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Multihead Weigher for Frozen Products

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Multihead Weigher for Frozen Products 

Weigher with 14 Heads and 2.5 Litre Dimple Buckets

14 Head

2.5 Litre Buckets

316 Stainless Steel

Siemens PLC 

All components Schneider, Danfoss, Airtac 

Can be supplied with a timing hopper

7 Inch Touch Screen 

Single Weigh Range - 10-1200 Grams

Max Weight Range - 6500 Grams

100 Preset Programs

Max Speed - 120 Bags Per Min

Machine size 1300mm x 11200mm x 1380mm 

Single Phase

Can be set up for accurate weights

Can be set up with a Ready Meal Line or over a VFFS Bag Sealer

Multihead Weighers bag products with accurate weights instead of using a linear weigher.

Suitable for weighing, portioning and packing fresh and frozen products including Chicken Nuggets, Chicken Burgers, Chips, Sausages, Seafood etc.

Multihead Weighers can be used in many sectors in the food industry, for weighing products including - Salad Leaves, Poultry Meat, Fish Products, Dry Goods, Vegetables, Petfood Products, Sweets, Confectionary, Vegetable Products, Crisps, Nuts, Cereals and many more.

The 14 head Multihead Weigher has an additional 4 heads than the 10 head Multihead Weigher, giving a higher throughput. Ideal for contract packers and food manufacturing companies.

Multihead Weighers are also suitable for weighing non-food products including screws, nails, coins etc.

The princilpe of a MultiHead Weigher 

At a basic level, a multi-head weigher takes bulk product and weighs it into smaller increments according to the weights programmed into its software. 

That bulk product is fed into the scale through the infeed funnel at the top, generally via an incline conveyor or a bucket elevator

A multihead weigher is a fast, accurate and reliable weighing machine, used in packing both food and non-food products

A ‘typical target’ weight per pack might be 100 grams of a product. The product is fed[6] to the top of the multihead weigher where it is dispersed to the pool hoppers. Each pool hopper drops the product into a weigh hopper beneath it as soon as the weigh hopper becomes empty.

The weigher’s computer determines the weight of product in each individual weigh hopper and identifies which combination contains the weight closest to the target weight of 100g. 

The multihead weigher opens all the hoppers of this combination and the product falls, via a discharge chute, into a bagmaker or, alternatively, into a distribution system which places the product, for example, into trays.

Dispersion is normally by gravity, vibration or centrifugal force, while feeding can be driven by vibration, gravity, belts, or screw systems.

An extra layer of hoppers  can be added to store product which has been weighed in the weigh hoppers but not used in a weighment, thus increasing the number of suitable combinations available to the computer and so increasing speed and accuracy.

Filling bags

The range of bags which can be filled using multihead weighers is immense. At one end of the scale are large catering packs of many kilogrammes. At the other are small bags of crisps which can be handled at high speed and efficiency.

Mix-weighing

Products containing up to eight components can be mixed on a multihead weigher, very accurately at high speeds.

The weigher is divided into sections, each with its own infeed. For example, a breakfast cereal containing hazelnuts and dried fruit plus two relatively cheap ingredients, could be weighed on a multihead with say eight heads devoted to each of the more expensive components and four heads to each of the other two. This would ensure high weighing speed while ensuring that overfilling of the expensive ingredients was negligible.

Filling trays

A well-engineered distribution system enables you to combine the speed and accuracy of multihead weighing with precise, splash-free delivery of product into trays.

Applications

Multihead weighers were used initially for weighing certain vegetables. Their use expanded exponentially in the 1970s and 1980s when they were applied to the rapid weighing of snacks and confectionery into bags. What cherry tomatoes and crisps had in common was that they flowed easily through the machine and into the pack, with no more encouragement than gravity and a moderate level of vibration of the feeders. Since then, the accuracy and relative speed have been extended to many products which would in the early days of the technology have been seen as difficult to handle.

Sticky products

Fresh meat and fish, whether in a sauce or not, poultry and cheese (including grated cheese) can be moved along by using belts or screw feeders rather than vibration.

Granules and powders

While free-flowing, fine-grained powders can be weighed more cheaply by other means (such as cut-gate or linear weighers, or volumetric feeders), granules such as coffee granules and products such as loose tea can be weighed on today’s multiheads.

Fragile products

Weighers with more shallow angles of descent and various cushioned inserts have made it possible to pack delicate and brittle items such as hand-made chocolates and gourmet biscuits. These are often paired with baggers or other packaging systems designed to handle fragile products.[7]

Complex products

Using mix-weighing combined with a distribution system tailored to deliver separate components into a tray, a ready meal can be assembled with just the right quantities of, say, rice, meat and vegetables in the appropriate compartments.

For further information on our Multihead Weighers contact Total Food Machines on 02890 994 202 or email sales@totalfoodmachines.com

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