DigitSmith

bobbin thread jumping out of case

Reply
 
Thread Tools Search this Thread
Old September 21st, 2009, 03:01 PM   #1 (permalink)
Orly Orly is offline
Junior Member
Join Date:
Sep 2009
Location:
Los Angeles
Posts:
3
Liked:
0 times
Default bobbin thread jumping out of case

I have a single head SWF D-1201 wide frame. This has a frame size of about 39x39 so we often run jobs that go for 10+ hours...

Lately we've been having a baffling problem with the bobbin thread jumping out from under the tension spring on the bobbin case at completely random times. Sometimes it is right after a needle change, sometimes it is in mid-stitch. The bobbin thread comes right out of the groove and around to the top opening in the case. The result is that the machine continues to run with no tension on the bobbin and it gets pulled on top of the fabric. At first this was a freak occurrence but it has been happening more and more frequently, almost daily. Now I'm afraid to take my eyes off of the machine for fear of finding it has been stitching all bobbin for the last hour.

I've talked to several techs and they say it is either the bobbin is threaded wrong or the case is bad. They've never heard of this before and they think I'm nuts. I am positive I am threading the bobbin correctly, and I check the tension with a drop test at every bobbin change. I use pre-wound Coats and Madeira bobbins. I have tried two new bobbin cases, and it is still happening.

Could some other part be worn or damaged? Is it a timing/service issue?
Send a private message to Orly ContactReply & Quote
Old September 22nd, 2009, 05:59 PM   #2 (permalink)
Robert Young Robert Young is offline
Senior Member

Robert Young's Avatar
Join Date:
Oct 2007
Location:
Harlingen, TX
Posts:
1,354
Liked:
171 times
Default Re: bobbin thread jumping out of case

Hi,

I have the same machine, but have never run into this issue before. I was just curious as to what you use yours for? (I know, not much help to your question, but so few out there have these machines compared to standard emb machines I just HAD to know, lol)

We use ours for embroidered art ( volantfineart.com ) as well as to produce custom fabrics for interior and fashion designers.
__________________
Modern Embroidery Designer
www.volant-tech.com
www.volantfineart.com
Send a private message to Robert Young ContactReply & Quote
Old September 22nd, 2009, 06:44 PM   #3 (permalink)
Orly Orly is offline
Junior Member
Join Date:
Sep 2009
Location:
Los Angeles
Posts:
3
Liked:
0 times
Default Re: bobbin thread jumping out of case

Aha! Yes, I've seen your site before. Nice to meet you. Great stuff, you guys do amazing work. We've actually considered contacting you about collaborating... We do fabrics for interior design - mainly produced on Schiffli equipment in Europe - but we use the SWF for developing patterns, sampling, and custom work. www.jenniferrobbinstextiles.com

For anyone still following the thread, I think I've solved the issue. That pigtail is actually on the bobbin case for a reason. Duh. It doesn't explain why my not threading through the pigtail wasn't a problem until the last month or so, but I'll be content if it just doesn't happen again.
Send a private message to Orly ContactReply & Quote
Old September 23rd, 2009, 06:03 PM   #4 (permalink)
Robert Young Robert Young is offline
Senior Member

Robert Young's Avatar
Join Date:
Oct 2007
Location:
Harlingen, TX
Posts:
1,354
Liked:
171 times
Default Re: bobbin thread jumping out of case

How COOL is that! I love your site! Quite a "sample machine" you have, lol. This is my 20th year of digitizing and this is much more fun than corporate logo work was.

Funny how something so basic on the bobbin case can make such a difference. Hopefully the issue never happens again.
__________________
Modern Embroidery Designer
www.volant-tech.com
www.volantfineart.com
Send a private message to Robert Young ContactReply & Quote
Old September 30th, 2009, 04:29 AM   #5 (permalink)
ingeneren ingeneren is offline
Junior Member
Join Date:
Jul 2009
Location:
Midwest
Posts:
5
Liked:
0 times
Default Re: bobbin thread jumping out of case

It is the bobbin not the machine. I no longer use the Coates and clark prewound bobbins for that same reason. I rarely use the paper back bobbins any more or the backless bobbins because they all tend to jump and I don' t need the down time. I switched to mostly NEBS plastic case prewound bobbins and have not had that problem since. If I have to use a paper back bobbin I will use Allstitch not Maderia or Coats.

The bobbin is too light and the thread tension is uneven which makes it skip. (I used to be a mechanical engineer before going into embroidery)
Send a private message to ingeneren ContactReply & Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
pr600 question suelorio Embroidery and Digitizing 8 December 26th, 2011 06:21 PM
bobbin thread two-blessed Embroidery and Digitizing 0 September 1st, 2009 10:29 PM
Thread & Bobbin Tension rosenc1c Embroidery and Digitizing 1 December 9th, 2008 04:46 PM
Bobbin Thread jlang46 Embroidery and Digitizing 2 November 17th, 2007 04:07 PM
Tension problems patricia Embroidery and Digitizing 2 November 30th, 2006 01:23 PM

All times are GMT -4. The time now is 11:59 PM.
Copyright © 2011 DigitSmith. All rights reserved.
Forums software by VBulletin, Copyright © 2000-2019, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.