DE2148759C3 - Loading device for die casting machines - Google Patents

Description

The invention relates to a loading device for die casting machines or casting molds scooping a liquid metal from a supply and pouring the same into the filling opening of the machine or Form-pouring spoon, the holder of which is rotatably mounted on the end of an arm around a pivot axis the spoon holder parallel axis is pivotably mounted on a frame, with a chain drive for rotating the spoon holder to regulate the spoon position, the one on the spoon holder in its Sprocket fixed to the axis of rotation and a sprocket connected to this via an endless chain, coaxial to the Includes pivot axis of the pivot arm arranged base sprocket, and with a device for tilting the bucket around a horizontal axis.

In known devices of this type (US-PS 393 837; "Foundry" 58 (1971), p. 13) is the basic sprocket of the chain drive fixed relative to the frame of the device non-rotatably and both have Sprockets the same diameter. This is to ensure that the spoon holder during the pivoting movement of the arm is rotated with respect to this in such a way that its position with respect to the horizontal is unchanged is held. When dipping the spoon into the liquid metal and introducing the metal into the filling opening of the die-casting machine at the end of the pivoting movement, the spoon must use a separate Drive can be tilted. In the known loading devices, special devices in the form of an actuating linkage (US-PS 3 393 837) or another chain drive ("Gießerei" 58 (1971), p. 13) is required. The fulcrum of the In such designs, the spoon is in the lower part of the at its upper end rotatable with the Swivel arm connected bracket.

The aim of the invention is to provide a device of the type mentioned above for practical use in particular functional and easy to design.

To this end, the invention provides a loading device of the type mentioned above that to use the chain drive as a device to tilt the spoon, the basic chain wheel of the chain drive relative to the frame of the device rotatable in both directions of rotation by means of an adjusting drive and the spoon is rigidly connected to its holder is

This construction thus offers the advantage that the existing chain drive, which in the known devices only serves to regulate the spoon position when swiveling the arm in a certain position relative to the horizontal; eu hold, now also as an actuating device for tilting of the spoon is used, so that no further facilities are required. This results in a substantial simplification in the structure of the device.

There is a casting machine known (GB-PS 984 086), on which there is a casting channel, into which by means of a Spoonful of liquid lead is poured into it. The spoon that is used to lift the melt out of a furnace and to pour into the channel is arranged on a swivel arm and on its holder in such a way fixed that both a pivoting of the arm and a regulating rotation, as well as a tilting do so Spoon is possible. Simple gravity and simple stops are used for regulating and tilting used. In comparison to the loading device according to the invention, which has a forced actuation provides by means of a chain drive, this is a device of a different type. That The spoon is tilted by hitting one of the stops. This is opposite to the compulsory Operation disadvantageous, since it leads to splashing of the melt and impairment of the safety of the Dosing can result.

An advantageous embodiment of the device according to the invention is that the adjusting drive for the basic sprocket is formed by a crank mechanism that can be moved with the aid of a pressure cylinder is.

According to a special feature of the invention that has the spoon holder in its axis of rotation connected sprocket has a larger diameter than the basic sprocket. As a result, the Pivoting the arm with the base sprocket stationary changes the position of the bucket holder in the Causes a slow tilting. This can be of advantage in different cases, for example, if an incline is provided for the spoon when scooping, but on the other hand for the transport of the liquid metal with the spoon is less favorable. It can then be changed by choosing an appropriate Diameter of the Keltentade assigned to the spoon holder during the pivoting process Achieve a tilted position in the opposite direction. Furthermore, tilting of the spoon during the

- swiveling movement of the arm also generally prevents it from being grooved because this already means that part of the

n of the spoon necessary tilting process vorwegrendesLoi ^ ^ ^^ _{ßecndigung der}

hole required remaining tilting -._., thus a smaller stroke that requires and less time connected to a sprocket 18 (Fig. 4), which is firmly attached
^ ^^ ^ _{the spoon age} 10 is seated. Mu

the number 19 is a on the arm 9 "** n ^ ^te *" £ ^ ¹
Tensioning the chain 17 is referred to. The basic_chains

threshing device n _ä ", right,." ils leg, = rope view of the

and 3 positions of the crank drive shown 21. 22 close

Γ, can rotate freely. The spoon , he «« ^ '^

SiSÄSS

is so on sem.r Ha - * "f ^e J ^ _{e |} 'J ™" _T ", _{who is} emptying the spoon? ¹ ; A “ ^C eL SeT _ä! ' foSlT B ™ eg »n _g in the Z = U of swaying

Ws?.; A "eL S

after this

from the flu

Me-

the shaft 7 seated (not shown)

_matures , so that when the piston in ZyUader is moved in one direction or the other, the shaft 7 is rotated by a predetermined angle in one sense or the other.

On the remote front end of the arm J supporting shaft 7 (F i g.5) is a basic sprocket designated wheel 16 freely supported; a m

Connection between the shaft 7 and the em chains ^

^ _{t Ent} | _; . ". Ngsstellung gpp

the m ^ «J zoom placed metal is now m sneezes η of the above" _{k 3 hine} i _n. After this

d, e opening 4 deM · ^ ^ ^ _{KwM {neh 2X 22 with} .

Λ. Pressure cylinder 23 in the opposite direction of the pressure «« ty of _the ^^. _{fl dje starting} , a _gi

^ _{3ηη the} arm 9 is pivoted by means of the An ^ until the spoon U has reached α «g ^ _{immersion] age} again, ..

who is eihineut in metal, fa ",

In addition 5 sheets of drawings

Claims (3)

Patent claims: 1. Charging device for die casting machines or casting molds with a liquid metal scooping from a supply and pouring the same into the filling opening of the machine or the mold, the holder of which is rotatably mounted on the end of an arm which is pivotable about an axis parallel to the axis of rotation of the spoon holder "> A frame is attached, with a chain drive for the spoon position regulating rotation of the spoon holder, which contains a sprocket fixed to the spoon holder in its axis of rotation and a base sprocket connected to this via an endless chain, arranged coaxially to the pivot axis of the swivel arm, and with a device for tilting the spoon around a horizontal axis, characterized in that the basic chain wheel (16) relative to the frame (5) is also used as a device for tilting the spoon (11). the device can be rotated in both directions of rotation by means of an adjusting mechanism (23) and the spoon (11) is rigidly connected to its holder (10). 2. Device according to claim 1, characterized in that that as an adjustment drive for the basic sprocket (16) by a pressure cylinder (23) movable crank mechanism (21,22) is provided. 3. Apparatus according to claim 1 or 2, characterized in that the with the spoon holder (10) in its axis of rotation (12) connected chain wheel (18) has a larger diameter than that Has basic chain wheel (16).