Unequal-thickness rolling profile forming device

By introducing a combination of fixed and movable bearing seats with an elastic adjustment mechanism into the roller pressing equipment, online adjustment of the roller gap was achieved, solving the molding accuracy problem of products with uneven wall thickness and improving production efficiency and molding quality.

CN224195657UActive Publication Date: 2026-05-05LINGYUN INDAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LINGYUN INDAL CORP
Filing Date
2025-03-31
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Traditional roller pressing equipment cannot effectively adjust the roller spacing to adapt to products with uneven wall thickness, resulting in reduced forming accuracy or material strip jamming.

Method used

By employing a combination of fixed and movable bearing seats, along with an elastic adjustment mechanism and servo motor control, the roller gap between the upper and lower rollers can be adjusted online. Through the cooperation of nitrogen springs and adjusting screws, the roller spacing can be adjusted in real time to adapt to the thickness variation of uneven wall thickness steel strips.

Benefits of technology

It enables smooth forming of roll-formed profiles with unequal thickness, improves forming accuracy, and reduces modification costs, making it suitable for automated cold bending forming production lines.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an unequal-thickness rolling profile forming device which comprises an upper roller and a lower roller, roller shafts of the upper roller and the lower roller are horizontally erected on a rolling support, the two ends of the roller shaft of the lower roller are supported on a fixed bearing seat, the two ends of the roller shaft of the upper roller are supported on a movable bearing seat, and the movable bearing seat is supported on the upper roller. The fixed bearing seat and the movable bearing seat are both installed on the rolling support, and the movable bearing seat can ascend and descend in the rolling support. An elastic adjusting mechanism for adjusting the position of the movable bearing seat is arranged above the movable bearing seat; the elastic adjusting mechanism comprises an adjusting frame, a nitrogen spring and an adjusting lead screw, the adjusting frame is fixedly connected to the upper portion of the movable bearing seat, and the adjusting lead screw is arranged on the upper portion of the adjusting frame. The rolling gap can be quickly adjusted on line along with the thickness change of steel strips with non-uniform wall thicknesses, so that the pressure borne by the steel strips with different wall thicknesses is stable, smooth on-line forming of rolling profiles with different wall thicknesses is realized, and the forming precision is improved.
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Description

Technical Field

[0001] This utility model relates to the field of cold bending forming technology, and in particular to a roll forming device for profiles with unequal thickness. Background Technology

[0002] Cold bending is a material-saving, energy-efficient, and highly effective metal sheet forming technology. Due to its advantages such as requiring fewer operators, long roller life, high material utilization, low mold development costs, and simple maintenance, cold bending has become one of the most effective metal forming technologies over the past half-century. In recent years, cold-bent steel products have been widely used as important structural components in many fields, including construction, automobile manufacturing, shipbuilding, electronics, and machinery manufacturing. However, the increasing demands of modern automobiles on components have led to the emergence of products with uneven wall thicknesses, posing a significant challenge to traditional roll forming equipment in their production.

[0003] Traditional roll forming equipment uses fixed roller positions and spacing based on the product's steel wall thickness, making it impossible to adjust the roller spacing as needed. The forming force of conventional roll forming of steel strip is below 60,000 N. For products with uneven wall thickness, adjusting the roller support gap based on the thinnest section may cause excessive pressure on the thicker sections, leading to material jamming and accumulation. Adjusting the gap based on the thickest section results in insufficient pressure on the thinnest part, reducing forming accuracy. Adjusting the gap based on the intermediate thickness still cannot prevent insufficient pressure on the thinnest section and material accumulation at the thickest. Therefore, solving the problem of smooth forming of products with uneven wall thickness has become a pressing issue for manufacturers. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a roll forming device for profiles with unequal thickness.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A roll forming apparatus for unequal thickness profiles includes an upper roller and a lower roller. The roller shafts of the upper roller and the lower roller are horizontally mounted on a roll forming support. The two ends of the roller shaft of the lower roller are supported by fixed bearing seats, and the two ends of the roller shaft of the upper roller are supported by movable bearing seats. Both the fixed bearing seats and the movable bearing seats are mounted on the roll forming support, and the movable bearing seats can be raised and lowered within the roll forming support. An elastic adjustment mechanism for adjusting the position of the movable bearing seats is provided above the movable bearing seats.

[0007] The elastic adjustment mechanism includes an adjustment frame, a nitrogen spring, and an adjustment screw. The adjustment frame is fixedly connected above the movable bearing seat and can slide up and down inside the roller support. A nitrogen spring is provided inside the adjustment frame. An adjustment screw for pushing the adjustment frame up and down is provided above the adjustment frame.

[0008] A further improvement of this utility model is that the adjusting frame includes a base plate and two side plates fixed at both ends of the base plate. The base plate is fixedly connected to the movable bearing seat, and the top ends of the two side plates extend horizontally toward the middle of the adjusting frame to form limiting end plates.

[0009] A further improvement of this utility model is that: an installation groove is opened in the center of the base plate, and the lower end of the nitrogen spring is fixed in the installation groove; the top end of the nitrogen spring is fixed to the spring fixing block, and the spring fixing block is located inside the adjustment frame and slides with the inner wall of the two side plates.

[0010] A further improvement of this utility model is that: the adjusting frame is further provided with a lead screw fixing block, the lead screw fixing block is arranged above the spring fixing block and fixedly connected to the spring fixing block, the bottom end of the adjusting lead screw is assembled on the lead screw fixing block, and the adjusting lead screw passes through the top cover of the roller support upward.

[0011] A further improvement of this utility model is that the top end of the adjusting screw is connected to the power output end of the servo motor.

[0012] A further improvement of this utility model is that a pressure sensor is installed at the bottom end of the adjusting screw, and the signal output end of the pressure sensor is connected to the signal input end of the CPU of the equipment automatic control system. The signal output end of the CPU in the equipment automatic control system is also connected to the signal input end of the servo motor.

[0013] The beneficial effects obtained by this utility model through the above technical solution are:

[0014] This invention provides a roll forming device for profiles with unequal thicknesses. It adopts a combination of fixed bearing seats and movable bearing seats, which allows the roll gap between the upper and lower rollers to be quickly adjusted online according to the thickness of the steel strip with uneven wall thickness. This ensures stable pressure between steel strips with different wall thicknesses, realizes smooth online forming of profiles with unequal thicknesses, and improves forming accuracy.

[0015] This invention improves upon existing traditional roller forming supports, eliminating the need for new casting molds, resulting in low design and modification costs. It can be widely applied to automated cold bending forming production lines. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the elastic adjustment mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram illustrating the application state of this utility model;

[0020] In the diagram, 1. Upper roller, 2. Lower roller, 3. Roller support, 3-1. Top cover, 4. Fixed bearing seat, 5. Movable bearing seat, 6. Adjusting frame, 6-1. Base plate, 6-2. Side plate, 6-3. Limiting end plate, 6-4. Spring fixing block, 6-5. Lead screw fixing block, 7. Nitrogen spring, 8. Adjusting lead screw, 9. Servo motor. Detailed Implementation

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

[0022] An unequal thickness roll forming device, such as Figure 1 , Figure 2 As shown, the system includes an upper roller 1 and a lower roller 2, with a rolling gap between them for the steel strip to pass through. The roller shafts of the upper roller 1 and the lower roller 2 are horizontally mounted between two left and right rolling supports 3. Specifically, a fixed bearing seat 4 and a movable bearing seat 5 are provided on both the left and right rolling supports. The two ends of the lower roller 2's roller shaft are supported by the fixed bearing seat 4, and the two ends of the upper roller 1's roller shaft are supported by the movable bearing seat 5. The fixed bearing seat 4 is fixedly connected to the rolling support 3 to ensure the stability of the lower roller 2's position. The movable bearing seat 5 is slidably connected to the rolling support 3, allowing it to move up and down slightly within the rolling support 3, thereby changing the position of the upper roller 1 and adjusting the roller gap. An elastic adjustment mechanism for adjusting the position of the movable bearing seat 5 is provided above it.

[0023] like Figure 2 , Figure 3As shown, the elastic adjustment mechanism includes an adjustment frame 6, a nitrogen spring 7, and an adjustment screw 8. The adjustment frame 6 is fixedly connected to the movable bearing seat 5. The adjustment frame 6 includes a base plate 6-1 and two side plates 6-2. The two side plates 6-2 are symmetrically installed at both ends of the base plate 6-1. The tops of the two side plates 6-2 extend horizontally towards the middle of the adjustment frame 6 to form limiting end plates 6-3. The base plate 6-1, side plates 6-2, and limiting end plates 6-3 together form a rectangular frame with an open top. The base plate 6-1 is slidably fitted with the roller support 3, and the side plates 6-2 are clearance fitted with the roller support 3. Inside the adjusting frame 6, there are spring fixing blocks 6-4 and lead screw fixing blocks 6-5 that are slidably connected to the side plate 6-2. The spring fixing blocks 6-4 and lead screw fixing blocks 6-5 are fixedly connected as one unit by screws. The spring fixing block 6-4 is located below the lead screw fixing block 6-5. A nitrogen spring 7 is set between the spring fixing block 6-4 and the base plate 6-1. The bottom of the adjusting lead screw 8 is fixed to the lead screw fixing block 6-5, and its upper end passes through the top cover 3-1 of the roller support 3 and is then connected to the power mechanism for transmission.

[0024] To ensure the installation stability of the nitrogen spring 7, a mounting groove is formed in the center of the base plate 6-1, and a recessed platform is formed in the center of the spring fixing block 6-4. The lower part of the nitrogen spring 7 is fixed in the mounting groove, and its upper end is inserted into the recessed platform of the spring fixing block 6-4 for fixation. The recessed platform of the spring fixing block 6-4 can limit and guide the lifting and lowering process of the nitrogen spring 7, ensuring its vertical lifting and lowering. This utility model specifically uses the nitrogen spring 7 as a rebound component, which is small in size, easy to assemble in the adjusting frame 6, and has a large elastic force and stable elastic force, which can improve the adjustment accuracy of the adjusting frame 6.

[0025] A stepped countersunk hole is provided in the center of the lead screw fixing block 6-5. The bottom end of the adjusting lead screw 8 is a boss-shaped part that mates with the stepped countersunk hole. The bottom of the adjusting lead screw 8 is embedded in the stepped countersunk hole and abuts against the spring fixing block 6-4. The adjusting lead screw 8 and the top cover 3-1 of the roller support 3 are connected by a thread. The vertical lifting and lowering of the adjusting lead screw 8 is achieved by rotation, which in turn drives the adjusting frame 6 to move up and down. A pressure sensor (not shown in the figure) is provided at the bottom of the adjusting lead screw 8. The signal output terminal of the pressure sensor is connected to the signal input terminal of the equipment automatic control system CPU. The signal output terminal of the equipment automatic control system CPU is connected to the signal input terminal of the servo motor 9. The power output terminal of the servo motor 9 is connected to the adjusting lead screw 8 for transmission. As the servo motor 9 works, the adjusting lead screw 8 rises and falls accordingly, which in turn drives the adjusting frame 6 and the movable bearing seat 5 to rise and fall in sequence, thereby realizing the adjustment of the roller spacing.

[0026] The CPU module of the equipment automatic control system can be any model that meets its input and output requirements, including but not limited to 87C196KC, 8051F340, etc. There is no mandatory limitation here, and the automatic control system of the existing equipment in the factory can also be modified.

[0027] The pressure sensor is located at the bottom of the adjusting screw 8. It can be directly installed on the bottom surface of the adjusting screw 8, or a groove can be made at the bottom of the adjusting screw 8 so that the pressure sensor can be embedded in the groove. However, the position of the detection end of the pressure sensor must be flush with the position of the bottom surface of the adjusting screw 8 to ensure accurate monitoring.

[0028] It should be noted that this utility model can also use manual twisting to adjust the lifting and lowering of the adjusting screw 8 to achieve rapid adjustment of the roller gap to meet the rolling requirements of steel strips of different thicknesses. However, for the rolling requirements of steel strips of unequal thickness, the manual adjustment method is less accurate and less efficient. But it can be applied to the rolling forming of steel strips of equal thickness. When the thickness of the profile steel strip changes, the roller gap can be adjusted manually in one go, and the adjusting screw can be locked with a lock nut. Compared with the original disassembly and adjustment, it is significantly more convenient.

[0029] Generally, the material thickness of unequal thickness roll-formed profiles ranges from 0.4mm to 4mm, and the adaptive adjustment gap between the lead screw fixing block 6-5 and the top of the side plate 6-2 is ≥4mm.

[0030] The working principle of this utility model is as follows:

[0031] When the steel strip passes through the gap between the rollers, it transmits pressure to the movable bearing seat, and then through the adjusting frame to the contact point between the spring fixing block and the adjusting screw. The pressure sensor detects the pressure data in real time and feeds it back to the CPU of the equipment's automatic control system. Based on the changes in the pressure value, the CPU drives the servo motor to control the position of the adjusting screw, thereby continuously adjusting the position of the upper roller and the pressure applied to the steel strip by the roller. This ensures that the forming force borne by the thickest strip during the rolling process is within the high and low limit range of the adjusting frame, ensuring forming accuracy while preventing the steel strip from jamming due to excessive pressure.

[0032] When the monitored pressure increases, it indicates that the steel strip thickness has increased, requiring upward adjustment of the movable bearing seat. At this time, the CPU of the automatic control system starts the servo motor, driving the adjusting screw upward, which in turn moves the screw fixing block upward. After contacting the limit end plate, it causes the adjusting frame and the movable bearing seat to move upward synchronously, increasing the roller gap and gradually decreasing the pressure. When the monitored pressure decreases, it indicates that the steel strip thickness has decreased, requiring downward adjustment of the movable bearing seat. At this time, the CPU of the automatic control system starts the servo motor, which lowers the adjusting screw, causing the screw fixing block to move downward. Through the transmission of force, the force passes sequentially through the spring fixing block, the nitrogen spring, and the base plate, causing the movable bearing seat to move downward, decreasing the roller gap and gradually increasing the pressure.

[0033] See Figure 4 During the roll forming process, each group of forming rollers is independently controlled, and the roller gap between each group of forming rollers is adjusted according to the thickness of the steel strip to ensure that the pressure of each group of forming rollers is stable.

[0034] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A roll forming apparatus for profiles of unequal thickness, comprising an upper roll (1) and a lower roll (2), wherein the roller shafts of the upper roll (1) and the lower roll (2) are horizontally mounted on a roll forming support (3), characterized in that: The lower roller (2) has its two ends supported by a fixed bearing seat (4), and the upper roller (1) has its two ends supported by a movable bearing seat (5). Both the fixed bearing seat (4) and the movable bearing seat (5) are mounted on a roller pressing bracket (3), and the movable bearing seat (5) can be raised and lowered within the roller pressing bracket (3). An elastic adjustment mechanism for adjusting the position of the movable bearing seat (5) is provided above the movable bearing seat (5). The elastic adjustment mechanism includes an adjustment frame (6), a nitrogen spring (7), and an adjustment screw (8). The adjustment frame (6) is fixedly connected above the movable bearing seat (5) and can slide up and down inside the roller support (3). The nitrogen spring (7) is provided inside the adjustment frame (6). An adjustment screw (8) for pushing the adjustment frame (6) up and down is provided above the adjustment frame (6).

2. The unequal thickness roll forming apparatus for profiles according to claim 1, characterized in that: The adjustment frame (6) includes a base plate (6-1) and two side plates (6-2) fixed at both ends of the base plate (6-1). The base plate (6-1) is fixedly connected to the movable bearing seat (5). The top of the two side plates (6-2) extends horizontally toward the middle of the adjustment frame (6) to form a limiting end plate (6-3).

3. The unequal thickness roll forming apparatus for profiles according to claim 2, characterized in that: An installation groove is provided in the center of the base plate (6-1), and the lower end of the nitrogen spring (7) is fixed in the installation groove; the top end of the nitrogen spring (7) is fixed to the spring fixing block (6-4), and the spring fixing block (6-4) is located inside the adjustment frame (6) and slides with the inner wall of the two side plates (6-2).

4. The unequal thickness roll forming apparatus for profiles according to claim 3, characterized in that: The adjusting frame (6) is also provided with a lead screw fixing block (6-5). The lead screw fixing block (6-5) is set above the spring fixing block (6-4) and fixedly connected to the spring fixing block (6-4). The bottom end of the adjusting lead screw (8) is mounted on the lead screw fixing block (6-5). The adjusting lead screw (8) passes through the top cover (3-1) of the roller support (3) upward.

5. The unequal thickness roll forming apparatus for profiles according to claim 4, characterized in that: The top of the adjusting screw (8) is connected to the power output end of the servo motor (9) via a transmission connection.

6. The unequal thickness roll forming apparatus for profiles according to claim 5, characterized in that: A pressure sensor is installed at the bottom of the adjusting screw (8). The signal output end of the pressure sensor is connected to the signal input end of the CPU of the equipment automatic control system. The signal output end of the CPU in the equipment automatic control system is also connected to the signal input end of the servo motor (9).