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Extrusion mold design plan in the whole process of extrusion molding of plastic profiles, for the melted plastic extruded from the flame-retardant plastic machine, the extrusion die plays three roles of stabilizing the flow, separation and shaping.

Extrusion die design scheme in the whole process of extrusion molding of plastic profiles, for the molten plastic extruded from the flame retardant plastic machine, the extrusion die plays three roles of stabilizing the flow, separation and forming.

According to the extrusion die flow path extrusion of plastic molding products, according to the gas gap, the introduction of the mold to carry out the mouth of the die set and volatile cooling, zui finally become plastic profile products.

The exit cross-section must be properly shaped.

The basic provisions of the extrusion mold flow path: the cross sectional shape of the profile blank extruded from the die mouth is not the zui final cross sectional shape of the product, zui is more of a similar shape.

Profile billet extrusion stamping die, by the traction belt according to the gas gap into the stereotypes stamping die, less suffer three kinds of effects that can not be ignored.

Out of the mold surge, Lashin deformation, volatilization to the cold collection, change the shape of the parison cross-section and specifications of the extrusion mold exit cross-section shape design plan bixu consider the results of such an effect.

Separate from the film surge, polymer solute extrudate specifications and cross-sectional shape and extrusion mold is not the same, significant surge, this type of condition is also known as the Barras effect, also known as off-type surge or export surge.

Uniform extrusion molding aluminum profile batter child: in the stamping die exit, the raw material flow cross-section of each part of the mean value of the water flow bixu the same (also known as the water flow throughout the uniform).

Difficulties: the vast majority of profiles for thick-walled aluminum profiles, general cross-section shape is more complex, wall thickness are not completely the same. Especially the profile of a variety of functional block rocking roll structure most is not a standard geometric shape.

The shape of each part of the batter is not the same. The part with fast water flow is elevated in volume compared with the part with slow water flow, and it is not possible to ensure the regulation of the cross-section shape of the aluminum profile product.

The way : bixu regulates the frictional resistance of fluidity in the separation path at each place. In addition, the middle of the front and back left and right sections of the separation road of each part of the profile are related to each other, and the flow path design plan of the separation part also jeopardizes the water flow in the flow path of the molding part all over the effective flow path design plan.