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Fixed weight weighing solution for leek packaging operation

01 May 2017

For a dedicated leek packing operation, where automation is necessary to minimise labour and speed up the operation, the Aja HWS Super Selector semi-automatic multihead weigher has been employed to take the guesswork and manual juggling of pieces to achieve best weight and minimum give away for each pack. 

Based on a standard multihead weigher concept the HWS has 14 bomb door weigh hoppers laid out in table top, linear format. One operator feeds the hoppers constantly as the weigher finds the best combination of product pieces to reach the target weight and drops the leeks onto a collating belt which runs the length of the weigher and feeds out into the flowwrapper infeed. All the leeks drop onto the same place on the collating belt with rejects being sent the other way, an alignment device further ensures that the leeks are aligned prior to entering the flow wrapper.

The extra deep hoppers of the weigher allow it to handle leeks up to 40cm in length with pack speeds of up to 30ppm. Fixed number packs are maintained and give away is kept to the absolute minimum despite extreme crop size variation. Tandem systems could also be configured, if required, to double speed and productivity.

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