Multi-Head Weigher – High Precision Automatic Weighing Machine

A multi-head weigher (also known as a combination weigher) is a high-efficiency, automated industrial weighing machine designed for fast and precise batching of products in packaging lines. Widely used across the food, hardware, pharmaceutical, and consumer goods industries, it solves the core problem of traditional single-head weighing—slow speed and high weight error—by leveraging multiple independent weighing hoppers and intelligent combination algorithms.

Core Performance Features

1. High – precision weighing: Equipped with high – sensitivity load cells (some with a 3 – year warranty) and intelligent multi – sampling stabilization algorithms, the weighing error can be as low as 0.5g, effectively minimizing product giveawayIshida Europe. Weighing ranges are diverse, from micro – weighing (0.5g – 200g) to heavy – duty (up to 10kg), and they meet OIML standardsIshida Europe.
2. High – speed batching: The number of weighing heads typically ranges from 10 to 32. General models can achieve 60-140 packs per minute (PPM), and advanced mix weighers can reach up to 440 PPM, with some heavy – duty models hitting 240 PPM, ensuring high production efficiencyIshida Europe.
3. Combination weighing logic: Multiple weighing hoppers combine loads to reach the target weight, which improves the probability of hitting the target and reduces material waste compared with single – head weighing. Some models are equipped with memory buckets to enhance combination efficiency and accuracy.

Mechanical & Structural Design

1. Food – grade hygiene: Product – contact parts are made of 304/316 stainless steel. Many models have IP65/IP69K waterproof ratings, facilitating high – pressure cleaning. They adopt a tool – less disassembly design for fast cleaning and changeovers, complying with food safety regulationsIshida Europe.
2. Modular & durable: Modularized electrical boards and interchangeable components simplify maintenance and reduce downtime. Angled surfaces minimize bacterial accumulation, and some models have break – proof hoppers (inclined design) for fragile items like fruits and biscuits.
3. Flexible feeding systems: There are various feeding methods such as vibratory feeding (for dry/IQF products), screw feeding (for sticky/fresh products), and linear feeding (for small packs), ensuring stable product flow and preventing blockagesMarel.

Intelligent Control & Operation

1. User – friendly HMI: A touch – screen interface supports multi – language settings and 100+ preset parameter groups, enabling quick switching between different products and target weights. It also offers a debugging interface and visual fault alarms for easy troubleshooting.
2. Smart functions: Self – learning control adjusts parameters based on product characteristics; some models have counting functions and multi – dump options. Optional multi – job software allows handling up to 6 concurrent tasks and setting job prioritiesMarel.
3. Data & connectivity: It can be integrated with upstream/downstream packaging lines (like baggers, tray sealers) and supports data export for production tracking and quality control.