Plastic Injection Mould Regular Inspection, Timely Replacement

The resin is melted by the shearing stress of the screw, and the molten resin corresponding to the molded product and the main flow path and the branch channel is retained at the front end of the barrel (called metering), and the material of the screw Into the mold cavity, its maintenance and maintenance methods are:

The following are the same as the

First, should always keep the Plastic Injection Mould thimble, guide column lubrication (to choose the most suitable lubricant), and regularly check the thimble, guide column, etc. whether the deformation and surface damage, once discovered, to be replaced.

The following are the same as the 

Second, pay attention to the surface of the Plastic Injection Mould maintenance, it directly affects the surface quality of the product, the focus is to prevent corrosion, therefore, choose a suitable, high quality, professional anti-rust oil is particularly important.

The following are the same as the

Third, each secondary Plastic Injection Mould should be equipped with resume card, detailed records, statistics of its use, care (lubrication, cleaning, rust) and damage, which can be found which parts, components are damaged, the degree of wear to provide discovery And information to solve the problem.

The following are the same as the 

Fourth, after the end of each production cycle should be on the Plastic Injection Mould belt heater, bar heaters, heating probes and thermocouples with ohm meter to measure, if damaged, to be replaced, and with the mold resume To compare, make a record, in order to find the problem timely, to take countermeasures.

The following are the same as the 

In addition, we should also disable the wire, steel and other hard objects to clean the Plastic Injection Mould, so as not to scratch the surface, if corrosive injection caused by the rust point, to use grinding and polishing, and sprayed with professional anti-rust oil.

The first is the plastic parts analysis:

1. To understand the plastic parts design requirements, carefully read the plastic parts parts map, from the product of plastic varieties, plastic parts shape, dimensional accuracy, surface roughness and other aspects of Plastic Injection Moulding process to consider the feasibility and economy, if necessary, Product designers explore the possibility of plastic material types and structural modifications.

2. Clear the production of plastic parts

Small batch production, in order to reduce costs, mold as simple as possible; in mass production, should ensure that the quality of plastic parts prerequisite conditions, try to use a multi-cavity or high-speed automated production to shorten the production cycle and improve productivity, Mold the introduction of institutions, plastic parts and flow of the body of the automatic stripping mechanism put forward strict requirements.

3. Calculate the volume and quality of plastic parts

Calculate the volume and quality of plastic parts is to use the Plastic Injection Moulding machine, improve equipment utilization, determine the number of mold cavity.

In addition, the choice of Plastic Injection Moulding machine, according to the volume or weight of plastic parts to determine the structure of the mold, the initial identification of Plastic Injection Moulding machine model, to understand the use of Plastic Injection Moulding machine and design mold related technical parameters, such as: , Nozzle tip diameter and spherical radius, Plastic Injection Moulding machine maximum injection volume, clamping force, injection pressure, fixed template and mobile template area size and installation screw hole position, Plastic Injection Moulding machine rod spacing, closed thickness, open stroke, Wait.

Followed by the mold design of the calculation:

1. Concave, punch parts working size calculation;

2. Cavity wall thickness, floor plate thickness determination;

3. Mold heating, cooling system to determine.

4. Finally, the mold structure design

1. Plastic parts forming position and sub - surface selection;

2. The number of mold cavity, the arrangement of the cavity and the flow path layout and the gate position setting;

3. The structural design of mold working parts;

4. The design of side - type and core - pulling mechanism;

5. Outlet design;

6. Pull the form of choice;

7. Exhaust design.

The overall size of the mold to determine the purchase of mold, mold has been gradually standardized, according to the manufacturer to provide the mold atlas, selected mold, in the above mold parts based on the initial design of the complete structure of the mold.

Checking the parameters of Plastic Injection Moulding machine

1. Check the maximum injection volume;

2. Injection pressure check;

3. Check the clamping force;

4. Mold and Plastic Injection Moulding machine installation part of the relevant size check, including closed height, open mold travel, mold seat installation size and other aspects of the relevant size check.