Hand-molding pattern drawing machine

Abstract

The invention discloses a hand-molding pattern drawing machine. The hand-molding pattern drawing machine comprises supports, a cylinder, a piston, a pattern drawing bracket, a hanging hook, a guide column and a calibrating bottom plate, wherein the outer wall of the cylinder is fixed on the supports; an oil outlet connector and an oil inlet connector are formed in the upper part and the lower part of the side wall of the cylinder, respectively; the piston is arranged in the cylinder and is of an inverted T shape; the lower end of the piston is hermetically matched with the inner wall of the cylinder; the lower end of the piston slides between the oil inlet connector and the oil outlet connector; a bulge is formed on the outer wall of the cylinder; a guide hole is formed in the bulge; a cylinder cover hermetically covers an upper opening of the cylinder; the upper end of the piston slidably penetrates through the cylinder cover; the outer end of the piston is fixedly connected with the pattern drawing bracket; the pattern drawing bracket is positioned above the cylinder cover and is hinged to the hanging hook; a guiding hole is further formed in the pattern drawing bracket; the guiding hole and the guide hole in the bulge of the cylinder are positioned in the same vertical straight line; the guide column slidably stretches into the guiding hole; the lower end of the guide column is connected with the calibrating bottom plate. According to the hand-molding pattern drawing machine, the hoisting force of a pattern is perpendicular to a pattern drawing mechanism of a parting surface, and the pattern can move in the direction perpendicular to the parting surface.

Description

Technical field [0001] The invention belongs to the technical field of foundry equipment manufacturing, and specifically relates to a manual casting mold drawing mechanism, which can ensure that the pattern is smoothly moved and the moving direction is perpendicular to the mold parting surface when the pattern is lifted after the molding sand is hardened. Background technique [0002] Manual ordinary modeling is currently the most widely used method of cavity making in casting production. The process operation first makes the casting pattern. When modeling (see figure 1 ), place the pattern 2'on the moulding plate 4', and put the moulding sand 3'in the moulding box 1'after putting on the moulding box 1', pound the moulding sand, and the moulding sand will stick after chemical or physical changes in the moulding box Form a whole, and then turn the box and mold out (see figure 2 ), forming a sand mold, and the process operations are as figure 1 , 2 Shown. [0003] See figure 2 The ...

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