RU2002551C1 - Apparatus for making casting cores of foamed sands, being pressed in heated core boxes - Google Patents

Description

filling the metering chamber increases its accuracy.

Figure 1 shows the proposed installation; figure 2 is a section aa in figure 1; in Fig.3 - node I in Fig.1 (device for fixing the shaft with blades); Figures 4 and 5 are a sectional view BB in Figure 2 (two embodiments).

The installation consists of a support structure 1. on which a mixer 2 with a drive 3 is mounted. The mixer 2 comprises a housing 4, a shaft 5 with blades 6, extension 7 and blades 8, a shutter 9 and a shutter drive 10 9. The metering chamber 11 is adjacent to the bottom of the housing 4 including stationary 12 and moving 13 parts with a nozzle 14, a shutter 15 and an actuator 16 of the shutter 15,

The movable part 13 is moved by means of actuators 17, and the volume of the metering chamber 11 is adjusted by means of adjustable stops 18.

On the supporting structure 1, a two-way cylinder 19 is installed, on the rod of which a press plunger 20 is fixed. Between the drive 3 and the shaft 5 of the mixer 2 there is a device 21 for fixing the shaft 5 in a predetermined position, including a friction clutch 22, a disk 23 with locking holes 24, a latch 25 and an actuator 26 of a latch 25. The friction clutch 22 serves to protect the actuator 3 from breakage. In the extension 7 of the shaft 5, a window 27 is made for the passage of the press plunger 20. A slide 29 is integrated in the core box 28.

The design of the shaft 5 can be performed in two versions:

 option - each extension 7 has only one window 27 (figure 4).

Option I - extension 7 has two or more windows 27 (Fig. 5).

The described installation works as follows,

In the mixer 2, a foam mixture is prepared. The actuator 10 moves the shutter 9, opening the foams to the metering chamber 11.

The drive 3 of the mixer 2 is disabled, and the latch 25 under the action of the drive 26 of the claims

Claims (2)

1. INSTALLATION FOR MANUFACTURE OF CASTING RODS FROM FOAM MIXTURE WITH PRESSING IT IN A HEATED ROD BOXES. Containing supporting structure, blade mixer, consisting of a drive, a housing and a shaft with vanes, at least one metering chamber adjacent to is caught in one of the holes 24 of the disk 23, fixing the shaft 5 with vanes 6 and 8 in a position in which the axis of the window 27 is aligned with the axis of the press plunger 20. The shutter 9 is closed. After that, the drive 19 makes the press plunger 20 make the first move, passing through the window 27 to the upper level of the shutter 9. The metering chamber 11 from the mixer 2 is opened. The shutter 9 is opened and, at the same time, the actuator 17 lower the movable part 13 of the metering chamber 11 is pressed, pressing the nozzles 14 against the shaft box 28, and the actuator 16 opens the shutter 15. Press plunger 20 under action the actuator 19 makes a second stroke, enters the batching chamber 11 and squeezes the foam mixture out of it into the heated core box 28. The gate 29 moves, cuts off the core box 28 from the batching chamber 11, the press ram 20 returns to the intermediate position, and the shutter 15 closes the chamber 11 from the bottom dosing. The drive 17 raises the movable part 13 with nozzle 14. In this case, the volume of the metering chamber 11 is fixed by the position of the adjustable stops 18. The shutter 9 moves to its original position, the compartment of the metering chamber 11 from the mixer 2, the press plunger 20 returns to its highest position, the latch 25 is pulled out of the hole 24 of the disk 23, the actuator 3 is turned on, and the mixer starts to mix the foam mixture again. The core box filled with the foam is removed from the forming position, the next empty core box comes in its place, and the installation cycle is repeated. The invention allows substantially increase the range of regulation of the volumes of dosing chambers and expand the technological capabilities of the equipment. In addition, the tasks of increasing the accuracy of the set of dose of the foam mixture are cardinally solved. at as a result, the quality of the cores and castings is improved. fifty (56) Copyright certificate of the USSR No. 1490804, cl. B 22 C 13/16, 1987. a mixing mixer, and a pressing drive with a press plunger, characterized in that, in order to expand the technological capabilities of the equipment and improve the quality of the rods, it is equipped with a device for fixing the shaft with blades in a predetermined position, while the shaft with blades is made at least with one extension having a window and a metering chamber made of two parts, one of which is adjacent to the lower part of the mixer body, and the other is mounted with the possibility of vertical movement relative to the first, the pressing drive consists of 5 holes and a clamp with a drive, a two-way cylinder. 2. Installation according to claim 1, characterized in that. in order to ensure the reliability of the bot, the device for fixing the shaft with the blades consists of a friction clutch, di holes and locking mechanism with drive, 2. Installation according to claim 1, characterized in that. in order to ensure reliability in operation, the device for fixing the shaft with blades consists of a friction clutch, a disk with eleven I Fig i YU Figure 1 26 5 B Fig.Z Figl 5-6 FIG. 5