详情描述

Introduction to SMC Online Blending System

I. System Overview

The SMC Online Mixing System is a core module in the SMC sheet material production line, designed for the real-time, precise preparation of resin paste (resin + filler + additives) and direct delivery to the fiber impregnation section. This system replaces the traditional batch mixing method, significantly enhancing production efficiency and proportion stability, making it a key equipment for modern SMC production.

II. System Composition and Workflow

Raw Material Measurement Unit

  • Function:
  • Resin Matrix (unsaturated polyester/epoxy) Quantitative Supply
  • Filling Materials (Calcium Carbonate, Talc, etc.) Dynamic Weighing
  • Additives (such as hardeners, thickeners, color pastes, etc.) are micro-injected.
  • Technical Features:
  • Utilizing a weightless scale or a high-precision gear pump, error ≤ ±0.5%
  • Supports digital formula management, one-click switching

2. Dynamic Mixing Unit

  • Feature:
  • Instant homogeneous blending of multi-component raw materials
  • Eliminate bubbles and undispersed particles
  • Technical Features:
  • Static mixer or high-speed dynamic mixing head available
  • Mixed uniformity ≥ 99%, no dead corner design

3. Temperature Control Unit

  • Feature:
  • Thermally controlled resin paste (usually 25-35°C)
  • Prevent premature gelling
  • Technical Features:
  • Plate heat exchanger or circulating water bath temperature control
  • ±1°C accuracy

4. Conveyance and Feedback System

  • Feature:
  • Mixed resin paste is continuously pumped to the impregnation zone.
  • Real-time traffic monitoring and closed-loop regulation
  • Technical Features:
  • Variable-frequency screw pump stable conveyance
  • PLC Auto-Compensates Viscosity Fluctuations