DE3032064C2 - Foundry machine for preparing, pouring, cooling, pushing in and out of molds - Google Patents

Description

20th

1. Foundry machine for providing, pouring, cooling, pushing in and pushing out molds, in particular of molded balls produced in the boxless molding process, with one as a body of revolution or a conveyor designed as a paternoster, with a number of shapes on its support elements load-bearing pallet carriers are attached so that they can be moved in a translatory manner and thus to the various work stations can be fed in as required, characterized in that a cam drive is provided for driving the conveyor (1,21), consisting of pairs of cam disks attached peripherally and radially symmetrically to one or both support disks (2) (12, 13) and a two-armed lever (16) rotatably driven about an axially parallel axis the ends of which a roller (17, 18) is attached, which when running on the curve (12a, 13a; the turning force initiates in the support disc (2)

2. Foundry machine according to claim 1, characterized in that between the drive motor

(14) and the two-armed lever (16) a gear

(15) is arranged.

3. Foundry machine according to claim 1 or 2, characterized in that the conveyor (I) consists of two on a central shaft (3/5) coaxially attached support disks (2), on which the periphery Pallet carriers (6) are rotatably and radially symmetrically mounted by means of support axles (7), which with the central shaft (3/5) are in a synchronous drive connection with reversal of the direction of rotation.

4. Foundry machine according to claim 3, characterized in that the synchronous drive connection from a central angle drive (9) at the end of the central shaft (3/5), one at the end of each Support axis (7) arranged angular drive (10) and a synchronous shaft (11) each.

5. Foundry machine according to one of claims 1 to 4, characterized in that the push-in and push-out station (E \, A \) is arranged on the topmost pallet carrier with an axially parallel pushing direction.

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65 this in such a way that the mold bales are placed on long, horizontal roller tables, conveyor belts or by means of rolling pallets on long conveyor tracks. This not only requires enormous operational areas, the pouring process is also complicated, since the pouring ladle has to be moved to the molds to be filled. To cool the filled molds, they have to be placed on special storage areas. This working process becomes even more complicated when different casting alloys have to be cast.

To reduce the floor area, foundry machines of the type indicated at the outset are known from US Pat. No. 10 66 835 and US Pat. From GB-PS 1 7 ⁷ 909 a foundry machine is also known which has a large toothed wheel on both sides of which support brackets for receiving a casting mold are suspended. So here the effective loads are nowhere near as great as with the arrangement of pallets that can hold 10 or more formballs.

Although these conveyors only have one-sided loading during loading and unloading, which is caused by the Drive device must be carried, so the total mass to be set in motion can filled forms are 25 to 40 tons. Conventional drive elements would be used to accelerate such masses such as gears, chains and the like, which are only available for such loads through special production and would therefore be too expensive, not suitable.

The large masses require large torsional forces and correspondingly large surface pressures in the transmission elements, whereby they are subject to severe wear and tear and corrosion caused by dusty, often corrosive hot gases are still promoted. In addition, the introduction of the rotational forces take place absolutely smoothly so that the crystallization of the melt is not disturbed.

The present invention is accordingly based on the object of a conveyor designed as a conveyor Foundry machine for optimal conditions in terms of operational floor space and the number of available ones To create forms in which the previously identified deficiency of the known machines is eliminated and optimal conditions for the introduction of the rotational forces are given.

This is achieved according to the invention in that a cam drive is provided to drive the conveyor, consisting of pairs of cams attached peripherally and radially symmetrically to one or both support disks and a two-armed lever rotatably driven about an axially parallel axis, on the A roller is attached to each end, which introduces the rotary force into the support disks when running on the curve.

With this drive, which works analogously to a Maltese drive, the rotational forces are introduced completely smoothly and the jolt-free standstill in the workstations is guaranteed. The desired acceleration at The conveying process is caused by the curvature of the curve pieces certainly. The hot exhaust gases have no access to the sliding surfaces in the rollers and Shaft bearings so that they are protected from excessive wear and corrosion.

Further advantageous embodiments of the invention, which also apply to the "humanization of the world of work" and aim for the greatest possible energy recovery,

are explained in connection with the exemplary embodiments described below Associated drawings show in

F ': g. 1 a foundry machine for providing, pouring, cooling, pushing in and out mold bales, in which the pallet carriers are arranged peripherally on two rotatable support disks, in a section along the line 1 + IderFig.2,

F i g. 2 shows a section through the machine according to FIG. 1 in section along line II + dog

F i g. 3 shows a vertical section through a conveyor designed as a paternoster.

In Figs. 1 and 2, 1 denotes a conveyor, whose support disks 3 with the shaft journals 3 in the two uprights 4 can be rotated about a horizontal axis are stored. The two support disks 2 are connected to one another by the hollow shaft 5.

The pin 3 and the hollow shaft 5 form the central shaft. On the support disks 2 are peripheral Pallet carrier 6 rotatably and radially symmetrically mounted by means of support axles 7. At 8 they are on the Pallet carriers 6 designated form bales parked. The support axles 7 and the central shaft (shaft journal 3 and hollow shaft 3) are in a synchronous drive connection with reversal of the direction of rotation. This connection consists of a central angular drive 9 arranged concentrically to the shaft journal 3 and one at the end of each support shaft 7 arranged angular drive 10, which via synchronizer shafts 11 related.

The cam disk pairs 12, 13 are attached peripherally and radially symmetrically to the support disk 2, the cam path 12a serving for clockwise rotation (arrow Pi) and the cam path 13a for counterclockwise rotation. The two-armed lever 16 is driven by the motor 14 via the transmission 15 and the rollers 17, 18 are attached to the free ends of this lever. If the lever 16 is now rotated in the direction of the arrow P ₂ , then the roller 17 runs up to the pivoting by 90 ° on the cam track 12 and down again on further rotation to 180 °. The roller 17 introduces a circumferential force into the support disk 2 depending on the gradient of the curve. After pivoting the lever 16 by 180 °, the roller 18 has run onto the next following curved path. In the case of conveyors with long pallet carriers, such drives are provided on both carrier disks to avoid excessive torsion stress.

In the machine according to FIG. 1 and 2 are the push-in station £ Ί and the push-out station Ai on the ^{top 5} pallet carrier with an axially parallel pushing direction, C designates the casting station and K the various cooling stations.

In the embodiment according to FIG. 3, the conveyor 21 is designed as a paternoster, the Pplettträger 26 are suspended like a swing on the rods 27 connecting the support chains 22, so that they rotate during rotation maintain their vertical position due to gravity. The support chains 22 can be one or both of the Stands 24 rotatably mounted support disks 23, 23 'driven analogously to the embodiment according to FIGS. 1 and 2 will.

In order to secure the pallet carriers 26 in the push-in and push-out station E ₂ and / 4t against swinging out, they can be locked here by means of bolts 28, 29. The opening 30 for pushing in and out is arranged to the side of the pallet carrier and short rails 33, which are extended when the flap 32 is opened, bridge the distance between the pallet carrier and the pull-off level of the molding machine.

The previous representations show that a foundry machine according to the present invention is equipped with a conveyor with rotary conveying movement around a horizontal, only one extremely small footprint required. Measures for Realize occupational and environmental protection as well as for energy recovery. The Fi g. 1 to 3 show one the conveyor 1 or 21 covering chimney 32, at the upper end of a smoke and exhaust pipe 33 with a rotatable throttle valve 34, which automatically opens when the pouring flap 33 is opened is brought, but can optionally also be controlled by hand.

The hot and health-damaging exhaust gases, which are mainly produced during casting, cannot now more get into the foundry room or into the environment. After cooling in a heat exchange device and cleaning and washing in a cyclone, they are released into the atmosphere in an environmentally friendly manner.

For this purpose 3 sheets of drawings

Claims (1)

Patent claims: The invention relates to a foundry machine for providing, casting, cooling, pushing in and out Shapes, in particular of molded balls produced in the boxless molding process, with a body of revolution or a conveyor designed as a paternoster, on whose support elements a number of shapes are supported Pallet carrier attached so that it can be moved in a translatory manner and can therefore be used at any time for the various workstations are supplied. In foundries it is often difficult to track the different manufacturing times, such as times for making molds and iron supply, melting time, casting time, required cooling times, etc. to be coordinated so that none Loss times arise. In order to keep this low, areas are required for provision or storage of the forms. This is especially true for companies with machines that use the so-called boxless molding process Manufacture mold balls. The advantage of the short production times of these machines is illusory, though it is not possible to provide sufficient floor space for storing or buffering the mold balls place. In the known operating method happens 10