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Mold for glue injection of small transformer

A transformer and small technology, applied in the field of plastic injection molds for small transformers, can solve the problems of immersion, the insulation cannot meet the requirements, the transformer cannot be covered, etc., and achieve the effect of reducing consumption, increasing fault tolerance, and reducing the difficulty of use.

Pending Publication Date: 2022-01-28
永州精智电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this glue injection method, when putting the transformer into the glue injection mold, it is generally necessary to ensure that the end of the transformer with the coil terminal is facing upwards, and the amount of glue injected must be strictly controlled. If the amount of glue is too much, the wiring will be damaged The terminals are also submerged, which does not make use of the normal use of the subsequent transformer. If the amount of glue is too small, the transformer will not be effectively covered by the glue, and the insulation will not meet the requirements.

Method used

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  • Mold for glue injection of small transformer
  • Mold for glue injection of small transformer
  • Mold for glue injection of small transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, this embodiment is a mold for small-sized transformer glue injection, including a housing 1, on which is provided a housing cavity 2 for placing a small transformer, and the bottom of the housing 2 is provided with a housing hole 3, when the small When the transformer is put into the accommodation chamber 2, the accommodation hole 3 is used to accommodate the connecting legs of the small transformer.

[0024] The connecting leg 71 of the small transformer 7 in this embodiment is cylindrical, so the shape of the accommodation hole 3 in the mold is also circular, and the diameters of the two are the same, so that the connecting leg 71 and the accommodation hole 3 can fit closely , to prevent the glue from entering the accommodating hole 3 when injecting glue. The quantity and position of the receiving holes 3 are precisely matched with the quantity and position of the connection legs 71 on the small transformer 7 .

[0025] In this embodiment,...

Embodiment 2

[0030] The difference between this embodiment 2 and embodiment 1 is that the accommodating hole 3 in this embodiment penetrates the entire housing 1, so that even when glue liquid flows into the accommodating hole 3, the corresponding size can be used. The rod-shaped tool can be cleaned directly from one end of the holding hole 3 to the other end, and the cleaning is very convenient. At the same time, the inner wall of the holding hole 3 is coated with a protective film. Set hole 3. The protective film in this embodiment uses insulating grease.

Embodiment 3

[0032] The difference between this embodiment and Embodiment 1 is that the size of the accommodating hole 3 in this embodiment is larger than the size of the connecting leg 71, and the accommodating hole 3 is filled with a mud-like filling material. When the transformer 7 is placed in the accommodating chamber 2, the connecting leg 71 can be inserted into the filling material, so that the connecting leg will not be covered by the glue because it is inserted into the filling material when injecting glue. In addition, the size of the accommodating hole is smaller than that of the wiring The size of the feet is large, so that when the transformer is installed in the housing cavity, the wiring feet only need to be roughly opposite to the housing hole, and no precise matching is required, which improves the versatility and fault tolerance of the mold, and greatly reduces the difficulty of placing the transformer. ,Improved work efficiency. What the filling material in this embodime...

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PUM

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Abstract

The invention relates to a mold for glue injection of a small transformer. The mold comprises a shell, a containing cavity used for containing the small transformer is formed in the shell, and containing holes are formed in the bottom of the containing cavity; when the small transformer is placed in the containing cavity, the containing holes are used for containing wiring supporting pins of the small transformer; a glue discharging opening is formed in the shell and connected with the containing cavity, so that redundant glue liquid flows away from the glue discharging opening. According to the mold for glue injection of the small transformer, the containing holes for containing the wiring terminals of the transformer are formed in the bottom of the containing cavity, when the small transformer is placed into the mold, the wiring terminals can be embedded into the containing holes, and the situation that the wiring terminals contact with the glue liquid and are wrapped is avoided; and the glue discharging opening is formed in the shell, the redundant glue liquid can be discharged through the glue discharging opening, the effect of quantifying the glue liquid is achieved, it is guaranteed that the transformer is completely wrapped by the glue, the predicted insulation effect is achieved, and meanwhile the consumption of the glue liquid is reduced.

Description

technical field [0001] The invention relates to the technical field of transformer production, in particular to a mold for glue injection of a small transformer and a use method thereof. Background technique [0002] The transformer works on the principle of electromagnetic induction. When an AC voltage U1 is applied to the primary side of the transformer, and the current flowing through the primary winding is I1, the current will generate alternating magnetic flux in the iron core, making the primary winding and the secondary winding Electromagnetic contact occurs. According to the principle of electromagnetic induction, an electromotive force will be induced when the alternating magnetic flux passes through the two windings. Its magnitude is proportional to the number of winding turns and the maximum value of the main magnetic flux. The voltage on the side with more turns is higher. , the voltage on the side with fewer winding turns is low. When the secondary side of the t...

Claims

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Application Information

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IPC IPC(8): B29C45/26B29C45/14H01F41/12H01F41/00B29L31/34
CPCB29C45/26B29C45/14065B29C45/14819H01F41/127H01F41/005B29C2045/2683B29L2031/34
Inventor 张智周建熊国微
Owner 永州精智电子科技有限公司