Claims
- 1. Process for the separation of aluminium and grey cast iron cuttings from a mixture of cuttings with the following steps:
(a) the cutting mixture is collected and this is fed to a first transport section, (b) the cutting mixture is transported along the first transport section and subjected to a magnetic field in such a manner that due to the effect of gravity the aluminium cuttings leave the first transport section at a first location and the grey cast iron cuttings, held by the magnetic attraction of the magnetic field, follow the first transport section for a predetermined distance as far as a second location and also leave this transport section there, wherein the cuttings are gathered separately from one another at the first and second locations.
- 2. Process according to claim 1, characterised by the following additional step before step (b):
(a1) the cutting mixture is shaken on a vibration section.
- 3. Process according to claim 1 characterised in that the cuttings are directed through an oil-dissolving rinsing bath on the first transport section.
- 4. Process according to claim 3, characterised in that the rinsing bath is subjected to ultrasonic energy.
- 5. Process according to claim 1, characterised by the following further steps:
(c) the cuttings dropping from the first and second locations are transported respectively on a second and third transport section and (d) the cuttings are dried, in particular by the action of thermal energy.
- 6. Process according to claim 1, characterised by the following further step:
(e) the cuttings dropping from the first and second locations are fed respectively onto a fourth and fifth transport section and (f) the fourth and fifth transport sections are respectively subjected to a magnetic field in such a manner that due to the effect of gravity the non-magnetic aluminium cuttings leave the respective transport section after a predetermined distance at a third location, whereas under the influence of the magnetic field the magnetic grey cast iron cuttings leave the respective transport section at a fourth location spaced from the third location.
- 7. Process according to claim 6, characterised in that in step (f), the cuttings dropping from the third location of the fifth transport section due to the effect of gravity are fed to the fourth transport section.
- 8. Process for machining cylinder crankcases on a production line, wherein cuttings produced during machining are collected, characterised in that on the production line cylinder crankcases of grey cast iron as well as cylinder crankcases of aluminium are machined directly one after the other and from the collected mixed cuttings grey cast iron cuttings are separated from aluminium cuttings.
- 9. Process according to claim 8, characterised in that the separation of the cuttings is conducted in accordance with the process according to at least one of claims 1 to 7.
- 10. Plant for collecting grey cast iron and aluminium cuttings produced during a work piece machining process, in particular in the case of a production line for cylinder crankcases, characterised in that this plant has a cuttings separation device for separation of grey cast iron and aluminium cuttings present in the form of mixed cuttings.
- 11. Plant according to claim 10, characterised in that the cuttings separation device has a first transport section (20) formed by two conveyor belts (22, 24) lying one against the other, wherein a device (28) for generating a magnetic field is provided in such a manner that a magnetic force acts on magnetic cuttings in the direction of the upper conveyor belt (22) in the direction of gravity, wherein the lower conveyor belt (24) in the direction of gravity is set back relative to the upper conveyor belt (22) contrary to the direction of transport, wherein further the end of the lower conveyor belt (24) forms a first location (34) of dropping cuttings and the end of the upper conveyor belt (22) forms a second location (36) of dropping cuttings.
- 12. Process according to claim 11, characterised in that the device (28) for generating the magnetic field is configured such that the influence of the magnetic force on the magnetic grey cast iron cuttings ends at the end (36) of the upper conveyor belt (22).
- 13. Plant according to claim 1, characterised in that a scraping device for scraping off magnetic grey cast iron cuttings lying on the upper conveyor belt (22) is provided at the end (36) of the upper conveyor belt (22).
- 14. Plant according to claim 11, characterised in that a rinsing bath (42) is provided, into which the first transport section (20) at least partially dips.
- 15. Plant according to claim 14, characterised in that a device for subjecting the rinsing bath (42) to ultrasonic energy is provided.
- 16. Plant according to claim 11, characterised in that after the first transport section (20) a device (46) for drying the cuttings is provided.
- 17. Plant according to claim 16, characterised in that the device (46) for drying the cuttings is configured such that it subjects the cuttings to thermal energy, in particular such that it comprises a radiant heater (46).
- 18. Plant according to claim 11, characterised in that a second transport section (32) associated with the first location (34) and a third transport section (40) associated with the second location (36) are provided, which respectively transport cuttings dropping from the first and second locations (34, 36) due to the effect of gravity to a fourth and fifth transport section (50, 68).
- 19. Plant according to claim 18, characterised in that a device (54, 72) forming a magnetic field is respectively disposed at the fourth and fifth transport sections (50, 68), wherein the magnetic field and the fourth or fifth transport sections (50, 68) are respectively configured such that due to the effect of gravity the non-magnetic aluminium cuttings leave the respective transport section (50, 68) after a predetermined distance at a third location (62, 74), whereas under the influence of the magnetic field the magnetic grey cast iron cuttings leave the respective transport section (50, 68) at a fourth location (58, 76) spaced from the third location (62, 74).
- 20. Plant according to claim 19, characterised in that the fifth transport section (68) is disposed above the fourth transport section (50) in the direction of gravity in such a manner that the cuttings dropping from the third location (74) of the fifth transport section (68) fall onto the fourth transport section (50).
- 21. Plant for machining work pieces made of aluminium or grey cast iron, in particular cylinder crankcases, characterised in that it has a device for collecting cuttings in accordance with claim 10.
Priority Claims (2)
Number |
Date |
Country |
Kind |
01/89704 |
May 2001 |
WO |
|
10024771.7 |
May 2000 |
DE |
|
Parent Case Info
[0001] This is a continuation of International Application No. PCT/EP01/05275, published in German under PCT Article 21(2) which is incorporated herein by reference in its entirety and for all purposes.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP01/05275 |
May 2001 |
US |
Child |
10294932 |
Nov 2002 |
US |