SU829331A1 - Injection-mould pressure die casting - Google Patents

Description

The invention relates to foundry, in particular, to machines and equipment for casting reinforced castings.

A known mold for casting hemispherical reinforced castings under pressure, comprising movable and stationary half-molds, a shaping insert, a gate with a fixed rod, a movable ring surrounding the core and connected with a gate, a floating pusher, a locking lock. The slide has grooves and is connected to the hydraulic cylinder P 1.

However, when the gate moves down, the rod, squeezing out the reinforcement, distributes it over the hemisphere, which leads to rapid wear of the decoration tool, and often to its breakage. Only spherical elements of exact dimensions can be used as reinforcement, which increases the cost of the casting. The removal of the casting is done by Yulkatel and

Moving ring, which complicates the design of the mold.

The purpose of the invention is to increase the service life of the mold and simplify the process of removing the casting.

This entirety is achieved by the fact that the forming insert is complete with the loading opening and is placed in the upper part of the movable half-form, the fixed floor form is provided with a locking wedge that overlaps the loading opening, the gate, the ring and the rod are axially displaced relative to each other, vertical are made in the ring the grooves, and the rod is provided with diametrically located inglifts, which are included in the vertical grooves of the schiber and ring, while there is a gap between the collar of the ring and the gate.

FIG. 1 shows schematically a mold in the closed position, a slit; in fig. 2 - the same, in the position before loading the reinforcement; in fig. 3 - the same, in the position after removal of the casting.

The mold contains a movable and fixed half-mold

 The movable half-form consists of a yoke 1, in the upper part of which a forming insert 2 with a loading opening 3 is mounted. In the slots of the yoke a hollow vane 4j is moved inside which the movable ring 5 is mounted, the cooling rod 6, the pin 7 is pressed perpendicular to its axis, the pin 7, the ends of which grooves 8 run in the vertical jibie, made in the gate and the movable ring.

A stop 9 is installed in the lower part of the cage. The rod is connected to the hydraulic cylinder (not proven) of the fifth 10.

The fixed half-form consists of a yoke 11, in which a gating sleeve 12 is fixed and a locking wedge 13 is mounted. In the lower part of the fixed half-form, there is a locking lock 14, made with a bevel on the working surface, for locking the gate, the movable ring and the decorating rod in the upper position with closing the mold before zapivka.

The mold works as follows.

After the reinforcement is filled up through the loading opening 3 into the cavity formed by the insert 2, the gate 4, the movable ring 5 and the rod 6, the half-molds are closed, and the gate that moves in the grooves of the sleeve 1, and with it the locking ring and the rod are fixed in the vertical position by the locking lock 14. At the same time, the loading opening 3 is blocked by a locking wedge 13 mounted in a fixed holder 11. After pouring the metals, a hydraulic cylinder is turned on through the sprue bushing 12 and the mold is opened, which through pin 10 informs the rod 6 to move down. The casting, held on the rod due to the force of the spike, is removed from the insert 2 and together with the rod 6, the gate 4 and the movable ring 5 is moved downwards. The ring 5 reaches the stop 9, and the rod 6, continuing its movement, is released from the bolt (from the casting and through the pin 7,

293314

the ends of which move in vertical grooves 8 of the gate and the movable ring, informs the gate 5 that is additional to the ring until it is pa9, as a result of which the casting is removed from the gate by the movable ring 5 (Fig. 3). Then, the casting is removed from the mold, the hydrocylinder is switched on, informing through the first 10

10 upward movement of the rod 6, which

moves the gate 4 and the movable ring 5 upward against the stop into the insert 2. Form rbtoBa to the reinforcing bed, and the cycle repeats.

15 The invention provides loading and distribution of reinforcement elements, without pressure on it by the shaping rod, and allows the use of reinforcement of various configurations with wide

20 tolerances increase

the durability of the casting tool, dramatically reduces the cost of making reinforcement, increases the safety of the caster’s operation, simplifies

25 mold design.

Formula of Invention

Mold for casting hemispherical reinforced castings containing fixed

thirty ,; a half-form and a mobile half-form with a forming insert, a gate installed parallel to the plane of the mold connector, provided with a ring encompassing the rod, and having vertical grooves and a locking lock installed in the fixed half-form, in order to increase the service life of the press mold and simplify the process of casting the casting, the forming insert is placed in the upper part of the mold and is made with a loading opening, and the fixed half-form is provided with a locking wedge that overlaps the loading The hole, pin, ring and rod are axially displaced relative to each other, vertical grooves are made in the ring, and the rod is provided with diametrically spaced pins that fit in the vertical grooves of the gate and ring, with a gap between the ring shoulder and the gate.

Sources of information taken into account in the examination

1, USSR Author's Certificate tP 520185, cl. B 22 D 17/22, 1976. tZID phage.

Claims (1)

I claims A mold for injection molding of hemispherical reinforced castings, comprising a fixed half mold and a movable half mold with a forming insert, a gate mounted parallel to the plane of the mold connector, provided with a ring covering the core, and having vertical grooves and a locking lock mounted in the fixed half mold characterized in that, in order to increase the life of the mold and simplify the process of removing the casting, the forming insert is placed in the upper part of the mold and is made with loading a hole, and the fixed half-mold is equipped with a locking wedge that overlaps the loading hole, the gate, the ring and the rod. are mounted with the possibility of axial movement relative to each other, vertical grooves are made in the ring, and the rod is equipped with diametrically located pins included in the vertical grooves of the gate and ring, while a gap is made between the shoulder of the ring and the gate.