Multi-material composite vehicle body part forming method of intelligent temperature control rolling system

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The intelligent temperature-controlled roller pressing system heats and automatically adjusts the temperature of multi-material composite panels. Combined with the lateral adjustment mechanism, it solves the problem of cracking in multi-material composite panels during the roller pressing process, and achieves high-precision and uniform heating molding effect.

CN120901100APending Publication Date: 2025-11-07ANHUI MINGDA AUTOMOBILE TECH CO LTD

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Patent Information

Application Number: CN202510912472.2
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2025-07-03
Publication Date: 2025-11-07

Application Information

Patent Timeline

03 Jul 2025

Application

CN202510912472.2

07 Nov 2025

Publication

CN120901100A

IPC: B21B45/00; B21B37/74; B21B31/18; B21B31/20; B21B1/22

CPC: B21B45/004; B21B37/74; B21B31/18; B21B31/20; B21B1/22; Y02P10/20

Inventors: 陶忠平; 吴中雄

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Metal rolling stand details Temperature control device

Technology Topics

Temperature control Composite plate

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AI Technical Summary

Technical Problem

In existing technologies, multi-material composite sheets are prone to cracking during the roll forming process, resulting in poor forming quality.

Method used

An intelligent temperature-controlled roller pressing system is adopted to improve the plasticity and forming accuracy of multi-material composite sheets by heating them, and an automatic temperature sensor is used for temperature regulation. Roll forming is carried out in combination with lateral and pressing adjustment mechanisms.

Benefits of technology

It improves the forming accuracy and plasticity of multi-material composite panels, avoids the occurrence of cracks, ensures uniform heating during the rolling process, and adapts to the forming needs of panels of different sizes.

✦ Generated by Eureka AI based on patent content.

Patent Text Reader

Abstract

The invention relates to the technical field of vehicle body part forming, in particular to a multi-material composite vehicle body part forming method of an intelligent temperature control rolling system. The method comprises the steps that S1, uncoiling and flattening are conducted, specifically, the multi-material composite board is placed in a conveyor, residual stress of a steel belt is eliminated, and it is ensured that the multi-material composite board is flat; s2, guiding conveying is conducted, specifically, the leveled multi-material composite board is pushed through two guiding pinch rollers so that it can be guaranteed that the multi-material composite board does not warp during rolling; and S3, heating is conducted, specifically, the multi-material composite board is heated before being rolled, and the plasticity and forming precision of the multi-material composite board are improved. According to the method, the multi-material composite board is heated before being rolled, so that the plasticity and the forming precision of the multi-material composite board are improved, and the situation that in the prior art, the multi-material composite board is subjected to cold press forming, stress borne by the multi-material composite board during rolling is large, cracks are prone to occurring, and follow-up use is affected is avoided.

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Description

TECHNICAL FIELD

[0001] The present application relates to the forming technology field of vehicle body parts, and particularly relates to a multi-material composite vehicle body part forming method of an intelligent temperature control roller pressing system. BACKGROUND

[0002] The vehicle body refers to the part of the vehicle for carrying people and goods, and also refers to the whole vehicle, and mainly includes a vehicle body shell, a vehicle door, a vehicle window, a vehicle front panel, vehicle body interior and exterior decoration parts, vehicle body accessories, a seat, and ventilation, heating, cooling, air conditioning devices, etc.

[0003] At present, in the production process of vehicle body parts, multi-material composite plates are pressed by rollers in order to improve their use performance, but in the roller pressing process, the multi-material composite plates are cold pressed, which causes the multi-material composite plates to be subjected to a large stress during roller pressing, and cracks are easily generated, thereby affecting subsequent use. SUMMARY

[0004] The present application aims at solving the problems in the prior art and provides a multi-material composite vehicle body part forming method of an intelligent temperature control roller pressing system.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] The multi-material composite vehicle body part forming method of the intelligent temperature control roller pressing system comprises the following steps:

[0007] S1, uncoiling and flattening, placing the multi-material composite plate in the conveyor to eliminate the residual stress of the steel strip and ensure the flatness of the multi-material composite plate;

[0008] S2, guiding and conveying, pushing the flattened multi-material composite plate through two guide pinch rollers to ensure that the multi-material composite plate does not warp during roller pressing;

[0009] S3, heating, heating the multi-material composite plate before roller pressing to improve the plasticity and forming precision of the multi-material composite plate;

[0010] S4, roller pressing, placing the heated multi-material composite plate into a roller forming unit for roller forming;

[0011] S5, fixed-length cutting, cutting the roller-formed vehicle body part according to the standard length.

[0012] Preferably, in the step S3, a temperature automatic sensor is arranged during heating, which can automatically adjust the temperature of the multi-material composite plate according to the online forming data of the multi-material composite plate and according to the process preset model, and the application parameters are: the thickness of the multi-material composite plate ranges from 0.1 mm to 0.5 mm, the width ranges from 100 mm to 500 mm, and the heating temperature adjustment range is 200-400 DEG C; wherein, the heating temperature of the multi-material composite plate with a thickness of 0.5 mm-0.1 mm and a width of 100 mm-500 mm is 300 DEG C-500 DEG C, and so on, the larger the surface area of the plate strip, the higher the heating temperature, so as to ensure that the plate in the furnace is uniformly heated.

[0013] Preferably, in the step S4, the roll forming unit adopts a lower roller driving mode, is directly driven by a gear through a reducer driven by a motor, the rack adopts a two-roll forming rack, the screw transmission mode of the screwdown adjustment mechanism adopts a manual and two bearing seat independent adjustment mode, the lower roller is fixed, the roll forming unit is provided with a roller transverse adjustment mechanism, one side roller group is fixed and immovable in the transverse direction, and the other side roller group can be adjusted in the transverse direction, and the adjustment range is 450-1000 mm.

[0014] Preferably, in the step S4, the conveying speed of the multi-material composite plate is determined according to the rotating speed of the roller and the diameter of the roller, and specifically:

[0015] V = πDN

[0016] In the formula, N is the rotating speed of the roller (r / min), D is the diameter of the roller (mm), and V is the conveying speed of the multi-material composite plate (m / min).

[0017] Preferably, the conveying speed of the multi-material composite plate is 7 m / min.

[0018] Preferably, the lower roller is the driving roller, and the upper roller is the driven roller, the upper roller is driven by the friction between the upper roller and the multi-material composite plate, and the upper roller plays a role in compression and forming, the rated rotating speed of the motor is n = 720 r / min, and the speed ratio of the reducer is 56:1.

[0019] The present application has the following beneficial effects:

[0020] 1. The multi-material composite plate is heated before being rolled, the plasticity and forming precision of the multi-material composite plate are improved, and the multi-material composite plate is not cold-pressed and formed in the prior art, which leads to that the stress on the multi-material composite plate during rolling is large, cracks are easily generated, and the subsequent use is affected.

[0021] 2. The temperature automatic sensor is arranged, the larger the surface area of the multi-material composite plate, the higher the heating temperature, so as to ensure that the plate in the furnace is uniformly heated, and the temperature control of the multi-material composite plate is automatically realized.

[0022] 3. Equipped with a lateral adjustment mechanism and a pressing adjustment mechanism, it can roll-form multi-material composite panels of different sizes. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described in detail below. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] A method for forming multi-material composite body parts using an intelligent temperature-controlled roller pressing system includes the following steps;

[0025] S1. Uncoiling and leveling: Place the multi-material composite board in the conveyor to eliminate residual stress in the steel strip and ensure that the multi-material composite board is flat.

[0026] S2. Guiding and conveying: The leveled multi-material composite board is pushed through two guiding and pinching rollers to ensure that the multi-material composite board does not warp during rolling.

[0027] S3. Heating: Heating the multi-material composite board before rolling improves its plasticity and forming accuracy.

[0028] S4. Roll forming: The heated multi-material composite board is placed into the roll forming unit and rolled into shape.

[0029] S5. Fixed-length cutting: Cut the roll-formed body parts to the standard length.

[0030] In step S3, an automatic temperature sensor is set during the heating process. This sensor can automatically adjust the sensing temperature of the multi-material composite plate based on the online forming data of the multi-material composite plate and according to the preset process model. Its application parameters are: the thickness range of the multi-material composite plate is 0.1mm-0.5mm, the width range is 100mm-500mm, and the heating temperature adjustment range is 200-400℃. Among them, the heating temperature of the multi-material composite plate with a thickness of 0.5mm-0.1mm and a width of 100mm-500mm is 300℃-500℃, and so on. The larger the surface area of the multi-material composite plate, the higher the heating temperature, thereby ensuring that the plate material in the furnace is heated evenly.

[0031] In step S4, the roll forming machine group adopts a lower roller driving mode, is directly driven by a gear through a reducer driven by a motor, the frame adopts a two-roller forming frame, the screw transmission mode of the screw down adjustment mechanism is independently adjusted by two bearing seats, the lower roller is fixed, the roll forming machine group is provided with a roller transverse adjustment mechanism, one side roller group is fixed and immovable in the transverse direction, and the other side roller group can be adjusted in the transverse direction, and the adjustment range is 450-1000mm.

[0032] In step S4, the conveying speed of the multi-material composite plate is determined according to the rotational speed of the roller and the roller diameter, and specifically:

[0033] V = πDN

[0034] In the formula, N is the rotational speed of the roller (r / min), D is the roller diameter (mm), and V is the conveying speed of the multi-material composite plate (m / min).

[0035] The conveying speed of the multi-material composite plate is 7m / min.

[0036] The lower roller is the driving roller, and the upper roller is the driven roller, the upper roller is driven by the friction between the upper roller and the multi-material composite plate, and the upper roller plays a role in compression and forming, the rated speed of the motor is n = 720r / min, and the speed ratio of the reducer is 56:1.

[0037] In the method, the multi-material composite plate is heated before being rolled, the plasticity and forming precision of the multi-material composite plate are improved, and the cold pressing forming of the multi-material composite plate in the prior art is avoided, which leads to that the stress on the multi-material composite plate during rolling is large, cracks are easily generated, and the subsequent use is affected.

[0038] Meanwhile, the temperature automatic sensor is provided, the larger the surface area of the multi-material composite plate is, the higher the heating temperature is, so that the plate in the furnace is uniformly heated, and the temperature control of the multi-material composite plate is automatically realized.

[0039] And the transverse adjustment mechanism and the screw down adjustment mechanism are provided, so that the multi-material composite plates of different sizes can be roll formed.

[0040] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A method for forming a multi-material composite body part of an intelligent temperature controlled roll system, characterized in that, It comprises the following steps: S1, uncoiling and flattening, placing the multi-material composite plate in the conveyor, eliminating the residual stress of the steel strip, and ensuring the flatness of the multi-material composite plate; S2, guiding and conveying, pushing the flattened multi-material composite plate through two guide pinch rollers to ensure that the multi-material composite plate does not warp during rolling; S3, heating, heating the multi-material composite plate before rolling to improve its plasticity and forming precision; S4, rolling, placing the heated multi-material composite plate into the rolling forming unit for rolling and forming; S5, fixed length cutting, cutting the rolled and formed body part according to the standard length.

2. The method of claim 1, wherein the method further comprises: In the step S3, a temperature automatic sensor is provided during the heating process. The sensor can automatically adjust the sensing temperature of the multi-material composite plate according to the online forming data of the multi-material composite plate and according to the process preset model. The application parameters are: the thickness of the multi-material composite plate is 0.1mm-0.5mm, the width is 100mm-500mm, and the heating temperature adjustment range is 200-400℃; wherein, the heating temperature of the multi-material composite plate with a thickness of 0.5mm-0.1mm and a width of 100mm-500mm is 300℃-500℃, and so on. The larger the surface area of the multi-material composite plate, the higher the heating temperature, so as to ensure uniform heating of the plate in the furnace.

3. The method of claim 1, wherein the method further comprises: In the step S4, the rolling forming unit adopts a lower roller driving mode, which is directly driven by a gear through a reducer driven by a motor. 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