SU715217A1 - Apparatus for pressure-casting - Google Patents

Description

(54) DEVICE FOR MOLDING UNDER PRESSURE

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the pressure is provided with a lifting mechanism 14 of the crucible 1 and a pressing cylinder 15. In the cavity 1G, forming the limiting shoulder clamps 7 with a hole in the fixed plate 1O, an electric heater 17 is installed.

The device works as follows.

In the initial position of pressups, the plunger 5 is retracted to the extreme right position, the locking valve 6 cuts off the forming cavity of the mold 9 from the pressing chamber 4. Crucible 1 with the lifting mechanism 14 is lowered, while the metal level in the crucible is below the pressing chamber 4 and the position The crucible is monitored by an electrical contact sensor 12 of the minimum metal level. The electrocontact sensor 13 of the maximum metal level is set to a predetermined amount of the metal dose to be filled.

At the beginning of the cycle, the lifting mechanism 14 raises the crucible 1 and rotates it together with the outlet channel 3 and the pressing chamber 4 around the longitudinal axis of the latter until the liquid metal touches the electrical contact sensor 13 of the maximum level. The metal from the crucible 1 enters the pressing chamber 4 through the exhaust channel 3, and after stopping the lifting mechanism 14 by command, the electrical contact sensor 13 of the maximum level in the crucible 1 and the pressing chamber 4 is set to the same level of metal. Press cylinder 15 and press plunger 5 press metal into mold 9. Crucible 1 returns

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to its original position, the optical contact sensor 12 is the minimum level of the metal.

Removing the casting and returning it to its original position is carried out in a known sequence. The magnitude of the injected dose of metal is regulated by the distance in height between the electrocontact sensors 12 and 13. The limiting cover 11 fixes the pressing chamber 4 from peremadeniy along its longitudinal axis.

The proposed injection molding device allows you to adjust

15 the magnitude of the metal dose to be filled in without changing the pressing chamber, which leads to an increase in labor productivity.

Claims (1)

Invention Formula A device for injection molding, containing a movable and fixed plate, on which the molds are installed, a horizontal pressing chamber with a pressing plunger, a heated crucible with a sensor and a metal level and a pressure channel rigidly connected to the pressing chamber, which is so that, in order to regulate the magnitude of the pour, the metal dose, the crucible and the pressing chamber are rotatable around the longitudinal axis of the pressing chamber. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 38147О, class. B 22 D 17 / ZO, 1969.