Advanced Double-Layer Die Pipe Bending Machine: Working Principle and Operational Details

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Jilin Weiguang Electronic Technology Co., Ltd. has introduced an advanced Double-layer die pipe bending machine designed to meet the growing demands of modern tube forming industries. This machine combines high precision, flexibility, and durability. By adopting a Double-layer die structure, it achieves superior bending accuracy, consistent radius control, and minimal material deformation.


Working Principle of the Double-Layer Die Pipe Bending Machine

The Double-layer die pipe bending machine operates by using two coordinated dies—an outer die and an inner die—that work together under hydraulic, mechanical, or servo-driven actuation. This synchronized system ensures precise bending while protecting the pipe’s cross-sectional integrity. The process includes several key stages:

  1. Setup and Preloading

  • The pipe is placed between the outer and inner dies of the Double-layer die pipe bending machine.

  • The outer die secures and guides the pipe, while the inner die supports the inside to prevent collapse or wrinkling.

  • Actuation and Bending Initiation

    • The drive system (hydraulic or servo) powers the bending motion.

    • The outer die holds the pipe’s contour, and the inner die provides internal support, ensuring a controlled bending process.

  • Bending Stage

    • The Double-layer die pipe bending machine bends the pipe gradually along a predefined radius.

    • The dual action of the dies reduces compression on the inner wall and tension on the outer wall, resulting in smooth and accurate bends.

  • Radius and Shape Adjustment

    • The inner die of the Double-layer die pipe bending machine can be adjusted or replaced to achieve different bend radii or shapes.

    • This flexibility allows the same machine to handle multiple pipe sizes and bending requirements efficiently.

  • Release and Retracting

    • Once the bending operation is completed, the dies release the pipe.

    • The finished pipe can then undergo quality inspection or further processing.


    Key Advantages of the Double-Layer Die Pipe Bending Machine

    • Superior Structural Integrity: The double-layer die design ensures pipes maintain roundness with minimal deformation.

    • High-Quality Finish: Reduced risk of wrinkling, flattening, or cracking.

    • Versatile Applications: Suitable for bending steel, stainless steel, aluminum, and copper pipes.

    • Flexible Operations: Adjustable inner dies allow for multiple bending radii in one setup.

    • Efficient and Reliable: Hydraulic or CNC-controlled actuation guarantees repeatability and consistent results.

    The Double-layer die pipe bending machine from Jilin Weiguang Electronic Technology Co., Ltd. is a powerful solution for industries requiring precision tube forming. By combining the strength of a double-layer die system with advanced hydraulic or servo control, it delivers accurate bends, smooth surfaces, and reliable performance. This makes it a valuable asset across automotive, furniture, construction, and HVAC industries where bending precision and quality are critical.

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    Zhangjiagang Zhongrui Automation Equipment Co., Ltd.

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