Multifunctional pouring hopper

Abstract

The invention relates to a multifunctional pouring hopper, which is characterized by comprising a hopper cavity and a guide plate. The hopper cavity is formed by welding four side plates and the upper opening of the cavity is larger than the lower opening. The lower end of the hopper cavity is welded on the guide plate. The upper end of the guide plate is semi-circular. The hopper cavity is located at the upper part of the semicircle. Guide openings corresponding to a mould pouring opening are arranged at an intersection of both side surfaces of the hopper cavity and the guide plate. The lower end part of the guide plate enters the mould cavity from the pouring opening. With adoption of the invention, bubble in a mixture in a vacuum tank decreases automatically to reduce the possibility that the bubble flows into the pouring mould and relatively improve the degassing degree of the mixture, and meanwhile the multifunctional pouring hopper pours the mixture at a constant speed and with a constant amount to the benefit of returning bubble outside by the pouring mould so as to improve the quality of the electric performance of the product. In addition, the invention further has the advantages of a simple structure, reasonable design and is easy to manufacture.

Description

technical field [0001] The invention belongs to the technical field of transformer epoxy resin pouring, in particular to a multifunctional pouring funnel. Background technique [0002] Due to the size of the resin pouring port area of ​​the epoxy resin casting mold of some transformers is limited by the small volume of the product, the pouring port area of ​​the casting mold is small, so that the discharge port is aligned with the casting mold when pouring the mixture in the vacuum tank The sprue gate brings difficulties. A common solution is to place a funnel on the sprue of the pouring mold to expand the area of ​​the sprue, reduce the difficulty of aligning the discharge port of the vacuum tank with the sprue of the pouring mold, and make it easier for the operator in the pouring process to align the pouring operation Some. The traditional trumpet funnel has the disadvantage of single function. It only meets the function of collecting the resin mixture and letting the r...

AI Technical Summary

Problems solved by technology

Bubbles in the pouring body are very harmful to the electrical performance of the transformer, which can easily lead to breakdown, partial amplification, and product scrapping.

[0005] 2. Because the flow rate and flow rate per unit time of the mixture flowing out of the pouring tank are not uniform in the beginning, middle process, and end stages, that is to say, the mixture does not enter the pouring mold cavity at a strict uniform speed and amount from the beginning to the end. In this way, it is easy to nest the air bubbles in the cavity of the casting mold, and it is difficult for the air bubbles to return, causing future troubles

[0006] 3. Since the mixture falls from the discharge port of the pouring tank, which is more than 400 mm higher than the casting mold, splashing occurs around the pouring port of the mold, resulting in waste of the mixture, and at the same time, the surrounding casting molds are splashed and mixed materials, increasing the labor and man-hours for cleaning the mold

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