What preparations need to be done before injection mold production?


2020-11-27 18:22

1. Accept the task;
2. Mold design;

1. Accept the task

In the production of plastic molds, the customer engineering staff first provides product drawings to the mold manufacturer. The manufacturer collects, analyzes, and digests product data through the task requirements of molded plastic production, which is the acceptance task.

1. Plastic parts production requirements

Understand the technical requirements such as the purpose, manufacturability, and dimensional accuracy of the parts. For example, what are the requirements for plastic parts in terms of appearance, color transparency, and performance, whether the geometric structure, slope, and inserts of the plastic parts are reasonable, the allowable degree of molding defects such as weld marks and shrinkage holes, and whether they are coated or not. Post-processing such as installation, electroplating, screen printing, drilling, etc. Estimate whether the molding tolerance is lower than the tolerance of the plastic parts, and whether the plastic parts meeting the requirements can be molded. In addition, we must understand the plasticization and molding process parameters of plastics.

2. Process information

Understand the requirements of glue feeding method, beer machine model, plastic material performance, mold structure type, etc.
The molding material should meet the strength requirements of plastic parts, and have good fluidity, uniformity, isotropy, and thermal stability. According to the purpose of the plastic part and whether it is post-processed, the molding material should meet the requirements of dyeing, metal plating, decorative performance, necessary elasticity and plasticity, transparency or reflection performance, adhesiveness (such as ultrasound) or weldability.

3. Choose molding equipment
Injection capacity, clamping pressure, injection pressure, mold installation size, ejection device and size, nozzle hole diameter and nozzle spherical radius, gate sleeve positioning ring size, mold maximum and minimum thickness, template stroke, etc.

4. The specific structure of the mold
Two-plate mold, three-plate mold. Whether the mold structure is reliable, whether it meets the process technology of plastic parts (such as geometric shape, indicating finish and dimensional accuracy, etc.) and production economic requirements (low part cost, high production efficiency, continuous work of the mold, long service life, and labor saving Wait)

2. Mold design

1. Plastic parts ranking

Positioning of plastic parts refers to arranging one or more plastic parts according to a reasonable injection molding process and mold structure according to customer requirements. The ranking of the plastic parts complements the mold structure and the plastic processability, and directly affects the later injection process. The corresponding mold structure must be considered when ranking, and the ranking must be adjusted under the conditions of meeting the mold structure.
From the perspective of injection molding process, the following points need to be considered:

2. Drawing and ordering of quotation chart
a. The quotation drawing is the initial design plan of the mold, and also provides reference instructions for mold ordering. The quotation chart is a relatively detailed identification of the mold embryo and its structure and the size of the mold meat based on the original layout.
b. Material ordering is based on the quotation drawing, drawing a sketch of the mold blank and filling in the order form. When ordering materials, attention should be paid to selecting various mold materials according to the various requirements of the mold.

3. Mould structure design
The mold structure is determined by the type of injection machine and the characteristics of the rubber parts. The design focuses on the following aspects:
(1) Technical specifications of the injection molding machine;
(2) Process performance of plastic;
(3) The pouring system, including runners, gates, etc.;
(4) Molded parts;
(5) Common structural parts;
(6) Position organization;
(7) Ejector mechanism;
(8) Mold temperature control;
(9) Exhaust;
(10) Mold material.

Samshion Rapid Co.,Ltd provides rapid prototyping and Plastic Injection Molding services using CNC machining,injection plastic mold,mold maker,rapid injection molding,please Send us a message or give us a call to see how we can support you. 

Related Blog



3D printing from China manufacturer's complete printing knowledge

3D printing from China manufacturer is a kind of rapid prototyping technology, also known as additive manufacturing. It is based on digital model files, using powdered metal or plastic and other bondable materials to construct by layer-by-layer printing. Object technology.



3D printing from China manufacturer's slice processing knowledge

The printer reads the cross-sectional information in the file, prints these cross-sections layer by layer with liquid, powder or sheet-like materials, and then glues the cross-sections of each layer in various ways to create an entity. The characteristic of this technology is that it can make almost any shape of objects.



Aluminum Extrusion CNC process flow?

Most aluminum extruders use the traditional machined extrusion process with an extruder-on-a-boiler to form the aluminum-alloy bed in a large chamber.



Aluminum Extrusion CNC features?

A standard 5mm 3D printer extrusion can use standard 0.75mm filament to 3D print some parts5mm material is the easiest to print at the speed of the 3D printer.



How much do you know about stamping forming knowledge of china Metal products supplier?

The china Metal products supplier industry includes structural china Metal products supplier manufacturing, metal tool manufacturing, container and metal packaging container manufacturing, stainless steel and similar daily-use china Metal products supplier manufacturing, etc.



China Rapid tooling introduces the relevant knowledge of the design principle of the mold maker!

Different molding mold makers have been used in many fields. In addition, the manufacturing technology of professional mold maker has changed and developed in these years. Therefore, in this part, the general design rules of vacuum molding mold maker are summarized.

We aim to develop world class innovation capabilities

Keeping us the forefront cutting edge of digital manufacturing technologies

Copyright(C) Samshion Rapid Co.,Ltd All rights reserved.2010-2020 All rights reserved 

Powered by www.300.cn   zhongshan    SEO license