Steel coil feeding and unwinding device and method

Abstract

The present invention discloses a steel coil feeding and unwinding device and method, and relates to the field of steel coil conveying equipment. In the present invention, when the steel coil processing equipment needs to process the steel coil and the pulling equipment stops pulling the steel coil, the unwinding roller drives the steel coil to continue unwinding, and at this time, the second tensioning roller moves downward along the support plate to abut and tighten the steel coil, so that the steel coil is always in a tensioned state, and at the same time, the lifting drive component drives the worm downward to separate from the worm wheel, so that when the worm rotates, it no longer drives the worm wheel and the unwinding roller to rotate, so that the unwinding roller stops unwinding; through the cooperation of the second tensioning roller, the lifting drive component, the worm and the worm wheel, the steel coil can always maintain a tensioned state in the gap where the unwinding is stopped for processing, so as to facilitate the processing equipment to process the steel coil, and at the same time, because the rotary drive component is disconnected from the unwinding roller, it is not necessary to stop the motor in the rotary drive component, so as to prevent the motor from overheating, current shock, wear and other problems caused by frequent start and stop of the motor.

Description

Technical Field

[0001] The present invention belongs to the field of steel coil conveying equipment, and in particular, relates to a steel coil feeding and unwinding device and method. Background Art

[0002] Steel coil, also known as coil steel. Steel is hot-pressed or cold-pressed into a coil. In order to facilitate storage and transportation, and to facilitate various processing (such as processing into steel plates, steel strips, etc.), the steel coil needs to be moved through the steel coil processing equipment by a pulling device during the subsequent processing, and the steel coil is unwound synchronously by the feeding and unwinding equipment, so that the steel coil can be continuously transported through the processing equipment, and then processed by the processing equipment.

[0003] In the prior art, when processing steel coils (such as punching and shearing), it is usually necessary to suspend the pulling and unwinding process of the steel coils and keep the steel coils in a tensioned state to facilitate the processing of the steel coils. After the processing is completed, the steel coils are conveyed and unwound again, and the conveying and processing of the steel coils are continued in this reciprocating manner. At present, most feeding and unwinding devices use motors to drive the steel coils to rotate and unwind. Therefore, during the conveying, unwinding and processing of the steel coils, the motors need to be frequently started and stopped. Frequent starting and stopping of the motors will cause problems such as motor overheating, current shock, and wear, which will greatly reduce the service life of the motors. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes a steel coil feeding and unwinding device and method to overcome the above-mentioned technical problems existing in the existing related art.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a steel coil feeding and unwinding device, comprising a machine base, an unwinding mechanism is installed on the upper end of the machine base, the unwinding mechanism comprises an unwinding roller and a rotating drive component, the unwinding roller is rotatably installed on one side of the upper end of the machine base, the rotating drive component is transmission-installed on one end of the unwinding roller, and is used to drive the unwinding roller and the steel coil to rotate and unwind;

[0007] A tensioning mechanism for tensioning and limiting the unwinding steel coil is also installed on one side of the machine base, and the tensioning mechanism includes a support plate, a tensioning roller 1 is rotatably installed on the outer side of the support plate, and a lifting tensioning roller 2 is installed on the inner side of the support plate. The tensioning roller 2 can move up and down under the tension of the steel coil, so that the steel coil is always kept in a tensioned state;

[0008] An unwinding control mechanism is installed inside the machine base, which is transmission-connected between the rotary drive assembly and the unwinding roller. The unwinding control mechanism includes a worm wheel, a worm and a lifting drive assembly. The worm wheel transmission is installed at one end of the unwinding roller, and the worm transmission is installed on the rotary drive assembly. The lifting drive assembly can drive the worm to move up and down, so that the lifting drive assembly can drive the worm upward to engage with the worm wheel when the steel coil is pulled and tensioned, and can also drive the worm downward to separate from the worm wheel when the steel coil stops pulling.

[0009] Furthermore, a track is fixedly installed on one side of the machine base, and a hydraulic lift is arranged on the track;

[0010] The outer ring of the unwinding roller is equipped with a hydraulic tensioning shaft.

[0011] Furthermore, the rotary drive assembly includes a motor, a transmission shaft and a driven shaft, the motor is fixedly mounted on the top of the base, and a driving wheel is fixedly mounted on the output end of one side of the motor;

[0012] The transmission shaft and the driven shaft are both rotatably mounted on the side wall of the machine base, a driven wheel is fixedly mounted on the outer end of the transmission shaft, a driving gear is fixedly mounted on the inner end of the transmission shaft, the driving wheel and the driven wheel are connected via a belt transmission, a driven gear meshingly connected to the driving gear is fixedly mounted on the driven shaft, and one end of the driven shaft is connected to a worm transmission.

[0013] Furthermore, a guide groove is provided on the support plate, a lifting slide is slidably installed inside the guide groove, one end of the tensioning roller 2 is rotatably installed on one side of the lifting slide, and a pressure spring is abutted against the top end of the lifting slide.

[0014] Furthermore, the lifting drive assembly includes an adjusting bracket, a supporting frame and a connecting shaft, the connecting shaft and the supporting frame are both fixedly mounted on the inner wall of the machine base, one end of the adjusting bracket is rotatably mounted between the connecting shaft and the driven shaft, the other end of the adjusting bracket is overlapped on the top of the supporting frame, the outer ring of the connecting shaft is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the inner wall of the machine base, and the other end of the torsion spring is fixedly connected to the adjusting bracket;

[0015] A lifting seat is fixedly installed in the middle of one end of the adjustment bracket, one end of the worm is rotatably installed on one side of the lifting seat, the other end of the worm is fixedly installed with a driven bevel gear, and the end of the driven shaft is fixedly installed with a transmission bevel gear meshing and transmission connected with the driven bevel gear.

[0016] Furthermore, a guide slot is provided on the top surface of the support frame and is located below the lifting seat, a translation wedge block is slidably installed in the guide slot, a lifting wedge block that can slide and abut against the translation wedge block is fixedly installed on the bottom surface of the lifting seat, a push-pull rod is fixedly installed on one end of the translation wedge block, and a limit frame that slidably supports the push-pull rod is fixedly installed on the inner wall of the machine base.

[0017] Furthermore, the lifting drive assembly also includes a rack and a rotating shaft, the rack is fixedly mounted on the outer end of the lifting slide, the rotating shaft is rotatably mounted on the outer wall of the machine base, one end of the rotating shaft is fixedly mounted with a transmission gear meshing with the rack, the other end of the rotating shaft is fixedly mounted with a cam, the raised end of the cam is rotatably mounted with a connecting rod, and one end of the connecting rod is rotatably connected to the outer end of the push-pull rod.

[0018] Furthermore, a connecting seat is fixedly installed on the top surface of one side of the adjustment bracket, a friction strip located on the outer circle of the top surface of the unwinding roller is fixedly installed on the top of the connecting seat, and a friction wheel located below the friction strip is fixedly installed on the unwinding roller.

[0019] Furthermore, the worm wheel is rotatably mounted on the unwinding roller, and a buffer disk fixedly mounted on the unwinding roller is provided on one side of the worm wheel, and a plurality of grooves connected to the back side of the worm wheel are opened on the buffer disk, and a buffer baffle extending into the groove is fixedly mounted on the back side of the worm wheel, and a buffer spring is installed in the groove to abut between the buffer disk and the buffer baffle.

[0020] The present invention also discloses a steel coil feeding and unwinding method, the specific steps of which are as follows:

[0021] First, one end of the steel coil installed on the unwinding roller passes through the tensioning roller 2, the tensioning roller 1 and the steel coil processing equipment, and then the end of the steel coil is connected to the pulling equipment. When the steel coil is processed, the steel coil is pulled by the pulling equipment, and at the same time, the rotating drive assembly drives the unwinding roller and the steel coil to rotate through the transmission of the worm and the worm gear to gradually unwind the steel coil, so that the steel coil is tensioned under the action of the pulling equipment and the unwinding and gradually moves through the steel coil processing equipment;

[0022] When the steel coil processing equipment needs to process the steel coil and the pulling equipment stops pulling the steel coil, the unwinding roller drives the steel coil to continue unwinding. At this time, the tensioning roller 2 moves downward along the support plate to abut and tighten the steel coil, so that the steel coil is always in a tensioned state. At the same time, the lifting drive assembly drives the worm downward to separate from the worm wheel, so that when the worm rotates, it no longer drives the worm wheel and the unwinding roller to rotate, so that the unwinding roller stops unwinding;

[0023] When the steel coil processing is completed and the pulling equipment continues to pull the steel coil to move for the next round of steel coil processing, the tensioning roller 2 is reset upward under the support of the taut steel coil, and at the same time, the drive assembly drives the worm upward to engage with the worm gear for transmission, so that the rotary drive assembly can continue to drive the unwinding roller and the steel coil to rotate, so that the steel coil continues to be transported and unwound.

[0024] The present invention has the following beneficial effects:

[0025] 1. In the present invention, when the steel coil processing equipment needs to process the steel coil and the pulling equipment stops pulling the steel coil, the unwinding roller drives the steel coil to continue unwinding. At this time, the tensioning roller two moves downward along the support plate to abut and tighten the steel coil, so that the steel coil is always in a tensioned state. At the same time, the lifting drive assembly drives the worm downward and separates from the worm wheel, so that when the worm rotates, it no longer drives the worm wheel and the unwinding roller to rotate, so that the unwinding roller stops unwinding. Through the cooperation of the tensioning roller two, the lifting drive assembly, the worm and the worm wheel, the steel coil can always be kept in a tensioned state in the gap when the unwinding is stopped for processing, so as to facilitate the processing equipment to process the steel coil. At the same time, since the rotating drive assembly is disconnected from the unwinding roller, there is no need to shut down the motor in the rotating drive assembly, so as to prevent the motor from overheating, current shock, wear and other problems caused by frequent start and stop, which is beneficial to increase the service life of the motor.

[0026] 2. In the present invention, when the lifting drive assembly drives the worm downward and separates from the worm wheel, it can drive the friction strip to move downward synchronously, so that the friction strip abuts against the friction wheel at the end of the unwinding roller, thereby locking the unwinding roller through the friction resistance between the friction strip and the friction wheel, preventing the unwinding roller from driving the steel coil to continue to rotate and unwind under the action of rotational inertia, thereby ensuring that the steel coil is in a tensioned state during processing; at the same time, since the unwinding roller is in a locked state, when the subsequent steel coil processing is completed and the pulling equipment continues to pull the steel coil for movement and transportation, the steel coil can be tightened first, so that the tightened steel coil pushes the tensioning roller two upward to move and restore to the initial state, and at the same time, the lifting drive assembly is driven by the upward tensioning roller two, drives the worm upward to engage with the worm wheel for transmission connection, so as to continue to drive the unwinding roller to rotate and unwind, thereby through the locking cooperation of the friction strip and the friction wheel, it can be ensured that the steel coil automatically restores the unwinding state when being pulled.

[0027] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0029] Figure 1 This is one of the three-dimensional structural schematic diagrams of the unwinding device of the present invention;

[0030] Figure 2 This is the second schematic diagram of the three-dimensional structure of the unwinding device of the present invention;

[0031] Figure 3 For the present invention Figure 2 A local enlarged structural schematic diagram;

[0032] Figure 4 For the present invention Figure 2 A schematic diagram of the local enlarged structure at B;

[0033] Figure 5 The third schematic diagram of the three-dimensional structure of the unwinding device of the present invention;

[0034] Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C;

[0035] Figure 7 This is the fourth schematic diagram of the three-dimensional structure of the unwinding device of the present invention;

[0036] Figure 8 For the present invention Figure 7 A schematic diagram of the local enlarged structure at D;

[0037] Fig. 9 The fifth schematic diagram of the three-dimensional structure of the unwinding device of the present invention;

[0038] Fig.10 For the present invention Fig. 9 Schematic diagram of the local enlarged structure at E.

[0039] In the figure: 1, machine base; 2, track; 3, hydraulic lifting vehicle; 4, unwinding mechanism; 41, unwinding roller; 42, motor; 43, driving wheel; 44, driving gear; 45, belt; 46, transmission shaft; 47, driven wheel; 48, driven shaft; 49, driven gear; 410, hydraulic tensioning shaft; 5, unwinding control mechanism; 51, worm wheel; 52, worm; 53, lifting seat; 54, adjustment bracket; 55, support frame; 56, push-pull rod; 57, rack; 58, transmission gear; 59, rotating shaft; 510, cam; 511. connecting rod; 512. limiting frame; 513. translation wedge block; 514. lifting wedge block; 515. connecting seat; 516. friction strip; 517. friction wheel; 518. driving bevel gear; 519. driven bevel gear; 520. connecting shaft; 521. torsion spring; 522. buffer disk; 523. groove; 524. buffer spring; 525. buffer baffle; 6. tensioning mechanism; 61. tensioning roller one; 62. tensioning roller two; 63. support plate; 64. guide groove; 65. pressure spring; 66. lifting slide. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0041] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0042] Embodiment 1

[0043] See also Figure 1-Figure 3 As shown, the present invention is a steel coil feeding and unwinding device, comprising a machine base 1, an unwinding mechanism 4 is installed on the upper end of the machine base 1, the unwinding mechanism 4 comprises an unwinding roller 41 and a rotary drive component, the unwinding roller 41 is rotatably installed on one side of the upper end of the machine base 1, the rotary drive component is transmission-installed on one end of the unwinding roller 41, and is used to drive the unwinding roller 41 and the steel coil to rotate and unwind; one side of the machine base 1 is also installed with a tensioning mechanism 6 for tensioning and limiting the steel coil being unwound, the tensioning mechanism 6 comprises a support plate 63, a tensioning roller 1 61 is rotatably installed on the outer side of the support plate 63, a lifting tensioning roller 2 62 is installed on the inner side of the support plate 63, the The tensioning roller 2 62 can be lifted and moved under the tension of the steel coil, so that the steel coil is always kept in a tensioned state; the inside of the machine base 1 is equipped with an unwinding control mechanism 5 which is transmission-connected between the rotary drive assembly and the unwinding roller 41, and the unwinding control mechanism 5 includes a worm wheel 51, a worm 52 and a lifting drive assembly, wherein the worm wheel 51 is transmission-mounted on one end of the unwinding roller 41, and the worm 52 is transmission-mounted on the rotary drive assembly, and the lifting drive assembly can drive the worm 52 to lift and move, so that the lifting drive assembly can drive the worm 52 upward to mesh with the worm wheel 51 when the steel coil is pulled and tensioned, and can also drive the worm 52 downward to separate from the worm wheel 51 when the steel coil stops pulling;

[0044] Specifically, when the steel coil feeding and unwinding device is working, first, one end of the steel coil installed on the unwinding roller 41 passes through the tensioning roller 2 62, the tensioning roller 1 61 and the steel coil processing equipment, and then the end of the steel coil is connected to the pulling equipment. When the steel coil is processed, the steel coil is pulled by the pulling equipment, and at the same time, the rotation drive component drives the unwinding roller 41 and the steel coil to rotate through the transmission of the worm 52 and the worm wheel 51 to gradually unwind the steel coil, so that the steel coil is tensioned under the action of the pulling equipment and unwinding and gradually moves through the steel coil processing equipment; when the steel coil processing equipment needs to process the steel coil and the pulling equipment stops pulling the steel coil, the unwinding roller 41 drives the steel coil to continue unwinding. The tensioning roller 62 moves downward along the support plate 63 to tighten the steel coil, so that the steel coil is always in a tensioned state. At the same time, the lifting drive assembly drives the worm 52 downward to separate from the worm wheel 51, so that when the worm 52 rotates, it no longer drives the worm wheel 51 and the unwinding roller 41 to rotate, so that the unwinding roller 41 stops unwinding; and when the steel coil processing is completed, the pulling device continues to pull the steel coil to move for the next round of steel coil processing, the tensioning roller 62 moves upward to reset under the support of the tightened steel coil, and at the same time, the driving assembly drives the worm 52 upward to mesh with the worm wheel 51 for transmission connection, so that the rotary drive assembly can continue to drive the unwinding roller 41 and the steel coil to rotate, so that the steel coil continues to be transported and unwound;

[0045] The coordination of the tensioning roller 62, the lifting drive assembly, the worm 52 and the worm wheel 51 can keep the steel coil in a tensioned state during the gap when unwinding is stopped for processing, so as to facilitate the processing of the steel coil by the processing equipment. At the same time, since the rotary drive assembly is disconnected from the unwinding roller 41, there is no need to shut down the rotary drive assembly when the unwinding is stopped, thereby preventing the rotary drive assembly from being damaged due to frequent starting and stopping, which is beneficial to increasing the service life of the rotary drive assembly.

[0046] Embodiment 2

[0047] See also Figure 1-Figure 3 , Figure 7-Figure 9 As shown, the difference between this embodiment and the above-mentioned embodiment lies in that a track 2 is fixedly installed on one side of the machine base 1, and a hydraulic lifting vehicle 3 is arranged on the track 2; a hydraulic tensioning shaft 410 is installed on the outer ring of the unwinding roller 41; the rotary drive assembly comprises a motor 42, a transmission shaft 46 and a driven shaft 48, the motor 42 is fixedly installed on the top of the machine base 1, and a driving wheel 43 is fixedly installed on the output end of one side of the motor 42; the transmission shaft 46 and the driven shaft 48 are both rotatably installed on the side wall of the machine base 1, a driven wheel 47 is fixedly installed on the outer end of the transmission shaft 46, and a driving gear 44 is fixedly installed on the inner end of the transmission shaft 46, and the driving wheel 43 and the driven wheel 47 are connected by a belt 45, and a driven gear 49 meshing and connected to the driving gear 44 is fixedly installed on the driven shaft 48, and one end of the driven shaft 48 is connected by a worm 52;

[0048] When the unwinding device is working, the steel coil can be placed on the top of the hydraulic lifting vehicle 3 through a suspension device or a forklift, and then the height of the steel coil can be adjusted by the hydraulic lifting vehicle 3 so that the central through hole of the steel coil is facing the unwinding roller 41. At the same time, the hydraulic lifting vehicle 3 is driven to move along the track 2 toward the machine base 1 to transport the steel coil toward the unwinding roller 41 so that the steel coil is inserted into the surface of the unwinding roller 41. Then, the inner support of the steel coil is locked on the unwinding roller 41 through the hydraulic tensioning shaft 410. Through the cooperation of the hydraulic lifting vehicle 3 and the track 2, the steel coil can be quickly installed on the unwinding roller 41, making the installation of the steel coil more convenient and labor-saving.

[0049] When unwinding, the driving wheel 43 is driven to rotate by the motor 42, and the driving wheel 43 drives the driven wheel 47, the transmission shaft 46 and the driving gear 44 to rotate through the transmission of the belt 45, and the driving gear 44 meshes to drive the driven gear 49 to rotate, so as to drive the driven shaft 48 to rotate, and finally the driven shaft 48 drives the unwinding roller 41 to rotate and unwind through the meshing transmission of the worm 52 and the worm wheel 51; wherein the driving wheel 43 and the driven wheel 47 as well as the driving gear 44 and the driven gear 49 are all reduced speed transmissions, so that the rotation speeds of the driven shaft 48 and the worm 52 are reduced through the secondary reduction transmission, so as to reduce the friction force when the worm 52 and the worm wheel 51 are opened and closed, and prevent the worm 52 and the worm wheel 51 from being damaged by friction.

[0050] Embodiment 3

[0051] See also Figure 2 , Figure 3 As shown, the difference between this embodiment and the above embodiment is that a guide groove 64 is provided on the support plate 63, a lifting slide 66 is slidably installed inside the guide groove 64, one end of the tensioning roller 2 62 is rotatably installed on one side of the lifting slide 66, and a pressure spring 65 is installed against the top end of the lifting slide 66;

[0052] When the steel coil is being conveyed and unwound, the tensioning roller 2 62 moves upward under the support of the taut steel coil, and drives the lifting slide 66 to move upward synchronously. At the same time, the lifting slide 66 abuts and contracts the pressure spring 65. When the steel coil stops being conveyed, as the unwinding roller 41 rotates and unwinds, the steel coil has a loosening tendency. At this time, the tensioning roller 2 62 moves downward under the action of its own weight and the elastic force of the pressure spring 65, abuts and tensions the steel coil, so that the steel coil remains in a tensioned state.

[0053] Embodiment 4

[0054] See also Figure 1-Figure 10As shown, the difference between this embodiment and the above embodiment is that the lifting drive assembly includes an adjusting bracket 54, a supporting frame 55 and a connecting shaft 520, the connecting shaft 520 and the supporting frame 55 are both fixedly mounted on the inner wall of the machine base 1, one end of the adjusting bracket 54 is rotatably mounted between the connecting shaft 520 and the driven shaft 48, the other end of the adjusting bracket 54 is overlapped on the top of the supporting frame 55, the outer ring of the connecting shaft 520 is sleeved with a torsion spring 521, one end of the torsion spring 521 is fixedly connected to the inner wall of the machine base 1, and the other end of the torsion spring 521 is fixedly connected to the adjusting bracket 54; a lifting seat 53 is fixedly mounted in the middle of one end of the adjusting bracket 54, one end of the worm 52 is rotatably mounted on one side of the lifting seat 53, the other end of the worm 52 is fixedly mounted with a driven bevel gear 519, and the end of the driven shaft 48 is fixedly mounted with a transmission bevel gear 518 meshing and transmission-connected with the driven bevel gear 519;

[0055] The top surface of the support frame 55 is provided with a guide slot located below the lifting seat 53, in which a translation wedge block 513 is slidably installed, and a lifting wedge block 514 that can slide and abut against the translation wedge block 513 is fixedly installed on the bottom surface of the lifting seat 53, and a push-pull rod 56 is fixedly installed on one end of the translation wedge block 513, and a limit frame 512 that supports the sliding support of the push-pull rod 56 is fixedly installed on the inner wall of the machine base 1; the lifting drive assembly also includes a rack 57 and a rotating shaft 59, the rack 57 is fixedly installed on the outer end of the lifting slide 66, and the rotating shaft 59 is rotatably installed on the outer wall of the machine base 1, and a transmission gear 58 meshing and transmission-connected with the rack 57 is fixedly installed on one end of the rotating shaft 59, and a cam 510 is fixedly installed on the other end of the rotating shaft 59, and a connecting rod 511 is rotatably installed on the raised end of the cam 510, and one end of the connecting rod 511 is rotatably connected to the outer end of the push-pull rod 56;

[0056] When the steel coil is conveyed and unwound, the translation wedge block 513 is supported on the bottom surface of the lifting wedge block 514. At this time, the adjustment bracket 54 is in a high position, and the worm 52 is meshed with the worm wheel 51 to drive the unwinding roller 41 to rotate and unwind. When the steel coil stops conveying and the tensioning roller 2 62 moves downward, the tensioning roller 2 62 drives the rack 57 to move downward synchronously. At this time, the rack 57 meshes and drives the transmission gear 58 to rotate, and the transmission gear 58 drives the rotating shaft 59 and the cam 510 to rotate. When the cam 510 rotates, the push-pull rod 56 is pulled outward through the connecting rod 511, so that the push-pull rod 56 pulls the translation wedge block 513 out of the guide slot and staggers with the lifting wedge block 514. At this time, the adjustment bracket 54 rotates downward with the connecting shaft 520 as the fulcrum under the torsional elastic force of the torsion spring 521, thereby driving the worm 52 to rotate and move downward, so that the worm 52 is disconnected from the worm wheel 51, and no longer drives the unwinding roller 41 to rotate and unwind.

[0057] When the steel coil continues to be conveyed and the tensioning roller 2 62 moves upward to reset, the tensioning roller 2 62 drives the rack 57 to move upward to reset synchronously. At this time, the rack 57 engages to drive the transmission gear 58 to rotate in the opposite direction, and the transmission gear 58 drives the rotating shaft 59 and the cam 510 to rotate in the opposite direction. When the cam 510 rotates in the opposite direction, the push-pull rod 56 is pushed inward through the connecting rod 511, so that the push-pull rod 56 pushes the translation wedge block 513 into the guide groove, and the translation wedge block 513 pushes the lifting wedge block 514 upward to move. At this time, the adjusting bracket 54 rotates upward and resets with the connecting shaft 520 as the fulcrum, thereby driving the worm 52 to rotate upward, so that the worm 52 and the worm wheel 51 resume meshing connection, so as to drive the unwinding roller 41 to rotate and unwind again.

[0058] Furthermore, a connecting seat 515 is fixedly installed on the top surface of one side of the adjusting bracket 54, and a friction strip 516 located on the outer ring of the top surface of the unwinding roller 41 is fixedly installed on the top of the connecting seat 515, and a friction wheel 517 located below the friction strip 516 is fixedly installed on the unwinding roller 41; wherein, the inner ring of the friction strip 516 and the outer ring of the friction wheel 517 are both provided with friction patterns, and when the adjusting bracket 54 is in a high position and the unwinding roller 41 rotates to unwind, the friction strip 516 and the friction wheel 517 are in a separated state, and when the adjusting bracket 54 moves downward to disconnect the transmission connection with the unwinding roller 41, the adjusting bracket 54 drives the friction strip 516 to move downward synchronously, so that the friction strip 516 abuts against the outer ring of the friction wheel 517, so as to achieve the effect of friction between the friction strip 516 and the friction wheel 517. The friction between the wheels 517 locks the unwinding roller 41 to prevent the unwinding roller 41 from driving the steel coil to continue rotating and unwinding under the action of rotational inertia, thereby ensuring that the steel coil is in a tensioned state during processing; at the same time, since the unwinding roller 41 is in a locked state, the subsequent steel coil processing is completed. When the pulling equipment continues to pull the steel coil for movement and transportation, the steel coil can be tightened first, so that the tightened steel coil pushes the tensioning roller 2 62 upward and moves it back to its initial state. At the same time, the lifting drive assembly, driven by the upward tensioning roller 2 62, drives the worm 52 upward to engage with the worm wheel 51 for transmission connection, so as to continue to drive the unwinding roller 41 to rotate and unwind, thereby ensuring that the steel coil automatically returns to the unwinding state when being pulled through the locking cooperation of the friction strip 516 and the friction wheel 517.

[0059] Furthermore, the worm gear 51 is rotatably mounted on the unwinding roller 41, and a buffer disk 522 fixedly mounted on the unwinding roller 41 is provided on one side of the worm gear 51, and a plurality of grooves 523 connected to the back side of the worm gear 51 are formed on the buffer disk 522, and a buffer baffle 525 extending into the groove 523 is fixedly mounted on the back side of the worm gear 51, and a buffer spring 524 abutting between the buffer disk 522 and the buffer baffle 525 is installed in the groove 523; when the worm wheel 51 resumes the meshing transmission connection with the worm 52, so that the worm 52 drives the worm wheel 51 to rotate, the worm wheel 51 can drive the buffer disk 522 and the unwinding roller 41 to rotate after being buffered by the expansion and contraction of the buffer spring 524, and by buffering the worm 52 and the worm wheel 51 during meshing, the friction between the worm 52 and the worm wheel 51 can be reduced, thereby preventing the worm 52 and the worm wheel 51 from being damaged by friction.

[0060] Embodiment 5

[0061] See also Figure 1-Figure 10 As shown, this embodiment also discloses a steel coil feeding and unwinding method, and the specific steps are as follows:

[0062] First, one end of the steel coil installed on the unwinding roller 41 passes through the tensioning roller 2 62, the tensioning roller 1 61 and the steel coil processing equipment, and then the end of the steel coil is connected to the pulling equipment. When the steel coil is processed, the steel coil is pulled by the pulling equipment, and at the same time, the rotation drive assembly drives the unwinding roller 41 and the steel coil to rotate through the transmission of the worm 52 and the worm wheel 51 to gradually unwind the steel coil, so that the steel coil is tensioned under the action of the pulling equipment and the unwinding and gradually moves through the steel coil processing equipment;

[0063] When the steel coil processing equipment needs to process the steel coil and the pulling equipment stops pulling the steel coil, the unwinding roller 41 drives the steel coil to continue unwinding. At this time, the tensioning roller 62 moves downward along the support plate 63 to abut and tighten the steel coil, so that the steel coil is always in a tensioned state. At the same time, the lifting drive assembly drives the worm 52 downward to separate from the worm wheel 51, so that when the worm 52 rotates, it no longer drives the worm wheel 51 and the unwinding roller 41 to rotate, so that the unwinding roller 41 stops unwinding;

[0064] When the steel coil processing is completed and the pulling equipment continues to pull the steel coil to move for the next round of steel coil processing, the tensioning roller 62 is reset upward under the support of the taut steel coil, and at the same time, the drive assembly drives the worm 52 upward to engage with the worm gear 51 for transmission connection, so that the rotary drive assembly can continue to drive the unwinding roller 41 and the steel coil to rotate, so that the steel coil continues to be transported and unwound.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. A steel coil feeding and unwinding device, comprising a machine base, characterized in that: An unwinding mechanism is installed at the upper end of the machine base, and the unwinding mechanism includes an unwinding roller and a rotation drive component. The unwinding roller is rotatably installed on one side of the upper end of the machine base, and the rotation drive component is transmission-installed on one end of the unwinding roller, and is used to drive the unwinding roller and the steel coil to rotate and unwind; A tensioning mechanism for tensioning and limiting the unwinding steel coil is also installed on one side of the machine base, and the tensioning mechanism includes a support plate, a tensioning roller 1 is rotatably installed on the outer side of the support plate, and a lifting tensioning roller 2 is installed on the inner side of the support plate. The tensioning roller 2 can move up and down under the tension of the steel coil, so that the steel coil is always kept in a tensioned state; An unwinding control mechanism that is transmission-connected between the rotary drive assembly and the unwinding roller is installed inside the machine base, and the unwinding control mechanism includes a worm wheel, a worm and a lifting drive assembly. The worm wheel transmission is installed at one end of the unwinding roller, and the worm transmission is installed on the rotary drive assembly. The lifting drive assembly can drive the worm to move up and down, so that the lifting drive assembly can drive the worm upward to mesh with the worm wheel when the steel coil is pulled and tensioned, and can also drive the worm downward to separate from the worm wheel when the steel coil stops pulling; The rotary drive assembly includes a motor, a transmission shaft and a driven shaft. The motor is fixedly mounted on the top of the base, and a driving wheel is fixedly mounted on the output end of one side of the motor. The transmission shaft and the driven shaft are both rotatably mounted on the side wall of the machine base, a driven wheel is fixedly mounted on the outer end of the transmission shaft, a driving gear is fixedly mounted on the inner end of the transmission shaft, the driving wheel and the driven wheel are connected via a belt transmission, a driven gear meshing with the driving gear is fixedly mounted on the driven shaft, and one end of the driven shaft is connected to the worm transmission; The support plate is provided with a guide groove, a lifting slide is slidably installed inside the guide groove, one end of the second tensioning roller is rotatably installed on one side of the lifting slide, and a pressure spring is abutted against the top end of the lifting slide; The lifting drive assembly comprises an adjusting bracket, a supporting frame and a connecting shaft, wherein the connecting shaft and the supporting frame are both fixedly mounted on the inner wall of the machine base, one end of the adjusting bracket is rotatably mounted between the connecting shaft and the driven shaft, the other end of the adjusting bracket is overlapped on the top of the supporting frame, the outer ring of the connecting shaft is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the inner wall of the machine base, and the other end of the torsion spring is fixedly connected to the adjusting bracket; A lifting seat is fixedly installed in the middle of one end of the adjusting bracket, one end of the worm is rotatably installed on one side of the lifting seat, a driven bevel gear is fixedly installed on the other end of the worm, and a transmission bevel gear meshingly connected with the driven bevel gear is fixedly installed on the end of the driven shaft; A connecting seat is fixedly installed on the top surface of one side of the adjusting bracket, a friction strip located on the outer ring of the top surface of the unwinding roller is fixedly installed on the top of the connecting seat, and a friction wheel located below the friction strip is fixedly installed on the unwinding roller.

2. The steel coil feeding and unwinding device according to claim 1, characterized in that: A track is fixedly installed on one side of the machine base, and a hydraulic lift is arranged on the track; The outer ring of the unwinding roller is equipped with a hydraulic tensioning shaft.

3. The steel coil feeding and unwinding device according to claim 1, characterized in that: The top surface of the support frame is provided with a guide slot located below the lifting seat, a translation wedge block is slidably installed in the guide slot, a lifting wedge block that can slide and abut against the translation wedge block is fixedly installed on the bottom surface of the lifting seat, a push-pull rod is fixedly installed at one end of the translation wedge block, and a limit frame that slidably supports the push-pull rod is fixedly installed on the inner wall of the machine base.

4. The steel coil feeding and unwinding device according to claim 3, characterized in that: The lifting drive assembly also includes a rack and a rotating shaft, the rack is fixedly mounted on the outer end of the lifting slide, the rotating shaft is rotatably mounted on the outer wall of the machine base, one end of the rotating shaft is fixedly mounted with a transmission gear meshing with the rack, the other end of the rotating shaft is fixedly mounted with a cam, the raised end of the cam is rotatably mounted with a connecting rod, and one end of the connecting rod is rotatably connected to the outer end of the push-pull rod.

5. The steel coil feeding and unwinding device according to claim 1, characterized in that: The worm wheel is rotatably mounted on the unwinding roller, a buffer disk fixedly mounted on the unwinding roller is provided on one side of the worm wheel, a plurality of grooves connected to the back side of the worm wheel are opened on the buffer disk, a buffer baffle extending into the groove is fixedly mounted on the back side of the worm wheel, a buffer spring abutting between the buffer disk and the buffer baffle is installed in the groove.

6. A method for feeding and unwinding a steel coil, using the steel coil feeding and unwinding device according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: First, one end of the steel coil installed on the unwinding roller passes through the tensioning roller 2, the tensioning roller 1 and the steel coil processing equipment, and then the end of the steel coil is connected to the pulling equipment. When the steel coil is processed, the steel coil is pulled by the pulling equipment, and at the same time, the rotating drive assembly drives the unwinding roller and the steel coil to rotate through the transmission of the worm and the worm gear to gradually unwind the steel coil, so that the steel coil is tensioned under the action of the pulling equipment and the unwinding and gradually moves through the steel coil processing equipment; When the steel coil processing equipment needs to process the steel coil and the pulling equipment stops pulling the steel coil, the unwinding roller drives the steel coil to continue unwinding. At this time, the tensioning roller 2 moves downward along the support plate to abut and tighten the steel coil, so that the steel coil is always in a tensioned state. At the same time, the lifting drive assembly drives the worm downward to separate from the worm wheel, so that when the worm rotates, it no longer drives the worm wheel and the unwinding roller to rotate, so that the unwinding roller stops unwinding; When the steel coil processing is completed and the pulling equipment continues to pull the steel coil to move for the next round of steel coil processing, the tensioning roller 2 is reset upward under the support of the taut steel coil, and at the same time, the drive assembly drives the worm upward to engage with the worm gear for transmission, so that the rotary drive assembly can continue to drive the unwinding roller and the steel coil to rotate, so that the steel coil continues to be transported and unwound.

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