SU117633A1 - Apparatus for producing molds by pressing - Google Patents

Description

Usually used for the production of casting molds by pressing machines require the use of a number of manual operations: the installation of molding, feeding and dosing of the molding sand, the removal of the half-form and others. The use of manual operations reduces the productivity of the machine. The design of the molding press machine does not have the indicated drawbacks, since all operations in it are mechanized. In the proposed device, double-sided model plates are placed in a cylinder associated with the hopper, in which the mixture is pressed by horizontally moving pistons after a portion of the mixture arrives from the bunker. Such a design of the molding machine allows for the elimination of manual operations.

The drawing shows a molding machine in a schematic sectional view. The machine consists of a hopper 1 for molding ground; magazine for model plates 2, sub-model plates 3 inserted into the shop; a cylinder 4 forming an extrusion chamber with an opening in the upper part for admitting molding sand from the hopper; piston 5; cylinder 6; the removable mechanism 7 and the conveyor car 8. The machine works as follows: the magazine with the set of model plates 2 is put into an operating position, as shown in the drawing. After the sub-model plate 3 is in its working position, the cylinders 4 shift and abut against the sub-model plate 3. Then the pistons 5 are mixed into the rear position and open the hole in the cylinder 4 through which the molding mixture enters. The dosage of the molding mixture is made by adjusting the distance between the model plate 3 and the piston 5. Once the mixture has entered the cylinder 4, it is pressed by the piston 5 with a force of 30 kg / cm.