US 12,257,621 B2
Molding system
Ruggero Pederzoli, Bedizzole (IT)
Assigned to MECCANICA PI.ERRE S.R.L. DI PEDERZOLI RUGGERO & C., Bedizzole (IT)
Appl. No. 17/928,944
Filed by MECCANICA PI.ERRE S.R.L. DI PEDERZOLI RUGGERO & C., Bedizzole (IT)
PCT Filed Sep. 28, 2021, PCT No. PCT/IB2021/058846
§ 371(c)(1), (2) Date Dec. 1, 2022,
PCT Pub. No. WO2022/074510, PCT Pub. Date Apr. 14, 2022.
Claims priority of application No. 102020000023728 (IT), filed on Oct. 8, 2020.
Prior Publication US 2023/0234124 A1, Jul. 27, 2023
Int. Cl. B22D 17/26 (2006.01); B22D 17/22 (2006.01); B22D 17/32 (2006.01); B22D 18/04 (2006.01)
CPC B22D 17/263 (2013.01) [B22D 17/2236 (2013.01); B22D 17/32 (2013.01); B22D 18/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A molding system for a low-pressure light alloy casting plant comprising a light alloy casting-injection system, wherein the molding system extends in height along a main axis and comprises a base region positioned at a bottom, in which the light alloy casting-injection system is at least partially housable, wherein the molding system comprises a mold comprising a lower half-mold and an upper half-mold, wherein the molding system further comprises:
a lower fixed plate, on which the lower half-mold is housed, wherein the lower fixed plate and the lower half-mold are fluidly connectable to the light alloy casting-injection system;
a movable plate on which the upper half-mold is housed;
an upper fixed plate, positioned at a top of the movable plate;
a movement group suitable for moving the movable plate along the main axis between a working position, in which the mold is closed, and a multiplicity of raised positions in which the upper half-mold is separated from the lower half-mold, the movement group comprising:
an electric drive motor housed on the upper fixed plate; and
transmission members operatively connected to the electric drive motor and to the movable plate suitable for transforming rotary motion of the electric drive motor into translational motion;
a casting ejection group, housed on the movable plate, comprising:
an electric ejector motor;
ejection members operatively connected to the electric ejector motor, to the movable plate, and to the upper half-mold, the ejection members being movable by the electric ejector motor in an ejection position in which a casting is detached from the upper half-mold;
a command unit, operatively connected to the movement group and to the casting ejection group, suitable for commanding operation of the electric drive motor and of the electric ejector motor; and
a casting collection group comprising:
a collection plate suitable for translating along a collection axis transversal to the main axis; and
an electric collection motor operatively connected to the collection plate to move the collection plate to an advanced position, in which the collection plate is positioned at the main axis, and to a retracted position, in which the collection plate is spaced apart from the main axis.
 
4. A molding system for a low-pressure light alloy casting plant comprising a light alloy casting-injection system, wherein the molding system extends in height along a main axis and comprises a base region positioned at a bottom, in which the light alloy casting-injection system is at least partially housable, wherein the molding system comprises a mold comprising a lower half-mold and an upper half-mold, wherein the molding system further comprises:
a lower fixed plate, on which the lower half-mold is housed, wherein the lower fixed plate and the lower half-mold are fluidly connectable to the light alloy casting-injection system;
a movable plate on which the upper half-mold is housed;
an upper fixed plate, positioned at a top of the movable plate;
a movement group suitable for moving the movable plate along the main axis between a working position, in which the mold is closed, and a multiplicity of raised positions in which the upper half-mold is separated from the lower half-mold, the movement group comprising:
an electric drive motor housed on the upper fixed plate; and
transmission members operatively connected to the electric drive motor and to the movable plate suitable for transforming rotary motion of the electric drive motor into translational motion;
a casting ejection group, housed on the movable plate, comprising:
an electric ejector motor;
ejection members operatively connected to the electric ejector motor, to the movable plate, and to the upper half-mold, the ejection members being movable by the electric ejector motor in an ejection position in which a casting is detached from the upper half-mold; and
a command unit, operatively connected to the movement group and to the casting ejection group, suitable for commanding operation of the electric drive motor and of the electric ejector motor,
wherein the lower half-mold comprises a plurality of slider elements positionable in a closed half-mold position and in an open half-mold position, wherein the molding system comprises a lower half-mold opening-closing group comprising a respective electric slider motor for each slider element of the plurality of slider elements.
 
7. A molding system for a low-pressure light alloy casting plant comprising a light alloy casting-injection system, wherein the molding system extends in height along a main axis and comprises a base region positioned at a bottom, in which the light alloy casting-injection system is at least partially housable, wherein the molding system comprises a mold comprising a lower half-mold and an upper half-mold, wherein the molding system further comprises:
a lower fixed plate, on which the lower half-mold is housed, wherein the lower fixed plate and the lower half-mold are fluidly connectable to the light alloy casting-injection system;
a movable plate on which the upper half-mold is housed;
an upper fixed plate, positioned at a top of the movable plate;
a movement group suitable for moving the movable plate along the main axis between a working position, in which the mold is closed, and a multiplicity of raised positions in which the upper half-mold is separated from the lower half-mold, the movement group comprising:
an electric drive motor housed on the upper fixed plate; and
transmission members operatively connected to the electric drive motor and to the movable plate suitable for transforming rotary motion of the electric drive motor into translational motion;
a casting ejection group, housed on the movable plate, comprising:
an electric ejector motor;
ejection members operatively connected to the electric ejector motor, to the movable plate, and to the upper half-mold, the ejection members being movable by the electric ejector motor in an ejection position in which a casting is detached from the upper half-mold;
a command unit, operatively connected to the movement group and to the casting ejection group, suitable for commanding operation of the electric drive motor and of the electric ejector motor; and
heat shields for protecting the electric motors from heat produced by the light alloy casting-injection system, wherein the heat shields comprise primary shields positioned on the lower fixed plate, on the movable plate, and on the upper fixed plate.