Welding joint pretreatment device for production of electric vehicle frame

By designing an automated material handling plate and rotating wheel assembly, the problem of insufficient manual adjustment accuracy at the weld joints of steel pipes in electric vehicle frames was solved, enabling precise positioning and fixing of the steel pipe ends, thus improving welding efficiency and installation accuracy.

CN224373277UActive Publication Date: 2026-06-19CHANGZHOU FEITENG AUTOCYCLE FITTINGS MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU FEITENG AUTOCYCLE FITTINGS MFG CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The welding joints of the steel pipes in the electric vehicle frame are not precise enough when manually adjusted, resulting in offset after welding and affecting the installation accuracy.

Method used

Design an adjustment assembly including a material-grabbing plate, a rotating wheel, and a clamping plate. The steel pipe end position is adjusted by automatic material grabbing and the rotating wheel, and precise positioning and fixing are achieved by motor drive.

Benefits of technology

This improved the accuracy and efficiency of weld joint pretreatment, ensuring that the steel pipe does not shift after welding, and enhancing the installation accuracy of the electric vehicle frame.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224373277U_ABST
    Figure CN224373277U_ABST
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Abstract

This utility model relates to a welding joint pretreatment device for electric vehicle frame production, including a workbench and an adjustment assembly mounted on the workbench. The adjustment assembly includes a material-picking plate, a rotating wheel, and a clamping plate. The material-picking plate is movably mounted on one side below the workbench. A through groove is formed on the surface of the workbench, and two rotating wheels are rotatably mounted inside the through groove. Two clamping plates are provided on the side of the through groove away from the material-picking plate, and the two clamping plates are movably mounted on the surface of the workbench. The end of the material-picking plate is an arc-shaped plate, with the concave surface of the arc-shaped plate facing upwards on the workbench. A fitting plate is fixedly mounted on the edge of the arc-shaped plate. A movable groove is formed on one side of the workbench surface, which can automatically pick up materials from the steel pipe collection point. The rotating wheel automatically adjusts the end position of the steel pipe. The material-picking plate has both picking and fixing functions, improving work efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of electric vehicle manufacturing technology, and in particular to a welding joint pretreatment device for electric vehicle frame production. Background Technology

[0002] The steel pipes used in electric vehicle frames require pre-treatment of the weld joints. The cutting machine first cuts the ends of the steel pipes into a V-shape. During the cutting process, the ends of the steel pipes will deform under pressure. Therefore, the weld joints need to be adjusted before welding. Operators manually adjust the ends of the steel pipes by inserting a conical mold into the pipe opening to round it. However, the operator's manual operation lacks precision. When the mold is inserted into the steel pipe, the angle at the weld joint is inconsistent with the overall angle of the steel pipe, resulting in a misalignment during subsequent installation. Utility Model Content

[0003] The purpose of this application is to provide a welding joint pretreatment device for electric vehicle frame production, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A welding joint pretreatment device for electric vehicle frame production includes a workbench and an adjustment assembly mounted on the workbench. The adjustment assembly includes a material-taking plate, rotating wheels, and a clamping plate. The material-taking plate is movably mounted below one side of the workbench. A through groove is formed on the surface of the workbench, and two rotating wheels are rotatably mounted inside the through groove. Two clamping plates are provided on the side of the through groove away from the material-taking plate, and the two clamping plates are movably mounted on the surface of the workbench. The end of the material-taking plate is an arc-shaped plate, with the concave surface of the arc-shaped plate facing upwards on the workbench. A bonding plate is fixedly mounted on the edge of the arc-shaped plate of the material-taking plate.

[0006] Preferably, a movable groove is formed through one side of the workbench surface, and a movable plate is movably installed inside the movable groove. A motor is fixedly installed on the bottom surface of the movable plate, and the output end of the motor is fixedly connected to the end of the material handling plate. A cylinder is fixedly installed on the bottom surface of the workbench, and the output end of the cylinder is fixedly connected to the bottom surface of the movable plate. Sliding grooves are formed on the inner walls of both sides of the movable groove, and sliders are fixedly installed on both sides of the movable plate, with the sliders embedded in the sliding grooves.

[0007] Preferably, two motors are fixedly installed on the bottom surface of the workbench, and the output ends of the motors are fixedly connected to the center of the rotating wheel. The arc edge of the rotating wheel is flush with the surface of the workbench. Two motors are fixedly installed on the bottom surface of the workbench, and the output ends of the motors are fixedly connected to the pressure plate through the workbench.

[0008] The beneficial effects of this utility model are: by setting an adjustment component, it can automatically pick up materials from the steel pipe collection point, use a rotating wheel to automatically adjust the end position of the steel pipe, and the material picking plate has both picking and fixing functions, thus improving work efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the bottom structure of the workbench in this utility model;

[0011] Figure 3 This is a schematic diagram of the working state structure of the movable plate in this utility model;

[0012] Figure 4 In this utility model Figure 3 A magnified schematic diagram of the structure of region A;

[0013] Figure 5 This is a schematic diagram of the working state of the adjustment component in this utility model.

[0014] In the diagram: 1. Workbench; 2. Through groove; 3. Pressing plate; 4. Rotary wheel; 5. Movable plate; 6. Material picking plate; 7. Motor 1; 8. Adhesive plate; 9. Slide groove; 10. Movable groove; 11. Cylinder; 12. Motor 2; 13. Motor 3. Detailed Implementation

[0015] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "top," and "bottom," are only for reference to the accompanying drawings. Therefore, the directional terms used are for the purpose of explaining and understanding this utility model, and not for limiting this utility model.

[0016] like Figure 1-5 The device shown is a welding joint pretreatment device for electric vehicle frame production. It includes a workbench 1 and an adjustment assembly installed on the workbench 1. The adjustment assembly includes a material picking plate 6, a rotating wheel 4 and a clamping plate 3. The material picking plate 6 is movably installed on the lower side of one side of the workbench 1. A through groove 2 is opened through the workbench 1. Two rotating wheels 4 are rotatably installed inside the through groove 2. Two clamping plates 3 are provided on the side of the through groove 2 away from the material picking plate 6. The two clamping plates 3 are movably installed on the workbench 1. The end of the material picking plate 6 is an arc-shaped plate with the concave surface facing the upper part of the workbench 1. A bonding plate 8 is fixedly installed on the edge of the arc-shaped plate of the material picking plate 6.

[0017] A movable groove 10 is formed through one side of the workbench 1. A movable plate 5 is movably installed inside the movable groove 10. A motor 7 is fixedly installed on the bottom surface of the movable plate 5. The output end of the motor 7 is fixedly connected to the end of the material handling plate 6. A cylinder 11 is fixedly installed on the bottom surface of the workbench 1. The output end of the cylinder 11 is fixedly connected to the bottom surface of the movable plate 5. Sliding grooves 9 are formed on the inner walls of both sides of the movable groove 10. Sliding blocks are fixedly installed on both sides of the movable plate 5 and are embedded in the sliding grooves 9.

[0018] Two motors 12 are fixedly installed on the bottom surface of the workbench 1. The output end of the motors 12 is fixedly connected to the center of the rotating wheel 4. The arc edge of the rotating wheel 4 is flush with the table surface of the workbench 1. Two motors 13 are fixedly installed on the bottom surface of the workbench 1. The output end of the motors 13 passes through the workbench 1 and is fixedly connected to the pressure plate 3.

[0019] Example: Workbench 1 is placed on one side of the steel pipe rack. Cylinder 11 under workbench 1 is activated, pushing movable plate 5 a certain distance towards the rack. Movable plate 5 slides in movable groove 10, and its slider slides inside slide groove 9. The arc plate of picking plate 6 moves to below the steel pipe. Then, motor 7 drives picking plate 6 to flip, and picking plate 6 removes the steel pipe from the steel pipe rack. Then, picking plate 6 carries the steel pipe to the workbench 1, placing the steel pipe above the through groove 2. The outer wall of the steel pipe is flush with the rotating wheel. The outer edge of the 4 is attached. The operator observes the position of the steel pipe opening and the external flaring tool. The rotating wheel 4 is driven to rotate by motor 12. The rotation of the rotating wheel 4 drives the steel pipe to move through friction, thereby adjusting the position of the steel pipe opening. After the steel pipe is adjusted to the appropriate position, motor 13 drives the pressure plate 3 to rotate. After the pressure plate 3 rotates, it presses the attaching plate 8 onto the table surface of the workbench 1. The attaching plate 8 drives the material picking plate 6 to press down on the steel pipe, so that the steel pipe is fixed on the table surface of the workbench 1, which makes it convenient for the flaring tool to operate on the end of the steel pipe.

[0020] It should be noted that the parts not covered in this utility model are the same as or can be implemented using existing technology; the various drives in this utility model can be implemented by corresponding power structures such as cylinders, oil cylinders, electric cylinders, and motors in conjunction with connecting rods, guide rods, etc., and are not limited to the structures described in the specification and the drawings.

Claims

1. A welding joint pretreatment device for electric vehicle frame production, comprising a workbench (1) and an adjustment assembly mounted on the workbench (1), characterized in that: The adjustment assembly includes a material taking plate (6), a rotating wheel (4), and a pressing plate (3). The material taking plate (6) is movably installed below one side of the workbench (1). A through groove (2) is provided on the table surface of the workbench (1). Two rotating wheels (4) are rotatably installed inside the through groove (2). Two pressing plates (3) are provided on the side of the through groove (2) away from the material taking plate (6). The two pressing plates (3) are movably installed on the table surface of the workbench (1). The end of the material taking plate (6) is an arc plate with the concave surface facing the top of the workbench (1). A bonding plate (8) is fixedly installed on the edge of the arc plate of the material taking plate (6).

2. The pretreatment device for weld joints in electric vehicle frame production according to claim 1, characterized in that: A movable groove (10) is provided through one side of the workbench (1). A movable plate (5) is movably installed inside the movable groove (10). A motor (7) is fixedly installed on the bottom surface of the movable plate (5). The output end of the motor (7) is fixedly connected to the end of the material picking plate (6). A cylinder (11) is fixedly installed on the bottom surface of the workbench (1). The output end of the cylinder (11) is fixedly connected to the bottom surface of the movable plate (5).

3. The pretreatment device for weld joints in electric vehicle frame production according to claim 2, characterized in that: The inner walls on both sides of the movable groove (10) are provided with sliding grooves (9), and the two sides of the movable plate (5) are fixedly installed with sliders, which are embedded in the sliding grooves (9).

4. The pretreatment device for weld joints in electric vehicle frame production according to claim 1, characterized in that: Two motors (12) are fixedly installed on the bottom surface of the workbench (1). The output end of the motor (12) is fixedly connected to the center of the rotating wheel (4). The arc edge of the rotating wheel (4) is flush with the table surface of the workbench (1).

5. The pretreatment device for weld joints in electric vehicle frame production according to claim 1, characterized in that: Two motors (13) are fixedly installed on the bottom surface of the workbench (1). The output end of the motors (13) passes through the workbench (1) and is fixedly connected to the pressure plate (3).