Amf sand box polyurethane lining mold and its manufacturing process

Abstract

The invention relates to a polyurethane lining die of an AMF sand box. The polyurethane lining die of the AMF sand box comprises a sand box, a die base, a long-side baffle plate, a short-side baffle plate, a sand shooter hole die and an exhaust hole die, wherein the sand box is fixedly mounted at the upper end of the die base; the long-side baffle plate and the short-side baffle plate are symmetrically and fixedly mounted in a cavity defined by the sand box; the sand shooter hole die is mounted on the long-side baffle plate; a plurality of hoisting handles convenient for hoisting and moving are symmetrically manufactured around the die base; concave grooves for positioning and embedding the baffle plates are formed in the middle part of the die base, so as to ensure accurate mounting positions of the long-side baffle plate and the short-side baffle plate; a straight positioning iron block and an L-shaped positioning iron block are respectively arranged on the surface of the die base, outside the concave grooves. According to the polyurethane lining die of the AMF sand box, the polyurethane lining is integrally poured, so that the finished product of polyurethane has an accurate dimension, and the problem of different shrinking percentage of polyurethane holes in different positions can be solved; the polyurethane lining is adhered by a chemical manner, thus improving the adhering force between the polyurethane and a metal sand box.

Description

technical field

[0001] The invention belongs to the field of machinery, in particular to a polyurethane-lined mold for an AMF sandbox and a manufacturing process. Background technique

[0002] Common AMF sand box linings are generally made of molded polyurethane sheets pasted on the inner surface of the metal sand box. The blocks are spliced ​​together and it is difficult to form a good splicing effect.

[0003] After searching, no disclosed technology close to this patent is found. Contents of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a mold for the polyurethane lining of an AMF sandbox and its use steps, to bond the polyurethane lining with a chemical method, to improve the bonding force between the polyurethane and the metal flask, and to utilize the internal The lined vent hole mold solves the problem of different shrinkage rates of polyurethane holes in different positions.

[0005] The ...

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