Steel sheet unwinding device for steel pipe machining

By designing a steel sheet unwinding device with a bracket, rotating shaft, hydraulic system, and limiting components, the problem of unstable positioning of steel coils with different inner diameters in existing equipment has been solved, achieving stable support and efficient unwinding.

CN224253876UActive Publication Date: 2026-05-19ZHANGJIAGANG ZHONGZHENGLIAN PRECISION TUBE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHANGJIAGANG ZHONGZHENGLIAN PRECISION TUBE MFG CO LTD
Filing Date
2025-06-16
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing uncoiling equipment suffers from unstable positioning and inconvenient operation when handling steel coils of different inner diameters, thus affecting the efficiency of steel coil placement.

Method used

A steel sheet uncoiling device was designed, comprising a bracket, a rotating shaft, a support, a side limiting component, and a locking limiting component. The inner wall of the steel coil is supported by a hydraulic system, and the side of the steel coil is limited by a collar, a limiting strip, and a baffle. The collar can be detachably installed using bevel gears and screws.

Benefits of technology

It achieves stable support and positioning for steel coils with different inner diameters, improves unwinding efficiency, prevents steel coils from loosening and shifting, and adapts to the needs of steel coils of different sizes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of steel pipe machining, and discloses a steel sheet unwinding device for steel pipe machining, which comprises a support, a mounting disc is fixedly mounted at the top of the support, a rotating shaft is rotatably connected to the center of the mounting disc, and supporting edges for supporting the inner wall of a steel coil from inside to outside are arranged on the outer side of the rotating shaft in an array manner. A transmission assembly used for driving the supporting edge to ascend and descend is arranged in the rotating shaft, a protruding part is arranged on one side of the front face of the rotating shaft, a side edge limiting assembly used for limiting the side face of the steel coil is arranged on the outer side of the protruding part, and a locking limiting assembly used for limiting the side edge limiting assembly is arranged in the protruding part. Oil liquid is squeezed into the oil pressure pipe, so that the oil liquid is squeezed into the supporting cylinder, the piston sliding block is pushed to move outwards, the supporting edge is driven by the supporting rod to move outwards to tightly abut against the inner wall of the steel coil, supporting and positioning can be conducted from the interior of the steel coil, and the steel coil positioning device can be suitable for positioning of steel coils with different inner diameter sizes.
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Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, specifically to a steel sheet uncoiling device for steel pipe processing. Background Technology

[0002] Steel coils are used in the manufacture of steel pipes. They are usually made of stainless steel or galvanized iron. In the process of processing steel pipes, the steel coils need to be placed first to facilitate subsequent uncoiling and processing, which requires uncoiling equipment.

[0003] Existing uncoiling equipment typically involves lifting the steel coil with a crane, aligning the center of the coil with the uncoiling equipment, and then placing the coil on the outside. However, since the inner diameter of the steel coil varies, it is necessary to insert support plates inside to ensure stable positioning, which is inconvenient and affects the efficiency of coil placement. Therefore, further improvements are needed. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides the following technical solution: a steel sheet uncoiling device for steel pipe processing, comprising a support, an mounting plate fixedly installed on the top of the support, a rotating shaft rotatably connected to the center of the mounting plate, support edges arranged in an array on the outer side of the rotating shaft for supporting the inner wall of the steel coil from the inside out, a transmission component for driving the support edges to rise and fall inside the rotating shaft, a protrusion on one side of the front of the rotating shaft, a side limiting component for limiting the side of the steel coil arranged on the outer side of the protrusion, and a locking limiting component for limiting the side limiting component inside the protrusion.

[0005] As an optimization, the transmission assembly includes a hydraulic pipe fixedly installed inside the rotating shaft. One end of the hydraulic pipe is fixedly connected to an oil guide pipe, and the end of the oil guide pipe is connected to a hydraulic cylinder. A support cylinder is fixedly installed on the outer side of the hydraulic pipe corresponding to the support edge array. The support cylinder is slidably connected inside the piston slider. A support rod is fixedly installed between the piston slider and the support edge, and a compression spring is sleeved on the outer side of the support rod.

[0006] As an optimization, the side limiting component includes a collar sleeved on the outside of the protrusion, a limiting groove is formed on the inner side of the collar, a limiting strip is fixedly installed on the outside of the protrusion corresponding to the limiting groove, and the limiting groove inside the collar is sleeved on the outside of the limiting strip. Four sets of edge guards for limiting the side of the steel coil are fixedly installed in an array on the outer side of the collar.

[0007] As an optimization, the edge retainer includes a vertical plate fixedly installed on the outside of the collar, a telescopic rod fixedly installed on one side of the back of the vertical plate, a baffle fixedly installed on one end of the back of the telescopic rod, and the baffle abuts against the side of the steel coil under the action of the elastic force of the telescopic rod.

[0008] As an optimization, two sets of grips are symmetrically fixedly installed on one side of the front of the collar, and a cross groove is opened on the inner wall of the collar corresponding to the locking and limiting component. The grips on both sides make it easy to hold and pick up the collar, which facilitates installation and disassembly.

[0009] As an optimization, the locking and limiting assembly includes a cross-shaped locking rod that is slidably inserted into the inside of the protrusion. A screw is screwed into the inside of the cross-shaped locking rod, and the screw is rotatably connected inside the protrusion. A driven bevel gear is fixedly installed at one end of the screw near the center. A rotating rod is rotatably connected to the center of the inside of the protrusion. A main bevel gear is fixedly installed at one end of the rotating rod located inside the center of the protrusion, and the main bevel gear and the driven bevel gear are meshed together.

[0010] As an optimization, a knob is fixedly installed on one end of the front of the rotating rod, and a support rod is fixedly installed on the outer side of the knob. The rotating rod can be easily driven to rotate by turning the support rod.

[0011] The beneficial effects of this utility model are:

[0012] This steel sheet uncoiling device for steel pipe processing squeezes oil into the hydraulic pipe, causing the oil to be forced into the support cylinder. This pushes the piston slider to move outward, which in turn drives the support rod to move the support edge outward and tightly press against the inner wall of the steel coil. This allows for support and positioning from inside the steel coil and can be used for positioning steel coils with different inner diameters.

[0013] This steel sheet uncoiling device for steel pipe processing allows the collar to be easily placed on the outside of the protrusion by holding the handle rod. The limiting strip is inserted into the limiting groove, thus limiting the collar and allowing it to rotate with the shaft. At the same time, the baffle is pressed against the side of the steel coil by the elastic force of the telescopic rod, thereby limiting the side of the steel coil and preventing it from loosening or shifting.

[0014] This steel sheet uncoiling device for steel pipe processing drives the main bevel gear to rotate by turning the rotating rod. This, in turn, drives the screw to rotate through the bevel gear that meshes with the main bevel gear. As the screw rotates inside the cross clamp, it moves the cross clamp out of the protrusion and inserts the cross clamp into the cross clamp slot, thus limiting the installation of the collar. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the transmission support structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the steel coil side limiting structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the locking and limiting structure of this utility model.

[0019] In the diagram: 1. Bracket; 2. Mounting plate; 3. Rotating shaft; 4. Support side; 5. Side limiting assembly; 6. Locking limiting assembly; 7. Hydraulic pipe; 8. Oil guide pipe; 9. Piston slider; 10. Support rod; 11. Compression spring; 12. Collar; 13. Limiting groove; 14. Limiting strip; 15. Vertical plate; 16. Telescopic rod; 17. Baffle; 18. Grip rod; 19. Cross slot; 20. Cross lever; 21. Screw; 22. Driven bevel gear; 23. Rotating rod; 24. Main bevel gear. Detailed Implementation

[0020] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 A steel sheet uncoiling device for steel pipe processing includes a support 1, an mounting plate 2 fixedly installed on the top of the support 1, a rotating shaft 3 rotatably connected to the center of the mounting plate 2, support edges 4 arranged in an array on the outer side of the rotating shaft 3 for supporting the inner wall of the steel coil from the inside out, a transmission component for driving the support edges 4 to rise and fall inside the rotating shaft 3, a protrusion on one side of the front of the rotating shaft 3, a side limiting component 5 for limiting the side of the steel coil arranged on the outer side of the protrusion, and a locking limiting component 6 for limiting the side limiting component 5 inside the protrusion.

[0023] Please see Figure 2The transmission assembly includes a hydraulic pipe 7 fixedly installed inside the rotating shaft 3. One end of the hydraulic pipe 7 is fixedly connected to an oil guide pipe 8. The end of the oil guide pipe 8 is connected to a hydraulic cylinder. A support cylinder is fixedly installed on the outer side of the hydraulic pipe 7 corresponding to the support edge 4 array. The support cylinder is slidably connected inside the piston slider 9. A support rod 10 is fixedly installed between the piston slider 9 and the support edge 4. A compression spring 11 is sleeved on the outer side of the support rod 10. The hydraulic cylinder squeezes the oil from the end of the piston slider 9, so that the oil is squeezed into the hydraulic pipe 7, and then into the support cylinder to push the piston slider 9. Therefore, the support edge 4 can be moved outward by the support rod 10, so that it can be supported and positioned from inside the steel coil. It can be used for steel coils with different inner diameters. At the same time, the compression spring 11 is stretched to facilitate subsequent descent and reset.

[0024] Please see Figure 3 The side limiting component 5 includes a collar 12 sleeved on the outside of the protrusion. A limiting groove 13 is opened on the inner side of the collar 12. A limiting strip 14 is fixedly installed on the outside of the protrusion corresponding to the limiting groove 13. The limiting groove 13 inside the collar 12 is sleeved on the outside of the limiting strip 14. Four sets of edge guards for limiting the side of the steel coil are fixedly installed on the outer side of the collar 12. When the collar 12 is installed on the outside of the protrusion, the limiting strip 14 will be inserted into the limiting groove 13, which will limit the collar 12 and allow the collar 12 to rotate with the rotating shaft 3. The edge guards supported on the side can limit the side of the steel coil and prevent the steel coil from loosening.

[0025] Please see Figure 3 The edge guard includes a vertical plate 15 fixedly installed on the outside of the collar 12. A telescopic rod 16 is fixedly installed on one side of the back of the vertical plate 15. A baffle 17 is fixedly installed on one end of the back of the telescopic rod 16. The baffle 17 presses against the side of the steel coil under the elastic force of the telescopic rod 16. Two sets of grips 18 are symmetrically fixedly installed on one side of the front of the collar 12. A cross groove 19 is opened on the inner wall of the collar 12 corresponding to the locking and limiting component 6. The collar 12 can be easily gripped and taken out through the grips 18 on both sides, which facilitates installation and disassembly.

[0026] Please see Figure 4The locking and limiting component 6 includes a cross-shaped locking rod 20 that is slidably inserted into the inside of the protrusion. A screw 21 is screwed into the inside of the cross-shaped locking rod 20, and the screw 21 is rotatably connected inside the protrusion. A driven bevel gear 22 is fixedly installed at the end of the screw 21 near the center. A rotating rod 23 is rotatably connected to the center of the inside of the protrusion. A knob is fixedly installed at the front end of the rotating rod 23, and a support rod is fixedly installed on the outer side of the knob. The rotating rod 23 can be easily rotated by turning the support rod. A main bevel gear 24 is fixedly installed at the end of the rotating rod 23 located in the center of the protrusion, and the main bevel gear 24 and the driven bevel gear 22 are meshed. By turning the rotating rod 23, the main bevel gear 24 is rotated, which in turn drives the driven bevel gear 22 to rotate. Therefore, the screw 21 will rotate inside the cross-shaped locking rod 20, which will then move the cross-shaped locking rod 20 out of the protrusion and insert it into the cross-shaped locking groove 19, thereby limiting the installation of the collar 12.

[0027] In use, the steel coil is first lifted by a crane, then pushed to fit on the outside of the rotating shaft 3. Then, the hydraulic cylinder is started to squeeze the oil from the end of the piston slider 9, so that the oil is squeezed into the oil pressure pipe 7, and then into the support cylinder and pushes the piston slider 9 to move. So the support rod 10 can drive the support side 4 to move outward and press tightly against the inner wall of the steel coil, thus supporting and positioning from inside the steel coil.

[0028] Then, by holding the handles 18 on both sides, the collar 12 can be easily put on the outside of the protrusion, which will cause the limiting strip 14 to be inserted into the limiting groove 13, thus limiting the collar 12 and allowing the collar 12 to rotate with the rotating shaft 3. At the same time, the baffle 17 will press against the side of the steel coil under the elastic force of the telescopic rod 16, thus limiting the side of the steel coil.

[0029] At the same time, by turning the rotating rod 23, the main bevel gear 24 is driven to rotate, which in turn drives the secondary bevel gear 22 to rotate. This causes the screw 21 to rotate inside the cross-shaped retaining rod 20, which in turn causes the cross-shaped retaining rod 20 to move out of the protrusion and be inserted into the cross-shaped retaining groove 19, thereby limiting the installation of the collar 12.

[0030] In summary, the steel sheet uncoiling device for steel pipe processing squeezes oil into the hydraulic pipe 7, which in turn forces the oil into the support cylinder. This pushes the piston slider 9 to move outward, which in turn drives the support side 4 to move outward and press tightly against the inner wall of the steel coil via the support rod 10. This allows for support and positioning from inside the steel coil and is applicable to positioning steel coils with different inner diameters.

[0031] By holding the handle 18, the collar 12 can be picked up and easily put on the outside of the protrusion. The limiting strip 14 will be inserted into the limiting groove 13, thus limiting the collar 12 and allowing the collar 12 to rotate with the rotating shaft 3. At the same time, the baffle 17 will press against the side of the steel coil under the elastic force of the telescopic rod 16, thereby limiting the side of the steel coil and preventing the steel coil from loosening or shifting.

[0032] Twisting the rotating rod 23 will drive the main bevel gear 24 to rotate, which in turn will drive the screw 21 to rotate through the bevel gear 22 that meshes with the main bevel gear 24. As the screw 21 rotates inside the cross-shaped retaining rod 20, it will move the cross-shaped retaining rod 20 out of the protrusion and insert it into the cross-shaped retaining groove 19, thereby limiting the installation of the collar 12.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A steel sheet uncoiling device for steel pipe processing, comprising a support (1), characterized in that: The top of the bracket (1) is fixedly mounted with an installation plate (2), and the center of the installation plate (2) is rotatably connected to a rotating shaft (3). The outer side of the rotating shaft (3) is provided with support edges (4) for supporting the inner wall of the steel coil from the inside out. The inside of the rotating shaft (3) is provided with a transmission component for driving the support edges (4) to rise and fall. The front side of the rotating shaft (3) has a protrusion. The outer side of the protrusion is provided with a side limiting component (5) for limiting the side of the steel coil. The inside of the protrusion is provided with a locking limiting component (6) for limiting the side limiting component (5).

2. The steel sheet uncoiling device for steel pipe processing according to claim 1, characterized in that: The transmission assembly includes a hydraulic pipe (7) fixedly installed inside the rotating shaft (3). One end of the hydraulic pipe (7) is fixedly connected to an oil guide pipe (8). The end of the oil guide pipe (8) is connected to a hydraulic cylinder. Support cylinders are fixedly installed on the outer side of the hydraulic pipe (7) in an array corresponding to the support edge (4). The support cylinders are slidably connected inside the piston slider (9). A support rod (10) is fixedly installed between the piston slider (9) and the support edge (4). A compression spring (11) is sleeved on the outer side of the support rod (10).

3. The steel sheet uncoiling device for steel pipe processing according to claim 1, characterized in that: The side limiting component (5) includes a collar (12) sleeved on the outside of the protrusion. A limiting groove (13) is opened on the inner side of the collar (12). A limiting strip (14) is fixedly installed on the outside of the protrusion corresponding to the limiting groove (13). The limiting groove (13) in the collar (12) is sleeved on the outside of the limiting strip (14). Four sets of edge guards for limiting the side of the steel coil are fixedly installed on the outer side of the collar (12).

4. The steel sheet uncoiling device for steel pipe processing according to claim 3, characterized in that: The edge guard includes a vertical plate (15) fixedly installed on the outside of the collar (12). A telescopic rod (16) is fixedly installed on one side of the back of the vertical plate (15). A baffle (17) is fixedly installed on one end of the back of the telescopic rod (16), and the baffle (17) abuts against the side of the steel coil under the action of the elastic force of the telescopic rod (16).

5. The steel sheet uncoiling device for steel pipe processing according to claim 4, characterized in that: Two sets of grips (18) are symmetrically fixed on one side of the front of the collar (12), and a cross groove (19) is opened on the inner wall of the collar (12) corresponding to the locking and limiting component (6).

6. The steel sheet uncoiling device for steel pipe processing according to claim 5, characterized in that: The locking and limiting assembly (6) includes a cross lever (20) that is slidably inserted into the inside of the protrusion. A screw (21) is screwed into the inside of the cross lever (20), and the screw (21) is rotatably connected inside the protrusion. A driven bevel gear (22) is fixedly installed at one end of the screw (21) near the center. A rotating rod (23) is rotatably connected to the center inside the protrusion. A main bevel gear (24) is fixedly installed at one end of the rotating rod (23) located inside the center of the protrusion, and the main bevel gear (24) and the driven bevel gear (22) are meshed together.

7. The steel sheet uncoiling device for steel pipe processing according to claim 6, characterized in that: A knob is fixedly installed on one end of the front of the rotating rod (23), and a support rod is fixedly installed on the outer side of the knob.