SU1142210A1 - Press tool for making articles with hollows - Google Patents

Abstract

STAMP FOR INJECTION OF EQUIPMENT WITH CAVITIES, containing the upper plate with a clamp, lower tray with working tools made in the form of a punch and annular, dies for crimping the workpiece, and rolling elements placed on the lower plate with the possibility of interaction with one of the working tools, t l and h aa y and with the fact that, in order to expand the range of products obtained, to improve their quality and reliability of the stamp, it is equipped with elastic supports under the rolling body, the latter are radially located under the matrix with interaction with it, the matrix is installed, with the possibility of displacement perpendicular to the direction of movement of the upper plate, and the punch, is installed with the possibility of axial -: movement. (L

Description

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The invention relates to the processing of metals by pressure, in particular to die tooling used in the manufacture of shaping tools with internal cavities for 5 processes of pressing, drawing, punching, etc.

A known stamp for extruding products with cavities, containing an upper clamp with a clamp, a lower plate O with working tools made in the form of a punch and an annular matrix for crimping the workpiece, as well as rolling bodies placed on the lower sp-1t with the possibility of 15 interaction with one of the til working tools. The disadvantages of the known stamp are the limited product range, low quality and low reliability of the stamp operation.

The purpose of the invention is to expand the range of products obtained, improving their quality and reliability of stamp work.

The goal is achieved by the fact that a die for pressing products with cavities containing an upper plate with a pressure, a lower plate with working tools made in the form of a punch and an annular matrix for crimping the workpiece, as well as a rolling body placed on the lower plate with the possibility of interaction with one of the working tools, 35 is provided with elastic supports under the rolling elements, the latter are radially disposed under the matrix with the possibility of interaction with it, the matrix is installed with the possibility of displacement of the perpendicularly ION movable top plate, and a punch is mounted for axial movement. Moving the matrix perpendicular to the longitudinal axis of the punch instead of 45 similar to the punch of the prototype allows stamping blanks with a cavity displaced relative to the outer surface with a more rigid direction of the punch.

FIG. 1 shows a stamp scheme; and FIG. 2 is a section A-A in FIG. 1. The stamp (Fig. 1) consists of the tops of the plate 1 with the clamp 55 installed in it 2. On the base 3 a bottom plate 4 is installed, provided with radial grooves in which are supported on the elastic elements 5. 6, having grooves with rolling elements in them in the form of balls 7 (FIG. 2). On the ends of the supports 6 fixed krish1 8, limiting the movement of the balls 7 in the grooves. On balls set matrix 9.

In the bottom plate 4, on the elastic element 10, a puller 11 is mounted, on which a punch 13 is mounted through the intermediate sleeve 12. At the base of the punch 13 there are holes for the pushers 14 mounted on the support 15. The die has an ejector 16.

The stamp works as follows.

The workpiece 17 is set in the matrix 9, placing the punch 13 in its inner half. During the working stroke of the press, the slide together with the plate 1 and the clamp 2 moves downwards. The workpiece is pressed into the conical hole of the matrix and the formation of the shaping cavity due to the radial reduction of the workpiece on the punch 13. At the beginning of the radial reduction, with the growth of the vertical component of the deforming force, the matrix 9 moves downward, squeezing the elastic elements 5 through the ball support 6 support plane of the bottom plate. This eliminates the possibility of indentation of the balls by axial forces due to compression of the inclined portions of the lead-in part. When pressed, the punch 13 moves along with the workpiece, compressing the elastic element 10 through the intermediate sleeve 12 and the puller 11, creating a counter-pressure preventing the development of tensile stresses at the end of the workpiece.

When the slide is upward, the load on the elastic element 10 is removed, which, uncoupling, pushes the product out of the conical hole of the matrix 9. The product is removed from the punch 13 using the lower ejector 16, the pushers 14 and the support 15.

The movement of the matrix 9 mounted on the balls 7 perpendicular to the punch axial axis makes it possible to stamp blanks with a cavity relative to the outer surface and contributes to increasing the resistance of the punch and reducing the labor intensity of manufacturing the products. Tilt angle outdoor

the lateral surface of the matrix, the conicity of which is inverse to the conicity of the inlet part, is 5. The cross-sectional area of the cavity is 1080 mm. The largest outer diameter is 92 mm. Matrix height 26 mm. The resulting products have a fully molded cavity. Metrics do not require additional mechanical

11422104

processing the molding cavity and the outer side surface.

Compared with the base object, 5 as which the prototype is taken, the invention allows to obtain products of an expanded nomenclature with their quality and increased reliability of the stamp.

Claims (1)

A STAMP FOR EXTRACTING PRODUCTS WITH CAVITIES, containing a top plate with a 'clamp, a bottom plate with working tools made in the form of a punch and an annular die for crimping a workpiece, as well as a rolling body, placed on the bottom plate with the possibility of interaction with one of the working tools, characterized in that, in order to expand the range of products obtained, improve their quality and reliability of the stamp, it is equipped with elastic supports for rolling elements, the latter are radially located under the matrix with the possibility of inter action with it, the matrix ustanovlena- displaceable perpendicularly to the direction movement of the upper plyty, and the punch is mounted for axial movement. SU „1142210 1 142210