Using this fully automatic assembly machine, PA-490, pocket spring rows can be processed into spring units of different dimensions. The connection can either be realized using “centre“ gluing only or using “top/bottom“ gluing by applying a non-woven cover material.
The endless pocket spring rows are directly fed from the spring coiling machine or containers to the machine via 3 feeding units. The cutting device shortens the spring rows to the requested length. During the same work step, the resulting pocket opening is welded closed on both sides using an ultrasonic welding machine. Next, the pre-cut spring rows are exactly positioned in vertical orientation in front of the loading position in a belt-driven channel. At the same time the gluing valves approach and spray the already loaded spring rows with hot melt. Next, the ejector glues the spring rows to the previously processed spring row. The pocket spring units pushed onto the unit output table are now ready for further processing.
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