Vertical spiral loop emptying device for strip steel

Abstract

The invention relates to the technical field of strip steel storage, in particular to a vertical spiral loop discharging device for strip steel, which comprises a rack, a storage outer cage module is rotatably mounted on the rack, the axis of the storage outer cage module is horizontal, a storage inner cage module is coaxially arranged in the storage outer cage module, a spiral guide-out module is coaxially arranged in the storage inner cage module, and a spiral guide-out module is coaxially arranged in the spiral guide-out module. The storage inner cage module and the spiral leading-out module are both fixedly connected with the rack, and the storage outer cage module, the storage inner cage module and the spiral leading-out module are each provided with a plurality of rotating roller assemblies; according to the invention, the mounting shaft is rotationally connected with the rotating roller, and the outer side of the rotating roller is provided with the flexible sheet with the mesh raised lines, so that the conversion from sliding friction to rolling friction between the strip steel and the rotating roller is realized, scratches and abrasive dust on the surface of the strip steel are effectively reduced, the surface quality of the strip steel is improved, meanwhile, the energy loss is reduced, and the service life of the strip steel is prolonged. And the working efficiency of the discharging device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strip steel storage, in particular to a vertical spiral loop feeding device for strip steel. BACKGROUND

[0002] The vertical spiral loop feeding device is a key equipment in the continuous production line of strip steel, and mainly functions to realize the intermediate storage and supply of strip steel under the condition that the production line does not stop, so as to ensure the continuity of the production process. Compared with the traditional horizontal loop feeding device, the vertical spiral loop feeding device vertically stacks the storage space, thereby significantly reducing the floor area; at the same time, the vertical spiral loop feeding device adopts a flat-in flat-out strip steel process, avoiding the rotation of the strip steel in the process of entering and exiting, thereby preventing the tensile deformation of the strip edge, which is particularly obvious when processing 0.3-0.6mm ultra-thin strip steel and soft materials such as aluminum strip.

[0003] However, in the prior art, the conventional spiral loop feeding device causes scratches or abrasions on the surface of the strip steel when storing and feeding the strip steel, thereby reducing the surface quality of the strip steel, because the strip steel is supported on the fixed rollers by tension, and there is a large sliding friction between the strip steel and the rollers. In view of this problem, the prior art provides some solutions, such as using light rollers or chrome-plated rollers to reduce the friction coefficient between the strip steel and the rollers, but this solution can only slightly improve the wear problem; for example, lubricating oil is provided on the surface of the strip steel, which can contaminate the surface of the strip steel and affect the subsequent plating or coating quality of the strip steel; for example, engineering plastic rollers are used, which have lower strength than the strip steel, but there is still sliding friction between the strip steel and the rollers, and the surface of the rollers is easily damaged, thereby increasing the maintenance cost of the vertical spiral loop feeding device. SUMMARY

[0004] The present application aims to provide a vertical spiral loop feeding device for strip steel, which can solve the problem that the vertical spiral loop feeding device causes scratches or abrasions on the surface of the strip steel during operation, thereby reducing the surface quality of the strip steel, and can also solve the defects in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The utility model provides a vertical spiral loop feeding device for strip steel, which comprises a rack, a storage outer cage module is rotatably installed on the rack, the axis of the storage outer cage module is horizontal, a storage inner cage module is coaxially arranged in the storage outer cage module, a spiral guide-out module is coaxially arranged in the storage inner cage module, the storage inner cage module and the spiral guide-out module are fixedly connected with the rack, a plurality of rotating roller assemblies are arranged on the storage outer cage module, the storage inner cage module and the spiral guide-out module, each rotating roller assembly comprises a mounting shaft and a rotating roller, the mounting shaft is threadedly connected with the storage outer cage module, the storage inner cage module and the spiral guide-out module, and bearings are coaxially arranged in mounting seats which are threadedly connected with the two ends of the rotating roller.

[0007] The rotating roller is rotatably connected with the mounting shaft, so that the rotating roller can rotate adaptively according to the movement of the strip steel during the storage and feeding process, the sliding friction between the strip steel and the rotating roller is effectively converted into rolling friction, the scratch and the abrasive dust on the surface of the strip steel are greatly reduced, the surface quality of the strip steel is improved, the energy loss caused by the friction between the strip steel and the rotating roller is reduced, and the working efficiency of the feeding device is improved.

[0008] Preferably, the outer side wall of the rotating roller is provided with N flexible sheets, the N flexible sheets on each rotating roller are circumferentially distributed, and the side walls of adjacent two flexible sheets are in close contact, and the outer side wall of the flexible sheet is provided with a raised pattern of a mesh surface.

[0009] The flexible sheet is arranged on the outer side wall of the rotating roller, the contact area between the rotating roller and the strip steel is increased, the friction between the rotating roller and the strip steel is further enhanced due to the unique raised pattern of the mesh surface, and the friction is soft rolling friction instead of sliding friction, so that the stable transmission of the strip steel is ensured, and the surface of the strip steel is effectively protected from being scratched.

[0010] Preferably, 2N installation grooves are formed in each rotating roller, the installation grooves comprise an insertion section and a limiting section, the inner side wall of each flexible sheet is provided with two insertion sheets, the two insertion sheets are symmetrically arranged and have an angle interval greater than 85°, the two insertion sheets comprise an embedded part and a hook, the hook is arranged at the end of the embedded part away from the flexible sheet, the two hooks on each flexible sheet are oppositely arranged, the insertion section is communicated with the limiting section, the limiting section is arranged at the end of the insertion section away from the outer side wall of the rotating roller, and the hook part is embedded in the limiting section when the flexible sheet is installed on the rotating roller.

[0011] Through the installation of the slot and the insertion piece, the flexible piece is securely installed on the rotating roller. The insertion section provides guidance for the initial insertion of the flexible piece, ensuring that the insertion piece can accurately and accurately enter the predetermined position. The limiting section firmly fixes the flexible piece on the rotating roller through the cooperation of the hook ear and the embedded part, preventing it from loosening or falling off during work. This design not only ensures the connection strength between the flexible piece and the rotating roller, but also facilitates quick disassembly and replacement when needed. Further, the unique design of the installation slot and the insertion piece also makes the distribution of the flexible piece on the rotating roller more uniform, and each flexible piece can be accurately positioned in the preset position, thereby ensuring that the rotating roller maintains consistent support and friction of the strip steel during rotation, avoiding problems such as unstable strip steel transmission or surface quality degradation caused by uneven distribution of flexible pieces. At the same time, this design also improves the reliability and durability of the entire feeding device, reduces downtime for maintenance due to loose or damaged parts, and further improves production efficiency.

[0012] Preferably, the insertion section is provided with an arc-shaped part on the side wall away from the hook ear, the opening of the arc-shaped part faces the hook ear side, the side wall of the arc-shaped part away from the hook ear is attached to the inner side wall of the insertion section, and the end of the arc-shaped part away from the flexible piece is attached to the bottom wall of the insertion section.

[0013] Through the installation of the slot and the insertion piece, the flexible piece is securely installed on the rotating roller. The insertion section provides guidance for the initial insertion of the flexible piece, ensuring that the insertion piece can accurately and accurately enter the predetermined position. The limiting section firmly fixes the flexible piece on the rotating roller through the cooperation of the hook ear and the embedded part, preventing it from loosening or falling off during work. This design not only ensures the connection strength between the flexible piece and the rotating roller, but also facilitates quick disassembly and replacement when needed. Further, the unique design of the installation slot and the insertion piece also makes the distribution of the flexible piece on the rotating roller more uniform, and each flexible piece can be accurately positioned in the preset position, thereby ensuring that the rotating roller maintains consistent support and friction of the strip steel during rotation, avoiding problems such as unstable strip steel transmission or surface quality degradation caused by uneven distribution of flexible pieces. At the same time, this design also improves the reliability and durability of the entire feeding device, reduces downtime for maintenance due to loose or damaged parts, and further improves production efficiency.

[0014] Preferably, each of the flexible pieces is provided with two disassembly holes, the two disassembly holes pass through the inner and outer sides of the flexible piece, and the two disassembly holes are symmetrically arranged on the inner side of the two embedded parts, and the two disassembly holes are connected to the insertion section.

[0015] When the flexible sheet is damaged, the damaged flexible sheet can be directly pried out of the mounting groove with a tool, but this dismounting method is time-consuming; through the setting of the dismounting hole, when the damaged flexible sheet is dismounted, a tool is inserted into the dismounting hole, the side wall of the embedded part is extruded by the tool, the embedded part is deformed by extrusion, the lug is pushed out of the limiting section, thereby the limiting effect of the lug and the limiting section is released, and then the flexible sheet can be easily taken off from the rotating roller, which greatly simplifies the replacement process of the flexible sheet, shortens the time of equipment downtime maintenance, and improves the production efficiency. At the same time, the existence of the dismounting hole will not affect the performance of the flexible sheet in the normal working state, ensuring the effectiveness of the flexible sheet in protecting the surface quality of the steel strip.

[0016] At the same time, in cooperation with the arc-shaped part, when the embedded part is extruded by the tool, the arc-shaped part also elastically deforms, the arc-shaped part provides a pushing force for the insertion sheet towards the outside of the mounting groove, and in the process of extruding the side wall of the embedded part by the tool, the elastic deformation of the arc-shaped part further assists the lug to come out of the limiting section, this double-acting mechanism makes the dismounting process of the flexible sheet more smooth and efficient, not only reduces the operation difficulty of the maintenance personnel, but also avoids the damage to the rotating roller or other parts caused by excessive force or improper operation.

[0017] Preferably, two ends of each of the flexible sheets are provided with two mounting holes, the mounting holes penetrate through the inner and outer sides of the flexible sheet, the outer side walls of the two mounting seats are provided with embedded grooves, each of the mounting holes is provided with a positioning block, the positioning block includes an extension part and a limiting part, the extension part extends to the outside of the flexible sheet, the extension part is provided with a stress hole, the limiting part is arranged in the embedded groove, and the limiting part is attached to the inner side wall of the flexible sheet.

[0018] Through the setting of the positioning block and the embedded groove, the extension part of the positioning block extends out of the flexible sheet and is provided with a stress hole, which facilitates the application of force by a tool during dismounting to realize the quick dismounting of the flexible sheet, while the limiting part is embedded in the embedded groove of the mounting seat and tightly attached to the inner side wall of the flexible sheet, effectively preventing the axial movement or radial deviation of the flexible sheet during work, ensuring the stability of the relative position between the flexible sheet and the rotating roller, improving the connection reliability between the flexible sheet and the rotating roller, and further ensuring the stability and surface quality of the steel strip during transmission.

[0019] Further, the combined design of the positioning block and the embedded groove also has certain universality and interchangeability, facilitating the installation and use of flexible sheets of different specifications and models on the rotating roller, improving the flexibility and adaptability of the equipment; during the transmission of the steel strip, the extension parts extending to the outside of the flexible sheet limit the sliding of the steel strip in the axial direction, avoiding the steel strip from being out of the effective range of the rotating roller.

[0020] Preferably, the rotating roller is provided with a connecting sleeve, and the two mounting shafts on each rotating roller are inserted into the connecting sleeve and are threadedly connected to the connecting sleeve at one end.

[0021] By providing the connecting sleeve in the rotating roller and threadedly connecting the two mounting shafts to the connecting sleeve, the two mounting shafts form an integral shaft, thereby enhancing the connection strength and stability between the rotating roller and the mounting shafts, avoiding the problem of unstable operation of the rotating roller caused by loosening or falling off of the mounting shafts, and ensuring the stability and continuity of the strip steel during the transmission process.

[0022] Preferably, the side wall of the insertion section at the end connected to the inner side wall of the flexible sheet is provided with a round chamfer, the hook ear is embedded in 1 / 3 to 1 / 2 arc length of the limiting section when the flexible sheet is mounted on the rotating roller, and the thickness of the hook ear is 1 / 2 of the thickness of the limiting section.

[0023] By providing the round chamfer at the joint between the insertion section and the flexible sheet, stress concentration between the insertion section and the flexible section is avoided, and the round chamfer can effectively disperse stress during the insertion and rotation of the flexible sheet, preventing cracking or damage of the flexible sheet caused by excessive local stress, thereby prolonging the service life of the flexible sheet and reducing the maintenance cost of the equipment.

[0024] Further, the design that the hook ear is embedded in 1 / 3 to 1 / 2 arc length of the limiting section ensures sufficient contact area between the hook ear and the limiting section to ensure stable mounting of the flexible sheet on the rotating roller, and avoids difficult disassembly caused by embedding the hook ear too deeply, so that the flexible sheet can be easily removed when it needs to be replaced or repaired. The thickness of the hook ear is 1 / 2 of the thickness of the limiting section, and this proportion design enables the hook ear to bear sufficient force in the limiting section without occupying too much space due to excessive thickness, thereby ensuring the compactness and stability between the flexible sheet and the rotating roller.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] 1. By threadedly connecting the mounting shafts to the rotating roller and providing the flexible sheet with the mesh surface protruding lines outside the rotating roller, the present application realizes the transition from sliding friction to rolling friction between the strip steel and the rotating roller, effectively reduces the scratching and abrasive dust on the surface of the strip steel, improves the surface quality of the strip steel, reduces energy loss, and improves the working efficiency of the discharging device.

[0027] 2、The unique design of the installation groove, the insertion piece and the positioning block and other structures ensures the stable installation and quick disassembly of the flexible piece on the rotating roller, guarantees the connection strength and stability between the flexible piece and the rotating roller, facilitates timely replacement when the flexible piece is damaged, reduces the maintenance cost and time, and improves the production efficiency.

[0028] 3、The connection of the mounting shaft and the rotating roller is more reliable by arranging the connecting sleeve in the rotating roller, the stability of the overall structure is enhanced, the unstable operation problem caused by the loosening of the mounting shaft is avoided, the maintenance and replacement process of the mounting shaft is simplified, the maintainability of the equipment is improved, in addition, the details such as the round chamfer, the embedded depth and thickness of the hook ear further optimize the cooperation of the flexible piece and the rotating roller, the durability and installation stability of the flexible piece are guaranteed, quick disassembly and replacement are facilitated, the downtime of the equipment and the maintenance cost are effectively reduced, the production efficiency and the stability of the strip steel transmission are improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of the vertical spiral loop feeding device for strip steel of the application.

[0030] Figure 2 It is a structural schematic view of the rotating roller assembly in the vertical spiral loop feeding device for strip steel of the application.

[0031] Figure 3 It is a top view of the rotating roller assembly in the vertical spiral loop feeding device for strip steel of the application.

[0032] Figure 4 It is Figure 3 A-A and full section view.

[0033] Figure 5 It is Figure 3 B-B and full section view.

[0034] Figure 6 It is Figure 5 C local enlarged view.

[0035] In the figure: 1, rack; 2, storage outer cage module; 3, storage inner cage module; 4, spiral guide-out module; 5, mounting shaft; 6, rotating roller; 7, mounting seat; 8, bearing; 9, flexible piece; 10, installation groove; 11, insertion section; 12, limiting section; 13, insertion piece; 14, embedded part; 15, hook ear; 16, arc-shaped part; 17, disassembly hole; 18, mounting hole; 19, embedded groove; 20, positioning block; 21, extension part; 22, limiting part; 23, stress hole; 24, connecting sleeve; 25, round chamfer. DETAILED DESCRIPTION

[0036] Please refer to Figures 1 to 6The application provides a vertical spiral loop feeding device for strip steel.

[0037] The application provides a vertical spiral loop feeding device for strip steel. Figures 1 to 6 , comprising a rack 1, a storage outer cage module 2 is rotatably installed on the rack 1, the axis of the storage outer cage module 2 is horizontal, a storage inner cage module 3 is coaxially arranged in the storage outer cage module 2, a spiral guide-out module 4 is coaxially arranged in the storage inner cage module 3, the storage inner cage module 3 and the spiral guide-out module 4 are fixedly connected with the rack 1, a plurality of rotating roller assemblies are arranged on the storage outer cage module 2, the storage inner cage module 3 and the spiral guide-out module 4, the rotating roller assembly comprises a mounting shaft 5 and a rotating roller 6, the mounting shaft 5 is threadedly connected with the storage outer cage module 2, the storage inner cage module 3 and the spiral guide-out module 4, mounting seats 7 are coaxially and threadedly connected with both ends of the rotating roller 6, bearings 8 are coaxially arranged in the mounting seats 7, the mounting shaft 5 is rotatably connected with the mounting seat 7 through the bearing 8, a connecting sleeve 24 is arranged in the rotating roller 6, and the two mounting shafts 5 on each rotating roller 6 are threadedly connected with the connecting sleeve 24.

[0038] Please refer to Figure 6 Eight mounting grooves 10 are formed in each rotating roller 6, the mounting groove 10 comprises an insertion section 11 and a limiting section 12, two insertion pieces 13 are arranged on the inner side wall of each flexible piece 9, the two insertion pieces 13 are symmetrically arranged and the angle interval is 86°, the two insertion pieces 13 comprise an embedded part 14 and a hook ear 15, the hook ear 15 is arranged at the end of the embedded part 14 away from the flexible piece 9, the two hook ears 15 on each flexible piece 9 are oppositely arranged, the insertion section 11 is communicated with the limiting section 12, the limiting section 12 is arranged at the end of the insertion section 11 away from the outer side wall of the rotating roller 6, and the hook ear 15 is embedded in the limiting section 12 when the flexible piece 9 is mounted on the rotating roller 6.

[0039] Please refer to Figures 3 to 5Two dismounting holes 17 are arranged on each flexible sheet 9, and the two dismounting holes 17 penetrate the inner and outer sides of the flexible sheet 9, two dismounting holes 17 are symmetrically arranged on the inner side of the two embedding parts 14, and the two dismounting holes 17 are communicated with the insertion section 11. Two mounting holes 18 are arranged at the two ends of each flexible sheet 9, and the mounting holes 18 penetrate the inner and outer sides of the flexible sheet 9, the outer side wall of the two mounting seats 7 is provided with an embedding groove 19, a positioning block 20 is arranged in each mounting hole 18, the positioning block 20 comprises an extension part 21 and a limiting part 22, the extension part 21 penetrates and extends to the outside of the flexible sheet 9, a stress hole 23 is arranged on the extension part 21, the limiting part 22 is arranged in the embedding groove 19, and the limiting part 22 is attached to the inner side wall of the flexible sheet 9.

[0040] Working principle, please refer to Figures 1 to 6When the vertical spiral loop feeding device for strip steel starts to work, the frame 1 serves as the support structure of the whole device, ensuring the stable installation of each component. The storage outer cage module 2 rotates around its horizontal axis on the frame 1, driving the coaxially arranged storage inner cage module 3 to rotate. Since the spiral guide-out module 4 is coaxially arranged in the storage inner cage module 3, and the storage inner cage module 3 and the spiral guide-out module 4 are fixedly connected with the frame 1, the storage inner cage module 3 remains relatively static during the rotation of the storage outer cage module 2, while the spiral guide-out module 4 gradually guides the strip steel stored in the storage inner cage module 3 out through its special spiral structure. The mounting shaft 5 is threadedly connected with the storage outer cage module 2, the storage inner cage module 3 and the spiral guide-out module 4, ensuring the stable installation of the rotating roller 6. The mounting seat 7 at both ends of the rotating roller 6 is rotatably connected with the mounting shaft 5 through the bearing 8, allowing the rotating roller 6 to rotate flexibly. The flexible sheet 9 arranged on the outer sidewall of the rotating roller 6 not only increases the contact area with the strip steel, but also enhances the friction between the flexible sheet 9 and the strip steel through the design of the raised pattern on the mesh surface, ensuring the stable transmission of the strip steel. At the same time, the insertion sheet 13 on the flexible sheet 9 tightly fits with the mounting groove 10 on the rotating roller 6, ensuring the stable installation of the flexible sheet 9 on the rotating roller 6 through the guiding effect of the insertion section 11 and the fixing effect of the limiting section 12. During the transmission of the strip steel, the flexible sheet 9 is subjected to pressure from the strip steel, which is evenly distributed to the rotating roller 6 through the arc-shaped portion 16, avoiding damage to the flexible sheet 9 or deformation of the rotating roller 6 caused by local stress concentration. When it is necessary to replace or repair the flexible sheet 9, a tool is inserted into the disassembly hole 17, the sidewall of the extrusion embedded portion 14 is squeezed, the hook 15 is detached from the limiting section 12, and the flexible sheet 9 can be easily removed. This design greatly simplifies the replacement process of the flexible sheet 9 and shortens the equipment downtime for maintenance. In addition, the arrangement of the positioning block 20 and the embedded groove 19 further ensures the stability of the flexible sheet 9 during operation, preventing the axial movement or radial deviation of the flexible sheet 9. The design of the connecting sleeve 24 in the rotating roller 6 enhances the connection strength and stability between the rotating roller 6 and the mounting shaft 5, avoiding the unstable operation of the rotating roller 6 caused by the loosening or falling off of the mounting shaft 5. The round chamfer 25 at the junction between the insertion section 11 and the inner sidewall of the flexible sheet 9 effectively disperses the stress, preventing the cracking or damage of the flexible sheet 9.

[0041] The above detailed description of one specific embodiment of the present application is made in conjunction with the accompanying drawings, but the present application is not limited to the above described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of these embodiments can be made without departing from the principles and ideas of the present application, which should still fall within the protection scope of the present application.

Claims

1. A vertical spiral looper feeding device for strip steel, comprising a frame (1), characterized in that, A storage outer cage module (2) is rotatably mounted on the frame (1). The axis of the storage outer cage module (2) is horizontal. A storage inner cage module (3) is coaxially arranged inside the storage outer cage module (2). A spiral discharge module (4) is coaxially arranged inside the storage inner cage module (3). The storage inner cage module (3) and the spiral discharge module (4) are both fixedly connected to the frame (1). Multiple rotating roller assemblies are provided on the storage outer cage module (2), the storage inner cage module (3), and the spiral discharge module (4). The rotating roller assembly includes a mounting shaft (5) and a rotating roller (6). The mounting shaft (5) is threadedly connected to the storage outer cage module (2), the storage inner cage module (3), and the spiral discharge module (4). Both ends of the rotating roller (6) are coaxially threadedly connected to mounting seats (7). A bearing (8) is coaxially installed inside the mounting seat (7). The mounting shaft (5) and the mounting seat (7) are rotatably connected through the bearing (8).

2. The vertical spiral looper feeding device for strip steel according to claim 1, characterized in that, The outer side wall of the rotating roller (6) is provided with N flexible sheets (9). The N flexible sheets (9) on each rotating roller (6) are evenly distributed around the circumference, and the side walls of two adjacent flexible sheets (9) are fitted together. The outer side wall of each flexible sheet (9) is provided with raised textures of mesh.

3. The vertical spiral looper feeding device for strip steel according to claim 2, characterized in that, Each of the rollers (6) is provided with 2N mounting grooves (10). The mounting grooves (10) include an insertion section (11) and a limiting section (12). Each flexible sheet (9) has two insertion pieces (13) on its inner sidewall. The two insertion pieces (13) are symmetrically arranged and the angular distance between them is greater than 85°. The two insertion pieces (13) include an embedding part (14) and a hook (15). The hook (15) is located at the end of the embedding part (14) away from the flexible sheet (9). The two hooks (15) on each flexible sheet (9) are arranged opposite to each other. The insertion section (11) is connected to the limiting section (12). The limiting section (12) is located at the end of the insertion section (11) away from the outer sidewall of the roller (6). When the flexible sheet (9) is installed on the roller (6), the hook (15) is embedded in the limiting section (12).

4. The vertical spiral looper feeding device for strip steel according to claim 3, characterized in that, The insertion section (11) has an arc-shaped part (16) on the side wall away from the hook (15). The opening of the arc-shaped part (16) faces the hook (15). The side wall of the arc-shaped part (16) away from the hook (15) is in contact with the inner side wall of the insertion section (11), and the end of the arc-shaped part (16) away from the flexible sheet (9) is in contact with the bottom wall of the insertion section (11).

5. A vertical spiral looper feeding device for strip steel according to claim 4, characterized in that, Each of the flexible sheets (9) is provided with two disassembly holes (17). The two disassembly holes (17) penetrate the inner and outer sides of the flexible sheet (9). The two disassembly holes (17) are symmetrically arranged on the inner side of the two embedded parts (14), and both disassembly holes (17) are connected to the insertion section (11).

6. A vertical spiral looper feeding device for strip steel according to claim 4, characterized in that, Each of the flexible sheets (9) has two mounting holes (18) at both ends. The mounting holes (18) penetrate the inner and outer sides of the flexible sheet (9). The outer side walls of the two mounting bases (7) are provided with embedding grooves (19). Each mounting hole (18) is provided with a positioning block (20). The positioning block (20) includes an extension (21) and a limiting part (22). The extension (21) extends through to the outside of the flexible sheet (9). The extension (21) is provided with a force-bearing hole (23). The limiting part (22) is located in the embedding groove (19) and is in contact with the inner side wall of the flexible sheet (9).

7. A vertical spiral looper feeding device for strip steel according to claim 1, characterized in that, The roller (6) is provided with a connecting sleeve (24), and the two mounting shafts (5) on each roller (6) are threadedly connected to the connecting sleeve (24) at one end inserted into the roller (6).

8. A vertical spiral looper feeding device for strip steel according to claim 2, characterized in that, The side wall of the insertion section (11) connected to the inner side wall of the flexible sheet (9) is provided with a rounded chamfer (25). When the flexible sheet (9) is installed on the rotating roller (6), the hook (15) is embedded in the limiting section (12) for 1 / 3 to 1 / 2 arc length. The thickness of the hook (15) is 1 / 2 of the thickness of the limiting section (12).

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