Our company has a modern fleet of injection molding machines (thermoplastic - automatic) with a locking force of 90 to 320 tons and an injection volume of 230 to 920 grams.
Injection molding is a process in which plastic is changed from solid to liquid at high temperature and injected into a mold.
This method is used in various industries using modern materials with special properties, for example, when it is necessary to obtain particularly durable plastic products resistant to high temperatures and aggressive environments.
We provide plastic injection molding services from the simplest to the most complex. As a customer-oriented company, we carry out plastic injection molding even for small orders of several hundred pieces. Continuous 3-shift production, established relationships with suppliers of raw materials, constant quality control, allows you to quickly and efficiently carry out mass production of polymer products.
Plastic injection is the process of forming plastic products using a rigid mold, or. The polymer casting method allows you to create objects of any shape and size with tremendous design flexibility, both simple and very complex in design. This is a very common production method. In particular, car parts, 3D models, containers, POS materials and other products are produced by plastic injection molding.
Products for the construction industry | Products for the engineering industry | Plumbing products and more |
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household products | Various products for electrical engineering | |
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Good day.
1. Attention! Reading the title! It has the word "technology" in it. Therefore, I will try, if possible, to describe in detail exactly it, the technology, using an example, so that it would be clearer. The purpose of the article is to show the technology so that everyone can repeat if necessary.
2. It is not necessary to write what could be printed or milled on a 3D printer.
3. Each technology has its own advantages and disadvantages.
Everyone is free to choose how to achieve their goal.
So. Initial problem: when buying a car, a cradle was installed in it for cell phones, of course there was no adapter, buying an adapter is very expensive.
I decided to install an ordinary phone holder in this place.
I would like to:
1. That there would be a place for charging in it.
2. Turn towards the driver, like the original cradle.
3. Whatever looks like a collective farm.
I found a phone holder, but if you just screw it to the panel, there will be neither turning nor charging, so I decided to use a technology that has long been developed by dental technicians, namely: the manufacture of products from acrylic plastic by pressing on investment models.
I describe as detailed as possible, if I missed something, ask.
1. I removed the cradle from the car and unscrewed the base - on it I made an "imitation of the car" from gypsum.
5. After the gypsum has set, we immerse half of the cuvette in cold water for 10 minutes to soak the plaster with water.
This is necessary so that the gypsum halves do not stick together, they can be easily separated.
The insulation will be better. if the saturation of gypsum with water is done in a soapy solution.
He closed the cuvette with the second half and filled it with plaster.
6. After the gypsum has set, place the cuvette in boiling water for 10 minutes.
If you keep it in boiling water for longer, the wax will begin to impregnate the gypsum and the isolac will be worse on the gypsum. Well, some lumps will remain from the wax - they can be stung with a soft brush while the plaster is hot.
With pincers he took out a cuvette, opened it, washed the wax with boiling water.
Received a plaster mold.
At this point, you can still gypsum where you need to slightly undermine.
If the plaster parts have broken off, you can glue it with superglue.
8. In glassware kneading acrylic plastic. In this case, colorless. It is used for the manufacture of prostheses, if a person is allergic to pink dyes. Close the lid until ripe (so that the monomer does not evaporate).
Plastics must be kneaded more than the volume of the part, so that pressure is created inside and the excess is squeezed out. If there is less plastic, then either the part will be defective (there will not be enough parts), or if there is no pressure, everything is porous.
9. Putting the plastic into the mold
11. After 10-20 minutes, we take it out of the press, tighten it into a clamp and put it in a pot of water.
12. Put in water for final cooling. Carefully open the cuvette.
Business idea for organizing small-scale production of products from various molding materials at home. Thanks to innovative technologies today, in the manufacture of plastic products, you can do without expensive injection molding machines. Moreover, you can set up small-scale mini-production right on your desktop. This business idea can be considered in two directions:
In the first and second cases, casting at home does not require large financial investments. You can start an injection molding business just now.
The manufacturing process is carried out using liquid plastics and silicone molds. Now it is possible to produce plastic products in small batches at home:
There are components for the manufacture of parts from thin-walled plastic, which can significantly expand the range of products and produce parts of any complexity. For example, mixing two components of the Axson FASTCAST F32 brand from a French manufacturer makes it possible to obtain a super-liquid plastic that flows into the smallest folds of the relief of the model's shape. In addition, it is harmless to children and has no smell.
To organize production, first of all, a sample model is required. According to it, you first need to make a mold from special silicone or polyurethane components. With experience and the quality of materials, you can learn how to remove molds from models at such a high level that you can even see fingerprints on products (if necessary). That is, a copy will turn out at the level of identity, which cannot be distinguished with the naked eye. Plastic products can be given complex compounds with any relief. If there is no ready-made model for a sample, but you need to make unique products, you can order it from the owners of a 3D printer. By the way, injection molding significantly exceeds the productivity of 3D printing from plastic.
When your product is ready, you can decorate it with the help of related products that are attached to liquid plastics:
Naturally, in some cases, creativity is indispensable, and you will have to manually paint the products, which may affect performance. But the creation of each business is undoubtedly a creative process. After all, financial management is an art.
Technology for creating an ideal small relief in the manufacture of a silicone mold with your own hands. First you need to prepare all the components and materials. We will need:
We securely fix the model-sample at the bottom of the formwork to form the form, using neutral wax clay (to avoid silicone leakage). We paint the silicone, from which the finished form will turn out in scarlet color, so that the quality of mixing the components of the liquid, white to the color of the plastic can be clearly seen on the form. Useful advice: in order for the shape to be perfect, the sample model should first be smeared with silicone using a wide brush. In this way, carefully fill in all the recesses of the relief of the compound. Only after that, fill the form completely. We fill the entire formwork with silicone. We leave to fix the structure of the form for 7-8 hours. The hardest part is over.
Congratulations!!! Now you have a ready-made form for the repeated production of copies of the sample model. Make sure the mold is completely dry before casting to avoid bubbles. Then we very carefully mix the plastic components 1: 1 by weight (for this it is better to use a pharmacy or laboratory electronic scale). The setting time is 7 minutes, but it will take another 20 minutes to fully consolidate. This plastic is neutral to silicone and does not stick to it. But after repeated use of the compound over time, you may need a lubricant release agent with the protective properties of EaseRelease. After the required time has elapsed, we take out the finished product, which is copied exactly according to the model.
Together with plastic products casting molds can be produced. The use of injection molds in construction is now very popular. It is possible to produce compounds for the production of building materials. They are durable and do not require treatment with special separating lubricants during manufacture. After all, concrete is absolutely neutral to polyurethane. For example, liquid polyurethane compounds allow you to make molds for pouring:
The use of mold casting technology in the food industry is quite obvious. New innovative solutions in the field of chemistry, today they offer liquid: plastics, silicones, silicone masses that comply with all health standards and have the appropriate certificates. Such safe components can be used to produce molds for the food industry. For example, for production:
Compounds are also in great demand among soap makers. They always need new original forms, to create salable souvenirs made from soap. It is not at all difficult to find a customer who wants to make their products with a unique shape.
This business idea makes it easy to create popular products with your own hands. Finished works can be sold through the online store. It is also possible to provide services or sell finished compounds to other manufacturers in other industries. Most importantly, with all these wide range of home business opportunities, the cost of the components is more than affordable. The range of components is wide and allows you to choose necessary materials to create shapes or fill them. All that is required is a sample model from which the form will be removed. Such a business idea is quite attractive for a home based business. It does not require a lot of costs, allows you to produce useful goods and captivates the creative process of production.
Plastic scrap can be found everywhere. Old broken things constantly appear at home, the street is full of bottles and packages. A lover of doing something with his own hands may have the idea to collect it all, grind it up and melt it into something of value.A beginner "caster" should not do this, since each type of plastic has only its inherent properties, so it would have to be melted at different temperature. In addition, in production, parts are usually cast in special installations, where high pressure.
Even if you manage to pick up pieces of plastic of the same kind and crush them, melting will result in bubbles. So it's best to go to a hardware store and buy liquid plastic, from which the parts are no less durable than factory ones. Can replace plastic epoxy resin. You will also need:
- silicone;
- large capacity;
- lithol.
If you still decide to make something out of plastic scrap, do not do it indoors. Plastic fumes are toxic.
Make a model of the part to be cast. Lubricate it with lithol or other lubricant. After that, make a shape. Silicone molds are becoming more and more popular. This is understandable, it is easy and convenient to work with this material, but several circumstances must be taken into account. Firstly, there are two types of silicone, pouring and coating. Secondly, each species has its own elongation coefficient and its own viscosity. As for the first parameter, silicone with a coefficient of 200% is suitable for plastic injection.
Pay attention to the viscosity coefficient. The smaller it is, the more accurate the shape will be. This is especially important if you are going to work with potting silicone. Consider also the polymerization time. If you have casting silicone, place the master model in a flask (it can be made of steel or, for example, bronze) and fill with silicone. Gently apply the coating material with a brush, taking into account all the irregularities. Let the silicone harden and then remove the master model.
The flask is a metal container. It should be slightly larger than the master model.
Many small parts are made of plastic. To take a piss necessary details, you will need special forms. They can be collapsible and one-piece. Let's talk about the intricacies of using both.
Instruction
If you are making a symmetrical part with a simple configuration, then use a collapsible mold consisting of two halves. When forming plastic casting models, simply press them into the uncooked plaster up to the plane of symmetry and let it harden. Moisten the front part of the second half of the mold with a weak soapy water, this will make the process of splitting the halves easier. At the top of the form do through hole 3-4 mm in diameter. After you have taken the model out of the mold, fold both halves and fasten them together with twine or rubber.
You can also use the one-piece form. Such forms are made of paraffin, then poured with a solution of gypsum, in the upper part there should be a hole with a diameter of 3-5 mm (sprue). After the mold has hardened, place it in cold water sprue side up and boil until the casting pattern is melted. Water displaces the paraffin from the mold and it floats to the surface. Then cool the water and remove a layer of paraffin from its surface. Repeat heating to remove paraffin residue from the mold. As a result, you get a cavity in the plaster that has the shape of the desired part.
If you need fasteners inside the future part, then insert them into the paraffin casting model, this will prevent it from moving during melting. For example, if a metal nut is required in a part, put it with a protruding bolt and fill everything with gypsum, after melting the paraffin, the gypsum will hold the nut in position. With this type of shape, cook the plastic in a glass dish, giving it the consistency of liquid sour cream.
Preparing plastics. Take the acrylate powder AKP-7, previously mixed with a solvent to the state of the test. Pour the mass into the mold, after moistening it. Hold the filled mold at room temperature for 15-30 minutes, and then seal it through the sprue hole with a wooden or glass rod.
The compacted mass must retreat from top edge forms by 3-5 mm. Close the sprue hole with moistened cellophane and plywood trim, then tighten with a clamp. Immerse all this in water at room temperature and bring to a boil, boiling should not be violent and last about 45 minutes. Then stop heating and hold the mold in water for 15-20 minutes.
Related videos
In the manufacture of various products from gypsum do not need a form for casting. The quality and durability of the gypsum product largely depends on the quality of the form. Modern technologies allow simple flexible form for casting materials such as silicone and polyurethane. Such a form may well be made even in a home workshop.
You will need
Instruction
Prepare a container for pouring. Use any sufficiently rigid material for this, for example, fiberglass, chipboard, wooden boards and even elements of the Lego children's designer. Sometimes it is possible to pick up and ready form or box right size. If necessary, clean the parts of the future container from dust and possible contaminants.
Connect the shell parts with any glue. The task is to ensure that the container does not have gaps and is firmly held as a whole. It is most convenient to connect the parts of the shell with the help of an adhesive melt filled into a special gun.
Take non-hardening sculpting clay and lay it evenly up to half of the container. Ordinary children's plasticine is too sticky, so it is not recommended to use it. Make sure the surface of the plasticine is smooth and free of crevices.
Place the product model in the prepared plasticine. Using a pencil, make locks in the form of holes. They are necessary so that during the manufacture of the casting in the future, parts of the mold do not move.
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