, the conveying structure comprises a sliding piece capable of reciprocating along the expanding and contracting reel in an axial direction, the sliding piece is provided with a lifting piece for carrying the steel coil and capable of lifting, the lifting piece is provided with a limiting piece for fixing the position of the steel coil, and the device further comprises an aligning piece for assisting the alignment of the inner ring of the steel coil with the expanding and contracting reel. The present application can fix the position of the steel coil during the process of sleeving the steel coil to the outside of the expanding and contracting reel, reduce the safety hazard, and meanwhile can quickly align the inner ring of the steel coil with the expanding and contracting reel, and improve the uncoiling efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of steel coil processing, and specifically to a steel coil positioning device and positioning method. Background Technology

[0002] In traditional sheet metal pressing production lines, an uncoiler, a leveler, and a stamping machine are typically connected sequentially in the processing order to form a continuous sheet metal pressing process. The standard operating steps are as follows: First, the uncoiler gradually unwinds the tightly coiled steel into a continuous sheet; then, the sheet is conveyed to the leveler to correct any bends and improve its flatness; finally, the operator places the leveled sheet into the stamping machine for pressing and shaping.

[0003] The main component of the uncoiler in the above production line is an expansion and contraction drum that can rotate and expand or contract radially. In the initial state, the expansion and contraction drum is stationary and in a contracted state, which makes it easy for the operator to pass the expansion and contraction drum through the inner ring of the steel coil and put the steel coil on the outside of the expansion and contraction drum. Then, the uncoiler is started to expand the expansion and contraction drum radially until the expansion and contraction drum tightens and fixes the steel coil. Then, the expansion and contraction drum drives the steel coil to rotate for uncoiling.

[0004] However, in the existing technology, the steel coil needs to be lifted by a hoist and then manually pushed by the operator to the expansion and contraction drum to fit the steel coil onto the outside of the drum. In this process, the operator needs to work with the hoist to repeatedly adjust the position of the steel coil to align the inner circle of the steel coil with the expansion and contraction drum before fitting the steel coil onto the outside of the drum. This is very time-consuming and labor-intensive, reducing the uncoiling efficiency. Moreover, during the repeated adjustment and movement of the steel coil, the lifted steel coil is prone to shaking. Since the steel coil is large and heavy, the shaking steel coil may cause a safety accident by hitting the uncoiling machine or even injuring the operator. Summary of the Invention

[0005] The present invention aims to provide a steel coil positioning device and a positioning method thereof, which can fix the position of the steel coil during the process of putting the steel coil over the expansion and contraction drum, thereby reducing safety hazards. At the same time, it can enable the inner ring of the steel coil to quickly align with the expansion and contraction drum, thereby improving the uncoiling efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: 1) A steel coil positioning device, comprising an uncoiler having an expansion and contraction drum, a transport structure on one side of the uncoiler, the transport structure including a sliding member capable of reciprocating along the axial direction of the expansion and contraction drum, a lifting member on the sliding member for carrying the steel coil and capable of lifting and lowering, a limiting member on the lifting member for fixing the position of the steel coil, and an alignment member for assisting the inner ring of the steel coil to align with the expansion and contraction drum.

[0007] In this invention, a hoist lifts the steel coil onto a lifting member. Then, by adjusting the height of the lifting member and cooperating with the alignment member, the inner ring of the steel coil is aligned with the expansion and contraction drum. Next, the sliding member is activated to move towards the expansion and contraction drum, driving the lifting member and the steel coil on the lifting member to move towards the expansion and contraction drum. At the same time, the position of the steel coil is fixed by the limiting member to reduce the possibility of the steel coil slipping off the lifting member, until the expansion and contraction drum passes through the inner ring of the steel coil and puts the steel coil over the expansion and contraction drum. Then, the uncoiler is activated to make the expansion and contraction drum expand radially until the expansion and contraction drum tightens and fixes the steel coil. Then, the expansion and contraction drum drives the steel coil to rotate for uncoiling, while the sliding member drives the lifting member to move and reset.

[0008] In summary, in this invention, the position of the steel coil is fixed by the limiting component, which reduces the possibility of the steel coil slipping off the lifting component, thereby reducing safety hazards. At the same time, by using the lifting component in conjunction with the alignment component to align the inner circle of the steel coil with the expansion and contraction drum, compared with the method of manually adjusting the position of the steel coil with the hoist to align it with the expansion and contraction drum, the speed of aligning the inner circle of the steel coil with the expansion and contraction drum is increased, thereby improving the uncoiling efficiency.

[0009] 2) A steel coil positioning device according to 1), wherein: The sliding component includes a base, with a mounting slot on the top of the base. A linear motor is fixedly connected in the mounting slot. A sliding platform that can reciprocate along the axial direction of the expanding and contracting drum is slidably connected on the slide rail of the linear motor. A support base is fixedly connected to the top of the sliding platform, and the top of the support base is fixedly connected to the lifting component.

[0010] In this invention, after aligning the inner ring of the steel coil with the expansion and contraction drum, the linear motor is started, and the sliding platform drives the support seat to move towards the expansion and contraction drum. In turn, the support seat drives the lifting component and the steel coil to move towards the expansion and contraction drum until the steel coil is fitted onto the outside of the expansion and contraction drum. This method saves manpower compared to the method of operators manually cooperating with a hoist to fit the steel coil onto the expansion and contraction drum.

[0011] 3) A steel coil positioning device and positioning method according to 2), wherein: The lifting component includes several cylinders fixedly connected to the top of the support base, and the top of the piston rods of all cylinders are fixedly connected to a feeding platform for carrying steel coils.

[0012] In this invention, after the steel coil is placed on the unloading platform, the cylinder is activated, and the piston rod of the cylinder drives the unloading platform to rise and fall. With the help of the alignment component, the inner ring of the steel coil is aligned with the expansion and contraction drum. After alignment, the linear motor is activated, and the sliding platform drives the support seat to move towards the expansion and contraction drum. Thus, the support seat drives the cylinder, the unloading platform, and the steel coil to move towards the expansion and contraction drum until the steel coil is fitted onto the outside of the expansion and contraction drum. Compared with the method of operators manually using a hoist to fit the steel coil onto the expansion and contraction drum, this method saves manpower.

[0013] 4) A steel coil positioning device according to 3), wherein: The limiting component includes an unwinding groove for placing steel coils, which is located on the top of the unwinding platform. The axis of the unwinding groove is in the same vertical plane as the axis of the expansion and contraction drum. It also includes several limiting rods. Several limiting holes for the insertion of the limiting rods are symmetrically provided on both sides of the unwinding groove, and the limiting holes are located on the top of the unwinding platform.

[0014] In this invention, when the steel coil is placed on the unwinding platform, it is placed in the unwinding groove. The two inner sidewalls of the unwinding groove can abut against the circumference of the steel coil, preventing it from rolling. After the steel coil is placed in the unwinding groove, limiting rods are inserted into the limiting holes near both ends of the steel coil to prevent it from sliding back and forth. Thus, the position of the steel coil is fixed on the unwinding platform by the cooperation of the unwinding groove and the limiting rods, reducing the possibility of the steel coil falling off the unwinding platform and reducing safety hazards. Since several limiting holes are symmetrically provided on both sides of the unwinding groove, the position of steel coils of different lengths can be restricted by adjusting the insertion of the limiting rods into different limiting holes. At the same time, since the axis of the unwinding groove and the axis of the expansion and contraction drum are in the same vertical plane, the axis of the steel coil on the unwinding shaft can be in the same vertical plane as the axis of the expansion and contraction drum. By simply raising and lowering the unwinding platform with a cylinder to adjust the height of the steel coil, the inner ring of the steel coil can be aligned with the expansion and contraction drum, increasing the speed of aligning the inner ring of the steel coil with the expansion and contraction drum, thereby improving the unwinding efficiency.

[0015] 5) A steel coil positioning device according to 4), wherein: The alignment component includes a support rod, which is detachably connected to the support base on the side opposite to the expansion and contraction drum. A connecting plate that can extend into the inner ring of the steel coil is fixedly connected to the top of the support rod. A pressure plate that can fit against the connecting plate is provided below the connecting plate. When the pressure plate fits against the connecting plate, the lowest point of the bottom is flush with the lowest point of the expansion and contraction drum. A groove is opened on the top of the pressure plate. A first spring is fixedly connected between the connecting plate and the groove. The bottom of the pressure plate has an arc-shaped structure that can fit against the inner ring of the steel coil.

[0016] In this invention, after the steel coil is placed in the unwinding groove, the operator detachably connects the support rod and the support base to the side away from the expansion and contraction drum, allowing the connecting plate at the top of the support rod, along with the first spring and the pressure plate, to extend into the inner ring of the steel coil. Then, the cylinder is activated to move the unwinding platform and the steel coil upwards. When the inner wall of the steel coil contacts the pressure plate, the pressure plate is pushed upwards by the steel coil until it is in contact with the connecting plate. During the upward movement of the pressure plate, the first spring continuously contracts under the thrust of the pressure plate and is eventually contained within the groove. At this point, the pressure plate presses tightly against the inner ring of the steel coil. Since the lowest point of the pressure plate is flush with the lowest point of the expansion and contraction drum when it is in contact with the connecting plate, the operation is performed accordingly. Therefore, at this point, the lowest point of the inner coil of the steel coil is level with the lowest point of the expansion and contraction drum. Then, the linear motor is started to drive the support base to move the unloading platform and the steel coil towards the expansion and contraction drum. Since the lowest point of the inner coil of the steel coil is level with the lowest point of the expansion and contraction drum, the steel coil can be wrapped around the expansion and contraction drum as it moves towards the drum. When the steel coil moves to the point where it extends into the inner coil of the expansion and contraction drum, the linear motor stops the movement of the steel coil, and the operator removes the support rod. At this time, the connecting plate and the pressure plate are removed along with the support rod, which will not hinder the expansion and contraction drum from continuing to extend into the inner coil of the steel coil. Then, the linear motor continues to move the steel coil until it is wrapped around the expansion and contraction drum.

[0017] In the above process, it is only necessary to activate the cylinder to lift the steel coil to the inner circle of the steel coil and push the pressure plate and the connecting plate to fit together, so as to align the inner circle of the steel coil with the expansion and contraction drum. Therefore, compared with the method of operators working with the hoist to repeatedly adjust the position of the steel coil, it is possible to align the inner circle of the steel coil with the expansion and contraction drum more quickly, thereby improving the uncoiling efficiency. Secondly, after the pressure plate presses the inner circle of the steel coil, the position of the steel coil is further fixed on the unloading platform, reducing the possibility of the steel coil falling off the unloading platform and reducing safety hazards.

[0018] 6) A steel coil positioning device according to 5), wherein: A guide rod is fixedly connected to the bottom of the groove, and the upper end of the guide rod passes through the connecting plate and is slidably connected to the connecting plate.

[0019] In this invention, as the pressure plate moves upward under the push of the steel coil, the guide rod in the groove of the pressure plate slides upward with the pressure plate. The guide rod restricts the position of the pressure plate from shifting, so that the pressure plate can press the inner ring of the steel coil and fix the position of the steel coil on the unloading platform, reducing the possibility of the steel coil falling off the unloading platform and reducing safety hazards.

[0020] 7) A steel coil positioning device according to 6), wherein: A tube is fixedly connected to the top of the connecting plate. One side of the tube is slidably connected to the guide rod. A rod is inserted through the tube. A second spring is fixedly connected between the rod and the connecting plate. A locking slot is opened on the rod. A locking block is inserted through the locking slot. A third spring is fixedly connected between the locking block and the locking slot. The end of the locking block away from the locking slot is arc-shaped. A locking opening for the locking block to pass through is opened on the side of the tube that is slidably connected to the guide rod. The locking opening is located above the guide rod. A vertical groove is opened inside the tube. A moving block that can move along the axial direction of the tube is slidably connected in the vertical groove. The moving block is fixedly connected to the rod. When the moving block moves to the top of the vertical groove, the top of the rod is flush with the highest point of the expansion and contraction drum.

[0021] In this invention, initially, the second spring is compressed, and the locking block passes through the locking slot to fix the position of the rod. Then, as the steel coil moves upward, the inner ring of the coil pushes the pressure plate, causing the guide rod to move upward. Because the locking slot is located on the side where the tube body and guide rod slide together, and the end of the locking block away from the locking slot is arc-shaped, the top of the guide rod can push the locking block into the locking slot as the guide rod moves upward until the locking block enters the slot. At this point, the third spring is compressed while the second spring is stretched and reset, pushing the rod upward. The top of the rod abuts against the inner ring of the steel coil. During the movement of the rod, the moving block slides upward with the rod in the vertical groove. As the steel coil continues to move upward, the second spring... Continue pushing the rod upwards until the moving block moves with the rod to the top of the vertical groove. At this point, the top of the rod is level with the highest point of the expansion and contraction drum. The operator can use the rod as a reference to adjust the height of the steel coil. It is not necessary to raise the steel coil completely until the pressure plate and the connecting plate are in contact. It is only necessary to make the highest point of the inner circle of the steel coil higher than the top of the rod. At this point, the lowest point of the inner circle of the steel coil is lower than the lowest point of the expansion and contraction drum, and the highest point of the inner circle of the steel coil is higher than the highest point of the expansion and contraction drum. Then start the linear motor to move the steel coil toward the expansion and contraction drum. This will make the steel coil fit snugly around the outside of the expansion and contraction drum. Compared with just aligning the lowest point of the inner circle of the steel coil with the lowest point of the expansion and contraction drum, the possibility of scraping between the expansion and contraction drum and the inner circle of the steel coil is reduced.

[0022] 8) A steel coil positioning device according to 5), wherein: The support base has a storage groove for accommodating the support rod. Two sliding grooves are symmetrically opened on the two inner side walls of the storage groove. A slider that can slide along the axial direction of the storage groove is slidably connected between the two sliding grooves. A magnetic block is fixedly connected to the bottom of the storage groove and the side of the slider facing the bottom of the storage groove. A connecting block is fixedly connected to the side of the slider facing the opening of the storage groove. The connecting block is hinged to the bottom end of the support rod. A limiting block is fixedly connected in the sliding groove near the opening of the storage groove to prevent the slider from sliding out of the sliding groove.

[0023] In this invention, after the support rod is detached from the support base, the operator can flip the support rod outward, then grasp the connecting plate and push the support rod into the storage groove. The support rod pushes the connecting block and the slider to slide towards the bottom of the storage groove until the magnetic block on the slider and the magnetic block in the storage groove are attracted to each other, thus completing the storage of the support rod. The attraction between the two magnetic blocks prevents the support rod from sliding out of the storage groove. When it is necessary to detachably connect the support rod and the support base to the side away from the expansion drum, the operator can grasp the connecting plate and pull the support rod outward, then flip the support rod upward, and then detachably connect the support rod to the side wall of the support base. This makes it more convenient to store and use the support rod. In the process of pulling the support rod outward, the slider that slides with the support rod will be intercepted by the limiting block, preventing the slider from sliding out of the groove, thus enabling normal storage and use of the support rod.

[0024] 9) A steel coil positioning device and positioning method according to any one of 1)-8), wherein: Step 1: Place the steel coil onto the lifting device; Step 2: Secure the position of the steel coil using the limiting components on the lifting device; Step 3: Align the inner ring of the steel coil with the expansion and contraction drum using the lifting and aligning components; Step 4: The lifting component and the steel coil on the lifting component are moved towards the expansion and contraction drum by the sliding component until the expansion and contraction drum is fitted outside the expansion and contraction drum. Step 5: Start the uncoiler to expand the expansion drum radially until it tightens and fixes the steel coil. Then, the expansion drum drives the steel coil to rotate and uncoil.

[0025] In this invention, the position of the steel coil is first fixed on the lifting member by the limiting member, reducing the possibility of the steel coil falling off the lifting member and thus reducing safety hazards. Then, the lifting member, in conjunction with the alignment member, aligns the inner ring of the steel coil with the expansion and contraction drum. Compared with the method of manually adjusting the position of the steel coil with the hoist, this method increases the speed of aligning the inner ring of the steel coil with the expansion and contraction drum, thereby improving the uncoiling efficiency. Furthermore, the steel coil is moved throughout the process by the lifting member and the sliding member, ultimately fixing the steel coil to the expansion and contraction drum. The expansion and contraction drum then drives the steel coil to rotate for uncoiling, saving manpower.

[0026] Compared with the prior art, the present invention also has the following technical effects: This invention provides a steel coil positioning device and method. The device uses an unwinding groove and a limiting rod to fix the position of the steel coil on the unwinding platform, reducing the possibility of the coil falling off. A pressure plate and a guide rod work together to assist the inner coil of the steel coil in quickly aligning with the expansion and contraction drum during its ascent. Throughout the process, a cylinder lifts and lowers the steel coil, while a linear motor moves it towards the expansion and contraction drum until it is fitted onto the drum. The coil is then tightened and fixed by the radially expanding drum and rotated to unwind. In summary, this invention integrates transportation, lifting, positioning, and alignment functions, saving manpower and improving the efficiency and safety of steel coil unwinding.

[0027] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a steel coil positioning device according to the present invention; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 Schematic diagram of the structure of surface AA; Figure 4 for Figure 1 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the tube and rod in a steel coil positioning device according to the present invention; Figure 6 This is a schematic diagram illustrating the steps of a steel coil positioning device and positioning method according to the present invention.

[0029] The reference numerals in the accompanying drawings of the instruction manual include: 1. Expansion / contraction drum; 2. Base; 3. Linear motor; 4. Sliding platform; 5. Support seat; 6. Cylinder; 7. Unloading platform; 8. Unloading groove; 9. Limiting rod; 10. Limiting hole; 11. Support rod; 12. Connecting plate; 13. Pressure plate; 14. Groove; 15. First spring; 16. Tube body; 17. Rod body; 18. Second spring; 19. Locking slot; 20. Locking block; 21. Third spring; 22. Locking opening; 23. Vertical groove; 24. Moving block; 25. Guide rod; 26. Receiving groove; 27. Sliding groove; 28. Sliding block; 29. ​​Magnetic block; 30. Connecting block; 31. Limiting block; 32. Steel coil. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0035] See the example. Figure 1 , Figure 2 and Figure 3As shown, this embodiment is a steel coil positioning device, including an uncoiler with an expanding and contracting drum 1. A base 2 is provided on one side of the uncoiler. A mounting slot is formed on the top of the base 2, and a linear motor 3 is embedded in the mounting slot. A sliding platform 4, capable of reciprocating along the axial direction of the expanding and contracting drum 1, is slidably connected to the slide rail of the linear motor 3. A support base 5 is fixedly connected to the top of the sliding platform 4 by bolts and nuts. Four mounting slots are formed on the top of the support base 5, located at the four corners of the support base 5. Air-filled components are embedded in the mounting slots. Cylinder 6, the top of the piston rod of all cylinders 6 is connected to the unloading platform 7 for carrying steel coil 32. The piston rod is fixedly connected to the unloading platform 7 by bolts and nuts. The top of the unloading platform 7 has an unwinding groove 8 for placing steel coil 32. The two inner side walls of the unwinding groove 8 are inclined inward in a V-shaped structure. The axis of the unwinding groove 8 is in the same vertical plane as the axis of the expansion and contraction drum 1. It also includes four limiting rods 9. Several limiting holes 10 for the insertion of the limiting rods 9 are symmetrically opened on both sides of the unwinding groove 8. The limiting holes 10 are opened on the top of the unloading platform 7.

[0036] In this embodiment, see Figure 1 , Figure 3 and Figure 5 As shown, a support rod 11 is detachably connected to the side of the support base 5 away from the expansion and contraction drum 1. Specifically, the side wall of the support base 5 and the support rod 11 are detachably connected by a wing bolt and nut. A connecting plate 12 that can extend into the inner ring of the steel coil 32 is welded to the top of the support rod 11. A pressure plate 13 that can fit against the connecting plate 12 is provided below the connecting plate 12. When the pressure plate 13 fits against the connecting plate 12, the bottom height is flush with the lowest point of the expansion and contraction drum 1. A groove 14 is opened on the top of the pressure plate 13. A first spring 15 is welded between the connecting plate 12 and the groove 14. A guide rod 25 coaxial with the first spring 15 is welded to the bottom of the groove 14. The upper end of the guide rod 25 passes through the connecting plate 12 and is clearance-fitted with the connecting plate 12. The bottom of the pressure plate 13 has an arc-shaped structure that can fit against the inner ring of the steel coil 32.

[0037] In this embodiment, see Figure 3 and Figure 5As shown, a tube 16 is welded to the top of the connecting plate 12. One side of the tube 16 abuts against the guide rod 25 and can slide relative to it. A rod 17 is inserted inside the tube 16. A second spring 18 is welded between the rod 17 and the connecting plate 12. A locking slot 19 is opened on the rod 17. A locking block 20 is inserted inside the locking slot 19. A third spring 21 is welded between the locking block 20 and the locking slot 19. The end of the locking block 20 away from the locking slot 19 is arc-shaped. A slot 22 for the locking block 20 to pass through is opened on the side of the tube 16 that abuts against the guide rod 25. The slot 22 is located above the guide rod 25. A vertical groove 23 is opened inside the tube 16. A moving block 24 that can move along the axial direction of the tube 16 is fitted in the vertical groove 23. The moving block 24 is welded to the rod 17. When the moving block 24 moves to the top of the vertical groove 23, the top of the rod 17 is flush with the highest point of the expansion and contraction drum 1.

[0038] In this embodiment, see Figure 1 and Figure 4 As shown, the support base 5 has a storage groove 26 for accommodating the support rod 11 on the side away from the expansion and contraction drum 1. Two sliding grooves 27 are symmetrically opened on the two inner side walls of the storage groove 26. A slider 28 that can slide along the axial direction of the storage groove 26 is slidably connected between the two sliding grooves 27. A magnetic block 29 is welded to the bottom of the storage groove 26 and the side of the slider 28 facing the bottom of the storage groove 26, respectively. A connecting block 30 is welded to the side of the slider 28 facing the opening of the storage groove 26. The connecting block 30 is hinged to the bottom end of the support rod 11. A limiting block 31 that prevents the slider 28 from sliding out of the sliding groove 27 is welded inside the sliding groove 27 near the opening of the storage groove 26.

[0039] In this embodiment, see Figure 6 As shown, the specific implementation steps of a steel coil positioning device and its positioning method in this embodiment are as follows: Step 1: The steel coil 32 is hoisted into the unwinding groove 8 of the unwinding platform 7 using a hoist. Since the two inner side walls of the unwinding groove 8 are inclined inward in a V-shape, they can abut against the circumference of the steel coil 32, preventing the steel coil 32 from rolling. At the same time, since the axis of the unwinding groove 8 is in the same vertical plane as the axis of the expansion and contraction drum 1, the axis of the steel coil 32 on the unwinding shaft can be in the same vertical plane as the axis of the expansion and contraction drum 1. In subsequent steps, the height of the steel coil 32 can be adjusted by raising and lowering the unwinding platform 7 using the cylinder 6, thereby aligning the inner ring of the steel coil 32 with the expansion and contraction drum 1, increasing the speed at which the inner ring of the steel coil 32 is aligned with the expansion and contraction drum 1, and thus improving the unwinding efficiency.

[0040] Step 2: Insert the limiting rods 9 into the limiting holes 10 near both ends of the steel coil 32 to prevent the steel coil 32 from sliding back and forth. In this way, the position of the steel coil 32 is fixed on the unwinding table 7 by the cooperation of the unwinding groove 8 and the limiting rods 9, which reduces the possibility of the steel coil 32 falling off the unwinding table 7 in subsequent steps, thereby reducing safety hazards.

[0041] Step 3: Connect the support rod 11 and the support base 5 on the side away from the expansion drum 1 using wing nuts and bolts. This allows the connecting plate 12 at the top of the support rod 11, along with the first spring 15, pressure plate 13, guide rod 25, tube 16, and rod 17, to extend into the inner ring of the steel coil 32. At this time, the second spring 18 is compressed, and the locking block 20 passes through the locking slot 22 to fix the position of the rod 17. Then, activate the cylinder 6. The piston rod of the cylinder 6 drives the unloading platform 7 and the steel coil 32 upwards. The inner ring of the steel coil 32 pushes the pressure plate 13, which in turn drives the guide rod 25 upwards. Since the locking slot 22 is located on the side where the tube 16 and guide rod 25 slide together, and the end of the locking block 20 away from the locking slot 19 is arc-shaped, the guide rod 25 moves upwards... During the movement, the top of the guide rod 25 can push the locking block 20 into the locking block groove 19 until the locking block 20 enters the locking block groove 19. At this time, the third spring 21 is compressed and the second spring 18 is stretched and reset, pushing the rod 17 to move upward. The top of the rod 17 abuts against the inner ring of the steel coil 32. During the movement of the rod 17, the moving block 24 slides upward in the vertical groove 23 with the rod 17. As the steel coil 32 continues to move upward, the second spring 18 continues to push the rod 17 upward until the moving block 24 moves to the top of the vertical groove 23 with the rod 17. At this time, the top of the rod 17 is level with the highest point of the expansion and contraction drum 1. The operator can use the rod 17 as a reference to adjust the height of the steel coil 32 through the cylinder 6. During the height adjustment of the steel coil 32, it is not necessary to raise the steel coil 32 completely until the pressure plate 13 is in contact with the connecting plate 12. It is only necessary to move the steel coil 32 upwards until the inner ring of the steel coil 32 does not abut against the top of the rod 17. Since the bottom of the pressure plate 13 is flush with the lowest point of the expansion and contraction drum 1 when it is in contact with the connecting plate 12, and the top of the rod 17 is flush with the highest point of the expansion and contraction drum 1 at this time, when the operator adjusts the height of the steel coil 32 until the inner ring of the steel coil 32 does not abut against the top of the guide rod 25, and the pressure plate 13 is not completely in contact with the connecting plate 12, the lowest point of the inner ring of the steel coil 32 is lower than the lowest point of the expansion and contraction drum 1. The highest point of the inner ring of coil 32 is higher than the highest point of the expansion and contraction drum 1. In subsequent steps, the linear motor 3 is started to move the steel coil 32 toward the expansion and contraction drum 1, so that the steel coil 32 fits precisely around the expansion and contraction drum 1 without contact between the inner ring of the steel coil 32 and the expansion and contraction drum 1. Compared with only aligning the lowest point of the inner ring of the steel coil 32 with the lowest point of the expansion and contraction drum 1, this reduces the possibility of scraping between the expansion and contraction drum 1 and the inner ring of the steel coil 32. At the same time, the pressure plate 13 presses down on the inner ring of the steel coil 32, further fixing the position of the steel coil 32 on the unloading platform 7, reducing the possibility of the steel coil 32 falling off the unloading platform 7 in subsequent steps, thereby reducing safety hazards.

[0042] Step 4: Start the linear motor 3. The sliding platform 4 drives the support seat 5 to move towards the expansion and contraction drum 1. The support seat 5 drives the cylinder 6, the feeding platform 7 and the steel coil 32 to move towards the expansion and contraction drum 1. When the steel coil 32 moves to the point where the expansion and contraction drum 1 partially extends into the inner circle of the steel coil 32, the linear motor 3 stops moving the steel coil 32. The operator unscrews the wing nut to remove the support rod 11 from the side wall of the support seat 5. At this time, the connecting plate 12 and the pressure plate 13 are removed along with the support rod 11. This will not prevent the expansion and contraction drum 1 from continuing to extend into the inner circle of the steel coil 32. Then, the linear motor 3 continues to move the steel coil 32 until the steel coil 32 is wrapped around the expansion and contraction drum 1. After the support rod 11 is separated from the support base 5, the operator can flip the support rod 11 outward, and then grasp the connecting plate 12 to push the support rod 11 into the storage groove 26. The support rod 11 pushes the connecting block 30 and the slider 28 to slide towards the bottom of the storage groove 26 in the sliding groove 27 until the magnetic block 29 on the slider 28 and the magnetic block 29 in the storage groove 26 are attracted to each other, thus completing the storage of the support rod 11. The attraction between the two magnetic blocks 29 restricts the support rod 11 from sliding out of the storage groove 26. Then the operator can press the rod body 17 to move it into the tube body 16 until the locking block 20 moves down with the rod body 17 to the position of the locking slot 22. The third spring 21 stretches and resets, pushing the locking block 20 to move out of the locking slot 19, so that the locking block 20 passes through the locking slot 22 and fixes the position of the rod body 17. When it is necessary to detachably connect the support rod 11 to the support base 5 on the side away from the expansion drum 1, the operator can grasp the connecting plate 12 to pull out the support rod 11, then flip the support rod 11 upwards, and then detachably connect the support rod 11 to the side wall of the support base 5 using wing screws and nuts. This makes it convenient to store and use the support rod 11. In the process of pulling out the support rod 11, the slider 28 that slides with the support rod 11 will be intercepted by the limiting block 31, so that the slider 28 will not slide out of the slide groove 27, thus enabling the support rod 11 to be stored and used normally.

[0043] Step 5: Start the uncoiler to expand the expansion drum 1 radially until the expansion drum 1 tightens and fixes the steel coil 32. Then, the expansion drum 1 drives the steel coil 32 to rotate and unwind.

[0044] The above are merely embodiments of the present invention. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this invention. These modifications and improvements should also be considered within the scope of protection of this invention, and will not affect the effectiveness of the implementation of this invention or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A steel coil positioning device, comprising an uncoiler, said uncoiler having an expanding and contracting drum, characterized in that, The uncoiler is provided with a transport structure on one side. The transport structure includes a sliding member that can reciprocate along the axial direction of the expansion and contraction drum. The sliding member is provided with a lifting member for carrying the steel coil and capable of lifting and lowering. The lifting member is provided with a limiting member for fixing the position of the steel coil. It also includes an alignment member for assisting the inner ring of the steel coil to align with the expansion and contraction drum.

2. The steel coil positioning device according to claim 1, characterized in that: The sliding component includes a base with a mounting slot at the top. A linear motor is fixedly connected in the mounting slot. A sliding platform capable of reciprocating along the axial direction of the expanding and contracting drum is slidably connected on the slide rail of the linear motor. A support base is fixedly connected to the top of the sliding platform, and the top of the support base is fixedly connected to the lifting component.

3. A steel coil positioning device according to claim 2, characterized in that: The lifting component includes several cylinders fixedly connected to the top of the support base, and the top of the piston rods of all cylinders are fixedly connected to a feeding platform for carrying steel coils.

4. A steel coil positioning device according to claim 3, characterized in that: The limiting component includes an unwinding groove for placing steel coils, the unwinding groove being opened at the top of the unwinding platform, the axis of the unwinding groove being in the same vertical plane as the axis of the expansion and contraction drum, and also includes several limiting rods, with several limiting holes for the insertion of the limiting rods symmetrically provided on both sides of the unwinding groove, the limiting holes being opened at the top of the unwinding platform.

5. A steel coil positioning device according to claim 2, characterized in that: The alignment component includes a support rod, which is detachably connected to the support seat on the side opposite to the expansion and contraction drum. A connecting plate that can extend into the inner ring of the steel coil is fixedly connected to the top of the support rod. A pressure plate that can fit against the connecting plate is provided below the connecting plate. When the pressure plate fits against the connecting plate, the lowest point of the bottom is flush with the lowest point of the expansion and contraction drum. A groove is opened on the top of the pressure plate. A first spring is fixedly connected between the connecting plate and the groove. The bottom of the pressure plate has an arc-shaped structure that can fit against the inner ring of the steel coil.

6. A steel coil positioning device according to claim 5, characterized in that: A guide rod is fixedly connected to the bottom of the groove, and the upper end of the guide rod passes through the connecting plate and is slidably connected to the connecting plate.

7. A steel coil positioning device according to claim 6, characterized in that: A tube is fixedly connected to the top of the connecting plate. One side of the tube is slidably connected to a guide rod. A rod is inserted through the tube. A second spring is fixedly connected between the rod and the connecting plate. A locking slot is opened on the rod. A locking block is inserted into the locking slot. A third spring is fixedly connected between the locking block and the locking slot. The end of the locking block away from the locking slot is arc-shaped. A locking opening for the locking block to pass through is opened on the side of the tube that is slidably connected to the guide rod. The locking opening is located above the guide rod. A vertical groove is opened inside the tube. A moving block that can move along the axial direction of the tube is slidably connected in the vertical groove. The moving block is fixedly connected to the rod. When the moving block moves to the top of the vertical groove, the top of the rod is flush with the highest point of the expansion and contraction drum.

8. A steel coil positioning device according to claim 5, characterized in that: The support base has a storage groove for accommodating the support rod. Two sliding grooves are symmetrically opened on the two inner side walls of the storage groove. A slider that can slide along the axial direction of the storage groove is slidably connected between the two sliding grooves. A magnetic block is fixedly connected to the bottom of the storage groove and the side of the slider facing the bottom of the storage groove. A connecting block is fixedly connected to the side of the slider facing the opening of the storage groove. The connecting block is hinged to the bottom end of the support rod. A limiting block is fixedly connected in the sliding groove near the opening of the storage groove to prevent the slider from sliding out of the sliding groove.

9. A steel coil positioning device and positioning method according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Place the steel coil onto the lifting device; Step 2: Secure the position of the steel coil using the limiting components on the lifting device; Step 3: Align the inner ring of the steel coil with the expansion and contraction drum using the lifting and aligning components; Step 4: The lifting component and the steel coil on the lifting component are moved towards the expansion and contraction drum by the sliding component until the expansion and contraction drum is fitted outside the expansion and contraction drum. Step 5: Start the uncoiler to expand the expansion drum radially until it tightens and fixes the steel coil. Then, the expansion drum drives the steel coil to rotate and uncoil.

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