Matrix for moulding

FIELD: mining engineering.

SUBSTANCE: matrix for moulding contains contains casing, which, according to the invention, is implemented as divided. Divided casing contains external and internal parts, located co-axial with ability of free motion in axial direction relative to each other and forming annular slot. Two parts of casing are connected to each other by screws, herewith between heads of screws and external casing there are installed springs, which overlaps annular slot at absence of solution pressure in feeding system of binding additive.

EFFECT: simplification of moulding of as damp, as and dry materials, ensured by friction reduction.

2 cl, 1 dwg

 

The invention relates to the molding of plastic materials and can be used in forming products from dry particulate materials.

Known matrix for briquetting particulate materials at a low humidity of 10-15%, consisting of the brackets and installed them in the guides and the side bars forming a matrix channel, in which there is a pressing, also known mouthpieces for obtaining a molded product by extrusion of plastic materials, which is a tube of cylindrical or other cross section, is fixed to the output window, screw press, through which is forced moldable mass (Reference peat. M. Nedra, 1982, C-512, C).

A disadvantage of the known solutions is the inability to introduce additives in the molding process of the material, resulting in higher energy costs for briquetting and lower quality products.

The closest in technical essence and the achieved effect is the mouthpiece (matrix) for forming peat (SU # 1305351, CL ES/00, C10F 7/04, 1987) containing the nozzle and chamber, the wall of which is made holes. In the input part of the mouthpiece is placed an elastic insert that is installed with the possibility of overlapping holes in the wall of the chamber. The inner diameter of the elastic insert is equal to the internal di the meter head. This device allows you to enter the additive on the surface of the moldable material into the molding process.

The disadvantage of the proposed design is that you cannot use it for briquetting materials low humidity due to high back pressure arising in the mouthpiece, and the lock ring groove with an elastic insert that prevents the flow of the additive on the surface of the mouthpiece and reduces the quality of products.

The objective of the invention is to improve the quality of molded products.

The technical result - the relief forming both wet and dry materials by reducing friction.

The task and delivered the technical result is achieved by the fact that in the matrix for molding attached to the press and comprising a housing, according to the invention the casing is made detachable and includes exterior and interior parts that are placed coaxially and mounted with a possibility of free movement in the axial direction relative to each other, while between the outer and inner parts formed by the annular gap, the two housing parts are connected by screws, and between the heads of the screws and the outer casing of the springs that overlap the annular gap in the absence of pressure solution in the supply system binder additives. Matrix to the press p is ukreplyayut using transition sleeve.

The invention is illustrated in the drawing, which shows a matrix for molding in the section.

The housing includes an outer 1 and inner 2 are coaxially relative to each other and with the possibility of free movement in the axial direction relative to each other due to the loose fit. Between the outer 1 and inner 2 parts of the body formed by the annular gap 3. The two housing parts 1 and 2 are connected by screws 4, wherein between the heads of the screws 4 and the outer 1 housing the springs 5, which overlap the annular gap 3 in the absence of pressure solution in the supply system binder additives. The matrix is attached to the press by means of the transition sleeve 6, which is connected with the inner casing 2 by means of threaded connections.

Matrix for molding works as follows. Supply system binder (not shown) under pressure delivers it via pipeline through the annular gap 3 between the housings 1 and 2. Next, a binder is fed to the contact zone of compressible material and the inner surface of the housing 2, providing, thus, reducing friction at the boundary of materials due to the effect of lubricant binder. When the pressure in the supply system connecting the spring 6 press the outer body 1 to the inner casing 2 and overlaps the annular gap 3 between the buildings. Construction the e decision matrix for molding allows the molding and extrusion of various bulk (including low humidity, for example, sawdust) and viscoplastic materials with simultaneous supply of various additives on the surface of the matrix, while improving the quality of the finished product.

Currently developed and tested a prototype of a matrix for molding, preparing mass production.

1. Matrix for molding attached to the press and comprising a housing, wherein the housing of the matrix is made detachable and includes exterior and interior parts that are placed coaxially and mounted with a possibility of free movement in the axial direction relative to each other, while between the outer and inner parts formed by the annular gap, the two housing parts are connected by screws, and between the heads of the screws and the outer casing of the springs that overlap the annular gap in the absence of pressure solution in the supply system binder additives.

2. The matrix according to claim 1, characterized in that the matrix attached to the press by means of the transition sleeve.



 

Same patents:

FIELD: mining.

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EFFECT: higher quality.

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FIELD: drying equipment engineering.

SUBSTANCE: device has frame with frontal and backward rotary support rollers, sole with groove on surface and heaters placed therein. Device is provided with mechanism for vertical displacement of soil, placed between ends of frame and sole, on running surface of rollers ball-like shelves are placed in staggered order. Vertical displacement mechanism is made of guide with post, held on the middle of each frame end, and of screw positioned on guide aperture, having two nuts, on sole surface groove is made along shape of common sine curve in form of even size portions serially placed one after the other along and symmetrically to longitudinal axis of sole. One nut is set on screw above said guide and made in form of hub and wheel placed below it, rigidly interconnected by rods, and other nut is set on screw below the guide. Size of ball-like shelves, length and width of sole are determined from mathematical formulae.

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FIELD: mining industry.

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Matrix for moulding // 2379516

FIELD: mining engineering.

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