SU1763071A1 - Joint action die - Google Patents

Abstract

The invention relates to the processing of metals by pressure and die tooling and can be used in the manufacture of solid deep (with a ratio of height to diameter, close to unity) metal, packaging, in particular cans used in the food and processing industry. The aim of the invention is the expansion of technological capabilities by combining the operations of a direct two-pass stretching with punching of the bottom relief and shaping of the shoulder and improving the reliability of the stamp. The stamp contains the upper movable part of the plate 1 with a die 2 fixed on it with two working edges of the outer punching and the inner rounded out

Description

The invention relates to the processing of metals by pressure and die tooling and can be used in the manufacture of solid deep (with a ratio of height to diameter, close to unity) metal containers, in particular cans used in the food and processing industry.

A well-known stamp is a combined action for cutting and double-stretching, which in the movable upper part is fixed in the upper plate a punch-matrix, covering its puller, a bottom relief punch, which also serves as a pusher. In the lower part of the punch there are cut-out matrix, pressure ring, movable exhaust punch of the first transition and stationary exhaust punch of the second transition.

This stamp does not allow stamping of hollow parts with a collar and a cut flange.

Closest to the invention according to the technical essence and the achieved result is a combined action stamp containing a punch-matrix fixed in the upper plate with a ring matrix insert of the second extract and an ejector. A telescopic punch of the first and second stretching, a die-cutting matrix, a clamp and a trimmed punch mounted under the second extraction punch are placed in the bottom plate. In this case, the punch of the second stretch is made composite. It consists of a vertically movable part and a fixed support part.

This stamp does not allow to obtain parts with a collar and a trimmed flange.

The purpose of the invention is the expansion of technological capabilities due to the combination of direct two-pass stretching operations with punching of the bottom relief and shaping of the shoulder and increasing the reliability of the punch.

The goal is achieved by those. that the stamp of the combined action, which in the upper part contains a movable plate, will fix another punch-matrix, covering its spring-loaded puller, located inside the punch-matrix of the second transition matrix,

the lower part is a fixed plate with a cutting matrix fixed on it, an exhaust punch of the second junction and a trim punch and movable pressure ring supported on the pushers and

an inset punch of the first transition, provided with a flanging and trimming matrix and a stretching matrix of the second transition, a bottom relief matrix, an crimping punch fixed between the

with a second transition punch and a trim punch, while the crimping matrix is spring-loaded axially relative to the cutting matrix; the cutting punch is made in the form of a ring with double-pointed external cutting edges; the exhaust punch of the first transition is equipped with external and internal collars to limit the stroke, respectively

The clamping ring and the bottom end of the cut punch, and in the punch-matrix and in the exhaust punch of the second junction, holes are made for supplying compressed air.

FIG. Figure 1 shows a longitudinal section of the stamp, to the right of the axis of symmetry, in a closed state, to the left, in the open state; in fig. 2 - product manufactured by the stamp,

The stamp contains in the upper movable part of the plate 1 with a punch-matrix 2 fixed on it with two working edges: outer cutting and inner

a rounded exhaust edge of the first transition, covering the punch — a puller matrix 3 with springs 4. Inside the punch matrix 2 there are: a dead matrix 5, an exhaust matrix 6 of the second transition, a matrix 7 of the relief-sheet 8 with belleville springs 9 located in it. An ejector rod 10 with a spring 11, a nut 12 and a lock nut 13 is screwed into the relief matrix. In the lower part of the punch there is a fixed plate 14 with a cutting die 16 fixed on the base 15 and a clamping ring 18 fixed to the pushers 17 Sleep 19 as a two-edged ring with the outer edges, the drawing punch 20 and the second transfer plungers 21 supported on the drawing punch 22 of the first transition.

In the upper part of the punch between the trimming matrix 5 and the exhaust matrix 6 of the second transition, there is a crimping matrix 23, which is affected by the springs 9.

 s., In the lower part of the punch between the trimmer punch 19 and the exhaust punch 221 of the second transition, there is a selection punch 24.

The stamp works as follows.

A tape or strip of material being forged (not shown) is fed to the lower part of the stamp. When lowering the upper part of the stamp, the material being forged is pressed by the puller 3 to the cutting die 16. The die-die 2 cuts the workpiece along the internal diameter of the cutting die. Upon further downward movement, the workpiece is clamped between the die-matrix 2 and the pressure ring 18 supported by the tappets 17 on the outer supporting disk of the telescopic pneumatic buffer (not shown). The material of the workpiece passes into the gap between the punch-matrix 2 and the exhaust punch 22 of the first transition. In this case, the exhaust punch of the first transition remains in the upper position due to the force transmitted by the inner disk of the telescopic pneumatic buffer (not shown) by means of the pushers 21. When the depth of the first transition is reached, the pressure ring 18 abuts the first transition punch 22, squeezes it down. The second transition is stretched. The material of the workpiece from the gap between the punch-die 2 and the exhaust punch 22 of the first transition enters the gap between the exhaust matrix 6 of the second transition and the exhaust punch 20 of the second transition, while the punch-matrix 2 surrounds the matrix

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5 and the first transition jig 22, the workpiece is clamped. At the end of the stroke of the press ram, the relief matrix 7 and the second transition punch 20 of the second transition are molded to the bottom relief 25, and the crimping matrix 23 and the grating punch 24 are drawn off the bead 26. The rim of the die 5 and the trimmed punch 19 are made t trim the flange of the product 27 (figure 2).

When the punch is opened, a portion of compressed air is fed into the exhaust punch 20 to remove the stamped can from the bottom of the punch. The start time and duration of the compressed air supply is controlled by a command sensor (not shown).

The bank is removed from the upper part of the punch by mechanical ejection by extending the relief matrix 7. A portion of compressed air is fed to the die 2 to remove the skirt ring from the top of the die. The start time and duration of the compressed air supply is controlled by a command sensor.

The extraction punch of the first transition rests with its internal protrusion into the trimming punch, which prevents it from moving upward due to the inertial forces when the punch is opened.

The proposed stamp makes it possible to produce in a single stroke of the press slide a simple action deep cans (including canning ones) with a ratio of height to diameter, close to one, with a collar and flange-cut by direct de-transferring. This makes it possible to replace prefabricated banks with solid ones.

This increases the hygiene and reliability of the container, improves working conditions, eliminates the possibility of harmful substances (lead, tin, antimony, harmful substances from phloxes, fluxes and oxides) getting into products, reduces capital and energy costs.

Claims (2)

1. Combined action punch, containing in the upper part a movable plate, a punch-matrix fixed on it, a spring-loaded puller enveloping it, an extension matrix of the second transition located inside the punch-matrix, and a fixed plate with a cutting matrix fixed on it, a second transitional punch and a trimming punch and movable pressure ring and an exhaust punch of the first transition supported on the pushers, means for removing the stamped part which is very difficult because Technological capabilities due to the combination of direct two-pass stretching operations with punching of the bottom relief and shaping of the shoulder, it is equipped with a crimping and edging matrix located between the punch-matrix and the exhaust matrix of the second transition, a bottom relief matrix, a grating punch fixed between the with a second transition punch and a cutting punch, while the crimping matrix is spring-loaded in the axial direction relative to the cutting matrix, the cutting punch is made in 0 five In the form of a ring with double-edged outer cutting edges, the exhaust punch of the first junction is provided with outer and inner flanges for limiting the stroke, which interact respectively with the clamping ring and the lower end of the trimming punch. 2. Stamp pop. 1, characterized in that. that, in order to increase reliability, the tool for removing the stamped part is made in the form of compressed air supply holes made in the die-punch and the exhaust plug of the second transition. but 25 g 26 Fig 2