335 lines
19 KiB
JSON
335 lines
19 KiB
JSON
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"_contentModifiedTimestamp": "2023-06-14T11:02:20.345Z",
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"difficulty_level": "Medium",
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"id": "epowVLmB7B7XqKEjzpGp",
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"files": [],
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"description": "Making a shut off for the beam mould to prevent plastic flowing out after disconnecting from the extrusion machine. ",
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"timeCreated": "2023-03-16T13:21:40.252Z",
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},
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"steps": [
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{
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"images": [
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"updated": "2023-03-16T13:21:42.148Z",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fhowtos%2Fs1RFHcjPHBtZT6VdaeAA%2Fshut%20off%20plate%200-186ea7103d7.jpeg?alt=media&token=460dd34b-2d10-4921-a951-6b7ff2c210b3",
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"_animationKey": "unique1",
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"text": "When working with the extrusion machine and fine tuning the process we wanted to address the outflow of plastic when the mould has filled and you unscrew it from the nozzle of the extrusion machine. We have a cooling gutter close by so the mould goes within a second or 2 in the water. Still the overpressure in the mould makes the molten plastic flow out quickly. \nIts extra waste and it takes time and effort to remove it. We came up with this:",
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"title": "The problem of plastic flowing out of the mould"
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},
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{
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"_animationKey": "unique2",
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"title": "Make a third plate",
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"text": "To be able to close of the beam mould from the extrusion machine while still connected to it, make use of an extra steel plate. This plate has the same dimensions and hole pattern as the 2 other plates.\nDepending of your hole pattern, think of the best way to create a strip that, if cut out, can slide over the injection hole. We made an arrow shape to create a fixed stopping point.\n\n\n",
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"text": "After you cut out the slide strip you can attach the 2 symmetrical parts to your nozzle plate and tag weld them to it (see pic 1). Give the arrow slide a center hole thats inline with the nozzle plate hole. This is your reference point. For us it worked best to go 4cm each way of the center point to create two holes. One 4mm close to the arrow head and the other 20mm on the other side. When the arrow slide is in its open position the 20mm and the nozzle hole are inline (See pic 3). In this position you can drill the 4mm hole all the way trough the nozzle plate. Use any kind of pin to secure the arrow slide in place so the big holes are aligned. ",
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"title": "Make a smart hole pattern",
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{
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"title": "Ready to rumble!",
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"images": [
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"updated": "2023-03-16T13:21:49.206Z",
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"updated": "2023-03-16T13:21:49.218Z",
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"name": "shut off plate 7-186ea87d048.jpeg",
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"timeCreated": "2023-03-16T13:21:49.218Z",
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"text": "Now its time to put everything together. One extra 4mm hole needs to be drilled trough your beam mould plate. This way the security pin goes trough all 3 plates when in the open position. Time to start extruding! We have the end of the mould welded shut with only a 5mm pressure releave hole. This is also the indicator when the mould has filled. We let the extruder run a little bit after that to put some pressure on the beam. After stopping the extrusion machine, pull the pin and tap the arrow slide shut with a hammer. Now you can unscrew the mould relaxed and gently let in cool in whatever way work best for you. \nAfter cooling down, remove the nozzle plate. The beam should slide out or its needs a few taps at the back!\nMinimal waste and ready fast for the next beam."
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"_modified": "2023-09-10T10:43:47.121Z",
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"description": "r•Plastic stand for \"recycled plastic\". When plastic gets recycled, for example PolyPropylene, the abbreviation changed from PP to rPP. Also when pronouncing r•Plastic it sounds like \"our plastic\". And thats what we should become aware of: we are responsible, it is all our plastic! We buy it, we use it, we bin it. This realisation gives us great power: we can influence and make change!\n\nr•Plastic stands for playful. The main thing is to have fun and approach live in a playful way. We take it way to serious most of the time! I believe our kids are our greatest teachers and they are most in flow when they have fun!\n\nr•Plastic stands for minimalistic. Don't confuse minimalistic for boring, on the contrary! Minimalistic for us means to be conscious of what we buy and consume. Are the products we buy useful or is it just more stuff? When we create product out of recycled plastic it will be a useful product, it will replace virgin plastic or natural resource, it can be used for many years, it will be recyclable and it will add to a circulair economy. It will be local recycled plastic, the products will be locally produced and offered on the local market.\n\nr•Plastic stands for Tri Hita Karana. This is a Balinees philosophy of life. It boils down to 3 relationships: person to God, person to person and person with nature. All these relationships have to be maintained to achieve harmony and prosperity. This is reflected by r•Plastic in different ways if you pay close attention.",
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"content": "Making a shut off for the beam mould to prevent plastic flowing out after disconnecting from the extrusion machine. \n\n\nUser Location: Tampaksiring, Indonesia\n\nWhen working with the extrusion machine and fine tuning the process we wanted to address the outflow of plastic when the mould has filled and you unscrew it from the nozzle of the extrusion machine. We have a cooling gutter close by so the mould goes within a second or 2 in the water. Still the overpressure in the mould makes the molten plastic flow out quickly. \nIts extra waste and it takes time and effort to remove it. We came up with this:\n\nTo be able to close of the beam mould from the extrusion machine while still connected to it, make use of an extra steel plate. This plate has the same dimensions and hole pattern as the 2 other plates.\nDepending of your hole pattern, think of the best way to create a strip that, if cut out, can slide over the injection hole. We made an arrow shape to create a fixed stopping point.\n\n\n\n\nAfter you cut out the slide strip you can attach the 2 symmetrical parts to your nozzle plate and tag weld them to it (see pic 1). Give the arrow slide a center hole thats inline with the nozzle plate hole. This is your reference point. For us it worked best to go 4cm each way of the center point to create two holes. One 4mm close to the arrow head and the other 20mm on the other side. When the arrow slide is in its open position the 20mm and the nozzle hole are inline (See pic 3). In this position you can drill the 4mm hole all the way trough the nozzle plate. Use any kind of pin to secure the arrow slide in place so the big holes are aligned. \n\nNow its time to put everything together. One extra 4mm hole needs to be drilled trough your beam mould plate. This way the security pin goes trough all 3 plates when in the open position. Time to start extruding! We have the end of the mould welded shut with only a 5mm pressure releave hole. This is also the indicator when the mould has filled. We let the extruder run a little bit after that to put some pressure on the beam. After stopping the extrusion machine, pull the pin and tap the arrow slide shut with a hammer. Now you can unscrew the mould relaxed and gently let in cool in whatever way work best for you. \nAfter cooling down, remove the nozzle plate. The beam should slide out or its needs a few taps at the back!\nMinimal waste and ready fast for the next beam."
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