SU1660805A1 - Apparatus for stamping articles from sheet materials - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used to stamp parts from sheet material. The purpose of the invention is to increase the reliability of work and the accuracy of feeding by lifting the material above the matrix mirror during feeding. The device comprises a movable plate with punches and a fixed plate, carrying a matrix with a puller, a material feed mechanism, a guide and a mechanism for step-by-step material movement located behind the matrix during the material feed. The stepping mechanism includes a double-arm lever, a pusher mounted on a movable plate with the ability to interact with one of the ends of the two-armed lever. At the other end of the two shoulders lever, the push dog is hinged. The guide is hinged at one end on the fixed plate with the possibility of rotation in the vertical plane and is equipped with a turning mechanism. The rotation mechanism includes a shaft mounted on the bottom plate and carrying a roller bar and a lever, a pulling lever pivotally connected to the lever, stops attached to the pulling lever, a restricting bar pivotally attached to the roller, pins mounted on a movable plate on both sides of the rail. Two shoulders lever pivotally attached to the puller. A tray for removing parts is movably mounted under the die, connected through a system of levers to the movable plate. 2 hp ff, 4 ill.

Description

The invention relates to the processing of metals by pressure and can be used to stamp parts from sheet material.

The aim of the invention is to improve the reliability of operation and accuracy of the material supply by lifting the material above the matrix mirror during feeding.

FIG. 1 shows a device for stamping sheet material parts; in fig. 2 shows section A-A in FIG. one; in fig

3 is a view B in FIG. 2; FIG. 4 is a view C in FIG. 2

The device comprises a press 1, a combined stamp including an upper movable plate 2 with a bending 3 and punching 4 punches fixed on the press slider, a lower fixed plate 5 mounted on the press foot 5 supporting matrix 6 with a stripper 7, and stops 8

The device also contains a sheet feeding mechanism with guides 9, consisting of about

00

about

cl

two parts connected by hinge loops 10.

On the top plate 2 mounted bracket 11, which is rigidly fixed to the copier 12 and pivotally installed limiter slats, made in the form of a dog 13, the turning radius of which is limited pins, made in the form of pins 14 and 15.

The device is equipped with levers made in the form of rockers 16, one ends of which are connected pivotally to pulling levers 17, and the other ends are rigidly connected to each other by a rod 18 pivotally mounted in supporting elements 19 mounted on the bottom plate. On the planes of the levers 17 facing the guides 9, stops are installed, made in the form of rollers 20, which are in contact with their rolling surfaces with the upper and lower surfaces of the guides 9.

At one of the ends of the rod 18, the bar 21 is fixed with the roller 22, installed with the possibility of interaction with the cam 12 and the dog 13.

The device is equipped with a stepping mechanism consisting of a feed dog made in the form of a pusher 23 pivotally connected to a two-arm lever made in the form of a pair of levers 24 rigidly fastened to the frame 25 pivotally mounted on the puller 7, and also a pusher made in the form a hook 26 interacting with the frame 25 and fixed on the inner surface of the knife 27 to shred the waste mounted on the press slide 1. The frame 25 is connected to the puller 7 by a return spring 28.

The device is also equipped with a part removal mechanism consisting of a tray 29 placed under the window of the die 6 with the possibility of reciprocating movement in a horizontal plane, and an additional system of levers consisting of a fork lever 30 whose fork is hingedly connected to one end of the shackle 31. The other end of the earring 31 is fixed on the roller 32 pivotally mounted in the openings of the side walls of the tray 29. The forked lever 30 is fixed on the roller 33 pivotally mounted in the openings of the pillars 34 mounted on the press table.

To the roller 33 is attached to the shank 35, pivotally connected with the upper plate 2. The device operates as follows.

When the punch is closed, bending is performed at one working position with simultaneous punching of holes by punch 3, and at the other - cutting of the finished part by punch 4. At that, strap 21 is in vertical position, dog 13 contacts to surface of roller 22 and lies on pin 15, and the working surface of the copier 12 is not in contact with the roller 22.

When the punch is opened, the punch 4, which has crashed into the sheet, lifts it over the stops 8 to the puller 7. Simultaneously, part of the guides 9 rises, turning in loops x 10, and interacting with the guide levers 17, lifting the ends of the rockers 16 and tilting the bar 21 in

5 side of the copier 12.

After the punch exits the sheet, the sheet is fed to the step up to the stops 8, then the die closes. In this part of the guides 9 is held in

The elevated position of the pawl 13 until the roller 22 begins to interact with the cam 12. During this time, the strip advances by the width of the web in the sheet departure. Thereafter, due to the effect of copier 12 on

5, the roller 22, the bar 21 returns to a vertical position, and the pawl 13, under the influence of the roller 22, deflects against the stop in the pin 14, the guides 9 are lowered. With fully open stamp

0 dog 13 does not interact with the roller 22 and lies on the pin 15, and the copier 12 is in contact with the roller 22. The bar 21 is in a vertical position.

Sheet ejection mechanism

5 works as follows.

When the stamp is closed, the sheet waste ejection mechanism is in the folded position, in which the free ends of the pusher 23 are placed in the hole between the jumpers in the sheet waste, the other ends of the pusher 23 pivotally connected to the ends of the levers 24 are retracted under the protrusion lip 7. Hook 26 located below the frame 25 at a distance equal to the distance from the lower edge of the punch 4 to the puller 7, which allows the step-by-step movement of the sheet to begin after the punch 4 exits from it.

0 When the punch is opened, the hook 26 rises to frame 25, picks it up and doesn’t go up. The pivotally connected ends of the pusher 23 and the levers 24 are withdrawn from under the protrusion of the puller 7 and move in the feed direction a step per step, the free ends of the pusher 23, in turn, abutting the jumper, also pull the sheet in the feed direction.

With the next working press in

0 during the process of closing the punch, part of the waste is cut off with a knife 27 and is removed from the press in

tara The sheet ejection mechanism is returned to the folded position by means of a return spring 28

The finished part removal mechanism works as follows.

When the stamp is closed, the tray 29 is retracted from the stamp, and a part of the tray 29 is placed under the window of the die 6. The cut part 36 through the window of the die 6 enters the tray 29.

When the punch is opened, the upper plate 2, lifting up, does not have upward, the shank 35, which, turning the roller 33 in the holes of the uprights 34, causes the fork lever 30 to move along an arc towards the punch and move the tray 29 in the horizontal plane by means of a hinge connected with him earrings 31. Thus, the item 36 is transferred to the next process operation.

Claims (3)

1. A device for stamping sheet material parts comprising a fixed plate, a carrier matrix with a stripper, a vertically movable plate, a carrier processing tools, a material feed mechanism, a material transfer guide mounted on a fixed plate in front of the matrix as the material is fed, and a mechanism for the step-by-step movement of the material, located behind the matrix in the course of the material supply and made in the form of at least one two-arm lever mounted with the possibility of orotype in a vertical plane parallel to the axis of the material feed, the pusher fixed on the movable plate with the possibility of interaction with one of the two-arm levers and the feed dog, hinge 2 3 but mounted with the possibility of rotation in a vertical plane, characterized in that, in order to increase reliability and accuracy of delivery by lifting the material above the matrix mirror during feeding, it is equipped with a mechanism for rotating the guide in a vertical plane parallel to the material feed axis, made in the form of a shaft, mounted on a fixed plate, at least one bar with a roller and one swinging lever fixed on the shaft, one heavy lever pivotally connected to the swinging lever, stops fixed pins on a sliding arm with the ability to interact with the guide of the limiting bar hinged on the movable plate with the ability to interact with the roller, pins fixed to the movable plate on both sides of the limiting plate with the ability to interact with it, and a wedge mounted on the movable plate with the ability to interact with the roller of the strip, with the guide pivotally fixed to the fixed plate with an end located on the side of the material supply. 2. Device pop 1, characterized by the fact that it is equipped with a spring, a double-arm lever is mounted on the puller; the spring is connected to the two-arm and the puller, the feeding dog is mounted on the other end of the two-armed arm. 3. Pop-1 device, characterized in that it is provided with a mechanism for removing parts made in the form of a tray for moving parts located under the matrix with the possibility of reciprocating movement in a horizontal plane, a system of levers hinging the tray with a movable plate. 1 AT 2 zo Aa 22 .29 -Ґ 4Fig.