How is the mold overall structure designed
The concept and consciousness of precision and positioning precision are the basic concepts and consciousness that must be established by mould designers.Die precision includes die assembly and zero, component position and shape dimension precision, mating precision and positioning precision.Such as punching die blanking clearance value and its uniformity, plastic injection mould, die-casting mould clamping positioning and orientation precision, etc., are required by the shape and position precision of convex die and concave die and guarantee the position of guide and cooperate with precision.
In general, strict dimension precision design and calculation are required in mold design.At the same time, it is necessary to take into account the manufacturing technology of the parts and the precision of ding and yi, so as to ensure the precision performance and reliability of the mould.
The direction of mold movement is guided by the guide device.At the same time, the guide device also plays a role in locating the uniformity of die clearance and accurate die movement.A commonly used guide device consisting of guide column and guide sleeve (including sliding and rolling fit);Guide plate guide device (including general guide plate pair and self-lubricating guide plate pair).Die feed guide plate guide, etc.
The guide device of mold movement direction, because it plays the role of precise guidance and precise positioning, requires high precision and good guide rigidity, etc., and usually adopts over-positioning guidance.
release, discharge and core-pulling design of plastic injection mould, die-casting mould stripping structure and mechanism design of discharge structure and design of progressive die, and core-pulling mechanism design, and mold the key technology of the overall design.
Plastic injection mold, die casting mold, usually used on the surface of the design of the stripper slant, and at the same time in the die setting mechanism.The parts of the top mechanism have been standardized.
Discharge of punching die. Usually adopt the method of designing the leakage hole on the concave die, designing the punching mechanism or design the air hole on the convex die, and using the compressed air to blow the material.
The core-pulling mechanism of plastic injection mould and die-casting mould usually adopts such methods as inclined wedge core-pulling mechanism, hydraulic cylinder core-pulling mechanism or gear mechanism.
feeding and cooling system design of feeding and security agencies of progressive die design, plastic injection mould and die-casting mould of feeding and pouring system design, the cooling system design, is to mould the key technology of the overall design.Some of the parts and components used have been formed
Standard products for users to choose when designing.
Flow support and fastening die frame are the main supporting parts of the mould.Die set points on the mold base (or dynamic model) and the lower mold (or die) two parts, the mold is fixed on convex mold and concave die and accessories and fittings, die casting and plastic injection mould in die setting part is set top institution.The die holder is also the supporting part of feeding mechanism and core pulling mechanism.In addition, the punch die plate, the plate and stripper plate supporting accessories, plastic injection mould in the block, supporting plate and ejector plate fixed are has some functions such as standard bearing parts.
Mould fixation and connection, rigid and elastic.Bolt and pin are usually used for rigid fixation and connection.Pressure of material and stripper plate are connected by elastic, and the mold base (or dynamic model) and the lower die block (or module) connection is made between guide pillar and guide sleeve device such as a guide and connected in the clamping movement, to complete the processing and molding parts.
In a word, the basic conditions of mold design include: drive, drive and movement of mold;Mold surface structure and design;Mold overall structure and design.This is an overview of the overall structural design elements of the mold, a summary of the key technologies of the mold design method, and a basic principle or method of mold construction and work.