CN115533039B - Casting die and processing technology for automobile turbocharger shell - Google Patents
Casting die and processing technology for automobile turbocharger shell Download PDFInfo
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- CN115533039B CN115533039B CN202211221159.7A CN202211221159A CN115533039B CN 115533039 B CN115533039 B CN 115533039B CN 202211221159 A CN202211221159 A CN 202211221159A CN 115533039 B CN115533039 B CN 115533039B
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- 238000005266 casting Methods 0.000 title claims abstract description 118
- 238000012545 processing Methods 0.000 title claims abstract description 10
- 238000005516 engineering process Methods 0.000 title claims abstract description 8
- 239000012768 molten material Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000012466 permeate Substances 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 22
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 13
- 238000001816 cooling Methods 0.000 description 12
- 230000006378 damage Effects 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 208000002697 Tooth Abrasion Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/04—Handling or stripping castings or ingots
- B22D29/06—Strippers actuated by fluid pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the field of turbocharger processing, in particular to an automobile turbocharger shell casting mold and a processing technology, wherein the automobile turbocharger shell casting mold comprises a mold assembly, and the mold assembly comprises an upper mold, a lower mold and a mold core; the two sides of the die cavity of the upper die and the lower die are respectively provided with a concave part, a vibrating motor is fixedly connected in the concave part, the periphery of the concave part is provided with a circulation groove, the circulation groove is communicated with an external water supply pipe, and the water supply pipe is communicated with an external water supply pump; the high-frequency vibration of the die assembly enables the molten material to fully flow and permeate into each gap in the die cavity and the die core, so that the number of pits on the surface of a casting is reduced, and the quality of the casting is improved; in the anticlockwise rotation process of the lower die, the vibrating motor can be started to drive the casting to vibrate, so that the outer surface of the casting is separated from the die cavity, and the casting is helped to be separated from the die cavity.
Description
Technical Field
The invention relates to the field of turbocharger processing, in particular to a casting die and a processing technology for an automobile turbocharger shell.
Background
The turbocharger mainly comprises a turbine and a volute, the volute is complex in shape, materials are required to have good castability, meanwhile, the turbocharger is required to have good high-temperature performance, the working temperature of the automobile engine turbocharger is up to 800-900 ℃, and the working temperature of the engine turbocharger of a special vehicle is up to 900-950 ℃.
With the improvement of the performance requirements of the engine, the working temperature of the turbocharger is further improved, the casting quality is also considered, and the surface and the inside of the casting are ensured to have no residual gaps.
The volute has a complex shape, the thickness of each part on the volute is different, the thickness of some parts is thinner, when a casting is performed, a molten material is injected into a die cavity, in the solidification process of the molten material, bubbles remain in the molten material, particularly the die cavity, the surface of a model and the positions of corners, more bubbles are left, but the bubbles cannot be removed, when the casting is stripped, obvious pits can be seen by naked eyes on the surface of the casting and the positions of the corners, particularly the parts with thinner parts on the casting are easy to break or deform due to the pits, and the expected set high-pressure high-temperature operation environment cannot be accommodated.
Therefore, a casting mold and a processing technology for the shell of the automobile turbocharger are provided for solving the problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a casting die and a processing technology for an automobile turbocharger shell.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a casting mould for an automobile turbocharger shell, which comprises a mould assembly, wherein the mould assembly comprises an upper mould, a lower mould and a mould core; the two sides of the die cavity of the upper die and the lower die are respectively provided with a concave part, a vibrating motor is fixedly connected in the concave part, the periphery of the concave part is provided with a circulation groove, the circulation groove is communicated with an external water supply pipe, and the water supply pipe is communicated with an external water supply pump; according to the scheme provided by the embodiment of the invention, when the scheme is executed, after the upper die is attached to the lower die, the vibration motor is started, the vibration motor drives the die assembly to vibrate, then molten material is injected into a die cavity of the die assembly from a pouring hole on the upper die, and in the process that the molten material flows into the die cavity, the die assembly vibrates at high frequency, so that the molten material can fully flow and permeate into each gap in the die cavity and the die core, the number of pits on the surface of a casting is reduced, and the quality of the casting is improved; because the temperature of the molten material is higher, the temperature can be transmitted to the vibrating motor in the concave part through the die assembly, and the vibrating motor can be damaged due to the fact that the vibrating motor is in a high-temperature environment, and therefore a cooling circulation groove is arranged on the die assembly and is mainly used for cooling the running environment of the vibrating motor, a casting is cooled, and a cooling system of the die can be used for cooling the casting; external water pump pours cooling liquid into the circulation groove through the delivery pipe, then continuously cools down concave part internal environment, guarantees vibrating motor's operating stability.
Preferably, one side of the die assembly is provided with a demoulding mechanism; the demoulding mechanism comprises a fixed block, a toothed ring and a gear; the fixed blocks are symmetrically and fixedly connected to two ends of the lower die, two fixed blocks are fixedly connected with a toothed ring respectively, the outer ring of each toothed ring is meshed with a gear, the two gears are fixedly connected through a connecting shaft, and the middle position of the connecting shaft is connected with the output end of the gearbox; arc brackets are arranged on the top surfaces of the inner rings of the two toothed rings, and the inner rings of the brackets are connected with the inner rings of the toothed rings in a sliding manner; the existing casting mould of the shell of the automobile turbocharger moves horizontally left and right, when demoulding, a casting is clamped on the mould, and the casting is required to be scratched out by a tool before a worker goes up, firstly, the high-temperature environment can cause injury to the on-site worker, secondly, the working is troublesome, and when the used blanking tool is mistakenly touched on the mould, the mould cavity is damaged, and the quality of the casting is affected; for this purpose, the mould assembly is arranged in a mode of opening and closing up and down; when the demoulding mechanism is executed, the gear rotates to drive the toothed ring to rotate, the toothed ring rotates anticlockwise to drive the lower die to separate from the upper die and rotate, and the toothed ring and the lower die rotate anticlockwise by 180 degrees, so that a die cavity of the lower die is in a downward state, and then a casting is separated from the die cavity of the lower die due to self gravity, thereby realizing automatic stripping of the casting, avoiding the high-temperature danger of stripping when a person goes up, and avoiding the use of a stripping tool to collide and damage the die; in the anticlockwise rotation process of the lower die, the vibrating motor can be started to drive the casting to vibrate, so that the outer surface of the casting is separated from the die cavity, and the casting is helped to be separated from the die cavity.
Preferably, the upper end surface of the upper die is fixedly connected with a supporting frame, and the upper end of the supporting frame is fixedly connected with the output end of a hydraulic cylinder; before vibrating the lower die anticlockwise, driving the hydraulic cylinder to drive the upper die to move upwards, wherein the moving distance is one third to one half of the height of the casting, and then driving the toothed ring to rotate anticlockwise, so that when the lower die drives the casting to rotate, the corner position of the casting cannot scratch the inner surface of the die cavity of the upper die due to the rotating radius, the die cavity is protected, and meanwhile, the surface of the casting is protected; in the process that the upper die moves upwards through the hydraulic cylinder, the vibrating motor in the upper die can be driven, so that the casting can be completely separated from the die cavity of the upper die, and the casting is placed in the die cavity of the lower die.
Preferably, guide wheels are symmetrically arranged on two sides of each bracket, the middle of each guide wheel is concavely arranged, the inner ring of the toothed ring is slidably connected to the concave position of each guide wheel, a connecting rod is fixedly connected between the two opposite guide wheels, and a fixing plate is fixedly connected to the middle position of each connecting rod; when the die assembly is matched, the upper die and the lower die are required to be stably and accurately attached, gaps between the upper die and the lower die are reduced, and castings with fewer burrs at corners can be cast, so that on the basis that the toothed ring and the lower die are supported by the bracket, the toothed ring and the lower die are further stabilized by arranging guide wheels; the ring gear erects on the leading wheel that the symmetry set up, and the leading wheel both can be with the ring gear pop-up stable, also can retrain the both sides swing of ring gear simultaneously, guarantees the stability of ring gear rotation in-process, also further improves the lower mould simultaneously and rotates stability for the lower mould can be stable attached extrusion on last mould.
Preferably, a semicircular groove is formed in the end face of each tooth ring; a sliding rod penetrates through the end face of each guide wheel in a sliding manner, one end of the sliding rod is connected to the end face of the guide wheel through a tension spring, and the other end of the sliding rod is hemispherical and is embedded into the semicircular groove; the bracket and the guide wheel are in fixed states, one end of the sliding rod on the end face of the guide wheel is sequentially embedded into the semicircular groove, the sliding rod is intermittently embedded into the semicircular groove and is separated from the semicircular groove, the sliding rod vibrates, the vibration is transmitted to the toothed ring through the guide wheel, the toothed ring transmits the vibration to the lower die, the vibration separation of castings in the lower die is facilitated, and meanwhile the vibration motor is assisted to vibrate the lower die.
Preferably, one side of the supporting frame is symmetrically and fixedly connected with locking plates, the lower end of each locking plate is provided with a plurality of clamping teeth, and the clamping teeth are matched with teeth of the toothed ring; after the lower die rotates to the upper die attaching position, the upper die moves towards the lower die through the hydraulic cylinder, the upper die and the lower die are attached together, meanwhile, the support frame on the upper die drives the locking plate to approach towards the tooth ring direction, and the teeth on the locking plate are embedded into the teeth on the tooth ring, so that the rotation of the tooth ring is further stabilized, the position of the lower die is fixed, and the attaching compactness between the lower die and the upper die is improved.
Preferably, the middle end face of the toothed ring is provided with an arc-shaped through hole, and the included angle r of the end part of the through hole is more than one hundred eighty degrees and less than two hundred seventy degrees; the inside of the bracket is provided with a plurality of rod bodies, the end parts of the rod bodies penetrate through the through holes and are fixedly connected to the outer end surfaces of the bracket, and the outer rings of the rod bodies are tightly matched with the inner side walls of the through holes; when the toothed ring rotates, the inner side wall of the through hole moves along the surface of the outer ring of the rod body, the rod body and the bracket lift the toothed ring upwards, so that the toothed ring can be stably meshed with the gear, the position of the toothed ring is further limited by the cooperation of the rod body and the through hole, the toothed ring cannot move up and down, stable meshing between the toothed ring and the gear is ensured, the gear is prevented from being jacked on the toothed ring, extrusion force is excessively large, tooth abrasion is serious, or meshing gaps between the toothed ring and the gear are excessively large, and meshing between the toothed ring and the gear is not stable enough.
Preferably, a pull rod penetrates through the upper half part of the fixed plate, two ends of the pull rod are fixedly connected with the fixed rod, and the end part of the fixed rod is fixedly connected on the outer end surface of the bracket; the pull rod is matched with the fixing rod, so that the bracket is fixed on the fixing plate, the bracket is further fixed, and meanwhile, the stability of the toothed ring in a rotating state or a static state is improved.
The automobile turbocharger shell casting processing technology uses any one of the automobile turbocharger shell casting molds to produce the automobile turbocharger shell, and comprises the following steps:
s1: the die is manufactured, an upper die and a lower die are polished through machining, then the last repair is performed manually, then a die core is manufactured according to the shape of the casting, and the die core is also required to be repaired, so that corner burrs and pits are repaired, and the repair work of complex corners in the casting in the later stage is reduced;
s2: the method comprises the steps of (1) casting molten materials, horizontally fixing an upper die through a hydraulic cylinder, supporting a lower die through a demoulding mechanism, placing a die core in a die cavity of the lower die, attaching the lower die to the upper die through a demoulding mechanism, casting the molten materials, and starting a vibrating motor to vibrate the molten materials in the die cavity so that the molten materials can permeate into each gap in the die cavity;
s3: and demolding and blanking, wherein the upper die is pulled up by the hydraulic cylinder, and then the lower die is driven to rotate by the demolding mechanism, so that a die cavity of the lower die faces downwards, the casting and the die core fall off the die assembly, and then the die cavity is subjected to impact cleaning by using the high-pressure air nozzle.
Preferably, the temperature of the cooling liquid medium injected into the water supply pipe is 5-10 ℃ when the mold assemblies are attached to each other and the mold assemblies are separated from each other, and the temperature of the cooling liquid medium injected into the water supply pipe is 0-2 ℃ when the molten material is poured.
The invention has the advantages that:
1. according to the invention, the vibration motor and the die assembly are matched, so that the function of fully penetrating each gap of the die cavity by the vibration of the molten material is realized, and the high-frequency vibration of the die assembly enables the molten material to fully flow and penetrate into each gap in the die cavity and the die core in the process of flowing the molten material into the die cavity, so that the number of pits on the surface of a casting is reduced, and the quality of the casting is improved;
2. according to the invention, through the design of the demoulding mechanism, the function of casting stripping is realized, the ring and the lower die are rotated anticlockwise for 180 degrees, so that the die cavity of the lower die is in a downward state, and then the casting is separated from the die cavity of the lower die due to self gravity, thereby realizing automatic stripping of the casting, avoiding the high-temperature danger of personnel before feeding operation stripping, and avoiding the use of a stripping tool to collide and damage the die.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a lower die in a first embodiment;
FIG. 2 is a perspective view showing the combination of the die set price and the demolding mechanism in the first embodiment;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a front view showing the cooperation of the die set price and the demolding mechanism in the first embodiment;
FIG. 5 is a perspective view of a demolding mechanism in the first embodiment;
FIG. 6 is a perspective view of a bracket according to the first embodiment;
FIG. 7 is a perspective view showing the cooperation between the fixing rod and the fixing plate in the second embodiment;
fig. 8 is a flow chart of a casting process of an automobile turbocharger housing according to the first embodiment.
In the figure: the upper die 1, the lower die 2, the concave part 3, the vibrating motor 4, the water supply pipe, the fixed block 6, the toothed ring 7, the gear 8, the bracket 9, the supporting frame 10, the guide wheel 11, the fixed plate 12, the semicircular groove 13, the slide bar 14, the locking plate 15, the latch 16, the through hole 17, the rod body 18, the fixed rod 19 and the pull rod 20.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1 and 2, a casting mold for a turbocharger housing of an automobile includes a mold assembly including an upper mold 1, a lower mold 2, and a mold core; the two sides of the die cavity of the upper die 1 and the lower die 2 are respectively provided with a concave part 3, a vibrating motor 4 is fixedly connected in the concave part 3, the periphery of the concave part 3 is provided with a circulation groove, the circulation groove is communicated with an external water supply pipe 5, and the water supply pipe 5 is communicated with an external water supply pump; according to the scheme provided by the embodiment of the invention, when the scheme is executed, after the upper die 1 is attached to the lower die 2, the vibration motor 4 is started, the vibration motor 4 drives the die assembly to vibrate, then molten material is injected into a die cavity of the die assembly from a pouring hole on the upper die 1, and in the process of flowing into the die cavity, the molten material is vibrated at high frequency of the die assembly, so that the molten material can fully flow and permeate into each gap in the die cavity and the die core, the number of pits on the surface of a casting is reduced, and the quality of the casting is improved; because the temperature of the molten material is higher, the temperature can be transmitted to the vibrating motor 4 in the concave part 3 through the die assembly, and the vibrating motor 4 can be damaged due to the high-temperature environment, so that a cooling circulation groove is arranged on the die assembly and is mainly used for cooling the running environment of the vibrating motor 4, a casting is cooled, and a cooling system of the die can be used for cooling the casting; the external water pump injects cooling liquid into the circulation groove through the water supply pipe 5, and then continuously cools down the internal environment of the concave part 3, so that the running stability of the vibrating motor 4 is ensured.
Referring to fig. 2, 4, 5 and 6, one side of the mold assembly is provided with a demolding mechanism; the demoulding mechanism comprises a fixed block 6, a toothed ring 7 and a gear 8; the fixed blocks 6 are symmetrically and fixedly connected to two ends of the lower die 2, two fixed blocks 6 are fixedly connected with a toothed ring 7 respectively, the outer ring of each toothed ring 7 is meshed with a gear 8, the two gears 8 are fixedly connected through a connecting shaft, and the middle position of the connecting shaft is connected with the output end of the gearbox; the top surfaces of the inner rings of the two toothed rings 7 are provided with arc brackets 9, and the inner rings of the brackets 9 are connected with the inner rings of the toothed rings 7 in a sliding manner; the existing casting mould of the shell of the automobile turbocharger moves horizontally left and right, when demoulding, a casting is clamped on the mould, and the casting is required to be scratched out by a tool before a worker goes up, firstly, the high-temperature environment can cause injury to the on-site worker, secondly, the working is troublesome, and when the used blanking tool is mistakenly touched on the mould, the mould cavity is damaged, and the quality of the casting is affected; for this purpose, the mould assembly is arranged in a mode of opening and closing up and down; when the demoulding mechanism is executed, the gear 8 rotates to drive the toothed ring 7 to rotate, the toothed ring 7 rotates anticlockwise to drive the lower die 2 to separate from the upper die 1 and rotate, and the toothed ring 7 and the lower die 2 rotate anticlockwise by 180 degrees, so that the die cavity of the lower die 2 is in a downward state, and then a casting is separated from the die cavity of the lower die 2 due to self gravity, thereby realizing automatic stripping of the casting, avoiding the high-temperature danger of stripping when people go up and operate the stripping, and avoiding the use of a stripping tool to collide and damage the die; in the anticlockwise rotation process of the lower die 2, the vibrating motor 4 can be started, and the vibrating motor 4 drives the casting to vibrate, so that the outer surface of the casting is separated from the die cavity, and the casting is helped to be separated from the die cavity.
Referring to fig. 2, the upper end surface of the upper die 1 is fixedly connected with a support frame 10, and the upper end of the support frame 10 is fixedly connected with the output end of a hydraulic cylinder; before the lower die 2 is vibrated anticlockwise, the hydraulic cylinder is driven to drive the upper die 1 to move upwards, the moving distance is one third to one half of the height of the casting, then the toothed ring 7 is driven to rotate anticlockwise, and at the moment, when the lower die 2 drives the casting to rotate, the corner position of the casting cannot scratch the inner surface of the die cavity of the upper die 1 due to the rotating radius, so that the die cavity is protected, and meanwhile, the surface of the casting is protected; in the process of moving up the upper die 1 through the hydraulic cylinder, the vibrating motor 4 in the upper die 1 can be driven, so that the casting can be completely separated from the die cavity of the upper die 1, and the casting is placed in the die cavity of the lower die 2.
Referring to fig. 2, 4, 5 and 6, guide wheels 11 are symmetrically arranged on two sides of each bracket 9, the middle of each guide wheel 11 is concavely arranged, the inner ring of the toothed ring 7 is slidably connected at the concave position of each guide wheel 11, a connecting rod is fixedly connected between the two opposite guide wheels 11, and a fixing plate 12 is fixedly connected at the middle position of the connecting rod; when the die assembly is matched, stable and accurate lamination of the upper die 1 and the lower die 2 is required to be ensured, gaps between the upper die 1 and the lower die 2 are reduced, and castings with fewer corner burrs at the casting positions can be cast, so that on the basis that the bracket 9 supports the toothed ring 7 and the lower die 2, the toothed ring 7 and the lower die 2 are further stabilized by arranging the guide wheels 11; the ring gear 7 erects on the leading wheel 11 that the symmetry set up, and the leading wheel 11 both can be with ring gear 7 pop-up stability, also can retrain the both sides swing of ring gear 7 simultaneously, guarantees ring gear 7 rotation in-process stability, also further improves lower mould 2 rotation stability simultaneously for lower mould 2 can stabilize attached extrusion on last mould 1.
Referring to fig. 2 and 3, a semicircular groove 13 is formed on the end surface of each tooth ring 7; a sliding rod 14 is penetrated through the end surface of each guide wheel 11 in a sliding way, one end of the sliding rod 14 is connected to the end surface of the guide wheel 11 through a tension spring, and the other end of the sliding rod 14 is hemispherical and is embedded into the semicircular groove 13; the bracket 9 and the guide wheel 11 are in a fixed state, one end of a slide bar 14 on the end face of the guide wheel 11 is sequentially embedded into the semicircular groove 13, the slide bar 14 is intermittently embedded into the semicircular groove 13 and is separated from the semicircular groove 13, the slide bar 14 generates vibration, the vibration is transmitted to the toothed ring 7 through the guide wheel 11, the toothed ring 7 transmits the vibration to the lower die 2, the vibration separation of castings in the lower die 2 is facilitated, and the vibration motor 4 is assisted to vibrate the lower die 2.
Referring to fig. 3, a locking plate 15 is symmetrically and fixedly connected to one side of the supporting frame 10, a plurality of latches 16 are provided at the lower end of each locking plate 15, and the latches 16 are matched with teeth of the toothed ring 7; after the lower die 2 rotates to the attaching position of the upper die 1, the upper die 1 moves towards the lower die 2 through a hydraulic cylinder, the upper die 1 and the lower die 2 are attached together, meanwhile, the support frame 10 on the upper die 1 drives the locking plate 15 to approach towards the tooth ring 7, the clamping teeth 16 on the locking plate 15 are embedded into teeth on the tooth ring 7, the rotation of the tooth ring 7 is further stabilized, the position of the lower die 2 is fixed, and the attaching compactness between the lower die 2 and the upper die 1 is improved.
Referring to fig. 4, the middle end surface of the toothed ring 7 is provided with an arc-shaped through hole 17, and the included angle r of the end part of the through hole 17 is larger than one hundred eighty degrees and smaller than two hundred seventy degrees; the inside of the bracket 9 is provided with a plurality of rod bodies 18, the end parts of the rod bodies 18 penetrate through the through holes 17 and are fixedly connected to the outer end surfaces of the bracket 9, and the outer rings of the rod bodies 18 are tightly matched with the inner side walls of the through holes 17; when the toothed ring 7 rotates, the inner side wall of the through hole 17 moves along the surface of the outer ring of the rod body 18, the rod body 18 and the bracket 9 lift the toothed ring 7 upwards, so that the toothed ring 7 can be stably meshed with the gear 8, the position of the toothed ring 7 is further limited by the cooperation of the rod body 18 and the through hole 17, the toothed ring 7 cannot move up and down, the stable meshing between the toothed ring 7 and the gear 8 is ensured, the toothed ring 7 is prevented from propping against the gear 8, the extrusion force is excessive, the tooth abrasion is serious, or the meshing gap between the toothed ring 7 and the gear 8 is excessive, and the meshing between the toothed ring 7 and the gear 8 is not stable enough; the included angle r of the end part of the through hole 17 is larger than one hundred eighty degrees and smaller than two hundred seventy degrees, so that when the toothed ring 7 rotates, the lower die 2 can rotate one hundred eighty degrees, the die cavity of the lower die 2 is placed in a downward state, and casting stripping is facilitated.
Embodiment two:
referring to fig. 7, in a first comparative example, as another embodiment of the present invention, a pull rod 20 is penetrated through the upper half portion of the fixing plate 12, two ends of the pull rod 20 are fixedly connected with a fixing rod 19, and the end portion of the fixing rod 19 is fixedly connected to the outer end surface of the bracket 9; the pull rod 20 is matched with the fixing rod 19, so that the bracket 9 is fixed on the fixing plate 12, the bracket 9 is further fixed, and meanwhile, the stability of the rotating state or the static state of the toothed ring 7 is improved.
Referring to fig. 8, an automotive turbocharger housing casting process for producing an automotive turbocharger housing using any one of the automotive turbocharger housing casting molds described above, the automotive turbocharger housing casting process comprising the steps of:
s1: the die is manufactured, the upper die 1 and the lower die 2 are polished through machining, then the final repair is carried out through manual work, then the die core is manufactured according to the shape of the casting, and the die core is also required to be repaired, so that the corner burrs and pits are repaired, and the repair work of complex corners in the casting in the later stage is reduced;
s2: the method comprises the steps of (1) casting molten materials, horizontally fixing an upper die 1 through a hydraulic cylinder, supporting a lower die 2 through a demoulding mechanism, placing a die core in a die cavity of the lower die 2, attaching the lower die 2 to the upper die 1 through a demoulding mechanism, casting the molten materials, and starting a vibrating motor 4 to vibrate the molten materials in the die cavity so that the molten materials can permeate into each gap in the die cavity;
s3: and (3) demolding and blanking, wherein the upper die 1 is pulled up by the hydraulic cylinder, and then the lower die 2 is driven to rotate by the demolding mechanism, so that a die cavity of the lower die 2 faces downwards, a casting and the die core fall off the die assembly, and then the die cavity is subjected to impact cleaning by using the high-pressure air nozzle.
The temperature of the cooling liquid medium injected into the water supply pipe 5 is 5-10 c when the mold assemblies are attached to each other and the mold assemblies are separated from each other, and the temperature of the cooling liquid medium injected into the water supply pipe 5 is 0-2 c when the molten material is poured.
Working principle: according to the scheme provided by the embodiment of the invention, when the scheme is executed, after the upper die 1 is attached to the lower die 2, the vibration motor 4 is started, the vibration motor 4 drives the die assembly to vibrate, then molten material is injected into a die cavity of the die assembly from a pouring hole on the upper die 1, and in the process of flowing into the die cavity, the molten material is vibrated at high frequency of the die assembly, so that the molten material can fully flow and permeate into each gap in the die cavity and the die core, the number of pits on the surface of a casting is reduced, and the quality of the casting is improved; because the temperature of the molten material is higher, the temperature can be transmitted to the vibrating motor 4 in the concave part 3 through the die assembly, and the vibrating motor 4 can be damaged due to the high-temperature environment, so that a cooling circulation groove is arranged on the die assembly and is mainly used for cooling the running environment of the vibrating motor 4, a casting is cooled, and a cooling system of the die can be used for cooling the casting; the external water pump injects cooling liquid into the circulation groove through the water supply pipe 5, and then continuously cools the internal environment of the concave part 3, so that the running stability of the vibrating motor 4 is ensured;
the existing casting mould of the shell of the automobile turbocharger moves horizontally left and right, when demoulding, a casting is clamped on the mould, and the casting is required to be scratched out by a tool before a worker goes up, firstly, the high-temperature environment can cause injury to the on-site worker, secondly, the working is troublesome, and when the used blanking tool is mistakenly touched on the mould, the mould cavity is damaged, and the quality of the casting is affected; for this purpose, the mould assembly is arranged in a mode of opening and closing up and down; when the demoulding mechanism is executed, the gear 8 rotates to drive the toothed ring 7 to rotate, the toothed ring 7 rotates anticlockwise to drive the lower die 2 to separate from the upper die 1 and rotate, and the toothed ring 7 and the lower die 2 rotate anticlockwise by 180 degrees, so that the die cavity of the lower die 2 is in a downward state, and then a casting is separated from the die cavity of the lower die 2 due to self gravity, thereby realizing automatic stripping of the casting, avoiding the high-temperature danger of stripping when people go up and operate the stripping, and avoiding the use of a stripping tool to collide and damage the die; in the process of anticlockwise rotation of the lower die 2, the vibrating motor 4 can be started, and the vibrating motor 4 drives the casting to vibrate, so that the outer surface of the casting is separated from the die cavity, and the casting is helped to be separated from the die cavity;
before the lower die 2 is vibrated anticlockwise, the hydraulic cylinder is driven to drive the upper die 1 to move upwards, the moving distance is one third to one half of the height of the casting, then the toothed ring 7 is driven to rotate anticlockwise, and at the moment, when the lower die 2 drives the casting to rotate, the corner position of the casting cannot scratch the inner surface of the die cavity of the upper die 1 due to the rotating radius, so that the die cavity is protected, and meanwhile, the surface of the casting is protected; in the process that the upper die 1 moves upwards through a hydraulic cylinder, a vibrating motor 4 in the upper die 1 can be driven, so that a casting can be completely separated from a die cavity of the upper die 1, and the casting is placed in the die cavity of the lower die 2;
when the die assembly is matched, stable and accurate lamination of the upper die 1 and the lower die 2 is required to be ensured, gaps between the upper die 1 and the lower die 2 are reduced, and castings with fewer corner burrs at the casting positions can be cast, so that on the basis that the bracket 9 supports the toothed ring 7 and the lower die 2, the toothed ring 7 and the lower die 2 are further stabilized by arranging the guide wheels 11; the toothed ring 7 is arranged on symmetrically arranged guide wheels 11, the guide wheels 11 can not only support the toothed ring 7 upwards and stabilize, but also restrain the swing of two sides of the toothed ring 7, so that the stability of the toothed ring 7 in the rotating process is ensured, and meanwhile, the rotating stability of the lower die 2 is further improved, and the lower die 2 can be stably attached and extruded on the upper die 1;
the positions of the bracket 9 and the guide wheel 11 are in a fixed state, one end of a slide bar 14 on the end surface of the guide wheel 11 is sequentially embedded into the semicircular groove 13, the slide bar 14 is intermittently embedded into the semicircular groove 13 and is separated from the semicircular groove 13, so that the slide bar 14 generates vibration, the vibration is transmitted to the toothed ring 7 through the guide wheel 11, the toothed ring 7 transmits the vibration to the lower die 2, the vibration separation of castings in the lower die 2 is facilitated, and meanwhile, the vibration motor 4 is assisted to vibrate the lower die 2;
after the lower die 2 rotates to the attaching position of the upper die 1, the upper die 1 moves towards the lower die 2 through a hydraulic cylinder, the upper die 1 and the lower die 2 are attached together, meanwhile, a support frame 10 on the upper die 1 drives a locking plate 15 to approach towards the direction of the toothed ring 7, and a latch 16 on the locking plate 15 is embedded into teeth on the toothed ring 7 to further stabilize the rotation of the toothed ring 7, and meanwhile, the position of the lower die 2 is fixed, so that the attaching compactness between the lower die 2 and the upper die 1 is improved;
when the toothed ring 7 rotates, the inner side wall of the through hole 17 moves along the surface of the outer ring of the rod body 18, the rod body 18 and the bracket 9 lift the toothed ring 7 upwards, so that the toothed ring 7 can be stably meshed with the gear 8, the position of the toothed ring 7 is further limited by the cooperation of the rod body 18 and the through hole 17, the toothed ring 7 cannot move up and down, the stable meshing between the toothed ring 7 and the gear 8 is ensured, the toothed ring 7 is prevented from propping against the gear 8, the extrusion force is overlarge, the tooth abrasion is serious, or the meshing gap between the toothed ring 7 and the gear 8 is overlarge, and the meshing between the toothed ring 7 and the gear 8 is not stable enough.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (4)
1. The casting die for the shell of the automobile turbocharger comprises a die assembly, wherein the die assembly comprises an upper die (1), a lower die (2) and a die core; the method is characterized in that: concave parts (3) are respectively formed on two sides of a die cavity of the upper die (1) and the lower die (2), a vibrating motor (4) is fixedly connected in the concave parts (3), a circulation groove is formed in the periphery of the concave parts (3), the circulation groove is communicated with an external water supply pipe (5), and the water supply pipe (5) is communicated with an external water supply pump;
one side of the die assembly is provided with a demoulding mechanism; the demolding mechanism comprises a fixed block (6), a toothed ring (7) and a gear (8); the fixed blocks (6) are symmetrically and fixedly connected to two ends of the lower die (2), the two fixed blocks (6) are fixedly connected with a toothed ring (7) respectively, the outer ring of each toothed ring (7) is meshed with a gear (8), the two gears (8) are fixedly connected through a connecting shaft, and the middle position of the connecting shaft is connected with the output end of the gearbox; the top surfaces of the inner rings of the two toothed rings (7) are provided with arc brackets (9), and the inner rings of the brackets (9) are connected with the inner rings of the toothed rings (7) in a sliding manner;
the upper end face of the upper die (1) is fixedly connected with a support frame (10), and the upper end of the support frame (10) is fixedly connected with the output end of a hydraulic cylinder;
guide wheels (11) are symmetrically arranged on two sides of each bracket (9), the middle of each guide wheel (11) is concavely arranged, the inner ring of the toothed ring (7) is slidably connected to the concave position of each guide wheel (11), a connecting rod is fixedly connected between the two opposite guide wheels (11), and a fixing plate (12) is fixedly connected to the middle position of the connecting rod;
a semicircular groove (13) is formed in the end face of each toothed ring (7); a sliding rod (14) is penetrated through the end face of each guide wheel (11) in a sliding way, one end of the sliding rod (14) is connected to the end face of each guide wheel (11) through a tension spring, and the other end of the sliding rod (14) is hemispherical and is embedded into the semicircular groove (13);
a locking plate (15) is symmetrically and fixedly connected to one side of the supporting frame (10), a plurality of clamping teeth (16) are arranged at the lower end of each locking plate (15), and the clamping teeth (16) are matched with teeth of the toothed ring (7);
an arc-shaped through hole (17) is formed in the middle end face of the toothed ring (7), and the included angle r of the end part of the through hole (17) is larger than one hundred eighty degrees and smaller than two hundred seventy degrees; the inside of bracket (9) is equipped with many body of rod (18), and the tip of body of rod (18) runs through to through-hole (17) to the rigid coupling is in the outer terminal surface of bracket (9), and body of rod (18) outer lane closely cooperates through-hole (17) inside wall.
2. The automotive turbocharger housing casting mold of claim 1, wherein: the upper half part of the fixed plate (12) is penetrated with a pull rod (20), two ends of the pull rod (20) are fixedly connected with fixed rods (19), and the ends of the fixed rods (19) are fixedly connected on the outer end face of the bracket (9).
3. A casting process for producing an automobile turbocharger housing by using the automobile turbocharger housing casting mold according to any one of claims 1 and 2, characterized in that: the casting processing technology of the automobile turbocharger shell comprises the following steps:
s1: the manufacturing of the die, namely, the upper die (1) and the lower die (2) are polished through machining, then the final repair is carried out through manual work, then the die core is manufactured according to the shape of the casting, and the die core is also required to be repaired, so that the burrs and pits of corners are repaired, and the repair work of complex corners in the casting in the later stage is reduced;
s2: the method comprises the steps of (1) casting molten materials, horizontally fixing an upper die (1) through a hydraulic cylinder, supporting a lower die (2) through a demoulding mechanism, placing a die core in a die cavity of the lower die (2), attaching the lower die (2) to the upper die (1) through a demoulding mechanism, casting the molten materials, and starting a vibrating motor (4) to vibrate the molten materials in the die cavity so that the molten materials can permeate into each gap in the die cavity;
s3: and (3) demolding and blanking, wherein the upper die (1) is pulled up by the hydraulic cylinder, and then the lower die (2) is driven to rotate by the demolding mechanism, so that a die cavity of the lower die (2) faces downwards, a casting and the die core fall off the die assembly, and then the die cavity is impacted and cleaned by using the high-pressure air nozzle.
4. A casting process for a turbocharger housing of an automobile according to claim 3, wherein: when the mold components are mutually attached and separated, the temperature of the cooling liquid medium injected into the water supply pipe (5) is 5-10 ℃, and when the molten material is poured, the temperature of the cooling liquid medium injected into the water supply pipe (5) is 0-2 ℃.
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| CN202211221159.7A CN115533039B (en) | 2022-10-08 | 2022-10-08 | Casting die and processing technology for automobile turbocharger shell |
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| CN211221294U (en) * | 2019-10-21 | 2020-08-11 | 嘉兴市美畅工程科技有限公司 | Prefabricated part demoulding system |
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| CN215786679U (en) * | 2021-09-15 | 2022-02-11 | 深圳市协和辉五金制品有限公司 | Die-casting die for deep-cavity thin-wall shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211221294U (en) * | 2019-10-21 | 2020-08-11 | 嘉兴市美畅工程科技有限公司 | Prefabricated part demoulding system |
| CN211939015U (en) * | 2020-01-20 | 2020-11-17 | 无锡市华铸机械工业有限公司 | Gear type casting machine |
| CN214684215U (en) * | 2020-11-04 | 2021-11-12 | 苏州新联辉航空科技有限公司 | Die-casting die for machining metal parts |
| CN215587801U (en) * | 2021-08-18 | 2022-01-21 | 扬中市旭晨精密模锻有限公司 | Flange plate cooling type die convenient for demolding |
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