Polygonal automatic bending mechanism for steel belt

By designing an automatic polygonal bending mechanism for steel strips, and using a push rod mechanism and an adjustable-pitch motor drive, the problems of non-conforming and inconsistent thickness of scrap steel strips were solved, realizing automated polygonal bending and welding, and improving automation efficiency and finished product qualification rate.

CN224168442UActive Publication Date: 2026-04-28TANGSHAN XINHE INTELLIGENT TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TANGSHAN XINHE INTELLIGENT TECH CO LTD
Filing Date
2025-06-03
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

In existing technologies, the non-compliance and inconsistent thickness of scrap steel strips make it difficult to achieve automated polygonal bending and welding, and manual operation is inefficient and cannot meet market demands.

Method used

An automatic polygonal bending mechanism for steel strips was designed, including a structural frame, a positioning mechanism, and a bending structure. Driven by a push rod mechanism and an adjustable distance motor, it can collect, reposition, and bend irregular steel strips to form standardized hexagonal bundles.

Benefits of technology

It enables automated polygonal bending and welding of non-standard thick steel strips, improving the fault tolerance and flexibility, enhancing automation efficiency and finished product qualification rate, and meeting market demand for bending and welding of thick steel strips.

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Abstract

The utility model discloses a steel belt polygon automatic bending mechanism which comprises a structural rack, a positioning mechanism and a bending structure, the structural rack is composed of a left support and a right support, the two supports form an angle of 150 degrees, and the bending structure is arranged in the center of the left support of the structural rack. The bending structure comprises a first push rod mechanism, a second push rod mechanism, a third push rod mechanism, a fourth push rod mechanism, a fifth push rod mechanism and a sixth push rod mechanism, and the first push rod mechanism, the second push rod mechanism, the third push rod mechanism, the fourth push rod mechanism, the fifth push rod mechanism and the sixth push rod mechanism are all arranged in the outer vertical face of the structural rack. During bending, after the length of the steel belt body is selected, the distance adjusting motor rotates to drive the distance adjusting screw rod to rotate, the air cylinder stretches out and draws back to drive the external crank connecting rod mechanism to rotate, so that the steel belt body is bent between the external crank connecting rod mechanism and the bending stop block, and the first push rod mechanism and the second push rod mechanism execute the bending action at the same time firstly.
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Description

Technical Field

[0001] This utility model relates to the field of automatic bending mechanism for polygonal steel strips, and specifically to an automatic bending mechanism for polygonal steel strips. Background Technology

[0002] Currently, most steel pipe manufacturers use scrap steel strips to bundle steel pipes, considering both economic factors and waste utilization principles. However, because these scrap steel strips are made from substandard steel pipes that have been planed, unfolded, and flattened, they exhibit inconsistent and non-standard characteristics. The steel strip thickness is typically around 5mm, making automated bending difficult, and manual bending and welding are usually required.

[0003] Most steel strips on the market are bent and welded manually. They cannot be automatically bent into polygons or into different sizes. They also have high requirements for the consistency of steel strip thickness, which cannot meet the needs of bending and welding scrap steel strips later.

[0004] Therefore, it is necessary to provide an automatic bending mechanism for polygonal steel strips to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or to imply in any way that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] To address this issue, this utility model provides an automatic polygonal bending mechanism for steel strips. When used in conjunction with other mechanisms, it solves the problems of existing steel strip bending and welding methods, which primarily rely on manual methods. These methods cannot automatically bend steel strips into polygonal shapes, handle steel strips of different sizes, or meet the stringent requirements for consistent steel strip thickness, thus failing to satisfy the needs for bending and welding scrap steel strips in the future.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steel strip polygonal automatic bending mechanism, comprising a structural frame, a positioning mechanism and a bending structure, wherein the structural frame is composed of two supports, left and right, which are at a 150° angle, and the bending structure is located at the center of the left support of the structural frame;

[0007] The bending structure includes a first push rod mechanism, a second push rod mechanism, a third push rod mechanism, a fourth push rod mechanism, a fifth push rod mechanism, and a sixth push rod mechanism, all of which are located inside the outer facade of the structural frame.

[0008] The positioning mechanism is located directly below the bending structure. The positioning mechanism includes a slide rail and a movable slider, and the movable slider is slidably connected to the inner cavity of the slide rail.

[0009] Preferably, the support on the left side of the structural frame is a rectangular vertical panel. The structural frame is divided into left and right parts. The structural frame serves as a load-bearing mechanism for various devices, providing support and stability when each device performs its actions.

[0010] Preferably, the right-side support of the structural frame is a support composed of channel steel and vertical panels. The support of channel steel and vertical panels facilitates the assembly of external mechanisms and devices.

[0011] Preferably, the first push rod mechanism, the second push rod mechanism, the third push rod mechanism, the fourth push rod mechanism, the fifth push rod mechanism, and the sixth push rod mechanism are all driven and linked by an adjustable pitch motor, six adjustable pitch screws, and six reciprocating push rod mechanisms. The reciprocating push rod mechanism is driven by a push rod cylinder. The six reciprocating push rod mechanisms are arranged in a hexagonal pattern, which can realize the coiling, repositioning, and bending of the steel strip body, and finally form a hexagonal binding steel strip with a standard inscribed circle diameter.

[0012] Preferably, a steel strip body is provided above the movable slider and the slide rail. The position can be manually adjusted laterally by moving the slider, and the position can be steplessly adjusted on the slide rail. It can accommodate steel strip bodies of various specifications and sizes. The equipment can start automatic operation only after manual pre-adjustment.

[0013] Preferably, a support base is installed at the bottom of the structural frame, and an installation hole is provided on the top of the support base, which serves to fix and support the structural frame.

[0014] Preferably, it also includes a cylinder, which is connected to a push rod; the push rod is connected to a stroke guide, which is connected to a fixed angle; the fixed angle cooperates with a retaining steel strip.

[0015] The beneficial effects of this utility model are:

[0016] 1. When bending, the steel strip body length is selected, the pitch motor rotates, which drives the pitch screw to rotate, the cylinder extends and retracts, which drives the external crank-connecting rod mechanism to rotate, so that the steel strip body bends between the external crank-connecting rod mechanism and the bending stop. The first push rod mechanism and the second push rod mechanism first perform the bending action simultaneously.

[0017] 2. The push rods of the remaining four third, fourth, fifth, and sixth push rod mechanisms of this utility model are sequentially exposed and pushed forward to complete the hexagonal bending. Through the above steps, the non-standard thick steel strip body is automatically bent and welded into polygons. It has a high fault tolerance rate, high flexibility, is convenient for manual operation, high automation efficiency, and high finished product qualification rate, which can meet the market demand for thick steel strip bending and welding. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of this utility model;

[0019] Figure 2 A three-dimensional structural schematic diagram provided for this utility model;

[0020] Figure 3 This is a schematic diagram of the main structure provided for this utility model;

[0021] Figure 4 A schematic diagram of the cylinder structure provided for this utility model;

[0022] Figure 5 This is a partial structural schematic diagram of the present invention;

[0023] Figure 6 This is a top view of the structure provided for this utility model.

[0024] In the diagram: 1. Structural frame; 2. Positioning mechanism; 3. Bending structure; 4. First push rod mechanism; 5. Second push rod mechanism; 6. Third push rod mechanism; 7. Fourth push rod mechanism; 8. Fifth push rod mechanism; 9. Sixth push rod mechanism; 10. Moving slider; 11. Steel strip body; 12. Cylinder; 13. Push rod; 14. Stroke guide; 15. Fixed angle; 16. Holding steel strip. Detailed Implementation

[0025] 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.

[0026] Example 1, refer to Appendix Figure 1-6 The present invention provides a steel strip polygonal automatic bending mechanism, including a structural frame 1, a positioning mechanism 2 and a bending structure 3. The structural frame 1 is composed of two supports on the left and right sides, and the two supports are at a 150° angle. The bending structure 3 is located at the center of the left support of the structural frame 1.

[0027] The bending structure 3 includes a first push rod mechanism 4, a second push rod mechanism 5, a third push rod mechanism 6, a fourth push rod mechanism 7, a fifth push rod mechanism 8, and a sixth push rod mechanism 9. The first push rod mechanism 4, the second push rod mechanism 5, the third push rod mechanism 6, the fourth push rod mechanism 7, the fifth push rod mechanism 8, and the sixth push rod mechanism 9 are all located inside the outer facade of the structural frame 1. The first push rod mechanism 4 and the second push rod mechanism 5 are spinning bending mechanisms, while the third push rod mechanism 6, the fourth push rod mechanism 7, the fifth push rod mechanism 8, and the sixth push rod mechanism 9 are pushing bending mechanisms.

[0028] The positioning mechanism 2 is located directly below the bending structure 3. The positioning mechanism 2 includes a slide rail and a movable slider 10. The movable slider 10 is slidably connected to the inner cavity of the slide rail. The cylinder 12 is connected to the push rod 13. The push rod 13 is connected to the stroke guide 14. The stroke guide 14 is connected to the fixed angle 15. The fixed angle 15 cooperates with the clamping steel strip 16.

[0029] The usage process of this utility model is as follows: When using this utility model, the structural frame 1, composed of two supports on the left and right, is at a 150° angle to each other. It serves as the bearing mechanism for various mechanical devices. When each device performs its action, it provides support and stability, and also increases the stability of each device during use. By setting the movable slider 10, the position can be manually adjusted laterally, or the position can be steplessly adjusted on the slide rail. It can adapt to various specifications and sizes of steel strip bodies 11. The equipment can start automatic operation only after manual pre-adjustment. Through the setting of the first push rod mechanism 4, the second push rod mechanism 5, the third push rod mechanism 6, the fourth push rod mechanism 7, the fifth push rod mechanism 8, and the sixth push rod mechanism 9, since each push rod mechanism is powered by a push rod cylinder, the irregular steel strip can be gathered, repositioned, and bent through the hexagonal mechanical structure. Finally, the steel strip body 11 is formed into a hexagonal binding steel strip with a standard inscribed circle diameter.

[0030] Example 2: The automatic polygonal bending mechanism for steel strip provided by this utility model differs from Example 1 in that:

[0031] Refer to the instruction manual appendix Figure 1-2 This embodiment describes a polygonal automatic bending mechanism for steel strips. The left side support of the structural frame 1 is a rectangular vertical panel. The structural frame 1 is divided into left and right parts. The right side support of the structural frame 1 is a support composed of channel steel and a vertical panel. The first push rod mechanism 4, the second push rod mechanism 5, the third push rod mechanism 6, the fourth push rod mechanism 7, the fifth push rod mechanism 8, and the sixth push rod mechanism 9 are all driven by an adjustable pitch motor, six adjustable pitch screws, and six reciprocating push rod mechanisms. The reciprocating push rod mechanisms are driven by push rod cylinders. A steel strip body 11 is provided above the moving slider 10 and the slide rail. A support base is installed at the bottom of the structural frame 1, and a mounting hole is provided above the support base.

[0032] The usage process of this utility model is as follows: When using this utility model, after selecting the length of the steel strip body 11 during bending, the pitch motor rotates, driving the pitch screw to rotate, the cylinder extends and retracts, driving the external crank-connecting rod mechanism to rotate, so that the steel strip body 11 bends between the external crank-connecting rod mechanism and the bending stop. The first push rod mechanism 4 and the second push rod mechanism 5 first execute the bending action simultaneously, and the other four push rod mechanisms, the third push rod mechanism 6, the fourth push rod mechanism 7, the fifth push rod mechanism 8 and the sixth push rod mechanism 9, sequentially expose the push rods and push forward to complete the hexagonal bending. Through the above steps, the non-standard thick steel strip body 11 can be automatically bent and welded into polygons. It has a high fault tolerance rate, high flexibility, is convenient for manual operation, high automation efficiency, and high finished product qualification rate, which can meet the market demand for thick steel strip bending and welding.

[0033] The specific implementation scenario is as follows: When using this utility model, the structural frame 1, composed of two supports at a 150° angle, serves as the load-bearing mechanism for various devices. It provides support and stability during the operation of each device, increasing their stability. The movable slider 10 allows for manual lateral adjustment or stepless adjustment on the slide rail, accommodating various sizes of steel strip bodies 11. The equipment can only begin automatic operation after manual pre-adjustment. Through the arrangement of the first push rod mechanism 4, second push rod mechanism 5, third push rod mechanism 6, fourth push rod mechanism 7, fifth push rod mechanism 8, and sixth push rod mechanism 9, each powered by a push rod cylinder, the hexagonal mechanical structure enables the coiling, repositioning, and bending of irregular steel strips, ultimately resulting in a steel strip... The main body 11 forms a hexagonal binding steel strip with a standard inscribed circle diameter. During bending, after selecting the length of the steel strip main body 11, the pitch motor rotates, driving the pitch screw to rotate. The cylinder extends and retracts, driving the external crank-connecting rod mechanism to rotate, causing the steel strip main body 11 to bend between the external crank-connecting rod mechanism and the bending stop. The first push rod mechanism 4 and the second push rod mechanism 5 first execute the bending action simultaneously. The remaining four push rod mechanisms, the third push rod mechanism 6, the fourth push rod mechanism 7, the fifth push rod mechanism 8 and the sixth push rod mechanism 9, sequentially expose the push rods and push forward to complete the hexagonal bending. Through the above steps, the non-standard thick steel strip main body 11 is automatically bent and welded into polygons. It has a high fault tolerance rate, high flexibility, is convenient for manual operation, has high automation efficiency, and a high finished product qualification rate, which can meet the market demand for thick steel strip bending and welding.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A polygonal automatic bending mechanism for steel strip, comprising a structural frame (1), a positioning mechanism (2), and a bending structure (3), characterized in that: The structural frame (1) is composed of two supports, left and right, and the two supports are at a 150° angle. The bending structure (3) is located at the center of the left support of the structural frame (1). The bending structure (3) includes a first push rod mechanism (4), a second push rod mechanism (5), a third push rod mechanism (6), a fourth push rod mechanism (7), a fifth push rod mechanism (8), and a sixth push rod mechanism (9). The first push rod mechanism (4), the second push rod mechanism (5), the third push rod mechanism (6), the fourth push rod mechanism (7), the fifth push rod mechanism (8), and the sixth push rod mechanism (9) are all located inside the outer facade of the structural frame (1). The positioning mechanism (2) is located directly below the bending structure (3). The positioning mechanism (2) includes a slide rail and a movable slider (10), and the movable slider (10) is slidably connected to the inner cavity of the slide rail.

2. The automatic polygonal bending mechanism for steel strip according to claim 1, characterized in that: The support on the left side of the structural frame (1) is a rectangular vertical panel, and the structural frame (1) is divided into left and right parts.

3. The automatic polygonal bending mechanism for steel strip according to claim 1, characterized in that: The right-side support of the structural frame (1) is a support composed of channel steel and vertical panels.

4. The automatic polygonal bending mechanism for steel strip according to claim 1, characterized in that: The first push rod mechanism (4), the second push rod mechanism (5), the third push rod mechanism (6), the fourth push rod mechanism (7), the fifth push rod mechanism (8) and the sixth push rod mechanism (9) are all driven by a pitch motor, six pitch screws and six reciprocating push rod mechanisms, and the reciprocating push rod mechanism is driven by a push rod cylinder.

5. The automatic polygonal bending mechanism for steel strip according to claim 1, characterized in that: A steel strip body (11) is provided above the movable slider (10) and the slide rail.

6. The automatic polygonal bending mechanism for steel strip according to claim 1, characterized in that: The bottom of the structural frame (1) is equipped with a support base, and the support base has an installation hole on its upper part.

7. The automatic polygonal bending mechanism for steel strip according to claim 1, characterized in that: It also includes a cylinder (12), which is connected to a push rod (13); the push rod (13) is connected to a stroke guide (14), which is connected to a fixed angle (15); the fixed angle (15) cooperates with a retaining steel strip (16).