CN102773414A - No-riser casting machine - Google Patents
No-riser casting machine Download PDFInfo
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- CN102773414A CN102773414A CN2012100984533A CN201210098453A CN102773414A CN 102773414 A CN102773414 A CN 102773414A CN 2012100984533 A CN2012100984533 A CN 2012100984533A CN 201210098453 A CN201210098453 A CN 201210098453A CN 102773414 A CN102773414 A CN 102773414A
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Abstract
The invention relates to the field of casting, and particularly discloses a no-riser casting machine. The casting machine comprises a top beam, a bottom beam, a guide column, a feeding mechanism, a compaction mechanism, a sand box and a roller table. The feeding mechanism is used for feeding when solidifying a casting in the sand box; the compaction mechanism is used for compacting the sand box; the sand box is used for making a casting mould, and is placed in the set position on the floating roller table after combined pouring; a compaction cylinder pushes a middle beam to move down; a sprue plug on a pressure plate enters a runner to close the runner; and a feeding cylinder drives a pressure head to move down and enter a liquid storage cavity of the sand box to continuously apply pressure to the metal liquid in the liquid storage cavity until the whole casting is completely solidified and retracts. The no-riser casting machine provided by the invention has the advantages of high yield of casting technology, stable casting quality and wide application range.
Description
Technical field
The present invention relates to foundry machinery, relate in particular to a kind of head-free casting machine.
Background technology
Conventional cast must be provided with enough big rising head according to the consecutive solidification principle and come feeding, otherwise is difficult to eliminate shrink defects.Like this, not only product yield has only 60-70%, and rising head need cut and remelting, has brought the repetition loss of manpower, electric energy and material.In the existing invention technology, the method for spheroidal graphite cast-iron head-free casting is through meticulous design ingate size, and it is solidified before graphitization expansion, and the self-expanding that makes full use of the ductile iron solidification process is used for realizing head-free casting.This method often causes occurring shrink defects because of the fluctuation of factors such as molten iron temperature, chemical composition, and does not have the metal of setting expansion can not realize head-free casting for steel, non-ferrous metal.Extrusion casint of the prior art or liquid forging also can realize head-free casting, but it requires to use metal mould or casting mold, can't adapt to the production of intricate casting, and the device therefor requirement is high, costs an arm and a leg.In order to stablize the effect of head-free casting, enlarge the range of application of head-free casting, improve its function, reduce equipment manufacturing cost, the present invention has been proposed.
Summary of the invention
The technical problem that the present invention will solve provides a kind of casting machine that obtains the interior solid foundry goods of stablizing without rising head.
Head-free casting machine of the present invention comprises back timber, bottom girder, guide pillar, feeding mechanism, hold-down mechanism, sandbox and roller-way; Said back timber is set in parallel in the bottom girder top; Said guide pillar is arranged between back timber and the bottom girder; Said roller-way is arranged on the bottom girder, and said sandbox is arranged on the roller-way; Said sandbox is provided with die cavity, and is provided with the running channel that is communicated with die cavity, and the top of said die cavity also is provided with the liquid storage cylinder that is communicated with it; Said feeding mechanism comprises feeding cylinder and pressure head, and the cylinder body of said feeding cylinder is connected the back timber bottom surface, and said pressure head is connected with the piston rod of feeding cylinder, said pressure head be positioned at liquid storage cylinder directly over and can match with liquid storage cylinder; Said hold-down mechanism comprises hold-down cylinder, central sill and pressing plate; The cylinder body of said hold-down cylinder is connected the bottom surface of back timber; Said central sill is connected with the piston rod of hold-down cylinder; Said pressing plate is connected the bottom surface of central sill, and the bottom surface of said pressing plate is provided with pourer stopper, said pourer stopper be positioned at running channel directly over and can match with running channel.
Optional, said guide pillar is many, and guide pillar top symmetry is connected the below of back timber, and the two ends of said central sill are corresponding to be provided with a plurality of pilot holes, and said guide pillar passes the pilot hole posterior end corresponding with it respectively and is fixedly connected with bottom girder.
Optional, said hold-down mechanism comprises two hold-down cylinders, and the cylinder body of said two hold-down cylinders is connected to the bottom surface of back timber, and the piston rod of hold-down cylinder is connected with central sill respectively; Said sandbox comprises cope and the drag box that is arranged on the cope below, and the both sides of said cope, drag box are respectively arranged with locating hole; The two ends, bottom surface of said pressing plate are respectively arranged with the alignment pin that matches with said locating hole.
Optional, the middle part of said pressing plate is provided with through hole, and the piston rod of said hold-down cylinder passes said through hole.
Optional, be provided with cushion pad between said pressing plate and the said central sill.
Optional, said roller-way is the roller-way that floats, said unsteady roller-way comprises live-rollers, bracing frame and bearing block; Said bottom girder is provided with the bearing block mounting groove, and said bearing block is arranged in the bearing block mounting groove, and below said bearing block, is provided with leaf spring; Said live-rollers comprises live-rollers body and the connecting axle that is arranged on its two ends, and the connecting axle at said live-rollers two ends is separately positioned on the bearing block; Support frame as described above comprises supporting leg and the top that is connected with supporting leg, and said supporting leg is arranged on the bottom girder, and said connecting axle is positioned at the below at said top; When said feeding cylinder compressed sandbox, the top of said live-rollers body flushed with the top of bracing frame, and when said feeding cylinder was removed to the pressure of sandbox, the end face of said live-rollers was higher than the top of bracing frame.
Optional, be provided with the crossbar of the molding box in the said sandbox.
Optional, said back timber, central sill and bottom girder material are steel plate.
Optional, the length of said alignment pin is than the long 20-100mm of the locating hole degree of depth.
Optional, also comprise the control system that is used to control hold-down cylinder, feeding cylinder and roller-way work.
The head-free casting machine course of work of the present invention is: after making casting mold and mould assembly cast with sandbox, be placed on the desired location on the roller-way that floats; Hold-down cylinder promotion central sill is descending, and the alignment pin on the pressing plate at first inserts in the locating hole of sandbox, makes the sandbox accurate positioning, and the pourer stopper on the pressing plate gets in the running channel then, and with the running channel sealing, pressing plate is compacted to setting pressure with sand mold; Pressure head drives descending down at the feeding cylinder, through the hole of passing through on the pressing plate, in the entering sandbox liquid storage cylinder, solidify fully until whole foundry goods to wherein molten metal continu to press; Feeding cylinder backward stroke of the piston is extracted pressure head out liquid storage cylinder; Hold-down cylinder backward stroke of the piston drive central sill and pressing plate are up, extract pourer stopper and alignment pin out, remove the sandbox location, and the roller-way that floats is upspring sandbox, along roller-way sandbox and casting mold is shifted out.Above-mentioned action can be that manually control realizes, also can control completion automatically.
The present invention compares the beneficial effect that is had with prior art:
(1) casting process yield is high.The foundry goods that utilizes this invention to produce has not all had rising head, and the molten iron utilization rate is brought up to more than 90%;
(2) casting quality is stable: use the head-free casting machine of this invention, even generations such as chemical composition, pouring temperature, mold stiffness also can stably obtain not have the intact foundry goods of shrink defects than great fluctuation process.
(3) applied widely: the present invention does not receive the restriction of casting dimension, weight and chemical composition, not limited by the casting mold kind, can be adaptable across various foundry goods.Both can be used as unit and used, and also can be used as a unit and mix the use of conveyer composition production line.
Description of drawings
The whole overall construction drawing of Fig. 1 head-free casting machine of the present invention;
Fig. 2 is the structural representation of roller-way;
Fig. 3 is the A-A sectional structure sketch map of Fig. 2.
Mark is illustrated as among the figure: 1-back timber, 2-hold-down cylinder, 3-feeding cylinder, 4-central sill, 5-guide pillar, 6-liquid storage cylinder; The 7-cope, 8-drag box, 9-cushion pad, 10-alignment pin, 11-pressing plate; The 12-pourer stopper, 13-bottom girder, 14-live-rollers, 15-die cavity, 16-bearing block; The 17-leaf spring, 18-bracing frame, 19-pressure head, 20-locating hole, 21-running channel.
The specific embodiment
Specify the specific embodiment of the present invention below in conjunction with accompanying drawing.
Head-free casting machine of the present invention, its general structure comprise back timber 1, central sill 4, bottom girder 13, pressing plate 11, roller-way, guide pillar 5, hold-down cylinder 2, feeding cylinder 3 and sandbox float.
Described back timber 1, central sill 4 and bottom girder 13 are by steel plate welding or the good body structure of rigidity that formed by iron casting, and be parallel to each other.
Described guide pillar 5 usefulness solid cylinder steel or hollow circular-tube steel are processed, and two ends are threaded, and are perpendicular with bottom girder 13, back timber 1 and central sill 4, pass the pilot hole on the central sill 4, and two ends are connected firmly with back timber 1 and bottom girder 13 respectively, form rigidity good framework structure.
Described pressing plate 11 is bolted to through the T type on the lower plane of central sill, accompanies elastic buffering pad 9 between pressing plate 11 and the central sill 4, prevents that impulsive force is with the sand mold conquassation.The overall size of pressing plate 11 is a bit larger tham the special shape mo(u)lding box overall size, and its lower plane is the plane, can fit with plane on the cope 7; Pourer stopper 12 coaxial with running channel, that diameter is slightly littler than sprue diameter, profile and running channel adapt is installed on the lower plane; And leave the through hole that, profile 6 coaxial with the liquid storage cylinder of sand mold and size and pressure head 19 adapt; Symmetry is equipped with two alignment pins 10, and alignment pin length is greater than pourer stopper 12 length 20-100mm.
Described hold-down cylinder 2 is double acting hydraulic cylinders; Its cylinder power can produce the pressure of 0.5-5MPa on pressing plate 11, be vertically mounted on the back timber 1, and its piston rod and central sill 4 are connected firmly; Be used for driving central sill 4 and move up and down, provide or cancel thrust to sandbox with pressing plate 11; Stroke can be set and regulate.
Described feeding cylinder 3 is double acting hydraulic cylinders, and its cylinder power can be set and regulated between the 1-100 ton, is vertically mounted on the back timber 1, and its piston rod front end leaves and can bear the screw connection structure that pulling force is 1/2 cylinder power;
Described unsteady roller-way is made up of live-rollers 14, bearing block 16, bracing frame 18 and leaf spring 17; Be installed on the bottom girder 13 on the plane; The interior spacing of its outer profile size and guide pillar 5 adapts; Last plane is used for laying special shape mo(u)lding box, and the bearing block 16 of live-rollers 14 is installed on the leaf spring 17, and leaf spring 17 is installed on the bottom girder 13; When not applying thrust, live-rollers 14 is in upper, contacts with drag box 8 bottom surfaces of sandbox, and the bracing frame 18 of live-rollers 14 both sides is more lower slightly than live-rollers 14 peaks, does not contact with sandbox; When sandbox was applied thrust, leaf spring 17 was compressed, and live-rollers 14 descends, and the end face of the bracing frame 18 of live-rollers 14 both sides is concordant with the peak of live-rollers 14, and bracing frame 18 is simultaneously stressed with live-rollers 14, the together support sandbox.
Sandbox is made up of cope 7 and drag box 8, cylinder iron processes, and top and bottom are parallel.Be provided with two locating holes 20 and the necessary crossbar of the molding box of symmetrical distribution, can bear maximum pressure and obvious distortion does not take place; The inner die cavity 15 and liquid storage cylinder 6 that forms foundry goods and running channel 21 of processing with molding sand.
The head-free casting machine course of work of the present invention is: after making casting mold and mould assembly cast with sandbox, be placed on the desired location on the roller-way that floats; It is descending that hold-down cylinder 2 promotes central sill 4; Alignment pin 10 on the pressing plate 11 at first inserts in the locating hole 20 of sandbox, makes the sandbox accurate positioning, and the pourer stopper on the pressing plate 11 12 gets in the running channel 21 then; With running channel 21 sealings, pressing plate 11 is compacted to setting pressure with cope 7 and drag box 8; It is descending that feeding cylinder 3 drives pressure heads 19, through the through hole on the pressing plate 11, gets in the sandbox liquid storage cylinder 6, solidifies fully until whole foundry goods to wherein molten metal continu to press; Feeding cylinder 3 backwards stroke of the piston are extracted pressure head 19 out liquid storage cylinder 6; It is up with pressing plate 11 that hold-down cylinder 2 backwards stroke of the piston drive central sill 4, extracts pourer stopper 12 and alignment pin 12 out, removes the sandbox location, and the roller-way that floats is upspring sandbox, along roller-way sandbox and casting mold is shifted out.Above-mentioned action can be that manually control realizes, also can control completion automatically.
Head-free casting machine of the present invention, its general structure is made up of back timber 1, central sill 4, bottom girder 13, pressing plate 11, float roller-way, guide pillar 5, hold-down cylinder 2, feeding cylinder 3 and sandbox.
Described back timber 1, central sill 4 and bottom girder 13 are the good body structure of rigidity that is welded by steel plate, and be parallel to each other.
Described guide pillar 5 usefulness hollow circular-tube steel are processed, and two ends are threaded, and are perpendicular with bottom girder 13, back timber 1 and central sill 4, pass central sill 4, and two ends are connected firmly with back timber 1 and bottom girder 13 respectively, form rigidity good framework structure.
Described pressing plate 11 is bolted to through the T type on the lower plane of central sill, accompanies elastic buffering pad 9 between pressing plate 11 and the central sill 4, prevents that impulsive force is with the sand mold conquassation.The overall size of pressing plate 11 is a bit larger tham the special shape mo(u)lding box overall size, and its lower plane is the plane, can fit with plane on the cope 7; Pourer stopper 12 coaxial with running channel, that diameter is slightly littler than running channel diameter, profile and running channel adapt is installed on the lower plane; And leave the hole of passing through that, profile 6 coaxial with the liquid storage cylinder of sand mold and size and pressure head 19 adapt; Symmetry is equipped with two alignment pins 10, and alignment pin length is greater than pourer stopper 12 length 20mm.
Described hold-down cylinder 2 is double acting hydraulic cylinders; Its cylinder power can produce the pressure of 0.5MPa on pressing plate 11, be vertically mounted on the back timber 1, and its piston rod and central sill 4 are connected firmly; Be used for driving central sill 4 and move up and down, provide or cancel thrust to special shape mo(u)lding box with pressing plate 11; Stroke can be set and regulate.
Described feeding cylinder 3 is double acting hydraulic cylinders, and its cylinder power can be set between the 1-5 ton.Present embodiment is set at 1 ton, is vertically mounted on the back timber 1, and its piston rod front end leaves the screw connection structure that can bear 2.5 tons of pulling force.
Described unsteady roller-way is made up of live-rollers 14, bearing block 16, bracing frame 18 and leaf spring 17; Be installed on the bottom girder 13 on the plane; The interior spacing of its outer profile size and guide pillar 5 adapts; Last plane is used for laying sandbox, and the bearing block 16 of live-rollers 14 is installed on the leaf spring 17, and leaf spring 17 is installed on the bottom girder 13; When not applying thrust, live-rollers 14 is in upper, contacts with drag box 8 bottom surfaces of sandbox, and the bracing frame 18 of live-rollers 14 both sides is more lower slightly than live-rollers 14 peaks, does not contact with sandbox; When sandbox was applied thrust, leaf spring 17 was compressed, and live-rollers 14 descends, and the end face of the bracing frame 18 of live-rollers 14 both sides is concordant with live-rollers 14 peaks, and bracing frame 18 is simultaneously stressed with live-rollers 14, the together support sandbox.
Special shape mo(u)lding box is made up of cope 7 and drag box 8, cylinder iron processes, and top and bottom are parallel.Be provided with two locating holes 20 and the necessary crossbar of the molding box of symmetrical distribution, can bear maximum pressure and obvious distortion does not take place; The inner die cavity 15 and liquid storage cylinder 6 that forms foundry goods and running channel 21 of processing with molding sand.
The head-free casting machine course of work of the present invention is: after making casting mold and mould assembly cast with special shape mo(u)lding box, be placed on the desired location on the roller-way that floats; It is descending that hold-down cylinder 2 promotes central sill 4; Alignment pin 10 on the pressing plate 11 at first inserts in the locating hole 20 of sandbox, makes the sandbox accurate positioning, and the pourer stopper on the pressing plate 11 12 gets in the running channel 21 then; With running channel 21 sealings, pressing plate 11 is compacted to setting pressure with cope 7 and drag box 8; It is descending that feeding cylinder 3 drives pressure heads 19, through the hole of pass through on the pressing plate 11, in the entering sandbox liquid storage cylinder 6, solidifies fully until whole foundry goods to wherein molten metal continu to press; Feeding cylinder 3 backwards stroke of the piston are extracted pressure head 19 out liquid storage cylinder 6; It is up with pressing plate 11 that hold-down cylinder 2 backwards stroke of the piston drive central sill 4, extracts pourer stopper 12 and alignment pin 20 out, removes the sandbox location, and the roller-way that floats is upspring sandbox, along roller-way special shape mo(u)lding box and casting mold is shifted out.Above-mentioned action is manually controlled realization through control button, utilizes the steel-casting of this head-free casting machine production not have rising head, and the molten iron utilization rate has reached 95%.
Head-free casting machine of the present invention, its general structure is made up of back timber 1, central sill 4, bottom girder 13, pressing plate 11, float roller-way, guide pillar 5, hold-down cylinder 2, feeding cylinder 3 and special shape mo(u)lding box.
Described back timber 1, central sill 4 and bottom girder 13 are the good body structure of rigidity that is formed by iron casting, and be parallel to each other.
Described guide pillar 5 usefulness solid cylinder steel are processed, and two ends are threaded, and are perpendicular with bottom girder 13, back timber 1 and central sill 4, pass central sill 4, and two ends are connected firmly with back timber 1 and bottom girder 13 respectively, form rigidity good framework structure.
Described pressing plate 11 is bolted to through the T type on the lower plane of central sill, accompanies elastic buffering pad 9 between pressing plate 11 and the central sill 4, prevents that impulsive force is with the sand mold conquassation.The overall size of pressing plate 11 is a bit larger tham the special shape mo(u)lding box overall size, and its lower plane is the plane, can fit with plane on the cope 7; Pourer stopper 12 21 coaxial with running channel, that diameter is slightly littler than running channel 21 diameters, profile and running channel 21 adapt is installed on the lower plane; And leave the hole of passing through that, profile 6 coaxial with the liquid storage cylinder of sand mold and size and pressure head 19 adapt; Symmetry is equipped with two alignment pins 10, and alignment pin 10 length are greater than pourer stopper 12 length 60mm.
Described hold-down cylinder 2 is double acting hydraulic cylinders, and its cylinder power can produce the pressure of 3MPa on pressing plate 11, be vertically mounted on the back timber 1, and its piston rod and central sill 4 are connected firmly, and is used for driving central sill 4 and moves up and down with pressing plate 11, provides or cancel thrust to sandbox; Stroke can be set and regulate.
Described feeding cylinder 3 is double acting hydraulic cylinders, and its cylinder power can be set and regulated between the 1-50 ton, is vertically mounted on the back timber 1, and its piston rod front end leaves and can bear the screw connection structure that pulling force is 25 cylinder power;
Described unsteady roller-way is made up of live-rollers 14, bearing block 16, bracing frame 18 and leaf spring 17; Be installed on the bottom girder 13 on the plane; The interior spacing of its outer profile size and guide pillar 5 adapts; Last plane is used for laying sandbox, and the bearing block 16 of live-rollers 14 is installed on the leaf spring 17, and leaf spring 17 is installed on the bottom girder 13; When not applying thrust, live-rollers 14 is in upper, contacts with drag box 8 bottom surfaces of sandbox, and the bracing frame 18 of live-rollers 14 both sides is more lower slightly than live-rollers 14 peaks, does not contact with sandbox; When sandbox was applied thrust, leaf spring 17 was compressed, and live-rollers 14 descends, and the end face of the bracing frame 18 of live-rollers 14 both sides is concordant with live-rollers 14 peaks, and bracing frame 18 is simultaneously stressed with live-rollers 14, the together support sandbox.
Special shape mo(u)lding box is made up of cope 7 and drag box 8, cylinder iron processes, and top and bottom are parallel.Be provided with two locating holes 20 and the necessary crossbar of the molding box of symmetrical distribution, can bear maximum pressure and obvious distortion does not take place; The inner die cavity 15 and liquid storage cylinder 6 that forms foundry goods and running channel 21 of processing with molding sand.
A kind of head-free casting machine of the present invention course of work is: after making casting mold and mould assembly cast with sandbox, be placed on the desired location on the roller-way that floats; It is descending that hold-down cylinder 2 promotes central sill 4; Alignment pin 10 on the pressing plate 11 at first inserts in the locating hole 20 of sandbox, makes the sandbox accurate positioning, and the pourer stopper on the pressing plate 11 12 gets in the running channel 21 then; With running channel 21 sealings, pressing plate 11 is compacted to setting pressure with cope 7 and drag box 8; It is descending that feeding cylinder 3 drives pressure heads 19, through the through hole on the pressing plate 11, gets in the sandbox liquid storage cylinder 6, solidifies fully until whole foundry goods to wherein molten metal continu to press; Feeding cylinder 3 backwards stroke of the piston are extracted pressure head 19 out liquid storage cylinder 6; It is up with pressing plate 11 that hold-down cylinder 2 backwards stroke of the piston drive central sill 4, extracts pourer stopper 12 and alignment pin 10 out, removes the special shape mo(u)lding box location, and the roller-way that floats is upspring sandbox, along roller-way sandbox and casting mold is shifted out.Above-mentioned action has the PLC procedure auto-control to accomplish.
Head-free casting machine of the present invention, its general structure comprise back timber 1, central sill 4, bottom girder 13, pressing plate 11, roller-way, guide pillar 5, hold-down cylinder 2, feeding cylinder 3 and sandbox float.
Described back timber 1, central sill 4 and bottom girder 13 are the good body structure of rigidity that is welded by steel plate, and be parallel to each other.
Described guide pillar 5 usefulness hollow circular-tube steel are processed, and two ends are threaded, and are perpendicular with bottom girder 13, back timber 1 and central sill 4, pass central sill 4, and two ends are connected firmly with back timber 1 and bottom girder 13 respectively, form rigidity good framework structure.
Described pressing plate 11 is bolted to through the T type on the lower plane of central sill, accompanies elastic buffering pad 9 between pressing plate 11 and the central sill 4, prevents that impulsive force is with the sand mold conquassation.The overall size of pressing plate 11 is a bit larger tham the special shape mo(u)lding box overall size, and its lower plane is the plane, can fit with plane on the cope 7; Pourer stopper 12 21 coaxial with running channel, that diameter is slightly littler than running channel 21 diameters, profile and running channel 21 adapt is installed on the lower plane; And leave the hole of passing through that, profile 6 coaxial with the liquid storage cylinder of sand mold and size and pressure head 19 adapt; Symmetry is equipped with two alignment pins 10, and alignment pin length is greater than pourer stopper 12 length 100mm.
Described hold-down cylinder 2 is double acting hydraulic cylinders; Its cylinder power can produce the pressure of 5MPa on pressing plate 11, be vertically mounted on the back timber 1, and its piston rod and central sill 4 are connected firmly; Be used for driving central sill 4 and move up and down, provide or cancel thrust to special shape mo(u)lding box with pressing plate 11; Stroke can be set and regulate.
Described feeding cylinder 3 is double acting hydraulic cylinders, and its cylinder power can be set and regulated between the 1-100 ton, is vertically mounted on the back timber 1, and its piston rod front end leaves, and to bear pulling force be 50 tons screw connection structure;
Described unsteady roller-way is made up of live-rollers 14, bearing block 16, bracing frame 18 and leaf spring 17; Be installed on the bottom girder 13 on the plane; The interior spacing of its outer profile size and guide pillar 5 adapts; Last plane is used for laying special shape mo(u)lding box, and the bearing block 16 of roller 14 is installed on the leaf spring 17, and leaf spring 17 is installed on the bottom girder 13; When not applying thrust, live-rollers 14 is in upper, contacts with drag box 8 bottom surfaces of sandbox, and the bracing frame 18 of live-rollers 14 both sides is more lower slightly than live-rollers 14 peaks, does not contact with sandbox; When sandbox was applied thrust, leaf spring 17 was compressed, and live-rollers 14 descends, and the end face of the bracing frame 18 of live-rollers 14 both sides is concordant with live-rollers 14 peaks, and bracing frame 18 is simultaneously stressed with live-rollers 14, the together support sandbox.
Special shape mo(u)lding box is made up of cope 7 and drag box 8, cylinder iron processes, and top and bottom are parallel.Be provided with two locating holes 20 and the necessary crossbar of the molding box of symmetrical distribution, can bear maximum pressure and obvious distortion does not take place; The inner die cavity 15 and liquid storage cylinder 6 that forms foundry goods and running channel 21 of processing with molding sand.
A kind of head-free casting machine of the present invention course of work is: after making casting mold and mould assembly cast with special shape mo(u)lding box, be placed on the desired location on the roller-way that floats; It is descending that hold-down cylinder 2 promotes central sill 4; Alignment pin 10 on the pressing plate 11 at first inserts in the locating hole 20 of sandbox, makes the sandbox accurate positioning, and the pourer stopper on the pressing plate 11 12 gets in the running channel 21 then; With running channel 21 sealings, pressing plate 11 is compacted to setting pressure with cope 7 and drag box 8; It is descending that feeding cylinder 3 drives pressure heads 19, through the through hole on the pressing plate 11, gets in the sandbox liquid storage cylinder 6, solidifies fully until whole foundry goods to wherein molten metal continu to press; Feeding cylinder 3 backwards stroke of the piston are extracted pressure head 19 out liquid storage cylinder 6; It is up with pressing plate 11 that hold-down cylinder 2 backwards stroke of the piston drive central sill 4, extracts pourer stopper 12 and alignment pin 10 out, removes the sandbox location, and the roller-way that floats is upspring special shape mo(u)lding box, along roller-way sandbox and casting mold is shifted out.Above-mentioned action is accomplished by the PLC procedure auto-control.
Head-free casting machine of the present invention, its general structure comprise back timber 1, central sill 4, bottom girder 13, pressing plate 11, roller-way, guide pillar 5, hold-down cylinder 2, feeding cylinder 3 and special shape mo(u)lding box float.
Described back timber 1, central sill 4 and bottom girder 13 are the good body structure of rigidity that is welded by steel plate, and be parallel to each other.
Described guide pillar 5 usefulness hollow circular-tube steel are processed, and two ends are threaded, and are perpendicular with bottom girder 13, back timber 1 and central sill 4, pass central sill 4, and two ends are connected firmly with back timber 1 and bottom girder 13 respectively, form rigidity good framework structure.
Described pressing plate 11 is bolted to through the T type on the lower plane of central sill, accompanies elastic buffering pad 9 between pressing plate 11 and the central sill 4, prevents that impulsive force is with the sand mold conquassation.The overall size of pressing plate 11 is a bit larger tham the special shape mo(u)lding box overall size, and its lower plane is the plane, can fit with plane on the cope 7; Pourer stopper 12 21 coaxial with running channel, that diameter is slightly littler than running channel 21 diameters, profile and running channel 21 adapt is installed on the lower plane; And leave the hole of passing through that, profile 6 coaxial with the liquid storage cylinder of sand mold and size and pressure head 19 adapt; Symmetry is equipped with two alignment pins 10, and alignment pin length is greater than pourer stopper 12 length 100mm.
Described hold-down cylinder 2 is double acting hydraulic cylinders; Its cylinder power can produce the pressure of 5MPa on pressing plate 11, be vertically mounted on the back timber 1, and its piston rod and central sill 4 are connected firmly; Be used for driving central sill 4 and move up and down, provide or cancel thrust to special shape mo(u)lding box with pressing plate 11; Stroke can be set and regulate.
Described feeding cylinder 3 is double acting hydraulic cylinders, and its cylinder power can be set and regulated between the 1-100 ton, is vertically mounted on the back timber 1, and its piston rod front end leaves, and to bear pulling force be 50 tons screw connection structure;
Described unsteady roller-way is made up of live-rollers 14, bearing block 16, bracing frame 18 and leaf spring 17; Be installed on the bottom girder 13 on the plane; The interior spacing of its outer profile size and guide pillar 5 adapts; Last plane is used for laying sandbox, and the bearing block 16 of live-rollers 14 is installed on the leaf spring 17, and leaf spring 17 is installed on the bottom girder 13; When not applying thrust, live-rollers 14 is in upper, contacts with drag box 8 bottom surfaces of sandbox, and the bracing frame 18 of live-rollers 14 both sides is more lower slightly than live-rollers 14 peaks, does not contact with sandbox; When sandbox was applied thrust, leaf spring 17 was compressed, and live-rollers 14 descends, and the end face of the bracing frame 18 of live-rollers 14 both sides is concordant with live-rollers 14 peaks, and bracing frame 18 is simultaneously stressed with live-rollers 14, the together support sandbox.
Special shape mo(u)lding box is made up of cope 7 and drag box 8, cylinder iron processes, and top and bottom are parallel.Be provided with two locating holes 20 and the necessary crossbar of the molding box of symmetrical distribution, can bear maximum pressure and obvious distortion does not take place; The inner die cavity 15 and liquid storage cylinder 6 that forms foundry goods and running channel 21 of processing with molding sand.
Head-free casting machine of the present invention is formed automatic production line as a unit of production line and is used; This unit is made up of 4 head-free casting machines; There is a strip transmission line at every head-free casting machine the place ahead and rear; Be used for sandbox is sent into the head-free casting machine and shifted out the head-free casting machine, these pipelines are connected with full-automatic foundry production line.Its course of work is: behind moulding on the automatic mo(u)lding line and mould assembly, after delivering to cast the Ministry of worker pours into a mould by pipeline, send into the desired location on the roller-way that floats by pipeline with special shape mo(u)lding box; It is descending that hold-down cylinder 2 promotes central sill 4; Alignment pin 10 on the pressing plate 11 at first inserts in the locating hole 20 of sandbox, makes the sandbox accurate positioning, and the pourer stopper on the pressing plate 11 12 gets in the sprue 21 then; With sprue 21 sealings, pressing plate 11 is compacted to setting pressure with cope 7 and drag box 8; It is descending that feeding cylinder 3 drives pressure heads 19, through the hole of pass through on the pressing plate 11, in the entering sandbox liquid storage cylinder 6, solidifies fully until whole foundry goods to wherein molten metal continu to press; Feeding cylinder 3 backwards stroke of the piston are extracted pressure head 19 out liquid storage cylinder 6; It is up with pressing plate 11 that hold-down cylinder 2 backwards stroke of the piston drive central sill 4, extracts pourer stopper 12 and alignment pin 12 out, removes the special shape mo(u)lding box location; The roller-way that floats is upspring special shape mo(u)lding box; Along roller-way special shape mo(u)lding box and casting mold are shifted out, get into the good fortune pipeline, send into fettler clan sand after; Special shape mo(u)lding box is taken out by manipulator and sends into pipeline and recycle, and transports the fettling shop polishing of testing after foundry goods is grasped by manipulator.Above-mentioned action is accomplished by automatic controlling system automatically.
What should explain at last is: above embodiment and specific embodiment be only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned embodiments and specific embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned embodiments is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make essence disengaging each embodiment of the present invention of relevant art scheme and the spirit and the scope of specific embodiment technical scheme.
Claims (10)
1. a head-free casting machine is characterized in that: comprise back timber, bottom girder, guide pillar, feeding mechanism, hold-down mechanism, sandbox and roller-way; Said back timber is set in parallel in the bottom girder top; The two ends of said guide pillar are connected with bottom girder with back timber respectively; Said roller-way is arranged on the bottom girder, and said sandbox is arranged on the roller-way; Said sandbox is provided with die cavity, and is provided with the running channel that is communicated with die cavity, and the top of said die cavity also is provided with the liquid storage cylinder that is communicated with it; Said feeding mechanism comprises feeding cylinder and pressure head, and the cylinder body of said feeding cylinder is connected the back timber bottom surface, and said pressure head is connected with the piston rod of feeding cylinder, said pressure head be positioned at liquid storage cylinder directly over and can match with liquid storage cylinder; Said hold-down mechanism comprises hold-down cylinder, central sill and pressing plate; The cylinder body of said hold-down cylinder is connected the bottom surface of back timber; Said central sill is connected with the piston rod of hold-down cylinder; Said pressing plate is connected the bottom surface of central sill, and the bottom surface of said pressing plate is provided with pourer stopper, said pourer stopper be positioned at running channel directly over and can match with running channel.
2. head-free casting machine according to claim 1 is characterized in that: said guide pillar is many, and said central sill is corresponding to be provided with a plurality of pilot holes, and said guide pillar passes the pilot hole posterior end corresponding with it respectively and is fixedly connected with bottom girder.
3. head-free casting machine according to claim 1 and 2 is characterized in that: said hold-down mechanism comprises two hold-down cylinders, and the cylinder body of said two hold-down cylinders is connected to the bottom surface of back timber, and the piston rod of hold-down cylinder is connected with central sill respectively; Said sandbox comprises cope and the drag box that is arranged on the cope below, and the both sides of said cope, drag box are respectively arranged with locating hole; The two ends, bottom surface of said pressing plate are respectively arranged with the alignment pin that matches with said locating hole.
4. head-free casting machine according to claim 1 and 2 is characterized in that: the middle part of said pressing plate is provided with through hole, and the piston rod of said hold-down cylinder passes said through hole.
5. head-free casting machine according to claim 1 and 2 is characterized in that: be provided with cushion pad between said pressing plate and the said central sill.
6. head-free casting machine according to claim 1 and 2 is characterized in that: said roller-way is the roller-way that floats, and said unsteady roller-way comprises live-rollers, bracing frame and bearing block; Said bottom girder is provided with the bearing block mounting groove, and said bearing block is arranged in the bearing block mounting groove, and below said bearing block, is provided with leaf spring; Said live-rollers comprises live-rollers body and the connecting axle that is arranged on its two ends, and the connecting axle at said live-rollers two ends is separately positioned on the bearing block; Support frame as described above comprises supporting leg and the top that is connected with supporting leg, and said supporting leg is arranged on the bottom girder, and said connecting axle is positioned at the below at said top; When said feeding cylinder compressed sandbox, the top of said live-rollers body flushed with the top of bracing frame, and when said feeding cylinder was removed to the pressure of sandbox, the end face of said live-rollers was higher than the top of bracing frame.
7. head-free casting machine according to claim 1 and 2 is characterized in that: be provided with the crossbar of the molding box in the said sandbox.
8. head-free casting machine according to claim 1 and 2 is characterized in that: said back timber, central sill and bottom girder material are steel plate.
9. head-free casting machine according to claim 1 and 2 is characterized in that: the length of said alignment pin is than the long 20-100mm of the locating hole degree of depth.
10. head-free casting machine according to claim 1 and 2 is characterized in that: also comprise the control system that is used to control hold-down cylinder, feeding cylinder and roller-way work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210098453.3A CN102773414B (en) | 2012-04-06 | 2012-04-06 | No-riser casting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210098453.3A CN102773414B (en) | 2012-04-06 | 2012-04-06 | No-riser casting machine |
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| CN102773414A true CN102773414A (en) | 2012-11-14 |
| CN102773414B CN102773414B (en) | 2014-08-27 |
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| CN201210098453.3A Expired - Fee Related CN102773414B (en) | 2012-04-06 | 2012-04-06 | No-riser casting machine |
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Cited By (4)
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| CN108637222A (en) * | 2018-03-30 | 2018-10-12 | 常州卡斯特铝精密铸造科技有限公司 | Aluminum casting sand recovery of circulatory system |
| CN111702133A (en) * | 2020-06-23 | 2020-09-25 | 马鞍山常裕机械设备有限公司 | Pressure equipment for riser |
| CN111891502A (en) * | 2020-08-11 | 2020-11-06 | 周晓杰 | Quick positioner of open packing carton |
| CN111993694A (en) * | 2020-08-28 | 2020-11-27 | 义乌市华彪包装有限公司 | Packing carton integrated into one piece device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102773414B (en) | 2014-08-27 |
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