A strip steel pre-bending device for steel pipe production

Abstract

The utility model discloses a kind of strip steel pre-bending devices for steel pipe production, comprising: frame, its inside is provided with transmission channel for the movement of strip steel;Down-pressing mechanism, including the down-pressing roller located above strip steel, the first driving component for driving the lifting movement of the down-pressing roller and the second driving component for driving the movement of the down-pressing roller along the width direction of strip steel;Bending forming mechanism, at least including the pre-bending roller located below strip steel and relatively strip steel inclined arrangement, the third driving component for driving the lifting movement of the pre-bending roller and the fourth driving component for driving the sliding of the pre-bending roller along the width direction of strip steel;Supporting mechanism, including the support component for supporting strip steel and the fifth driving component for driving the sliding of the support component along the width direction of strip steel.The utility model has the beneficial effect that different width and thickness of strip steel can be pre-bent.

Description

Technical Field

[0001] This utility model relates to a strip pre-bending device for steel pipe production, belonging to the technical field of steel pipe processing equipment. Background Technology

[0002] In the production process of spiral welded steel pipes, the strip steel needs to be pre-bent (pre-bent) on its side edges before entering the main forming machine to form the specific shape required for the spiral pipe pile. This process is crucial to ensuring the roundness, welding quality, and overall structural strength of the final steel pipe.

[0003] Existing pre-bending equipment often has the following problems: First, it has poor adaptability and is difficult to adjust flexibly to adapt to strips of different widths or thicknesses; second, it has insufficient pre-bending accuracy and is prone to uneven bending angles or damage to the edges of the strip. Utility Model Content

[0004] The purpose of this invention is to provide a strip pre-bending device for steel pipe production, which can pre-bend strips of different widths and thicknesses.

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

[0006] A strip pre-bending device for steel pipe production, comprising: The frame has a transmission channel running through it for moving the strip steel. The pressing mechanism includes a pressing roller located above the strip, a first driving component for driving the pressing roller to move up and down, and a second driving component for driving the pressing roller to move along the width direction of the strip. The bending forming mechanism includes at least a pre-bending roll located below the strip and inclined relative to the strip, a third driving component for driving the pre-bending roll to move up and down, and a fourth driving component for driving the pre-bending roll to slide in the width direction of the strip. The support mechanism includes a support component for supporting the strip steel and a fifth drive component for driving the support component to slide along the width direction of the strip steel.

[0007] As a further improvement of this utility model, the bending forming mechanism further includes a first mounting seat slidably connected to the bottom wall of the frame along the width direction of the strip, the pre-bending roller and the third driving component are mounted on the first mounting seat, and a fourth driving component is connected to the first mounting seat to drive the first mounting seat to slide along the width direction of the strip.

[0008] As a further improvement of this utility model, a guide assembly is provided between the third driving component and the pre-bending roller. The guide assembly includes a positioning block for positioning the pre-bending roller and a plurality of vertically extending guide posts. The positioning block is provided with a guide hole corresponding to each guide post. The positioning block is slidably sleeved on the guide post. The third driving component is connected to the positioning block.

[0009] As a further improvement of this utility model, the support mechanism further includes a second mounting base that is slidably connected to the bottom wall of the frame along the width direction of the strip steel, the support component is fixed on the second support base, and the fifth drive component is connected to the second mounting base.

[0010] As a further improvement of this utility model, at least one first slide rail is provided on the bottom wall of the frame. The first slide rail extends along the width direction of the strip steel. At least one first sliding member is provided on both the first mounting base and the second mounting base. The sliding member is slidably connected to the first slide rail.

[0011] As a further improvement of this utility model, the pressing mechanism further includes a third mounting base for mounting the pressing roller and the first driving component, the second driving component is connected to the third mounting base, and the second driving component is mounted on the frame; the top of the frame is provided with two parallel and spaced second slide rails, the second slide rails extend along the width direction of the strip, and the third mounting base is slidably connected to the second slide rails by at least one second sliding member; the two second slide rails are used to support the third mounting base, and the pressing roller is located below the second slide rails.

[0012] As a further improvement of this utility model, the second slide rail is provided with a slide groove extending along the width direction of the strip steel, and the second sliding member is slidably embedded in the slide groove.

[0013] As a further improvement of this utility model, the first driving component, the second driving component, the third driving component, the fourth driving component, and the fifth driving component are all configured as one of a telescopic cylinder, a telescopic hydraulic cylinder, or an electric push rod.

[0014] As a further improvement of this utility model, the side wall of the frame is provided with a detector for detecting the bending angle of the strip steel.

[0015] The beneficial effects of this utility model are: 1. Through the coordinated action of the second, fourth, and fifth drive components, the positions of the pressure roller, pre-bending roller, and support components in the width direction of the strip can be controlled independently and precisely. On the one hand, it can adapt to the pre-bending processing of strips with different widths and thicknesses, and meet the strip pre-bending requirements when producing steel pipes of different sizes. On the other hand, it can accurately control the bending position of the strip edge, effectively ensuring the pre-bending quality of the strip.

[0016] On the other hand, it effectively ensures the pre-bending quality of the strip steel.

[0017] 2. The guiding cooperation between the guide column and the positioning seat ensures that the pre-bending roller can move smoothly up and down under the drive of the third drive component, making the bending process of the strip edge smoother and more stable, effectively reducing the possibility of stress concentration and material damage. 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 strip pre-bending device for steel pipe production according to this utility model; Figure 2 This is a schematic diagram of the structure of the pressing mechanism and the second guide rail. 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 strip pre-bending device for steel pipe production, used to pre-bend strip steel during steel pipe production, as described above. Figure 1-2 It includes a frame 1, a pressing mechanism 2, a bending and forming mechanism 3, and a support mechanism 4. The frame 1 is usually welded from steel profiles and has sufficient rigidity and strength. A transmission channel along the length of the strip m is formed inside the frame 1, and the strip m is transported along this channel.

[0022] The pressing mechanism 2 includes at least a pressing roller 21 located above the strip m, a first driving component 22 for driving the pressing roller 21 to move up and down, and a second driving component 23 for driving the pressing roller 21 to move along the width direction of the strip m. That is, the first driving component 22 can adjust the position of the pressing roller 21 in the vertical direction, and the second driving component 23 can adjust the position of the pressing roller 21 in the width direction of the strip m.

[0023] The bending forming mechanism 3 includes at least a pre-bending roller 31 located below the strip m and inclined relative to the horizontal surface of the strip m, a third driving component 32 for driving the pre-bending roller 31 to move up and down, and a fourth driving component 33 for driving the pre-bending roller 31 to slide in the width direction of the strip m. That is, the third driving component 32 can adjust the position of the pre-bending roller 31 in the vertical direction, and the fourth driving component 33 can adjust the position of the pre-bending roller 31 in the width direction of the strip m.

[0024] The support mechanism 4 includes at least a support component 41 for supporting the strip steel m and a fifth drive component 52 for driving the support component 41 to slide along the width direction of the strip steel m. The upper surface of the support component 41 is parallel to the lower surface of the strip steel m and fits tightly against the lower surface of the strip steel m. At the same time, the upper surface of the support component 41 has a large contact area to stably support the strip steel m and avoid abnormal deformation of the strip steel m. That is, the fifth drive component 52 can adjust the position of the support component 41 in the width direction of the strip steel m to achieve precise support of the strip steel m and avoid interference with the position of the pre-bending roll 31. During operation, the strip steel m is first fed into the frame 1 via an external transmission mechanism. Then, based on the width of the strip steel m and the requirements of the pre-bending process, the second drive component 23, the fourth drive component 33, and the fifth drive component 52 adjust the positions of the lower pressure roller 21, the pre-bending roller 31, and the support component 41 in the width direction of the strip steel m, aligning them with the area to be bent at the edge of the strip steel m. Next, the first drive component 22 drives the lower pressure roller 21 downward, pressing the upper surface of the strip steel m; simultaneously, the third drive component 32 drives the pre-bending roller 31 upward, cooperating with the lower pressure roller 21 to squeeze the edge of the strip steel m, bending it along the inclined surface of the pre-bending roller 31. The support component 41 provides support below for the portion of the strip steel m that does not require pre-bending, preventing deformation in this part of the strip steel m.

[0025] In this embodiment, through the coordinated action of the second driving component 23, the fourth driving component 33, and the fifth driving component 52, the positions of the pressure roller 21, the pre-bending roller 31, and the support component 41 in the width direction of the strip m can be controlled independently and precisely. On the one hand, it can adapt to the pre-bending processing of strips m with different widths and thicknesses, and meet the strip pre-bending requirements when producing steel pipes of different sizes. On the other hand, it can accurately control the bending position of the edge of the strip m, effectively ensuring the pre-bending quality of the strip m.

[0026] More specifically for the bending forming mechanism 3, the bending forming mechanism 3 also includes a first mounting base 34 slidably connected to the bottom wall of the frame 1 along the width direction of the strip m, a third driving component 32 mounted on the first mounting base 34, the third driving component 32 driving the pre-bending roller 31, thereby driving the pre-bending roller 31 to move up and down, and a fourth driving component 33 connected to the first mounting base 34 to drive the first mounting base 34 to slide along the width direction of the strip m. The fourth driving component 33 can be fixed on the frame 1 to ensure the stability of the position of the fourth driving component 33, thereby driving the third mounting base 24 to slide in the width direction of the strip m.

[0027] In addition, a guide assembly 35 is provided between the third drive component 32 and the pre-bending roller 31. The guide assembly 35 includes a positioning seat for positioning the pre-bending roller 31 and a plurality of vertically extending guide posts 352. The positioning block is provided with a guide hole corresponding to each guide post 352. The positioning block 351 is slidably sleeved on the guide post 352 through the guide hole. The movable end of the third drive component 32 is connected to the positioning block 351. The guiding cooperation between the guide post 352 and the positioning block 351 ensures that the pre-bending roller 31 can move smoothly up and down under the drive of the third drive component 32, making the bending process of the strip steel m edge smoother and more stable, effectively reducing the possibility of stress concentration and material damage.

[0028] In this embodiment, the axis of the pre-bending roller 31 is inclined at a certain angle to the horizontal plane of the strip m. This angle can be adjusted between 15° and 30° according to process requirements.

[0029] More specifically, the support mechanism 4 also includes a second mounting base 53 that is slidably connected to the bottom wall of the frame 1 along the width direction of the strip m. The support component 41 is fixed on the second mounting base 53, and the fifth drive component 52 is connected to the second mounting base 53. The fifth drive component 52 can be fixed inside the frame 1. When the fifth drive component 52 is working, it can drive the second mounting base 53 to move along the width direction of the strip m, thereby adjusting the position of the support component 41 in the width direction of the strip m and realizing stable support for the strip m.

[0030] In addition, the bottom wall of the frame 1 is provided with two parallel first slide rails 6, which extend along the width direction of the strip m. The first mounting base 34 and the second mounting base 53 each have at least one first sliding member corresponding to each first slide rail 6. The sliding member is slidably connected to the first slide rail 6, meaning the first mounting base 34 and the second mounting base 53 share the first slide rail 6, which helps simplify the structure. The first slide rail 6 and the first sliding member can be fitted together to ensure smooth sliding of the first mounting base 34 and the second mounting base 53. At least one first slide rail 6 is provided to ensure smooth sliding of the first mounting base 34 and the second mounting base 53.

[0031] More specifically, the pressing mechanism 2 further includes a third mounting base 24 for mounting the pressing roller 21 and the first driving component 22. A second driving component 23 is connected to the third mounting base 24 and mounted on the frame 1. The top of the frame 1 has two parallel, spaced second slide rails 7 extending along the width direction of the strip m. The third mounting base 24 is slidably connected to one of the second slide rails 7 via at least one second sliding member. The two second slide rails 7 support the third mounting base 24. The pressing roller 21 is located inside the frame 1 and below the second slide rails 7. The first driving component 22 passes through the top wall of the frame 1. It should be noted that the gap between the two second slide rails 7 on the top wall of the frame 1 is hollowed out to avoid interference with the horizontal movement of the first driving component 22.

[0032] Meanwhile, the second slide rail 7 is provided with a slide groove 71 extending along the width direction of the strip m, and the second sliding member is a slider that matches the slide groove 71. The second sliding member is slidably embedded in the slide groove 71, and the cooperation between the slider and the sliding member ensures the stability of the third mounting base 24 moving along the second slide rail 7.

[0033] In this embodiment, the first drive component 22, the second drive component 23, the third drive component 32, the fourth drive component 33, and the fifth drive component 52 are all equipped with automated components such as telescopic cylinders, telescopic hydraulic cylinders, or electric push rods, which facilitates integrated control by the control system.

[0034] It should be noted that in this embodiment, both the lower pressure roller 21 and the pre-bending roller 31 are rotatable. They can be installed through a rotating shaft and a mounting bracket. The rotatable pressure roller and pre-bending roller 31 can rotate along their own axis under the drive of the moving strip steel m, thereby guiding the movement of the strip steel m and ensuring the normal transmission of the strip steel m.

[0035] In this embodiment, a detector, such as a laser rangefinder, can be installed on the side wall of the frame 1. The detector is located at the gap where the pressure roller 21, the support component 41, and the pre-bending roller 31 are joined. The detector is used to monitor the bending curvature of the strip m in real time and feed the detection data back to the control system to achieve closed-loop control.

[0036] 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 strip pre-bending device for steel pipe production, characterized in that, include: The frame (1) has a transmission channel for moving the strip (m) through it; The pressing mechanism (2) includes a pressing roller (21) located above the strip (m), a first driving component (22) for driving the pressing roller (21) to move up and down, and a second driving component (23) for driving the pressing roller (21) to move along the width direction of the strip (m). The bending forming mechanism (3) includes a pre-bending roller (31) located below the strip (m) and inclined relative to the horizontal surface of the strip (m), a third driving component (32) for driving the pre-bending roller (31) to move up and down, and a fourth driving component (33) for driving the pre-bending roller (31) to slide along the width direction of the strip (m). The support mechanism (4) includes a support member (41) for supporting the strip (m) and a fifth drive member (52) for driving the support member (41) to slide along the width direction of the strip (m).

2. The strip pre-bending device for steel pipe production according to claim 1, characterized in that, The bending forming mechanism (3) further includes a first mounting seat (34) slidably connected to the bottom wall of the frame (1) along the width direction of the strip (m), the pre-bending roller (31) and the third driving component (32) are mounted on the first mounting seat (34), and the fourth driving component (33) is connected to the first mounting seat (34) to drive the first mounting seat (34) to slide along the width direction of the strip (m).

3. The strip pre-bending device for steel pipe production according to claim 2, characterized in that, A guide assembly (35) is provided between the third drive component (32) and the pre-bending roller (31). The guide assembly (35) includes a positioning block (351) for positioning the pre-bending roller (31) and a plurality of vertically extending guide posts (352). The positioning block (351) is provided with a guide hole corresponding to each guide post (352). The positioning block (351) is slidably sleeved on the guide post (352). The third drive component (32) is connected to the positioning block (351).

4. The strip pre-bending device for steel pipe production according to claim 3, characterized in that, The pre-bending roll (31) is tilted at an angle of 15°-30° relative to the horizontal surface of the strip (m).

5. A strip pre-bending device for steel pipe production according to claim 2, characterized in that, The support mechanism (4) further includes a second mounting base (53) that is slidably connected to the bottom wall of the frame (1) along the width direction of the strip (m). The support component (41) is fixed on the second mounting base (53), and the fifth drive component (52) is connected to the second mounting base (53).

6. A strip pre-bending device for steel pipe production according to claim 5, characterized in that, At least one first slide rail (6) is provided on the bottom wall of the frame (1). The first slide rail (6) extends along the width direction of the strip (m). At least one first sliding member is provided on both the first mounting base (34) and the second mounting base (53). The sliding member is slidably connected to the first slide rail (6).

7. The strip pre-bending device for steel pipe production according to claim 1, characterized in that, The pressing mechanism (2) further includes a third mounting base (24) for mounting the pressing roller (21) and the first driving component (22), the second driving component (23) is connected to the third mounting base (24), and the second driving component (23) is mounted on the frame (1); the top of the frame (1) is provided with two parallel and spaced second slide rails (7), the second slide rails (7) extend along the width direction of the strip (m), and the third mounting base (24) is slidably connected to one of the second slide rails (7) by at least one second sliding member; the two second slide rails (7) are used to support the third mounting base (24), and the pressing roller (21) is located below the second slide rails (7).

8. A strip pre-bending device for steel pipe production according to claim 7, characterized in that, The second slide rail (7) is provided with a groove (71) extending along the width direction of the strip (m), and the second sliding member is slidably embedded in the groove (71).

9. A strip pre-bending device for steel pipe production according to claim 1, characterized in that, The first drive component (22), the second drive component (23), the third drive component (32), the fourth drive component (33), and the fifth drive component (52) are all configured as one of a telescopic cylinder, a telescopic hydraulic cylinder, or an electric push rod.

10. A strip pre-bending device for steel pipe production according to any one of claims 1 to 9, characterized in that, The side wall of the frame (1) is provided with a detector for detecting the bending angle of the strip (m).

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