Winding mechanism capable of reducing internal stress of steel plate

Abstract

The invention discloses a winding mechanism capable of reducing the internal stress of a steel plate, and relates to the technical field of steel plate winding. When an uneven steel plate enters a clamping area, a clamping plate is extruded and expanded, and a resistance block is made to be away from a conductive core through linkage of a connecting rod, a heat insulation plate and an insulation pressing plate; the current passing through the electromagnetic heating coil is reversely increased when the resistance is reduced in a closed circuit, so that the output power of the electromagnetic heating coil is increased, the heat treatment degree of the steel plate in the uneven area is improved, and the softening degree of the steel plate in the area is improved; when the steel plate is flattened, small-stress reset deformation is generated more easily under the action of winding tension and reset clamping force of the clamping plates on the two sides, finally, the uneven steel plate in the clamping area is gradually flattened and reset, and internal stress derived from the reset deformation of the steel plate in the flattening process is small; and the internal stress generated by flattening the steel plate and the internal stress superposition amount and accumulation amount during rolling of the steel plate are weakened, and flexible rolling of the steel plate is further promoted.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate coiling, and in particular to a coiling mechanism capable of reducing internal stress of a steel plate. Background Art

[0002] Steel plate coiling mechanism is widely used in the field of steel plate processing as the basic transportation and storage method of thin strip steel plates. On the one hand, the coiling of thin steel plates can be used as a way of transporting and storing plates. On the other hand, it is also the terminal output equipment of steel plate production and undertakes the task of conveying and transferring steel plates on the entire production line.

[0003] For example, a zinc-aluminum-magnesium steel plate production and winding device with publication number CN222159215U includes a supporting bottom plate and a control box: a winding control mechanism is arranged inside the control box, a portable installation mechanism is arranged on the side of the winding control mechanism, and a resistance support mechanism is arranged on the side of the portable installation mechanism. When the zinc-aluminum-magnesium steel plate production and winding device is in use, the characteristic that the spring will simultaneously generate a reverse resistance force when subjected to a resistance force is utilized, so that the device can utilize the reverse force of the spring in conjunction with the structural transmission so that the device can automatically elastically resist and reset the misaligned and wound zinc-aluminum-magnesium steel plate, and then the design of resistance reset of the zinc-aluminum-magnesium steel plate in the early stage of its displacement enables the device to better complete the centering winding of the zinc-aluminum-magnesium steel plate, and the overall structure is simple and the practical effect is good.

[0004] The fundamental reason for the misaligned winding of steel plates on the winding roller is that the steel plates are forced to deform during processing or guiding on the front-end production line, resulting in regional release of internal stress. Although the steel plate is reset through the design of resistance reset, generally speaking, as long as it involves forced deformation of steel, it will inevitably cause more or less internal stress in the steel. The most obvious is the winding of steel strips. The internal stress is relatively concentrated when the steel strips are wound. Therefore, once there is a problem with the winding, the steel strip will instantly burst out with a highly destructive internal stress release phenomenon. For example, in some special cases, after the winding stops, the steel strip will automatically unwind quickly under the impetus of internal stress, resulting in amazing destructive power and posing a greater safety hazard.

[0005] For steel plate coiling, the forced bending angle of the steel plate is the same after coiling, but the bending span (circumference) of the inner and outer layers of the steel plate is gradually increasing. Therefore, at the initial stage of coiling, the bending span (circumference) of the steel plate is the smallest but the angle remains unchanged, so the internal stress generated is more concentrated. This is also the reason why the steel plate is most likely to "bounce" and cause the roll to fall off at the initial stage of coiling. As the coiling thickness increases, the bending angle of the steel plate remains unchanged but the span gradually increases, and the coiling becomes smoother.

[0006] In addition, due to process limitations, annealing can only be carried out before coiling and cannot be synchronized with coiling. Moreover, there are multiple guiding and forced deformations in multiple processing steps in the front-end production line of coiling, which will cause certain internal stresses in the steel plate before coiling. Uneven local release of internal stresses will occur in some weak production or conveying links, affecting the flatness of the steel plate. Eventually, all internal stresses generated in any form will be retained and superimposed in the coiled steel coil after coiling. Once the stress is distorted and released (similar to the high-energy bouncing phenomenon after a spring is compressed and then released), it will cause great destructive damage to the surrounding environment. Moreover, for the coiling mechanism, the gradually superimposed internal stresses in the steel strip will generate a large coiling resistance, and a greater load is required to achieve the coiling of the steel strip.

[0007] Therefore, the present invention proposes a steel plate coiling mechanism that can perform "small annealing" synchronously with coiling and perform pre-bending treatment based on the coiling thickness to reduce the internal stresses gradually accumulated during the coiling of the steel strip. Summary of the Invention

[0008] The technical solution of the present invention aims at the technical problem that the prior art solution is too single, and provides a solution significantly different from the prior art. Specifically, the purpose of the present invention is to provide a coiling mechanism that can reduce the internal stresses of the steel plate to solve the problem proposed in the above background technology that multiple guiding and forced deformations in multiple processing steps in the front-end production line of coiling will cause certain internal stresses in the steel plate before coiling, uneven local release of internal stresses will occur in some weak production or conveying links, affecting the flatness of the steel plate, and eventually all internal stresses generated in any form will be retained and superimposed in the coiled steel coil after coiling. Once the stress is distorted and released, it will cause great destructive damage to the surrounding environment. Moreover, for the coiling mechanism, the gradually superimposed internal stresses in the steel strip will generate a large coiling resistance, and a greater load is required to achieve the coiling of the steel strip.

[0009] To achieve the above object, the present invention provides the following technical solution: A coiling mechanism that can reduce the internal stresses of the steel plate, including a workbench, and further including clamping plates symmetrically attached to the upper and lower surfaces of the steel plate for detecting the flatness of the steel plate, electromagnetic heating coils that can identify the clamping degree of the clamping plates and adaptively adjust the current magnitude to control the heat treatment temperature, and a pre-bending assembly that automatically adjusts the pre-bending arc based on the coiling thickness. The electromagnetic heating coils are wound in a spiral around the outside of the two clamping plates, and a rectifying cavity for adaptively adjusting the resistance value is installed between the closed circuits at both ends of the electromagnetic heating coils. A coiling assembly is installed on the upper surface of the workbench.

[0010] Preferably, a first guiding roller and a second guiding roller are sequentially installed on the upper surface of the workbench along the coiling direction, and the steel plate is wound around the coiling roller of the coiling assembly after being guided by the first guiding roller and the second guiding roller in sequence.

[0011] Preferably, tripods with their lower ends fixed on the workbench are symmetrically installed on both sides of the steel plate, and a circular steel plate supporting roller for pre-supporting is installed between the two upper ends of the two tripods.

[0012] Preferably, the pre-bending assembly includes a pressing roller, a T-shaped plate, side plates, an inner pushing roller and an outer pulling roller. The pressing roller is externally attached to the coiled steel plate. Both ends of the pressing roller are respectively connected with a T-shaped plate, and a side plate is fixed to the upper end of each T-shaped plate. The side plate consists of two parts: a lower inclined rod and an upper flat plate. Each lower inclined rod slidably penetrates through the adjacent tripod, and the inner pushing roller and the outer pulling roller are successively arranged from inside to outside along the inclined direction at the upper ends of the two upper flat plates.

[0013] Preferably, the steel plate penetrates through the gap between the inner pushing roller and the outer pulling roller, and the gaps among the two circular steel plate supporting rollers, the inner pushing roller and the outer pulling roller form a pre-supporting circular system for the steel plate.

[0014] Preferably, the outer wall of the lower inclined rod is wound with a first spring. One end of the first spring is welded to the outer wall of the end of the upper flat plate, and the other end of the first spring is fixed to the outer wall of the tripod.

[0015] Preferably, connecting rods are fixed at the four corners on the outer surface of each clamping plate. The outer ends of the four connecting rods respectively pass through the gaps of the electromagnetic heating coils and are jointly fixedly connected to a heat insulation plate covering the outside of the clamping plate in parallel. Four convex plates are respectively fixed on the sides of the two heat insulation plates. Two convex plates located at the same position of the two heat insulation plates form a group. A column with its bottom end fixed on the upper surface of the workbench slidably penetrates through the inside of the two convex plates in the same group.

[0016] Preferably, the outer wall of the column is symmetrically wound with a second spring. One end of the second spring is welded to the surface of a convex block fixedly arranged on the outer wall of the column, and the other end of the second spring is fixed to the outer surface of the convex plate.

[0017] The clamping plate is made of a non-metallic material, and the front end of the clamping plate facing the coiling direction is designed as an outward-expanded arc.

[0018] Preferably, a power controller is installed on the closed circuit of the electromagnetic heating coil. The rectifying cavity is made of an insulating material, and the conducting core of the closed circuit of the electromagnetic heating coil is exposed at the center of the rectifying cavity.

[0019] Resistance blocks are symmetrically attached to the upper and lower surfaces of the conducting core inside the rectifying cavity. One side of the resistance block away from the conducting core is fixedly connected with an insulating pressing plate. The insulating vertical rod at the center of the insulating pressing plate slidably penetrates through the rectifying cavity and is fixedly connected to the surface of an extension plate on one side of the heat insulation plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In the early stage of winding, since the thickness of the steel plate on the winding roller is relatively thin, the degree of downward extrusion of the pressure roller is small. Therefore, under the action of the first spring, the pressure roller will be close to the bottom of the winding steel plate and lift the inner push roller and the outer pull roller to the highest point. At this time, the angle of the steel plate pre-bent through the gap between the front end rounding roller, the inner push roller and the outer pull roller and the rear end rounding roller reaches the highest point to adapt to the subsequent winding with a smaller span. As the winding thickness increases, the span of the steel plate winding becomes larger and larger, and its pre-bending angle also needs to be gradually smoothed to prevent excessive pre-bending from generating additional winding stress. At this time, the winding steel plate will gradually push the pressure roller obliquely downward and drive the inner push roller and the outer pull roller to fall adaptively, so as to achieve the effect of gradually smoothing the pre-bending angle with the winding thickness, thereby realizing the adaptive adjustment of the pre-bending arc following the winding thickness to disperse and weaken the internal stress accumulated by the forced deformation when the steel plate is rolled to the greatest extent;

[0022] 2. When an uneven steel plate passes through the area stably clamped by the upper and lower clamps, the upper and lower clamps will be stretched apart. If the top of the steel plate is uneven, the upper clamp in the clamping area will be squeezed and expanded and push the heat insulation plate outward through the connecting rod. At the same time, the heat insulation plate drives the outer end of the corresponding insulating pressure plate to gradually move away from the rectifier cavity through the extension plate on the side, so that the corresponding insulating pressure plate drives the corresponding resistor block away from the conductive core at the center. When the output current of the power controller remains unchanged, when the resistance in the closed circuit decreases, the current passing through the electromagnetic heating coil will increase in the reverse direction, and in the electromagnetic heating line When the number of turns of the coil winding remains unchanged, the output power and heating amount of the electromagnetic heating coil will be increased, thereby increasing the degree of heat treatment of the steel plate in the uneven area and then improving the "softening" degree of the steel plate in this area, making it easier to produce a reset deformation with a smaller stress under the action of the winding tension and the reset clamping force of the clamping plates on both sides, and finally making the uneven steel plate in the clamping area gradually flat and reset, and the internal stress derived from the reset deformation of the steel plate during flattening is smaller, which weakens the superposition and accumulation of the internal stress generated by the flat steel plate and the internal stress when the steel plate is rolled, further promoting the "smooth" rolling of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the first stereogram of the present invention.

[0024] Figure 2 This is the second stereogram of the present invention.

[0025] Figure 3 This is the first stereoscopic view of the present invention after the upper splint is removed.

[0026] Figure 4 This is a second stereoscopic view of the present invention after the upper splint is removed.

[0027] Figure 5 It is a three-dimensional diagram after the steel plate of the present invention is removed.

[0028] Figure 6 This is a perspective view of the pre-bending assembly of the present invention.

[0029] Figure 7 For the present invention Figure 2 The enlarged schematic view of the structure at position A in the figure.

[0030] Figure 8 This is a front sectional view of the rectifying cavity of the present invention.

[0031] In the figure: 1, workbench; 11, first guiding roller; 12, second guiding roller; 13, winding assembly; 2, tripod; 21, circular supporting roller; 3, pressing roller; 31, T-shaped plate; 32, side plate; 33, first spring; 34, inner pushing roller; 35, outer pulling roller; 4, clamping plate; 41, connecting rod; 42, heat insulation plate; 43, convex plate; 44, column; 45, second spring; 5, electromagnetic heating coil; 51, power controller; 6, rectifying cavity; 61, insulating pressing plate; 62, resistance block. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 8 , the present invention provides a technical solution: a winding mechanism capable of reducing the internal stress of steel plates, including a workbench 1, and further including clamping plates 4 symmetrically attached to the upper and lower surfaces of the steel plate for detecting the flatness of the steel plate, an electromagnetic heating coil 5 capable of identifying the clamping degree of the clamping plates 4 and adaptively adjusting the current magnitude to control the heat treatment temperature, and a pre-bending assembly for automatically adjusting the pre-bending arc based on the winding thickness. The electromagnetic heating coil 5 is wound around the outside of the two clamping plates 4 in a spiral posture, and a rectifying cavity 6 for adaptively adjusting the resistance value is installed between the closed circuits at both ends of the electromagnetic heating coil 5. A winding assembly 13 is installed on the upper surface of the workbench 1.

[0034] The first guiding roller 11 and the second guiding roller 12 are sequentially installed on the upper surface of the workbench 1 along the winding direction, and the steel plate is wound around the winding roller of the winding assembly 13 after being guided by the first guiding roller 11 and the second guiding roller 12 in sequence.

[0035] Tripods 2 with their lower ends fixed to the workbench 1 are symmetrically installed on both sides of the steel plate, and circular supporting rollers 21 for pre-supporting and rounding the steel plate are installed between the two upper ends of the two tripods 2.

[0036] The pre-bending assembly includes a pressing roller 3, a T-shaped plate 31, side plates 32, an inner pushing roller 34 and an outer pulling roller 35. The pressing roller 3 is disposed in contact with the outer surface of the coiled steel plate. The two ends of the pressing roller 3 are respectively connected with T-shaped plates 31, and side plates 32 are fixed to the upper ends of each T-shaped plate 31. The side plate 32 consists of a lower inclined rod and an upper flat plate. The lower inclined rod of each side plate 32 slidably penetrates through the adjacent tripod 2, and the inner pushing roller 34 and the outer pulling roller 35 are sequentially arranged on the upper ends of the two upper flat plates from inside to outside along the inclined direction.

[0037] The steel plate penetrates through the gap between the inner pushing roller 34 and the outer pulling roller 35, and the gaps among the two circular supporting rollers 21, the inner pushing roller 34 and the outer pulling roller 35 together form a pre-rounding system for the steel plate.

[0038] The outer wall of the lower inclined rod is wound with a first spring 33. One end of the first spring 33 is welded to the outer wall of the end of the upper flat plate, and the other end of the first spring 33 is fixed to the outer wall of the tripod 2.

[0039] Link rods 41 are fixed at the four corners on the outer surface of each clamping plate 4. The outer ends of the four link rods 41 respectively pass through the gaps of the electromagnetic heating coils 5 and are jointly fixedly connected with a heat insulation plate 42 that covers the outside of the clamping plate 4 in parallel. Four convex plates 43 are respectively fixed on the sides of the two heat insulation plates 42. Two convex plates 43 at the same positions of the two heat insulation plates 42 form a group. A column 44 with the bottom end fixed to the upper surface of the workbench 1 slidably penetrates through the inside of the two convex plates 43 in the same group.

[0040] The outer wall of the column 44 is symmetrically wound with a second spring 45. One end of the second spring 45 is welded to the surface of a convex block fixedly arranged on the outer wall of the column 44, and the other end of the second spring 45 is fixed to the outer surface of the convex plate 43.

[0041] The clamping plate 4 is made of a non-metallic material, and the front end of the clamping plate 4 facing the coiling direction is designed as an outward-expanded arc.

[0042] A power controller 51 is installed on the closed circuit of the electromagnetic heating coil 5. The rectifying cavity 6 is made of an insulating material, and the conducting core of the closed circuit of the electromagnetic heating coil 5 is exposed at the center of the rectifying cavity 6.

[0043] Resistance blocks 62 are symmetrically attached to the upper and lower surfaces of the conducting core inside the rectifying cavity 6. One side of the resistance block 62 away from the conducting core is fixedly connected with an insulating pressing plate 61. The insulating vertical rod at the center of the insulating pressing plate 61 slidably penetrates through the rectifying cavity 6 and is fixedly connected with the surface of an extension plate on one side of the heat insulation plate 42.

[0044] Working principle: When using the coiling mechanism that can reduce the internal stress of the steel plate, first start the coiling assembly 13 and the electromagnetic heating coil 5. The coiling assembly 13 drives the thin steel plate to pass through the first guiding roller 11, the electromagnetic heating coil 5, the second guiding roller 12 and the pre-bending assembly in sequence at a constant slow speed for coiling. And the electromagnetic heating coil 5 generates a constant heating effect on the steel plate passing through the center under the action of the power controller 51 with a constant current.

[0045] After the steel plate is subjected to intermittent constant heating, it will be "softened" to a certain extent. The principle is similar to annealing. The "softening" will weaken the internal stress generated by the front-end guiding transmission and the forced deformation during the processing of the front-end production line to a certain extent, which is helpful for subsequent pre-bending and coiling. Immediately afterwards, the steel plate after stress elimination by heating enters the pre-bending area. After passing through the gap between the front-end circular supporting roller 21, the inner pushing roller 34 and the outer pulling roller 35 and the pre-bending of the rear-end circular supporting roller 21 in sequence, it smoothly enters the coiling stage. During coiling, the coiling angle is constant, but at the initial stage of coiling, the bending span required for coiling the steel plate is relatively small, and the internal stress is relatively concentrated. Therefore, the maximum pre-bending amplitude is required to disperse the stress concentrated during small-span coiling, so as to weaken the internal stress concentrated during small-span coiling: Specifically, at the initial stage of coiling, since the thickness of the steel plate on the coiling roller is relatively thin, the degree of downward extrusion of the pressing roller 3 is relatively small. Therefore, under the action of the first spring 33, the pressing roller 3 will closely adhere to the lower part of the coiled steel plate and push the inner pushing roller 34 and the outer pulling roller 35 to the highest point. At this time, the angle of the steel plate pre-bent through the gap between the front-end circular supporting roller 21, the inner pushing roller 34 and the outer pulling roller 35 and the rear-end circular supporting roller 21 reaches the highest to adapt to the subsequent coiling with a smaller span. As the coiling thickness increases, the coiling span of the steel plate becomes larger and larger, and its pre-bending angle also needs to gradually flatten to prevent excessive pre-bending from generating additional coiling stress. At this time, the coiled steel plate will gradually push the pressing roller 3 obliquely downward and drive the inner pushing roller 34 and the outer pulling roller 35 to adaptively drop, so as to achieve the effect of gradually flattening the pre-bending angle as the coiling thickness increases, thereby realizing the adaptive adjustment of the pre-bending arc following the coiling thickness to disperse and weaken the internal stress concentrated by the forced deformation during steel plate coiling to the greatest extent.

[0046] In addition, multiple guiding and forced deformation in multiple processing steps in the front-end production line of coiling will cause certain internal stresses in the steel plate before coiling. Uneven local release of internal stresses will occur in some weak production or conveying links, affecting the flatness of the steel plate. When the uneven steel plate passes through the area stably clamped by the upper and lower clamping plates 4, it will push the upper and lower clamping plates 4 apart. When the upper or lower part of the steel plate is uneven, the corresponding upper clamping plate 4 or lower clamping plate 4 will be adaptively pushed open by the resistance. Assuming that the upper part of the steel plate is uneven, the upper clamping plate 4 in the clamping area will be squeezed and expanded and push the heat insulation plate 42 outward through the connecting rod 41. At the same time, the heat insulation plate 42 drives the outer end of the corresponding insulating pressing plate 61 to gradually move away from the rectifying cavity 6 through the extension plate on the side.

[0047] As Figure 8 shown, when the outer end of the insulating pressing plate 61 gradually moves away from the rectifying cavity 6, the corresponding insulating pressing plate 61 will also drive the corresponding resistance block 62 to move away from the conducting core at the center. When the output current of the power controller 51 remains unchanged, when the resistance in the closed circuit decreases, the current passing through the electromagnetic heating coil 5 will increase in the reverse direction. And when the number of turns of the electromagnetic heating coil 5 remains unchanged, the output power and heating amount of the electromagnetic heating coil 5 will increase, thereby increasing the heat treatment degree of the uneven area of the steel plate and then enhancing the "softening" degree of the steel plate in this area. It is more likely to undergo forced reset deformation with smaller stresses under the action of the coiling tension and the reset clamping force of the two side clamping plates 4. Eventually, the uneven steel plate in the clamping area gradually returns to a flat state, and the internal stress derived from the reset deformation of the steel plate when it is flat is small, avoiding the superposition and accumulation of the internal stress generated by the flat steel plate and the internal stress during steel plate coiling, and further promoting the "compliant" coiling of the steel plate.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A winding mechanism capable of reducing internal stress of a steel plate, comprising a workbench (1), characterized in that: It also includes clamping plates (4) symmetrically attached to the upper and lower surfaces of the steel plate for detecting the flatness of the steel plate, an electromagnetic heating coil (5) capable of identifying the degree of clamping of the clamping plates (4) and adaptively adjusting the current to control the heat treatment temperature, and a pre-bending component that automatically adjusts the pre-bending arc based on the winding thickness, wherein the electromagnetic heating coil (5) is wound in a spiral posture around the outside of the two clamping plates (4), and a rectifier cavity (6) for adaptively adjusting the resistance value is installed between the closed circuits at both ends of the electromagnetic heating coil (5), and a winding component (13) is installed on the upper surface of the workbench (1).

2. A winding mechanism capable of reducing internal stress of a steel plate according to claim 1, characterized in that: The upper surface of the workbench (1) is provided with a first guide roller (11) and a second guide roller (12) in sequence along the winding direction, and the steel plate is guided by the first guide roller (11) and the second guide roller (12) in sequence and then wound around the winding roller of the winding assembly (13).

3. The winding mechanism capable of reducing internal stress of a steel plate according to claim 1, characterized in that: Tripods (2) with their lower ends fixed on a workbench (1) are symmetrically mounted on both sides of the steel plate, and rounding rollers (21) for pre-supporting the round steel plate are mounted between the two upper ends of the two tripods (2).

4. A winding mechanism capable of reducing internal stress of a steel plate according to claim 3, characterized in that: The pre-bending assembly comprises a pressure roller (3), a T-shaped plate (31), a side plate (32), an inner push roller (34) and an outer pull roller (35), and the outer side of the rolled steel plate is fitted with a pressure roller (3), the two ends of the pressure roller (3) are respectively connected to the T-shaped plates (31), and the upper end of each T-shaped plate (31) is fixed with a side plate (32), the side plate (32) is composed of a lower inclined rod and an upper flat plate, and each lower inclined rod slides through a nearby tripod (2), and the upper ends of the two upper flat plates are sequentially provided with an inner push roller (34) and an outer pull roller (35) along the inclined direction from the inside to the outside.

5. A winding mechanism capable of reducing internal stress of a steel plate according to claim 4, characterized in that: The steel plate passes through the gap between the inner push roller (34) and the outer pull roller (35), and the two rounding rollers (21) and the gap between the inner push roller (34) and the outer pull roller (35) constitute a pre-rounding system for the steel plate.

6. A winding mechanism capable of reducing internal stress of a steel plate according to claim 4, characterized in that: A first spring (33) is wound around the outer wall of the lower oblique rod, one end of the first spring (33) is welded to the outer wall of the end of the upper flat plate, and the other end of the first spring (33) is fixed to the outer wall of the tripod (2).

7. The winding mechanism capable of reducing internal stress of a steel plate according to claim 1, characterized in that: Connecting rods (41) are fixed at the four corners on the outer surface of each of the clamping plates (4), and the outer ends of the four connecting rods (41) respectively pass through the gaps of the electromagnetic heating coils (5) and are fixedly connected to a heat insulation plate (42) parallel to and covering the outer side of the clamping plates (4). Four convex plates (43) are respectively fixed to the sides of the two heat insulation plates (42), and two convex plates (43) located at the same position of the two heat insulation plates (42) form a group, and the interiors of the two convex plates (43) in the same group are slidably penetrated by a column (44) whose bottom end is fixed to the upper surface of the workbench (1).

8. The winding mechanism capable of reducing internal stress of a steel plate according to claim 7, characterized in that: A second spring (45) is symmetrically wound around the outer wall of the column (44), one end of the second spring (45) is welded to the surface of a protrusion fixedly arranged on the outer wall of the column (44), and the other end of the second spring (45) is fixed to the outer surface of the protruding plate (43); The clamping plate (4) is made of non-metallic material, and the front end of the clamping plate (4) facing the winding direction is designed to be an outward-expanding arc.

9. The winding mechanism capable of reducing internal stress of a steel plate according to claim 7, characterized in that: A power controller (51) is installed on the closed circuit of the electromagnetic heating coil (5), the rectifying cavity (6) is made of insulating material, and the conductive core of the closed circuit of the electromagnetic heating coil (5) is exposed at the center of the rectifying cavity (6); The upper and lower surfaces of the conductive core inside the rectifying cavity (6) are symmetrically fitted with resistance blocks (62), and the side of the resistance block (62) away from the conductive core is fixedly connected to an insulating pressure plate (61), and the insulating vertical rod at the center of the insulating pressure plate (61) slides through the rectifying cavity (6) and is fixedly connected to the surface of the extension plate on one side of the insulation plate (42).

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