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Vertical pouring structure for mass production of well lids

A mass production and manhole cover technology, which is applied to casting molding equipment, casting molds, cores, etc., can solve problems such as low efficiency, large waste of molten iron, and dangerous handling, so as to speed up molding speed, eliminate hidden dangers in operation, and improve appearance quality Effect

Active Publication Date: 2017-06-13
CANGZHOU JIUNAI METAL PROD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in the process of producing manhole covers, the casting method using a single sand box for pouring has low efficiency, large waste of molten iron, and there are problems such as handling hazards

Method used

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  • Vertical pouring structure for mass production of well lids
  • Vertical pouring structure for mass production of well lids

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention will be further described, as appended figure 1 , figure 2 As shown, firstly, the clay sand mold 3 with a size of 1200mm×1200mm and the coated sand mold 1 with a size of 1200mm×1200mm are arranged alternately and orderly, placed on the platform, and the mold cavity 4 is obtained after the mold is closed. Then cover the iron plate 6 on both sides and the facade of the sand mold to fix it, changing from "without box" operation to "with box" operation. The upper part of the cavity 4 is provided with gates 2, and each gate 2 is connected with the pouring machine, and molten iron is poured into all the cavities 4 at the same time. According to the demand of the manhole cover, determine the pouring speed, and incubate with the flow until the cavity 4 is filled. Repeat the above pouring procedure until all the cavities 4 are poured. After cooling, take out the manhole cover from the sand mold, process th...

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Abstract

The invention discloses a vertical pouring structure for mass production of well lids. The vertical pouring structure comprises a plurality of clay sand molds, a plurality of film covering sand molds and a platform. The dimension of the clay sand molds and the dimension of the film covering sand molds are both 1200 mm*1200 mm. The clay sand molds and the film covering sand molds are arranged on the platform alternately and orderly. After the clay sand molds and the film covering sand molds are combined, cavities are formed, and the upper portion of each cavity is provided with a pouring gate. After the clay sand molds and the film covering sand molds are combined, the two sides and the vertical surfaces of the sand molds are additionally provided with iron plates for fixing. According to the vertical pouring structure, through mixing usage of the clay sand molds and the film covering sand molds, the defect that existing clay sand molds are poor in air permeability is overcome, and the appearance quality of the well lids can be remarkably improved; and by the adoption of the vertical pouring structure, the forming speed of the well lids is increased, operation hidden danger is eliminated, and mass production of the well lids is achieved.

Description

[0001] Technical field: [0002] The invention relates to a pouring structure for producing manhole covers, in particular to a vertical pouring structure for producing manhole covers in batches, and belongs to the field of casting. [0003] Background technique: [0004] The traditional vertical split injection molding process is used in the casting production of manhole covers, but this process also has its shortcomings and limitations in the production of large manhole covers. For vertical split injection molding, for large cavities, especially for molds with deep cavities, the hardness of the sand mold is not easy to be uniform. When the large manhole covers arranged in a string are poured, the adjacent sand molds to be poured behind them have serious moisture migration. Due to the migration of water, a high-humidity layer appears in the mold, which greatly reduces the strength of the sand mold. Therefore, under the dynamic and static pressure of the molten metal, the cavi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/20
CPCB22C9/02B22C9/20
Inventor 邢庆江邢福祥
Owner CANGZHOU JIUNAI METAL PROD CO LTD
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