SU608605A1 - Pressure mould for injection-die casting of work with side holes - Google Patents

Description

one

The invention relates to foundry, in particular to the manufacture of parts and products by the method of injection molding.

Molds for casting under pressure castings with side holes 1 are known.

Also known are mold designs for injection molding, consisting of fixed and stationary half-molds, the first of which includes a punch plate, an insert fixed in the intermediate plate, an ejector plate, a side pin fixed in the slide, and a slanted finger interacting with hole in the slider {2.

A known die casting mold is characterized by time-separated removal processes of the shaping side rods and removal of the finished product. This leads to the irrational use of the length of the ejector plate stroke. In connection with this, the duration of the full cycle of operation is increased, the productivity of the injection molding machine is reduced.

The aim of the invention is to reduce the duration of the process of extracting the casting from the mold.

For this, the die-casting mold punch plate is mounted to be linearly movable relative to the liner and connected by means of a pushing plate, and an inclined finger is fixed in the intermediate plate.

This ensures that the process of removing the finished product from the liner is combined with the process of removing the side rods that define the radial holes in the product. The final process of removal of the finished product from the movable half-form is carried out during the reverse course of the pusher plate, together with the joints connected to it.

FIG. 1 shows a mold for injection molding, a general view; in fig. 2- one of the longitudinal sections of the mold,

which has a side bar that defines a radial hole in the finished product.

The mold for casting contains a movable coupling half, including the rear flange

1, which, with the aid of connecting screws 2 and a cup 3, is connected to the plate 4, as well as an intermittent plug 5 with an insert 6 secured therein.

Claims (2)

The pushing system for removing the finished product is mounted in the inner bore of the glass 3. The pusher 7 is rigidly connected with the pusher plate 9 and the plate 10 by means of screws 8. To eliminate possible distortions, the centering of the pusher 7 in the rear flange 1 is carried out using the guide sleeve 11 and ejector plate 9 with guiding columns 12 - with the help of sleeves 13. Guiding columns 12 are fixed in special bores of the rear flange 1 and abut their upper ends against plate 4, creating I increase the stiffness in the process of closing the mold. The punch plate 14 is installed with the possibility of linear movement relative to the liner 6 and is connected rigidly with the pushing plate 9 and the plate 10 with the help of t 15. The helical springs 16 installed between the auxiliary ejector plate 10 and the plate 4 are designed to return the ejector system to its original position . The centering of the plate of the punch 14 during the removal of the finished product is carried out using guide columns 17 installed in the intermediate plate 5, and sleeves 18 and 19 mounted in the plate of the punch 14 and in the sprue plate 20. After the SXG, the screws 21 are connected with the front flange 22, thus forming a fixed half-mold of the mold. The litnikovy sleeve 23 is pressed between the sprue plate 20 and the front flange 22. To remove the sprue, a mold is provided in the mold, which consists of a puller 24 The bore of the pusher 7 and spring-loaded using a cylindrical spring 25. The mold is cooled by fittings 26, through which coolant is circulated through an annular groove made in the body of the runner plate 20. To design the side, radially holes in the product The lateral rod 27, which is engraved in the slider 28, is movably connected with the inclined finger 29 through a hole in the latter, which is fixedly mounted in the intermediate plate 5. The mold for the lit l under pressure as follows. After filling the decorating cavity bounded by the liner 6 with a bore in the plate of the punch 14 and the gating plate 20, i.e., after the direct casting process is completed, the mold is opened along the parting plane between the movable and stationary half-molds, i.e. along the plane of contact of the plate of the punch 14 and the gating plate 20. In the process of this disclosure, the gate with the iodoed gating channels is removed from the sprue bushing 23. At the same time, the finished product is removed from the liner 6 With the help of the pusher 7 and associated parts of the ejector system; the main and auxiliary plates 9 and 10, tg 15 and the punch plate 14, which rests upon the finished product as it moves. In the course of this movement, the pliers 14 together with the relatively fixed finished product remove the side rods 27. This process of removing the side rods 27 is carried out by the relative movement of the sliders 28 connected with them but the inclined pin 29. In this case there are cases of lateral holes forming both perpendicular to the nasal pressure and iodine by some angle to this axis (see Fig. 2). Due to cooling and the shrinkage associated with this, there is some reduction in the basic dimensions of the finished product. On the one hand, this facilitates the subsequent removal of the product from the cavity of the plate of the punch 14, and on the other hand, allows for the final removal of the product, which takes place during the reverse movement of the movable mold half, i.e. during the process of closing it. When this happens, the internal surfaces of the product stop against the end surface of the insert 6, and due to the relative movement of the plate of the plug 14 of the node by the action of the springs 16, the final removal of the casting from the mold is carried out. At the same time, the ejector system returns to its original position. The invention makes it possible to reduce the duration of the process of extracting the casting with the side openings of the mold form by combining the process of removing the product with the removal of the side styling rods; to increase the productivity of staff by reducing the duration of the full cycle of casting the product under pressure. The invention of the mold for casting under pressure castings with side holes, containing a movable mold, including a punch plate, an insert fixed in the intermediate plate, an ejector plate, a lateral rod fixed in the slide, an inclined spine interacting with the hole in the slider and fixed half mold, characterized in that, in order to reduce the duration of the process of extracting the casting from the mold, the punch plate is installed with the possibility of linear movement relative to the liner and is connected by means of pushed out the plate, and the inclined finger is fixed in the intermediate plate. Sources of information taken into account in the examination 1. USSR author's certificate №477855, cl. B 29C 5/00, 1975. 2. Die casting. Ed. Ya. I. Vinberg, M., “Mashgiz, 1962, p. 219-223. 2 / Cpui.z