SU1215839A1 - Mould for casting by investment patterns - Google Patents

Description

The invention relates to a foundry, in particular, to mold devices, and can be used to make products of various materials in manufacturing and instrument making.

The purpose of the invention is to expand the operational capabilities and increase reliability.

FIG. Figure 1 shows the mold at the time of pressing; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 - the same, the moment of extraction of the product; in fig. 5 shows section A-A in FIG. 1, the moment of removal of products; in fig. 6 is the same as the moment of extraction of the telescopic sliders and rods.

The mold contains the main movable and fixed matrix 1 and 2, an additional movable matrix. 3 with a sprue bushing 4 and fitted with limiters 5 and inclined wedges 6, centrifugal rods and 7, while the movable matrix 1 is spring-loaded with springs 8 relative to the matrix 3 and is equipped with lugs 9 of the locking mechanism, centering the bushing 10, and the fixed atrix 2 is equipped with sleeve 11 and has grooves 12 with left and right side semi-matrices 13 and 14 moving along them, fitted with rigid frames 15, interacting with protrusions 9 of matrix 1, and sliders 16 with guide plates. The press form also contains a support plate 17, an ejector plate 18 with tollers 19 and columns 20.

The mold is working in the following way.

Starting position - the form is closed (Fig. 1-3). The movable additional matrix 3 carrying the sprue bush 4, the stops 5 and the inclined wedge 6 compresses the springs 8 and rests on the matrix 1, the stops 5 push the side semi-matrices 13 and 14 back to their original position and prevent them from coming in contact with them, and the wedges 6 interact with the sliders 16, while the frames 15, mounted on the semi-matrixes 13 and 14, are in the engaged position with the protrusion 9 provided on the matrix 1,

the rod 7 centers the dies 1-3., and the pusher plate 18 with the pushers 19 is in the initial position.

- After filling the mold with the weight 21, the movable part of the automaton leaves and the mold begins to open successively at the beginning of the BB connector (Fig. 3 and 4). Under the action of the inclined wedges 6, the side slides 16 are removed by the value L, and the spring-loaded matrix 1 and the semi-matrix 13 and 14 are in the closed initial position (Fig. 6), the stops 5, moving together with the matrix 3, release the semi-matrix 13 and 14, inclined wedge 6, choosing the stroke L of the crawlers 16, contact with the semi-matrians 13 and 14 and move them

in the slots 12 of the fixed matrix 2 (Fig. 2 and 3). The frames 15 slide along the protrusions 9 and continue to hold the matrix 1 in a closed position, then get out of the engagement, releasing

matrices 1 and 2, which are jointly moved open at connector AA (Figs. 4 and 5). Under the action of the efforts of the automatic machine, the pusher plate 18 with the pusher 19 moves and pushes the casting out of the mass 21 from the mold.

When the mold is closed, all operations are reversed. The presence in the mold of a spring-loaded matrix, additional semi-matrix, moving along the grooves of the fixed matrix and equipped with side sliders, a locking mechanism that reliably holds the shape in close position at the moment of pressing and extraction of the sliders, allows for the gradual extraction of shape-forming elements, allows to expand the range

cast in molds, to obtain particularly complex products that require additional separation and eliminates the deformation of the products.

Tests have shown that the mold device works reliably and ensures the manufacture of quality products, allows you to remove the molding elements and thereby eliminate their deformation.

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Claims (1)

PRESS-FORM FOR CASTING ON CASTED MODELS, containing the main movable and fixed matrices with lateral sliders, an additional movable matrix with gating bush and inclined wedges that can interact with lateral sliders, characterized in that, in order to expand operational capabilities and increase the reliability of operation , the mold is equipped with side semi-matrices, each of which contains sliders with guide plates and locking mechanisms, made in the form of frames mounted on lateral half-matrices, and protrusions made on the main movable matrix for interacting with the frames, while the additional movable matrix has its movement limiters and centering rods fixed; moreover, q the additional matrix is spring-loaded relative to the main movable matrix, and the grooves for interaction are made in the main fixed matrix with side semi-matrices. SU w, 1215839