SU1243863A1 - Detachable sectionated die for shaping bellows - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to a tooling for the hydraulic molding of corrugated articles, for example bellows, from tubular blanks.

The purpose of the invention is to reduce the laboriousness of changeover.

Fig. 1 shows the forming part of the matrix, side view; FIG. 2 is a section A-A in FIG. 1, FIG. 3 — section B — B in FIG ,, 1 (fastening elements, section), FIG. 4 — the fastening element in a free state, FIG. 3 — a removal circuit and installation of a forming insert; Fig. 6 is a view of a matrix plate without an insert and fastening elements.

The matrix consists of plates 1 and 2 on the annular protrusion of which the replaceable forming inserts 3 are mounted, fixed with fastening elements mounted in the recesses 4 and 5 of the plates 1 and 2 of the matrix, made in the form of brackets 6 with spring legs. Staples legs fixed in the grooves 4 and 5 of the plates 1 and 2, and pocks placed in the longitudinal grooves 7 and 8 plates and the slots 9 and 10 of the liners. The total depth of the grooves 8 and 10 corresponds to the thickness of the flange of the bracket 6, and the depth of the groove 7 is greater than the depth of the groove 8, but less than the thickness of the flange of the bracket 6.

To replace the liner 3, you need to unscrew the matrix, slide the top .2

6 upwards through groove 7 and notches 4 until it is completely drowned, take out the forming insert 3 and insert a new one. After this, the bracket 6 partially extend

from the groove 7 to the groove 9 of the forming insert 3, which is held in this position by its weight and the friction force of the spring legs of the bracket against the wall of the recess 4. The indicated attachment of the forming inserts can be used in sectional tooling

any design.

  ,

Testing the prototype matrntsy of the proposed design shows that it takes 5-10 s to replace the liner in it, which reduces the laboriousness of changeover by 3-6 times .. When using the proposed

matrix in the national economic and economic effect can be obtained by reducing the cost of operation and repair of forming equipment, speed up machine readjustment (i.e.

reduction of their downtime), as well as by switching to re-tooling-equipment instead of completely replaced at plate thicknesses of 2-4 mm (now the matrices are mostly solid or with glued-in liners, the replacement of which takes several hours). The proposed design is particularly effective in forming molds.

agility, where the matrices are combined into blocks by the mechanisms of their arrangement in a step.

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Fig.Z

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FIG. five

Fig.6

Editor S. Lisin

Compiled by L.Tkachenko Tehred V.Kadar

Order 3744/12 Circulation 783 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proof-reader I.Erdeyi

Claims (1)

'DISTRIBUTABLE SECTIONAL MATRI- CA for forming bellows, comprising interchangeable liners forming a working point, mounted by means of an annular groove on the annular protrusion of the corresponding plate and fixed by fastening elements, characterized in that, in order to reduce the complexity of the changeover, the upper and lower longitudinal grooves are made on the outer surface of each liner, and on the plate - grooves that coincide in direction with the grooves of the inserts, and the recesses associated with them, the fastening elements of each insert made in the form of lower and upper brackets spring tabs, shelves placed in the slots of the plate and the liner, and the tabs in the recesses of the plate, the upper plate formed groove depth greater than the depth of the lower groove by an amount not less than the thickness of the shelf bracket. SU „„ 1243863