SU1585064A1 - Die-casting mould - Google Patents

Abstract

The invention relates to foundry, in particular to injection molding. The purpose of the invention is to simplify the design and increase the reliability of the operation of the mold. The mold contains movable 1 and fixed 2 half-molds with fastening plates 3 and 4, holders 5 and 6, pushing plates 7 and 8 with pushers 9 and 10 and counter pushers 11 and 12, respectively. In the holder 5 and in the plate 8, rod guides 13 and 14 are fixed with flats 15 and 16 located opposite each other. The cavity formed by the flats is connected to the gating system 20 by the channel 17, through which the melt flows during the pressing. The solidified melt connects the guides 13 and 14 with each other, i.e. connects the ejection plate 8 of the stationary half-mold 2 with the movable half-form 1. When the mold is opened, the plate 8, following the half-form 1, pushes the casting out of the stationary half-form 2. The plate 8 stops at the cage 6 and the guides 13 and 14 cut off the metal between the flats 15 and 16. Plate 8 is detached from the movable mold half 1. Further operation of the mold is carried out in the traditional way. The use of the melt to join the pushing out plate 8 of the fixed half-mold with the movable half-form and the subsequent separation of these elements by cutting the melt make it possible to refuse the corresponding mechanism or drive, which greatly simplifies the design of the mold and increases the reliability of its operation. 1 il.

Description

The invention relates to foundry, in particular to injection molding.

The purpose of the invention is to simplify the design and increase the reliability of the operation of the mold.

The drawing shows the mold after pouring the melt.

The mold contains movable 1 and fixed 2 half-molds with fastening plates 3 and 4, holders 5 and 6, pushing plates 7 and 8 with pushers 9 and 10, and knobs 11 and 12, respectively. In the case 5 of the movable half-form 1, a rod-shaped guide 13 is fixed, and in the ejector plate 8 of the fixed half-form 2 - a different rod-shaped guide 14. On the rod-side guides 13 and 14, flats 15 and 16 respectively are arranged opposite each other, and A cavity 18 is formed in the cavity formed by the flips. A rod 18 is installed in the movable half-form, and a sprue bushing 19 in the fixed half-form 2, which is connected with the shaping cavity through the gating system 20.

The mold works as follows.

When pressed into the mold of the melt through the gating system 20, the forming cavity is filled, and through the channel 17, the cavity formed by the flats 15 and 16. The solidified melt connects the rod guides 13 and 14 between them. As a result, the ejection plate 8 of the fixed half-form 2 is connected to the mobile half-form 1.

When opening the mold, the ejection plate 8 follows the moving half-form 1 and the pusher 10 extends

0

5 JQ, „O

Q

55

nods the casting from the fixed half-mold 2. The ejection plate 8, having reached the cage 6, stops and the mobile half-form 1 continues its movement, while the rod guides 13 and 14 are shifted relative to each other and cut off the melt that has hardened in the cavity between the flies 15 and 16 . The ejection plate 8 is separated from the movable half-form 1. The molding is ejected from the movable half-mold in the traditional way, and the pushing plates 7 and 8 are returned to their original position by the counter-tappets. After cleaning the bald spots 15 and 16, the mold is ready for operation.

The width of the flat H is recommended to choose from the following ratio: H (1.05-1.10) P / C1, where P is the force of resistance to movement of the ejection plate when removing the casting from the fixed half-form; 1 - length of flats; 1 - the resistance of the material of the casting to cut.

The gap between the rod guides h should be selected according to the recommendations to the depth of the ventilation ducts for the respective melt to be poured.

Claims (1)

The use of molten melt to join the ejection plate of the stationary half-mold with the movable half-form and thereby ensure the ejection of the casting from the stationary half-form greatly simplifies the design of the mold by eliminating complex bonding mechanisms and, consequently, increases the reliability of the mold. Invention Formula Die casting mold containing moving mold 5 15850646 with a mounting plate, clip, plate plate mold work, it is supplied, pushers, stationary half-extra-extra rod direction 1c with fastening plate, yoke, plates with flat, fixed in yoke pushers with a fixed half-form fixed in them, while flats The pivotal rail with the flap is located one against the other, and and the gating system, distinguishing-cavity, formed by the flips, connecting with the fact that, with the aim of simplifying the yen with the gating system, neither the design nor the increase in reliability