Steel coil cutting equipment for automobile part machining

Abstract

The utility model discloses a steel coil cutting device for auto spare part processing, which comprises a flattening and cutting mechanism and a scrap collecting box installed in the flattening and cutting mechanism, a steel coil replacing mechanism is arranged on one side in the flattening and cutting mechanism, a steel coil roller is arranged in the middle of the steel coil replacing mechanism, and a scrap collecting box is arranged in the scrap collecting box. The flattening and cutting mechanism comprises a cutting workbench, first motor covers are symmetrically mounted at the bottom of the cutting workbench, flattening motors are symmetrically mounted in the first motor covers, output ends of the flattening motors are fixedly connected with first chain wheel transmission assemblies, and the output ends of the first chain wheel transmission assemblies are fixedly connected with second chain wheel transmission assemblies; first two-way threaded rods are symmetrically installed on the top of the first chain wheel transmission assembly, flattening threaded sleeves are symmetrically connected to the outer sides of the two first two-way threaded rods in a threaded mode, the flattening rollers move relatively, so that a steel coil needing to be cut off is flattened, meanwhile, the number of turns is measured through a mechanical turn number counter, and the number of turns of the steel coil needing to be cut off is measured. Therefore, the conveying length of the steel coil is controlled, and the steel coil is quantitatively cut off.

Description

Technical Field

[0001] The utility model relates to the technical field of steel coil cutting, in particular to a steel coil cutting device used for processing automobile parts. Background Art

[0002] Steel coil is also called coil steel. Steel is hot-pressed or cold-pressed into coils. The formed coils are mainly hot-rolled coils and cold-rolled coils. In order to facilitate storage and transportation, they are also convenient for various processing, such as processing into steel plates, steel strips, etc. Hot-rolled coils are processed products before the steel billet recrystallizes, and cold-rolled coils are the subsequent processing of hot-rolled coils. Steel coils usually need to undergo subsequent processing and are cut into different lengths according to different needs.

[0003] Announcement No. CN 212443513 U discloses a steel coil cutting device for automobile parts processing. The steel coil is driven to move by an electric push rod and an electromagnetic suction block to realize steel coil transportation. The cutting length can be controlled by the extension amount and extension times of the electric push rod. The size is more accurate. During the cutting process, clamping plates are provided on both sides of the cutting knife to fix it to avoid displacement of the steel coil. The cutting quality is stable. The existing steel coil cutting device has low cutting size accuracy, difficult to control cutting length, and easy displacement of the steel coil during cutting, resulting in skewed cutting seams and waste of steel coils. However, the patent still has the following problems in actual use:

[0004] Although the steel coil cutting device used for automobile parts processing is provided with clamping plates on both sides of the cutting knife to fix it and prevent the steel coil from shifting, and the cutting quality is stable, since the steel coil is wound on the material roller, it will be curled to a certain extent after being put down. If the steel coil cannot be leveled, the cut steel coil will be curled or warped, affecting the cutting length. At the same time, the cut steel coil will also be warped, and a leveling operation needs to be performed later, thereby increasing the workload of workers and raising production costs.

[0005] A steel coil cutting device for automobile parts processing is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a steel coil cutting device for automobile parts processing, so as to solve the problem that although the steel coil cutting device for automobile parts processing proposed in the above-mentioned background technology is provided with clamping plates on both sides of the cutting knife for fixing to prevent the steel coil from shifting and to ensure stable cutting quality, the steel coil is wound on a material roller and will curl to a certain extent after being put down. If the steel coil cannot be leveled, the cut steel coil will curl or warp, affecting the cutting length. At the same time, the cut steel coil will also warp, requiring a leveling operation at a later stage, thereby increasing the workload of workers and raising production costs.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel coil cutting device for automobile parts processing, comprising a flattening and cutting mechanism, and a debris collection box installed inside the flattening and cutting mechanism;

[0008] A steel coil replacement mechanism is provided on one side of the inner part of the flattening and cutting mechanism, and a steel coil roller is provided in the middle of the steel coil replacement mechanism;

[0009] Also includes:

[0010] The flattening and cutting mechanism comprises a cutting workbench, a first motor cover is symmetrically installed at the bottom of the cutting workbench, and a flattening motor is symmetrically installed inside the first motor cover;

[0011] Wherein, the output of the flattening motor is fixedly connected with a first sprocket transmission assembly, and a first bidirectional threaded rod is symmetrically installed on the top of the first sprocket transmission assembly;

[0012] The outer sides of the two first bidirectional threaded rods are symmetrically threadedly connected with flattened threaded sleeves, and a mechanical revolution counter is fixedly installed on the inner side of the flattened threaded sleeve on one side.

[0013] Preferably, a flattening roller is fixedly connected to the output end of the first rotating motor, and the flattening roller is rotatably connected to a mechanical turn counter. Lifting support columns are symmetrically installed in the middle of the cutting workbench, and a lifting top plate is fixedly installed on the top of two of the lifting support columns, and a lifting motor is fixedly installed on one side of the lifting top plate.

[0014] Preferably, the output end of the lifting motor is fixedly connected to a lifting rotating rod, bevel gear transmission assemblies are symmetrically installed at both ends of the lifting rotating rod, lifting threaded rods are symmetrically installed at the bottom of the two bevel gear transmission assemblies, the outer sides of the two lifting threaded rods are threadedly connected with lifting threaded sleeves, a truncation bracket is fixedly installed between the two lifting threaded sleeves, compression springs are fixedly installed around the bottom of the truncation bracket, and a compression plate is fixedly installed at the bottom of the compression spring.

[0015] Preferably, a translation motor is fixedly installed on one side of the top of the truncation bracket, and the output end of the translation motor is fixedly connected to a second sprocket transmission assembly, a truncated threaded rod is fixedly installed inside the second sprocket transmission assembly, the outer side of the truncated threaded rod is threadedly connected to a truncated threaded sleeve, a truncation limit plate is fixedly installed on the bottom of the truncation threaded sleeve, and the truncation limit plate is slidably connected to the truncation bracket.

[0016] Preferably, a cutting motor is fixedly installed at the bottom of the cutting limit plate, a cutting support plate is fixedly installed at the bottom of the cutting workbench near the cutting motor, the debris collection box is arranged at the bottom of the cutting support plate, and the debris collection box is slidably connected to the cutting workbench.

[0017] Preferably, the steel coil replacement mechanism includes a second motor cover, an opening and closing motor is fixedly installed on one side of the interior of the second motor cover, the output end of the opening and closing motor is fixedly connected to a third sprocket transmission assembly, one side of the third sprocket transmission assembly is symmetrically fixedly connected to an opening and closing bidirectional threaded rod, and both ends of the two opening and closing bidirectional threaded rods are symmetrically threadedly connected to opening and closing threaded sleeves.

[0018] Preferably, an opening and closing bracket is fixedly installed on the top of the opening and closing threaded sleeve on one side, a locking sleeve is fixedly installed on the inner sides of the two opening and closing brackets, a locking groove is provided inside the locking sleeve, a second rotating motor is fixedly installed on the outer side of the opening and closing bracket on one side, the output end of the second rotating motor is fixedly connected to the locking sleeve, locking blocks are symmetrically installed on both ends of the steel roll, and the steel roll is locked and connected with the locking sleeve through the locking blocks and the locking groove.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the steel coil cutting device for automobile parts processing utilizes the relative movement of the flattening roller to flatten the steel coil to be cut, and utilizes the mechanical circle counter to measure the number of circles, thereby controlling the conveying length of the steel coil and performing quantitative cutting of the steel coil. The installation and disassembly of the steel coil roller are realized by utilizing the characteristics of the clamping groove on the inner side of the clamping sleeve and the clamping blocks on both sides of the steel coil roller, and the second rotating motor is utilized to drive the clamping sleeve and the steel coil roller to rotate, thereby realizing quantitative cutting of the steel coil. The specific contents are as follows:

[0020] 1. By setting the flattening and cutting mechanism, not only can the flattening motor be used to drive the first sprocket transmission assembly and the first bidirectional threaded rod to rotate, so that the flattening thread sleeve drives the mechanical circle counter and the flattening roller to move relatively, so as to flatten the steel coil that needs to be cut, but also the first rotating motor is used to drive the flattening roller to rotate, and the upper and lower first rotating motors and the flattening roller rotate relatively, so as to realize the conveying function of the steel coil, and the mechanical circle counter is used to measure the number of circles, so as to control the conveying length of the steel coil and perform quantitative cutting of the steel coil, and the lifting motor is used to drive the lifting rotating rod and the bevel gear transmission assembly to rotate, so that the bevel gear transmission assembly drives the lifting thread rod to rotate, and at the same time, the lifting thread sleeve drives the cutting bracket, the clamping spring and the clamping plate to move up and down, and cooperates with the cutting support plate at the bottom to support the steel coil, and the translation motor is used to drive the second sprocket transmission assembly and the cutting thread rod to rotate, so that the cutting thread sleeve drives the cutting limit plate and the cutting motor to move horizontally, and the cutting motor is used to cut the steel coil, and the debris is collected through the debris collection box;

[0021] 2. By setting up the steel coil replacement mechanism, not only can the opening and closing motor be used to drive the third sprocket transmission assembly and the opening and closing bidirectional threaded rod to rotate, so that the opening and closing threaded sleeve drives the opening and closing bracket and the locking sleeve to move relative to each other, but also the locking groove on the inner side of the locking sleeve and the locking blocks on both sides of the steel coil roller are used to realize the installation and disassembly of the steel coil roller, and at the same time, the second rotating motor is used to drive the locking sleeve and the steel coil roller to rotate, thereby realizing the quantitative cutting of the steel coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the cross section of the flattening and cutting mechanism in the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the flattening roller in the utility model;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the compression plate and the truncated support plate in the utility model;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the steel coil replacement mechanism in the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the steel coil in the utility model.

[0028] In the figure: 1, flattening and cutting mechanism; 101, cutting workbench; 102, first motor cover; 103, flattening motor; 104, first sprocket transmission assembly; 105, first bidirectional threaded rod; 106, flattening thread sleeve; 107, mechanical revolution counter; 108, first rotating motor; 109, flattening roller; 110, lifting support column; 111, lifting top plate; 112, lifting motor; 113, lifting rotating rod; 114, bevel gear transmission assembly; 115, lifting threaded rod; 116, lifting thread sleeve; 117, cutting bracket; 118, pressing spring; 119, pressing Tightening plate; 120, translation motor; 121, second sprocket transmission assembly; 122, cut threaded rod; 123, cut threaded sleeve; 124, cut limit plate; 125, cut motor; 126, cut support plate; 127, debris collection box; 2, steel coil replacement mechanism; 201, second motor cover; 202, opening and closing motor; 203, third sprocket transmission assembly; 204, opening and closing bidirectional threaded rod; 205, opening and closing threaded sleeve; 206, opening and closing bracket; 207, locking sleeve; 208, locking groove; 209, second rotating motor; 210, steel coil roller; 211, locking block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 6 The utility model provides a technical solution: a steel coil cutting device for automobile parts processing, comprising a flattening and cutting mechanism 1, and a debris collection box 127 installed inside the flattening and cutting mechanism 1, a steel coil replacement mechanism 2 is arranged on one side inside the flattening and cutting mechanism 1, and a steel coil roller 210 is arranged in the middle of the steel coil replacement mechanism 2, the flattening and cutting mechanism 1 comprises a cutting workbench 101, a first motor cover 102 is symmetrically installed at the bottom of the cutting workbench 101, a flattening motor 103 is symmetrically installed inside the first motor cover 102, wherein the output of the flattening motor 103 is fixedly connected with a first sprocket transmission assembly 104, and a first bidirectional threaded rod 105 is symmetrically installed on the top of the first sprocket transmission assembly 104, wherein the outer sides of the two first bidirectional threaded rods 105 are symmetrically threadedly connected with flattening thread sleeves 106, a mechanical revolution counter 107 is fixedly installed on the inner side of the flattening thread sleeve 106 on one side, and a mechanical revolution counter 107 is fixedly installed on the inner side of the flattening thread sleeve 106 on the other side. A first rotating motor 108 is fixedly installed, and a flattening roller 109 is fixedly connected to the output end of the first rotating motor 108. The flattening roller 109 is rotatably connected to the mechanical revolution counter 107. A lifting support column 110 is symmetrically installed in the middle of the cutting workbench 101, and a lifting top plate 111 is fixedly installed on the top of the two lifting support columns 110. By setting the flattening and cutting mechanism 1, not only can the flattening motor 103 be used to drive the first sprocket transmission assembly 104 and the first bidirectional threaded rod 105 to rotate, so that the flattening threaded sleeve 106 drives the mechanical revolution counter 107 and the flattening roller 109 to move relative to each other, so as to flatten the steel coil to be cut off, but also the first rotating motor 108 is used to drive the flattening roller 109 to rotate, and the upper and lower first rotating motors 108 and the flattening roller 109 rotate relative to each other, so as to realize the conveying function of the steel coil, and the mechanical revolution counter 107 is used to measure the revolutions, so as to control the conveying length of the steel coil and perform quantitative cutting of the steel coil.

[0031] A lifting motor 112 is fixedly installed on one side of the lifting top plate 111, and a lifting rotating rod 113 is fixedly connected to the output end of the lifting motor 112. Bevel gear transmission components 114 are symmetrically installed at both ends of the lifting rotating rod 113. Lifting threaded rods 115 are symmetrically installed at the bottom of the two bevel gear transmission components 114. The outer sides of the two lifting threaded rods 115 are both threadedly connected to lifting threaded sleeves 116. A truncated bracket 117 is fixedly installed between the two lifting threaded sleeves 116. The bottom of the truncated bracket 117 is surrounded by A compression spring 118 is fixedly installed, a compression plate 119 is fixedly installed at the bottom of the compression spring 118, a translation motor 120 is fixedly installed on one side of the top of the truncation bracket 117, a second sprocket transmission assembly 121 is fixedly connected to the output end of the translation motor 120, a truncated threaded rod 122 is fixedly installed inside the second sprocket transmission assembly 121, a truncated threaded sleeve 123 is threadedly connected to the outer side of the truncated threaded rod 122, a truncated limit plate 124 is fixedly installed at the bottom of the truncated threaded sleeve 123, and a truncated limit plate 124 is fixedly installed at the bottom of the truncated limit plate 124. The plate 124 is slidably connected to the truncation bracket 117, a truncation motor 125 is fixedly installed at the bottom of the truncation limit plate 124, a truncation support plate 126 is fixedly installed near the bottom of the truncation motor 125 of the cutting workbench 101, a debris collection box 127 is arranged at the bottom of the truncation support plate 126, and the debris collection box 127 is slidably connected to the cutting workbench 101, and the lifting motor 112 is used to drive the lifting rotating rod 113 and the bevel gear transmission assembly 114 to rotate, so that the bevel gear transmission assembly 114 drives the lifting thread The rod 115 rotates, and at the same time, the lifting threaded sleeve 116 drives the truncation bracket 117, the clamping spring 118 and the clamping plate 119 to move up and down, and cooperates with the truncation support plate 126 at the bottom to support the steel coil. The translation motor 120 drives the second sprocket transmission assembly 121 and the truncation threaded rod 122 to rotate, so that the truncation threaded sleeve 123 drives the truncation limit plate 124 and the truncation motor 125 to move horizontally, and the truncation motor 125 is used to cut the steel coil, and the debris is collected through the debris collection box 127.

[0032] The steel coil replacement mechanism 2 includes a second motor cover 201, an opening and closing motor 202 is fixedly installed on one side of the interior of the second motor cover 201, the output end of the opening and closing motor 202 is fixedly connected to the third sprocket transmission assembly 203, one side of the third sprocket transmission assembly 203 is symmetrically fixedly connected to an opening and closing bidirectional threaded rod 204, both ends of the two opening and closing bidirectional threaded rods 204 are symmetrically threadedly connected to opening and closing threaded sleeves 205, an opening and closing bracket 206 is fixedly installed on the top of the opening and closing threaded sleeve 205 on one side, a locking sleeve 207 is fixedly installed on the inner side of the two opening and closing brackets 206, a locking groove 208 is provided in the locking sleeve 207, a second rotating motor 209 is fixedly installed on the outer side of the opening and closing bracket 206 on one side, and the output end of the second rotating motor 209 is connected to the locking The closing sleeve 207 is fixedly connected, and the two ends of the steel coil roller 210 are symmetrically equipped with locking blocks 211. The steel coil roller 210 is locked and connected with the locking sleeve 207 through the locking blocks 211 and the locking grooves 208. By setting the steel coil replacement mechanism 2, not only can the opening and closing motor 202 be used to drive the third sprocket transmission assembly 203 and the opening and closing bidirectional threaded rod 204 to rotate, but also the opening and closing threaded sleeve 205 can drive the opening and closing bracket 206 and the locking sleeve 207 to move relative to each other. The locking groove 208 on the inner side of the locking sleeve 207 and the locking blocks 211 on both sides of the steel coil roller 210 are used to realize the installation and disassembly of the steel coil roller 210. At the same time, the second rotating motor 209 is used to drive the locking sleeve 207 and the steel coil roller 210 to rotate, thereby realizing the quantitative cutting of the steel coil.

[0033] Working principle: Before using this steel coil cutting equipment for automobile parts processing, it is necessary to check the overall condition of the device to ensure that it can work normally. Figure 1 - Figure 6As shown, firstly, the opening and closing motor 202 can be used to drive the third sprocket transmission assembly 203 and the opening and closing bidirectional threaded rod 204 to rotate, so that the opening and closing threaded sleeve 205 drives the opening and closing bracket 206 and the engaging sleeve 207 to move relative to each other, and the engaging groove 208 on the inner side of the engaging sleeve 207 is used to engage and connect with the engaging blocks 211 on both sides of the steel coil roller 210 to realize the installation and disassembly of the steel coil roller 210, and at the same time, the second rotating motor 209 is used to drive the engaging sleeve 207 and the steel coil roller 210 to rotate, so as to realize the quantitative cutting of the steel coil, and secondly, the flattening motor 103 is used to drive the first sprocket transmission assembly 104 and the first bidirectional threaded rod 105 to rotate, so that the flattening threaded sleeve 106 drives the mechanical circle counter 107 and the flattening roller 109 to move relative to each other, so as to flatten the steel coil that needs to be cut, and at the same time, the first rotating motor 108 is used to drive the flattening roller 109 to rotate, and the upper and lower first rotating motors 108 and 109 are used to rotate. The motor 108 and the flattening roller 109 rotate relative to each other, thereby realizing the conveying function of the steel coil. The mechanical circle counter 107 is used to measure the number of circles, thereby controlling the conveying length of the steel coil and performing quantitative cutting of the steel coil. Finally, the lifting motor 112 is used to drive the lifting rotating rod 113 and the bevel gear transmission assembly 114 to rotate, so that the bevel gear transmission assembly 114 drives the lifting threaded rod 115 to rotate, and at the same time, the lifting threaded sleeve 116 drives the truncation bracket 117, the clamping spring 118 and the clamping plate 119 to move up and down, and cooperates with the truncation support plate 126 at the bottom to support the steel coil. The translation motor 120 is used to drive the second sprocket transmission assembly 121 and the truncation threaded rod 122 to rotate, so that the truncation threaded sleeve 123 drives the truncation limit plate 124 and the truncation motor 125 to move horizontally, and the truncation motor 125 is used to cut the steel coil, and the debris is collected through the debris collection box 127.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel coil cutting device for processing automobile parts, comprising a flattening and cutting mechanism (1), and a debris collection box (127) installed inside the flattening and cutting mechanism (1); A steel coil replacement mechanism (2) is provided on one side of the interior of the flattening and cutting mechanism (1), and a steel coil roller (210) is provided in the middle of the steel coil replacement mechanism (2); It is characterized in that Also includes: The flattening and cutting mechanism (1) comprises a cutting workbench (101), a first motor cover (102) being symmetrically mounted on the bottom of the cutting workbench (101), and a flattening motor (103) being symmetrically mounted inside the first motor cover (102); The output end of the flattening motor (103) is fixedly connected to a first sprocket transmission assembly (104), and a first bidirectional threaded rod (105) is symmetrically mounted on the top of the first sprocket transmission assembly (104); The outer sides of the two first bidirectional threaded rods (105) are symmetrically threadedly connected with flattened threaded sleeves (106); a mechanical revolution counter (107) is fixedly mounted on the inner side of the flattened threaded sleeve (106) on one side; and a first rotating motor (108) is fixedly mounted on the inner side of the flattened threaded sleeve (106) on the other side.

2. The steel coil cutting equipment for automobile parts processing according to claim 1 is characterized in that: The output end of the first rotating motor (108) is fixedly connected to a flattening roller (109), and the flattening roller (109) is rotatably connected to a mechanical revolution counter (107). Lifting support columns (110) are symmetrically mounted in the middle of the cutting workbench (101), and a lifting top plate (111) is fixedly mounted on the top of two lifting support columns (110), and a lifting motor (112) is fixedly mounted on one side of the lifting top plate (111).

3. The steel coil cutting equipment for automobile parts processing according to claim 2 is characterized in that: The output end of the lifting motor (112) is fixedly connected to a lifting rotating rod (113), bevel gear transmission assemblies (114) are symmetrically installed at both ends of the lifting rotating rod (113), lifting threaded rods (115) are symmetrically installed at the bottom of the two bevel gear transmission assemblies (114), the outer sides of the two lifting threaded rods (115) are both threadedly connected to lifting threaded sleeves (116), a truncation bracket (117) is fixedly installed between the two lifting threaded sleeves (116), a clamping spring (118) is fixedly installed around the bottom of the truncation bracket (117), and a clamping plate (119) is fixedly installed at the bottom of the clamping spring (118).

4. The steel coil cutting device for automobile parts processing according to claim 3 is characterized in that: A translation motor (120) is fixedly mounted on one side of the top of the truncation bracket (117); an output end of the translation motor (120) is fixedly connected to a second sprocket transmission assembly (121); a truncation threaded rod (122) is fixedly mounted inside the second sprocket transmission assembly (121); an outer side of the truncation threaded rod (122) is threadedly connected to a truncation threaded sleeve (123); a truncation limit plate (124) is fixedly mounted on the bottom of the truncation threaded sleeve (123); and the truncation limit plate (124) is slidably connected to the truncation bracket (117).

5. The steel coil cutting device for automobile parts processing according to claim 4 is characterized in that: A cutting motor (125) is fixedly mounted on the bottom of the cutting limit plate (124); a cutting support plate (126) is fixedly mounted on the bottom of the cutting workbench (101) near the cutting motor (125); the debris collection box (127) is arranged at the bottom of the cutting support plate (126); and the debris collection box (127) is slidably connected to the cutting workbench (101).

6. The steel coil cutting equipment for automobile parts processing according to claim 1, characterized in that: The steel coil replacement mechanism (2) comprises a second motor cover (201), an opening and closing motor (202) is fixedly mounted on one side of the interior of the second motor cover (201), an output end of the opening and closing motor (202) is fixedly connected to a third sprocket transmission assembly (203), one side of the third sprocket transmission assembly (203) is symmetrically fixedly connected to an opening and closing bidirectional threaded rod (204), and both ends of the two opening and closing bidirectional threaded rods (204) are symmetrically threadedly connected to an opening and closing threaded sleeve (205).

7. The steel coil cutting device for automobile parts processing according to claim 6, characterized in that: An opening and closing bracket (206) is fixedly mounted on the top of the opening and closing threaded sleeve (205) on one side, a locking sleeve (207) is fixedly mounted on the inner sides of the two opening and closing brackets (206), and a locking groove (208) is provided inside the locking sleeve (207). A second rotating motor (209) is fixedly mounted on the outer side of the opening and closing bracket (206) on one side, and the output end of the second rotating motor (209) is fixedly connected to the locking sleeve (207). Locking blocks (211) are symmetrically mounted on both ends of the steel coil (210), and the steel coil (210) is locked and connected to the locking sleeve (207) via the locking blocks (211) and the locking groove (208).

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