When designing the template ring, the following principles should be followed:

1. The lifting balance should be considered in the main lifting direction of the mold. Two or four lifting rings can be designed, or the lifting module can be used for lifting.

2. The side of the mould is designed with turnover eyelets, which mainly play the role of mould turnover and are designed to be consistent with the main hoisting direction as far as possible.

3. Because the lifting rings on the square iron are often connected with the bottom plate for lifting, attention should be paid to design verification during design.

4. Don't design more than three kinds of eyelets on a set of molds at most, so as to avoid frequent replacement of eyelets by users during hoisting.

English name: eyebolt or eyering die ring is specially used for fixing and clamping between template and die base. When used with slings and chains, they are also used to hang heavy molds. They are also called eyebolts, eyebolts, eyenuts, etc. , which is quite different from that in sports. They are also called eyebolts, and belong to mold fasteners.

The die lifting ring includes a ring part and a threaded part, and has a unique tensioning structure. Generally, it can be divided into two categories: ordinary mold ring and new rotating mold ring. According to the connection mode, it can be divided into screw hole type and bolt type.