Casting machine
A casting machine (1) having a device for controlling a movement of the foundry ladle (9), and a control cam (33) having a roller path (29) on which the foundry ladle (9) is movably carried is provided. The casting machine further includes a lifting device for lifting the foundry ladle (9) prior to tilting and lowering of the foundry ladle (9) once it has been emptied for filling it with molten material. The foundry ladle (9) is mounted so as to swing about a vertical axis (A) from the casting position to an exchange position.
The invention is directed to a casting machine according to the preamble of the independent claims 1 and 4.
From WO 97/24200 a method and a device are known for controlling the movement of a foundry laldle with a low casting height in a casting arrangement. This method and/or this device allows by purely mechanical means the performance of the tilting movement in an advantageous manner. However, the exchange of the empty foundry ladle for a foundry ladle filled with new melt is unpractical. Furthermore, the feeding of the foundry ladle to the casting boxes, which are usually guided along the casting arrangement on cars, must occur by a separate drive, i.e. on conveyers which run lateral to the drive path of the casting boxes. During tilting, the foundry ladle is guided on two parallel positioned curved paths; additionally it is suspended on both sides between the curved paths. This dual suspension complicates the exchange of the empty foundry ladle for a newly filled one quite considerably, because during the transfer of the foundry ladle the latter must be lifted out of the guides.
SUMMARYThe objective of the present invention is to create a casting machine, by which the foundry ladle can be guided purely mechanically on curved paths and can optimally perform a tilting movement. Another objective of the invention comprises that the suspension of the foundry ladle is provided such that an easy exchange of the empty foundry ladle for a full one is enabled.
This objective is met through the features of claims 1 and 4.
By the unilateral suspension of the foundry ladle at a control cam using two pairs of roller paths, namely an interior one and an exterior one, it is achieved, on the one hand, placement of the foundry ladle on the floor and release of the foundry ladle from the suspension and/or the lifting of a foundry ladle filled with melt from said place into the initial position for tilting, and, on the other hand, to perform the tilting movement such that the outflow can occur in a best possible manner. Furthermore, by linking a control cam to a vertically positioned rotational axis, the foundry ladle can be rotated together with the control cam around said axis and can be lowered for the transfer to a transportation device, which removes empty foundry ladles and feeds new ones. Additionally, performance of both the lifting and the lowering movement as well as the tilting movement by a single drive is also achieved.
BRIEF DESCRIPTION OF THE DRAWINGSUsing an illustrated exemplary embodiment, the invention is explained in greater detail. In the drawings:
In a schematic representation according to
Based on the perspective representation in
The carrying car 23 comprises two pairs of rollers, namely an upper pair of rollers 25 and a lower pair of rollers 27. The upper pair of rollers 25 run on the upper roller path 29; the lower pair of rollers 27 runs on the lower roller path 31 (also compare
Based on
After having passed through said intermediate sections 43, 45 the pairs of rollers 25, 27 continue to travel further on the above tilting roller path sections 47, 49, preferably comprising a constant radius, and pivot the foundry ladle 9 from a position shown at the bottom of
As soon as the foundry ladle 9 is empty or the melt remaining in the foundry ladle 9 is insufficient for filling another mold in the casting box 3, the carrying car 23 returns to the starting position, subsequently the carrying car 23 pivots counter-clockwise around a vertical axis A by approx. 90° (cf.
The pivot axis A can support the control cams 33, 35 and, thus, it can be connected to them or the axes can be arranged between the carrying car 23 and the holding plate 21 (not shown.)
Claims
1. A casting machine (1) with a device for controlling movement of a foundry ladle (9), comprising a control cam (33) with roller paths (29), on which the foundry ladle (9) is supported in a displaceable manner, and a lifting device for lifting the foundry ladle (9) prior to tilting and for lowering the foundry ladle (9) after emptying and for refeeding with a new melt, wherein the foundry ladle (9) is suspended unilaterally and is supported pivotally around a vertically arranged axis (A) for movement from a casting position to an exchange position.
2. A casting machine according to claim 1, wherein a carrying car (23) carrying the foundry ladle (9) and the control cam (33) is pivotally supported on the axis (A).
3. A casting machine according to claim 1, wherein the pivot axis (A) is arranged between a carrying car (23) for the foundry ladle (9) and a holding plate (21).
4. A casting machine (1) having a device for controlling movement of a foundry ladle (9), comprising a control cam (33) with roller paths (29), on which the foundry ladle (9) is movably supported, and a lifting device for lifting the foundry ladle (9) prior to tilting and for lowering the foundry ladle (9) after emptying and for refeeding with a new melt, wherein the foundry ladle (9) is suspended unilaterally from a carrying car (23), and two pairs of rollers (25, 27) are mounted on the carrying car (23), with an inner roller of each pair of rollers (25, 27) being supported and rolling on an interior roller path and an exterior roller being supported and rolling on an exterior roller path on the control cam (33).
5. A casting machine according to claim 4, wherein the control cam comprises two control cams (33,35) which include two roller paths (29, 31) each, which are positioned parallel to and offset from one another.
6. A casting machine according to claim 5, wherein at an upper roller path (29), subsequent to a linear upper section (41), one intermediate section (43) follows, which provides for a lowering and displacement movement for a spout (11) of the foundry ladle (9), which is tilted more than a subsequent section (47) for initiating a tilting motion for casting.
Type: Application
Filed: Jun 10, 2004
Publication Date: Aug 31, 2006
Applicant: Künkel-Wagner SLS Swisspour AG (Wiler bei Seerdorf)
Inventors: Fritz Lauper (Wiler bei Seedorf), Markus Siegenthaler (Radelfingen b. Aarberg)
Application Number: 10/560,258
International Classification: B22D 37/00 (20060101); B22D 35/00 (20060101);