CN110802200A - Sand core mould and casting mould for preparing sand core mould - Google Patents
Sand core mould and casting mould for preparing sand core mould Download PDFInfo
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- CN110802200A CN110802200A CN201911190112.7A CN201911190112A CN110802200A CN 110802200 A CN110802200 A CN 110802200A CN 201911190112 A CN201911190112 A CN 201911190112A CN 110802200 A CN110802200 A CN 110802200A
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- groove
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- movable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/062—Mechanisms for locking or opening moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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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
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of casting, and particularly relates to a sand core mold and a casting mold for preparing the sand core mold, wherein the sand core mold comprises a base, the center of the base is provided with a pouring gate and a molding groove, the periphery of the molding groove is provided with a cooling unit, and the cooling unit comprises a liquid inlet and a liquid outlet; the diameter of the liquid inlet is larger than that of the liquid outlet, so that the liquid inlet can be wide and narrow, and the cooling efficiency of the forming groove is improved. The casting mould for preparing the sand core mould comprises a workbench, a movable mould and a fixed mould; the moving stability of the movable die can be improved through the plurality of screw rods, and the phenomenon that the movable die is offset is avoided; when the movable die is completely attached to the fixed die, the movable die presses the touch switch on the fixed die, then the controller immediately stops the motor from rotating, the motor stops rotating, and the movable die does not move downwards any more, so that the movable die is stopped in time, and the movable die is prevented from destructively extruding the fixed die.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to a sand core mold and a casting mold for preparing the sand core mold.
Background
The casting mould is characterized in that in order to obtain the structural shape of a part, other easily-formed materials are made into the structural shape of the part in advance, then the mould is placed in a sand mould, so that a cavity with the same structural size as the part is formed in the sand mould, then a fluid liquid is poured into the cavity, and the liquid is cooled and solidified to form the part with the same structural shape as the mould; casting molds are an important part of the casting process.
The prior art is when casting the mould, and the casting finished product can the adhesion in the mould, leads to the casting finished product to be difficult to take out from the mould to and take out the casting finished product after, can remain the corner burr in the mould, cause production staff's in time to clear up the residue in the mould, aggravate production staff's task.
Disclosure of Invention
The invention provides a sand core mould and a casting mould for preparing the sand core mould, aiming at overcoming the defects of the prior art and solving the problems that a cast finished product is adhered in a mould, so that the cast finished product is difficult to take out of the mould and corner burrs are left in the mould after the cast finished product is taken out.
The technical scheme adopted by the invention for solving the technical problems is as follows: the sand core mould comprises a base; a pouring port and a forming groove are formed in the center of the base, the pouring port is communicated with the forming groove, and a cooling unit is arranged around the forming groove and penetrates through the base; the cooling unit comprises a liquid inlet and a liquid outlet, the diameter of the liquid inlet is larger than that of the liquid outlet, and the liquid inlet is communicated with the liquid outlet through a cooling pipeline; when the cooling device works, cooling water is injected into the cooling unit, the cooling water enters the cooling unit from a liquid inlet at a low position, the cooling water flows into a cooling channel arranged on the base, the forming groove can be cooled, and the cooling water is discharged from a liquid outlet; the diameter of the liquid inlet is larger than that of the liquid outlet, so that the liquid inlet can be wide and narrow, and the cooling efficiency of the forming groove is improved.
A casting mould for preparing a sand core mould is suitable for the sand core mould; the casting mould comprises a workbench, a movable mould and a fixed mould; the fixed die is fixedly connected to the upper surface of the workbench, the cutting surface of the fixed die is in a U shape, first grooves are symmetrically formed in the left end surface and the right end surface of the fixed die, a touch switch is arranged on one side of each first groove, each touch switch is electrically connected with a controller arranged on the lower surface of the workbench, and a movable die is arranged above the fixed die; the cutting surface of the movable mould is in a letter 'T' shape, a pouring pipeline is arranged at the central position of the lower surface of the movable mould, the pouring pipeline corresponds to a pouring port, positioning rods corresponding to a first groove are symmetrically arranged on two sides of the lower surface of the movable mould, the length of each positioning rod is the same as the depth of the first groove, the movable mould is connected above a workbench through four screw rods, each screw rod penetrates through a ball seat arranged in the movable mould and is connected with the movable mould, the upper end of each screw rod penetrates through a first plate on the workbench and is fixedly connected with a first gear respectively, each first gear is positioned on the upper surface of the first plate, each first gear is meshed with a second gear, the second gear and the first gear are positioned on the same horizontal plane, and the central position of the second gear is fixedly connected with an output shaft of a; the motor is fixedly connected to the workbench through a second plate above the first plate and is electrically connected with the controller; the fit between the movable die and the fixed die is realized through the cooperation of the controller, the touch switch, the motor, the first gear, the second gear and the screw rod, and the phenomenon that the movable die is separated from the fixed die is avoided; when the automatic screw-driving device works, firstly, the motor is controlled to rotate through the controller, then the motor drives the second gear to rotate, then the second gear drives the first gear to rotate, and meanwhile, the screw rod on the first gear also starts to rotate; the four screw rods drive the movable die to move downwards, on one hand, the plurality of screw rods can improve the stability between the movable die and the fixed die, high-temperature metal liquid is injected into a pouring pipeline, and when the movable die and the fixed die meet the high-temperature metal liquid, the movable die expands to slightly move, and the stability of the movable die can be enhanced through the plurality of screw rods; on the other hand, the moving stability of the movable die can be improved, and the plurality of screw rods move simultaneously, so that the movable die is prevented from being offset; when the movable mould gradually approaches to the fixed mould, the positioning rod gradually approaches and is slowly inserted into the first groove, and the movable mould is accurately positioned again through the positioning rod; when the movable die is completely attached to the fixed die, the movable die presses the touch switch on the fixed die, then the controller immediately stops the motor from rotating, the motor stops rotating, and the movable die does not move downwards any more, so that the movable die is stopped in time, and the movable die is prevented from destructively extruding the fixed die.
Preferably, each positioning rod is internally provided with a second groove, a first rod is symmetrically arranged in each second groove, the length of each first rod is smaller than the depth of each second groove, the middle position of each first rod is hinged to the side wall of each second groove, the upper end of each first rod is fixedly connected with a first ejector block, in an initial state, each first ejector block penetrates through a first through hole formed in the side wall of each second groove and stays on the outer wall of each positioning rod, the lower end of each first rod is fixedly connected with a second ejector block, each second ejector block is in a semi-elliptical shape, a second through hole is formed in the position, opposite to the side wall of each second groove, of each second ejector block, adjacent first rods are mutually connected through a first spring, and firmness between the movable mold and the fixed mold is further fastened through the matching among the first rods, the first ejector blocks, the second ejector blocks and the first springs; the during operation, when the movable mould moves down, locating lever on the movable mould is close to the notch in a groove gradually, final locating lever inserts an inslot, the lateral wall in a groove extrudees an kicking block simultaneously, then the kicking block is the inslot of indentation two times gradually, No. two kicking blocks extrude a pole simultaneously, a pole rotates around its pin joint, then No. two kicking blocks of a pole lower extreme are decided on the lateral wall in a groove, extrude a groove lateral wall through No. two kicking blocks, the fastness between reinforcing groove and the locating lever, the fastness between fixed mould and the movable mould has also further been strengthened simultaneously.
Preferably, the two sides of the bottom of the first groove are symmetrically provided with clamping grooves, after the positioning rod is completely inserted into the first groove, the second through hole on the positioning rod is opposite to the notch of the clamping groove, and the clamping groove is in a semi-elliptical shape; the firmness between the positioning rod and the first groove is further enhanced through the clamping groove; during operation, when No. two kicking blocks tops when the groove lateral wall is slided downwards, No. two kicking blocks are close to the joint groove gradually, and No. two final kicking blocks joint income joint inslot further strengthens the fastness between locating lever and the groove, when thinking the movable mould rebound, because the joint groove is semi-ellipse, No. two kicking blocks can break away from along the curved surface in joint groove, and simultaneously under the pulling force of a spring, No. two kicking blocks shrink back to No. two inslots.
Preferably, a first cavity is formed in the fixed die and is in a letter U shape, a push block is arranged in the first cavity and is in a letter U shape, two ends of the push block are inserted into the bottom of the first groove, the lower end face of the push block is connected to the bottom of the first cavity through a second spring, and a boss is arranged in the middle of the push block; in the initial state, the boss is 5MM higher than the inner surface of the fixed die; pushing the die in the fixed die out of the fixed die through the additional matching between the boss and the second spring; when the positioning device works, after the positioning rod extends into the first groove, the positioning rod presses the push block downwards, the push plate drives the boss to move downwards, so that the upper surface of the boss is flush with the inner surface of the fixed mold, molten metal liquid is injected into a cavity formed between the fixed mold and the movable mold at the moment, the movable mold is separated from the fixed mold after the molten metal liquid is molten, meanwhile, the positioning rod extends out of the first groove, the push block is not extruded by the positioning rod any more, then the push block pushes the push block and the boss upwards by the second spring under the elastic force of the second spring, and meanwhile, the boss pushes the sand core mold in the fixed mold out of the fixed mold; in will cast psammitolite mould release the fixed mould through ejector pad and boss, avoided getting the trouble of device with the psammitolite mould through pressing from both sides, also prevent to press from both sides the device and cause wearing and tearing and scratch to the psammitolite mould simultaneously.
Preferably, a first guide pipe is arranged at the center of the push block, the first guide pipe is communicated with the first groove, a first bag is arranged on the lower end face of the push plate, and anti-sticking silicone oil is filled in the first bag; through the matching between the first bag and the catheter, the anti-sticking silicone oil in the first bag is extruded into the first groove; when the sand core mould is in work, when the push block is pushed down to move, the push block extrudes the first bag, then the first bag is extruded and deformed, and anti-sticking silicon oil in the first bag flows into the upper surface of the boss from the first guide pipe, and an anti-sticking silicon oil film is formed between the sand core mould and the fixed mould at the moment, so that the adhesion of the cast sand core mould on the fixed mould is avoided, and meanwhile, the anti-sticking silicon oil also plays a certain cooling role, and the solidification forming of the sand core mould is accelerated.
Preferably, the upper surface of the boss is provided with a plurality of strip-shaped bulges which are 3MM higher than the upper surface of the boss, and the bulges surround the upper surface of the boss to form a closed multi-frame; the boss is further assisted by the protrusion, and anti-sticking silicone oil avoided by the boss is surrounded on the periphery of the first conduit; when the anti-sticking sand core mould works, the boss moves upwards, and meanwhile, the bulge also moves upwards along with the boss, so that on one hand, the boss can be used for assisting the cast sand core mould to be pushed out of the fixed mould, and on the other hand, the sealed frame formed by the surrounding of the bulge can prevent anti-sticking silicon oil from overflowing to the fixed mould; when the pushing block does not extrude the first capsule any more, the first capsule sucks the silicone oil on the surface of the boss back to the first capsule through the first guide pipe, so that repeated use of the anti-sticking silicone oil is realized, and the cost is saved.
The invention has the technical effects and advantages that:
1. according to the sand core mold and the casting mold for preparing the sand core mold, cooling water is injected into the cooling unit, the cooling water enters the cooling unit from the liquid inlet positioned at the low position, the cooling water flows into the cooling channel arranged on the base, a forming groove can be cooled, and the cooling water is discharged from the liquid outlet; the diameter of the liquid inlet is larger than that of the liquid outlet, so that the liquid inlet can be wide and narrow, and the cooling efficiency of the forming groove is improved.
2. According to the sand core mold and the casting mold for preparing the sand core mold, the moving stability of the movable mold can be improved through the plurality of screw rods, and the plurality of screw rods move simultaneously, so that the phenomenon that the movable mold is deviated is avoided; when the movable die is completely attached to the fixed die, the movable die presses the touch switch on the fixed die, then the controller immediately stops the motor from rotating, the motor stops rotating, and the movable die does not move downwards any more, so that the movable die is stopped in time, and the movable die is prevented from destructively extruding the fixed die.
3. According to the sand core mould and the casting mould for preparing the sand core mould, disclosed by the invention, the cast sand core mould is pushed out of the fixed mould through the push block and the boss, so that the trouble of clamping the sand core mould through the clamping device is avoided, and meanwhile, the abrasion and scratch of the sand core mould caused by the clamping device are also prevented; and a layer of anti-sticking silicone oil film is formed between the sand core mould and the fixed mould, so that the cast sand core mould is prevented from being adhered to the fixed mould, and meanwhile, the anti-sticking silicone oil also plays a certain cooling role, and the solidification forming of the sand core mould is accelerated.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a perspective view of the sand core mold of the present invention;
FIG. 2 is a perspective view of a casting mold for making a sand core mold in accordance with the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a view showing the fixed mold fitted to the movable mold;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is an enlarged view of a portion of FIG. 5 at D;
FIG. 8 is an enlarged view of a portion of FIG. 5 at E;
in the figure: the device comprises a base 1, a pouring gate 11, a molding groove 12, a cooling unit 2, a liquid inlet 21, a liquid outlet 22, a workbench 3, a controller 31, a first plate 32, a motor 33, a second gear 331, a second plate 34, a movable mold 4, a positioning rod 41, a screw rod 42, a first gear 421, a fixed mold 5, a first groove 51, a clamping groove 511, a touch switch 52, a second groove 6, a first rod 61, a first ejector block 611, a second ejector block 612, a first spring 613, a clamping groove 511, a first cavity 7, a push block 71, a second spring 72, a boss 711, a first guide pipe 712, a protrusion 713 and a first bag 73.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.
As shown in fig. 1 to 8, a sand core mold according to the present invention includes a base 1; a pouring port 11 and a molding groove 12 are formed in the center of the base 1, the pouring port 11 is communicated with the molding groove 12, and a cooling unit 2 is arranged around the molding groove 12 and penetrates through the base 1; the cooling unit 2 comprises a liquid inlet 21 and a liquid outlet 22, the diameter of the liquid inlet 21 is larger than that of the liquid outlet 22, and the liquid inlet 21 is communicated with the liquid outlet 22 through a cooling pipeline; when the cooling device works, cooling water is injected into the cooling unit 2, the cooling water enters the cooling unit 2 from the liquid inlet 21 at the low position, the cooling water flows into the cooling channel arranged on the base 1 and can cool the forming groove 12, and the cooling water is discharged from the liquid outlet 22152; the diameter of the liquid inlet 21 is larger than that of the liquid outlet 22, so that the liquid inlet can be wide and narrow, and the cooling efficiency of the forming groove 12 is improved.
A casting mould for preparing a sand core mould is suitable for the sand core mould; the casting mould comprises a workbench 3, a movable mould 4 and a fixed mould 5; the fixed die 5 is fixedly connected to the upper surface of the workbench 3, the fixed die 5 is in a U-shaped section, first slots 51 are symmetrically formed in the left end surface and the right end surface of the fixed die 5, a touch switch 52 is arranged on one side of each first slot 51, each touch switch 52 is electrically connected with the controller 31 arranged on the lower surface of the workbench 3, and the movable die 4 is arranged above the fixed die 5; the cutting surface of the movable mould 4 is in a letter 'T' shape, a pouring pipeline is arranged at the center of the lower surface of the movable mould 4 and corresponds to the pouring port 11, positioning rods 41 corresponding to a first groove 51 are symmetrically arranged at two sides of the lower surface of the movable mould 4, the length of each positioning rod 41 is the same as the depth of the first groove 51, the movable mould 4 is connected above the workbench 3 through four screw rods 42, each screw rod 42 penetrates through a ball seat arranged in the movable mould 4 and is connected with the movable mould 4, the upper end of each screw rod 42 penetrates through a first plate 32 on the workbench 3 and is fixedly connected with a first gear 421, each first gear 421 is positioned on the upper surface of the first plate 32, each first gear 421 is meshed with a second gear 331, the second gear 331 and the first gear 421 are positioned on the same horizontal plane, and the center of the second gear 331 is fixedly connected with an output shaft of the miscellaneous motor 33; the motor 33 is fixedly connected to the workbench 3 through a second plate 34 above the first plate 32, and the motor 33 is electrically connected with the controller 31; the controller 31, the touch switch 52, the motor 33, the first gear 421, the second gear 331 and the screw rod 42 are matched to realize the attachment between the movable die 4 and the fixed die 5 and avoid the phenomenon that the movable die 4 is separated from the fixed die 5; when the device works, firstly, the controller 31 controls the motor 33 to rotate, then the motor 33 drives the second gear 331 to rotate, then the second gear drives the first gear 421 to rotate, and meanwhile, the screw rod 42 on the first gear 421 also starts to rotate, and as the movable die 4 is connected with the screw rod 42 through the ball seat, after the screw rod 42 rotates, the ball seat on the movable die 4 drives the movable die 4 to move downwards and attach to the fixed die 5; the four screw rods 42 drive the movable die 4 to move downwards, on one hand, the plurality of screw rods 42 can improve the stability between the movable die 4 and the fixed die 5, high-temperature metal liquid is injected into a pouring pipeline, and when the movable die 4 and the fixed die 5 meet the high-temperature metal liquid, the expansion is generated, so that the movable die 4 slightly moves, and the stability of the movable die 4 can be enhanced through the plurality of screw rods 42; on the other hand, the moving stability of the movable die 4 can be improved, and the plurality of screw rods 42 move simultaneously, so that the phenomenon that the movable die 4 deviates is avoided; when the movable mold 4 gradually approaches the fixed mold 5, the positioning rod 41 gradually approaches and is slowly inserted into the first groove 51, and the movable mold 4 is accurately positioned again through the positioning rod 41; when the movable die 4 is completely attached to the fixed die 5, the movable die 4 presses the touch switch 52 on the fixed die 5, then the controller 31 immediately stops the motor 33 from rotating, the motor 33 stops rotating, and the movable die 4 does not move downwards any more, so that the movable die 4 is stopped in time, and the movable die 4 is prevented from destructively extruding the fixed die 5.
In one embodiment of the present invention, each of the positioning rods 41 is provided with a second groove 6, a first rod 61 is symmetrically arranged in the second groove 6, the length of the first rod 61 is smaller than the depth of the second groove 6, the middle position of the first rod 61 is hinged on the side wall of the second groove 6, the upper end of each first rod 61 is fixedly connected with a first top block 611, when in an initial state, the first top block 611 passes through a first through hole formed in the side wall of the second groove 6 and stays on the outer wall of the positioning rod 41, the lower end of each first rod 61 is fixedly connected with a second top block 612, the second top block 612 is in a half-3 elliptical shape, a second through hole is formed in the position, opposite to the side wall of the second groove 6, of the second top block 612, adjacent first rods 61 are connected with one another through first springs 613, and the firmness between the movable die 4 and the fixed die 5 is further fastened through the cooperation among the first rods 61, the first top block 611, the second top block 612 and the first springs 613; during operation, when movable mould 4 moves down, locating lever 41 on the movable mould 4 is close to the notch of a groove 51 gradually, final locating lever 41 inserts in a groove 51, the lateral wall extrusion kicking block 611 of a groove 51 simultaneously, then the kicking block is dwindled gradually in No. two grooves 6, No. two kicking blocks 612 extrusion pole 61 simultaneously, pole 61 rotates around its pin joint, No. two kicking blocks 612 of a pole 61 lower extreme are fixed on the lateral wall of a groove 51, extrude a groove 51 lateral wall through No. two kicking blocks 612, the fastness between a reinforcing groove 51 and locating lever 41, the fastness between fixed mould 5 and the movable mould 4 has also further been strengthened simultaneously.
As a specific embodiment of the present invention, the first groove 51 is symmetrically provided with the clamping grooves 511 at two sides of the bottom thereof, after the positioning rod 41 is completely inserted into the first groove 51, the second through hole of the positioning rod 41 is opposite to the notches of the clamping grooves 511, and the clamping grooves 511 are in a semi-elliptical shape; the firmness between the positioning rod 41 and the first groove 51 is further enhanced through the clamping groove 511; during operation, when No. two kicking blocks 612 are pushed against the side wall of the first groove 51 and slide downwards, No. two kicking blocks 612 are gradually close to the clamping groove 511, and finally No. two kicking blocks 612 are clamped into the clamping groove 511, so that firmness between the positioning rod 41 and the first groove 51 is further enhanced, when the movable die 4 is supposed to move upwards, because the clamping groove 511 is semi-elliptical, No. two kicking blocks 612 can be separated from the curved surface of the clamping groove 511, and simultaneously, under the pulling force of the first spring 613, No. two kicking blocks 612 retract into the second groove 6.
As a specific embodiment of the present invention, a first cavity 7 is formed in the fixed die 5, the first cavity 7 is in a shape of letter "U", a push block 71 is arranged in the first cavity 7, the push block 71 is in a shape of letter "U", two ends of the push block 71 are inserted into the bottom of the first groove 51, the lower end surface of the push block 71 is connected to the bottom of the first cavity 7 through a second spring 72, and a boss 711 is arranged in the middle of the push block 71; in the initial state, the boss 711 is higher than the bottom 5MM of the fixed mold 5; the die in the fixed die 5 is pushed out of the fixed die 5 by the additional matching between the boss 711 and the second spring 72; when the device works, after the positioning rod 41 extends into the first groove 51, the positioning rod 41 presses the pushing block 71 downwards, the pushing plate drives the boss 711 to move downwards, so that the upper surface of the boss 711 is flush with the inner surface of the fixed mold 5, molten metal is injected into a cavity formed between the fixed mold 5 and the movable mold 4 at the moment, after the molten metal is molten, the movable mold 4 is separated from the fixed mold 5, meanwhile, the positioning rod 41 extends out of the first groove 51, the pushing block 71 is not extruded by the positioning rod 41 any more, then the pushing block 71 pushes up the pushing block 71 and the boss 711 upwards by the second spring 72 under the elastic force of the second spring 72, and meanwhile, the boss 711 pushes out a sand core mold in the fixed mold 5 out of the fixed mold 5; the cast sand core mold is pushed out of the fixed mold 5 through the push block 71 and the boss 711, so that the trouble of clamping the sand core mold through the clamping device is avoided, and meanwhile, the abrasion and the scratch of the sand core mold caused by the clamping device are also prevented.
As a specific embodiment of the invention, a first conduit 712 is arranged at the central position of the push block 71, the first conduit 712 is communicated with the first groove 51, a first bag 73 is arranged on the lower end face of the push plate, and anti-sticking silicone oil is filled in the first bag 73; through the matching between the first pocket 73 and the catheter, the anti-sticking silicone oil in the first pocket 73 is extruded into the first groove 51; when the sand core mould is in work, when the push block 71 is pushed down to move, the push block 71 extrudes the first bag 73, then the first bag 73 is extruded and deformed and flows anti-sticking silicon oil in the first bag into the upper surface of the boss 711 from the first guide pipe 712, and at the moment, a layer of anti-sticking silicon oil film is formed between the sand core mould and the fixed mould 5, so that the cast sand core mould is prevented from being adhered to the fixed mould 5, and meanwhile, the anti-sticking silicon oil also plays a certain role in cooling, and the solidification forming of the sand core mould is accelerated.
As a specific embodiment of the present invention, the upper surface of the boss 711 is provided with a plurality of strip-shaped protrusions 713, the protrusions 713 are 3MM higher than the upper surface of the boss 711, and the protrusions 713 surround the upper surface of the boss 711 to form a closed multi-frame; the boss 711 is further assisted by the protrusion 713, and anti-adhesion silicone oil avoided by the boss 711 is enclosed around the first conduit 712; during operation, the boss 711 moves upwards, meanwhile, the protrusion 713 also moves upwards along with the boss 711, on one hand, the arrangement of the protrusion 713 can assist the boss 711 to push the cast sand core mold out of the fixed mold 5, and on the other hand, the closed frame surrounded by the protrusion 713 can prevent the anti-sticking silicon oil from overflowing to the fixed mold 5; when the pushing block 71 does not extrude the first pocket 73 any more, the first pocket 73 sucks the silicone oil on the surface of the boss 711 back to the first pocket 73 through the first guide pipe 712 again, so that the silicone oil is prevented from being used for multiple times, and the cost is saved.
When the cooling device works, cooling water is injected into the cooling unit 2, the cooling water enters the cooling unit 2 from the liquid inlet 21 at the low position, the cooling water flows into the cooling channel arranged on the base 1 and can cool the forming groove 12, and the cooling water is discharged from the liquid outlet 22152; the diameter of the liquid inlet 21 is larger than that of the liquid outlet 22, so that wide inlet and narrow outlet can be realized, and the cooling efficiency of the forming groove 12 is improved; firstly, the controller 31 controls the motor 33 to rotate, then the motor 33 drives the second gear 331 to rotate, then the second gear drives the first gear 421 to rotate, and simultaneously the screw rod 42 on the first gear 421 also starts to rotate, and as the movable die 4 and the screw rod 42 are connected through the ball seat, after the screw rod 42 rotates, the ball seat on the movable die 4 drives the movable die 4 to move downwards and be attached to the fixed die 5; the four screw rods 42 drive the movable die 4 to move downwards, on one hand, the plurality of screw rods 42 can improve the stability between the movable die 4 and the fixed die 5, high-temperature metal liquid is injected into a pouring pipeline, and when the movable die 4 and the fixed die 5 meet the high-temperature metal liquid, the expansion is generated, so that the movable die 4 slightly moves, and the stability of the movable die 4 can be enhanced through the plurality of screw rods 42; on the other hand, the moving stability of the movable die 4 can be improved, and the plurality of screw rods 42 move simultaneously, so that the phenomenon that the movable die 4 deviates is avoided; when the movable mold 4 gradually approaches the fixed mold 5, the positioning rod 41 gradually approaches and is slowly inserted into the first groove 51, and the movable mold 4 is accurately positioned again through the positioning rod 41; when the movable die 4 is completely attached to the fixed die 5, the movable die 4 presses the touch switch 52 on the fixed die 5 downwards, then the controller 31 immediately stops the motor 33 from rotating, the motor 33 stops rotating, and the movable die 4 does not move downwards any more, so that the movable die 4 is stopped in time, and the movable die 4 is prevented from destructively extruding the fixed die 5; when the movable die 4 moves downwards, the positioning rod 41 on the movable die 4 is gradually close to the notch of the first groove 51, finally the positioning rod 41 is inserted into the first groove 51, meanwhile, the side wall of the first groove 51 extrudes the first ejector block 611, then the ejector block gradually retracts into the second groove 6, meanwhile, the second ejector block 612 extrudes the first rod 61, the first rod 61 rotates around the hinged point of the first rod, then the second ejector block 612 at the lower end of the first rod 61 is fixed on the side wall of the first groove 51, the side wall of the first groove 51 is extruded through the second ejector block 612, the firmness between the first groove 51 and the positioning rod 41 is enhanced, and meanwhile, the firmness between the fixed die 5 and the movable die 4 is further enhanced; when the second ejector block 612 abuts against the side wall of the first groove 51 and slides downwards, the second ejector block 612 gradually approaches the clamping groove 511, and finally the second ejector block 612 is clamped into the clamping groove 511, so that the firmness between the positioning rod 41 and the first groove 51 is further enhanced, when the movable die 4 is supposed to move upwards, the second ejector block 612 can be separated out along the curved surface of the clamping groove 511 because the clamping groove 511 is semi-elliptical, and meanwhile, the second ejector block 612 retracts into the second groove 6 under the pulling force of the first spring 613; after the positioning rod 41 is inserted into the first groove 51, the positioning rod 41 presses the pushing block 71 downwards, the pushing plate drives the boss 711 to move downwards, so that the upper surface of the boss 711 is flush with the inner surface of the fixed mold 5, molten metal is injected into a cavity formed between the fixed mold 5 and the movable mold 4 at the moment, after the molten metal is molten, the movable mold 4 is separated from the fixed mold 5, meanwhile, the positioning rod 41 extends out of the first groove 51, the pushing block 71 is not extruded by the positioning rod 41 any more, then the pushing block 71 pushes up the pushing block 71 and the boss 711 upwards by the second spring 72 under the elastic force of the second spring 72, and meanwhile, the boss 711 pushes out a sand core mold in the fixed mold 5 out of the fixed mold 5; the cast sand core mould is pushed out of the fixed mould 5 through the push block 71 and the boss 711, so that the trouble of clamping the sand core mould through the clamping device is avoided, and the abrasion and the scratch of the sand core mould caused by the clamping device are also prevented; when the push block 71 is pressed downwards to move, the push block 71 extrudes the first bag 73, then the first bag 73 is extruded and deformed, and anti-sticking silicone oil in the first bag flows into the upper surface of the boss 711 from the first guide pipe 712, and a layer of anti-sticking silicone oil film is formed between the sand core mold and the fixed mold 5, so that the cast sand core mold is prevented from being adhered to the fixed mold 5, and meanwhile, the anti-sticking silicone oil also plays a certain role in cooling, and the solidification molding of the sand core mold is accelerated; the boss 711 moves upwards, and meanwhile, the protrusion 713 also moves upwards along with the boss 711, so that the protrusion 713 is arranged to assist the boss 711 to push the cast sand core mold out of the fixed mold 5 on one hand, and on the other hand, the closed frame surrounded by the protrusion 713 can prevent the anti-sticking silicon oil from overflowing to the fixed mold 5; when the pushing block 71 does not extrude the first pocket 73 any more, the first pocket 73 sucks the silicone oil on the surface of the boss 711 back to the first pocket 73 through the first guide pipe 712 again, so that the silicone oil is prevented from being used for multiple times, and the cost is saved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A sand core mould is characterized in that: comprises a base (1); a pouring port (11) and a forming groove (12) are formed in the center of the base (1), the pouring port (11) is communicated with the forming groove (12), and a cooling unit (2) is arranged around the forming groove (12) and penetrates through the base (1); the cooling unit (2) comprises a liquid inlet (21) and a liquid outlet (22), the diameter of the liquid inlet (21) is larger than that of the liquid outlet (22), and the liquid inlet (21) is communicated with the liquid outlet (22) through a cooling pipeline.
2. A casting mould for preparing a sand core mould is characterized in that: the casting mold for the sand core mold of claim 1; the casting mould comprises a workbench (3), a movable mould (4) and a fixed mould (5); the fixed die (5) is fixedly connected to the upper surface of the workbench (3), the fixed die (5) is in a U-shaped section, first slots (51) are symmetrically formed in the left end face and the right end face of the fixed die (5), a touch switch (52) is arranged on one side of each first slot (51), each touch switch (52) is electrically connected with a controller (31) arranged on the lower surface of the workbench (3), and a movable die (4) is arranged above the fixed die (5); the cutting surface of the movable mould (4) is in a T shape, the center of the lower surface of the movable mould (4) is provided with a pouring pipeline corresponding to the pouring port (11), two sides of the lower surface of the movable mould (4) are symmetrically provided with positioning rods (41) corresponding to the first groove (51), the length of each positioning rod (41) is the same as the depth of the first groove (51), the movable mould (4) is connected above the workbench (3) through four screw rods (42), each screw rod (42) penetrates through a ball seat arranged in the movable mould (4) to be connected with the movable mould (4), the upper end of each screw rod (42) penetrates through a first plate (32) on the workbench (3) and is fixedly connected with a first gear (421) respectively, each first gear (421) is positioned on the upper surface of the first plate (32), each first gear (421) is meshed with a second gear (331), and the second gear (331) and the first gear (421) are positioned on the same horizontal plane, the center of the second gear (331) is fixedly connected to the output shaft of the motor (33); the motor (33) is fixedly connected to the workbench (3) through a second plate (34) above the first plate (32), and the motor (33) is electrically connected with the controller (31); the controller (31), the touch switch (52), the motor (33), the first gear (421), the second gear (331) and the screw rod (42) are matched to realize the attachment between the movable die (4) and the fixed die (5) and avoid the phenomenon that the movable die (4) is separated from the fixed die (5).
3. The casting mold for making a sand core mold as recited in claim 2, wherein: no. two grooves (6) are formed in each positioning rod (41), a first rod (61) is symmetrically arranged in each groove (6), the length of the first rod (61) is smaller than the depth of each groove (6), the middle position of the first rod (61) is hinged to the side wall of each groove (6), the upper end of each first rod (61) is fixedly connected with a first ejector block (611), in the initial state, the first ejector block (611) penetrates through a first through hole formed in the side wall of each groove (6) and stays on the outer wall of each positioning rod (41), the lower end of each first rod (61) is fixedly connected with a second ejector block (612), each second ejector block (612) is in a half-3 elliptical shape, a second through hole is formed in the position, corresponding to the side wall of each second ejector block (612) and the side wall of each groove (6), and adjacent first rods (61) are mutually connected through a first spring (613), the first rods (61), the first ejector blocks (611), The matching between the second top block (612) and the first spring (613) further fastens the firmness between the movable die (4) and the fixed die (5).
4. The casting mold for making a sand core mold as recited in claim 2, wherein: clamping grooves (511) are symmetrically formed in two sides of the bottom of the first groove (51), after the positioning rod (41) is completely inserted into the first groove (51), a second through hole in the positioning rod (41) is opposite to the notch of the clamping groove (511), and the clamping groove (511) is in a semi-elliptical shape; the firmness between the positioning rod (41) and the first groove (51) is further enhanced through the clamping groove (511).
5. The casting mold for making a sand core mold as recited in claim 3, wherein: a first cavity (7) is formed in the fixed die (5), the first cavity (7) is in a letter U shape, a push block (71) is arranged in the first cavity (7), the push block (71) is in a letter U shape, two ends of the push block (71) are inserted into the bottom of the first groove (51), the lower end face of the push block (71) is connected to the bottom of the first cavity (7) through a second spring (72), and a boss (711) is arranged in the middle of the push block (71); in the initial state, the boss (711) is higher than the inner surface 5MM of the fixed die (5); the die in the fixed die (5) is pushed out of the fixed die (5) by the cooperation between the boss (711) and the second spring (72).
6. The casting mold for making a sand core mold as recited in claim 5, wherein: a first guide pipe (712) is arranged at the center of the push block (71), the first guide pipe (712) is communicated with the first groove (51) and a first bag (73) is arranged on the lower end face of the push plate, and anti-sticking silicone oil is filled in the first bag (73); through the cooperation between the first pocket (73) and the catheter, the anti-sticking silicone oil in the first pocket (73) is extruded into the first groove (51).
7. The casting mold for making a sand core mold as recited in claim 5, wherein: the upper surface of the boss (711) is provided with a plurality of strip-shaped bulges (713), the bulges (713) are higher than the upper surface of the boss (711) by 3MM, and the bulges (713) surround the upper surface of the boss (711) to form a closed multi-frame; the boss (711) is further assisted by the protrusion (713) while enclosing the silicone oil that the boss (711) avoids around the first conduit (712).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911190112.7A CN110802200A (en) | 2019-11-28 | 2019-11-28 | Sand core mould and casting mould for preparing sand core mould |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911190112.7A CN110802200A (en) | 2019-11-28 | 2019-11-28 | Sand core mould and casting mould for preparing sand core mould |
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| CN110802200A true CN110802200A (en) | 2020-02-18 |
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| CN201911190112.7A Pending CN110802200A (en) | 2019-11-28 | 2019-11-28 | Sand core mould and casting mould for preparing sand core mould |
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