Inverter For Brick Machine Mould
An inverter adapted to gently invert multi-cell moulds used in a brick machine includes
a first carrier for transporting a mould through a first arcuate path, a second carrier for transporting a mould through a second arcuate path to cause inversion of the mould, and means for transferring a mould from the first to the second carrier. When the inverter is in use, the cumulative effect of transporting a mould through said first and second arcuate paths is to cause inversion of the mould without subjecting the mould to undue shock loads and to accurately locate the mould for subsequent operations thereon. The first and second carriers preferably include pairs of holders rotating synchronously in opposite directions.
This invention is concerned with improvements in or relating to an inverter and is particularly although not exclusively concerned with improvements in an inverter adapted for use in the inversion of moulds used in soft mud brick making.
In the manufacture of soft mud bricks, it is conventional to fill a multi-cavity mould with clay at a moulding machine and to discharge the mould cavities by inverting the mould downstream of the moulding machine. Thereafter, the discharged bricks are fed to a drying chamber and subsequently to a conventional kiln or the like for firing and the inverted moulds are recirculated to an input side of the brick moulding machine.
In their passage from a mould discharge locality to the input side of the brick moulding machine, the moulds are cleaned by high pressure water jets and, after partial drying by an air blast or the like, the mould cavities are subjected to a sanding operation whereby the floor and walls of the mould cavities are each provided with a coating of sand.
Before the sanded moulds are fed to the input side of the brick making machine, they are once again inverted so that the cavities thereof are upwardly facing.
In inverting the moulds for effecting the discharge of the soft mud bricks from their cavities, it is advantageous for a certain degree of shock load to be experienced by the mould and its contents because this helps in the release of the "green state" bricks from the moulds.
However, after the mould cavities have been sanded, it is most disadvantageous to subject the moulds to any undue shock loads because the coatings of sand will be lost from the base and side walls of the moulds.
Also, because moulds used in soft mud brick manufacture are generally made of wood, wear is a major problem which may cause difficulties in feed arrangements for transposing the moulds from a downstream side of a moulding machine via an inverter to an input side of the moulding machine.
These difficulties, principally arising from the moulds being of varying sizes, may conveniently be overcome by the use of an inverter provided by the present invention wherein discrepancies in mould sizes are tolerated and transportation of the moulds is effected without undue shock loads thereto.
Many devices have been proposed hitherto for inverting moulds or the like to empty the contents thereof or to orient casks or packages for subsequent operations thereon. Nevertheless, none of the devices known to the applicants hereof are capable of orienting a mould or the like in an exact position for the subsequent operations thereon or for ensuring that such inversion of a mould is effected without undue shock loading thereto. British Specification No. 657576 merely discloses a device for removing loaves of bread from open topped pans in which they are baked and there is no obvious requirement for the loaves to be accurately positioned upon being removed from the pans.
British Specification No. 1213224 and 1254861 each comprise devices for the inversion of kegs or packages and, although each device is comprised of first and second carriers adapted for conveying the kegs or packages through first and second arcuate paths to effect said inversion, there are no means for ensuring the accurate transfer of the kegs or packages between the first and second carriers or for ensuring that the kegs or packages are not subjected to undue shock loads.
In addition, the disparity between the mould sizes due to differential wear must be allowed for.
The inverter 10 of the present invention overcomes the drawbacks of known inverters and subjects the moulds to minimal shock loads. Also, the inverter is capable of accepting moulds of slightly different sizes and in transferring the moulds as aforesaid ensures, by operation of the transfer device 130, that the trailing edges 190 of the moulds are positioned at a common datum point at the outfeed position 58 so that the pusher elements 188 have a common pick-up and engagement point with respect thereto.
Whereas in the specific embodiment the discs 42 and 52 are arranged to be contra-rotating, in an alternative embodiment provided by the invention the discs may be rotated in the same direction by any suitable gearing or like mechanism.
Also it is envisaged that the carriers 40 and 50 may be provided with more or less than the four pairs of mould clamps 120, e.g. there may be three or six such sets of clamps whereby in use the moulds 16 will be carried through longer or shorter arcuate paths and the transfer of the moulds between the carriers 40 and 50 will be effected at some angular position between the vertical and the horizontal axis of the first carrier 40. In order to facilitate such a modification the carrier 50 will be offset from the vertical axis and will lie on a common transfer axis of the two carriers, e.g. where there are six sets of clamps 120, the common transfer axis will lie at 60 to the horizontal.
However, where there are eight sets of clamps 120, the present arrangement will suffice with the moulds being subjected to at least two indexing steps between being received by the carrier 40 and being transferred to the carrier 50.
While there has been shown and described various arrangements of an inverter for block machine moulds, it should be appreciated that the invention is not limited thereto. Accordingly, any modifications, variations or equivalent arrangements within the scope of the accompanying claims should be considered to be within the scope of the invention.
by: Maggie
Frtagande Utomlands? En Drm Som Kan Bli Verklighet P Endast 2 Timmar! The affair that is alarming about the map editor But Today There Is More Choice The Efficient Breach of Contract: An aspect Temples Around Thiruvananthapuram(trivandrum) Trend Following is the Ultimate Method for Great Wealth A absolute curiosity is actuality for your pleasure This is the capital adjustment in which your character Wheel Balancing For Your Car Feodor Skripchenko - The Legend Of Chess Donna Imson - lots of real talent Walk In Bathtubs How To Choose The Right Salon