DE441535C - Device for pouring out bearing shells - Google Patents

Description

Device for pouring out bearing shells. Subject of the invention is a device for filling passenger and freight car bearings with bearing metal. Various casting devices of this type are already known that had to do with them but the sprue is removed by means of a chisel and hammer, saw or by breaking it off will. This removed the hard metal crust on the face of the bearing is just as important as on the tread, damaged. In the present invention a small turn of the sprue makes the metal sprue smooth from the Bearing separated, but at the same time the finished cast bearing was excavated. Another feature of the invention is that the rear retaining plate of the bearing is also lifted with this, but in the old position after removing the bearing slides back.

By means of the device explained in more detail with reference to the drawing 5o percent time is saved in the manufacture of bearings.

Fig. I shows the cross section through the casting device; Fig. A shows the longitudinal section; Fig. 3 shows the plan; Fig. 4. shows the sprue shear device. The device consists of the two-part casting core a and b. In the lower part b, two fitting pieces c are used, which are pressed outwards by springs (not shown) and ornaments are held in place by grooves and pins. The pouring leg is fixed immovably on the plate d by retaining screws.

The sprue e, at the same time shear device and lever for the lifting device, is' in two parts and is held together by the conical socket f. At the .shearing device and the conical socket are two arms each for loosening and lifting. 1r_ the shearing device the sprues that are tapered after the casting core are located. and guide pins h and i, the sprue is firmly guided to the end face of the core. The guide groove k is widened downward so that the sprue upon rotation can be preferred to the cutting device in the direction of the arrow.

Under the plate d is the crankshaft 1, which engage with their lugs in those of the shearing device. Between the shaft 1 and the plate d , a plate n provided with about six pins is provided, which is used to lift off the finished bearings.

The fitting piece o for sealing is attached to the rear face in such a way that that a conical surface, held by a set screw p, after lifting the finished bearing automatically slides back into the old position.

The guide pieces q, which are fixed immovably on the plate d hold the bearing shell r in position just above the center of the core.

The work process.

The bearing shell r is placed over the casting core. With a light Pressure on the bearing shell, the two fitting pieces c under the action of each other acting edges pressed inwards until the shell lies on plate d. By means of the screw p, the fitting piece o is pressed against the bearing shell and the shearing device a pressed and held. The guide pieces q prevent sideways shifting the bearing shell.

During casting, the metal passes through the sprue and the sprues g into the bearing shell. After the metal has solidified, the conical bush f is lifted off. A blow or pressure on the lever arm of the sprue rotates part e1 of the sprue in the direction of the arrow. The sharp edges of the sprue shear off the sprue. the end face of the bearing shells smoothly. The free after acceptance of part e2. The sprue that has become falls easily out of the sprue onto the casting table or into the metal collecting box. The parts' of the sprue is now pulled forward so far that the bearing is free at the end face. A guide pin s mounted in the guide pin i limits the movement. As the sprue is turned further, the plate n with the six pins is pushed upwards with the six pins by the shaft l against the bearing shell and the fitting piece o, transferred through the "lugs". Thus, both parts are released and lifted. After the bearing shell has been removed, the sprue is moved back to its original position, causing the eccentric to rotate downwards and the plate with the pins and the rear fitting slide back.

Claims (1)

PATENTANSPRUCI3: Device for clamping and pouring out bearing shells, characterized in that the pouring funnel is rotatable and at the same time for Shearing off the sprue and lifting the poured bearing shell from the casting core serves, the end plate (o) is raised to complete the form with and after Acceptance of the finished bearing shell falls back into the casting position.