DE2352601A1 - DEVICE FOR REMOVING WORK PIECES FROM A PRESS - Google Patents

Description

DR. MÜLLER-BORE DIPLPHYS. DR. MANITZ DIPL-CHEM. DR. DEUFEL dipl.-ing. FINSTERWALD DIPL-ING. GRÄMKOW

Munich, 1 a. Qia 1973

R 1154 - Erb

HEGIE NATIOITAIE DES-USIIiES RENAULT 8-10, avenue Emile Zola,

92109 Boulogne-Billancourt

AUTOMOBILE PEUGEOT

75 ', avenue de la Grande Armle

75OI6 Paris, France.

Device for removing workpieces from a

Press

The invention relates to the removal and export of punched or drawn or pressed workpieces from a press.

There are already devices for removing workpieces from a press known by the Mechanism of the press in coordination with the movement ' this mechanism can be operated and consist of a pivoting pallet that each manufactured Workpiece discharges exactly at the point in time at which the sliding element of the press is to carry out a new drawing - or. Pressing process or punching process lowers. The devices of this type use a mechanism to control the movement of these pallets, the

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consists of levers and cranks that move through the downward movement of the sliding element are operated.

Although these devices allow the drawn or pressed workpiece to be removed, they do allow them not removing it at a sufficiently high speed. The operation of the device must namely be synchronized with the movements of the press and this synchronism is all the more difficult to achieve the more complicated the drive of this device is.

To eliminate this disadvantage, devices have already been created, their ejection functions and Discharge functions are separated from each other; however, these devices are difficult for existing presses applicable.

The aim of the invention is to provide a device for automatically removing workpieces from a press to create that does not have the disadvantages mentioned above, i.e. its mechanism simple, robust and also is effective when the press is working at high speed. The extraction device according to the invention is for this purpose characterized in that it is a unit of two flat carts with telescopic movement the first of which is attached by suitable means attached to a frame located on the side of the press are carried and guided and the second by suitable devices attached to the first carriage is carried and guided and each of which on * each side one to the sliding direction of the telescopic The unit has a parallel rack, while the sliding element of the press has one on each side to the sliding direction the press has parallel drive racks, the transmission between these drive racks and

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the racks of the car are reached by six gears which are mounted on a common shaft rotatably mounted in the fixed • frame and each mesh with the drive racks and the racks of the two carriages and to the total strokes of the sliding element and the two carriages each have proportional pitch · circle diameters so that the telescopic unit in the extended position between the upper tool and the lower die of the press enters to receive the workpiece ejected by the ejectors and then out of the press in one with the downward movement lead out of the sliding element synchronized movement.

The sliding movement of the two ■ carriages can be carried out in one take place in the horizontal direction, alternatively but finds it in a press to be ascended, inclined direction instead.

Further details of the invention emerge from the following description of an exemplary embodiment, which is shown in the accompanying drawing. Show it: ·

Fig. 1 is a vertical longitudinal section through the removal device

Fig. 2 a.n cross section along the line II-II of Iig.1 and

I "ig. 3 shows a cross section along the line III-III of FIG. 1.;

In Fig. 1, the press is schematically with its lower fixed tool 1 and its upper movable Tool 2 shown in the closed position,

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this tool is shown to you in broken lines in the open position 2a. The device according to the invention for removing workpieces is shown on the side of this press. It has a stationary frame 3 in which four support rollers 4 with a horizontal axis and four guide rollers 5 with a vertical axis or, if the guide plane is inclined as in the example shown, are rotatably supported with an axis perpendicular to this guide plane. A lower carriage 6, which consists of two lateral longitudinal beams 7 ′, which are connected to one another by cross beams 8, can slide in this frame. Each longitudinal beam has a rail 9 ₅ which rests on the support rollers 4 on the corresponding side and is centered on the two guide rollers 5 on the corresponding side. An upper bevel 10, which each of these rails has, is blocked against upward movements by the conical part 11 which each shroud 5 has, so that any pivoting of the carriage when it protrudes is avoided.

^ There is a rack 12 on each side member 7 attached to drive the lower carriage 6.

On the other hand, this lower carriage also has four support rollers 1'3 and four guide rollers 14, which are similar designed like the support rollers 4 or the guide rollers 5 are, however, in this case not in the fixed frame, but in each of the two longitudinal beams 7 are rotatably mounted. This allows an upper carriage 15 to slide in this lower carriage 6, which is also made of two longitudinal members 16 connected to one another by cross members 17. Furthermore, each has a side member a ten rod 18 which also serves as a rail and of the two rollers 13 of the corresponding side is carried and by the two rollers 14 of the

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speaking side is led, whereby these should also have a conical part 19, the upper carriage 15 by acting on the upper bevels the rails 18 retains.

In this way, the unit of the two carriages 6 and 15 can be extended telescopically, as in FIG is shown with broken lines. As a result, the device can be prevented from taking up too much space and good guidance of the wagons' can be achieved. if That is, the lower carriage 6 moves from the position shown in solid lines to the position shown in broken lines Lines drawn position moves, so he remains, as Fig. 1 shows, constantly with the support rollers 4 and the guide rollers 5 in contact, although they are relative in the longitudinal direction are far apart, so a precise guidance without excessive force on these roles is achieved. Likewise when the carriage 15 moves from the position in solid lines to the position in interrupted Lines in Fig. 1 moves, so it actually moves only a short distance with respect to the support rollers 1J and guide rollers 14 carried by the lower carriage 6. In this way they stay Rails 18 of this carriage are constantly in contact with these rollers, although they are relatively far apart in the longitudinal direction are removed so. that, as stated above, they work under favorable working conditions.

To drive the unit of the two carriages, two drive racks 21 are used, each on one of the sides of the device are arranged. Each of these racks is with its upper end 22 and possibly also with their lower end on the sliding element 2 $ of the press attached to the one with the moving one

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Tool 2 is firmly connected.

To drive the racks 12 and 18, which in turn drive the lower Vfegen 6 "or the upper carriage 15, by this drive racks 21 are according to the invention six gears are used, which are all mounted on the same cross shaft 24, the one in the upper part of the frame 3 is rotatably mounted. The unit is symmetrical and there is a gear on each side 25 provided which meshes with one of the racks 21, the vertical or parallel to the direction of glare of the press is. This gear wheel 25 is fastened, for example, to the corresponding end of the shaft 24, which via roller bearings 26 is stored in the frame 5. Sin another gear 27, which is also attached to the shaft 24, meshes directly with the rack 12. A third gear 28, which is also is mounted on the shaft 24, meshes directly with the rack 18.

So that this drive is possible, must the three pitch circle diameters be? Gears 25, 27 and 28 of course to the total strokes of the slide element of the press, the lower carriage 6 and the upper carriage 15 (each proportional be, the stroke of the upper carriage 15 of course in relation to the frame and not in relation to the lower carriage.

The symmetrical drive of the gear wheels mounted on the same shaft 24 allows the two carriages 6 and 15 to be driven precisely in parallel without unusual forces and without the risk of jamming. As soon as the press opens, the telescopic unit of the two carriages is removed from the B ¹ Ig. 1 extended out in the manner shown in broken lines to

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that brought in through the ejectors of the press Workpieces, and when the press closes again, the unit is drawn in synchronously, into your ' the ejected workpiece is removed. The great robustness and the high accuracy of the unit permit their operation absolutely synchronous with the press, regardless of their work rhythm.

If the sliding direction is as shown in the! "All is inclined towards the press in an ascending direction, the workpiece can be picked up very close to its ejection and a lateral retraction movement can be achieved with a vertical downward movement is assembled, so that each meeting of the removal device with the movable tool of the press is avoided.

The unit has a very simple mechanical Structure, - because the device, 'apart from those firmly connected to the sliding element of the press. Share, has only three moving parts or units of moving parts, two of which (6 and 15) are rectilinear movpi and one, the shaft 24-, rotates.

The invention relates to the removal and removal of cut or drawn or. pressed white pieces from a press.

The extraction device consists of a unit of two flat trolleys with telescopic movement, the second of which is carried by the first trolley and each of which has a drive rack on each side, while the slide element of the press has a drive rack on each side, the transmission between These racks are achieved by six gears, which are mounted on a common shaft rotatably mounted in the fixed frame. 409821 / 03T9

Claims (3)

- ο - claims 1. j Device for removing workpieces from a press, in which a removal element is driven synchronously by the movement of the sliding element of the press. is characterized by two
That it has a unit of / flat trolleys with telescopic movement, the first of which is carried and guided by suitable means attached to a frame arranged on the side of the press and the second of which is carried by suitable means attached to the first carriage and is guided and each of which has on each side a rack parallel to the sliding direction of the telescopic unit, while the sliding element of the press has on each side a drive rack parallel to the sliding direction of the press, the transmission between these drive racks and the racks of the carriages by six gears is achieved, which are mounted on a common, rotatably mounted in the fixed frame shaft and each mesh with the drive racks and the racks of the two carriages and each have proportional pitch circle diameter to the total strokes of the sliding element and the two carriages, so that the telesko Partial unit in the extended position between the upper tool and the lower tool of the press occurs _? in order to pick up the workpiece ejected by the ejector and then lead it out of the press in a movement synchronized with the downward movement of the sliding element " 2. Apparatus according to claim 1, characterized 2352801 characterized in that the support and IT guide devices of the first carriage and the second carriage each from support rollers with a horizontal axis and from Guide rollers with an axis perpendicular to the plane of the car exist, these roles in the first car in the fixed frame and in the case of the second carriage are rotatably mounted in the first carriage and in the longitudinal direction are as far away from each other as the lift of the respective wagon allows. 3. Apparatus according to claim 2, characterized in that each! Guide role has an upper conical part which cooperates with an upper bevel of the guide rail, to hold the corresponding carriage against swaying movements. 4 * Device according to one of the preceding Claims, characterized in that the guide plane of the car is one towards the press has an ascending tendency. 409821 / 031-9