SU1503973A1 - Mould for manufacturing investment patterns - Google Patents

Abstract

The invention relates to foundry. The purpose of the invention is to expand the technological capabilities of manufacturing an annular collector of various heights with a stepless change in the length of the central rod. At the end of the pressing cycle, one model name replaces the half-matrix 5 and 7, the stops 11 and the ejector 13 with the central sleeve 14, and the sprue sleeve 4. With a key, the threaded sleeve is screwed in several turns, releasing the shank fixing. Then, the forming core is installed up to the stop with the end face of the sprue bushing 4, and then the shank is fixed with the threaded bushing. The economic efficiency of the invention is to reduce the costs of manufacturing carbon steel rods. 4 il.

Description

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The invention relates to foundry, in particular, to the production of casting molds for the manufacture of models produced.

The purpose of the invention is the expansion of technological capabilities for the manufacture of an annular collector of various heights by continuously changing the length of the central rod.

FIG. 1 shows the proposed mold; in fig. 2 - shank forming the rod; in fig. 3 - threaded sleeve; in fig. 4 is a view A of FIG. 3

The mold for the manufacture of molded models consists of two main parts: mobile and stationary.

The movable part of the mold contains a movable holder 1 fixed to the movable support plate 2, in which the centering sleeve 3 and the sprue sleeve 4 are located. In the movable holder 1, a semi-matrix 5 is replaced.

The fixed part of the press-FORM contains a fixed holder 6 with a replaceable half-matrix 7, an intermediate

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holes 24 of the shank 21 of the forming rod 22.

The mold for the manufacture of produced models works as follows.

At the end of the pressing of one name of the melted models, the semi-matrix 5 and 7 are replaced in the mobile and fixed parts of the mold. However, depending on the height of the newly manufactured parts, changing the stroke of the ejector plates 12, replacing the stops 1 1 in the base plate 10, as well as the ejector 13 and the central sleeve 14. At the same time as replacing the half-matrix 5, the gating sleeve 4 is replaced.

After fixing in the mold for the manufacture of the produced models of replaceable elements through the opening 17 of the pressing plate 16 with a key inserted into the opening 24 of the threaded sleeve 20, the threaded sleeve

20 unscrewed a few turns, loosened the fixation of the shank

21 in the threaded hole 19. Then, the movable and chain-moving parts of the mold are closed between

the plate 8 and the supports 9 fixed to the non-ZO DU by themselves and the rotation of the key are inserted into the movable support plate 10. In the space between the intermediate space, 8, the supports 9 and the fixed support plate 10, resting on the stops 11, there is an ejector plate 12, with ejector pads 13 fixed in it and a central bushing 14, worn on the central core, which with its shoulder .1; 5 .-: is fixed to the fixed support plate 10 with a hole plate 16 with a hole 17. collet 15 and threaded center bore iem 19, which via the threaded bushing 20 having an external thread, is mounted shank 21, forming the shank rod 22. In figure 21 is satisfied, e.g., hexagonal recess 23.

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The threaded sleeve 20 has an internal multi-faceted (. For example, hexagonal) hole 24 or a round hole, but the slots 25 are cut at the end of the sleeve. The diameter of the circumscribed circle of the polyhedral hole 24 is larger than the diameter of the circumferential (hex) circumference

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into the shaped recess 23 of the shank 21, the forming core 22 is installed up to the bushing with the end face of the gate sleeve 4. The fixing of the position of the shank 21 in the threaded hole 19 is performed using the threaded sleeve 20 screwed into the threaded hole 19 until it stops at the shank 21.

A more accurate adjustment of the length of the central rod is carried out using a threaded bushing 20 having slots 25 at the end. and forming stitch 22, which allows to keep the latter from displacement. (rotation) during the final fixation of the shank 21 of the threaded sleeve 20.

The use of a stepless adjustment along the length of the central rod will allow: to reuse the same rod for the manufacture of different models produced with different heights.

eliminate fitting operations associated with multiple assembly and disassembly of the mold. In addition, the manufacture of a rod body made of contour steels and one standard rod size instead of the 62 standard sizes provided by the prototype will significantly reduce the consumption of expensive carbon steel.

F .o rmula from b. shade mold A mold for the manufacture of molded models, containing a slice g-face and a threaded bushing with a multi-faceted hole and / or slots

fixed and fixed base plates and sleeves with interchangeable semi-matrixes and a gating sleeve, pusher plate with pushers and central

at the end, and the pressure plate has a central hole for rotation of the sleeve and the forming rod.

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bushing, supports and a central rod fixed in a movable plate by a pressure plate differ from the fact that, in order to broaden the technological possibilities for manufacturing a ring collector of various heights by continuously changing the length of the central rod, the central rod is made in the form of a housing with a threaded . a central hole in which a shank of the forming rod is installed, having a groove in the form of a multiple end, and the pressing plate has a central hole for rotation of the sleeve and the forming rod.

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Claims (1)

Claim A mold for the manufacture of investment castings, containing movable ^ g fixed and base plates and clips with replaceable half-matrixes and a sprue sleeve, an ejector plate with pushers and a central 1503973 ⁶ bushings, supports and a central rod fixed in a movable plate by a pressure plate, characterized in that, in order to expand the technological capabilities for manufacturing an annular manifold of various heights by continuously varying the length of the central rod, the central rod is made in the form of a case with a threaded . a Central hole in which the shank of the forming rod is installed, having a recess in the form of a polyhedron and a threaded sleeve with a polyhedral hole and (or) splines at the end, and the pressure plate has a central hole for rotation of the sleeve and the forming rod. gh 15 10 25 18 21 7 ^^ /////// ^ //// 7 ^ ^ / уу / У /?? ///// '////////// //// ^ Physical type A FIG. H