Glue injection method for inductance component

Abstract

The invention discloses a glue injection method for an inductance component. According to the internal ring located glue injection, at least one layer of annular glue matched with a through hole in shape is injected in the through hole of the inductance component, wherein the two ends of the annular glue extend out of the two end faces of the inductance component, the peripheral surfaces of the extension ends are wavy, and the semi-finished inductance component is obtained; and according to the external ring encapsulated glue injection, glue is injected outside the semi-finished inductance component, and the glue layer at least covers the area not injected with glue except the area covered by the internal ring located glue injection, so that the two kinds of glue are jointed at a wavy interface. The inductance component manufactured with the method disclosed by the invention can resist high temperature, low temperature and high humidity, and is good in insulativity, stable in inductance value and low in cost.

Description

technical field [0001] The present invention is a low-pressure injection molding process for inductive components. This manufacturing process injects the hot melt adhesive of the packaging material into the mold with a very low injection pressure (2-40bar) and quickly solidifies and molds it (5-40 seconds). Achieve insulation, high temperature resistance, low temperature resistance, impact resistance, anti-electromagnetic interference, vibration reduction, moisture-proof, waterproof, anti-shedding, dust-proof, chemical corrosion resistance, etc., mainly used in the packaging and protection of precision and sensitive electronic components, especially It is suitable for the manufacture of current sensors and current transformers. Background technique [0002] Traditional injection molding process equipment systems generally have high costs, including expensive high-pressure injection molding machines, and must also have water cooling systems and relatively expensive steel mold...

AI Technical Summary

Problems solved by technology

[0002] Traditional injection molding process equipment systems generally have high costs, including expensive high-pressure injection molding machines, and must also have water cooling systems and relatively expensive steel molds. Generally, high-pressure injection molding processes require extremely high pressure due to poor fluidity of plastic raw materials. High pressure (350bar to 1300bar) can force the injection, so it is easy to pierce the tape, squeeze the coil to shift and crush the coil, etc., resulting in low resistance / inductance, high ratio difference, poor phase and other defects, and the product yield is low. , increased the manufacturing cost of the industry, especially after long-term use, the latent sequelae are gradually exposed, which is a hidden worry in the industry, and because the cooling time of plastic raw materials is long, the production is time-consuming, the output is low, and the manufacturing cost is high.

Images