一种砂型自定位模板

Self-locating die plate of sand mold

Abstract

本发明属于砂型铸造领域,涉及砂型铸造模板,尤其涉及一种砂型自定位模板,包括上模板以及设置在上模板下部的下模板,所述上模板的中部设置有第一梯形凹槽,所述下模板的中部设置有第二梯形凹槽,所述第一梯形凹槽的大小和结构与第二梯形凹槽相同,所述第一梯形凹槽的中部设置有向上凸的上型囊,所述第二梯形凹槽的中部设置有向下凹并与上型囊相配合的下型囊,所述梯形凹槽为等腰梯形,所述等腰梯形的定位斜度为5°~40°,本发明具有结构简单、定位准确、实用性强、易于制作等特点,将平面分型改造为曲面分型后增加了吃砂量的长度,减少了炮火现象。
The invention belongs to the field of sand mold casting, and relates to a sand mold casting die plate, in particular to a self-locating die plate of a sand mold. The self-locating die plate of the sand mold comprises an upper die plate body and a lower die plate body arranged on the lower portion of the upper die plate body. First trapezoidal grooves are formed in the middle of the upper die plate body. Second trapezoidal grooves are formed in the middle of the lower die plate body. The first trapezoidal grooves are the same as the second trapezoidal grooves in size and structure. Upper mold bags protruding upwards are arranged in the middles of the first trapezoidal grooves. Lower mold bags which are recessed downwards and matched with the upper mold bags are arranged in the middles of the second trapezoidal grooves. Each trapezoidal groove is an isosceles trapezoid, and the locating inclination angle of each isosceles trapezoid ranges from 5 degrees to 40 degrees. The self-locating die plate of the sand mold has the beneficial effects of being simple in structure, precise in location, high in practicability, easy to manufacture and the like, the length of the mold thickness is increased after flat parting is transformed into curved surface parting, and the phenomenon of bleeding from parting is reduced.

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