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A perfusion method for perfusion molding of special-shaped coil skeleton

A technology of infusion molding and special-shaped coil, which is applied in the field of infusion and infusion molding of special-shaped coil bobbins, can solve problems such as difficulty in infusion molding of special-shaped coil bobbins, and achieve the effects of ensuring integrity, convenient demoulding, and simple and convenient operation.

Active Publication Date: 2018-01-26
XIAN NORTH ELECTRO OPTIC TECH DEFENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the adhesive is difficult to infuse and form the special-shaped coil skeleton of the product, the present invention proposes a filling method for the infusion and molding of the special-shaped coil skeleton

Method used

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  • A perfusion method for perfusion molding of special-shaped coil skeleton
  • A perfusion method for perfusion molding of special-shaped coil skeleton
  • A perfusion method for perfusion molding of special-shaped coil skeleton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A perfusion method for perfusion forming a special-shaped coil skeleton, characterized in that: the method specifically includes the following steps:

[0032] Step 1, pretreat the adhesive, and degas the adhesive by means of agitation and pressure drop, that is, alternately vacuumize and normal pressure;

[0033] Step 2, install the workpiece, take out the four positioning modules 2 of the molding tool, apply a thin layer of grease to all parts that can touch the adhesive, and check the first glue hole 8 and the second glue hole of the molding tool The unimpededness of the hole 9 and the vent hole 12; place the unencapsulated coil bobbin 18 at the center of the molding tooling, wrap the coil bobbin 18 with 4 positioning modules 2 and initially position it; place the 4 positioning modules 2 through the pressure ring 4 Compaction and close contact; use four rubber plugs 7 to block the central hole of the coil skeleton; seal the connection between the top of the coil skele...

Embodiment 2

[0036] A perfusion method for perfusion molding of a special-shaped coil skeleton, specifically comprising the following steps:

[0037] Step 1, pretreat the adhesive, and degas the adhesive by means of agitation and pressure drop, that is, alternately vacuumize and normal pressure;

[0038] The specific steps of alternately carrying out vacuuming and normal pressure are as follows: first, place the adhesive under the electric mixer in the vacuum box, and use a lifting platform to place the stirring rod in the material box containing the adhesive; Stir the adhesive for 2 to 5 minutes, then pump the pressure to 0.05 to 0.06 MPa, keep it for 1 to 4 minutes, and slowly lower it to normal pressure. After the extracted air bubbles subside, continue to vacuum and stir slowly. Repeat this process. The adhesive is defoamed; finally, put the stirred adhesive into a high-temperature box and keep it warm for 10-15 minutes at a temperature of 40-70°C, and wait for potting. The adhesive i...

Embodiment 3

[0047] On the basis of Example 2, the adhesive is composed of components A, B and C in a mass ratio of 50: (1-5): (5-8); the A Components are liquid polysulfide rubber with a molecular weight of 1200-3000 and liquid epoxy resin mixed at a mass ratio of 1:1; component B is triethylenetetramine; component C is silicon micropowder of 1200-2000 mesh.

[0048] The preparation method of adhesive is:

[0049] 1) Weigh components A, B and C according to the mass ratio of 50:(1-5):(5-8);

[0050] 2) After mixing the components A and B of the formula amount evenly, a mixed solution is formed;

[0051] 3) Add the formula amount of component C to the mixture in step 2), and stir evenly.

[0052] The adhesive of the invention adopted can ensure the bonding effect, and meanwhile, the fluidity of the adhesive is optimal.

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Abstract

The invention relates to a pouring method for pouring molding of a special-shaped coil former. The method includes the following steps that first, pretreatment of adhesives is performed, the adhesives are subject to defoaming treatment in stirring and pressure drop modes, and stirring under vacuumizing and stirring under ordinary pressure are carried out alternately; second, workpiece installation is conducted, and the coil former is placed into a molding tool; and third, filling and sealing are carried out, and a four-opening synchronous filling and sealing tool is used for pouring the four surfaces of the coil former at the same time. By the adoption of the tool and the pouring method thereof, the molding quality of coil pouring of a seeker product is guaranteed, reliable performance of the product is ensured, and production efficiency is improved.

Description

technical field [0001] The invention relates to an infusion method, in particular to an infusion method for infusion molding of a special-shaped coil frame. It belongs to the technical field of assembly process of a certain product. Background technique [0002] The process of pouring adhesives into special-shaped and narrow spaces is used in the potting of the coil skeleton of some products, mainly to insulate the copper coil from the outside world and fix the position of the copper coil. The coil bobbin is assembled on the outer edge of the gyroscope of some products, and the copper coil on it generates a magnetic field to control the orientation of the gyroscope of some products. The position and tightness of the copper coil directly affect its electrical and magnetic properties, which in turn affects the azimuth indication performance of some product gyroscopes and the reliability of the product. [0003] The current coil bobbin is a special-shaped component composed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C39/10B29C39/22B29B13/00B29B13/02B29B7/00
CPCB29B7/002B29B13/00B29B13/02B29C39/10B29C39/22
Inventor 马军伟郝娟蔺玲安平张锐
Owner XIAN NORTH ELECTRO OPTIC TECH DEFENSE
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