The vertical synchronous cutting machine is a complex and meticulous process involving multiple key steps and precautions to ensure the quality of the final product and the production rate. The following are the main matters needing attention when operating a vertical synchronous cutting machine:
I. Clarify product requirements
Product specifications and dimensions: Thoroughly understand the specific requirements of the customer for the specifications, dimensions, shapes, etc. of the extruded products, and ensure that the mold design can accurately meet these demands.
Material type and properties: Understand the type and performance characteristics of the plastic materials used, such as melting point, fluidity, shrinkage rate, etc., so as to make corresponding adjustments in mold design.
Ii. Mold Design
Correctness of mold structure:
Flow channel design: Materials can flow smoothly into the mold, avoiding dead corners and retention areas to reduce material waste and ensure product quality.
Compression ratio and shear force: According to the characteristics of plastic materials, the compression ratio and shear force of the mold should be correctly designed to achieve the ideal plasticizing effect.
Mold strength and rigidity: Ensure that the mold has sufficient strength and rigidity to withstand the pressure and impact during the extrusion process.
Dimensional accuracy and tolerance control
The dimensional tolerance of the extrusion die needs to be controlled within the correct range, usually within ±0.01mm, to ensure the dimensional accuracy of the extruded product.
For critical dimensions, processing equipment and technologies with good precision should be adopted for processing and inspection.
Cooling system design
The correct cooling system can control the mold temperature, reduce thermal deformation, and improve the precision and service life of the mold.
When designing, the flow rate and velocity of the cooling medium as well as the layout of the cooling channels need to be taken into consideration.
Iii. Material Selection
Wear resistance and corrosion resistance: The mold material should have high wear resistance and corrosion resistance to withstand the friction and corrosion during the extrusion process.
Thermal stability: Extrusion molds often operate in high-temperature environments, so the material should have good thermal stability.
Processing performance: The material should be easy to process and polish to reduce manufacturing costs and increase production rate.
Commonly used mold materials include tool steel, steel, cemented carbide, etc. The specific selection should be made based on a comprehensive consideration of product requirements and mold usage conditions.
Iv. Manufacturing Process
High-precision processing: By using high-precision CNC machine tools, electrical discharge machining and laser processing and other manufacturing technologies, the processing accuracy and surface quality of each component of the mold are determined.
Heat treatment process: Through heat treatment processes such as annealing, quenching and tempering, the hardness and wear resistance of the mold are enhanced, and the service life of the mold is prolonged.
Assembly process: The assembly accuracy of each component of the mold should be ensured to avoid loosening or misalignment, thereby determining the stability and performance of the mold.
V. Mold Testing and Debugging
Mold trial process: After the mold is manufactured, a mold trial is required to verify the design and production capacity of the mold. During the mold test process, all parameters such as extrusion speed, temperature and pressure should be recorded in detail.
Problem analysis and resolution: For issues that arise during the mold trial process, such as dimensional deviations and poor surface quality, timely analysis and resolution are necessary. The mold needs to be adjusted and optimized when necessary.
Vi. After-sales Service and Maintenance
Technical support and training: Provide customers with the necessary technical support and training to ensure that they can use and maintain the molds correctly.
Regular maintenance and care: Regularly inspect and maintain the molds, promptly identify and address potential issues, and extend the service life of the molds.
Vii. Other Precautions
Consider the shrinkage and expansion of the product: Plastic undergoes shrinkage and expansion during the extrusion process. This factor should be fully taken into account in the mold design to ensure the dimensional accuracy of the extruded product.
Design adjustment mechanism: To facilitate the adjustment of parameters such as extrusion force and extrusion speed, the mold should be designed with an adjustment mechanism to enhance the flexibility and speed of production.
Consider the replacement and upgrade of molds: With the continuous changes in product requirements and the continuous progress of production technology, the issue of mold replacement and upgrade needs to be considered to meet new production demands.
To sum up, the vertical synchronous cutting machine is a complex process involving multiple aspects. To determine the quality and production rate of the later products, sufficient attention should be paid to aspects such as product requirements, mold design, material selection, manufacturing processes, mold testing and debugging, as well as after-sales service and maintenance.
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