1. Material selection

The greenness of the mold material has a very important impact on the green performance of the final product. The choice of materials for green design must be based on green materials, abandoning the chemical methods used to surface the materials in the past, and replacing them with physical methods to achieve corrosion protection or easy release. Choose high-quality mirror mold steel to process mold cavities; use stainless steel to process anti-corrosion molds instead of electroplating; or replace electroplating with nickel-phosphorus plating that is less harmful to the environment.

The basic properties that green materials should have are:

(1) Low pollution, low energy consumption and low cost;

(2) No pollution or less pollution during easy processing and processing;

(3) Degradable and reusable.

2. Design standardization and standardization

Mold standardization is the prerequisite for the professional production of molds. The professional production of molds is the key to improving mold quality, mold manufacturing cycle and cost reduction.

Adopt and purchase standard formwork and other standard parts. The mold base and standard parts are produced by specialized manufacturers and enterprises through social division of labor, so that limited resources are optimally configured. Molds are usually only used after scrapping, but the formwork is still completely intact, so the use of standard formwork helps the formwork to be reused.

There are many types of molds for stamping and injection molding, and these mold bases are basically composed of standard upper and lower mold bases, guide posts and guide sleeves. At the same time, the standardization of the formwork can greatly reduce the equipment used to produce the formwork, thereby saving resources. Also good for management. Standardization and standardization of each structural unit of the mold. This speeds up design, shortens design cycles, and facilitates process management.

3. Detachable design

During the use of the mold, some parts are subject to excessive friction and impact and wear. At this time, only need to replace this part of the mold can still be used. In addition, sometimes a new product can be produced by simply changing the working parts. Not detachable not only causes a lot of waste of reusable parts and materials, but also seriously pollutes the environment due to poor disposal of waste.

Therefore, the problem of disassembly should be considered at the beginning of the design:

(1) Select the general structure as much as possible for replacement.

(2) Under the premise of meeting the strength requirements, try to use detachable joints. If threaded connection, no welding, riveting, etc.

4. Manufacturing environment design

Noise and pollution in mechanical workshops, especially in press shops, are very serious. It poses a great threat to the health of the staff and interferes with the tranquility of the surrounding area. Therefore, the noise generated should be controlled during mold design. Even eliminated.

There are several ways to eliminate machine noise:

(1) Replace the gear transmission with a v belt;

(2) replacing the rigid clutch with a friction clutch;

(3) Do the dynamic balance of the revolving body such as the flywheel;

(4) Cover the main part of the noise generated by the press;

(5) Use a non-impacting mold frame with a shock absorber.

5. Packaging design

The design of the packaging program mainly includes three aspects: the selection of packaging materials, the improvement of packaging structure and the recycling of packaging materials and their waste. The use of packaging materials and waste have a huge impact on the environment, especially materials that are difficult to recycle or difficult to degrade, which can only be incinerated or buried.

Therefore, the packaging of the product should be as simple as possible and use green packaging materials (non-toxic, pollution-free, easy to recycle, easily degradable materials), which can reduce the waste of resources and reduce environmental pollution.

6. Recycling design

The mold recycling process considers the possibility of recycling after use of the mold and the method and cost of recycling in the design stage of the mold. The main content of the recyclability design includes recyclable materials and signs, recycling treatment methods, technical and economic evaluation of recycling and recyclable structural design.

The main measures are as follows:

(1) Use materials that have a greater impact on the environment than mold materials, such as non-toxic and harmless materials, renewable materials, and easily recycled materials;

(2) use reusable materials;

(3) Renovation, rework, etc. of used mold parts.