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Lower mold for contact precoated sand mold

A technology of coated sand and mold, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., to achieve the effect of convenient and accurate fixing, ensuring efficiency and saving costs

Inactive Publication Date: 2019-01-08
YUZHOU KUNLUN MOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing problems, the present invention proposes a lower mold for the contact coated sand mold

Method used

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  • Lower mold for contact precoated sand mold
  • Lower mold for contact precoated sand mold
  • Lower mold for contact precoated sand mold

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Such as Figure 1~Figure 8 As shown, a lower mold for a contact coated sand mold, the mold includes a lower mold 1 and a lower mold 2, and a sand shell cavity for contact casting is provided between the lower mold 1 and the lower mold 2, and the sand The shell cavity is formed after the lower mold cavity 3 and the lower mold cavity 4 are closed.

[0023] The lower mold cavity 3 is composed of a first cavity 5 and a second cavity 6. The first cavity 5 i...

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Abstract

The invention provides a lower mold for a contact precoated sand mold. The mold comprises an upper mold and a lower mold; a sand shell cavity for producing a contact is formed between the upper mold and the lower mold; the sand shell cavity comprises an upper mold cavity and a lower mold cavity; two prolate sand shooting openings are formed in the front end of the lower mold; the sand shooting openings are communicated with the lower mold cavity; a boss is arranged at the front end of the mold; the boss comprises an upper boss and a lower boss which are positioned on the upper mold and the lower mold correspondingly; fixing holes for mold closing fixation are formed in the upper boss and the lower boss correspondingly. The mold has the following beneficial effects: large sand shooting openings are provided, and the sand inlet quantity of the large sand shooting openings is large and the sand shooting speed is low when precoated sand in the sand shooting openings enters the cavities, sothat the efficiency of the sand shooting openings is guaranteed, and sand inclusion and sand leakage caused by insufficient exhaustion when the sand shooting speed is too high can be avoided.

Description

technical field [0001] The invention relates to the field of tooling for core shooting machines, in particular to a lower mold for a contact-coated sand mold. Background technique [0002] At present, my country's foundry industry generally uses hot core boxes to manufacture sand cores. The production process is roughly as follows: the sand material mixed with foundry sand, thermosetting resin and catalyst is injected into the core box with a heating device through a core shooter, and heated to 250 to 320 degrees Celsius to make the sand material close to the surface of the core box When heated, the binder in the sand can be polycondensed and hardened in a short period of time to form a core. The foundry sand is generally injected into the cavity of the hot core box mold through the sand injection nozzle. [0003] In the existing electromechanical industry, the contact is one of the key components of the switching device. The main performance and life of the switching devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/22B22C15/24
CPCB22C9/02B22C9/22B22C15/24
Inventor 刘战辉牛伟峰杨风伟李向阳杨文峰王军现陈学超
Owner YUZHOU KUNLUN MOLD CO LTD
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