A steel coil unwinding device for spiral welded pipe production

Abstract

The utility model discloses a steel coil unwinding device for spiral welded pipe production, including two interval settings frame, two frames can slide along the axial direction of steel coil, moving guide rail, set up between two frames and along the length direction extension setting after the steel coil unrolling, the unwinding mechanism, including the moving seat for bearing the steel coil and the unwinding assembly for driving the steel coil rotation to make it gradually unrolling, two limiting mechanisms, set up respectively on two frames, and limiting mechanism includes driver, the rotating shaft driven rotation by driver, the limiting piece that can extend into the steel coil to axial limit steel coil and be located the resistance plate of steel coil one end, and resistance plate can be under the movement of frame and contact steel coil one end face, and the reverse rotation of resistance plate is driven along the rotation direction of steel coil by the rotating shaft, to avoid the steel coil and scatter under the effect of self tension. The utility model has the advantages of avoiding the steel coil and scattering under the effect of self tension when unwinding, guaranteeing the stability of steel coil unwinding.

Description

Technical Field

[0001] This utility model relates to a steel coil uncoiling device for spiral welded pipe production, belonging to the technical field of steel pipe production equipment. Background Technology

[0002] Spiral welded pipe is a steel pipe made by rolling steel strip into a pipe blank at a certain spiral angle and then welding it. It is widely used in water supply projects, petrochemical industry, chemical industry, power industry and other fields. In the production process of spiral welded pipe, the first step is to unwind the coiled steel strip (coil), unfold the coil and send it into the welding pipe unit for processing.

[0003] In existing technologies, uncoiling machines are typically used to unwind coiled steel strips. However, during the uncoiling process, the steel coil is prone to excessive unwinding under its own tension, causing problems such as loosening between layers and disordered coiling. This not only affects production efficiency but also poses safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a steel coil unwinding device for spiral welded pipe production, which can prevent the steel coil from unwinding under its own tension and ensure the stability of the steel coil unwinding.

[0005] This utility model is achieved through the following technical solution.

[0006] A steel coil uncoiling device for spiral welded pipe production includes: Two spaced-apart machine bases, which are slidable along the axial direction of the steel coil; A movable guide rail is set between two machine bases and extends along the length of the unwound steel coil. The unwinding mechanism includes a movable seat for carrying a steel coil and an unwinding assembly for driving the steel coil to rotate so that it gradually unwinds. The movable seat is movably mounted on the movable guide rail along the length of the steel coil. Two limiting mechanisms are respectively installed on the two machine bases. Each limiting mechanism includes a driver, a rotating shaft driven by the driver, a limiting member that can extend into the steel coil to axially limit the steel coil, and a resistance plate located at one end of the steel coil. The resistance plate can contact the end face of the steel coil under the movement of the machine base. The limiting member is located on the side of the resistance plate close to the steel coil. The rotating shaft drives the resistance plate to rotate in the opposite direction of the rotation of the steel coil to prevent the steel coil from unraveling under its own tension.

[0007] As a further improvement of this utility model, the unwinding assembly includes two unwinding rollers rotatably disposed on the upper surface of the movable seat. The two unwinding rollers are spaced apart along the unwinding direction of the steel coil. The steel coil is supported on the surface of the movable seat between the two unwinding rollers. When the two unwinding rollers rotate, they drive the steel coil to rotate along its own axis.

[0008] As a further improvement of this utility model, the movable seat is also provided with a support limiting roller for contacting the surface of the steel coil. The support limiting roller is located on the other side of the unfolded steel coil and can apply radially inward pressure to the surface of the steel coil. The support limiting roller is rotatably mounted on the movable seat through a positioning frame.

[0009] As a further improvement of this utility model, the resistance plate has a resistance plane at one end near the steel coil, and the resistance plane is perpendicular to the axis of the steel coil.

[0010] As a further improvement of this utility model, the limiting member is fixedly connected to the resistance plane and coaxially arranged with the steel coil. Multiple limiting blocks are provided on the outer peripheral surface of the limiting member, and the limiting blocks have arc surfaces for contacting the inner wall of the steel coil.

[0011] As a further improvement of this utility model, each of the machine bases is provided with a base, and the base is provided with a slide rail for sliding the machine base and a drive component for driving the machine base to slide along the slide rail; the slide rail extends along the moving direction of the machine base, and the machine base is provided with at least one sliding member corresponding to the slide rail, and the sliding member is slidably connected to the slide rail.

[0012] As a further improvement of this utility model, the drive component is configured as a telescopic cylinder or a telescopic hydraulic cylinder.

[0013] As a further improvement of this utility model, the movable seat is either rolled or slidably mounted on the movable guide rail.

[0014] As a further improvement of this utility model, the unwinding roller is configured as an electric roller.

[0015] As a further improvement of this utility model, the rotating shaft is rotatably positioned on the machine base via a bearing.

[0016] The beneficial effects of this utility model are: 1. The resistance plate can contact the end face of the steel coil under the movement of the machine base, providing axial restraint force to the end face of the steel coil and preventing the steel coil from unwinding due to axial movement during the unwinding process. In addition, the driver drives the rotating shaft to rotate, and the rotating shaft drives the resistance plate connected to it to rotate in the opposite direction of the steel coil unwinding. The reverse rotation of the resistance plate provides a continuous reverse torque to the steel coil, effectively counteracting the effect of the steel coil's own tension and preventing the steel coil from unwinding excessively under its own tension, thereby achieving stable control of the steel coil unwinding process.

[0017] 2. The limiting component extends into the steel coil and provides axial limiting. Combined with the end face limiting of the resistance plate, it forms double protection to prevent the steel coil from accidentally coming off during the unwinding process, which greatly improves the stability of the steel coil unwinding. Attached Figure Description

[0018] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein: Figure 1 This is a schematic diagram of the structure of a steel coil uncoiling device for spiral welded pipe production according to this utility model; Figure 2 This is a schematic diagram of the limiting mechanism; Figure 3 This is a schematic diagram of the structure of the unwinding mechanism and the steel coil. Figure 4 This is a schematic diagram of the unwinding mechanism from a top-down view. Figure 5 This is a schematic diagram of the structure of the limiting component and the resistance plate. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0021] This embodiment provides a steel coil unwinding device for spiral welded pipe production, used to unwind the steel coil m before producing spiral welded pipe so that the steel coil m is flat and unfolded. (Refer to...) Figures 1-5The system includes two bases 1, a moving guide rail 2, a coil unwinding mechanism, and two limiting mechanisms 4. The two bases 1 are spaced apart along the axial direction of the steel coil m and slide along the axial direction of the steel coil m. The moving guide rail 2 is located between the two bases 1. The coil unwinding mechanism includes a moving seat 31 for supporting the steel coil m and a coil unwinding assembly for driving the steel coil m to rotate so that it gradually unwinds, thereby realizing unwinding. The moving seat 31 is movably mounted on the moving guide rail 2 along the length direction of the steel coil m, so that the steel coil m can be adjusted to an appropriate position by moving the moving seat 31.

[0022] Two limiting mechanisms 4 are respectively set on two machine bases 1 and are arranged symmetrically. The limiting mechanism 4 includes a driver 41, a rotating shaft 42 driven by the driver 41, a limiting member 43 that can extend into the steel coil m to axially limit the steel coil m, and a resistance plate 44 set at one end of the steel coil m. The driver 41 can be a motor. One end of the rotating shaft 42 is connected to the resistance plate 44. The resistance plate 44 can contact one end face of the steel coil m under the movement of the machine base 1. The limiting member 43 is set on the side of the resistance plate 44 close to the steel coil m. The rotating shaft 42 drives the resistance plate 44 to rotate in the opposite direction of the rotation of the steel coil m to prevent the steel coil m from spreading out under its own tension.

[0023] In this embodiment, the resistance plate 44 can contact the end face of the steel coil m under the movement of the base 1, providing axial constraint force to the end face of the steel coil m to prevent the steel coil m from unwinding due to axial movement. In addition, the driver 41 drives the rotating shaft 42 to rotate, and the rotating shaft 42 drives the resistance plate 44 connected to it to rotate in the opposite direction of the unwinding of the steel coil m. The reverse rotation of the resistance plate 44 provides a continuous reverse torque to the steel coil m, effectively counteracting the effect of the tension of the steel coil m itself, and preventing the steel coil m from unwinding excessively under its own tension, thereby achieving stable control of the unwinding process of the steel coil m.

[0024] In addition, the limiting member 43 extends into the inside of the steel coil m and provides axial limiting. Combined with the end face limiting of the resistance plate 44, it forms double protection to prevent the steel coil m from accidentally coming out during the unwinding process, which greatly improves the stability of the unwinding of the steel coil m.

[0025] More specifically, the unwinding assembly 32 includes two unwinding rollers 321 rotatably mounted on the upper surface of the movable base 31. The unwinding rollers 321 are higher than the upper surface of the steel coil m, and are spaced apart along the unwinding direction of the steel coil m. The steel coil m is supported on the surface of the movable base 31 between the two unwinding rollers 321, and the two unwinding rollers 321 contact the surface of the steel coil m. When the two unwinding rollers 321 rotate, friction causes the steel coil m to rotate along its own axis, thus achieving unwinding. The unwinding rollers 321 are electrically driven rollers, and their speed and direction are controlled by a control system. Furthermore, the electrically driven rollers have a motor installed inside to drive their own rotation, resulting in a smaller overall size of the unwinding rollers 321 and easier installation.

[0026] Furthermore, the movable base 31 is also equipped with a support and limiting roller 33 for contacting the surface of the steel coil m. The support and limiting roller has a certain height and is located on the other side of the unfolded steel coil m. The support and limiting roller can apply radially inward pressure to the surface of the steel coil m, which can partially offset the tension of the steel coil m itself, thereby reducing the probability of unwinding. Here, the support and limiting roller 33 is rotatably mounted on the upper surface of the movable base 31 via the positioning frame 34.

[0027] In addition, since the support and limiting roller 33 can rotate under the friction of the steel coil m, it plays the role of guiding the rotation of the steel coil m.

[0028] In this embodiment, the resistance plate 44 has a resistance plane 441 at one end near the steel coil m. The resistance plane 441 is perpendicular to the axis of the steel coil m and can stably contact the end face of the steel coil m.

[0029] In this embodiment, the limiting member 43 is coaxially arranged with the steel coil m, and can extend into the steel coil m to contact its inner wall, thereby achieving axial limiting of the steel coil m. Specifically, the limiting method is that multiple limiting blocks 431 are provided on the outer peripheral surface of the limiting member 43. Each limiting block 431 has an arc surface for contacting the inner wall of the steel coil m. The multiple limiting blocks 431 are evenly spaced along the circumference of the limiting member 43. On the one hand, this reduces the weight of the limiting member 43 and improves its service life; on the other hand, it ensures stable contact between the limiting member 43 and the inside of the steel coil m, ensuring the stability of the position of the steel coil m.

[0030] In this embodiment, a base 5 is provided for each machine base 1. The base 5 is located below the machine base 1. The base 5 is provided with a slide rail 51 for sliding the machine base 1 and a drive assembly 6 for driving the machine base 1 to slide along the slide rail 51. The sliding of the machine base 1 on the base 5 can adjust the distance between the two machine bases 1, thereby accommodating steel coils of different widths m.

[0031] More specifically, the slide rail 51 extends along the moving direction of the base 1, and the base 1 is provided with at least one sliding member (not shown in the figure) corresponding to the slide rail 51. The sliding member is slidably connected to the slide rail 51. Here, the sliding member can be set as a slider. Correspondingly, the slide rail 51 is provided with a groove matching the slider. The slider is slidably embedded in the slide rail 51, ensuring the stable sliding of the base 1 on the base 5.

[0032] Furthermore, the drive assembly 6 is configured as a telescopic cylinder or a telescopic hydraulic cylinder, with its movable end connected to the base 1 and its fixed end fixedly installed on the base 5. When the drive assembly 6 is working, it can drive the base 1 to slide repeatedly on the base 5, thereby adapting to steel coils of different widths m.

[0033] In this embodiment, the movable seat 31 can be either rolled or slidably mounted on the movable guide rail 2, meaning the movable seat 31 and the movable guide rail 2 can be in a rolling or sliding engagement. Both rolling and sliding engagements between the movable seat 31 and the movable guide rail 2 are common engagement methods and will not be described in detail here.

[0034] In this embodiment, in order to ensure the stable rotation of the rotating shaft 42 relative to the base 1, the rotating shaft 42 is rotatably positioned on the base 1 by the bearing 45.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A steel coil uncoiling device for spiral welded pipe production, characterized in that, include: Two spaced-apart bases (1) are provided, and the two bases (1) are slidable along the axial direction of the steel coil (m); The movable guide rail (2) is set between the two machine bases (1) and extends along the length direction after the steel coil (m) is unrolled; The unwinding mechanism (3) includes a movable seat (31) for carrying the steel coil (m) and an unwinding assembly (32) for driving the steel coil (m) to rotate so that it gradually unfolds. The movable seat (31) is movably mounted on the movable guide rail (2) along the length direction of the steel coil (m). Two limiting mechanisms (4) are respectively set on the two machine bases (1). The limiting mechanism (4) includes a driver (41), a rotating shaft (42) driven by the driver (41), a limiting member (43) that can extend into the steel coil (m) to axially limit the steel coil (m), and a resistance plate (44) set at one end of the steel coil (m). The resistance plate (44) can contact one end face of the steel coil (m) under the movement of the machine base (1). The limiting member (43) is set on the side of the resistance plate (44) close to the steel coil (m). The rotating shaft (42) drives the resistance plate (44) to rotate in the opposite direction of the rotation of the steel coil (m) to prevent the steel coil (m) from spreading out under its own tension.

2. The steel coil uncoiling device for spiral welded pipe production according to claim 1, characterized in that, The unwinding assembly (32) includes two unwinding rollers (321) rotatably disposed on the upper surface of the movable seat (31). The two unwinding rollers (321) are spaced apart along the unfolding direction of the steel coil (m). The steel coil (m) is supported on the surface of the movable seat (31) between the two unwinding rollers (321). When the two unwinding rollers (321) rotate, they drive the steel coil (m) to rotate along its own axis.

3. The steel coil uncoiling device for spiral welded pipe production according to claim 2, characterized in that, The movable seat (31) is also provided with a support limiting roller (33) for contacting the surface of the steel coil (m). The support limiting roller (33) is located on the other side of the unfolded steel coil (m). The support limiting roller (33) can apply radially inward pressure to the surface of the steel coil (m). The support limiting roller (33) is rotatably mounted on the movable seat (31) by a positioning frame (34).

4. The steel coil uncoiling device for spiral welded pipe production according to claim 1, characterized in that, The resistance plate (44) has a resistance plane (441) at one end near the steel coil (m), and the resistance plane (441) is perpendicular to the axis of the steel coil (m).

5. A steel coil uncoiling device for spiral welded pipe production according to claim 4, characterized in that, The limiting member (43) is fixedly connected to the resistance plane (441) and coaxially arranged with the steel coil (m). Multiple limiting blocks (431) are provided on the outer peripheral surface of the limiting member (43), and the limiting blocks (431) have arc surfaces for contacting the inner wall of the steel coil (m).

6. The steel coil uncoiling device for spiral welded pipe production according to claim 1, characterized in that, Each of the bases (1) is provided with a base (5), and the base (5) is provided with a slide rail for sliding the base (1) and a drive assembly (6) for driving the base (1) to slide along the slide rail; the slide rail extends along the moving direction of the base (1), and the base (1) is provided with at least one sliding member corresponding to the slide rail, and the sliding member is slidably connected to the slide rail.

7. A steel coil uncoiling device for spiral welded pipe production according to claim 6, characterized in that, The drive component (6) is configured as a telescopic cylinder or a telescopic hydraulic cylinder.

8. The steel coil uncoiling device for spiral welded pipe production according to claim 1, characterized in that, The movable seat (31) is either rolled or slidably mounted on the movable guide rail (2).

9. A steel coil uncoiling device for spiral welded pipe production according to claim 2, characterized in that, The unwinding roller (321) is an electric roller.

10. A steel coil uncoiling device for spiral welded pipe production according to claim 1, characterized in that, The rotating shaft (42) is rotatably positioned on the base (1) via a bearing (45).

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