The preform mold structure is a mold structure used for manufacturing plastic bottles. It is composed of a number of parts, including the mold base plate, mold core, mold cavity, mold guide post, mold guide sleeve. Mold top plate, etc. The combination of these parts forms a complete bottle mold structure that can be used to produce plastic bottles of various shapes and sizes.
The mold base plate is the basic part of the mold structure of the preform, which is usually made of steel with high strength and wear resistance. The mold base plate is equipped with a mold core and a mold cavity, which are key components in the manufacture of plastic bottles. The shape and size of the mold core and mold cavity determine the shape and size of the final plastic bottle.
The gap between the mold core and the mold cavity is called the mold gap, and its size directly affects the quality of the plastic bottle. If the mold gap is too large, the wall thickness of the plastic bottle is not uniform, and problems such as deformation and leakage are easy to occur: if the mold gap is too small, the molding difficulty of the plastic bottle is increased, and problems such as uneven bottle mouth are easy to occur. Therefore, the control of mold gap is one of the important factors in the design of preform mold structure
The mold guide post and the mold guide sleeve are important parts in the mold structure, which are used to keep the position of the mold core and the mold cavity stable. The mold guide column is usually made of steel, with high strength and wear resistance; Mold guide bushing is usually made of copper, with good thermal conductivity and wear resistance. The precision and surface quality of the mold guide post and the mold guide sleeve have an important influence on the molding quality of plastic bottles.
The top plate of the mold is the upper part of the mold structure, which is used to fix the mold core and mold cavity.
And provides pressure and temperature control. The top plate of the mold is usually made of steel, which has high strength and wear resistance. The top plate of the mold is also equipped with a nozzle and a cooling system to control the molding temperature and cooling speed of the plastic bottle
The mold structure of preform is an important tool for making plastic bottles, and its design and manufacturing quality directly affect the molding quality and production efficiency of plastic bottles. Therefore, when designing and manufacturing the structure of the preform mold, a number of factors need to be considered, including the mold gap, the accuracy and surface quality of the mold guide post and the mold guide sleeve, and the pressure and temperature control of the mold roof. Only by doing a good job in these aspects can high-quality plastic bottles be produced.
Post time: Sep-27-2023