Steel coil feeding and unwinding device

Abstract

The invention discloses a steel coil feeding and unwinding device, which belongs to the field of steel coil feeding and unwinding and comprises a servo motor, a device shell, a tensioning structure, a connecting disc, a connecting shaft, a reset spring, an armature, an electromagnet, a turntable, a positioning hole, a locking block, an end face gear, a longitudinal gear, a rotating shaft, a first bevel gear, a second bevel gear, a rotating shaft, a pressing structure and a limiting structure. The mode that multi-stage gear transmission and a spring energy storage structure are combined is adopted, automatic sequential execution of tensioning and pressing actions is achieved, a rolling wheel can press a steel coil before tensioning is not completely completed through an energy storage mechanism of a spring box, the pressing timeliness and adaptability are improved, and the steel coil pressing efficiency is improved. The steel coil unwinding device can adapt to steel coils of different specifications without replacing corresponding clamps, and can be dynamically adjusted according to the actual state of the steel coils to compress the steel coils, so that material damage or equipment failure caused by the phenomena of loosening, deviation and the like of the steel coils in the unwinding process is prevented, and the production safety and the product quality are improved.

Description

Technical Field

[0001] The present invention relates to the field of steel coil feeding and uncoiling, and in particular to a steel coil feeding and uncoiling device. Background Art

[0002] Steel coils, also known as coil steel, are formed into coil shapes through hot pressing and cold pressing for convenient storage and transportation, thus facilitating subsequent transportation. However, after transportation, the steel coils need to be restored to a horizontal state before they can be used. In modern industrial production, steel coils are widely used as important raw materials in multiple fields such as automobile manufacturing, home appliance production, and building structures. During the transportation, storage, and processing of steel coils, there may be differences in their inner diameter sizes. At the same time, due to the large self-weight of the steel coils and their certain elastic deformation characteristics, problems such as loosening and offset are likely to occur during the uncoiling process, affecting the continuity and stability of subsequent processing.

[0003] Currently, traditional steel coil uncoiling devices usually can only adapt to a single specification of the inner diameter of the steel coil. When it is necessary to replace steel coils of different specifications, it is often necessary to replace the corresponding fixtures or perform complex adjustments, which is cumbersome to operate and has low efficiency. In addition, existing equipment cannot perform dynamic adjustment according to the actual state of the steel coil to clamp the steel coil, resulting in the steel coil being prone to loosening and offset during the uncoiling process, and even causing material damage or equipment failure, affecting production safety and product quality. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the background art, and a steel coil feeding and uncoiling device is designed.

[0005] To achieve the above object, the technical solution of the present invention is a steel coil feeding and unwinding device, which includes a servo motor, a device housing, a tensioning structure, a connecting disk, a connecting shaft, a return spring, an armature, an electromagnet, a turntable, positioning holes, locking blocks, end face gears, longitudinal gears, a rotating shaft, a first bevel gear, a second bevel gear, a rotating shaft, a pressing structure, and a limiting structure. The servo motor is fixedly installed inside the device housing. The tensioning structure is installed at the end of the output end of the servo motor. The connecting disk is fixedly installed at the middle position of the output end of the servo motor. Four connecting shafts are slidably installed on the connecting disk. The return spring is located inside the connecting disk and one end is fixedly installed on the connecting disk, and the other end of the return spring is fixedly installed on the connecting shaft. The armature is fixedly installed on the connecting shaft. The electromagnet is fixedly installed inside the connecting disk and its position is axially aligned with that of the armature. A number of positioning holes are formed on the turntable. The positioning holes are equidistantly distributed on the turntable with the center of the turntable as the center and are axially the same as the position of the connecting shaft. The turntable is rotatably installed on the device housing. The tensioning structure is installed outside the turntable. One end of the locking block is inserted into the device housing, and the other end of the locking block is inserted into the turntable. Four connecting shafts are respectively fixedly installed on the end face gears. The end face gears are meshed and connected with the longitudinal gears. One end of the rotating shaft is rotatably installed inside the device housing, and the other end of the rotating shaft is fixedly installed on the longitudinal gear. The first bevel gear is fixedly installed at the middle position of the rotating shaft. The first bevel gear is meshed and connected with the second bevel gear. The second bevel gear is fixedly installed on the rotating shaft. The rotating shaft is rotatably installed on the device housing. The pressing structure is installed at the end of the rotating shaft. The limiting structure is installed on the device housing and the rotating shaft.

[0006] Furthermore, the tensioning structure includes a central shaft, arc-shaped blocks, sliding rods, support plates, and fixed cylinders. The central shaft is fixedly installed on the output end of the servo motor. There are eight arc-shaped blocks in total, and every four arc-shaped blocks form a group. Each group of arc-shaped blocks is equidistantly fixedly installed on the central shaft. One end of the sliding rod is slidably installed on the arc-shaped block, and the other end of the sliding rod is fixedly installed on the support plate. The middle part of the sliding rod is slidably installed on the fixed cylinder, and the fixed cylinder is fixedly installed on the turntable.

[0007] Furthermore, the pressing structure includes a spring box, a pressing plate, and rollers. The spring box is fixedly installed on the rotating shaft. One end of the pressing plate is fixedly installed on the output shaft of the spring box, and the rollers are rotatably installed at the other end of the pressing plate.

[0008] Furthermore, the limiting structure includes a ratchet wheel, a pressing rod, ratchet teeth, and a pressing spring. The ratchet wheel is fixedly installed on the rotating shaft. The pressing rod is slidably installed on the device housing. The ratchet teeth are fixedly installed at one end of the pressing rod. The ratchet teeth are meshed and connected with the ratchet wheel. The pressing spring is sleeved on the pressing rod and one end is fixedly installed on the device housing, and the other end of the pressing spring is fixedly installed on the ratchet teeth.

[0009] Furthermore, an installation base is provided on the device housing, and the installation base is fixedly installed below the device housing.

[0010] Furthermore, a guiding groove is provided on the turntable. The guiding groove is formed on the turntable. A guiding block is provided on the supporting plate. The guiding block is fixedly installed on the supporting plate and is slidably connected with the guiding groove.

[0011] Furthermore, a threaded layer is provided at the end of the central shaft. The threaded layer is formed at the end of the central shaft. A sleeve is provided on the threaded layer. The sleeve is connected with the threaded layer by thread engagement. A baffle is provided on the sleeve. The baffle is fixedly installed on the sleeve.

[0012] Furthermore, a rubber pad is provided on the roller. The rubber pad is fixedly installed on the roller.

[0013] Furthermore, a pressing cap is provided on the pressing rod. The pressing cap is fixedly installed on the pressing rod.

[0014] Beneficial effects:

[0015] The present invention provides a steel coil feeding and unwinding device, which has the following beneficial effects. Through its structural design, during use, first place the steel coil on the tensioning structure, start the servo motor to drive the connecting disk and the central shaft to rotate, so that the tensioning structure fits with the inner wall of the steel coil to achieve tensioning; at the same time, the end face gear drives the longitudinal gear and the rotating shaft to drive the pressing structure to operate. The pressing structure presses the outer ring of the steel coil in advance and stores elastic potential energy to achieve dynamic pressing; after tensioning, the electromagnet is energized to adsorb the armature, driving the connecting shaft to insert into the positioning hole of the turntable. After pulling out the locking block, start the servo motor again to drive the turntable and the tensioning structure to rotate synchronously for unwinding; during the unwinding process, the limiting structure prevents the pressing structure from rotating back, ensuring that the pressing force is continuously effective; after unwinding, insert the locking block back, turn off the electromagnet and reverse the servo motor to reset each component. After releasing the limit of the limiting device, the device returns to the initial state. Compared with the prior art, the present invention combines the precise drive of the servo motor, multi-stage gear transmission and the spring energy storage structure, not only realizes the automatic sequential execution of the tensioning and pressing actions, but also enables the roller to press the steel coil before the tensioning is completely completed through the energy storage mechanism of the spring box, improving the timeliness and adaptability of pressing. Without replacing the corresponding fixtures or making complex adjustments, it can adapt to steel coils of different specifications, and can dynamically adjust according to the actual state of the steel coil to press the steel coil, preventing phenomena such as loosening and offset of the steel coil during unwinding, resulting in material damage or equipment failure, and improving production safety and product quality. Description of the drawings

[0016] Figure 1 is a schematic structural diagram of the steel coil feeding and unwinding device described in the present invention;

[0017] Figure 2 is a schematic diagram of the internal structure of the back side of a steel coil feeding and uncoiling device according to the present invention;

[0018] Figure 3 is a schematic diagram of the front structure of a steel coil feeding and uncoiling device according to the present invention;

[0019] Figure 4 is a front sectional view of a steel coil feeding and uncoiling device according to the present invention;

[0020] Figure 5 is a schematic diagram of the top view structure of a steel coil feeding and uncoiling device according to the present invention;

[0021] Figure 6 is a top sectional view of a steel coil feeding and uncoiling device according to the present invention;

[0022] Figure 7 is as described in the present invention Figure 2 schematic diagram of the structure at position A shown;

[0023] Figure 8 is as described in the present invention Figure 6 schematic diagram of the internal structure at position A shown;

[0024] Figure 9 is a schematic diagram of the structure of a steel coil feeding and uncoiling device according to the present invention when installing a steel coil.

[0025] In the figure, 1, servo motor; 2, device housing; 3, tensioning structure; 4, connecting disk; 5, connecting shaft; 6, return spring; 7, armature; 8, electromagnet; 9, turntable; 10, positioning hole; 11, locking block; 12, end face gear; 13, longitudinal gear; 14, rotating shaft; 15, first bevel gear; 16, second bevel gear; 17, rotating shaft; 18, pressing structure; 19, limiting structure; 20, mounting base; 21, guide groove; 22, thread layer; 23, sleeve; 24, rubber pad; 25, pressing cap; 26, guide block; 27, baffle; 301, central shaft; 302, arc block; 303, sliding rod; 304, support plate; 305, fixed cylinder; 181, spring box; 182, pressing plate; 183, roller; 191, ratchet; 192, pressing rod; 193, ratchet tooth; 194, pressing spring. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "socketed", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Please refer to Figure 1-9, the present invention provides a technical solution: a steel coil feeding and unwinding device, including a servo motor 1, a device housing 2, a tensioning structure 3, a connecting disk 4, a connecting shaft 5, a return spring 6, an armature 7, an electromagnet 8, a turntable 9, positioning holes 10, a locking block 11, an end face gear 12, a longitudinal gear 13, a rotating shaft 14, a first bevel gear 15, a second bevel gear 16, a rotating shaft 17, a pressing structure 18, and a limiting structure 19. The servo motor 1 is fixedly installed inside the device housing 2. The tensioning structure 3 is installed at the end of the output end of the servo motor 1. The connecting disk 4 is fixedly installed at the middle position of the output end of the servo motor 1. Four connecting shafts 5 are slidably installed on the connecting disk 4. The return spring 6 is located inside the connecting disk 4 and one end is fixedly installed on the connecting disk 4, and the other end of the return spring 6 is fixedly installed on the connecting shaft 5. The armature 7 is fixedly installed on the connecting shaft 5. The electromagnet 8 is fixedly installed inside the connecting disk 4 and its position is axially aligned with that of the armature 7. A number of positioning holes 10 are provided on the turntable 9. The positioning holes 10 are equidistantly distributed on the turntable 9 centered on the center of the turntable 9 and are axially aligned with the connecting shaft 5. The turntable 9 is rotatably installed on the device housing 2. The tensioning structure 3 is installed outside the turntable 9. One end of the locking block 11 is inserted into the device housing 2, and the other end of the locking block 11 is inserted into the turntable 9. Four connecting shafts 5 are respectively fixedly installed on the end face gear 12. The end face gear 12 is engaged with the longitudinal gear 13. One end of the rotating shaft 14 is rotatably installed inside the device housing 2, and the other end of the rotating shaft 14 is fixedly installed on the longitudinal gear 13. The first bevel gear 15 is fixedly installed at the middle position of the rotating shaft 14. The first bevel gear 15 is engaged with the second bevel gear 16. The second bevel gear 16 is fixedly installed on the rotating shaft 17. The rotating shaft 17 is rotatably installed on the device housing 2. The pressing structure 18 is installed at the end of the rotating shaft 17. The limiting structure 19 is installed on the device housing 2 and the rotating shaft 17.

[0030] In the present invention, the tensioning structure 3 includes a central shaft 301, an arc-shaped block 302, a sliding rod 303, a support plate 304, and a fixed cylinder 305. The central shaft 301 is fixedly installed on the output end of the servo motor 1. There are eight arc-shaped blocks 302, and every four arc-shaped blocks 302 form a group. Each group of arc-shaped blocks 302 is equidistantly fixedly installed on the central shaft 301. One end of the sliding rod 303 is slidably installed on the arc-shaped block 302, and the other end of the sliding rod 303 is fixedly installed on the support plate 304. The middle part of the sliding rod 303 is slidably installed on the fixed cylinder 305. The fixed cylinder 305 is fixedly installed on the turntable 9. By running the servo motor 1 to drive the central shaft 301 to rotate, the central shaft 301 rotates to drive the arc-shaped block 302 to move around the central shaft 301 as the center. The movement of the arc-shaped block 302 drives the sliding rod 303 to slide outward of the fixed cylinder 305. The sliding of the sliding rod 303 outward of the fixed cylinder 305 drives the support plate 304 to move outward, and the support plate 304 moves outward and fits with the inner diameter of the steel coil, completing the adaptation work for the inner diameters of different specifications of steel coils.

[0031] In the present invention, the pressing structure 18 includes a spring box 181, a pressing plate 182, and a roller 183. The spring box 181 is fixedly installed on the rotating shaft 17. One end of the pressing plate 182 is fixedly installed on the output shaft of the spring box 181. The roller 183 is rotatably installed at the other end of the pressing plate 182. When the spring box 181 starts to rotate initially, there is no external force to obstruct the pressing plate 182, and the pressing plate 182 rotates along with the rotation of the spring box 181. When the pressing plate 182 rotates to a certain extent, the roller 183 fits against the outer ring of the steel coil, pressing the steel coil tightly to prevent the steel coil from loosening. At this time, the steel coil obstructs the rotation of the pressing plate 182, making the pressing plate 182 unable to move. Since the diameter of the end face gear 12 is larger than the diameter of the longitudinal gear 13, based on the principle of a large gear driving a small gear, when the end face gear 12 rotates one circle, it can drive the longitudinal gear 13 to rotate more circles. Similarly, the longitudinal gear 13 can drive the rotating shaft 17 to rotate more circles. Therefore, when the tensioning structure 3 has not completely fit with the inner diameter of the steel coil, the roller 183 has already been pressed against the outer ring of the steel coil. During the second half of the process when the tensioning structure 3 fits with the inner diameter of the steel coil as the servo motor 1 operates, the pressing plate 182 is limited and cannot rotate, so that the force is stored in the spring box 181. The force stored in the spring box 181 can be dynamically adjusted according to the actual state during the subsequent unwinding process of the steel coil to press the steel coil tightly.

[0032] In the present invention, the limiting structure 19 includes a ratchet wheel 191, a pressing rod 192, a ratchet tooth 193, and a pressing spring 194. The ratchet wheel 191 is fixedly installed on the rotating shaft 17. The pressing rod 192 is slidably installed on the device housing 2. The ratchet tooth 193 is fixedly installed at one end of the pressing rod 192. The ratchet tooth 193 is engaged with the ratchet wheel 191. The pressing spring 194 is sleeved on the pressing rod 192 and one end is fixedly installed on the device housing 2, and the other end of the pressing spring 194 is fixedly installed on the ratchet tooth 193. During the unwinding process of the steel coil, the ratchet tooth 193 prevents the ratchet wheel 191 from rotating back, and the ratchet wheel 191 is limited, thereby driving the rotating shaft 17 to be restricted from rotating, so that the pressing structure 18 always maintains the pressing on the outer ring of the steel coil. When resetting the tensioning structure 3 and the pressing structure 18, press the pressing rod 192 to separate the ratchet tooth 193 from the ratchet wheel 191 and start the servo motor 1 to reverse. The reverse rotation of the servo motor 1 drives the tensioning structure 3 and the pressing structure 18 to reset. After the tensioning structure 3 and the pressing structure 18 are reset, release the pressing rod 192. The pressing spring 194 drives the pressing rod 192 to reset. The reset of the pressing rod 192 drives the ratchet tooth 193 to engage with the ratchet wheel 191 again, making the whole device return to the initial state.

[0033] In the present invention, an installation base 20 is provided on the device housing 2. The installation base 20 is fixedly installed below the device housing 2, providing a stable basic support for the present invention through the installation base 20 below the device housing 2 to ensure that the entire device can operate safely and stably under various working conditions.

[0034] In the present invention, a guiding groove 21 is provided on the turntable 9. The guiding groove 21 is formed on the turntable 9. A guiding block 26 is provided on the support plate 304. The guiding block 26 is fixedly installed on the support plate 304 and is slidably connected with the guiding groove 21. By the cooperation of the guiding block 26 on the support plate 304 and the guiding groove 21 on the turntable 9, the support plate 304 can stably move along the predetermined trajectory of the guiding groove 21 during the tensioning process, ensuring the accuracy and synchronization of its expansion and contraction actions.

[0035] In the present invention, a threaded layer 22 is provided at the end of the central shaft 301. The threaded layer 22 is formed at the end of the central shaft 301. A sleeve 23 is provided on the threaded layer 22. The sleeve 23 is threadedly engaged with the threaded layer 22. A baffle 27 is provided on the sleeve 23. The baffle 27 is fixedly installed on the sleeve 23. By threadedly connecting the sleeve 23 to the tensioning structure 3 using the threaded layer 22, the baffle 27 is fixed to the outside of the steel coil, preventing the steel coil from falling off the tensioning structure 3.

[0036] In the present invention, a rubber pad 24 is provided on the roller 183. The rubber pad 24 is fixedly installed on the roller 183. By providing the rubber pad 24, not only the friction between the roller 183 and the outer ring of the steel coil is effectively increased, the pressing effect on the steel coil is improved, and the slipping phenomenon during the uncoiling process is prevented, but also the contact pressure can be buffered, avoiding scratches or indentations caused by the direct contact of the metal roller 183 with the surface of the steel coil and protecting the surface quality of the steel coil. At the same time, the rubber pad 24 can also reduce the noise generated during the operation of the roller 183 to a certain extent, improve the working environment, and make the device operate more smoothly and quietly.

[0037] In the present invention, a pressing cap 25 is provided on the pressing rod 192. The pressing cap 25 is fixedly installed on the pressing rod 192. By means of the pressing cap 25, a larger force application contact surface is obtained, improving the convenience and comfort of the operation and reducing the discomfort caused by the too small force-bearing area of the finger. At the same time, the setting of the pressing cap 25 helps to prevent the finger from slipping during the operation, improves the stability and safety of the pressing action, and avoids equipment damage or function failure caused by misoperation.

[0038] Those skilled in the art should connect all the electrical components in this case to their adapted power supplies through wires, and should select a suitable controller according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working in sequence in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0039] In this embodiment: The mounting base 20 below the device housing 2 provides a stable foundation support for the present invention, ensuring that the entire device can operate safely and stably under various working conditions. When the device needs to be used, first, the operator uses a forklift or other equipment to place the steel coil on the tensioning structure 3. The baffle 27 is fixed outside the steel coil by threadedly connecting the sleeve 23 to the tensioning structure 3 using the thread layer 22, preventing the steel coil from falling off the tensioning structure 3. After the steel coil is placed on the tensioning structure 3, the servo motor 1 located inside the device housing 2 is started. The operation of the servo motor 1 drives the connection disk 4 and the central shaft 301 to rotate. The rotation of the central shaft 301 drives the arc-shaped block 302 to move around the central shaft 301 as the center. The movement of the arc-shaped block 302 drives the sliding rod 303 to slide outward from the fixed cylinder 305. The sliding of the sliding rod 303 outward from the fixed cylinder 305 drives the support plate 304 to move outward. The support plate 304 moves outward and fits with the inner diameter of the steel coil. Through the cooperation of the guide block 26 on the support plate 304 and the guide groove 21 on the turntable 9, the support plate 304 can stably move along the predetermined trajectory of the guide groove 21 during the tensioning process, ensuring the accuracy and synchronization of its expansion and contraction actions.

[0040] At the same time, when the connection disk 4 rotates, it drives the connection shaft 5 to move around the connection disk 4 as the center. The movement of the connection shaft 5 drives the end face gear 12 to rotate together with the connection disk 4. The rotation of the end face gear 12 drives the longitudinal gear 13 to rotate. The rotation of the longitudinal gear 13 drives the rotating shaft 14 to rotate inside the device housing 2. The rotation of the rotating shaft 14 drives the first bevel gear 15 to rotate. The rotation of the first bevel gear 15 drives the second bevel gear 16 to rotate. The rotation of the second bevel gear 16 drives the rotating shaft 17 to rotate. The rotation of the rotating shaft 17 drives the spring box 181 in the pressing structure 18 to rotate.

[0041] When the mainspring box 181 starts to rotate initially, there is no external force hindering the pressing plate 182. The pressing plate 182 rotates along with the rotation of the mainspring box 181. When the pressing plate 182 rotates to a certain extent, the roller 183 fits with the outer ring of the steel coil, pressing the steel coil tightly to prevent the steel coil from loosening. At this time, the steel coil hinders the rotation of the pressing plate 182, making the pressing plate 182 unable to move. By setting the rubber pad 24, it not only effectively increases the friction force between the roller 183 and the outer ring of the steel coil, improves the pressing effect on the steel coil, and prevents slipping during the unwinding process, but also can buffer the contact pressure, avoiding scratches or indentations caused by the direct contact between the metal roller 183 and the surface of the steel coil, and protecting the surface quality of the steel coil. At the same time, the rubber pad 24 can also reduce the noise generated during the operation of the roller 183 to a certain extent, improve the working environment, and make the device operate more smoothly and quietly. Since the diameter of the face gear 12 is larger than the diameter of the longitudinal gear 13, according to the principle of amplifying the transmission ratio of the large gear driving the small gear, when the face gear 12 rotates one circle, it can drive the longitudinal gear 13 to rotate more circles. Similarly, the longitudinal gear 13 can drive the rotating shaft 17 to rotate more circles. Therefore, when the tensioning structure 3 has not completely fit with the inner diameter of the steel coil, the roller 183 has already been pressed tightly against the outer ring of the steel coil. During the second half of the process when the tensioning structure 3 fits with the inner diameter of the steel coil as the servo motor 1 operates, the pressing plate 182 is limited and cannot rotate, so the force is stored in the mainspring box 181. The force stored in the mainspring box 181 can be dynamically adjusted according to the actual state during the subsequent unwinding process of the steel coil to press the steel coil tightly.

[0042] When the tensioning structure 3 and the pressing structure 18 respectively fit with the inner diameter and the outer ring of the steel coil, stop the operation of the servo motor 1 and start the electromagnet 8 located inside the connecting disk 4. The electromagnet 8 is powered by a battery and supports remote start (infrared remote control). The suction force generated when the electromagnet 8 is started is greater than the elastic force of the return spring 6 itself. Therefore, it drives the armature 7 to move towards the direction of the electromagnet 8. The movement of the armature 7 drives the connecting shaft 5 to move towards the direction of the electromagnet 8. When the armature 7 adsorbs to the electromagnet 8, the end of the connecting shaft 5 is inserted into the positioning hole 10 inside the turntable 9. The servo motor 1 can accurately control the rotation angle of the output end. Therefore, the connecting shaft 5 can be aligned with the positioning holes 10 evenly distributed in a circular pattern inside the turntable 9.

[0043] After the connecting shaft 5 is inserted into the positioning hole 10, it drives the face gear 12 to no longer engage with the longitudinal gear 13. Then, pull out the locking block 11 inserted between the turntable 9 and the device housing 2 to unlock the turntable 9, making the turntable 9 no longer restricted from rotating. Then start the servo motor 1. The operation of the servo motor 1 drives the connecting disk 4 and the tensioning structure 3 to rotate. The rotation of the connecting disk 4 drives the connecting shaft 5 to move with the center of the connecting disk 4 as the center of the circle. The movement of the connecting shaft 5 drives the turntable 9 to rotate. The turntable 9 and the tensioning structure 3 rotate in the same direction and at the same speed simultaneously to drive the steel coil to rotate, thereby unwinding the steel coil and completing the unwinding process of the steel coil.

[0044] During the uncoiling process of the steel coil, the ratchet teeth 193 in the limit structure 19 prevent the ratchet wheel 191 from rotating. The ratchet wheel 191 is limited, thereby driving the rotation shaft 17 to be restricted from rotating. The restricted rotation of the rotation shaft 17 enables the pressing structure 18 to always maintain the pressing on the outer ring of the steel coil. After the uncoiling of the steel coil is completed, the two ends of the locking block 11 are respectively inserted into the device housing 2 and the turntable 9. Then, the electromagnet 8 is turned off, and the return spring 6 drives the connecting shaft 5 to reset. The reset of the connecting shaft 5 drives the end face gear 12 to engage with the longitudinal gear 13. At this time, pressing the pressing cap 25 drives the pressing rod 192 to press down, causing the ratchet teeth 193 to separate from the ratchet wheel 191 and starting the servo motor 1 to reverse. The reverse rotation of the servo motor 1 drives the tensioning structure 3 and the pressing structure 18 to reset. After the tensioning structure 3 and the pressing structure 18 are reset, release the pressing cap 25. The pressing spring 194 drives the pressing rod 192 to reset. The reset of the pressing rod 192 drives the ratchet teeth 193 to engage with the ratchet wheel 191 again, thereby causing the entire device to return to the initial state and waiting for the next use.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel coil feeding and unwinding device, characterized in that, It includes a servo motor (1), a device housing (2), a tensioning structure (3), a connecting disc (4), a connecting shaft (5), a return spring (6), an armature (7), an electromagnet (8), a turntable (9), positioning holes (10), a locking block (11), an end face gear (12), a longitudinal gear (13), a rotating shaft (14), a first bevel gear (15), a second bevel gear (16), a rotating shaft (17), a pressing structure (18), and a limiting structure (19). The servo motor (1) is fixedly installed inside the device housing (2). The tensioning structure (3) is installed at the end of the output end of the servo motor (1). The connecting disc (4) is fixedly installed at the middle position of the output end of the servo motor (1). Four connecting shafts (5) are slidably installed on the connecting disc (4). The return spring (6) is located inside the connecting disc (4) and one end is fixedly installed on the connecting disc (4). The other end of the return spring (6) is fixedly installed on the connecting shaft (5). The armature (7) is fixedly installed on the connecting shaft (5). The electromagnet (8) is fixedly installed inside the connecting disc (4) and its position is axially aligned with that of the armature (7). A number of positioning holes (10) are provided on the turntable (9). The positioning holes (10) are equidistantly distributed on the turntable (9) with the center of the turntable (9) as the center of the circle and are axially in the same position as the connecting shafts (5). The turntable (9) is rotatably installed on the device housing (2). The pressing structure (18) is installed on the outside of the turntable (9). One end of the locking block (11) is inserted into the device housing (2), and the other end of the locking block (11) is inserted into the turntable (9). Four connecting shafts (5) are respectively fixedly installed on the end face gear (12). The end face gear (12) is meshed and connected with the longitudinal gear (13). One end of the rotating shaft (14) is rotatably installed inside the device housing (2), and the other end of the rotating shaft (14) is fixedly installed on the longitudinal gear (13). The first bevel gear (15) is fixedly installed at the middle position of the rotating shaft (14). The first bevel gear (15) is meshed and connected with the second bevel gear (16). The second bevel gear (16) is fixedly installed on the rotating shaft (17). The rotating shaft (17) is rotatably installed on the device housing (2). The pressing structure (18) is installed at the end of the rotating shaft (17). The limiting structure (19) is installed on the device housing (2) and the rotating shaft (17).

2. The uncoiling device for steel coil feeding according to claim 1, characterized in that, The tensioning structure (3) includes a central shaft (301), an arc-shaped block (302), a sliding rod (303), a support plate (304), and a fixed cylinder (305). The central shaft (301) is fixedly installed on the output end of the servo motor (1). There are eight arc-shaped blocks (302), and every four arc-shaped blocks (302) form a group. Each group of arc-shaped blocks (302) is fixedly installed on the central shaft (301) at equal intervals. One end of the sliding rod (303) is slidably installed on the arc-shaped block (302), and the other end of the sliding rod (303) is fixedly installed on the support plate (304). The middle part of the sliding rod (303) is slidably installed on the fixed cylinder (305), and the fixed cylinder (305) is fixedly installed on the turntable (9).

3. A steel coil feeding and unwinding device according to claim 1, characterized in that, The pressing structure (18) includes a spring box (181), a pressing plate (182), and a roller (183). The spring box (181) is fixedly installed on the rotating shaft (17). One end of the pressing plate (182) is fixedly installed on the output shaft of the spring box (181). The roller (183) is rotatably installed at the other end of the pressing plate (182).

4. A steel coil feeding and unwinding device according to claim 1, characterized in that, The limiting structure (19) includes a ratchet wheel (191), a pressing rod (192), ratchet teeth (193), and a pressing spring (194). The ratchet wheel (191) is fixedly installed on the rotating shaft (17). The pressing rod (192) is slidably installed on the device housing (2). The ratchet teeth (193) are fixedly installed at one end of the pressing rod (192). The ratchet teeth (193) are engaged with the ratchet wheel (191). The pressing spring (194) is sleeved on the pressing rod (192) and one end is fixedly installed on the device housing (2), and the other end of the pressing spring (194) is fixedly installed on the ratchet teeth (193).

5. A steel coil feeding and unwinding device according to claim 1, characterized in that, An installation base (20) is provided on the device housing (2), and the installation base (20) is fixedly installed below the device housing (2).

6. The uncoiling device for steel coil feeding according to claim 2, characterized in that, A guide groove (21) is provided on the turntable (9), the guide groove (21) is formed on the turntable (9). A guide block (26) is provided on the support plate (304), and the guide block (26) is fixedly installed on the support plate (304) and is slidably connected with the guide groove (21).

7. A steel coil feeding and uncoiling device according to claim 2, characterized in that, A threaded layer (22) is provided at the end of the central shaft (301), the threaded layer (22) is formed at the end of the central shaft (301). A sleeve (23) is provided on the threaded layer (22), and the sleeve (23) is threadedly engaged with the threaded layer (22). A baffle (27) is provided on the sleeve (23), and the baffle (27) is fixedly installed on the sleeve (23).

8. The uncoiling device for steel coil feeding according to claim 3, characterized in that, A rubber pad (24) is provided on the roller (183), and the rubber pad (24) is fixedly installed on the roller (183).

9. A steel coil feeding and unwinding device according to claim 4, characterized in that, A pressing cap (25) is provided on the pressing rod (192), and the pressing cap (25) is fixedly installed on the pressing rod (192).

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