How is on the Fly Web Splicing Accomplished?

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rokefuller Participant Join Date: Sep 2006 Posts: 3	How is on the Fly Web Splicing Accomplished? 09/18/2006 1:07 PM
	I am an electrician having a customer who bought a used laminating machine which came with several chanllenges. One is that the splicing sequence has never been satisfactory either for my customer or the previous owner. This machine is old and uses a modicon 484 PLC. I am studying the prints and program to understand the OEM's intent for the splice sequencing. The winders and rewinders are 2 spindle turrets. It does not appear that the splicing operation was fully automatic. I am looking for information that will help me understand components and the control logic needed to automate this process. Any sources of information shared will be greatly appreciated. Thank You!
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Ing. Robert Forbus Power-User Join Date: Jul 2006 Location: Springfield, Tennessee U.S.A. Posts: 231 Good Answers: 16	#1 Re: How is on the Fly Web Splicing Accomplished? 09/27/2006 11:04 PM
	The function of the so-called "zero-speed splicer" was perfected by the company Butler Automatic during the late 1960's for non-stop splicing of paper rolls for a continuos web in a printing press. The basic design was done many years before PLC's became the norm, so a lot of limit switches and relay logic circuits were used. The basic idea is this-the splicer must have a festoon of sufficient capacity so that it can hold enough web material before, during, and after the splice so that the web's tension is affected as little as possible. I should add that the normal (i.e. running) position of the festoon is critical as well. Although you are splicing a different medium, the same principles should still apply. The Butler Automatic company is still in business, and someone may be able to offer a bit of guidance towards your solution. Ing. Robert Forbus __________________ "Yeah, but will it fit?"
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You might be interested in: Splice Kits, Splicing Equipment, Web Inspection Equipment

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