Different terms related to web guiding are discussed in this article.
Web Guiding
Web guiding is the process of regulating the cross machine position of the web while the web is transported over the rollers in roll-to-roll processing machinery. Other terms for web guiding include:
Are you looking for an affordable option to replace your pneumohydraulic or electromechanical web guiding systems? If you have an existing web guide with outdated sensors and control unit, then check out this affordable web guiding system upgrade option. This upgrade kit has even better technology and easy to use functions.
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hi in rolls-royce technologies we keep making advancements with our products and I want to talk to you a little bit about the our retrofit kits for web guiding systems now our retrofit kits are available for most applications that are out in the market the advantage is you just replace controller the actuator and the sensors on your web guiding system and just keep the mechanical components mechanical components can last a very long time and they're easy to maintain but the this part is what's really the the the nitty gritty of a web guiding system and what we want to allow you to do is to have the most advanced technology in your existing web guiding system so for a typical what typical retrofit kit would be composed of a a control unit with a screen a motor driver an actuator and a sensors in this case what I have and what I'm showing you here is something that we have actually modified to our old systems they make them a lot better according to what our customers have been requesting from us for example in our in our motor driver now it's a quick disconnect so as you can see we can just plug and unplug a cable here and allows you to also have the same thing on our actuator now this allows the customer to select the size or the length of the cable that they need and it's on off-the-shelf cable so you don't really have to buy from us you can go directly to the cable suppliers additionally we have also come up in our sensor mountings we have come up with brackets that slide are easy to lock on to position very sturdy so therefore you just mount a aluminum extrusion or one inch aluminum extrusion and it's very simple to use you just turned the the locking mechanism and you can slide it into position water ever you want and once you have it in position you can lock it back up and it's firmly in place now these aluminum extrusions you can buy them off the shelf and you can buy them for any length that you want so these are very very handy to have now they are also available for our other sensor sizes for the 221 millimeter sensor to now the advantage of the 221 millimeter sensor is that with the flow these forty eight millimeter sensors you would have to move them if your web with changes quite a bit but with a 221 if the web width is within the sensing window of the 221 you can just use our application where you can adjust the the guide point either automatically or by just with your finger or by setting it by moving it in increments of a certain length so that's those are some of the features so with our actuator we can provide you with options as to how to connect the actuator to your machine now we can provide you with either clevis amounts on e on either side or we can provide you with a feral rods it all depends on what you have in currently installed in the machine we're trying to get as close as possible to doing this that's a drop in there might be some slight modifications but if we can you make it as a drop in it will be a lot better for you now another thing that we have available for you a controller that has the operator interface and a screen touch screen where the operator can actually do all the controls of jogging left/right or several Center put the machine in operation determine whether what the sensors are the controller also has up to two sensors that it can work with for the guiding process another thing that we have available for you now we have a team of sales reps all over the United States so they can help you start the process of determining what do you need for your system in order to do the retrofit retrofit kit for your current web guiding system in order to do that all you have to do is just go visit us at our website at www.ge.com tacked us there we have a whole listing of all our are all sales reps all over the US in Mexico and in Europe we hope that this can be of service to you and we believe that this application of retrofit kits will be of great value for your operation you
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hello this is Pedro Velasco withdrawal to all technologies we had some customer feedback on our sensor mountings and we did some some research and then we created a new sensor mounting that you can easily put on your operation so for example for 221 sensor as you can see our we have our typical sensor mounting which is as brackets that we ship our sensors with but additionally to that we just found these off the shelf brackets that we can mount on a one inch square bar in this case it's a extrusion and it fits perfectly this so it allows you to with a quick release just to be able to move your sensor around really easy right so you can just light it through and then once you use your quick release and just tighten it back up it provides a very very sound fixture so these has pretty good for those operations what we're doing retrofit kits on new hydraulic systems and people want to have the sensors mounted on the existing bar or they can just acquire a new aluminum extrusion bar or one-inch extrusion bar and they can just mount this now this is off the shelf so it's a very easy to to access and we can provide it for you or we can tell you where you can buy these so that you can do a very sound mounting of our 2:21 sensor on your retrofit kit for replacing pneumo hydraulics so you can see more of this at our website on wwr to our Tec h so it's you
Roll-2-Roll Technologies has released a new feature for it's web position sensors. This feature benefits all converting operations. The advanced contrasting capabilities can detect the smallest changes in colors and markings. Stay tuned for more information about our advanced contrast sensor capabilities for converting operations.
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hi this is pivotal Velasco of roll-to-roll technologies today we're going to talk a little bit about our contrast sensing technology in how it works with our web guides you should typically some of our customers come to us a very very special situation they might say for example oh I want to guide this material but they really don't know how how to how can we get something that has gradients that you know that has no line in it well we have found a method of doing that we can guide based on it labels on the edges of labels we can guide based on features or contrast between colors and we'll talk a little bit about that we can even guide on labels that have irregular features as long as we can find something that we can guide through so today we're going to talk a little bit about what each one of these features how to go through our menu of applications for contrast sensing in web guiding applications so when you go to the screen you will see that there's a tool icon right there let's press on that tool icon that tool icon was tickets to another screen where you can see that we're on the sense sensing mode right let's hit the tool icon on top again and then we get the different this is the the screen where you will get all the different options for doing the contrast sensing in this case when it's red it means that it's already set on a specific application so now what we're gonna do is let's see all the different applications you can do by hitting on that icon there it will turn green and it'll show all the different applications now right now it's showing what we consider to be the most robust application that is it's actually seeing the border of both borders of a specific contrast in this case it can be a single color but it's actually working on two principles one it's the color and the second is the width that of that line or that color so as long as it sees that it will continue to guide or follow that based on that that is the most robust application we have for contrast sensing however the next most robust applications are actually the two on the end in this case when we hit it there it just means that it's going to look in a contrast on on a color that it's represented right now but this orange bar but it's looking and where that contrast begins from this side right and on the other side does the opposite right so in a second we'll see all these applications in working right and the least robust but it's still very useful is this one where it actually looks at to contrast and and then it looks at where those two countries are actually occurred okay so once we select that we can actually go with these two icons on top we can actually select which one of those in a specific contrast setting we can which one we will select and we'll show that in a little while when we do our applications so if I want to just set I just hit this icon again and now it's on the on this application which is looking at the other line that is caused by two different contrasts in there right and then I just hit back on the home button and takes me back to the original screen so I'm not going to show you different applications with some materials that I have here so for example we can have an application where we have labels printed on a material but you can see the labels only have this permanent edge and on this side it has an irregular feature so one application that we can do is we can actually tell the the system to look for this edge right here now this is one of the most interesting features of our sensors even though these are different colors and ingredients we can still guide on this line right here and even though there's a break in between there's a special condition in our in our in our system where what it will do is if it's in a guiding mode as soon as it sees this this break it will actually lock the position of the web guide at that and then once it sees it the the contrast again then it will go back to guiding mode so of course if this is moving really fast it actually you can't really see when the web guide stops when the locks in place because it just keeps on okay that's one application another application we'll talk about it's this one see in this case we have something similar but but we can actually we have several options to guide from we can actually guide with this in the middle and we can use the most robust application which is actually saying this is a bar right down the middle even though you see that there's a gradient there because of a way our sensors and controls are made that technology that we have it actually looks at this as if this was a line of a constant width so we'll see that application there and of course when we're talking about the lines just the least robust but it has a very good application in the case like this where you have orange and black so we might want to guide on this transition between orange and black okay and we will look at that in a second as we do each one of these applications so let's work with this application in particular so in this case we have an irregular feature on one side but we do have a feature that is constant it's just that there's there's a constant line that we can we can call it a line and the width between here is also constant but we can guide on this feature right here right now which is the edge of all these labels right remember what I mentioned before if there's a break the web guide would lock in position until it sees that material gate and it doesn't care really if the cont if the color changes all it's looking for is this edge right here so if I position the material right here on our on our sensor one thing that we'll do is first let's go back in the in the in the system and let's go into the tool mode and go all the way back I have already pre-selected but let's say that we were here we can actually do and select this one right here which is the one that we like it's looking from this side to this to the edge right and then I can tell it here by moving right now it's actually looking at the black surface up to the edge where it starts with white but I don't want a guy there I want a guide on the white on this edge right here so I can move it the position right there and I can tell it lock it there and now it is locked and then I go back in my home program and as you can see you see this is the black material on the back this is the black material on the back this one here is this white up to the edge of the label and this is the label but as I move it let's put it right here and say it's in the center and as I move it you'll see that once it loses the contrast it will lock in position you see it keeps it all the way through I mean and that's what I'm looking for and you'll see a green line which actually tells you in this case it's actually looking at the place where this white between the labels and it has locked in position there so no matter what I do as long as I keep it there you see that the green the green line stays but as soon as I move it it picks it back up again now let's look at this application in this case we see that the best way of guiding with this material would be looking at what is constant the only constant we have here that we're sure of is that the width between this this a feature here or this label and in the other label so it creates kind of like we're gonna call it like a white line even though it's has gradients right however the width is constant throughout so we're gonna work on that one place the material right here and then we're gonna go into our menu and then we're gonna select the appropriate feature that we want so we're gonna do the one in the middle remember I told you one before that it is the most robust feature there is however I do have to pick which one I'm looking at I know it's this one and right in the middle which is the white space between the two labels so I can select it right there and then I say let's pick that and it is set when I go back to my main menu as you can see the green says that is right in the middle and as I move it around you see how it follows the material based on that but notice that when it loses it it locks in position until it finds it again that is one of the main features of our system now in this case we want to do something very interesting we might have a feature which is kind of hard to detect in this case we have orange and black we want a guy by the line that is created between that transition from orange and black so what we do is we go back in our menu right and then we pick which one we want and we're going to pick this one right here now here's something very interesting once we I have picked it I can also say I can have to I have to select it right through here so what I know is right now the transition this bar right here is the orange this is the black this is the white and I can move it around I can say pick on this one or pick on that one ring but I want to do this one which is a transition as you'll see you'll see a green light or a green line that goes around the two features right and it's going to be right in the middle there where the transition occurs because I picked that one which is right in the middle here I can go back in my menu and you can see right there where the Green Line is right where the black and orange meet right now what is a special that this feature is that it will only look at where orange and black comes in that arrangement Orange on this side black on that side you know we'll just follow that feature through me and if it loses it like before it just locks in the last position but then when it's picked it back up he keeps alone now I have another orange in black but if I put that one there see it's not gonna pick it up it's not on the right orientation right so that is one of the features another feature that we have with this so we hope that this information is of value to you we know it should be we're really interested in knowing any other applications you might think of however think of this we have a web guiding technology that uses contrast sensing that can handle very difficult applications where where the contrast has really has some some very specific features such as gradients maybe irregular features as long as we can find something where we can guy from we can provide you a good guiding system based on contrast you can see more of this in other features that we have in our in our products by visiting our website which is WWF tag team thank you you