SU778884A1 - Die for producing hollow articles - Google Patents

Description

(54) STAMP FOR OBTAINING COMPLETE PRODUCTS

one

The invention relates to a tooling for obtaining hollow articles ({in particular, during trimming), the height of which exceeds the stroke of the press, 5 and the technological effort is the nominal force of the press.

A stamp for separation operations is known, having a frame, a carrier tool and a movable plate, as well as a Yu unit for moving another tool, having a hydraulic cylinder with a piston carrying another tool, and pushers fixed to the movable plate and entering the piston apertures Ij. five

A stamp for obtaining hollow articles is known, containing working tools, one of which is mounted on a movable plate and the other on a stationary one, and an axial assembly 20 for moving the tool mounted on a stationary plate relative to this plate towards the other tool.,

However, in the well-known stamp, the axial displacement unit is made in the form of a rack-and-pinion gear, the use of which does not allow to achieve the required accuracy when cutting hollow hedges with flanges.

The purpose of the invention is to improve the accuracy of manufacturing hollow articles with a flange during their cutting.

The goal is achieved by the fact that the axial displacement unit is made in the form of at least one hydraulic cylinder fixed in a fixed plate, with liquid and pollen located in it, spring-loaded relative to the upper plate, a float supported on the liquid the movable plate and interacting with the float, and the other tool is connected to the piston with the possibility of their joint movement relative to the fixed plate in the axial direction

FIG. 1: schematically shows the proposed stamp, longitudinal section; in fig. 2 is a view A of FIG. one.

The stamp contains a punch 1 with a safety gear 2, a puller 3, a movable plate-4 with pushers (guide columns) 5, and also stops 6 fixed in a holder 7 located at the top. They are designed for ease of setting up the stamp in terms of stroke. At the bottom of the stamp

installed matrix 8 placed on a fixed plate.

The stamp has an axial transfer unit of the matrices B, including a pusher 5, hydraulic cylinders 9, which are also guide sleeves with pistons 10, filled with a viscous fluid and mounted in a stationary cast 11, floats 12, supported by liquid and interacting with the slats 5. The pistons 10 are equipped with protrusions 13, which enter the grooves of the matrix 8 and are connected with fixed pins 11 by directional pins 14. Springs 15 are placed between the pistons 10 and the movable plate 4. The pistons 10 and floats 12 have seals 16, preventing oil leaks from splashes idrotsilindrov.

The stamp works as follows.

In the extreme upper position of the punch, and hence the punch 1 with the safety gear 2, its matrix 8 is in its extreme lower position, resting on the plate 11 (see Fig. 1, to the left of the center line). At the same time, the distance between the lower plane of the catcher 2 and the mirror of the matrix 8 exceeds the height of the product being forged, which makes it possible to freely install the product 17 in the matrix 8.

When the upper plate 4 moves down, the punch 1 can be lowered only by the amount of stroke of the press. The missing punch is made by the matrix 8, moving towards the punch, thanks to the fact that when moving downward, the pushers (guide columns) 5, pressing the floats 12, displace the oil from the piston cavity 10, oil, tiiB (3), turn, Eye: Pressure is set at the bottom of cylinder 9, pressing the plate to the press table, and at the annular section of the lower end of the piston 10 (oil movement in FIG. 1 is shown arrow.). PrnN 10 pbdnyyayo tSh and TiBoimi flange 1I13 raises the matrix 8. If a certain part of its path, the punch 1 and the matrix 8 meet, 11yearly while detachment of the flicker:; bt ydeliy | 111 torsion pressure developed by the press when gash, Increases by as many times as the area of the lower end of the piston 10 is larger than the area of the floats 12

The springs 15 in the Motion of the plate 4 and the cylinder 9 towards each other are compressed (see Fig. 1, to the right of the center line). .

When the die is moving, its centering relative to the punch is carried out due to the centering pins 14.

During the reverse course of the press, the columns 5 rise upwards, under the action of rectifying springs 15, as well as the weights of the matrix 8 and the pistons 10 themselves, the latter descend, displacing the oil into its own cavity. Oil raises the floats 12 and, when they occupy their extreme upper position, the matrix 8 assumes the initial position.

Removing the waste from the punch 1 during the return stroke is performed by the puller 3, and the finished product is removed from the failing window of the plate 11.

The proposed stamp has wide technological capabilities due to the fact that it can be operated on presses, the effort of which is less than the required technological effort for, operations, and the stroke is less than the height of the product ..

The use of a stamp also allows an increase in the utilization rate of the service in connection with the expansion of the field of application of presses with low speed and force.

invention formula

UlyeiMn to obtain hollow products, containing movable and fixed plates and interacting tools, one of which is fixed on the hinged plate, and an axial movement unit of another tool, characterized in that, in order to accurately manufacture hollow products with a flange during cutting, the node axial movement is made in the form of at least one hydraulic cylinder fixed in a fixed plate, with fluid and hollow piston placed in it, spring-loaded relative to the upper plate, float / bearing fluid, and a pusher mounted on a movable plate and interacting with the float, and another tool connected to the piston with the possibility of their joint movement relatively not. movable plate in the axial direction.

Sources of information taken into account in the examination

1. USSR author's certificate

 345999, cl. B 21 D 28/14, 15.10.79.

2. USSR author's certificate

 101136, cl. B 21 D 22/20, 01/19/55 (prototype).

Claims (1)

Claim Shoamp for receiving hollow products, containing movable and stationary 30 plates and interacting tools, one of which is mounted on a movable plate, and an axial movement unit of another tool, characterized in that, in order to improve the accuracy of manufacturing hollow products with a flange when they are trimmed, the axial movement unit is made in the form of at least one hydraulic cylinder mounted in a non-4θ movable plate, with a liquid placed therein and a hollow piston spring-loaded relative to the upper plate, a liquid-based float, and a pusher mounted on the movable plate and interactions po45 Enikeev with hot-melt and the other tool is connected to the piston with the possibility of joint movement with respect to the fixed plate in the axial direction.