SU1606238A1 - Progressive die - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to successive dies. The purpose of the invention is to expand the range of equipment used by reducing the requirements for its rigidity. The stamp contains the top plate (PL) 1 with concentrically mounted pneumatic cylinders. On the piston (PR) 6 of the internal pneumatic cylinder, punches (P) 11 are mounted for forming projections and depressions. The PR 5 of the external pneumatic cylinder is connected with the puller 10. On the PL 1, P 20 is also installed for cutting plates and pushers 34, 35 for pushing the plates pressed into the tape and assembling them. Matrix 23, pneumatic cylinder with PR 29, ejector 25 for reverse pressing of the cut plate, counterpanson 24 is installed on the lower PL 21. The latter and ejector 25 are connected to PR 29. In PL 21 coaxially with pushers 34, 35 of cavity 36 and 37 for accumulation and assembly of plates in packages. The pusher 34 is made off. There is an anvil 13 on the PR 6 and an anvil on the PL 21 to limit the closed height. At the working stroke of PL 1, protrusions and depressions are molded by means of P 11, matrix 23 and counter-punches 24. Next, cutting the outer contour and re-pressing the plate, then pushing the plates by the pusher 34 into cavity 36 and assembling them. By filling the cavity 36, the pusher 34 is turned off and then the plates are pushed out by the pusher 35 into the cavity 37. 6 Cp. f-ly, 3 ill.

Description

The invention relates to the processing of metals by pressure, in particular to dies for processing sheet material, and can be used in the manufacture and assembly of plates of electrical machines.

Pel of the invention is an extension of the dy-range of the equipment used by eliminating the requirements for its accuracy.

FIG. 1 shows a longitudinal section die J in FIG. 2, a tape stamping scheme | on fig.Z - section aa in figure 2. i The stamp contains an upper plate 1 with an intermediate plate 2, into which is mounted pneumatic cylinders consisting of concentric sleeves 3 and 4; an annular piston 5 and a piston 6 which is concentric with it, which is simultaneously a punch-holder, movable relative to the top plate 1. Channels 7 are squeezed to supply compressed air in the cavity of the pneumatic cylinders. The annular piston 5 through columns 8 moving B separators 9 is connected with a movable pick-up 10. On the punch holder-piston there is a solder 11 for molding the outcrops and depressions 5 catchers 12, sucking for centering 5 as well as the stops 13.

Managed punches H are located directly in the intermediate plate 2 and are used for punching through holes in the extreme plates of the bags in the places where the projections are molded.

five

0

five

0

five

0

five

Punches 14 are driven by an electromagnet (not shown) by means of wedges 15 o. On the same intermediate plate 2, a punch holder 16 is fixed, on which punches 17 are placed for punching holes for catchers 12, rivets 18 for punching holes for rivets, punch 19 for punching the technological hole in the plate, as well as a punch 20 for cutting the contour of the plate. I

 The bottom plate 21 of the stamp carries the matrix holder 22 with a matrix 23 located on it with openings for tools, located on the movable part of the stamp. Counterpansons 24 are also located in the matrix 23, roosted with punches 11 on the movable part of the punch, and an ejector 25 for pressing back into the tape cut W-shaped plate, located coaxially with the punch 20 for cutting the contour of the plates, Koktrupanons 24 and the ejector 25 interact through the pins 26 and 27 and the bracket 28 with the annular piston 29 of the pneumatic cylinder located in the lower section of the 21 stamps. The connection of said pneumatic cylinder with an air supply device (not shown) is carried out by channel 30. In the matrix 23, rigid stops 31 are installed, which interact with movable stops

13, placed on the movable holder 6, as well as spring-loaded otlipateli 32.

marked paths located along the matrix 23.

The described assemblies and parts of the stamp are the part where the cutting of the W-shaped plates with protrusions and depressions is carried out.

In addition, the stamp includes an accumulation unit with protrusions and depressions of the cut plates, which is made in the form of two consecutive pushers 34 and 35 placed in the upper part of the stamp and the corresponding two receiving cavities 36 and 37 located in the lower part of the stamp. In the receiving tracks there are movable receiving supports 8 and 39 moving in the controlled brake elements 40 and 4. The pusher 34 is controllable and is driven from the electromagnet 42 by means of a wedge 43. In addition, the accumulation unit contains a safety device 44 located in the upper part a punch directly in front of the pusher 34 and designed to center the tape with the plates cut down and pressed into it, as well as the knife 45 used to crush the waste that is removed along the tray 46. The position 47 denotes the of the flat type for the directional movement of the tape with pressed-in parts.

The scheme in figure 2 contains the processed tape 48 at the hole 49 under the catchers 12, the holes 50 for rivets, technological hole 51, hollows 52, parts 53, protrusions 54, - waste 55.

The stamp works in the following way.

Compressed air is supplied to the upper 1 and lower 21 plates through the channels 7 and 30, respectively. When the upper plate 1 moves downward, the punches 17 pierce 48 holes in the ribbon 48 for loTs 12, punches 18 - rivet holes 50, punch 19 - technological hole 51, depressions 52 and projections 545 are molded by punches 1 1 - cutting of parts 53. In the cavity of the annular piston 5 and the piston-piston-carrier body 6, compressed air of different pressures is supplied, since the pressing force differs from the pressing force. The force developed in the cavity of the piston n the punch holder 6, provides

1606238

0

forming the depressions 52 and protrusions 54. When the upper plate 1 is moved below the allowable (for example, due to insufficient rigidity of the slider or play in the slider-connecting rod of the press), the moving stops 13 Contact the rigid stops 31, which hold the piston-punch the holder 6 together with the punches 11, ensuring constant dimensions during the molding and preventing jamming of the press.

Located in the bottom plate 21

5, the pneumatic cylinder with the annular piston 29 through the bracket 28 connected with this piston and the pins 26 creates counteraction on the counterpansons 24 during molding, as a result of which the pro-0 proceeds to calibrate the bottom of the projections 54 to increase the contact plane of the interface with another part. Controlled punches 14 for punching through holes in the outermost parts are activated by a command from a counting device (not shown).

five

After cutting the contour of the plate 53 with the punch 20, the ejector 25 30 presses the punched plate 53 back into the tape 48, and after lifting the press slide, the dispensers 32 lift the tape 48 with the plates 53 pressed into it to the required height above the mirror of the matrix 23, making it possible to move it to canapes under the stripper 47. Before assembling., the coy plates 53 into the bag at the position of storing and fixing the cut out Q plates 53, the tape 48 is caught by the catchers 44 and is centered over the receiving cavities 36 and 37. The pushers 34 and 35 and the receiving supports 38 and 39 serve for assembling out-of-weighing plates with 5 tin 53 into a bag and alternately go into operation. As the receiving cavity 36 is fully loaded, from the sensor (not shown) controlling this receiving cavity, the 0 command is given to the electromagnet 42, which with the help of the wedge 43 removes the pusher 34 from its work and the punch 35 enters into operation with the corresponding receiving support 39. At the expense of the braking elements 5 and 40, a bottom resistance is created for compressing the bags and securing the plates 53 to each other. In the course of such an assembly, the extreme sheets having no protrusions allow from -.

divide one packet from the other (the bundle of bonded packets from the receiving cavities 36. and 37 are not shown). . Waste 55 - the ribbons are cut by the knife 45 and carried out in tray 46.

The present invention allows the use of a stamp on equipment with reduced accuracy requirements.

Claims (7)

Invention Formula 1, A sequential stamp for making plates of electrical apparatus and assembling them into packages containing a movable plate, on which a punch holder with punches for forming protrusions and depressions are installed, a punch for cutting, a puller and means for its relative movement, and a fixed plate , on which the matrices corresponding to said punches are installed, counter-pans for forming protrusions, means for their relative movement, and an accumulation and assembly unit for plates comprising a cavity and In it, the means of receiving plates, characterized in that with expanding the range of equipment used by reducing the requirements for its rigidity, the punch holder is movable parallel to the pressure axis of the die relative to the movable plate and equipped with a drive and movement limiters, the fixed plate is equipped an ejector for pressing in the material cut into the material; the accumulation and assembly unit is placed in an independent position, is located outside the working area of the puller and is equipped with 0 0 5 o o o pusher for separating the workpiece from the material and assembly, mounted on a movable plate. 2.1 Chuck POP.1, characterized in that the drive of movement of the punch holder is made in the form of a pneumatic cylinder, and the punch holder is made in the form of a pneumatic cylinder piston, 3. A stamp according to Claim 1, about tl and cha Yu., Y and so that the means of moving the puller are made in the form of an annular pneumatic cylinder placed on the moving plate, which has a piston connected to the puller, 4. A stamp according to claim 1, in connection with the fact that the means of displacement of the counterpunches are made in the form of an additional pneumatic cylinder placed on the fixed plate, the piston of which is connected with the ejector and counterpansons. 5. Stamp in PP, 1 and 2j characterized in that, in order to ensure the accuracy of the height of the protrusions, the movement stops of the pounder of the sonic holder are made in the form of stops, one of which is mounted on the fixed plate and the other on the pneumatic cylinder. 6. Stamp according to clause 1, which is different from that, in order to increase productivity, it is equipped with an additional accumulation and assembly assembly, and the pusher of one of the assemblies is equipped with disconnecting means. 7. Stamp according to Claims 1 and 6, characterized in that the discharger equipped with disconnect means is located first along the material feed. go CSJ t trj m)