US20010035277A1 - Module casting systems with shared controls - Google Patents
Module casting systems with shared controls Download PDFInfo
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- US20010035277A1 US20010035277A1 US09/851,808 US85180801A US2001035277A1 US 20010035277 A1 US20010035277 A1 US 20010035277A1 US 85180801 A US85180801 A US 85180801A US 2001035277 A1 US2001035277 A1 US 2001035277A1
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- casting
- cope
- platen
- adjacent
- upper platen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/26—Mechanisms or devices for locking or opening dies
Definitions
- the invention relates to automated casting systems and more particularly to a casting system employing a plurality of casting units disposed on a rotating table or the like.
- a casting system besides a casting mold, typically includes a mechanism for opening and closing the mold and a variety of electrical, pneumatic, and/or hydraulic systems which serve to perform a variety of controlling functions in the overall molding process. Furthermore, lubrication systems and cooling systems may be required.
- a problem with prior art casting system is the difficulty encountered in substituting a different configuration mold in an existing system. Since molds of various different shapes and configurations may be required from time-to-time and connections for the various systems to control the molding apparatus may vary substantially between molds, the changeover from one set of molds to another results in significant and expensive downtime for the casting system. Such changeover may require re-routing of electrical cabling and connections for pneumatic and hydraulic as well as cooling systems.
- a plurality of molds and the apparatus for opening and closing the molds are disposed on a rotating table or the like.
- the entire casting system must be shut down.
- Such a shut-down tends to be time-consuming since the system typically has to be cooled down for maintenance work and must be brought back to working temperature before operations can be resumed.
- a particular disadvantage of prior art systems is the costly downtime of the entire system for maintenance, repair or changeover of molds.
- Routine molding operations typically require that a filter used in the casting operation be removed and replace before a next pouring of the molten metal or the like. This is commonly done manually.
- the filter is typically removed as soon as possible after the previous pouring operation, often while it is still very hot. The filter removal can be both difficult and time-consuming.
- a further difficulty in the routine operation of a casting system is that the mold is preferably laundered after a casting operation and coated with a specialized coating prior to the next pouring. The functions of laundering and coating are typically performed manually and tend to be difficult and time consuming adding to the cost of the casting operation.
- a further difficulty in many casting operations is the removal of a casting from the mold, particularly from the drag of the mold, while the casting is hot.
- a modularized system comprising a plurality of casting modules, each of which may be removed from a casting system, such as a rotating table casting system, without affecting the operation of other modules.
- Each module is provided with on-board systems such as a lubrication system, a cooling system, etc., which operate independently from similar systems on other modules.
- Each module is provided with quick-disconnect connectors for connection to a main source of electrical power, hydraulic pressure, etc.
- the modules are preferably interchangeable and a variety of different modules may be installed in one main system and can be readily exchanged as required by production demands, without significant system downtime.
- a particular advantage of the modular system is that a casting module may be removed and replaced in a relatively short period of time since only a few connections need to be made. Furthermore, periodic maintenance and repair of the modules may be performed off-line with a minimum of production line down-time.
- a casting module of the system may be replaced by another module which has not only been set up and tested off-line, also warmed up off-line to bring the unit up to the desired operating temperature.
- the replacement of a casting module requires the casting operation be interrupted only for a period of time sufficient to disconnect a number of quick-disconnects connections, remove the casting module by means of a fork lift or the like, replace the removed module with a preheated casting module and make the necessary quick-disconnect connections.
- the new unit has been warmed up off-line and since the other units are not taken out of operation for an extended period of time, no significant system warn-up time is required and system downtime is reduced substantially.
- a casting unit is provided with a mechanism for mechanically removing a filter that is used in the casting process.
- the casting unit includes a pneumatic or hydraulic cylinder mounted on a pivoting bracket having spaced apart arms attachable by means of chain or the like to a filter to be removed.
- the filter may be raised during the pouring operation such that it is completely removed from the casting before the casting solidifies, thereby avoiding certain problems of the prior art associated with the removal of filters from a casting.
- a cope of a casting system provided with a tilting launder tray, preferably mounted on the upper platen, that is readily moved aside during the pouring operation and quickly put in the appropriate position to direct a laundering liquid into a filler neck of the upper platen.
- the upper platen of a casting system is provided with a swinging cope which is movable between the horizontal position, in which the cope is disposed adjacent a lower surface of the upper platen, and a vertical position in which the cope is extended at a 90 degree angle to the upper platen.
- the movable platen greatly facilitates cleaning of the cope prior to a next pouring operation.
- the cope is movable between the horizontal and vertical positions by one or more hydraulic or pneumatic cylinders and a hydraulic or pneumatically operated locking mechanism is provided to lock the cope in place adjacent to the upper platen.
- the lower platen is advantageously provided with a pneumatic or hydraulic cylinder arrangement which serves to raise the lower platen for easier removal of a casting and is further provided with a mechanism for lifting a casting from the drag.
- FIG. 1 is a plan view of a casting table supporting a plurality of casting modules
- FIG. 2 is a front elevational view of a casting module in accordance with the invention.
- FIGS. 3A and 3B are left and right elevational views, respectively, of the module FIG. 2;
- FIG. 4A and 4B depict enlarged breakaway views of a filter lift mechanism in accordance with the invention
- FIG. 5 is a plan view of a bracket for mounting a filter lift cylinder in the mechanism of FIGS. 4A and 4B;
- FIG. 6 is a side elevational view of a casting unit which is an alternate embodiment of the casting unit of FIGS. 2 - 5 ;
- FIG. 7 is a plan view along line 7 - 7 of FIG. 6 showing a launder tray and a cope operating mechanism
- FIG. 8 is a partial breakaway side elevational view of the casting unit at FIG. 6 showing the launder tray in an operating position
- FIG. 9 is a partial breakaway side elevational view of the casting unit of FIG. 6 showing the swinging cope 203 in the closed position;
- FIGS. 10 and 1 1 are partial cutaway right elevational views of FIG. 6 showing the cope locking mechanism in locked and unlocked states, respectively;
- FIG. 12 is a partial cutaway enlarged frontal elevational view of the dual action lower cylinder of FIG. 6.
- FIG. 1 is a plan view schematic representation of a rotatable casting table provided with a plurality of casting modules 100 and a central hub area 20 incorporating control and supply systems.
- the control and supply systems are connected to each of the modules 100 by means of control and supply lines 25 .
- Each of the casting modules 100 is preferably connected to an associated control supply line 25 by means of a quick-disconnect connector 30 .
- the central hub area 20 preferably includes an electronic controller 35 , a hydraulic unit 40 providing hydraulic fluid under pressure, an air supply unit 45 providing air under pressure and an electrical supply box 50 .
- the controller 35 may, for example, be a programmed logic array designed to provide electrical signals to various ones of the casting modules 100 to operate various air and/or hydraulic valves and/or relays.
- the programmed logic array may also receive signals from the various units 100 indicative of certain operations, such as actuation of limit switches, etc.
- the electric box 50 provides electrical power to the various units 100 , when required.
- a filling station 60 provides a source of molten material to be used in the casting modules 100 .
- the casting table 10 may be rotated to place a casting module 100 adjacent the filling station 60 .
- Molten material may be transferred from the filling station 60 to a casting module disposed adjacent the filling station through a transfer conduit 65 or ladle or the like.
- FIG. 2 is a frontal view of a dual casting module 100 consisting of two independently operable casting units 102 , 104 .
- Each casting unit is provided with an upper platen 106 for supporting a cope of a mold (not shown in the drawing) and a lower platen 108 for supporting a drag of a mold (not shown in the drawing).
- one of the casting units is shown in the open position in which the upper platen is spaced apart from the lower platen and the other of the casting units is shown in a closed position in which the upper platen is disposed adjacent the lower platen.
- the two casting units 102 , 104 operate in the same manner but are independently controlled by the controller 35 .
- dual unit casting modules rather than single unit casting module, a substantial savings in construction material and system connections will be realized while obtaining modularity of the system.
- single unit casting modules may be constructed as well.
- the dual casting modules are used to cast different parts of a unit to be assembled.
- a casting unit such as the dual casting unit 102 , 104 consisting of two sets casting modules, may be readily moved by means of a forklift or other lifting equipment onto the rotating table 10 , such that the advantages of modularity are not lost by the use of a dual unit. It will be understood that the invention applies to single units in the same manner as it applies to dual units described herein.
- the upper platen 106 is moveable between a lowered position in which the cope of the mold (not shown in the drawing) supported on the upper platen 106 is disposed in immediately adjacent the drag of the mold (not shown in the drawing) supported on the lower platen 108 , and a raised position in which the cope is spaced apart from the drag.
- the cope and the drag together form a mold ready to receive molten metal from a ladle or the like.
- the raising and lowering of the upper platen 106 is achieved by means of a hydraulic lift cylinder 112 having a movable shaft 113 connected to cross beam 115 .
- the cross beam 115 is mounted to a pair of lift rods 117 extending from the cross beams 115 through guides 110 to the upper platen 106 .
- Upper guide bearings 119 and lower guide bearings 120 are provided on upper and lower ends, respectively, of the guides 110 .
- the guide bearings are preferably provided with a wiper seal or the like engaging the surface of the guide rods and a lubricating oil may be provided to the bearings for purpose of cooling and lubrication.
- the lift cylinders 112 are actuated via a control valve 121 which selectively applies hydraulic fluid under pressure from hydraulic unit 40 to the upper and lower ends of lift cylinders 112 via hydraulic quick disconnect 122 and control valve 121 , thereby controlling the movement of the upper platen 106 .
- the control valve 121 is actuated in response to signals from controller 35 applied via electrical quick disconnect 126 and electrical conductors 124 .
- FIG. 2 associated with the raising and lowering mechanism of the upper platen 106 , is an upper platen trip rod 116 .
- the trip rod 116 is designed to activate a switch 111 when the upper platen is lowered to its desired position.
- the two switches 111 are connected to the electrical disconnect plug 126 to transmit appropriate signals to the controller 35 when the switches are actuated.
- the various electrical and hydraulic connections are not shown in the drawings.
- the lower platen 108 is supported on a lower platen lift cylinder 114 and lift cylinder shaft 130 .
- the lift cylinder 114 is operated to raise the lower platen to facilitate removal of a casting after the casting operation has been completed and the upper platen has been raised.
- the lift cylinder 114 is connected by means of hydraulic lines (not shown in the drawing) to the control valve 121 which, as mentioned earlier, is operated by electrical control signals from the controller 35 via the quick disconnect 126 and appropriate ones of the conductors 124 .
- the lower platen 108 is supported on guide rods 135 extending through bearings 136 .
- a trip rod 138 Connected to one of the guide rods 135 is a trip rod 138 which serves to actuate limit switches 139 , 140 to indicate the position of the lower platen.
- the limit switches are electrically connected by selected ones of the conductors 124 to quick disconnect 126 to provide an indication to the controller 35 of the position of the lower platen.
- FIG. 2 Further shown in FIG. 2 is a pair of oil pumps 142 and an oil supply reservoir 145 .
- the pumps and the reservoir, together with oil supply and return lines (not shown in the drawings) interconnecting the reservoir 145 , the pumps 142 and the bearings 119 , 120 and 136 are part of a closed bearing lubrication and cooling system in which oil is drawn from the reservoir 145 and supplied to the bearings by the pumps 142 under pressure and is returned to the reservoir.
- a lube cam 122 actuates the oil pump 142 which distributes the oil under pressure to the bearings 119 , 120 and 136 via oil supply lines and a series of standard distribution blocks (not shown in the drawings). The oil is returned from the bearings to the reservoir via the oil return lines to be reused.
- FIGS. 2 through 5 there is shown in FIG. 2 a filter element 150 in each of the casting units 102 , 104 .
- a molten substance such as a molten metal
- a filter element 150 is provided in alignment with such opening for filtering the molten metal.
- Such filter elements and the use thereof in the casting process are well known in the art.
- a filter removal unit 152 for lifting the filter element 150 during a pouring.
- the filter element 150 is initially disposed adjacent the upper platen and is gradually lifted by the filter removal unit 152 during the pouring operation. Lifting the filters during the pouring operation facilitates removal of the filters before the casting begins to solidify avoids a significant problem encountered in prior art systems wherein the filter is removed after the pouring operations has been completed.
- the filter removal unit 152 comprises a hydraulic lift cylinder 157 , mounted on cylinder support bracket 151 , and a piston rod 158 having a free end mounted to the frame 148 .
- the support bracket 151 comprises a pair of spaced apart lift arms 153 A, 153 B each pivotally mounted to an upstanding support bracket 163 mounted on the frame 148 .
- a chain 155 is connected from each of the lift arms to opposite sides of the filter element 150 .
- the cylinder 157 has fluid connections to control valve 121 and is operated in response to operation of the control valve 121 by controller 35 .
- FIG. 4A shows the filter removal unit 152 in the fully raised position and FIG.
- the cylinder 157 has a piston rod 158 having an end engaging a flattened surface 161 of a spherical rod eye 159 , which is pivotally mounted on pivot 160 by a bracket 166 supported in a clevis bracket 162 mounted to the frame 148 .
- Cylinder 157 is mounted to a cylinder pivot pin 164 by means of brackets 165 .
- the cylinder pivot pin 164 is rotationally mounted to end brackets 166 , along the pivot centerline 154 , to allow the cylinder support bracket 151 to pivot relative to the lift cylinder 157 between the positions shown in FIGS. 4A and 4B.
- the support bracket 161 is pivoted on pivot point 156 and the lift arms 153 A, B are moved between the raised and lowered positions as shown in FIGS. 4A and 4B, respectively.
- FIGS. 6 through 12 there is shown an alternate embodiment of casting units 102 , 104 .
- the casting unit 201 is provided with a swinging cope 203 which is rotatably attached to the upper platen 205 .
- the upper platen is supported on lift rods 217 extending through guides 210 and is shown in FIG. 6 in the raised position.
- the swinging cope 203 is supported on a pivot 207 on the upper platen 205 .
- a pair of spaced apart hydraulic or pneumatic cylinders 209 is operable to move the cope from the open position shown in FIGS. 6 to a closed position, as shown in FIGS.
- the cylinders 209 are each provided with a piston rod 240 having one end engaging the swinging cope at brackets 242 .
- Each of the cylinders 209 has a fixed end 244 mounted to the top surface of the upper platen 205 by means of a mounting bracket 246 .
- the cope 203 is disposed immediately adjacent the upper platen when the piston rod 240 is extended and is in the fall down position when the piston rod 240 is retracted.
- the cope 203 is retained in a locked position with respect to the upper platen 205 by means of a locking mechanism 248 .
- FIG. 10 shows the locking mechanism in the locked position and
- FIG. 11 shows it in the released position.
- the cope 203 is provided with a pair of pins 250 and a pneumatic or hydraulic cylinder 252 is used to actuate a pair of latches 254 , mounted on the upper platen 205 .
- the latches are pivotally mounted on the platen 205 by means of pivot pins 256 .
- the cylinder 252 is mounted to the two latches 254 by means of pivot pins 258 .
- the cylinder 252 is in the extended position, as shown in FIG. 11, the latches 254 are in the released position and the upper platen 203 may be lowered to the open position as shown in FIG. 6.
- the cylinder 252 is operated to the retracted position which causes the latches 254 to be rotated about the pivot pins 256 thereby engaging the pivot pins 250 and drawing the cope 203 against the upper platen 206 .
- FIGS. 6 through 9 Further shown in FIGS. 6 through 9 is a launder tray 220 .
- the launder tray 220 is pivotally mounted on axis 221 supported on a pair of spaced apart brackets 222 mounted to the upper platen 205 by fasteners 228 .
- the launder tray has a filler neck 225 engaging a filler opening 227 in the upper platen 205 A.
- a dual action lower cylinder arrangement 230 comprises an upper cylinder 231 for raising and lowering the lower platen and a lower cylinder 232 .
- the lower cylinder 232 engages a lower bracket 234 provided with vertically extending rods 235 and 236 engaging an upper bracket 238 .
- the bracket 238 is provided with vertically extending pins 236 extending into a lower portion of the lower platen 208 and engaging a plate 239 supporting pins 240 .
- the brackets 234 and 238 are raised and pins 240 , extending through openings in the lower platen, serve to raise the casting in the mold to facilitate removal of a casting from the mold.
- FIG. 12 Shown in FIG. 12 is an enlarged breakaway view of the lower platen lift mechanism with a casting removal assist mechanism shown is FIG. 6.
- An upper hydraulic or pneumatic cylinder 232 is mounted to cross-member 260 and, when operated, actuates the piston 262 to raise or lower the upper platen 205 , to facilitate removal of a casting from a mold 270 .
- a lower hydraulic or pneumatic cylinder 231 is mounted to the cylinder 232 by means of flanges 233 . When the lower cylinder 231 is actuated, a piston 264 raises a lower bracket 234 in the direction of the lower platen 208 .
- a pair of vertically extending rods 235 are mounted on the lower bracket 234 and engage an upper bracket 238 .
- FIG. 6 Further shown in FIG. 6 is a dual action lower cylinder 230 having an upper portion 231 for raising and lowering the lower platen and a lower portion 232 .
- the lower portion 232 engages a horizontally extending bar 234 provided with vertical members 235 and 236 engaging a upper horizontal bar 238 .
- the bar 238 is provided with vertically extending pins 239 extending into a lower portion of the lower platen 208 .
- the hydraulic cylinder 232 When the hydraulic cylinder 232 is actuated, the horizontal bars 234 and 238 are raised and the pins 240 extending through openings in the lower platen serve to eject the casting from the mold.
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Abstract
A modular casting system includes a plurality of casting modules and, is provided with on-board systems such as a lubrication system, cooling system, etc., which operate independently from similar systems on other modules of the system. Each of the casting modules is connected by quick disconnect connections to a centrally disposed source of fluid pressure and electrical power and a control unit for controlling each of the modules independently. Each of the modules is readily removable from the system and replaced with a new module of a different type or with a different mold. Each of the modules is preferably provided with a filter removal unit which is operative to raise of the filter during the cooling operation and facilities removal of the filter upon completion of the pouring operation. The casting modules are provided with a tilting launder tray which facilitates laundering of the mold after a casting operation. The upper platen of a casting module is provided with a swinging cope which is movable between a horizontal position and a vertical position to facilitate cleaning of the cope. The lower platen is preferably provided with a pneumatic hydraulic cylinder arrangement including a mechanism for raising the casting from the drag.
Description
- This is a divisional of application Ser. No. 09/362,150, filed Jul. 28, 1999.
- 2. Field of the Invention
- The invention relates to automated casting systems and more particularly to a casting system employing a plurality of casting units disposed on a rotating table or the like.
- 2. Background Art
- A casting system, besides a casting mold, typically includes a mechanism for opening and closing the mold and a variety of electrical, pneumatic, and/or hydraulic systems which serve to perform a variety of controlling functions in the overall molding process. Furthermore, lubrication systems and cooling systems may be required. A problem with prior art casting system is the difficulty encountered in substituting a different configuration mold in an existing system. Since molds of various different shapes and configurations may be required from time-to-time and connections for the various systems to control the molding apparatus may vary substantially between molds, the changeover from one set of molds to another results in significant and expensive downtime for the casting system. Such changeover may require re-routing of electrical cabling and connections for pneumatic and hydraulic as well as cooling systems. Furthermore, in typical prior art arrangement, a plurality of molds and the apparatus for opening and closing the molds are disposed on a rotating table or the like. In case of a breakdown or routine maintenance of the opening and closing mechanism for a particular mold or of the mold itself, the entire casting system must be shut down. Such a shut-down tends to be time-consuming since the system typically has to be cooled down for maintenance work and must be brought back to working temperature before operations can be resumed. A particular disadvantage of prior art systems is the costly downtime of the entire system for maintenance, repair or changeover of molds.
- Routine molding operations typically require that a filter used in the casting operation be removed and replace before a next pouring of the molten metal or the like. This is commonly done manually. In order to avoid introducing the necessary delays in the casting operation, the filter is typically removed as soon as possible after the previous pouring operation, often while it is still very hot. The filter removal can be both difficult and time-consuming. A further difficulty in the routine operation of a casting system is that the mold is preferably laundered after a casting operation and coated with a specialized coating prior to the next pouring. The functions of laundering and coating are typically performed manually and tend to be difficult and time consuming adding to the cost of the casting operation.
- A further difficulty in many casting operations is the removal of a casting from the mold, particularly from the drag of the mold, while the casting is hot.
- These and other problems of the prior art are overcome in accordance with this invention in a modularized system comprising a plurality of casting modules, each of which may be removed from a casting system, such as a rotating table casting system, without affecting the operation of other modules. Each module is provided with on-board systems such as a lubrication system, a cooling system, etc., which operate independently from similar systems on other modules. Each module is provided with quick-disconnect connectors for connection to a main source of electrical power, hydraulic pressure, etc. The modules are preferably interchangeable and a variety of different modules may be installed in one main system and can be readily exchanged as required by production demands, without significant system downtime.
- A particular advantage of the modular system is that a casting module may be removed and replaced in a relatively short period of time since only a few connections need to be made. Furthermore, periodic maintenance and repair of the modules may be performed off-line with a minimum of production line down-time.
- Advantageously, in accordance with another aspect of the invention, a casting module of the system may be replaced by another module which has not only been set up and tested off-line, also warmed up off-line to bring the unit up to the desired operating temperature. In a system in accordance with this invention, the replacement of a casting module requires the casting operation be interrupted only for a period of time sufficient to disconnect a number of quick-disconnects connections, remove the casting module by means of a fork lift or the like, replace the removed module with a preheated casting module and make the necessary quick-disconnect connections. Advantageously, since the new unit has been warmed up off-line and since the other units are not taken out of operation for an extended period of time, no significant system warn-up time is required and system downtime is reduced substantially.
- In accordance with another aspect of the invention, a casting unit is provided with a mechanism for mechanically removing a filter that is used in the casting process. In accordance with one specific aspect of the invention, the casting unit includes a pneumatic or hydraulic cylinder mounted on a pivoting bracket having spaced apart arms attachable by means of chain or the like to a filter to be removed. Advantageously, the filter may be raised during the pouring operation such that it is completely removed from the casting before the casting solidifies, thereby avoiding certain problems of the prior art associated with the removal of filters from a casting.
- In accordance with another aspect of the invention, a cope of a casting system provided with a tilting launder tray, preferably mounted on the upper platen, that is readily moved aside during the pouring operation and quickly put in the appropriate position to direct a laundering liquid into a filler neck of the upper platen.
- In accordance with another aspect of the invention, the upper platen of a casting system is provided with a swinging cope which is movable between the horizontal position, in which the cope is disposed adjacent a lower surface of the upper platen, and a vertical position in which the cope is extended at a 90 degree angle to the upper platen. Advantageously, the movable platen greatly facilitates cleaning of the cope prior to a next pouring operation. In one specific embodiment of the invention, the cope is movable between the horizontal and vertical positions by one or more hydraulic or pneumatic cylinders and a hydraulic or pneumatically operated locking mechanism is provided to lock the cope in place adjacent to the upper platen.
- In accordance with yet another aspect of the invention, the lower platen is advantageously provided with a pneumatic or hydraulic cylinder arrangement which serves to raise the lower platen for easier removal of a casting and is further provided with a mechanism for lifting a casting from the drag.
- FIG. 1 is a plan view of a casting table supporting a plurality of casting modules;
- FIG. 2 is a front elevational view of a casting module in accordance with the invention;
- FIGS. 3A and 3B are left and right elevational views, respectively, of the module FIG. 2;
- FIG. 4A and 4B depict enlarged breakaway views of a filter lift mechanism in accordance with the invention;
- FIG. 5 is a plan view of a bracket for mounting a filter lift cylinder in the mechanism of FIGS. 4A and 4B;
- FIG. 6 is a side elevational view of a casting unit which is an alternate embodiment of the casting unit of FIGS.2-5;
- FIG. 7 is a plan view along line7-7 of FIG. 6 showing a launder tray and a cope operating mechanism;
- FIG. 8 is a partial breakaway side elevational view of the casting unit at FIG. 6 showing the launder tray in an operating position;
- FIG. 9 is a partial breakaway side elevational view of the casting unit of FIG. 6 showing the
swinging cope 203 in the closed position; - FIGS. 10 and 11 are partial cutaway right elevational views of FIG. 6 showing the cope locking mechanism in locked and unlocked states, respectively; and
- FIG. 12 is a partial cutaway enlarged frontal elevational view of the dual action lower cylinder of FIG. 6.
- FIG. 1 is a plan view schematic representation of a rotatable casting table provided with a plurality of
casting modules 100 and acentral hub area 20 incorporating control and supply systems. The control and supply systems are connected to each of themodules 100 by means of control andsupply lines 25. Each of thecasting modules 100 is preferably connected to an associatedcontrol supply line 25 by means of a quick-disconnect connector 30. Thecentral hub area 20 preferably includes anelectronic controller 35, ahydraulic unit 40 providing hydraulic fluid under pressure, an air supply unit 45 providing air under pressure and anelectrical supply box 50. Thecontroller 35 may, for example, be a programmed logic array designed to provide electrical signals to various ones of thecasting modules 100 to operate various air and/or hydraulic valves and/or relays. The programmed logic array may also receive signals from thevarious units 100 indicative of certain operations, such as actuation of limit switches, etc. Theelectric box 50 provides electrical power to thevarious units 100, when required. A fillingstation 60 provides a source of molten material to be used in the castingmodules 100. The casting table 10 may be rotated to place acasting module 100 adjacent the fillingstation 60. Molten material may be transferred from the fillingstation 60 to a casting module disposed adjacent the filling station through atransfer conduit 65 or ladle or the like. - FIG. 2 is a frontal view of a
dual casting module 100 consisting of two independentlyoperable casting units upper platen 106 for supporting a cope of a mold (not shown in the drawing) and alower platen 108 for supporting a drag of a mold (not shown in the drawing). For the sake of clarity, one of the casting units is shown in the open position in which the upper platen is spaced apart from the lower platen and the other of the casting units is shown in a closed position in which the upper platen is disposed adjacent the lower platen. The twocasting units controller 35. By constructing dual unit casting modules, rather than single unit casting module, a substantial savings in construction material and system connections will be realized while obtaining modularity of the system. It will be apparent that single unit casting modules may be constructed as well. In one particular application, the dual casting modules are used to cast different parts of a unit to be assembled. A casting unit, such as thedual casting unit - The
upper platen 106, is moveable between a lowered position in which the cope of the mold (not shown in the drawing) supported on theupper platen 106 is disposed in immediately adjacent the drag of the mold (not shown in the drawing) supported on thelower platen 108, and a raised position in which the cope is spaced apart from the drag. When the cope is in the lowered position, the cope and the drag together form a mold ready to receive molten metal from a ladle or the like. The raising and lowering of theupper platen 106 is achieved by means of ahydraulic lift cylinder 112 having amovable shaft 113 connected to crossbeam 115. Thecross beam 115 is mounted to a pair oflift rods 117 extending from the cross beams 115 throughguides 110 to theupper platen 106.Upper guide bearings 119 andlower guide bearings 120 are provided on upper and lower ends, respectively, of theguides 110. The guide bearings are preferably provided with a wiper seal or the like engaging the surface of the guide rods and a lubricating oil may be provided to the bearings for purpose of cooling and lubrication. Thelift cylinders 112 are actuated via acontrol valve 121 which selectively applies hydraulic fluid under pressure fromhydraulic unit 40 to the upper and lower ends oflift cylinders 112 via hydraulicquick disconnect 122 andcontrol valve 121, thereby controlling the movement of theupper platen 106. Thecontrol valve 121 is actuated in response to signals fromcontroller 35 applied via electricalquick disconnect 126 andelectrical conductors 124. Further shown in FIG. 2, associated with the raising and lowering mechanism of theupper platen 106, is an upperplaten trip rod 116. Thetrip rod 116 is designed to activate aswitch 111 when the upper platen is lowered to its desired position. The twoswitches 111 are connected to theelectrical disconnect plug 126 to transmit appropriate signals to thecontroller 35 when the switches are actuated. For the sake of clarity, the various electrical and hydraulic connections are not shown in the drawings. - The
lower platen 108 is supported on a lowerplaten lift cylinder 114 and liftcylinder shaft 130. Thelift cylinder 114 is operated to raise the lower platen to facilitate removal of a casting after the casting operation has been completed and the upper platen has been raised. Thelift cylinder 114 is connected by means of hydraulic lines (not shown in the drawing) to thecontrol valve 121 which, as mentioned earlier, is operated by electrical control signals from thecontroller 35 via thequick disconnect 126 and appropriate ones of theconductors 124. Thelower platen 108 is supported onguide rods 135 extending throughbearings 136. Connected to one of theguide rods 135 is atrip rod 138 which serves to actuatelimit switches conductors 124 toquick disconnect 126 to provide an indication to thecontroller 35 of the position of the lower platen. - Further shown in FIG. 2 is a pair of oil pumps142 and an
oil supply reservoir 145. The pumps and the reservoir, together with oil supply and return lines (not shown in the drawings) interconnecting thereservoir 145, thepumps 142 and thebearings reservoir 145 and supplied to the bearings by thepumps 142 under pressure and is returned to the reservoir. When thelower platen 108 is lowered to the normal position for casting, alube cam 122 actuates theoil pump 142 which distributes the oil under pressure to thebearings - Referring now to FIGS. 2 through 5, there is shown in FIG. 2 a
filter element 150 in each of the castingunits upper platen 106. Afilter element 150 is provided in alignment with such opening for filtering the molten metal. Such filter elements and the use thereof in the casting process are well known in the art. In the partially cut-away right side elevational view of FIG. 3B there is shown afilter removal unit 152, for lifting thefilter element 150 during a pouring. Thefilter element 150 is initially disposed adjacent the upper platen and is gradually lifted by thefilter removal unit 152 during the pouring operation. Lifting the filters during the pouring operation facilitates removal of the filters before the casting begins to solidify avoids a significant problem encountered in prior art systems wherein the filter is removed after the pouring operations has been completed. - As shown in detail in FIGS. 4A, 4B and5, the
filter removal unit 152 comprises ahydraulic lift cylinder 157, mounted oncylinder support bracket 151, and apiston rod 158 having a free end mounted to theframe 148. Thesupport bracket 151 comprises a pair of spaced apart liftarms upstanding support bracket 163 mounted on theframe 148. Achain 155 is connected from each of the lift arms to opposite sides of thefilter element 150. Thecylinder 157 has fluid connections to controlvalve 121 and is operated in response to operation of thecontrol valve 121 bycontroller 35. FIG. 4A shows thefilter removal unit 152 in the fully raised position and FIG. 4B shows thefilter removal unit 152 in the fully lowered positions. Thecylinder 157 has apiston rod 158 having an end engaging a flattenedsurface 161 of aspherical rod eye 159, which is pivotally mounted onpivot 160 by abracket 166 supported in aclevis bracket 162 mounted to theframe 148.Cylinder 157 is mounted to acylinder pivot pin 164 by means ofbrackets 165. Thecylinder pivot pin 164 is rotationally mounted to endbrackets 166, along thepivot centerline 154, to allow thecylinder support bracket 151 to pivot relative to thelift cylinder 157 between the positions shown in FIGS. 4A and 4B. As thecylinder 157 is actuated, thesupport bracket 161 is pivoted onpivot point 156 and thelift arms 153A, B are moved between the raised and lowered positions as shown in FIGS. 4A and 4B, respectively. - Referring now to FIGS. 6 through 12, there is shown an alternate embodiment of casting
units upper platen 205. The upper platen is supported onlift rods 217 extending throughguides 210 and is shown in FIG. 6 in the raised position. The swinging cope 203 is supported on apivot 207 on theupper platen 205. A pair of spaced apart hydraulic orpneumatic cylinders 209 is operable to move the cope from the open position shown in FIGS. 6 to a closed position, as shown in FIGS. 8 and 9, in which theupper surface 204 of the cope 203 is disposed immediately adjacent thelower surface 206 of theupper platen 205. The lower surface of the cope is typically coated before each casting operation. In a production facility, such a coating may have to take place every three minutes. The swinging cope allows for quick and easy access for such coating purposes. - The
cylinders 209 are each provided with apiston rod 240 having one end engaging the swinging cope atbrackets 242. Each of thecylinders 209 has a fixedend 244 mounted to the top surface of theupper platen 205 by means of a mountingbracket 246. As readily apparent from the drawing, the cope 203 is disposed immediately adjacent the upper platen when thepiston rod 240 is extended and is in the fall down position when thepiston rod 240 is retracted. The cope 203 is retained in a locked position with respect to theupper platen 205 by means of alocking mechanism 248. FIG. 10 shows the locking mechanism in the locked position and FIG. 11 shows it in the released position. As shown in the drawing, the cope 203 is provided with a pair ofpins 250 and a pneumatic orhydraulic cylinder 252 is used to actuate a pair oflatches 254, mounted on theupper platen 205. The latches are pivotally mounted on theplaten 205 by means of pivot pins 256. Thecylinder 252 is mounted to the twolatches 254 by means of pivot pins 258. When thecylinder 252 is in the extended position, as shown in FIG. 11, thelatches 254 are in the released position and theupper platen 203 may be lowered to the open position as shown in FIG. 6. After thelower platen 203 has been rotated to the position shown in FIGS. 10 and 11, thecylinder 252 is operated to the retracted position which causes thelatches 254 to be rotated about the pivot pins 256 thereby engaging the pivot pins 250 and drawing the cope 203 against theupper platen 206. - Further shown in FIGS. 6 through 9 is a launder
tray 220. The laundertray 220 is pivotally mounted onaxis 221 supported on a pair of spaced apartbrackets 222 mounted to theupper platen 205 byfasteners 228. The launder tray has afiller neck 225 engaging afiller opening 227 in the upper platen 205A. Further shown in FIGS. 6 and 12 is a dual actionlower cylinder arrangement 230 comprises anupper cylinder 231 for raising and lowering the lower platen and alower cylinder 232. Thelower cylinder 232 engages alower bracket 234 provided with vertically extendingrods upper bracket 238. Thebracket 238 is provided with vertically extendingpins 236 extending into a lower portion of thelower platen 208 and engaging aplate 239 supportingpins 240. When thehydraulic cylinder 232 is actuated, thebrackets - Shown in FIG. 12 is an enlarged breakaway view of the lower platen lift mechanism with a casting removal assist mechanism shown is FIG. 6. An upper hydraulic or
pneumatic cylinder 232 is mounted to cross-member 260 and, when operated, actuates thepiston 262 to raise or lower theupper platen 205, to facilitate removal of a casting from amold 270. A lower hydraulic orpneumatic cylinder 231 is mounted to thecylinder 232 by means offlanges 233. When thelower cylinder 231 is actuated, apiston 264 raises alower bracket 234 in the direction of thelower platen 208. A pair of vertically extendingrods 235 are mounted on thelower bracket 234 and engage anupper bracket 238. Mounted on theupper bracket 238 are vertically extendingrods 236 which extend through thelower platen 208 and engage a horizontally extendingplate 239. Vertically extendingrods 240 are mounted onplate 239 and extend through the lower portion of the mold or drag. Whenlower cylinder 231 is actuated,rods 240 engage and raise a casting disposed on the drag to a position where it is lifted from engagement with the drag. Advantageously, this arrangement facilitates the removal of a casting from the drag. - Further shown in FIG. 6 is a dual action
lower cylinder 230 having anupper portion 231 for raising and lowering the lower platen and alower portion 232. Thelower portion 232 engages a horizontally extendingbar 234 provided withvertical members horizontal bar 238. Thebar 238 is provided with vertically extendingpins 239 extending into a lower portion of thelower platen 208. When thehydraulic cylinder 232 is actuated, thehorizontal bars pins 240 extending through openings in the lower platen serve to eject the casting from the mold. - It is to be understood that the above-described arrangement is merely illustrative of the application of the principles of the invention and that other arrangements may be devised by those skilled in the art without departing from the spirit and scope of the invention as defined by the appendant claims.
Claims (9)
1. A casting module comprising:
an upper platen for supporting cope adjacent the lower surface having an upper surface and a lower surface and a filler opening extending through the cope from the upper surface to lower surface;
a movable cope having an upper surface and a lower surface;
the movable cope being hingedly mounted to the upper platen adjacent the first end and movable between a closed position wherein the upper surface of the cope is disposed immediately adjacent the lower surface of the upper platen and an open position wherein the upper surface of the cope extends at approximately at a right angle to the lower surface of the upper platen.
2. The casting module in accordance with wherein the upper platen has first and second opposite sides and wherein the cope comprises a hinged end disposed adjacent the first end of the platen and a free end disposed adjacent the second end of the platen and at least one bracket disposed adjacent the hinged end, and wherein the module further comprises at least one fluid operated cylinder having one end mounted to the bracket and another end mounted to the upper platen adjacent the upper surface of the platen.
claim 1
3. The casting module in accordance with and further comprising a cope locking mechanism comprising:
claim 1
at least one locking pin mounted on the cope adjacent the free end of the cope;
a latch pivotally mounted on the second end of the platen for engaging the locking pin when the cope is in the closed position; and
a locking mechanism for selectively operating the latch.
4. The casting module in accordance with wherein the locking mechanism comprises a fluid cylinder for operating the latch.
claim 4
5. The casting module in accordance with wherein the cope locking mechanism comprises first and second locking pins mounted on the cope adjacent the free end of the cope and first and second latches mounted on the second end of the platen and the locking mechanism comprises a fluid cylinder having first and second opposite ends mounted to the first and second locking pins, respectively.
claim 3
6. A casting module comprising:
an upper platen having an upper surface and a lower surface for supporting a cope adjacent the lower surface and having first and second opposite ends;
a filler opening extending through the cope from the supper surface to the lower surface;
a launder tray having a fill end and a drain end;
the launder trying being pivotally mounted on the upper surface adjacent the first of the opposite ends, the launder tray having fill end adjacent the first of the opposite ends a drain opening disposed in alignment with the filler opening, whereby the launder tray is movable between a first position wherein the drain opening is in alignment with the filler opening for cope laundering purposes to a second position wherein the launder tray is disposed away from the filler opening, providing access to the filler opening for a casting operation.
7. The casting module in accordance with wherein the upper platen comprises a pair of spaced apart brackets disposed adjacent the first of the opposite ends and wherein the launder tray is pivotally mounted on the brackets.
claim 6
8. A casting module comprising:
a structural frame supporting an upper platen for supporting a cope of a casting mold and a lower platen for supporting a drag of a casting mold;
an upper lift cylinder for raising and lowering the upper platen between the first position in the upper platen as spaced apart from the lower platen and a second position wherein the upper platen is disposed adjacent the lower platen;
a lower platen lift cylinder having an upper piston for raising and lowering the lower platen between a first position for receiving a molten substance and a second position, raised with respect to the first position, to facilitate removal of a casting from the drag;
the lower cylinder comprising a lower piston connected to a cross bracket provided with upstanding rods engaging pins extending through a lower surface of the drag for the lower cylinder comprising a lower piston connected to a cross bracket provided with upstanding rods engaging pins extending through a lower surface of the drag for separating a casting from the drag.
9. A filter lift mechanism for use in a casting module having an upstanding frame and an upper platen disposed within the frame and an opening in the upper platen for receiving a molten substance and a filter having opposing sides and disposed above the upper platen for filtering the molten substance, the filter lift mechanism comprising:
a lift cylinder and filter lift frame and a connection linkage extending from the filter lift frame to the filter;
the frame having opposing side members, each of the opposing side members having one end mounted to the upstanding frame and a free end connected to one side of the filter;
the lift cylinder comprising a cylinder housing and a piston rod extending from the cylinder housing, one of the lift cylinder housing and the piston rod pivotally engaging each of the side member and another of the lift cylinder housing and the pivotally mounted to the upstanding frame.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/851,808 US20010035277A1 (en) | 1999-07-28 | 2001-05-09 | Module casting systems with shared controls |
US10/166,930 US6648058B2 (en) | 1999-07-28 | 2002-06-11 | Module casting systems with shared controls |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/362,150 US6425435B1 (en) | 1999-07-28 | 1999-07-28 | Module casting systems with shared controls |
US09/851,808 US20010035277A1 (en) | 1999-07-28 | 2001-05-09 | Module casting systems with shared controls |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/362,150 Division US6425435B1 (en) | 1999-07-28 | 1999-07-28 | Module casting systems with shared controls |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/166,930 Division US6648058B2 (en) | 1999-07-28 | 2002-06-11 | Module casting systems with shared controls |
Publications (1)
Publication Number | Publication Date |
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US20010035277A1 true US20010035277A1 (en) | 2001-11-01 |
Family
ID=23424882
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US09/362,150 Expired - Fee Related US6425435B1 (en) | 1999-07-28 | 1999-07-28 | Module casting systems with shared controls |
US09/851,808 Abandoned US20010035277A1 (en) | 1999-07-28 | 2001-05-09 | Module casting systems with shared controls |
US10/166,930 Expired - Fee Related US6648058B2 (en) | 1999-07-28 | 2002-06-11 | Module casting systems with shared controls |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US09/362,150 Expired - Fee Related US6425435B1 (en) | 1999-07-28 | 1999-07-28 | Module casting systems with shared controls |
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Application Number | Title | Priority Date | Filing Date |
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US10/166,930 Expired - Fee Related US6648058B2 (en) | 1999-07-28 | 2002-06-11 | Module casting systems with shared controls |
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US (3) | US6425435B1 (en) |
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EP3738694A1 (en) | 2019-05-14 | 2020-11-18 | Bühler AG | Hydraulic device for a pressure die casting machine |
EP3738693A1 (en) | 2019-05-14 | 2020-11-18 | Bühler AG | Pressure die-casting machine with energy frame |
CN111992689A (en) * | 2019-05-27 | 2020-11-27 | 昆山怡德鑫精密机械有限公司 | Automatic hydraulic edge trimmer |
CN112059149A (en) * | 2020-09-01 | 2020-12-11 | 中山市泽一照明科技有限公司 | Effectual energy-conserving material casting former of shaping |
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US6425435B1 (en) * | 1999-07-28 | 2002-07-30 | Hayes Lemmerz Equipment & Engineering, Inc. | Module casting systems with shared controls |
US6637498B1 (en) * | 2001-11-15 | 2003-10-28 | Hayes Lemmerz International | Modularized permanent molding machine with multiple molds |
US7240719B2 (en) * | 2004-09-08 | 2007-07-10 | Qx, Inc. | Die-casting systems and methods |
US7661457B2 (en) * | 2006-08-18 | 2010-02-16 | Wagstaff, Inc. | Gas flow control system for molten metal molds with permeable perimeter walls |
KR100981441B1 (en) | 2008-02-18 | 2010-09-13 | 김광철 | Turnable casting equipment |
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JP2022537488A (en) * | 2019-05-14 | 2022-08-26 | ビューラー アーゲー | Die casting machine with energy frame |
US11731191B2 (en) | 2019-05-14 | 2023-08-22 | Bühler AG | Die casting machine with energy frame |
JP7337195B2 (en) | 2019-05-14 | 2023-09-01 | ビューラー アーゲー | Die casting machine with energy frame |
US11794239B2 (en) | 2019-05-14 | 2023-10-24 | Bühler AG | Hydraulic device for a die casting machine |
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Also Published As
Publication number | Publication date |
---|---|
US6425435B1 (en) | 2002-07-30 |
US6648058B2 (en) | 2003-11-18 |
US20020166652A1 (en) | 2002-11-14 |
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Legal Events
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AS | Assignment |
Owner name: HAYES LEMMERZ EQUIPMENT & ENGINEERING, INC., MICHI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MACHESKE, ROBERT L.;MCKIBBEN, KENNETH D.;MINOR, DANIEL D.;AND OTHERS;REEL/FRAME:011884/0563;SIGNING DATES FROM 19990701 TO 19990722 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |