Top blow flaskless molding method, a process recently introduced by the SINTO Group companies.
The process illustrated below combines the best characteristics of other SINTO molding machines. The molding cycle is of 24 seconds, 150 cycles/hour.
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The top blow method starts with the flask in the horizontal position, where it is introduced the pattern plate between the cope and drag flask.
The flasks are closed.
The flask rotates 90 degrees, so that they are placed under the blow tank.
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The sand is blown by top and the flasks are filled up.
Then, the sand enters the squeeze process.
The flask rotates again 90 degrees on the other side, coming back to the horizontal position. The flasks are opened and the pattern plate is removed. In this occasion, the sand is placed in the blow tank .
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The drag flask slides in direction to the operator, making easy the core setting.
The darg flask returns to the previous position, and the mold closes again.
The mold is extracted from the flask and is transported to the pouring line.
The method of top blow uses the flask in the vertical position to allow the uniform entrance of the sand by the gravity forces and of the SINTO blow system, before the squeeze.
These factors allow the use of a wider range of sand property as compared to the previous machine of blow. In addition to fast cycle and advanced molding method, the top blow molding machine has the following characteristics:
- It does not spread sand.
- It does not require filling frame to the flaskless mold.
- Variable height of the cope and drag molds, independent.
- Control and diagnostics through the display.
- Fast change of the pattern plate.
The plate is kept in the position through 2 pins and can be changed in a short time space of about 30 seconds.
The SINTO flaskless machine offers (2) two processes (top and bottom blow, and top blow).
The variety of (6) six sizes, from the smaller 14”x19”x5/8”x5/8” up to the biggest 32”x32”x11/14”x11/14”.
The variety of (10) models offers a wide range choice of the machine suitable to customers’ needs.
