The Hobby Injection Molding Machine That Wins Customers

2022/01/31 By Topstar

Plastic Injection Machine Structure

Hobby injection molding machine are structured as follows:

Plastic injection machine construction
Control and operation system.
The operation of the press machine is as essential as the control system.
All models from low to high have this control system.
The control system helps us to choose the operating plan for each type of plastic product, for each plastic line.
PLC can fully automate the control system, or it can be partially automated.

In this section, we only give an overview of the control system in the injection molding machine but do not go into details.

Hobby injection molding machine mixing and liquefaction system

Mixing System Material mixing and liquefaction is the area that has the most significant influence on the plastic processing manufacturing technology process.

This system consists of the following main mechanical parts:

Cylinder barrel of plastic extrusion machine
Screw Plastic Extrusion Machine
Heating Resistors
Plastic input hopper
Plastic Glue Splitting System
Product forming mold system
The plastic product developing system is the mold system.

Plastic injection mold system

Plastic molds come in many forms and complex structures.

Whether plastic products are consistent and good depends significantly on the mold design and manufacturing stage. Hobby injection molding machine must achieve the following properties:

Sample Standard Profile
Materials Resistant to temperature, little known heat form
The surface gloss of the mold must reach a high gloss
Easily remove the product from the mold
Mold surface hardness must be high wear resistance.
Design a cooling system for the mold to dissipate heat during product cooling effectively.

Injection molding support system

Non-return Assembly
Nozzle

Clamping, Pushing Mold System in Hobby Injection Molding Machine:

Firstly, this is the Bracket, Clamp, and Push mold system during machine operation. The primary function is to open and close the mold.

Movable Mold Plate

Secondly, when the mold closes, the plastic from the nozzle pushes the liquid plastic into the forming mold. Thirdly comes the stage of cooling the resin in the mold and, finally, opening the mold to take the product out.

Mold Holder System Includes:

The ejector assembly of the plastic injection machine (Machine ejectors).

This mechanism is mainly designed as a Hydraulic Cylinder connected to an X-Section element.

The mechanical group holds the mold on the hobby injection molding machine (Clamp cylinders).

This is the mechanical part that holds the mold on the frame of the press machine. Duties have the mold firmly during pressing to ensure no pressure loss and product shaping.

Moveable platen plastic injection mold parts.

Plastic injection mold for injection molding machines always has two parts: one part is stationary, and one part is moving.

Stationary platen plastic injection mold.

It is the Fixed Part on the mold holder. This Mold part stands still and Shapes the product.

Tie bars to guide plastic injection molds

However, guide sliders are Round steels, usually with 4 bars. On the Guide Slider will mount the parter. When the hobby injection molding machine opens and closes the mold, the mold pieces will slide on this bar to perform the opening and closing operation.

Operating Principle of Plastic Injection Machine

In this paragraph, the operating principle is as follows:
Plastic raw materials feed into the injection molding machine periodically. After the plasticizer is injected into the mold, the mold’s shape will create the product’s shape.

Most importantly, the mold opening stroke is made to get the product after being shaped and cooled in the mold.
The feature of hobby injection molding machines is that the production process occurs in cycles. The cycle time depends on the weight of the product, the temperature of the mold cooling water, and the efficiency of the mold cooling system.

Injection molding Products

shaping Product
pulling
Quality checking
Import

The quality and productivity of the product depend on the quality of the injection molding machine and the quality of the mold.

Installation and Alignment of Plastic Injection Machines

The installation and alignment of the plastic injection molding machine is a rather complicated job. Although the manufacturer has built a complete plastic injection machine, each separate part must be disassembled during transportation.

After transporting it to the factory, we assembled the hobby injection molding machine. The critical when Assembling and aligning the plastic injection machine is 4 Tie Bars.

This Guide should align with the center of the Mold. Letting During the slide stroke of the die does not cause these 4 bars to break.

Ensure accuracy in Plastic Molding products.

In plastic injection molding, errors will occur, affecting the quality and aesthetics of plastic products. This article will present you with a fundamental and standard error: the silver error, which means that the plastic injection molded product is discolored.

Recognizing signs

Discoloration, also known as silver core in hobby injection molding machine, is where the surface of plastic products appears silver gray streaks, like scratches. These streaks will distribute in the direction of the plastic flow. With the naked eye, they will feel like plastic flakes.

The surface of the product is split into slabs and scales when cut across. Products with silver will be very susceptible to surface damage when exposed to complex objects.

The correct treatment direction

Moreover, this phenomenon causes the product’s appearance unsatisfactory and undesirable. Therefore, it is necessary to have the correct treatment direction by identifying the precise cause.

The cause of the silver error

Plastic is a type of chemical compound. When the plastic molecules encounter high temperatures, they will slowly decompose. The higher the temperature, the higher the resolution will be. The silver error in the hobby injection molding machine appears due to insufficient gas resolution.

The injection pressure and injection speed will be higher

If the gate size design is small, the injection pressure and rate will be higher. Compressing the air in the press chamber will take place too quickly, causing stress to roll back the air. Tiny air holes then form, causing the silver fault.

Plastic powder is mixed with impurities that cause discoloration

In conclusion, for some objective reason, some unwanted contaminants will integrate into the plastic, or some additive components may be combined in a hobby injection molding machine. Such foreign substances are incompatible with thermoplastics, which can cause discoloration of the product.

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The Hobby Injection Molding Machine That Wins Customers

Plastic Injection Machine Structure