SU969424A1 - Apparatus for making box-less casting molds - Google Patents

Description

(S) DEVICE FOR THE MANUFACTURE OF RELIABLE

CASTING FORMS

one

FIELD OF THE INVENTION The invention relates to foundry, in particular, to device for flaskless molding.

The closest to the technical essence and the achieved effect to the proposed is a flashless molding machine containing a multi-position-turntable with a drive of intermittent movement, mounted on the base and carrying a comp., Set of fixtures for molds mounted on each position of the turntable , means for feeding the molding mixture located above one of the positions, 5 rotary table, press unit, ejector mold half-form and receiving table, located at a different position of the rotary th section opposite each other on both sides of the 20 th ukreplenno- thereon means for fastening the molds 1.

However, the known technical solution does not provide uniform

distributing the mixture along the contour of the pressing plates, which leads to an uneven density of the molds.

The purpose of the invention is to improve the quality of the produced half-molds.

Claims (1)

The goal is achieved by the fact that, in a known device for the manufacture of alloy-free casting molds, comprising a multi-position rotary table with an intermittent motion drive, mounted on the base and carrying a set of fixtures for attaching the molds mounted on each position of the rotary table, means for feeding the molding sand, located on one of the positions of the rotary table, press unit, ejector half-form and the receiving table, located on the OTHER position of the rotary table opposite each other the other on both sides of the fixture for fixing the molds mounted on it, the multi-position pivot stbl is installed on the base at an angle of 5, and the press-. 1) Orms are positioned at an angle of 45 to the table, with the means for feeding the molding sand and the pressing unit located at a mold position parallel to the base19, and the half-mold ejector and receiving table are positioned at a mold that is perpendicular to to innovation. FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; on -fig. 3 - unit for fastening hydraulic cylinders in cross-arms; in fig. section bb in fig. 3, On frame 1 at an angle of 5, a table 2 is installed with a drive of intermittent motion (not shown), on which four molds 3 are installed circumferentially, for example, at an angle kS relative to the plane of the table, which provides the position; pressing upright position. the mold, and the ejection position - the horizontal position of the mold. The frame 4 is equipped with traverses 5 and 6. On the traverse 5 there is a lower pressing hydraulic cylinder 7 with a press plate 8 and a model 9. On. the cross bar 6 has an upper pressing hydraulic cylinder 10 with a pressure regulator 11 and a model 12. The mixture is charged into the mold 3 by the dosing unit 13. Hydrocylin 1 with a pusher 15 is installed in the ejection position of the molds from the mold. For assembly and pouring of the molds guides 16. Each form of stack 17 is poured with metal from a ladle 18. Hydraulic cylinders 7 and 10 are attached to cross-pieces 5 and 6 I with flanges 19 and 2.0. The device works as follows. At the pressing position, after supplying the pressing plate 8 to the mold 3 to form the bottom, the dispenser 13 pours the mixture into it. Then the upper and lower pressing plates 11 and 8 press the mixture. After the extrusion of the plate 8 and 11 is completed, it is retracted to the starting position, the table 2 is folded one step, and the free mold is applied to the position of the press. In parallel with the half-mold manufacturing cycle, in the opposite position of the table, the pusher 15 pushes the mold out of the mold and delivers it. pressing it along the guides 16 until it touches the stack 17, pushes the entire stack of forms one step and then returns to its original position. At the next turn of the table. 2, the cycle is repeated one step. The device will improve the quality of the forms due to the vertical pressing and free filling of the mixture in. Claims An apparatus for making non-flask casting molds comprising a multi-position rotary table with intermittent motion mounted on a base and carrying a set of fixtures for attaching molds mounted at each position of the rotary table, means for feeding the molding mixture over one of the positions of the rotary table, press unit, ejector half-form and receiving table, located at a different position of the turntable opposite each other doug. from both sides of the fortified on it mold fixing devices, differing in that, in order to improve the quality of the molds being made, the multi-position rotary table is mounted on the base at an angle) to it, and the molds are angled to the table, the means for feeding the molding sand and pressing the assembly is located at the mold position parallel to the base, and the half-mold ejector and the receiving table are located at the mold position perpendicular to the base. Sources of information taken into account in examination I 1. USSR author's certificate. No. it77780, cl. B22 C 11/10, 1972. 18 17 i6 B-6