The principle of in mold injection molding, the working principle of injection mold?

The principle of in-mold injection molding is to put the printed decorative sheet into the injection mold, and then the gum.

It is injected on the back of the molded sheet to form a solid mold with the resin and sheet. In-mold decoration technology is IMD (In-Mold Decoration), which is mainly used for the decoration and functional control panels of home appliances and automotive dashboards.

Air conditioning panels, mobile phone shell lenses, washing machines, refrigerators, etc. are widely used.

It is a fusion printing, molding, molding, injection molding process technology.

As a whole, it will be the comprehensive use of plastic sheets, inks, and plastic resins. The injection molding resin is combined with the ink layer on the back of the film, and the panel and logo are placed between the film and the injection molding resin, and the logo will not be worn out due to friction or time.

How is the product injection molded? In order to fully understand the mold, it is necessary to grasp the principle.

Injection molds are parts that give shape and size to plastic in molding. Although the structure of the mold may vary depending on the variety and performance of the plastic, the shape and structure of the plastic product, and the type of injection machine, the basic structure is the same. The mold is mainly composed of three parts: the gating system, the forming parts and the structural parts.

Among them, the gating system and the molded parts are the parts that are in direct contact with the plastic and change with the plastic and the product, which is the most complex and variable part of the plastic mold, and requires the highest processing finish and precision.

The gating system refers to the part of the runner before the plastic enters the cavity from the nozzle, including sprue, cold material cavity, runner and gate. Molded parts refer to various parts that make up the shape of the product, including moving molds, fixed molds and cavities, cores, forming rods, and exhaust ports.

With the development of the world economy, the design requirements of industrial products pay more and more attention to fashion, environmental protection, and lightweight design, and the IMR process came into being, which has been widely used in all walks of life, from the earliest consumer products such as notebook shells, mobile phone lenses, household appliances and various decorative panels, automotive dashboards, automotive interior parts, medical instrument panels, cosmetic boxes, children's toys and so on.

IMR (in-moulddecoration by roller): Chinese supermodel interior decoration technology, is to print decorative patterns and functional patterns on the foil film through a high-precision printing machine, through a high-precision foil feeding device to send the foil into a special molding mold for precise positioning, through the injection of high temperature and high pressure of plastic raw materials. Transcribing the pattern on the foil film onto the surface of the plastic product is a technology that can realize the integrated molding of decorative patterns and plastics.

How does IMR work?

It is to print the pattern on a layer of foil, and the film is laminated with the plastic mold cavity by sending the film for injection molding, and the ink layer with the pattern is separated from the foil film after injection, and the ink layer is left on the plastic part to obtain a decorative drawing on the surface.

Advantages of the IMR process.

1.Integrated molding, simplified manufacturing process, reduce production inventory costs and man-hours, shorten product manufacturing cycle, and improve the production efficiency of Hengfan;

2.All kinds of reliability tests are of the highest level in the industry to ensure the stability and durability of products;

3.High automated production to ensure stable production with high yield;

4.The use of automatic printing and environmentally friendly ink, in line with environmental protection requirements;

5.It can be used for multi-color laughter and printing, such as wood grain, carbon fiber, metal color, etc. The surface texture and groove of the product can be colored at the same time. For transparent parts, it can be made semi-transparent. It has a three-dimensional texture.

6.The hard coat treatment (up to 3 hours of pencil hardness) is wear-resistant and aesthetically pleasing.

Key points of in-mold injection molding.

First, the product cannot have right angles, and excessive radians need to be large.

Second, it is necessary to consider the location of the product inlet.

Third, there are more mold barrels in the mold, and there is no requirement for the size of the barrel.

Fourth, there needs to be electrostatic equipment, so that the mold can better adsorb the mold surface.

Injection molders are a type of ordinary front-line workers. The main job of an injection molder is to operate an injection molding machine to produce plastic housings. The size of the housing is directly related to the size of the mold.

The principle of the injection molding machine is to melt the plastic grain file through the heating system of the injection molding machine and enter the mold, become the shape of the mold, and then cool down and shape through the cooling channel in the mold, and then release the mold into a product.

The injection molding production of all rubber products is similar, such as shoe soles, drinking glasses, sorting boxes, etc. The principle of operation is much the same.

Injection molders generally work standing up, which is more difficult.

Related Notes:Injection molding engineers are professional and technical personnel engaged in the formulation and improvement of injection molding process technology.

Injection molding engineers generally have a high school degree or above in plastic molds or injection molding, which belongs to the technical work, generally between 8,000-15,000 yuan. As work experience increases, the salary increases. The starting salary of practitioners with work experience is about 10,000 yuan, and after more than 2-3 years of work experience, the monthly salary level can reach more than 15,000 yuan.

The above content reference: Encyclopedia - Injection Molding Engineer.

In life, there are TV shells, washing machine shells, and air conditioner shells, which are all injection molds.

In short, injection molds.

It is a tool for the production of plastic products, mainly used for mass production, injection molds can provide complete structure and accurate dimensions for plastic products easily and quickly.

Introduction

The classification is complicated due to the large volume of injection molds used and the different fields of application. According to the molding characteristics, it can be divided into thermosetting injection molds and thermoplastic injection molds. According to the molding process, it can be divided into plastic transfer mold, blow mold, casting mold, thermoforming mold, hot pressing mold and injection mold.

Most plastic products are manufactured from injection molded or discreet molds, and for many companies, injection molds are an important piece of equipment necessary for them to produce a variety of plastic products. The products produced by injection molds have the advantages of light weight, high strength, good toughness, corrosion resistance, good insulation, easy coloring, easy molding, low cost, etc., so they have been widely used and won people's love and favor.