SU916050A1 - Excess sand cutting off mechanism - Google Patents

Description

The invention relates to foundry and can be used in equipment for automatic molding lines.

Known devices for removing excess molding sand, including moving in the vertical plane of the yoke, on which the milling drum · and the mechanism of its self-alignment on the height of the flask [1].

A device for removing excess molding sand containing a traverse, a base, a carriage with a piston drive and knives is known [2].

The disadvantages of the device is that for cutting off excess mixture it is necessary to stop the flask, which leads to a decrease in productivity. Efforts from. cuttings are transmitted directly to the rollers of the transport roller table and cause them. premature wear.

The purpose of the invention is to increase productivity and reliability.

To achieve this goal, the mechanism for cutting off excess mixture containing the traverse, the base, the carriage with piston2

nevym- drive and knives, is provided with a trailing abutments disposed on both sides of the flask at the level of its middle zone, the supporting rollers attached to the cross beam and intended for the interaction with the base ⁵ Wii, and the cutting edges of the knives in opposite directions and, together with the stops act on the half form

FIG. 1 shows a diagram of the mechanism

, 0 cutting off the excess mixture, front view; in fig. 2 - the same, side view.

The mechanism comprises cutting excess mixture yoke 1 with closing abutments 2, rollers 3, a base 4, a cylinder 5, a carriage 6 with fixed knives ¹⁵ thereon 7, 8. The support rollers flask 3, located on the plate 1 serve to move the cutting mechanism synchronously with the flask and parallel to its movement. The locking lugs 2 are designed to relieve loads from the cutting process.

Flask 8, made by molding the mixture enters the mechanism for cutting off the excess mixture, which, through the contact of the support rollers 3 and guides

3

916050

The base 4 begins to move, synchronous and parallel to the movement of the flask. At the same time, the cylinder 5 is turned on, moving the carriage 6 containing the knives 7, perpendicular to the direction of movement of the flask 8. The cutting force is perceived by the closing lugs 2, which interact with the knives 7. During the flashing time together with the cutting mechanism, the path is 2/3 of the length flask, cutting off the excess mixture occurs, and for the rest of the time the mechanism returns to its original position with the help of support rollers 3, and the cycle repeats.

Thus, the flask does not stop for the operation of cutting the excess mixture, and this gives a significant increase in productivity. In this case, cutting forces are perceived as closing stops, which leads to a decrease in the wear of transport roller tables and an increase in their service life.

four

Claims (1)

Claim The mechanism for cutting off the excess mixture containing the cross bar, base, carriage with a piston drive, knives for cutting ₅ excess mixture, characterized in that, in order to improve performance and reliability of work, it is equipped with locking lugs located on both sides of the flask at the level of its middle belt , supporting rollers attached to the traverse and designed to interact with the base, and the cutting edges of the knives are directed in opposite directions.