SU1398953A1 - Die for bending articles of closed shape - Google Patents

Description

(21) 4160760 / 25-27

(22) 12.12.86

(46) 05/30/88. Bksh. Number 20

(71) The branch of the Rostov Research Institute of Mechanical Engineering Technology in Rivne

(72) V.A. Ivaschuk and A.N. Naumets (53) 621.981.1 (088.8)

(56) USSR Author's Certificate No. 1147476, cl. B 21 D 22/02, 1982.

. (54) STAMP FOR FLEXIBLE CLEAR FORGES. .

(57) The invention relates to pressure treatment of sheet, varietal,; profile material and pipes, in particular, to rods for bending with a mechanism for extracting products. The goal is to increase productivity; due to mechanical removal of products.;

with a punch when idle the slide press. The stamp contains a spring-loaded holder mounted in the holder; n top plate. The holder is made with supports. A mandrel is fastened to one of the supports. There is also a composite matrix with wedge sliders mounted on the bottom plate and a mechanism for removing the product from the mandrel. The latter is made in the form of a two-arm lever mounted on a support, with a carrying mechanism, and rods with a swivel support. Long shoulder the lever is connected with a pusher on the mandrel, and the short arm has a roller, which periodically interacts with a pivoting stop. During the return stroke, the roller mounted on the short arm of the lever interacts with the movable stop, and the long arm ensures removal of the product. 4 il.

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The invention relates to the processing of sheet metal, varietal, profile material or pipes, in particular, to dies for bending with the mechanism of extraction of products.

The aim of the invention is to increase labor productivity due to the mechanical removal of products from the mandrel during the return stroke of the ram press

Fig. 1 shows a stamp for bending closed-shaped products at the moment of the end of the bending process, a section along the axis of the working element of the punch; fig 2 is the same cross section; Fig. 3 is the same, view from the side of the arrangement of the device for removing articles from the mandrel; in Fig. 4, a stamp at the moment of removing the product from the mandrel.

A stamp for bending closed-shaped articles contains the bottom plate 1 with the clamp 2 fixed on it, the lower part 3 of the composite matrix, the guides 4 sliders 5 made from the return springs 6 and the supporting lateral parts 7 of the composite mat1 and also the top plate 8, on which the wedges 9 which are made firmly able to interact with the half-sleeves 5 and the holder 12, which is sprung by the springs 11, is placed in the holder 10. The support 13 is pivotally connected to one end the mandrel 14, and the support 15 in contact with a second condom; the mandrels 14. On the support 13, a fire-: defining rotation of the working element is made: that 14 bevel 16 and an I7 bracket is installed, the 1st axle 18 is laid with the two-arm lever 19 mounted on it with the possibility of rotation, equipped with a spring-loaded 20 of it.

On the mandrel 14, a pusher 21 is mounted with the possibility of moving along it, the axis, which is made in the form of a sleeve embracing this working element.

One shoulder of the two shoulders of the shaft 19 is connected by means of a pull 22 with a pusher 21, and a roller 23 is mounted on the second.

On the bottom plate 1, a trouser is attached: ha 24, carrying a pivot stop 25j pivotally associated with it, which can be rotated in a plane perpendicular to the axis of the mandrel 14, in the working position,

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The rod 24 is made with a surface 26, limiting the movement of the rotary support 25. Turning the stop 25 is equipped with a spring 27 return, and at its end made the bevel 28.

 Bearing 13 is provided with a groove for smooth rotation of the two shoulders lever 19 and moving the pull 21, and bearing 15 with a groove ensuring smooth movement of the protruding ends of the product 29.

Stamp for bending products closed form works as follows.

With the working stroke of the press slide, the mandrel 14, turning to the stop of the free end into the support 15, presses the workpiece against the clamp 2 and bends it along the lower part 3 of the composite matrix. Then, using wedges 9, along the guides 4, the sliders 5 are moved and the workpiece is finally bent by the side portions 7 of the composite matrix. At the same time, the double-shouldered lever 19 under the action of the spring 20 and the connecting rod 22 holds the push rod (L 21 away from the working area, and the roller 23 mounted on the double-arm lever 19 interacts with the bevel 28 of the pivoting stop 25, turning the latter, and lowering it below. After the contact of the pivoting stop 25 with the roller 23 is discontinued under the action of the return spring 27, the pivoting stop 25 returns to its original position against the stop in the surface 26 that restricts it to turn on the rod 24.

At the beginning of idling, the return springs 6 retract the sliders 5 with the side portions 7 of the composite matrix to their original position. The holder 12 springs 11 rises to the shoulders of the holder 10 and begins to rise in the upper position together with the mandrel 14 and the finished product 29. The free end of the mandrel 14 is lowered to the stop of the opposite end of this element in the bevel 16 of the support 13, and the protruding ends of the product 29 enter in the groove made on the support 15. In the further progress of the press ram, the roller 23, engaging with the pivot stop 25, acts on one shoulder of the two shoulders lever 19 and, overcoming the force of the spring 20, turns the double-arm lever 19 around the axis 18, ond arm is thrust by the pusher 22, and 21 affects the finished product 29, remove it from the mandrel 14,

At the end of the stroke of the press slide, the roller 23, rolling around on the pivot stop, .. 25, disengages from the latter, and the spring 20 rotates the double-arm lever 19 to its original position, displacing the removable element 21 at the same time - then the boch zone.

The use of this stamp ensures a higher labor productivity due to the provision of the removal of a closed-shaped product from the mandrel 15 during the idle code; allows to improve the conditions of service of the stamp and the safety of its operation due to the mechanization of the process of removal of the product; improve the conditions of mechanization 20 spring-loaded swivel to the rod

on the slab, and a mechanism for removal of the workpiece from the mandrel, which is different from the fact that, in order to improve labor productivity by ensuring the removal of the product during the backward movement of the upper plate, the mechanism for removing the product from the mandrel is completed as a bracket mounted on the first support and an axle bearing a lever mounted with the possibility of rotation on the axis and a plate spring-loaded to the plate with a roller on a short plate, rod, a hinge connected to the long arm of the lever, an annular pusher mounted on a mandrel and connected to the other end t gi, tano on the bottom plate of the rod with a restrictive surface,

transporting the product outside the press

Claims (1)

Invention Formula Stamp for bending products of closed form, joining a composite bending matrix with a clamp mounted on the bottom plate, spring loaded to top plate and mounted in engagement with the second support, the first support having a groove for accommodating the pull and long arm of the lever and a bevel for restricting the rotation of the mandrel, and the second bearing having a groove for enabling removal of the product. Me holder with two supports for the mandrel, two spring-loaded wedge sliders, placed in guides on the bottom plate and interacting with wedges mounted on top of the 2S П spring-loaded swivel a plate, and a mechanism for removing the product from the mandrel, characterized in that, in order to increase labor productivity by providing removal of the product during the reverse course of the top plate, the mechanism for removing the product from the mandrel is completed in the form of a bracket mounted on the first support and an axle-carrying arm mounted pivotally on an axis and spring-loaded to the top plate with a roller on a short arm, a hinge connected to the long arm of a lever, an annular pusher mounted on a mandrel and connected to the other end the rod mounted on the bottom plate of the rod with the restrictive surface, the subdura with the bevel on the upper plane, installed with the possibility of swinging in a plane, perpendicular to the axis of the mandrel, and periodic interaction with the roller, and the mandrel installed console with the possibility of swinging on the first support, carrying mechanism for removal of the product, and performed with a flat on the loose end for Futf Type D Phi. 2 FIG. five 29