CN112517880B - Die casting die of precision die casting - Google Patents
Die casting die of precision die casting Download PDFInfo
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- CN112517880B CN112517880B CN202011461203.2A CN202011461203A CN112517880B CN 112517880 B CN112517880 B CN 112517880B CN 202011461203 A CN202011461203 A CN 202011461203A CN 112517880 B CN112517880 B CN 112517880B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2236—Equipment for loosening or ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Abstract
The invention discloses a die-casting die for a precision die-casting part, which comprises a movable die base plate, wherein an ejection mechanism is arranged on the upper surface of the movable die base plate, a supporting block is fixedly arranged on the upper surface of the movable die base plate, a supporting plate is fixedly arranged at the upper end of the supporting block, a mold core is arranged in the middle of the upper end of the supporting plate, a slag ladle shaping device is arranged in the mold core at a position close to the ejection mechanism, and a movable die sleeve plate is arranged at a position close to the mold core at the upper end of the supporting plate. According to the invention, the ejection mechanism is arranged, the moving block, the gear and the lifting rod are arranged in the push plate, the first telescopic rod is used for driving the push plate to ascend, and the push plate drives the gear to be in meshing transmission with the lifting rod, so that the ascending height and the ascending speed of the second ejector rod are improved compared with those of the first ejector rod, and the problems that products with special shapes cannot be ejected once, secondary ejection is needed, the cost of a die and the structural complexity of the die are increased, and the production and the manufacturing are not facilitated are solved.
Description
Technical Field
The invention relates to the technical field of die-casting dies, in particular to a die-casting die for a precision die-casting piece.
Background
Die casting is a metal casting process, and is characterized in that high pressure is applied to molten metal by utilizing a die cavity, the die is usually processed by using alloy with higher strength, the process is somewhat similar to injection molding, the manufacturing cost of casting equipment and the die is high, so the die casting process is generally only used for manufacturing a large number of products in batches, the manufacturing of die casting parts is relatively easy, generally only four main steps are needed, the single cost increment is very low, the die casting is particularly suitable for manufacturing a large number of small and medium-sized castings, the die casting is the most widely used one of various casting processes, and compared with other casting technologies, the die casting surface is more flat and has higher size consistency.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. when a finished product in the prior art is taken out of a mold, the ejection action of the finished product is finished once no matter a single ejection mechanism or a multi-ejector-rod ejection mechanism is adopted, but the shape of the produced finished product is special, if the finished product is still in a cavity after the primary ejection or the automatic demolding cannot be realized, the primary ejection action needs to be added, the cost of the mold is undoubtedly increased by arranging the secondary ejection mechanism, the structural complexity of the mold is increased, and the production and the manufacture are not facilitated; 2. the foundry goods is when the die-casting is moulding, ejection mechanism's ejector pin and molten metal liquid contact, treat that the metal liquid cooling solidifies the back, the contact position can produce the burr, and simultaneously, ejection mechanism can cause the indentation to the foundry goods surface when ejecting to the foundry goods, to accurate die casting, need increase the process of artifical polishing and reprocess, wastes time and energy, reduces production efficiency, and workman intensity of labour is great.
Therefore, a die casting die for precision die casting parts is provided.
Disclosure of Invention
The invention aims to provide a die-casting die for a precision die-casting part, which can be used for driving a push plate to ascend by using a first telescopic rod through arranging an ejection mechanism, arranging a movable block, a gear and a lifting rod in the push plate, driving the gear and the lifting rod to be in meshing transmission by using a first telescopic rod, and increasing the transmission speed of the gear and the movable block while keeping the same speed of a second ejector rod as that of the first ejector rod by using the movable block, so that the ascending height and the ascending speed of the second ejector rod are improved compared with those of the first ejector rod, the problems that a product with a special shape cannot be ejected once, secondary ejection is needed, the cost of the die and the structural complexity of the die are increased, and the production and the manufacturing are not facilitated are solved, by arranging a slag ladle shaping device, using the second telescopic rod to push an installation block and a flow limiting plate to move, and molten metal flows into a cavity at the upper end of the ejector rod to form a slag ladle, the casting is extruded when ejected, so that the casting is protected, burrs and ejector rod indentations are avoided, the slag ladle is shaped through the flow limiting plate, the slag ladle is easy to break and remove, the grinding is easy, the production efficiency is improved, the labor intensity of workers is reduced, and the problems in the background art are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a die casting die for precision die castings comprises a movable die base plate, wherein an ejection mechanism is arranged in the middle of the upper surface of the movable die base plate, a supporting block is fixedly arranged at the edge position of the upper surface of the movable die base plate, a supporting plate is fixedly arranged at the upper end of the supporting block, a core is arranged in the middle of the upper end of the supporting plate, a slag ladle shaping device is arranged in the core at a position close to the ejection mechanism, a movable die sleeve plate is arranged at a position close to the core at the upper end of the supporting plate, a fixed die sleeve plate is fixedly arranged at the edge position of the upper end of the supporting plate, a fixed die insert is arranged at the upper end of the core, a fixed die base is fixedly arranged at the upper end of the fixed die insert, and a pouring gate is formed in one end of the upper surface of the fixed die base in a penetrating manner;
the ejection mechanism comprises a first telescopic rod fixedly connected with the upper surface of the movable mold base plate, a push plate is fixedly mounted at the upper end of the first telescopic rod, a movable block is movably mounted at one end of the push plate, a second ejector rod is fixedly mounted at the upper end of the movable block, a gear is rotatably connected to the position, close to the movable block, of one end of the push plate, a lifting rod is arranged at the position, close to the gear, of one end of the push plate in a penetrating mode, the lower end of the lifting rod is fixedly connected with the movable mold base plate, and a first ejector rod is mounted at the other end of the push plate in an embedded mode;
the moulding device of sediment package is including setting up in the inside fixed block that is close to first ejector pin position of core, the one end fixed mounting of fixed block has the second telescopic link, second telescopic link one end fixed mounting has the installation piece, installation piece one end fixed mounting has the current-limiting plate.
When a finished product is taken out of a die, no matter a single ejection mechanism or an ejection mechanism with multiple ejector rods is adopted, the ejection action is completed once, but the shape of the produced finished product is special, if the finished product is still in a cavity after the ejection once, or the automatic demolding cannot be realized, the ejection action needs to be added once again, the cost of the die is increased undoubtedly by arranging a secondary ejection mechanism, the structural complexity of the die is increased, the production and the manufacture are not facilitated, the ejection mechanism can be arranged, a moving block, a gear and a lifting rod are arranged in the pushing plate, the pushing plate is driven by a first telescopic rod to ascend, the gear and the lifting rod are driven by the pushing plate to carry out meshing transmission, the second ejector rod is enabled to keep the same speed as the first ejector rod by the moving block, meanwhile, the transmission speed of the gear and the moving block is also increased, and the ascending height and the speed of the second ejector rod are improved compared with those of the first ejector rod, the problems that products with special shapes cannot be ejected out at one time, secondary ejection is needed, the cost of a die and the structural complexity of the die are increased, and production and manufacturing are not facilitated are solved; when the casting is formed by die casting, an ejector rod of the ejection mechanism is contacted with molten metal, after the molten metal is cooled and solidified, burrs are generated at the contact position, meanwhile, when the ejection mechanism ejects the casting, indentation can be caused on the surface of the casting, and for precise die casting, the manual polishing procedure needs to be added for repair, thereby wasting time and labor, reducing the production efficiency, and having higher labor intensity of workers, by arranging the slag ladle shaping device, the second telescopic rod is utilized to push the mounting block and the flow limiting plate to move, molten metal flows into a cavity at the upper end of the ejector rod to form a slag ladle, the first ejector rod and the second ejector rod extrude the slag ladle when a casting is ejected, the casting is protected, burrs and ejector rod indentations are avoided, the slag ladle is shaped through the flow limiting plate, the slag ladle is easy to break and remove, polishing is easy, production efficiency is improved, and labor intensity of workers is reduced; according to the invention, the slag ladle shaping device is matched with the ejection mechanism, so that a casting with a special shape can be ejected at one time, no indentation or burr is caused on the surface of the casting, and in addition, the slag ladle is convenient to remove and convenient to polish, so that the slag ladle shaping device is suitable for production and use of precision die castings.
Preferably, a direct-current pouring channel is arranged in the pouring gate, a buffer area is arranged at the bottom end of the direct-current pouring channel, and a plurality of buffer bulges are arranged on the inner wall of the buffer area.
During operation, the filling time of the molten metal is extremely short, the specific pressure and the flow rate of the molten metal are very high, the molten metal fills the cavity at a high speed to cause erosion of the cavity of the die, the working condition of the die-casting die is extremely severe, and the impact effect of alternating stress of chilling and heating can reduce the product quality and the service life of the die.
Preferably, the inside position that is close to the core of backup pad is provided with water cooling plant, water cooling plant is including the inlet tube and the outlet pipe that run through the backup pad setting, inlet tube and outlet pipe side surface one end through connection have first cooling tube, the position that inlet tube and outlet pipe side surface are close to first cooling tube is provided with the second cooling tube, the position that inlet tube and outlet pipe side surface are close to the second cooling tube is provided with the third cooling tube.
The during operation, the mould need cool off so that obtain fashioned foundry goods after pouring, the molten metal pours into the mould die cavity, release a large amount of heats in the time of the utmost point weak point, promote the mould temperature to improve, need take cooling measure to cool off the mould, therefore, in the processing production of mould, use to cooling device is comparatively common, the cooling device structure of prior art is complicated, the complexity of mould has been increased, be unfavorable for manufacturing and installation, through setting up water cooling plant, utilize the inlet tube to intake, rivers are respectively through first cooling tube, first cooling tube and third cooling tube cool down the mould core, the cooling effect is better, moreover, the steam generator is simple in structure, do benefit to manufacturing and installation.
Preferably, the water inlet pipe, the water outlet pipe, the first cooling pipe, the second cooling pipe and the third cooling pipe are all members made of platinum-rhodium alloy.
The water inlet pipe, the water outlet pipe, the first cooling pipe, the second cooling pipe and the third cooling pipe are all members made of platinum-rhodium alloy materials, so that the high-temperature resistance of the pipeline is improved, and the service life of the pipeline is prolonged.
Preferably, a guide pillar penetrates through the upper surface of the movable mold base plate at a position close to one side of the ejection mechanism, and the upper end of the guide pillar is fixedly connected with the support plate.
Through adopting above-mentioned technical scheme, the guide pillar is installed to one side position that movable mould bedplate upper surface is close to ejection mechanism runs through, and the guide pillar makes ejection mechanism promote more steadily, does benefit to the ejecting of foundry goods.
Preferably, the side surfaces of the moving block and the lifting rod facing the gear are both provided with a toothed surface, and the gear is meshed with the moving block and the lifting rod through the toothed surfaces respectively.
The gear is meshed with the moving block and the lifting rod through the tooth-shaped surfaces respectively, the second ejector rod is kept at the same speed as the first ejector rod through the moving block, and meanwhile the transmission speed of the gear and the moving block is increased, so that the lifting height and speed of the second ejector rod are improved compared with those of the first ejector rod.
Preferably, a sealing ring is arranged at the connecting position of the flow limiting plate and the mounting block, and the sealing ring is a ceramic component.
The connecting position of the flow limiting plate and the mounting block is provided with the sealing ring, the sealing ring can prevent metal liquid from flowing into the slag ladle shaping device, the sealing effect is improved, and the sealing ring made of ceramic materials is stronger in high-temperature resistance.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the ejection mechanism is arranged, the moving block, the gear and the lifting rod are arranged in the push plate, the first telescopic rod is used for driving the push plate to ascend, the push plate drives the gear to be in meshing transmission with the lifting rod, the second ejector rod is enabled to keep the same speed as the first ejector rod through the moving block, meanwhile, the transmission speed of the gear and the moving block is increased, the ascending height and speed of the second ejector rod are improved compared with those of the first ejector rod, and the problems that products with special shapes cannot be ejected once, secondary ejection is needed, the mold cost and the mold structure complexity are increased, and production and manufacturing are not facilitated are solved.
2. According to the invention, the slag ladle shaping device is arranged, the second telescopic rod is utilized to push the mounting block and the flow limiting plate to move, the molten metal flows into the cavity at the upper end of the ejector rod to form the slag ladle, the first ejector rod and the second ejector rod extrude the slag ladle when the casting is ejected, the casting is further protected, burrs and ejector rod indentations are avoided, and the slag ladle is shaped by the flow limiting plate, so that the slag ladle is easy to break and remove, the polishing is easy, the production efficiency is improved, and the labor intensity of workers is reduced; according to the invention, the slag ladle shaping device is matched with the ejection mechanism, so that a casting with a special shape can be ejected at one time, no indentation or burr is caused on the surface of the casting, and in addition, the slag ladle is convenient to remove and convenient to polish, so that the slag ladle shaping device is suitable for production and use of precision die castings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic structural diagram of an ejection mechanism according to the present invention;
FIG. 4 is a schematic structural view of a slag ladle shaping device according to the present invention;
FIG. 5 is a schematic view of a gate structure according to the present invention;
fig. 6 is a schematic structural diagram of the water cooling device of the present invention.
Description of reference numerals:
in the figure: 1. fixing a die holder; 2. a gate; 21. a direct current runner; 22. a buffer protrusion; 23. a buffer area; 3. a guide post; 4. an ejection mechanism; 41. pushing the plate; 42. a first telescopic rod; 43. a gear; 44. a lifting bar; 45. a first ejector rod; 46. a second ejector rod; 47. a moving block; 5. a movable mould seat plate; 6. a support block; 7. a support plate; 8. a slag ladle shaping device; 81. a fixed block; 82. a second telescopic rod; 83. mounting blocks; 84. a restrictor plate; 85. a seal ring; 9. a water cooling device; 91. a water inlet pipe; 92. a first cooling pipe; 93. a second cooling pipe; 94. a third cooling pipe; 95. a water outlet pipe; 10. a movable die sleeve plate; 11. a core; 12. a fixed die insert; 13. and (5) fixing the die sleeve plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution of a die casting mold for precision die casting:
a die-casting die for precision die castings is shown in figure 1 and comprises a movable die base plate 5, wherein an ejection mechanism 4 is arranged in the middle of the upper surface of the movable die base plate 5, a supporting block 6 is fixedly mounted at the edge position of the upper surface of the movable die base plate 5, a supporting plate 7 is fixedly mounted at the upper end of the supporting block 6, a core 11 is arranged in the middle of the upper end of the supporting plate 7, a slag ladle shaping device 8 is arranged in the core 11 at a position close to the ejection mechanism 4, a movable die sleeve plate 10 is arranged at a position close to the core 11 at the upper end of the supporting plate 7, a fixed die sleeve plate 13 is fixedly mounted at the edge position of the upper end of the supporting plate 7, a fixed die insert 12 is arranged at the upper end of the core 11, a fixed die insert 1 is fixedly mounted at the upper end of the fixed die insert 12, and a pouring gate 2 is arranged at one end of the upper surface of the fixed die base 1;
as shown in fig. 3, the ejection mechanism 4 includes a first telescopic rod 42 fixedly connected to the upper surface of the movable mold base plate 5, a push plate 41 is fixedly mounted at the upper end of the first telescopic rod 42, a movable block 47 is movably mounted at one end of the push plate 41, a second ejector rod 46 is fixedly mounted at the upper end of the movable block 47, a gear 43 is rotatably connected to a position of one end of the push plate 41 close to the movable block 47, a lifting rod 44 is mounted at a position of one end of the push plate 41 close to the gear 43 in a penetrating manner, the lower end of the lifting rod 44 is fixedly connected to the movable mold base plate 5, and a first ejector rod 45 is embedded in the other end of the push plate 41;
as shown in fig. 4, the slag ladle shaping device 8 includes a fixing block 81 disposed inside the core 11 and close to the position of the first push rod 45, a second telescopic rod 82 is fixedly mounted at one end of the fixing block 81, an installation block 83 is fixedly mounted at one end of the second telescopic rod 82, and a flow limiting plate 84 is fixedly mounted at one end of the installation block 83.
When a finished product is taken out of a mold, no matter the ejection mechanism 4 with a single ejector rod or multiple ejector rods is adopted, the ejection action is completed once, but the shape of the produced finished product is special, if the finished product is still in a cavity after being ejected once or the automatic demolding cannot be realized, the ejection action needs to be added once again, the cost of the mold is increased by arranging the secondary ejection mechanism 4, the structural complexity of the mold is increased, the production and the manufacture are not facilitated, the ejection mechanism 4 can be arranged, the moving block 47, the gear 43 and the lifting rod 44 are arranged in the push plate 41, the push plate 41 is driven to ascend by the first telescopic rod 42, the gear 43 and the lifting rod 44 are driven by the push plate 41 to be in meshing transmission, the second ejector rod 46 is enabled to keep the same speed as the first ejector rod 45 by the moving block 47, and meanwhile, the transmission speeds of the gear 43 and the moving block 47 are also increased, the lifting height and the lifting speed of the second ejector rod 46 are improved compared with those of the first ejector rod 45, and the problems that products with special shapes cannot be ejected once, secondary ejection is needed, the cost of a die and the structural complexity of the die are increased, and production and manufacturing are not facilitated are solved; when a casting is formed in a die-casting mode, the ejector rods of the ejection mechanism 4 are in contact with molten metal liquid, after the molten metal is cooled and solidified, burrs are generated at the contact positions, meanwhile, when the ejection mechanism 4 ejects the casting, indentations can be generated on the surface of the casting, for precise die-casting pieces, the manual polishing process needs to be added for repairing, time and labor are wasted, the production efficiency is reduced, the labor intensity of workers is high, through the arrangement of the slag ladle shaping device 8, the second telescopic rod 82 is used for pushing the mounting block 83 and the flow limiting plate 84 to move, the molten metal flows into the cavities at the upper ends of the ejector rods to form slag ladles, when the casting is ejected, the first ejector rods 45 and the second ejector rods 46 extrude the slag ladles to further protect the casting, the burrs and the indentations of the ejector rods are avoided, and the slag ladles are shaped through the flow limiting plate 84, so that the slag ladles are easy to break and remove, the polishing is easy, and the production efficiency is improved, the labor intensity of workers is reduced; according to the invention, the slag ladle shaping device 8 is arranged to be matched with the ejection mechanism 4, so that a casting with a special shape can be ejected at one time, no indentation or burr is caused on the surface of the casting, and in addition, the slag ladle is convenient to remove and convenient to polish, so that the slag ladle shaping device is suitable for production and use of precision die castings.
As a specific embodiment of the present invention, as shown in fig. 5, a straight runner 21 is disposed inside the gate 2, a buffer area 23 is disposed at a bottom end of the straight runner 21, and a plurality of buffer protrusions 22 are disposed on an inner wall of the buffer area 23; during operation, the filling time of the molten metal is extremely short, the specific pressure and the flow rate of the molten metal are very high, the molten metal fills the cavity at a high speed to cause erosion of the cavity of the die, the working condition for the die-casting die is extremely bad, and the impact effect of alternating stress of chilling and heating can reduce the product quality and the service life of the die.
As a specific embodiment of the present invention, as shown in fig. 6, a water cooling device 9 is disposed inside the support plate 7 at a position close to the mold core 11, the water cooling device 9 includes a water inlet pipe 91 and a water outlet pipe 95 disposed through the support plate 7, one end of the side surfaces of the water inlet pipe 91 and the water outlet pipe 95 is connected to a first cooling pipe 92 in a penetrating manner, a second cooling pipe 93 is disposed at a position close to the first cooling pipe 92 on the side surfaces of the water inlet pipe 91 and the water outlet pipe 95, and a third cooling pipe 94 is disposed at a position close to the second cooling pipe 93 on the side surfaces of the water inlet pipe 91 and the water outlet pipe 95; the during operation, the mould need cool off so that obtain fashioned foundry goods after pouring, the molten metal pours into the mould die cavity, release a large amount of heats in the time of the utmost point weak point, promote the mould temperature to improve, need take cooling measure to cool off the mould, therefore, in the processing production of mould, use to cooling device is comparatively common, the cooling device structure of prior art is complicated, the complexity of mould has been increased, be unfavorable for manufacturing and installation, through setting up water cooling plant 9, utilize inlet tube 91 to intake, rivers are respectively through first cooling tube 92, first cooling tube 92 and third cooling tube 94 cool down mould core 11, the cooling effect is better, moreover, the steam generator is simple in structure, do benefit to manufacturing and installation.
Specifically, as shown in fig. 6, the water inlet pipe 91, the water outlet pipe 95, the first cooling pipe 92, the second cooling pipe 93 and the third cooling pipe 94 are all made of a platinum-rhodium alloy material.
By adopting the technical scheme, the water inlet pipe 91, the water outlet pipe 95, the first cooling pipe 92, the second cooling pipe 93 and the third cooling pipe 94 are all members made of platinum-rhodium alloy, so that the high-temperature resistance of the pipeline is improved, and the service life of the pipeline is prolonged.
Specifically, as shown in fig. 1, a guide post 3 is penetratingly mounted on a side of the upper surface of the movable mold base plate 5 close to the ejection mechanism 4, and an upper end of the guide post 3 is fixedly connected with a support plate 7.
Through adopting above-mentioned technical scheme, 5 upper surfaces of movable mould bedplate run through in one side position that is close to ejection mechanism 4 and install guide pillar 3, and guide pillar 3 makes ejection mechanism 4 promote more steadily, does benefit to ejecting of foundry goods.
Specifically, as shown in fig. 3, the moving block 47 and the lifting rod 44 are provided with toothed surfaces on both sides facing the gear 43, and the gear 43 is engaged with the moving block 47 and the lifting rod 44 through the toothed surfaces.
By adopting the technical scheme, the gear 43 is meshed with the moving block 47 and the lifting rod 44 through the toothed surfaces respectively, the moving block 47 enables the second ejector rod 46 to keep the same speed as the first ejector rod 45, and meanwhile, the transmission speed of the gear 43 and the moving block 47 is increased, so that the lifting height and the speed of the second ejector rod 46 are improved compared with those of the first ejector rod 45.
Specifically, as shown in fig. 4, a sealing ring 85 is disposed at a connecting position of the restrictor plate 84 and the mounting block 83, and the sealing ring 85 is a ceramic member.
By adopting the technical scheme, the connecting position of the flow limiting plate 84 and the mounting block 83 is provided with the sealing ring 85, the sealing ring 85 can prevent metal liquid from flowing into the slag ladle shaping device 8, the sealing effect is improved, and the sealing ring 85 made of ceramic material has stronger high-temperature resistance.
The using method comprises the following steps: when the invention is used, firstly, molten metal is injected into a mold cavity through a pouring gate 2, a second telescopic rod 82 is started by arranging a slag ladle shaping device 8, the second telescopic rod 82 is utilized to push a mounting block 83 and a current limiting plate 84 to move so as to limit the cavity at the upper end of the ejector rod, the molten metal flows into the cavity at the upper end of the ejector rod to form a slag ladle, after a cast is cooled, the cast needs to be ejected by an ejection mechanism 4, the mounting block 83 and the current limiting plate 84 are retracted through the second telescopic rod 82, then the ejection is carried out through a movable block 47, a gear 43 and a lifting rod 44 on the ejection mechanism 4, the first telescopic rod 42 is utilized to drive a push plate 41 to ascend, the push plate 41 drives the gear 43 to be meshed with a lifting rod 44 for transmission, and the second ejector rod 46 keeps the same speed as the first ejector rod 45 through the movable block 47, and simultaneously increases the transmission speeds of the gear 43 and the movable block 47, make second ejector pin 46 compare first ejector pin 45 rise height and speed and all obtain improving, it is unable once ejecting to have solved the special product of shape, need carry out the secondary ejecting, increase the structural complexity of mould cost and mould, be unfavorable for the problem of manufacturing, and the cinder ladle can be protected the foundry goods, the foundry goods is ejecting back, utilize the cinder ladle breach that the current-limiting plate 84 formed, can break easily the cinder ladle and get rid of, the process of polishing again, the amount of labour is less, it is comparatively easy to polish, the production efficiency is improved, the labor intensity of workers is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a die casting die of accurate die casting, includes movable mould bedplate (5), its characterized in that: the middle position of the upper surface of the movable mold base plate (5) is provided with an ejection mechanism (4), the edge position of the upper surface of the movable mold seat plate (5) is fixedly provided with a supporting block (6), a supporting plate (7) is fixedly arranged at the upper end of the supporting block (6), a mold core (11) is arranged in the middle of the upper end of the supporting plate (7), a slag ladle shaping device (8) is arranged in the mold core (11) at a position close to the ejection mechanism (4), a movable mould sleeve plate (10) is arranged at the upper end of the supporting plate (7) close to the mould core (11), a fixed die sleeve plate (13) is fixedly arranged at the edge position of the upper end of the supporting plate (7), a fixed die insert (12) is arranged at the upper end of the core (11), a fixed die holder (1) is fixedly arranged at the upper end of the fixed die insert (12), one end of the upper surface of the fixed die holder (1) is provided with a pouring gate (2) in a penetrating way;
the ejection mechanism (4) comprises a first telescopic rod (42) fixedly connected with the upper surface of the movable mold base plate (5), a push plate (41) is fixedly mounted at the upper end of the first telescopic rod (42), a moving block (47) is movably mounted at one end of the push plate (41), a second ejector rod (46) is fixedly mounted at the upper end of the moving block (47), a gear (43) is rotatably connected to the position, close to the moving block (47), of one end of the push plate (41), a lifting rod (44) is installed at the position, close to the gear (43), of one end of the push plate (41) in a penetrating mode, the lower end of the lifting rod (44) is fixedly connected with the movable mold base plate (5), and a first ejector rod (45) is installed at the other end of the push plate (41) in an embedded mode;
the slag ladle shaping device (8) comprises a fixing block (81) which is arranged inside a mold core (11) and close to a first ejector rod (45), a second telescopic rod (82) is fixedly installed at one end of the fixing block (81), an installation block (83) is fixedly installed at one end of the second telescopic rod (82), and a flow limiting plate (84) is fixedly installed at one end of the installation block (83);
a direct-flow pouring channel (21) is arranged in the pouring gate (2), a buffer area (23) is arranged at the bottom end of the direct-flow pouring channel (21), and a plurality of buffer bulges (22) are arranged on the inner wall of the buffer area (23);
the side surfaces of the moving block (47) and the lifting rod (44) facing the gear (43) are respectively provided with a toothed surface, and the gear (43) is meshed with the moving block (47) and the lifting rod (44) through the toothed surfaces.
2. A die casting mold for precision die casting according to claim 1, wherein: the inside position that is close to core (11) of backup pad (7) is provided with water cooling plant (9), water cooling plant (9) are including inlet tube (91) and outlet pipe (95) that run through backup pad (7) setting, inlet tube (91) and outlet pipe (95) side surface one end through connection have first cooling tube (92), the position that inlet tube (91) and outlet pipe (95) side surface are close to first cooling tube (92) is provided with second cooling tube (93), the position that inlet tube (91) and outlet pipe (95) side surface are close to second cooling tube (93) is provided with third cooling tube (94).
3. A die casting mold for precision die casting according to claim 2, wherein: the water inlet pipe (91), the water outlet pipe (95), the first cooling pipe (92), the second cooling pipe (93) and the third cooling pipe (94) are all members made of platinum-rhodium alloy.
4. A die casting mold for precision die casting according to claim 1, wherein: the upper surface of the movable mold base plate (5) is provided with a guide pillar (3) at a position close to one side of the ejection mechanism (4), and the upper end of the guide pillar (3) is fixedly connected with the support plate (7).
5. A die casting mold for precision die casting according to claim 1, wherein: and a sealing ring (85) is arranged at the connecting position of the flow limiting plate (84) and the mounting block (83), and the sealing ring (85) is a ceramic component.
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| CN202011461203.2A CN112517880B (en) | 2020-12-08 | 2020-12-08 | Die casting die of precision die casting |
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| CN116352051B (en) * | 2023-04-05 | 2024-01-02 | 宁波赛维达技术股份有限公司 | Die-casting die and die-casting process |
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