Category Archives: Plastic Injection Tooling

A few Techniques for Plastic Molding

Plastic is one of the fundamental materials for certain producers. The results of plastic assembling have been broadly utilized for a large portion of the clients. The plastic items which are ordinarily utilized incorporate the vehicle guards, PDA, hatcheries for the infant, and some different products for either the family or the business. Every one of those items may require various techniques.

Plastic is broadly utilized by some unique makers since it tends to be formed effectively. There are some basic strategies for plastic molding. Here are three strategies for plastic molding which are generally utilized.

Injection Blow Molding

This injection blow molding strategy for plastic molding begins by dissolving the fluid plastic in the council of the machine and afterward sending the melted plastic to a form for making the ideal shape. Injection Blow molding practices on making the blessed item, for example, bottles, bike fuel tanks, hoses, guards, and some other empty items. Likewise, the last item is consistent. The fundamental procedure of this strategy is that the air is blown and bolted with the goal that it makes empty. At the point when the condensed plastic is poured on the form, the plastic will solidify with the goal that you can make the shape you need. At that point, you can haul out the form through a shaped cavity.

plastic molding
plastic molding

Infusion Molding

This sort of technique utilizes thermoplastics. Among different techniques, this is utilized all the more frequently by the maker. The techniques incorporate the shooting hot fluid thermoplastic at the rapid to a fired shape. At that point, the form is attached firmly while the plastic will pursue the state of the shape. The plastic will be chilled off by the little vents on each side. At the point when it is cool, it will be evacuated and afterward painted. Be that as it may, this technique leaves little crease with the goal that the last item will be done for better outcomes. The items which are made through this technique incorporate the toys, MP3 player cases, vehicle dashboard packaging, and some others.

Thermoforming

This strategy is centering for making bigger things which are for the most part utilized for the utilization of modern and home outfitting. This strategy is very basic. You just need to warm the plastic until it is flexible with the goal that it very well may be controlled to making the ideal shape. At that point, the little machine will add any detail to the things, for example, body cleaning, brightening, and following stepping. The normal results of this strategy incorporate flying machine windscreens, truck beds, mechanical beds, and some other bigger things.

Plastic injection Molding for Toys

Numerous plastic molding toys are made through injection molding, toys made in plastic have points of interest of good quality, and lightweight, brilliant enhancement, and complex structure are conceivable, monetary. China is the greatest plastic toy showcase, just as the greatest maker, numerous world-renowned plastic toys maker built up their exploration focus and assembling offices in China, for example, Hasbro, Lego, and Mattel.

Infusion Shape for Plastic Toys

Plastic toy shape created in China observe the nearby models, the infusion form is required to make as modest as conceivable as long as it delivers the requested amount of plastic parts. Typically plastic toys don’t require high accuracy, so does the form, the family made the shape is prescribed.

injection Molding for Plastic Toys

High volume injection molding generation requires Class 101 injection molds, hot spout, and programmed creation configuration are prescribed to limit the molding cost when you choose to include reuse plastic material, be cautious about the thickness and quality it may influence. Toy parts consistently have a bright appearance, the shading powder blend proportion and infusion molding parameter must be fixed, something else, the shade of each cluster parts would have un-acknowledged deviation.

Infusion shaped plastic toys parts ordinarily require auxiliary procedure, such as painting, covering, printing, on the off chance that you are searching for an injection mold production line to do your toy parts, do work with a molding manufacturing plant who has ability to give one-stop administrations, similar to Expert Form, so you could limit the piece rate and dangers.

The most effective method to keep up the Injection Molds

Some stages about the Injection forming upkeep

1. Recording

The working condition of the shape is typically recorded in detail.

Insights on the utilization and care of the shape (oil, cleaning, rust counteractive action) and harm

In view of this, you can discover which parts and segments are harmed and the level of wear.

To give data on the disclosure and critical thinking,

Just as the trim procedure parameters of the form

Furthermore, the materials utilized in the item

So as to abbreviate the creation time of the form,

Improve creation effectiveness and guarantee the positive existence of the form.

2. Testing

The organization should test the different properties of the Injection form under the typical activity of the infusion shaping machine and the form,

What’s more, measure the size of the last formed part.

This data can be utilized to decide the present condition of the shape

What’s more, recognize the harm to the depression, center, cooling framework, and separating surface.

As per the data gave by the plastic parts

The harm condition of the plastic infusion form and the measures for upkeep can be judged.

3. Clean up

Focus superficially support of the form

Which legitimately influences the surface nature of the item, the attention is on anticipating erosion.

Accordingly, it is particularly essential to pick an appropriate, top-notch, proficient enemy of rust oil.

After the form has finished the generation task the remaining infusion embellishment ought to be painstakingly evacuated by various infusion shaping strategies.

Use copper poles, copper wire, and expert shape cleaning specialist to expel leftover infusion forming and different stores in the form, at that point air dry.

Cripple the cleaning of hard items, for example, wire and steel bars to abstain from starting to expose what’s underneath.

In the event that there is rust brought about by destructive infusion shaping, utilize a processor to pound and clean, and shower proficient enemy of rust oil.

At that point store the plastic infusion shape in a dry, cool, without dust place.

Prototyping Manufacturing

Our objective with the V-Flash™ desktop modeler is to enable designers, engineers, hobbyists and students to imagine, design and produce, whenever they want, whatever they want – directly at their desk.

History of excellence

Founded in 1986, we are a leading provider of rapid 3-D Printing, Prototyping and Manufacturing solutions.

Our systems and materials reduce the time and cost of designing products and facilitate direct and indirect manufacturing by creating actual parts directly from digital input.

These solutions are used for design communication and prototyping as well as for production of functional end-use parts.

In addition to the V-Flash™ desktop modeler, we offer SLA™ systems (stereolithography), SLS™ systems (selective laser sintering), InVision™ and ProJet 3-D Modeling solutions as well as diverse materials, software and application solutions

3D printed Stainless Steel Parts

In August, when I ordered a bunch of parts for the beard trimmer I’m working on, I also ordered a small stainless steel ring that I designed in a couple of hours. The ring was for me to check out in person the quality of Shapeways.com’s 3D printing in stainless steel. It is also intended to replace the stainless wedding band that I have been wearing. It arrived today (finally!).

I like it overall. The design was to look a little Art Deco and does so, though more in person than in the photo, I think. More importantly, my wife approves. It’s always odd to see something from my brain (or my screen) manifested in the real world.

The resolution of the printing is so-so. I am happy with it, but I am VERY glad that I did this test before I promise anyone anything printed in 3D (which, I will do, by the way, just contact me). Just know that you’re supposed to be looking at smooth surfaces when you are looking at the pictures.

The metal itself feels VERY solid and strong. I am pleased with that. I will likely do some tests on it to see how well the surface can be smoothed by secondary process (i.e. a grinder), but that will be for one offs it is works, NOT for productions runs of any sort.

Anyhow, feel free to let me know what you think.

NOTE: everyone who has seen the ring in person says that this photo does NOT do it justice.  Apparently the level of detail apparent in the photo is lower than the real deal and the texture from the process is way worse in the photo than in real life.

EDIT: 1/21/10 I have no idea why I didn’t do this sooner. If you want a copy of the ring, or a bunch of other cool 3D printed stuff available, check out Shapeways.

3D printed Stainless Steel

Alas the ring is not quite perfect. Despite the major composition being stainless steel, there is a little bronze in the ring. This has led to slight discoloration on my finger. I believe it comes about when I wash my hands and don’t remove the ring and thoroughly dry it and my finger. This is unfortunate, since I think that this is likely not normal behavior for most people. If I’m wrong, please let me know.

The implications that this has is that this process is not ready for prime time jewelry production. I personally will continue to wear the ring since I have no issues with the slight color, but customers as a whole are not so picky. I had been thinking about approaching a couple of retail outlets locally to sell small quantities, but this won’t fly. 

The other thought is perhaps it has something to do with my own body chemistry? My previous ring was stainless, but perhaps my vegan diet makes me more basic or acidic than a “normal” person and perhaps most people won’t have this happen. I will have to find more people who have experience with the 3D printed metal before I know, I guess.

3D Scanning

Ugh, what a difficult day. I spent a good part of it creating a set up for 3D scanning and feel like I got no where. But, lessons were learned.

I was working on getting the free software from DAVID to work to do basic scans. If it worked out, I was ready to start saving the $ (well, technically euros) to get the professional version of their software.  Just think, less than $600 to have something that puportedly works as well as the $3000 scanners out there. I am not saying that I won’t start saving, but I am not as inspired as I was hoping to be.

I believe my problem all came down to hardware limitations. I do NOT blame the software. First off, my laser was questionable from the get go. You need a “line laser.” I was using the Straight-line laser level that I stole (er, borrowed) from my neighbors this morning when dog-sitting. I don’ t think it is bright enough.

The second hardware issue was that I was using the webcam in my Macbook Pro. Now the camera itself is fine from a spec standpoint, but it is pointed at the user, which means that I had to set up the stage on top of my keyboard. It didn’t necessarily keep anything from working, but is sure did make it so that I ran out of patience sooner than I probably would have.

The software itself is Windows only, so I was running the Mac in Bootcamp with XP. The software ran just fine and it was relatively easy to figure out, though, admittedly, I did have to READ THE MANUAL. Terrible, I know.

So I am about to put an request for a free webcam out on Freecycle. I figure that is one of those items that people don’t use but feel like they shouldn’t throw away.

If I can come up with that, I have seen a pretty good line laser made out of a regular laser and a glass or acrylic cylinder.  I will work on constructing one. Of course, I will post results.

If I can get a rudimentary setup working, I will take a more serious look at the starter kit that they sell at the DAVID site. From the 3rd party reviews that I have read, it sounds like it is pretty good software.

3D printed iPhone cases

As I recently learned from Freedom of Creation, FreshFiber has launched a line of 3D printed iPhone cases. This touches on something that I have been working on, an iPhone “case” project that hopefully will see light of day within the next month or so.

I do have some reservations about their product, though.  While I think this is a great application for 3D printing technology, I am an iPhone user and I have been through a few different cases. The first one I had was super minimal. Since I carry the phone in one of my pants pockets and the my favorite part of the form factor was how slim it was compared to my Treo 680, I wanted a case that didn’t bulk up the profile. The one I got barely wrapped around the edges, was a single piece of plastic and was minimal as it gets. After a year of loving use (read abuse) I had to exchange my phone for a factory refurb because of some issues with the audio jack.

When I removed the cover that I had used for the last year, I discovered that because their wasn’t a perfectly tight seal between the phone and the plastic tiny particle of pocket matter had managed to get in between the phone and the case and proceeded to scratch the ever-living daylights out of the iPhone’s mirror black, oh-so-pretty finish. While the case certainly did its job against falls, it actually performed worse for scratches than a bare iPhone would have done.

Aluminum Prototype

I’ve begun to redesign classic pieces of (mid-century) modern furniture as knockdown/flat pack items. The idea is to be fully functional and life size. I will post soon about the whole goal and ideas of the Knockdown Knockoff line, but, right now, after a LONG night, I want to revel in what I consider to be a very successful prototype.

Here are preliminary, pre-touch-up photos of the chair. I will eventually give this design away in the Downloadable Design section of this site and it may end up as an Open Design in/on the site of a company that I am putting together for a Spring 2010 launch.

Anyhow, here are the pics:

The design is made of 1″ birch plywood with aluminum and black melamine veneer. It uses cross dowels to hold it together. The canvas upholstery references the earliest versions of the LC4 chaise. Unlike the original, though, the canvas snaps to the frame here so that customer assembly is easier.

This prototype allowed me to explore a few things including CNCing ply with the veneer already applied, canvas seating, and CNC setup for cross dowels without secondary processes. Aside from sanding and finishing the wood edges with low VOC finish, the frame was ready to go off the CNC.

Please let me know your first impressions.

Wireless electricity is NOT a good option for cell phones

I am getting very frustrated with all the attention to wireless charging systems that has been popping up lately. I think the technology is cool. And “space age” (though actually almost as old as our understanding of electricity). What no one focuses on, though, is that it is horribly INEFFICIENT. My understanding is that companies are striving for 50% efficient power transfer in the next few years. This means that if you are charging your cell phone, which already depends on crappy batteries, (ALL batteries are crappy, so don’t respond with something about lithium this or that) you are not only losing the power lost from the batteries, but also the power lost from transferring that power TO the batteries.

When I was working on a power wheelchair design for severely disabled people, I could see the absolute reason for why this technology can and should be used. In a case where something MUST be charged and the user has limited abilities, a 50% power loss is relatively unimportant. My old Interplak toothbrush from the early 90s used a wireless charging system because it couldn’t handle getting its contacts wet. Not AS important, but still understandable. But a phone charger? We need a standard style charger (which, I understand, is in the works) and they need to NOT come with our electronics. Buy it separately. That way, when you upgrade your phone, you can use your old charger. This will reduce our waste in production of needless chargers and make a wired charger EVER MORE efficient versus a wireless charger.

Rubber Sole

Despite the way this starts, this is NOT a shoe review.

I have spent this summer wearing a pair of Blackspot Unswoosher V2 shoes. Since the mid 90s, I have been a fan of John Fluvog’s shoe design. When I found out that he designed an “unbranded” pair of shoes that were to be manufactured in a sustainable, labor friendly way, I had to check them out. Here’s a glimpse at my Unswooshers:

There are only two kinds of men’s shoes in this world: those that can be re-soled and those that can’t. I detest companies that charge a lot of money for shoes that don’t have a mid-sole and therefore can not be re-soled (Steve Madden, for example). I pronate (put my weight on the outside of my foot when I walk) and with my 200-ish lbs, I can wreck poorly made shoes in less than 2 months.

The Unswoosher not only had a mid-sole but it has recycled tire soles. I’m not talking about what Timberland is doing where they are mixing the existing rubber with some virgin rubber and being molded into a conventional looking sole. The shoe has treads and it is awesome.

Turns out, even more important that knowing that come this winter I will leave the coolest looking tracks in the Denver snow, the soles show NO wear after 2 months of consistent wear. Apparently, me weighing a good deal less than a car has something to do with it.

So what do I take away from this? Colorado has 1/3 of the nation’s scrap tires. I understand that it takes work to separate the tread of the tire from the steel bands (unless you’re a late 90s Ford Explorer). Still, there is a tremendous resource here. What is insufficient tread depth for a car is more than sufficient for a person. Car tire soles could easily be offered as an option for when shoes get re-soled. I would love for my 12+ year old Frye boots to get tire soles the next (3rd) time they get soles.

I can not find a company that is doing this as an option for the repair market. Someone should. Let me know if you have more info about this.