Knot machine hand made 2

This is a handmade knot machine with 3 timers, 19 relays and 4 motors.

[@kankan3555]

Wonderful project! it gives me a lot of idea. Helps a lot!

[@TheAstraCinema]

Pleasedd you found it interesting

[@avcomth]

I run a post printing shop, am also a part time inventor. I am designing and building a "paper tag folding and knot tying machine". The commercial ones from China can do the tying but not the folding part and already costs more than $20,000. I can foresee how complitcate the mechanism will get since the machine has to loop the elastic rope through the hole on the paper tag and cut that to length before typing the 2 ends together. For the typing mechanism, I was looking at my sewing machine's bobbin part and was deriving some inspiration from there. I am using the modern design technique, drawing the whole machine in Solidworks and ordering standard parts from online suppliers. I also make up non-existing parts by ordering them 3D printed. Thanks for sharing this mechanical idea for that one part of my project :D

[@TheAstraCinema]

Hello D, Your project sounds interesting. I am retired now and the machine you see here is just a one off retirement project using bits to hand. However, a few years ago I did design (also using SolidWorks (I can't afford it now!!)) and oversee the build of a machine to insert a length of string trapped by an eyelet and discs into a legal type card envelope. No tying involved but the string and eyelet did have to be precisely located through a 5mm hole and the eyelet crimped. This sounds similar to your idea of the elastic through the tag. Let me know how you get on. James

[@avcomth]

@@TheAstraCinema Hello again sir, Thanks for replying to me! :D I looked through your channel and got stuck by where you're coming from. Your machine design have got this old school, highly-mechanical, made-from-scratch kind of approach, whereas all the people I seek advise (close to my age, mostly 20+ years old) are all computer based, mostly influenced by Japanese textbooks, using robotic/CAD-ready online parts. While this have it's advantages, it also have the disadvantage of making the design bulky and more expensive at times. For example, using slow and resource consuming pneumatic actuators in place of a simple wheel-driven shaft (which one would have to design and mill from raw materials, but which would function more efficiently and economically) Would you be kind enough to let me seek advice from you on my pending projects? I am based in Thailand but was educated in America. Perhaps email or chat application? I think that having something to ponder on in your retirement helps to refresh the mind and I could very much use your insightful advice. Thank you again sir. Anand V.

[@TheAstraCinema]

Hello again Anand V. I don't know where the D came from; I thought you signed off D on your first message. Yes, I know exactly what you mean by the two design approached. The last company I worked for seemed stuck on using pneumatic cylinders. I pointed out that they were good for some applications but were slow and springy. Also no good if one wanted a fast synchronised system. Mind you, my knot tying machine is far slower than it needs to be and relies on one motor finishing its sequence before the next one starts up - not ideal. But don't take too much interest in the knot machine. As I said, it was just a retirement project using mainly what bits I had available. I think how one designs a machine is very much 'horses for courses'. Compare the sewing machine you mentioned (very fast and synchonised - all mechanical) to a large factory installation. The factory system, filling cans of baked beans for example, would be a totally different concept. Parts must be readily replaceable and the system adaptable using computer control. Cost not the first consideration. A middle of the road example could be a clothes washing machine - programmable by the user to the limits set by the designer but not necessarily fast. Another very important factor of coarse is volume; is the machine a one (or few) off or high volume. I think your tag folding machine sounds like it comes under the sewing machine concept. Use electronics if needed but not for the sake of it. I am not against electronic control in the slightest; I have done a little 'C' programming and have recently made (using a PIC development board) an engine rev counter. I don't want to put my email address on this public platform but if you wish to tell me yours, I will reply by email. Regards James

[@avcomth]

@@TheAstraCinema Hi. my email address is [e-mail]. Looking forward to writing to you 😁😁

[@sacredsounds4234]

Can you build a knot tying machine for an invention I have?Labor,parts,and royalties paid.Thanks Paul

[@timohuber536]

Hi James, what a wonderful project! I am currently developing a fully automatic balloon tying machine for my bachelors thesis and I see you and I had a lot of similar thought processes while coming up with the mechanism. So cool! Would you be interested in getting in touch and having a chat about tying mechanisms? Looking forward :) Best regards from Berlin, Timo

[@harimanvi5161]

Can we get a tutorial how built one……it vl would really helpful

[@tamnguyennhat1903]

Very attractive project,...but better to make all automatically. Anyway, thanks for your hard work. you gave me ideas for my next similar project.

[@TheAstraCinema]

Thanks. Let me know how you get on. My machine just ties the simplest of knots. Try more complicated ones!

[@sacredsounds4234]

Are you capable building something like this.I have an invention,that needs knot tying capabilities.Labor.parts,and royalties?Thanks Paul

[@yoyofargo]

Another way to do this is to have a 2 part mold block. A vinyl hose or flexible tightly coiled spring gets inserted into the block when the two halves are connected. *The path of the insertion inside the block is a knot.* Inside the hose is a flexible rod and hook. The hook pulls the thread into the hose as the rod is retracted. The hose is then retracted but the thread stays in the block. The two halves of the block are separated, and there is a ribbon gap escape along the inside edges of the knot path, that leads to the mating surfaces of the two block pieces, and it's conically angled to allow the thread to escape easily after the knot is tied. I know that sounds convoluted to explain but it's a really simple obvious device.

[@yoyofargo]

It only works because the thread escapement is smaller than the vinyl hose diameter. It is possible to do with a single block, but the 2 part makes it easier to visualize.

[@anli7816]

Anyone knows if a similar machine is in production? Would love to get one

[@EddyFredj]

Dear James , If i want to buy this machine, what is your price and deadline, thanks for your reply

[@tdharma8513]

Super invention

[@asadattar4557]

Good one guys... I need this machine could you send me the quotation please....

[@akudia6953]

It's use a adruino uno programming @ PLC programming to run?

[@TheAstraCinema]

No, in this case it uses all relay logic.

[@sto2779]

how did you make it? Edit: I just designed a knotting machine tool, fully automatic, used to knot garbage bags. it is much less complex and provides a better knot. It uses the principles of the "nail knot" used in fishing.

[@TheAstraCinema]

Please show it on your channel

[@sto2779]

@@TheAstraCinema I will. Thanks

[@DEADB33F]

Neat. I wonder how hard it'd be to have an additional step which cuts a length of string off a roll then ties the two ends together.

[@TheAstraCinema]

Hello James, I must just make the point that the ends of the lengths of string or wool have to be reasonably the right distance from the hole in the plate before the hook pulls them through for tying. Also the strings must be clamped in some way to prevent them being pulled in - particularly during the final tensioning stage. I have used a simple device with rubber washers as you can see, but an automatic clamp would be better. Good luck James (also!)

[@worldofgame7002]

Hi ya ... I'm looking some kind of machine like this but a bit different.... Can you do for us... Can we have a business deal?

[@changomanzov2642]

Nice, it looks powerfull

[@TheAstraCinema]

It is!

[@gabrielepapini4034]

dear James, is possible that you use your hobby, to make a machine for me? :)

[@matthewmurphy3615]

Hi is there a contact for you as we are looking for a machine to tye knots Regards Matt

[@jirawanpolprasert4707]

What equipment for this machine ?

[@kienblbui3596]

so good

[@TheAstraCinema]

Thank you. It was quite a project!

[@muhammedcaliskan6963]

hello, do you make machine production? how can we contact?

[@kumarkadam4323]

Yucan full reviews aplid in this machine please and show haw to make it pliz

[@nyneshpanchal7711]

MANUFACTURING COST ?

[@asadattar4557]

Full description of this machine plz...

[@TheAstraCinema]

Hello, Hello Asad, I am sorry for the delay in contacting you about the knotting machine but I'm afraid I don't often look at my youtube channel unless I have a video to upload. This machine was made as a hobby project and as an idea for joining the wool for the french knitting machine (also featured). It uses 12V motor/gearboxes from Ebay, Meccano gears and other bits from the workshop. If made on a more professional scale, I would use solid state control, not relays. I do not have full drawings but if anyone was interested, I would sell the whole thing as it is for £1500. Best wishes and thank you for your interest. James

[@gardo1094]

@@TheAstraCinema hi james...i am interested in your machine to knot or splice rubber thread...we are the worlds producer of rubber thread...and i'd like to buy 3 or 4 machines of this kind...how can i get hold of you? [e-mail]

[@npnx4168]

Hello is this machine available? We would like to buy this machine. We are from South east Asia

[@TheAstraCinema]

Not available

[@kaustubhraj6851]

I need this hand made machine

[@TheAstraCinema]

OK You may buy it for £300. Send a comment if you would like it ,

[@lucalodi3]

Hello, I am interested to purchase the machine, could I have more info?

[@TheAstraCinema]

Sorry, the machine is not for sale. It was a one off project.

[@sacredsounds4234]

@@TheAstraCinema -Hello.I have an invention that needs a machine like this.Would you be interested in making money,building a machine for commercial use,and getting royalties plus labor and materials?Thanks Paul

[@amirgross608]

Hi, we are looking for a machine that does this. How can I get in touch?