Casting plant. Drawing, description

HOME WORKSHOP
Free library / Directory / Home Workshop

Casting plant. home workshop

Home Workshop

The modern "retro" style requires decorating pieces of furniture, fittings, the interior of the apartment with a multitude of repetitive, intricate configuration details; often enthusiasts undertake to make them carved - from soft woods, bent from metal strips, minted on copper. But modern chemistry gives us such a great material for such work as plastic. It is enough to make a shape - and any detail can be repeated as many times as you like. A simple casting plant, which greatly simplified and accelerated the production of such "small things", was designed at SYUT-2 in the city of Taganrog.

Press. The first thing that was required for the injection molding plant we conceived was a press: after all, the parts were supposed to be received under pressure. The training press available to us, produced by the industry, was not suitable, since it did not create sufficient pressure during stamping. We decided to make our own.

The hydraulic jack produced by the Baranovichi plant was taken as a basis. This is a powerful and reliable mechanism: it develops a force of up to 12 tons, has a piston stroke of 150 mm and an auxiliary screw outlet of 80 mm.

The jack was installed on a steel base plate 20 mm thick and secured with two M12 bolts. At the corners of the plate, four holes were drilled for the racks and M16 threads were cut. Spacer tubes were put on the racks: the top plate lay on them, which was fixed with nuts and locknuts. The general view and layout of the press are clear from the figure and the diagram given here.

injection molding plant
Jack press

injection molding plant
Press layout: 1 - bottom plate (240x240x20 mm), 2 - jack, 3 - stand (pipe Ø 25 mm), 4 - coupler, Ø 16 mm, 5 - top plate (240x240x40 mi), 6 - jack lever

Melting "furnace". Its role is played by a home-made electric stove - in a thick plate with a lid, in a milled nest, a spiral from an electric iron with a power of 1000 W in porcelain insulation is laid. The plug for connecting the power cord was also taken from the iron. "Melting" on a box-shaped pallet with heat insulation from sheet asbestos is installed on the heel of the jack. On top of it is placed a block of parts that make up the actual casting part.

Foundry. It consists of a hollow cylinder with a bottom and a tightly fitted, ground-in piston with a syringe hole. Plastic is placed in the cylinder, from which, after preliminary heating on the tile, the piston can be easily removed. The contents of the cylinder after being introduced into the piston should warm up slowly, reaching the required temperature in 40-45 minutes. The control sign of readiness and the end of heating is the self-punching of the molten mass through the syringe hole in the piston head. Now you can install a mold for casting a part on it, making sure that the casting hole of the mold and the injection hole of the piston match.

Having finished the preparatory operations, proceed to the actual casting. To do this, with the jack lever, the entire block is gradually moved up, all the way to the plate. In this case, the piston begins to be pressed into the cylinder, the plastic passes under pressure into the syringe hole, then through the injection hole into the mold and fills it.

injection molding plant

Scheme of the injection molding unit assembly (click to enlarge): 1 - jack screw. 2 - heel of the jack, 3 - upper plate of the press, 4 - mold, 5 - piston, 6 - cylinder 7 - tile, 8 - pallet with asbestos gasket

injection molding plant
Scheme of a casting pair cylinder - piston

injection molding plant
Electric stove diagram: 1 - base plate, 2 - plug, 3, 4 - covers, 5 - spiral

So that the plastic does not stick to the mold, you need to grease the inner surface with a thick soapy solution and dry it.

Of course, this method of manufacturing parts requires additional costs for tooling and fixtures. However, they are more than paid off by the quality of the parts received and the ability to "release" them in series, which is sometimes important.

Those interested in the installation may have a question: why does it consist of separate parts, and not combined into a "monolith", one whole?

This is dictated by technological convenience and the advantages of a collapsible option. When stamping parts from various plastics, it is possible to have several interchangeable cylinders. The furnace can be used and repaired separately; jack - as a general-purpose press, and not just for casting.

Author: V.Dvoeglazov

We recommend interesting articles Section Home Workshop:

▪ Worm wheel on a lathe

▪ Workbench-glass cutter

▪ pendulum saw

See other articles Section Home Workshop.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Three types of people 14.09.2011

Microbiologists divided all people into three types according to the set of bacteria living in their intestines.

An international team of scientists analyzed the DNA from intestinal bacteria of 39 people from different countries and came to the conclusion that, despite all the diversity of the intestinal flora, we are divided into three groups on this basis. They are named after the predominant bacteria: Bacteroides, Prevotella and Ruminococcus. Most of us are of the third type.

The composition of the intestinal community of bacteria does not depend on the age, weight, nationality, diet, or place of residence of the individual. The reasons for such differences are unknown, there are only assumptions: for example, the matter is in the characteristics of the immune system or in which microbe first entered the stomach of a newborn.

Other interesting news:

▪ Hydrogen biofuel

▪ Why can't you eat if you eat a lot

▪ Reduction of emissions from metallurgical enterprises

▪ Acer 4K monitor with NVIDIA G-Sync support

▪ Google Stadia

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Your stories. Article selection

▪ article Rippers for tillage. Tips for the home master

▪ article When did man begin to use a knife and fork? Detailed answer

▪ article Editor for the placement of programs and advertising materials of the radio station. Job description

▪ article Ornamental masses from casein. Simple recipes and tips

▪ article Knot on a cord. Focus Secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews