Cooling type turbocharger shell die-casting die

Abstract

The invention relates to the technical field of die-casting, in particular to a cooling type turbocharger shell die-casting die. The laminating die-casting device comprises a laminating die-casting mechanism, the laminating die-casting mechanism comprises a die frame body fixedly connected to an air cylinder piston rod, two symmetrical elastic laminating assemblies are slidably arranged on the inner surface, close to the edge, of the die frame body, and a piston driving assembly is arranged between the two elastic laminating assemblies; a containing space used for being matched with a mold inner container is formed in the front surface of the piston driving assembly. A cooling space used for containing cooling liquid is formed in the rear surface of the piston driving assembly. On one hand, the surfaces of the two mold liners are kept in an attached state and stretch out towards the outer side of the mold frame body along with the piston driving assembly, and on the other hand, under the action of atmospheric pressure, cooling liquid is introduced into the cooling space through the disturbance feeding assembly, and airflow in the containing space is extruded; cool air permeating from the piston driving assembly of the cooling liquid rapidly flows in the containing space, shell forming cooling is accelerated, and workers are prevented from being scalded.

Description

Technical Field

[0001] The present invention relates to the technical field of die casting, and more specifically, to a die-casting mold for a cooled turbocharger housing. Background Art

[0002] A turbocharger is an air compressor that increases the intake air volume by compressing air. When producing a turbocharger, a die-casting mold is required to cast the turbocharger housing. Currently, when using a die-casting mold, the upper mold shell and the lower mold shell cooperate to allow molten metal to enter the space between the upper mold shell and the lower mold shell to form the inner space for die-casting the turbocharger housing, and then the turbocharger housing is die-cast. However, there are the following defects in the die-casting process: Firstly, as the upper mold shell and the lower mold shell are fitted together, it is difficult to control the fitting strength between the upper mold shell and the lower mold shell. If the extrusion strength is too large, the mold shell is likely to be damaged. If the extrusion strength is too small, the upper mold shell and the lower mold shell are not tightly fitted, which affects the forming effect of the turbocharger housing. Secondly, after the molten metal forms the turbocharger housing according to the inner contour of the mold, the upper mold shell and the lower mold shell need to be separated before taking out. The heat of the formed shell has not completely dissipated. If the staff directly touches and perceives the temperature, it is very dangerous. In view of this, we propose a die-casting mold for a cooled turbocharger housing. Summary of the Invention

[0003] The purpose of the present invention is to provide a die-casting mold for a cooled turbocharger housing to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides a die-casting mold for a cooled turbocharger housing, including a working machine tool and two sets of symmetric cylinders fixedly connected to the inner surface of the working machine tool. It is characterized in that: the piston rods of the two cylinders are fixedly connected with a fitting die-casting mechanism, and the fitting die-casting mechanism includes a mold frame body fixedly connected to the piston rod of the cylinder, wherein: Two symmetric elastic fitting components are slidably arranged near the edge of the inner surface of the mold frame body, and a piston driving component is arranged between the two elastic fitting components; A placement space for adapting to the mold inner cavity is formed on the front surface of the piston driving component; A cooling space for accommodating coolant is formed on the rear surface of the piston driving component, and a disturbance feeding component is communicated with the cooling space. During the separation process of the two mold frame bodies, the coolant is driven into the cooling space and the air flow in the placement space is accelerated.

[0005] As a further improvement of the technical solution, the elastic fitting component at least includes two movable plates slidably arranged on both sides of the inner cavity of the mold frame body. The front end of the movable plate extends out of the inside of the mold frame body, and an elastic member is fixedly connected between the rear end and the end of the inner cavity of the mold frame body.

[0006] As a further improvement of this technical solution, limit frames are provided on both sides of the surface of the mold base body, and the interior of the limit frames is slidably adapted to the outer wall of the movable plate.

[0007] As a further improvement of this technical solution, the piston driving assembly at least includes piston plates fixedly connected to the ends of the two movable plates. The piston plates are slidably sealed inside the mold base body, and two symmetrical clamping plates are slidably arranged on the outer surface of the piston plates. The two clamping plates are used to clamp and fix the inner mold cavity inwardly.

[0008] As a further improvement of this technical solution, chutes are provided on the inner surfaces of the two movable plates near the piston plates. A power cavity is communicated near the center of the chute. The end of the power cavity communicates with the outside from the end of the movable plate, and two symmetrical clamping driving assemblies for driving the two clamping plates to gather inwardly are respectively arranged between the two chutes and the power cavity.

[0009] As a further improvement of this technical solution, the clamping driving assembly at least includes a transmission lead screw rotatably arranged inside the chute. The transmission lead screw is in threaded cooperation with the end of the clamping plate, and the end of the clamping plate is slidably adapted inside the chute, where: The clamping driving assembly further includes a turntable rotatably arranged near the end of the power cavity. Gear discs are connected to the outer walls of the turntable and the transmission lead screw, and a chain is engaged between the outer walls of the two gear discs.

[0010] As a further improvement of this technical solution, an air flow port is communicated on the outer wall of the mold base body near the front surface of the piston plate. The air flow port communicates with the placement space. A coolant port is communicated on the outer wall of the mold base body near the rear surface of the piston plate. The coolant port communicates with the cooling space.

[0011] As a further improvement of this technical solution, the disturbing feeding assembly at least includes a threaded cylinder communicated with the cooling space. The rear end thread of the threaded cylinder is located outside the mold base body, and a connecting screw sleeve is rotatably communicated.

[0012] As a further improvement of this technical solution, the outer wall of the threaded cylinder adopts a corrugated structure, and a one-way valve is arranged inside.

[0013] Compared with the prior art, the beneficial effects of the present invention: 1. In the die-casting mold of the cooling type turbocharger housing, before die-casting molding by fitting the surfaces of two mold bases, under the elastic force of the elastic fitting component, the rear surface of the inner mold is blocked by the piston driving component and exposed from the mold base. During the extrusion process of the two mold bases, the piston driving component is driven to slide into the mold base to adapt to the length of the inner mold, so that the inner surfaces of the two inner molds are fitted, allowing the molten metal to enter, and enabling the molten metal to adapt to the contour of the inner mold for die-casting molding. At the same time, the end of the elastic fitting component is extruded to generate a compressed resilience force, improving the contact effect between the two inner molds, facilitating sealing, and preventing leakage of molten metal.

[0014] 2. In the die-casting mold of the cooling type turbocharger housing, after the turbocharger housing is formed inside the two inner molds, two sets of symmetric cylinders drive the two mold bases to separate. Under the elastic force of the elastic fitting component during reset, on the one hand, the surfaces of the two inner molds still remain in a fitted state and extend outward from the mold base along with the piston driving component, preventing the housing from being directly separated before it is fully formed. On the other hand, the piston driving component slides outward. Under the action of atmospheric pressure, the coolant is introduced into the cooling space through the disturbance feeding component, and the airflow in the placement space is squeezed, enabling the cold air permeated by the coolant from the piston driving component to flow rapidly in the placement space, accelerating the cooling of the housing during molding, preventing scalding of the staff, and improving production efficiency. Description of the Drawings

[0015] Figure 1 It is the overall structure assembly schematic diagram of the present invention; Figure 2 It is the structure assembly drawing of the fitting die-casting mechanism of the present invention; Figure 3 It is the structure sectional view of the fitting die-casting mechanism of the present invention; Figure 4 It is the sectional view demonstration drawing of the fitting die-casting mechanism of the present invention; Figure 5 It is the structure schematic diagram of the elastic fitting component and the piston driving component of the present invention; Figure 6 It is the schematic diagram of the clamping driving component and the movable plate of the present invention; Figure 7 For the present invention Figure 5 Schematic diagram of the structure at position A; Figure 8 It is the structure schematic diagram of the disturbance feeding component of the present invention.

[0016] The meanings of each label in the figure are as follows: 100, working machine tool; 110, cylinder; 200, fitting die-casting mechanism; 210. Mold base body; 211. Limit frame; 212. Mold inner liner; 213. Air flow port; 214. Coolant port; 220. Elastic fitting assembly; 221. Movable plate; 222. Elastic member; 223. Chute; 224. Power chamber; 230. Piston drive assembly; 231. Piston plate; 232. Clamping plate; 233. Clamping drive assembly; 2331. Transmission lead screw; 2332. Gear disk; 2333. Chain; 2334. Turntable; 240. Disturbing feeding assembly; 241. Threaded cylinder; 242. Connecting sleeve; 243. Check valve. Detailed implementation manners

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-8 As shown, this embodiment provides a die-casting mold for a cooled turbocharger housing, including a working machine tool 100 and two groups of symmetric cylinders 110 fixedly connected to the inner surface of the working machine tool 100. The piston rods of the two cylinders 110 are fixedly connected with a fitting die-casting mechanism 200. The fitting die-casting mechanism 200 includes a mold base body 210 fixedly connected to the piston rod of the cylinder 110, where: Two symmetric elastic fitting assemblies 220 are slidably arranged near the edge of the inner surface of the mold base body 210, and a piston drive assembly 230 is arranged between the two elastic fitting assemblies 220; A placement space for adapting to the mold inner liner 212 is formed on the front surface of the piston drive assembly 230; A cooling space for accommodating coolant is formed on the rear surface of the piston drive assembly 230, and a disturbing feeding assembly 240 is communicated with the cooling space. When the two mold base bodies 210 are separated, air flow is driven into the placement space and coolant enters the cooling space.

[0019] As Figures 1-3 shown, the present invention takes into account that most of the inner liners in the current die-casting molds are not detachable, and the die-casting profiles in the die-casting molds are fixed, resulting in inconvenience in adapting to the production of turbocharger housings of different sizes and a small scope of use. Therefore, by installing the mold inner liner 212 in the placement space on the front surface of the piston drive assembly 230, the mold inner liner 212 can be conveniently disassembled as the placement space expands, improving the scope of application; Before the surfaces of the two die carrier bodies 210 are fitted together for die casting, under the elastic force of the elastic fitting assembly 220, the rear surface of the inner die 212 is blocked by the piston driving assembly 230 and exposed from the die carrier body 210. During the extrusion process of the two die carrier bodies 210, the piston driving assembly 230 is driven to slide into the die carrier body 210 to adapt to the length of the inner die 212, so that the inner surfaces of the two inner dies 212 are fitted together, allowing the molten metal to enter. The molten metal adapts to the contour of the inner die 212 and is die cast. At the same time, the end of the elastic fitting assembly 220 is extruded to generate a compressive resilience force, improving the contact effect between the two inner dies 212, facilitating sealing, and preventing leakage of the molten metal. Among them, it should be noted that pipelines for input and output of molten metal are connected and arranged at the joint of the two inner dies 212, and are led out in cooperation with the upper die shell or the lower die shell, so that the molten metal for manufacturing the turbocharger housing can enter to meet die casting. This is something that those skilled in the art can associate with and will not be elaborated here. When the upper die shell and the lower die shell are mutually extruded to die cast the molten metal along the contour of the inner liner, the extrusion strength cannot be buffered and controlled. If the extrusion strength is too large, it is easy to cause damage to the die shell. If the extrusion strength is too small, the upper die shell and the lower die shell will not fit tightly. And after the molten metal forms the turbocharger housing according to the contour of the inner liner, it is not convenient to cool the formed housing. Especially when the upper die shell and the lower die shell are directly separated, the molten metal has not been die cast yet, which is likely to affect the production quality. Therefore, after the turbocharger housing is formed inside the two inner dies 212, the two sets of symmetric cylinders 110 drive the two die carrier bodies 210 to separate. Under the resilience force of the elastic fitting assembly 220 during reset, on the one hand, the surfaces of the two inner dies 212 still remain in a fitted state and extend outward from the die carrier body 210 with the piston driving assembly 230, preventing the shell from being directly separated before it is fully formed. On the other hand, the piston driving assembly 230 slides outward. Under the action of atmospheric pressure, the coolant is introduced into the cooling space through the disturbed feeding assembly 240, and the air flow in the placement space is extruded, so that the cold air permeated by the coolant from the piston driving assembly 230 flows rapidly in the placement space, accelerating the cooling of the shell formation, preventing scalding of the staff, and improving production efficiency.

[0020] On the above basis, the specific structure needs to be disclosed in detail: First of all, to enable the elastic fitting assembly 220 to drive the piston driving assembly 230 to move and generate a resilience force to make the fitting effect between the surfaces of the two inner dies 212 better, the structure of the elastic fitting assembly 220 needs to be disclosed in detail. Please refer to Figure 5As shown, the elastic fitting component 220 includes at least two movable plates 221 that slide on both sides of the inner cavity of the mold frame body 210. The front end of the movable plate 221 extends out of the inside of the mold frame body 210, and an elastic member 222 is fixedly connected between the rear end and the end of the inner cavity of the mold frame body 210, realizing that one end of the elastic member 222 is fixedly connected to the end of the movable plate 221, and the other end is fixedly connected to the inner wall of the mold frame body 210. When the movable plate 221 slides into the mold frame body 210, the elastic member 222 is compressed between the inner wall of the mold frame body 210 and the end of the movable plate 221. When the two mold frame bodies 210 are fitted together, the front ends of the two movable plates 221 come into contact first, and under the extrusion force, they slide into the mold frame body 210, causing the elastic member 222 to stretch and generate a resilience force, which facilitates the subsequent sliding of the piston driving component 230 in the mold frame body 210.

[0021] Specifically, when the movable plate 221 slides inside the mold frame body 210, in order to limit the sliding direction of the movable plate 221, limiting frames 211 are provided on the surface of the mold frame body 210 near both sides. The inside of the limiting frames 211 is slidably adapted to the outer wall of the movable plate 221. When the front ends of the two movable plates 221 are fitted and slide, the movable plate 221 slides along the inside of the limiting frame 211, avoiding the deviation of the movable plate 221 during sliding and improving stability.

[0022] Then, to realize the sealed sliding of the piston driving component 230 inside the mold frame body 210, suck the coolant, and at the same time change the installation depth according to the thickness of the mold inner liner 212, it is necessary to further disclose the structure of the piston driving component 230. Please refer to again Figure 4 As shown, the piston driving component 230 includes at least piston plates 231 fixedly connected to the ends of the two movable plates 221. The piston plates 231 slide in the mold frame body 210 in a sealed manner, and two symmetrical clamping plates 232 are slidably arranged on the outer surface of the piston plates 231. The two clamping plates 232 are used to clamp and fix the mold inner liner 212 inwardly, realizing the connection and fixation of the mold inner liner 212 and the piston plates 231. During disassembly, only the clamping plates 232 need to be separated, improving the replacement convenience; As the piston plates 231 slide inside the mold frame body 210, the range extending out of the mold frame body 210 is changed, so as to adapt to the installation of mold frame bodies 210 of different sizes, which is beneficial to die-casting different-sized turbocharger housings; Moreover, when the movable plate 221 slides into the interior of the mold frame body 210 under force, it can drive the piston plate 231 to slide close to the end of the inner cavity of the mold frame body 210, which is beneficial to pushing out the liquid on the rear surface of the piston plate 231 from the mold frame body 210. After die casting, the movable plate 221 is disengaged from the extrusion force and reset, driving the piston plate 231 to slide towards the opening of the mold frame body 210, driving the front end of the mold inner liner 212 to extend out of the mold frame body 210. This not only allows it to contact the external air for heat dissipation, but also facilitates the removal of the die-cast shell, and at the same time, the liquid can be suctioned into the interior of the mold frame body 210, enabling the liquid to contact the piston plate 231 to exchange heat with the rear side of the mold inner liner 212, improving the cooling effect. Among them, the piston plate 231 can be made of materials with good heat and cold performance transfer, such as ceramics, stones, etc.

[0023] Moreover, as Figure 6 shown, to enable the two clamping plates 232 to slide on the surface of the piston plate 231 to clamp and fix the mold inner liner 212, it is necessary to open sliding grooves 223 on the inner surfaces of the two movable plates 221 close to the piston plate 231. A power cavity 224 is connected to the sliding groove 223 near the center. The end of the power cavity 224 communicates with the outside from the end of the movable plate 221, and two symmetric clamping drive components 233 for driving the two clamping plates 232 to converge inward are respectively provided between the two sliding grooves 223 and the power cavity 224.

[0024] Specifically, as Figures 6-7 shown, the clamping drive component 233 at least includes a transmission lead screw 2331 rotating inside the sliding groove 223. The transmission lead screw 2331 is in threaded fit connection with the end of the clamping plate 232, and the end of the clamping plate 232 is slidably fitted inside the sliding groove 223, where: The clamping drive component 233 further includes a turntable 2334 rotating near the end of the power cavity 224. Gear discs 2332 are connected to the outer walls of both the turntable 2334 and the transmission lead screw 2331. A chain 2333 is meshed between the outer walls of the two gear discs 2332. By the operator rotating the turntable 2334 in contact with the end of the power cavity 224, the chain 2333 is meshed to drive the two gear discs 2332 to rotate, driving the transmission lead screw 2331 to rotate, so that the end of the clamping plate 232 slides along the transmission lead screw 2331 and converges inward on the surface of the piston plate 231, clamping the mold inner liner 212 placed between the two clamping plates 232. The clamping force of the two clamping plates 232 closely fits the outer wall of the mold inner liner 212 to restrict the mold inner liner 212. When the transmission lead screw 2331 does not rotate, the two clamping plates 232 maintain a fixed effect to prevent the mold inner liner 212 from loosening. On the contrary, when rotating in the reverse direction, the two clamping plates 232 separate, facilitating the removal of the mold inner liner 212 from its interior.

[0025] Meanwhile, as Figure 2As shown, during the sliding process of the piston plate 231 inside the mold frame body 210, to meet the requirements of injecting coolant for cooling and accelerating air flow, an air flow port 213 needs to be communicatively provided on the outer wall of the mold frame body 210 near the front surface of the piston plate 231. The air flow port 213 communicates with the placement space. A coolant port 214 is communicatively provided on the outer wall of the mold frame body 210 near the rear surface of the piston plate 231. The coolant port 214 communicates with the cooling space. During the sliding process of the piston plate 231, when the coolant is introduced into the cooling space (such as Figure 4 the solid arrow), the cooling effect of the coolant will decrease after heat exchange. The heat-exchanged coolant can be discharged from the coolant port 214, which is convenient for re-injecting new coolant when the cooling is insufficient; Similarly, when the air flow flows in the placement space, it can be discharged from the air flow port 213 (such as Figure 4 the dashed arrow) to ensure the structural integrity.

[0026] Furthermore, to achieve the fitting of two mold frame bodies 210 and the fitting of two mold inner linings 212, when injecting coolant into the cooling space, the disturbance feeding component 240 needs to be disclosed in detail. Please refer to Figure 8 As shown, the disturbance feeding component 240 at least includes a threaded cylinder 241 communicating with the cooling space. The rear end thread of the threaded cylinder 241 is located outside the mold frame body 210 and is rotationally connected to a connecting screw sleeve 242. The outer wall of the threaded cylinder 241 has a corrugated structure, and a one-way valve 243 is provided inside. Through the pipeline connecting the connecting screw sleeve 242 to the coolant storage cylinder, when the piston plate 231 slides, the coolant enters the cooling space through the connecting screw sleeve 242, the one-way valve 243, and the threaded cylinder 241; At the same time, the one-way valve 243 can prevent the coolant from flowing back, ensuring the quality inside the coolant storage cylinder. The corrugated threaded cylinder 241 is convenient for stretching and changing the length at any time, improving the scope of application.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling type turbocharger housing die casting mold, comprising a working machine tool (100) and two groups of symmetrical cylinders (110) fixedly connected to the inner surface of the working machine tool (100), characterized in that: The piston rods of the two cylinders (110) are both fixedly connected to a fitting die-casting mechanism (200), and the fitting die-casting mechanism (200) comprises a mold frame body (210) fixedly connected to the piston rods of the cylinders (110), wherein: Two symmetrical elastic fitting components (220) are slidably disposed on the inner surface of the mold frame body (210) near the edge, and a piston driving component (230) is disposed between the two elastic fitting components (220); The front surface of the piston drive assembly (230) forms a placement space for fitting the mold liner (212); The rear surface of the piston drive assembly (230) forms a cooling space for accommodating cooling liquid, and the cooling space is connected to a disturbance feed assembly (240) that drives the cooling liquid into the cooling space during the separation of the two mold frame bodies (210) and accelerates the air flow in the placement space.

2. The cooling type turbocharger housing die casting mold according to claim 1, characterized in that: The elastic fitting component (220) comprises at least two movable plates (221) sliding on both sides of the inner cavity of the mold frame body (210), the front end of the movable plate (221) extending out of the interior of the mold frame body (210), and an elastic member (222) fixedly connected between the rear end and the inner cavity end of the mold frame body (210).

3. The cooled turbocharger housing die casting mold according to claim 2, characterized in that: The surface of the mold frame body (210) is provided with a limit frame (211) near both sides, and the interior of the limit frame (211) is slidably adapted to the outer wall of the movable plate (221).

4. The cooling type turbocharger housing die casting mold according to claim 3, characterized in that: The piston drive assembly (230) comprises at least a piston plate (231) fixedly connected to the ends of the two movable plates (221); the piston plate (231) is sealingly slidable inside the mold frame body (210); and two symmetrical clamping plates (232) are slidably provided on the outer surface of the piston plate (231); the two clamping plates (232) are used to gather inwards to clamp and fix the mold liner (212).

5. The cooling type turbocharger housing die casting mold according to claim 4, characterized in that: A slide groove (223) is provided on the inner surface of the two movable plates (221) near the piston plate (231); the slide groove (223) is connected to a power chamber (224) near the center; the end of the power chamber (224) is connected to the outside through the end of the movable plate (221); and two symmetrical clamping drive components (233) for driving the two clamping plates (232) to gather inward are respectively provided between the two slide grooves (223) and the power chamber (224).

6. The cooling type turbocharger housing die casting mold according to claim 5, characterized in that: The clamping drive assembly (233) at least comprises a transmission screw (2331) that rotates inside the slide groove (223), the transmission screw (2331) is threadedly connected to the end of the clamping plate (232), and the end of the clamping plate (232) is adapted to slide inside the slide groove (223), wherein: The clamping drive assembly (233) further comprises a rotating disk (2334) which rotates near the end of the power chamber (224); the rotating disk (2334) and the outer walls of the transmission screw rod (2331) are both connected to a gear disk (2332); and a chain (2333) is meshed between the outer walls of the two gear disks (2332).

7. The cooling type turbocharger housing die casting mold according to claim 4, characterized in that: An air flow port (213) is provided on the outer wall of the mold frame body (210) near the front surface of the piston plate (231), and the air flow port (213) is connected to the placement space. A coolant port (214) is provided on the outer wall of the mold frame body (210) near the rear surface of the piston plate (231), and the coolant port (214) is connected to the cooling space.

8. The cooled turbocharger housing die casting mold according to claim 4, characterized in that: The disturbance feed assembly (240) comprises at least a threaded barrel (241) connected to the cooling space, wherein the rear end of the threaded barrel (241) is threadedly located outside the mold frame body (210) and is rotatably connected to a connecting screw sleeve (242).

9. The cooled turbocharger housing die casting mold according to claim 8, characterized in that: The outer wall of the threaded barrel (241) has a corrugated structure and a one-way valve (243) is provided inside.

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