SU1748930A1 - Mould for die casting - Google Patents

Abstract

Use: getting castings with undercuts. SUMMARY OF THE INVENTION: The mold includes a rod 3 mounted for axial movement, split forming inserts 4 with inclined shaping elements, casting slider 6 fixed to support plate 7. All inserts are interconnected by a sliding frame 9. When removing the casting, support plate 7 from the pusher of the machine moves the jogger 6 and liners 4. At the same time, removal of the rod from the rod and release of the liner from the undercuts in the casting takes place. When the liners are moving, the frame 9 moves apart and locks the liners in the open position. When the base plate 7 is closed, the collider returns with the PusherTadyshi pusher — when they come in contact with the fixed half-form 1. 1 Cp f-ly, 6 ill. (L-h Ј C yu SA)

Description

The invention relates to foundry, in particular, to injection molding of castings with undercuts, and can be used in precision casting on smelted models and the production of plastic products.

The purpose of the invention is to increase reliability in operation.

Fig. 1 shows the mold in the closed state at the moment the metal is pressed in; in fig. 2 shows section A-A in FIG. one; in fig. 3 - mold in the open state at the stage of impacting of the casting; in fig. 4 is a view B in FIG. 3; in fig. 5 shows section B-8 in FIG. four; in fig. 6 - section G-Y in FIG. 1

The injection mold contains a fixed mold 1, a movable mold 2, including rod 3, mounted for axial movement, detachable forming inserts 4 with inclined guide elements 5, and a pushbutton

6 castings fixed to base plate

7 with rods 8 Forming liners 4 are rigidly interconnected by a sliding frame 9. To facilitate installation of the sliding frame 9 into the mold in the forming liners 4, fixed plates 10 with openings for the frame Base 7 are connected through the rods 8 to the machine pusher and has the ability to interact with detachable forming inserts 4. Detachable forming inserts 4, pusher 6 and rod 3 have conical surfaces in the place of their interaction, hanging (Fig. 1). In fixed half-form There are four protrusions with a height of 1.5 mm and a width of 10 mm with supporting surfaces a (Fig. 6) in order to prevent dirt from entering the forming cavity when the mold is closed.

Mold for injection molding works as follows.

In the working position at the time of pressing metal mold is closed. At the same time, the pusher 6 interacts with the rod 3 and the shaping inserts M and 4 with conical surfaces in and c, and the sliding frame 9 is located in the slots of the mold. The movable half-form 2 departs from the fixed half-form 1 by the amount of travel of the machine. After the mold has been opened, the machine pusher moves the support plate 7 through the rod 8 and together with the casting pusher 6 onto the machine pusher stroke. At the same time, at the beginning of the movement of the pusher of the machine, the formative liners 4 are detached from

castings and then, after selecting the gap d, the castings are removed from the rod 3 with simultaneous spreading of the shaping inserts 4 along the guides 5. As the inserts 4 move along the guides 5, the frame 9 begins to move in the holes of the strips 10 until the inserts 4 move and rigidly fixes them in this position. In this case, the conical surfaces hung out of contact. Before closing the mold / mold, the support plate 7, together with the collider b of the castings, returns to its original position through the rods 8. With

In this way, the conical surfaces in the core 3 and the collider 6 of the castings come into contact, and the core 3 leaves the gap d to the initial position, after which the mold is lubricated and closed.

The movable half-form 2 begins to move to the right until the shaping inserts 4 touch the fixed half-form 1. As the movable half-form 2 continues to move to the right, the shaping inserts 4 begin to move along the guides 5 together with the sliding frame 9 until the conical surfaces touch the facing b castings with

forming sheets 4, and the frame 9 will not enter the groove of the mold, i.e. to the starting position. The mold is closed, the cycle repeats. The invention allows to simplify the design of the mold and increase

its reliability in work.

Claims (2)

Claims 1. Injection mold for injection molding, comprising a fixed mold and a movable mold, including a rod mounted with the possibility of axial movement, detachable shaping inserts with inclined guide elements, a casting pusher, a base plate with rods and a machine pusher, characterized in that it is equipped with a sliding frame rigidly connected with split molding inserts, base plate through the rods it is connected with the pusher of the machine and has the ability to interact with the split formative liners, and the pusher is fixed on the base plate, 2. A mold according to Claim 1, characterized in that the split formative liners, the pusher and the rod have tapered surfaces in the place of their interaction. ten  Fig 2 & Mr F rag, Ј Ј.