DE1558354B1 - CASTING DEVICE - Google Patents

Description

1 2

The invention relates to a pouring device, particularly because of its different character for the low-pressure casting process, with the characteristics of the preloading the mold wall sections two slides, each of which has a separate spring before casting the pressure of the th mold wall section carries, as well as with mechanically opposite and abutting mold niches Facilities for the process at least 5 partial margins kept as small as possible, so that one of these slides up to the casting position of the KoMl- when the casting mold is filled due to the force wall sections. of the metallostati-

In known devices of this type, internal pressure occurs in all edge sections a compression and holding together of approximately the same contact pressure prevails, with one Mold wall sections during casting io high dimensional accuracy of the casting at optimal by hydraulic devices. Thereby it is guaranteed of little wear of the casting mold. particular disadvantage that either in the event of leakage losses, an embodiment of the invention is

of the hydraulic system or, in the event of a failure, that is explained in more detail on the basis of drawings, entire facility in the cast, but it still shows

insufficiently solidified or solidified Zu- 15 F i g. 1 shows a partially sectioned casting stand of the casting, the mold parts apart device with the features of the invention and can be pressed so that no dimensionally accurate- F i g. 2 shows a section along the line H-II in F i g.l.

speed of the casting can be guaranteed or the A casting device according to FIG. 2 two

Mold chamber even run out: can. opposing carriage 10.11 on the

In addition, the edge sections of the mold 20 are subject to rollers 13 and 14 on rails 15 and 16, respectively halves of known devices high loads, are movable.

especially when the molded parts are pressed together before the carriages 10 and 11 each carry one

the pouring, which precisely these edge areas, mold wall section, which as a one-piece mold boxes 17, 28 are designed to be responsible for a careful sealing and on their underside are, high mechanical stresses 25 edges over approaches 17 α and at their upper edges subject to rapid wear and tear and connected to the slide by means of hooks 17 &, thus can lead to leaks in the mold. On the opposite inner surfaces of the

The object of the invention is to provide a casting device, molding boxes 17, 28, molded parts 18, 25 are provided, while avoiding the disadvantages of known devices with their lower side surfaces over supports to create, in which in particular the 30 rails 19 rest on the carriage 10, 11 and on abutting edge areas of the molded parts their broadsides over retaining plates 21 and as frontal as possible low mechanical stresses on the side via support plates 20 (FIG. 1) with the mold and which are also simple and connected to boxes 17, 28, optimally stable with high functional reliability - perpendicular to the outer surfaces of the molding boxes

is built. 35, 17, 28 are each a according to FIG. 2 upper and one

In the case of casting devices, this task is performed by the lower set of springs 23, 24 or 27, 26 mentioned type solved according to the invention, see which on the one hand Abdaß on the slide to compress the mold wall and on the other hand support the molding boxes in their cuts springs are provided that preload in the lower closing direction. They have Area have a harder characteristic than in the 40 springs 24, 27 in the respective lower area of the upper area. Mold wall sections a harder characteristic

In order to achieve great torsional stability even in the case of Gießvor- ■ than those in FIG. 2 upper area what directions with a large overall length and at the same time through in the assembled state of the molded parts low construction weight of the Kokillenwandab- 18, 25 whose connection seams differ in strength To ensure cuts, according to the invention, each is pressed together.

the slide on the back of each mold wall- In the seam between the two

section on the lower half of a carrier. Molded parts 18, 25 are shown in FIG. 2 more two

So that after pressing together the strip-shaped molded parts 31, 32 inserted, both mold parts of the predetermined and set According to FIG. 1 are on both ends of the

Preload pressure is maintained, 50 carriages 10 worm gears 33 and 34 according to the invention at the height of the carrier one is the Shiite, whose snails are shared by one th self-locking device is provided, whereby the motor 35 attached to the slide is driven at it regarding the special adaptation of the pre-will. From the gears 33 and 34 protrude horizontal load pressure on the screw spindles 36 or 37, which are arranged depending on the height of the casting right form metallostatic counter ends of different sizes 55 radially rotatable, but axially fixed in am pressure when pouring according to the invention especially chutes 11 attached bearings 38, 39 out it is advantageous that each mold wall section are a. Since the gear ratio of the worms of a gear mounted displaceably on the slide is very large, for example 30: 1 Has molding box worn molded part and that because of the correspondingly very small slope of the Forced springs between the molding box and the associated 6 ° thread turns on the screw spindles Carriages are arranged. frequently a self-locking when pushed together

To only one mold mold wall sections after solidified casting.

half to be able to move, with a lock so that a high stability of the entire casting

■ the opposite mold half is to be made, the device is guaranteed, each slide points It is also advantageous that the carriage on rollers 65 10, 11 at the level of the worm gear 33, 34 a are displaceable, which are independent of each other over the entire length of the casting device ■ have adjustable braking devices. extending carrier 47 (Fig. 2), the main

With the casting device according to the invention, the loading level is below the individual gravity

straight lines which extend in the longitudinal direction through the end faces of the molding boxes 17, 28 according to FIG. 2 run, is arranged. According to FIG. 2 is the distance ratio from the main exposure level of the Carrier 47 to the respective springs 23 and 24 at 5 2: 1 and can be used with very short casting devices change to about 3: 2.

According to FIG. 1, the molded parts 18 and 25 are constructed from several parts and are in their Pressed against each other in the longitudinal direction by clamping bolts 43.

The rollers located on the end faces of the carriages 10 and 11 are shown in FIG. 2 of Braking devices 44 blocked, which by actuating devices 45 independently of one another can be actuated to a stationary lock when moving a mold wall section of the opposite section to allow.

Claims (5)

20 claims: 1. Casting device, especially for the low-pressure casting process, with two slides, each of which carries a separate mold wall section, as well as mechanical ones Devices for moving at least one of these carriages up to the casting position of the mold wall sections, characterized in that for pressing the mold wall sections together Springs (23, 24, 26, 27) are provided, which are harder in the lower area Have characteristics than in the upper area. 2. Casting device according to claim 1, characterized in that each slide (10,11) on the rear side of each mold wall section has a support (47) on its lower half. 3. Casting device according to claims 1 and 2, characterized in that in the amount of Carrier (47) a device which locks the slide (10, 11) itself is provided. 4. Casting device according to claims 1 to 3, characterized in that each mold wall section a molding box (17, 17, 28) supported molded part (18, 25) and that the springs (23,24, 26, 27) between the molding box (17, 28) and the associated slide (10, 11) are arranged. 5. Casting device according to claims 1 to 4, characterized in that the carriage (10,11) are displaceable on rollers (13,14), the independently adjustable braking devices (44, 45) have. Copy 1 sheet of drawings