Fan blade injection mold

Abstract

The invention discloses a fan blade injection mold. The fan blade injection mold comprises an upper mold plate (1), a lower mold plate (2), a lower mold fixed plate (3), a mold seat (4), a product (5) and an injection molding opening. The lower mold plate (2) is fixed to the mold seat (4), and the upper mold plate (1) is located above the lower mold plate (2); the product (5) comprises a conical body (6), a plurality of blades (7) are arranged on the surface of the outer side of the conical body (6),and each blade (7) comprises a first arc-shaped segment (8) located on the tail of the blade (7), a linear segment (9) and a second arc-shaped segment (10) located on the tail of the blade (7); the opening direction of the first arc-shaped segments (8) is opposite to the opening direction of the second arc-shaped segments (10); and the tails of the blades (7) are scattered in the normal direction of a wind wheel conical surface. By means of the fan blade injection mold, natural demolding can be achieved

Description

technical field [0001] The invention relates to an injection mold, in particular to an injection mold for fan blades. Background technique [0002] At present, fan blades are applied in many industries. The basic principle is to accelerate air circulation, but the specific functions are different. Its application fields include large cabinets, personal computers, ventilation fans, household fans, motors, Hot melt guns, central air-conditioning ventilation fans and range hoods, etc. The air volume of the wind blade is the measure of the quality of the wind blade. The large air volume of the traditional wind blade needs to increase the volume of the wind blade, such as Figure 7 , there is a kind of supercharged fan blade, the root of each fan blade has an arc line transition to a straight line and then to an anti-arc line, and the tail of the fan blade is spread out according to the normal direction of the cone surface of the wind wheel, so that the rotation increases The wi...

AI Technical Summary

Problems solved by technology

[0003] According to the existing technology, this product is driven by a high-speed motor to rotate, and the concentricity of the product is required to be high. The center is the fulcrum and the weight around it must be balanced. The shape of each fan blade must be the same, otherwise the product will vibrate when it rotates, and the noise will be very loud

Therefore, when designing the mold, it is required to process on the same central axis. The product must be demolded naturally, not forcibly demolded, so as to avoid the deformation of the fan blades, so as to meet the product performance requirements. The product is mainly the fan blades. Core-pulling from a single angle is reversed; when designing the mold, the core-pulling route of the fan blade is irregular, and it cannot be pulled out with general core-pulling movements

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