US1230360A - Casting-machine. - Google Patents

Description

H. ALINDER.

CASTING MACHINE. APPLICATION FILED FEB. 28. new.

Patented June 19, 1917.

no WASHING m". o C

nnrrEi) STATES PATENT oEEioE.

HENRY ALIN'DER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS MANU- FACTURING COMPANY, OF MIL'WAUKEE, WISCONSIN, A CORPORATION OF DELA- WARE.

CASTING-MACHINE.

Patented June 19, 1917.

Application filed February 28, 1916. Serial No. 81,542.

To all whom it may concern:

Be it known that HENRY ALINDER, a subj ect of the King of Sweden, residing at Milwaukee, in the county of Milwaukee and State of WVisconsin, has invented a certain new and useful Improvement in Casting Machines, of which the following is a specification.

This invention relates to improvements in the construction of casting machines and especially to devices for automatically removing the castings from the molds of such machines.

An object of the invention is to provide a casting machine which is simple in construction and efficient in operation. One of the more specific objects is to provide means for automatically removing the castings from the molds of a casting machine. Another object is to provide a casting machine which is entirely automatic in its operation.

It has heretofore been customary to cast molten material, such as copper and iron, in machines having a plurality of movable molds, and means for feeding molten material into the molds. In these prior machines, the castings were in most instances removed from the molds by inverting the molds and depending upon gravity to cause the castings to drop out. This method of removing the castings was found to be inefiective and it was then attempted to positively remove the castings by providing an opening in each of the molds, placing a movable stem in the opening, and providing means for automatically moving the stem at a predetermined time in order to gradually push the casting from the mold. These ejector devices were found to be impractical due to the fact that the material flowed into the crevices between the stem and the adjacent portion of the mold, causing the casting to adhere to the mold to a greater extent than without the use of an ejector. With the present invention a sharp blow is delivered against each mold after the same has been filled with metal and tilted, this blow serving to effectively release the casting from the mold.

A clear conception of an embodiment of the invention may be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or similar parts in the various views.

Figure 1 is a transverse vertical section through a fragment of a casting machine having the invention applied thereto.

Fig. 2 is a top view of a fragment of a casting machine having the invention applied thereto.

Fig. 3 is a diagrammatic side elevation of an automatic casting machine.

The casting machine comprises essentially a series of molds 1, an endless conveyer or chain 2, conveyer guiding and actuating sprocketso, and means for feeding molten metal into the molds 1, this means being disclosed as a ladle 3, see Fig. 8. The molds l are secured to the links of the chain 2 and are movable in a clockwise direction as viewed in these figures, by means of the sprockets 5. The chain 2 carries anti-friction rollers 19 which engage the sprockets 5 at the ends of the machine, and the guiding rails 18 at intermediate portions thereof. The front sprocket 5 adjacent the ladle 3 is rotatably supported by means of a shaft 20 mounted in suitable bearings on the main frame 10. The rear sprocket 5 at the opposite end of the machine is rotatably sup ported by means of the driving shaft 11 mounted in suitable bearings 21 on the main frame 10.

The gear 6 is secured to the driving shaft 11 and meshes with a pinion 7 secured to the cam shaft 8. The cam shaft 8 is mounted in bearings 22 supported by the frame 10 and carries a cum 9 at a portion thereof intermediate the bearings 22. When the driving shaft 11 is rotated in a clockwise direction as viewed in Fig. 1, the pinion 7 and cam 9 are rotated in an anticlockwise direction. The ears of the cam 9, as disclosed, are two in number and are intermittently engageable with the tappet 14 carried bythe stamp rod 13. The stamp rod 13 is slidably mounted in a front bearing 12 and a rear adjustable bearing 16 mounted upon the frame 10. The rear bearing 16 is adjustable relatively to the frame 10 and besides serving as a bearing for the rod 13, provides an adjustable seat for one end of the helical compression spring 15. The opposite end of the spring 15 engages a stop plate 23 adjacent the tappet 14:. The stop plate 23 is engageable with stops 2% secured to the frame 10, to limit the travel oi the plate. The bearing 10 may be locked in adjusted position relatively to the frame 10 by means of a locking set screw 17. The

stamp rod 18 is mounted in a substantially horizontal position and the driving relation between the gear (5 and pinion T is such that the ears of the cam 8) will become etl'ective in moving the rod i3 in a direction toward the ladle at equal intervals. The molds l are provided with projecting bosses 4 so located and timed that a boss -l will be brought into axial alinement with the rod 13 each time an ear of the cam l) releases the tappet ll. W hen an ear of the cam 5) releases or passes out of engagement with the tappet ll, the spring 15 which has been previously compressed by the cam ear, is suddenly released and becomes elfective in moving the rod r3 rapidly forward. is the rod i3 is projected toward the adjacent mold 1, it delivers a sharp blow against the boss -i-.

During normal operation of the machine, the molds l are successively moved past the ladle by means of the endless conveyer or chain The molten material is fed into the molds l at the ladle and cools as the molds advance toward the rear end of the machine. lVhen the filled molds reach the rear sprocket 5, they are automatically tilted. llhile the molds are in tilted position, the stamp rod 13 delivers a blow against the boss l of each mold and effectively discharges the casting therefrom.

It will be noted that by properly designing the driving mechanisms for the cam 9, and maintaining a phase relation between the cam 9 and the chain driving sprocket 5, the movement of the rod 13 can be timed to automatically deliver blows against the bosses l while the molds a? disposed substantially vertically. "he molten material may be continuously led to the molds 1 from the ladle 3, and due to the length of the machine, will have sulliciently set by the time it reaches the opposite end of the machine, to permit removal oi the castings. lVhile the device is especially applicable to machines for casting molten metal, such as copper and iron, the same may be applied. to the casting of other materials.

It should be understood that it is not desired to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

it is claimed and desired to secure by Letters Patent,-

l. I n combination, a mold having a casting discharge opening, means for feeding molten material into said mold, and means for delivering a blow against said mold, said blow-delivering means being located remote from said discharge opei'iin :3. ln combination, a mold having an inlet and discharge opening, means for feeding molten material into said mold through said opening, and means for delivering a blow against a portion of said mold. remote from said opening.

In combination, a mold having a discharge opening, means for feeding molten material into said mold, and means for delivering a blow against said. mold on the side thereof opposite said discharge opening.

-l-. in combination, a mold, means for 'leeding molten material into said mold, mechanism or tilting said mold, and means for delivering a blow against said mold substantially above the mid portion thereof when in tilted position, whereby an upper portion oi said material. is freed to swing by gravity away from said mold. when the same is turther tilted.

5. in combination, a mold, means for feeding molten material into said mold, carrying mechanism for said mold, and means for delivering a blow against said mold in a direction away from said mechanism.

in combination, a mold, means for ding molten mat rial into said mold, a

sprocket for changing the angular position of said mold, bearings for said sprocket, and means for delivering a blow against said mold in a direction away from said sprocket bearings.

T. In combination, a mold having a dis charge opei'iing, means for feeding molten material into said mold, and means for delivering a bio against said mold substantially above the mid portion thereof and substantially in the direction oi? discharge of material trom said mold.

in testimony whereof, the signature of the inventor is atlixed hereto.

HENRY ALINDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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