Multihead Weigher-Fresh Box Canning System

1. Product Overview

The Multihead Weigher (combination weigher) is the metering heart of a fresh-food box and can filling line. It combines peppers, eggplant, leafy greens, strawberries, blueberries and other produce into precise target weights at high speed, delivering product batches of constant weight and intact form to the packing stage. Fresh produce is fundamentally different from snack foods and puffed products: it has high moisture content, wet slippery surfaces, a tendency to cling, delicate flesh and wide individual-piece weight variation. A weigher for this duty cannot chase speed alone — it must be accurate, stable and gentle under wet conditions. This machine is redesigned for high-moisture vegetables and fruit: hoppers and pans are entirely food-grade stainless steel with anti-corrosion and anti-stick finishing, and the scale body has complete waterproof sealing and drainage structures, so it operates reliably in wet areas that are washed down often, with weighing sensors whose accuracy does not drift under humidity — every batch stands up to re-checking.

2. Anti-Corrosion and Anti-Stick Design for Wet Produce

Wet vegetables and fruit carry surface water and juice. On ordinary carbon steel or lower-grade stainless bodies, corrosion sets in quickly, and dried juice forms an adhesive layer on the hopper walls, causing the classic error of "weighing one hopper, losing half to sticking." Every product-contact part of this weigher is food-grade stainless steel; inner walls are mirror-polished with optional anti-stick surface treatment so water films and juice cannot persist. Hoppers are deep-drawn with large radii and minimal edges, emptying cleanly the moment they tilt, leaving no residue dead spots. Structural parts such as the frame and pan supports receive the same anti-corrosion treatment, and all fasteners are stainless steel, so rust water can never contaminate product. The exterior is shaped for easy drainage, the base holds no standing water, and every cable entry is waterproof-sealed — even when the whole machine faces high-pressure water washing, the internal weighing and control systems remain safe.

3. Accurate Weighing Despite Piece Variation and Moisture Fluctuation

Fresh produce varies far more in piece weight than industrial granules: one strawberry may weigh several times another, and even a single batch of leafy greens changes in moisture content depending on draining time. This machine uses multi-hopper combination weighing: in every cycle it automatically searches across a dozen or more weigh hoppers for the hopper group whose combined weight is closest to the target, using "select the best of many combinations" to absorb piece-to-piece variation. The control system tracks actual discharge weights in real time and self-learns corrections, automatically compensating systematic error caused by moisture fluctuation and material adhesion. Whether weighing berries to gram-level accuracy or larger portions of mixed vegetables, the weigher maintains stable giveaway control, minimizing raw-material loss from over-giving while every finished portion meets its target weight.

4. Gentle Feeding and Low-Damage Discharge

For fragile produce such as strawberries, blueberries and salad leaves, damage is waste. Impact is controlled from the feed source: the drops between the center hopper and each level of pans are optimized so product descends in a spread, sliding manner rather than falling freely. Hopper opening angle and discharge timing are adjustable so product pours out rather than being ejected, then merges through a buffered cone into the box/can packer. For delicate berries, a low-speed discharge mode and soft buffer liners are available as options, visibly reducing the percentage of crushed or cracked fruit and directly protecting both your raw-material value and the appearance of the finished pack.

5. Coordination Within the Fresh-Food Box & Can Filling System

The multihead weigher receives the even thin product bed from the vibrate feeder above and delivers precisely combined batches to the box/can packer below: the vibrate feeder guarantees continuous stable supply, the weigher performs precise combination, and the packer fills boxes or cans in step with the weigher's discharge rhythm, while the bucket elevator and stainless steel platform provide front-end feeding and operator access support. The whole line is interlocked with self-adapting speeds, and weighing data can be uploaded and recorded by the system, making the weight of every box and can traceable — a solid basis for quality management and customer audits.

6. Applicable Products

Suitable for mixed vegetables (peppers, eggplant, tomatoes), berries (strawberries, blueberries), leafy greens such as lettuce salad leaves, mixed beans and any high-moisture, fragile fruit or vegetable requiring accurate portioning with low damage — as well as washed ready-to-cook vegetables and fresh salad ingredients.

7. Hygiene and Safety

Designed to FSMA sanitary design principles: no dead corners, no retention surfaces, easy strip-down cleaning with quick-release hoppers and pans, and full waterproof sealing that allows whole-machine rinsing in wet areas. Safety guard doors interlock with moving parts to prevent injury; electrical systems are waterproof-isolated and reliably grounded. The philosophy of "Hygiene First · Safety First" runs through design, manufacturing and inspection. Our engineering team, founded in 2019 with more than 10 years of industry experience, delivers sanitary metering equipment you can defend in an audit.

8. Maintenance and Cleaning

Quick-release hoppers and guide pans make deep cleaning a matter of minutes; daily hygiene needs only fresh-water rinsing after the shift. Waterproof bearings and sealing reduce wet-area failure rates, and the control system provides self-diagnostics and recipe management — one-touch parameter switching when changing products. Maintenance stays simple and effective, and the weigher keeps stable weighing performance through long continuous production runs.

9. Selection and Service

Number of heads, hopper volume, weighing range and accuracy class can be configured to your product characteristics and capacity targets, with full line-interlock control available. Please send us your product samples, target weight and capacity data — our engineers will match the right multihead weigher solution and provide installation, commissioning, operator training and long-term after-sales support.