A sprayer assembly includes a sprayer head having a manifold that is fluidly coupled with an atomizer and a plurality of nozzles for dispensing a fluid onto a die mold.
Conventionally, during a molding process, a sprayer head is provided that dispenses fluid onto a die mold either in preparation for casting a mold or once a mold has already been cast and removed. These sprayer heads are configured to be specific to a particular die mold and are thus not compatible with other die molds.
In accordance with one embodiment, a sprayer assembly comprises a sprayer head, an atomizer manifold, a fluid conduit, an air conduit, and a plurality of atomizers. The sprayer head comprises a platen manifold and a plurality of nozzles fluidly coupled with the platen manifold. The fluid conduit is fluidly coupled with the atomizer manifold and is configured to supply fluid to the atomizer manifold. The air conduit is fluidly coupled with the atomizer manifold and is configured to supply air to the atomizer manifold to atomize the fluid within the atomizer manifold. The plurality of atomizers is fluidly coupled with the atomizer manifold and the platen manifold. Each atomizer is configured to feed atomized fluid to the platen manifold for dispensation of the atomized fluid from a subset of the plurality of nozzles.
In accordance with another embodiment, a sprayer assembly comprises a sprayer head, a first atomizer manifold, a second atomizer manifold, a first fluid conduit, a second fluid conduit, a first air conduit, a second air conduit, a first atomizer, a second atomizer, a third atomizer, a fourth atomizer. The sprayer head comprises a first platen manifold, a second platen manifold, a first group of nozzles, a second group of nozzles, a third group of nozzles, and a fourth group of nozzles. The first platen manifold comprises a first submanifold and a second submanifold. The second platen manifold comprises a third submanifold and a fourth submanifold. The first group of nozzles is fluidly coupled with the first submanifold. The second group of nozzles is fluidly coupled with the second submanifold. The third group of nozzles is fluidly coupled with the third submanifold. The fourth group of nozzles is fluidly coupled with the fourth submanifold. The first fluid conduit is fluidly coupled with the first atomizer manifold and is configured to supply fluid to the first atomizer manifold. The second fluid conduit is fluidly coupled with the second atomizer manifold and is configured to supply fluid to the second atomizer manifold. The first air conduit is fluidly coupled with the first atomizer manifold and is configured to supply air to atomize the fluid within the first atomizer manifold. The second air conduit is fluidly coupled with the second atomizer manifold and is configured to supply air to atomize the fluid within the second atomizer manifold. The first atomizer is fluidly coupled with the first atomizer manifold and the first submanifold. The first atomizer is configured to feed atomized fluid to the first submanifold for dispensation from the first group of nozzles. The second atomizer is fluidly coupled with the first atomizer manifold and the second submanifold. The second atomizer is configured to feed atomized fluid to the second submanifold for dispensation from the second group of nozzles. The third atomizer is fluidly coupled with the second atomizer manifold and the third submanifold. The third atomizer is configured to feed atomized fluid to the third submanifold for dispensation from the third group of nozzles. The fourth atomizer is fluidly coupled with the second atomizer manifold and the fourth submanifold. The fourth atomizer is configured to feed atomized fluid to the fourth submanifold for dispensation from the fourth group of nozzles.
In accordance with yet another embodiment, a sprayer head comprises a first platen manifold, a second platen manifold, a first group of nozzles, a second group of nozzles, a third group of nozzles, and a fourth group of nozzles. The first platen manifold comprises a first submanifold and a second submanifold. The second platen manifold comprises a third submanifold and a fourth submanifold. The first group of nozzles is fluidly coupled with the first submanifold and is configured to facilitate dispensation of atomized fluid from the first submanifold. The second group of nozzles is fluidly coupled with the second submanifold and is configured to facilitate dispensation of atomized fluid from the second submanifold. The third group of nozzles is fluidly coupled with the third submanifold and is configured to facilitate dispensation of atomized fluid from the third submanifold. The fourth group of nozzles is fluidly coupled with the fourth submanifold and is configured to facilitate dispensation of atomized fluid from the fourth submanifold.
It is believed that certain embodiments will be better understood from the following description taken in conjunction with the accompanying drawings in which:
In connection with the views and examples of
Prior to assembling the die mold parts, the sprayer assembly 10 can facilitate application of a lubricant to the die mold. The lubricant can lubricate the surface of the casting receptacle to help prevent the casting from sticking inside of the die mold. The lubricant can also serve as a coolant for the die mold and can be applied to the die mold until the temperature cools enough to allow molten material to be provided to the die mold again without causing excessive heating. As illustrated in
A fluid delivery system 16 can be fluidly coupled with the sprayer head 12 and configured to feed lubricant to the sprayer head 12 for dispensation onto an associated die mold. The fluid delivery system 16 can include a plurality of air supply conduits 18 and a plurality of fluid supply conduits 20. The air supply conduits 18 can be fluidly coupled with respective air splitters 22. Each of the air splitters 22 can route air from each of the air supply conduits 18 to a pair of atomizer manifolds 24. The fluid supply conduits 20 can be fluidly coupled with respective fluid splitters 26. Each of the fluid splitters 26 can route the lubricant from each of the respective fluid supply conduits 20 to respective pairs of the atomizer manifolds 24. Each atomizer manifold 24 includes a plurality of atomizers 28. Air and lubricant can mix together within the atomizer manifolds 24 and the atomizers 28 can feed atomized lubricant to the sprayer head 12 for dispensation onto a nearby die mold.
Although the fluid dispensed by the sprayer assembly 10 is described as a lubricant (e.g., a cooling lubricant), it will be appreciated that the sprayer assembly 10 can be configured to deliver any of a variety of suitable alternative fluids to a nearby die mold, such as anti-solder or water, for example. One example of the fluid delivery system 16 is provided in
Referring again to
The arrangement of the first and second nozzles 56, 58 on the respective first and second platen manifolds 52, 54 can conform to the die mold to facilitate effective dispensation of fluid onto a die mold. In one embodiment, the die mold (e.g., 284 shown in
Referring now to the die molding process, once the base portion and the lid portion have been separated and the casting removed (e.g., manually and/or through automation), the sprayer head 12 can move into position between the base portion and lid portion with the first platen manifold 52 positioned adjacent to the lid portion and the second platen manifold 54 positioned adjacent the base portion. At least a portion of each of the first and second platen manifolds 52, 54 can extend into the lid portion and the base portion (e.g., into their respective casting receptacles), respectively. In one embodiment, with the sprayer head 12 in position, the base portion and the lid portion can be moved to sandwich the sprayer head 12 between the base portion and the lid portion such that the sprayer head 12 is almost entirely enveloped by the die mold. Once the sprayer head 12 is in position, the first and second nozzles 56, 58 can be activated to dispense atomized fluid (e.g., lubricant) into the lid portion and the base portion, respectively. Once the application of fluid is complete, the lid portion and the base portion can be moved away from the sprayer head 12 and the sprayer head 12 can be retracted into a stand-by position. The lid portion and the base portion can then be placed together for molding another casting. In one embodiment, the sprayer assembly 10 can be moved linearly (e.g., by the robotic apparatus) along a longitudinal axis (A1 in
In one example, the configuration of the first and second platen manifolds 52, 54 can be suitable for dispensing atomized fluid onto a die mold for an inline four-cylinder engine block. In particular, the rectangular shape of the first platen manifold 52 can correspond with a relatively shallow rectangular casting receptacle defined by the lid portion. The C-shape of the second platen manifold 54 can correspond with the casting receptacle of the base portion which can include a row of projections that create four cylinder bores into the engine block casting. When the second platen manifold 54 is inserted into the casting receptacle of the base portion, the second platen manifold 54 can straddle the projections to facilitate effective distribution of atomized fluid throughout the casting receptacle of the base portion. It will be appreciated that the shape and configuration of the first and second platen manifolds 52, 54 shown in
Each of the first and second platen manifolds 52, 54 can include respective pluralities of first and second sub-manifolds (e.g., 76, 78 in
Referring now to
Each of the atomizers 28 can be in electrical communication with a controller that is configured to selectively control operation of the atomizers 28. The controller can control each of the atomizers 28 to control the volume of atomized fluid dispensed at each of the zones. In one embodiment, the controller can control the duration of operation (e.g., duty cycle) of each atomizer 28 to control the volume of atomized fluid dispensed at each of the zones. In another embodiment, the atomizers 28 can comprise variable orifice-type atomizers 28. In such an embodiment, the controller can control the amount of fluid flowing through the atomizers 28 to control the volume of atomized fluid dispensed at each of the zones.
When the sprayer head 12 is in position to dispense atomized fluid to the die mold, each of the atomizers 28 can be independently controlled (e.g., by the controller) to tailor the fluid dispensed at each zone to certain characteristics of the die mold. For example, certain areas of the die mold can be hotter than others when the casting is removed from the die mold. The group(s) of nozzles (e.g., 56, 58) that is/are closest to the hotter areas can provide more fluid to the hotter areas to provide more uniform cooling of the die mold than can be achieved with conventional die mold sprayers. In another example, certain areas of the die mold can be susceptible to lubricant pooling. In such an example, once the sprayer head 12 has completed dispensing the lubricant to the die mold, controlled amounts of air can be fed to the group(s) of nozzles (e.g., 56, 58) closest to the pooling areas to disperse the pooled lubricant from the die mold. The castings from the die mold can accordingly be less susceptible to porosity effects or other imperfections than die moldings that are lubricated/cooled with conventional die mold sprayers. In another example, the spray pattern of the sprayer head 12 can be tailored to conform to a variety of different die molds by selectively activating or deactivating certain groups of the nozzles (e.g., 56, 58) for a spraying process. As such the sprayer head 12 can be more versatile and thus more cost effective to implement than conventional, die-specific sprayer heads.
In one embodiment, the operational settings of the sprayer assembly 10 can be predefined for a particular die mold. In such an embodiment, the settings for the sprayer assembly 10 can be loaded into the controller prior to operation of the sprayer assembly 10 such that the sprayer head 12 operates in substantially the same manner each time the fluid is dispensed to the die mold. In another embodiment, the sprayer assembly 10 can measure/detect certain characteristics of the die mold during each operation of the sprayer assembly 10 and can tailor the operation of the sprayer head 12 to enhance the effectiveness of the fluid being dispensed for each operation of the sprayer assembly 10. In such an embodiment, the operation of each of the zones can change in response to certain characteristics of the die mold. For example, the sprayer assembly 10 can be configured to detect hot spots on the die mold from a thermal image. The sprayer assembly 10 can then direct the dispensation of fluid towards the hot spots. As the lubricant cools the die mold, the sprayer assembly 10 can continue to monitor the thermal image of the die mold and adjust the operation of the sprayer head 12 accordingly. In another example, the sprayer assembly 10 can be configured to detect pooled lubricant on the die mold and can direct the dispensation of air towards the pooled lubricant. In one embodiment, a thermal imaging device can be associated with the sprayer assembly 10 to facilitate thermal imaging of the die mold. When the casting is removed from the die mold, the thermal imaging device can detect hot spots on the die mold. Data from the thermal imaging device can be fed-back (e.g., thru a PLC) to tailor the spray pattern of the sprayer head 12 accordingly. In one embodiment, the thermal imaging device can be mounted to the die mold and positioned to image the die mold once the casting is removed. In another embodiment, the thermal imaging device can be mounted on a robotic arm that facilitates movement of the thermal imaging device into the die mold once the casting has been removed.
Referring now to
Referring now to
Referring now to
In one embodiment, the robotic arm 282 can facilitate operation of the sprayer assembly 210 in two directions along the longitudinal axis A1 (
The foregoing description of embodiments and examples has been presented for purposes of illustration and description. It is not intended to be exhaustive or limiting to the forms described. Numerous modifications are possible in light of the above teachings. Some of those modifications have been discussed, and others will be understood by those skilled in the art. The embodiments were chosen and described in order to best illustrate principles of various embodiments as are suited to particular uses contemplated. The scope is, of course, not limited to the examples set forth herein, but can be employed in any number of applications and equivalent devices by those of ordinary skill in the art.
This application claims priority of U.S. provisional patent application Ser. No. 61/790,756, entitled AUTOMATED SPRAYER ASSEMBLY, filed Mar. 15, 2013, and hereby incorporates this provisional patent application by reference herein in its entirety.
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