EP0993892B1 - Knock-out station for flaks - Google Patents

Abstract

The emptying station (1) for mould boxes (3, 4) containing moulds (5) incorporates a pusher-out unit (12, 13) for the mould package (15) in the mould box (3, 4). The emptying station has two guide tracks (9), one above the other, for the mould box which stands on its side during the emptying process. The pusher-out unit includes a horizontally movable press ram (12) and a thrust plate (13). On the side opposite to the pusher-out unit, the station has a seating (14) for the mould package (15).

Description

The invention relates to a unpacking station for molded boxes Casting molds with an ejection unit for the one contained in the molding box Shaped bales.

One is from EP 0 878 258 A1 (Article 54 (3) EPC), which has not been previously published Casting system described, which shows a unpacking station for the mold boxes. The unpacking station has an ejection unit in the form of a press plate, which is moved by a press ram. On the opposite side of the Unpacking station is a receptacle for the ejected bale of form arranged.

In foundries, mold-bound molds are made after casting and emptied after cooling. The emptying is done either by shaking the Molding box or in mechanized molding plants by expressing the Mold bales from the mold box. The expression is often done by top down, the bale of form from a considerable height a transport device falls, which is too sensitive with castings Can cause damage. Another way of expressing yourself is in that the shaped bale is pushed out from the bottom up, whereby however, a push-off device is required that the form bales of the ejection plate on a transport device for further transport pushes.

For modern molding plants, manual savings are made Activities often require that the casting be automatic hung on a hanging transport device and from the bale for automatic further transport is pulled out. However, this requires the shaped bales after being pressed out and pushed off to stand vertically so that the casting for the hanging conveyor is within reach. For vertical position the bale of form is therefore another, very complex Device required.

The object of the invention is to propose an unpacking station, which they previously considered necessary Reduced work steps and easy to set up and is inexpensive to manufacture.

This object is achieved in that the unpacking station has two superimposed guideways for the one arranged upright during the unpacking process Molding box has that on one side of the molding box the ejection unit in the form of a Press plate provided horizontally movable press die and on the opposite side of the molding box a receiving table for the shaped bale arranged is. According to an advantageous embodiment a hanging conveyor track above the recording table arranged that the casting from standing out pulls out the bale of mold that is pushed out. The two superimposed guideways serve on the one hand, through the upright molding box to run the unpacking station and at the same time an abutment to form when the bale of form from the side the mold frame of the mold is pushed out. The Casting can then be done easily with a hanging The transport path is pulled out of the bale and be transported away.

For the unpacking process in the unpacking station the mold can be arranged vertically, whereby this can be done either by lying down Cast mold brought up on the transport line via a Turning device placed vertically and then the unpacking station is fed. After unpacking the mold is then in a vertical position fed to and through this second turning device transferred back to the horizontal position, which is advantageous for molding the mold as well as for core insertion is. However, it is also conceivable to go to the unpacking station to integrate a turning device yourself, then the guideways advantageously to one common driven slewing ring are attached.

For a casting system in which the mold boxes are poured horizontally it turned out to be advantageous the turning device with four at an angle of 90-degree guideways, so that the molded boxes are inserted horizontally into the unpacking station can be and pushed out of this standing to become. After unpacking the molding box turned back again. Such a device can can also be integrated into an unpacking station so that also unpacked cast molded boxes and again be transferred to a lying position after unpacking can.

Fig. 1

in perspektivischer Ansicht eine Auspackstation, die gleichzeitig als Wendeeinrichtung ausgebildet ist,

Fig. 2

einen Querschnitt durch eine Auspackstation ähnlich Fig. 1, bei der jedoch die Formkästen liegend oder stehend antransportiert werden können,

Fig. 3

einen Schnitt entsprechend Fig. 2, jedoch mit verschobenem Aufnahmetisch,

Fig. 4

eine Auspackstation gemäß der Erfindung, der Wendeeinrichtungen vor- und nachgeschaltet sind und

Fig. 5

einen Schnitt durch die Auspackstation nach Fig. 4.

Further advantageous embodiments of the invention are described in more detail below with reference to the drawing, in which:

Fig. 1

a perspective view of an unpacking station which is simultaneously designed as a turning device,

Fig. 2

2 shows a cross section through an unpacking station similar to FIG. 1, but in which the molded boxes can be transported lying or standing,

Fig. 3

2 shows a section corresponding to FIG. 2, but with a displaced receiving table,

Fig. 4

a unpacking station according to the invention, the turning devices are connected upstream and downstream and

Fig. 5

a section through the unpacking station of FIG. 4th

Fig. 1 shows an unpacking station 1 in a transport line 2, is turned on. The two mold box halves 3.4 molds 5, are from the right seen in the drawing the unpacking station 1 standing fed. For this purpose, the molding boxes 3, 4 on a Transport line 2 arranged upright, consisting of two U-beams 6, which has transport rollers on the inside 7, have. The removal of the molds 5 done in a horizontal manner from the unpacking station 1 likewise via a transport line 2, which accordingly the first transport line is formed, wherein however, the U-beams 6 are at a greater distance from one another exhibit. The unpacking station 1 has a slewing ring 8 on the two opposite guideways 9 wears. These guideways 9 also point Transport rollers 10 on the mold 5 to the corresponding Support approaches 11. The construction of these guideways 9 goes in particular from FIGS. 2 and 3 forth.

On one side of the unpacking station 1 is a press ram 12 provided with a press plate 13 and on the opposite side, a recording table 14 for the inclusion of the mold bale 15 of the casting mold 5.

By moving the press plate 13, the form bale 15 pressed out of the molding box 3, 4 and onto the Recording table 14 pushed on. The vertical one Casting 23 can then through a hanging conveyor 16, as shown in Fig. 2, added and be transported away.

After emptying the two mold box halves 3, 4 the molding box is turned 90 degrees around its longitudinal axis and pulled out lying on the transport line 2 or pushed. 2 and 3, that in Fig. 1 is schematic Unpacking station shown in more detail shown.

The unpacking station 1 has a frame 17, wherein the turntable 8 on rollers 18 carried by the frame rests. A drive motor 19 serves to turn the turntable.

One is the cylinder 20 receiving the ram 12 also mounted on the frame so that the press plate 13 executes a horizontal movement. In the amount of The opening of the two mold box halves 3, 4 is the receiving table 14 arranged, which is slidable on rollers 21 is stored. A piston-cylinder unit is used for the displacement 22. This shift of the table is required when the molding box is in the unpacking station should be turned so that it is standing unpacked or, if necessary, lying back out of the unpacking station can be brought out.

The castings are removed by means of a hanging conveyor track 16, which takes the castings 23 and separates them from the molding sand 24.

3 shows the mold 5 transported horizontally shown.

4 and 5, an unpacking station 1 is shown which is switched on in a transport line 2, in which the molded boxes are poured horizontally, unpacked standing and transported further lying down. The unpacking station 1 are each a turning device 25,26 upstream or downstream, these turning devices are each provided with four guideways 27, so that the molds 5 in each of the turning devices from lying to standing or from standing can be transferred to the lying position. The transport of the molding boxes through the turning devices 25.26 can only be done by pushing the Molded boxes 3.4 are accomplished. The structure of the Unpacking station is shown in detail in Fig. 5, in contrast to the unpacking station 1 to 3, the guideways 9 rigid with the frame 28 of the unpacking station 1 are connected. The order the ejection unit 12, 13, 20 is the same as in FIGS 1 to 3 are shown. There is a difference in the formation of the recording table 14, which is in contrast here to the embodiment of FIGS. 1 to 3, can be rigid.

Reference symbol list:

1 -

Unpacking station

2 -

Transport line

3.4 -

Mold box halves

5 -

Mold

6 -

U-beam

7 -

Transport rollers

8th -

Slewing ring

9.27 -

Guideway

10 -

Transport rollers

11 -

approaches

12 -

Ram

13 -

Press plate

14 -

Shooting table

15 -

Shaped bales

16 -

Transport track

17 -

frame

18.21 -

roll

19 -

Drive motor

20 -

cylinder

22 -

Piston cylinder unit

23 -

Castings

24 -

Molding sand

25.26 -

Turning device

28 -

frame

12.13.20 -

Ejection unit

Claims (8)

1. A knock-out station (1) for casting moulds (5) provided with moulding boxes (3, 4), comprising an ejection unit (12, 13, 20) for the mould body (15) contained in the moulding box (3, 4), wherein the knock-out station (1) has two guideways (9) arranged one above the other for the moulding boxes (3, 4) which, during the knock-out process, are arranged upright, and the ejection unit (12, 13, 20) in the form of a horizontally movable pressure ram (12) provided with a pressure plate (13) is arranged on one side of the moulding box (3, 4), and a receiver (14) for the mould body (15) is arranged on the opposite side of the moulding box (3, 4).
2. A knock-out station according to claim 1, characterised in that the guideways (9) are part of a turning device and rotate the moulding box (3, 4) about its longitudinal axis.
3. A knock-out station according to claim 1 or 2, characterised in that the knock-out station (1) is interposed in a conveyor line (2) of a casting installation.
4. A knock-out station according to any one of claims 1 to 3, characterised in that a respective turning device (25, 26) for rotating the moulding box (3, 4) about its longitudinal axis is arranged upstream and/or downstream of the knock-out station (1) in the conveyor line (2) of the casting installation.
5. A knock-out station according to claim 4, characterised in that the turning device (25, 26) has a second guideway (27) extending parallel to the first guideway (9), but shifted through 90° relative to the first guideway (9) and movable synchronously with the first guideway (27).
6. A knock-out station according to any one of claims 1 to 5, characterised in that each guideway (9, 27) is fixed to a rotary ring (8) operatively connected to the drive motor (19) of the turning device (25, 26).
7. A knock-out station according to any one of claims 1 to 6, characterised in that the turning device (25, 26) interconnects two conveyor lines (2) of different widths, the one conveyor line (2) conveying the moulding box lying down and the other conveying the moulding box upright.
8. A knock-out station according to any one of claims 1 to 7, characterised in that a conveyor track (16) for the casting (23) is provided above the receiving table (14).

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