Impeller die-casting die
By adopting a linked demolding mechanism and sealing mechanism in the impeller die-casting mold, combined with the design of the sealing component, the problems of liquid metal overflow and poor sealing in traditional molds are solved, efficient liquid metal sealing and mold protection are achieved, and production efficiency is improved.
Patent Information
- Application Number
- CN202510438743.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-06-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the casting process of traditional impeller die-casting molds, metal liquid is prone to overflow from the parting surface, causing flashes, and the sealing ring expands in a high-temperature environment, affecting the sealing effect and making it difficult to effectively prevent metal liquid leakage.
An impeller die-casting mold is designed, and a linkage system of a mold release mechanism and a sealing mechanism is adopted. By driving the motor to drive the reciprocating movement of the mold release mechanism and the sealing mechanism, the mold closing and demolding of the moving template and the fixed template are realized, and a sealing environment is formed around the template through sealing components (including damping rods, buffer telescopic rods and polyurethane sealing plates).
Effectively prevent liquid metal leakage, protect the mold from external pollution, extend the service life of the mold, improve the speed of the casting cycle, and improve production efficiency.
Smart Images
Figure CN120170047A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of die-casting, and more specifically, to an impeller die-casting mold. Background Art
[0002] An impeller die-casting mold is a die-casting mold specifically used for manufacturing impellers (key components in equipment such as water pumps and fans). Die-casting is a metal forming process in which molten metal is rapidly injected into the mold cavity under high pressure to produce parts with complex shapes and high-precision requirements.
[0003] When traditional impeller die-casting molds are used for casting, the upper template and the lower template need to be closed to complete the casting process. However, after closing the mold, when the molten metal is injected into the cavity under high pressure, it is very easy to overflow from the parting surface, thereby forming flash. To solve this problem, the traditional method is to use a sealing groove with a rubber ring to seal the parting part. However, since the sealing ring is in a high-temperature environment, it is easy to expand, causing it to shift in the sealing groove, thus affecting the sealing effect and making it difficult to effectively prevent the molten metal from overflowing from the parting surface. In view of this, we propose an impeller die-casting mold. Summary of the Invention
[0004] The purpose of the present invention is to provide an impeller die-casting mold to solve the problems raised in the above background art.
[0005] To achieve the above purpose, the present invention provides an impeller die-casting mold, including a stable support. On one side of the stable support, a moving template and a fixed template are respectively assembled. A demolding mechanism is provided at the bottom of the fixed template. A driving motor is fixedly installed at the bottom of one side of the stable support. The demolding and mold clamping are realized by driving the demolding mechanism to reciprocate through the driving motor. Utilize the driving force generated when the demolding mechanism moves upward to drive the sealing mechanism to clamp the moving template and the fixed template centrally, realizing the closing of the moving template and the fixed template. At the same time, the sealing mechanism forms a sealed environment around the fixed template and the moving template to seal the moving template and the fixed template. When the demolding mechanism moves downward, it drives the model inside the fixed template to move downward synchronously, gradually separating from the fixed template to realize demolding, and drives the sealing mechanism to move away, causing the sealing mechanism to move away from the moving template and the fixed template.
[0006] As a further improvement of this technical solution, a fixed plate is fixedly connected to one side of the top of the stable support. The top of the fixed plate is used to install an external injection mechanism, which is used to inject liquid metal into the mold cavity at high speed. A sliding groove is provided on the side of the stable support close to the moving template to assist the movement of the moving template.
[0007] As a further improvement of this technical solution, a hydraulic lifting rod is fixedly connected to the top of the moving template, and the top of the hydraulic lifting rod is connected to the bottom of the fixed plate. A sliding block is fixedly connected to one side of the moving template close to the stable support, and the sliding block slides in the sliding groove and is adapted to the sliding block; A fixed block is fixedly connected to the side of the fixed template opposite to the stable support, and the fixed block is fixedly connected to the stable support. A casting mold is slidably connected inside the fixed template.
[0008] As a further improvement of this technical solution, the demolding mechanism includes a bidirectional threaded rod splined to the output end of the driving motor. One end of the bidirectional threaded rod is threadedly connected to a moving plate. Both sides of the top of the moving plate are fixedly connected with top plates, and the top of the top plate is fixedly connected to the bottom surface of the casting mold. One side of the moving plate is slidably connected with a limiting plate, and the limiting plate is connected to the bottom surface of the fixed template.
[0009] As a further improvement of this technical solution, the sealing mechanism includes a power block threadedly connected to the other end of the bidirectional threaded rod. Two inclined rods are movably connected to both ends of the power block. One end of each of the two inclined rods is movably connected to a push rod. One end of the push rod is fixedly connected with a clamping plate, and a sealing component is arranged on one side of the clamping plate.
[0010] As a further improvement of this technical solution, a sliding rod is fixedly connected to one side of the push rod. One end of the sliding rod slides in a sliding track, and one end of the sliding track is fixedly connected to the stable support.
[0011] As a further improvement of this technical solution, the sealing component includes a damping rod fixedly connected to the clamping plate and buffer telescopic rods fixedly connected to the top and bottom of one side of the clamping plate. The buffer telescopic rod is composed of an inner rod and an outer rod and is used to buffer the clamping plate.
[0012] As a further improvement of this technical solution, a sealing plate is fixedly connected to the end of the damping rod away from the clamping plate. The sealing plate is made of polyurethane and has the characteristic of high bonding strength with the fixed template and the moving template. There are two sealing plates, and the two sealing plates are spliced into a rectangle to enclose and seal the fixed template and the moving template.
[0013] Compared with the prior art, the beneficial effects of the present invention: In this impeller die-casting mold, the sealing mechanism drives the inclined rod through the power block connected to one end of the bidirectional threaded rod, and then pushes the push rod to drive the sealing components (including damping rods, buffer telescopic rods, and sealing plates made of polyurethane material) on the clamping plate, so as to tightly surround the moving template and the fixed template, forming an effective sealing environment. This setting can not only effectively prevent the leakage of liquid metal, but also protect the mold from external pollution, thereby extending the service life of the mold. In addition, the relative movement of the two clamping plates not only realizes the clamping operation of the moving template and the fixed template, but also avoids the problem that the sealing plate in the sealing components is deformed due to high temperature, resulting in the leakage of liquid metal; The demolding mechanism and the sealing mechanism are linked through the same driving motor and the bidirectional threaded rod. When the demolding mechanism works, the sealing mechanism cooperates synchronously, automatically releases the seal during the demolding process, and automatically completes the seal during the mold closing process, without the need for additional time or steps to manually adjust the seal state, thereby accelerating the speed of the entire casting cycle and improving production efficiency.
[0014] In addition to the purposes, features, and advantages described above, the present invention has other purposes, features, and advantages. The following will refer to the drawings to further elaborate on the present invention in detail. Brief Description of the Drawings
[0015] Figure 1 is the overall structure assembly schematic diagram of the present invention; Figure 2 of the present invention Figure 1 schematic diagram at position A; Figure 3 is the schematic diagram of the cooperation relationship between the demolding mechanism and the sealing mechanism of the present invention; Figure 4 is the schematic diagram of the demolding mechanism of the present invention; Figure 5 is the schematic diagram of the assembly structure of the sealing mechanism of the present invention; Figure 6 is the schematic diagram of the partial structure disassembly of the sealing mechanism of the present invention; Figure 7 is the schematic diagram of the sealing components of the present invention.
[0016] The meanings of each label in the figure are as follows: 100, stable support; 101, moving template; 102, fixed template; 103, driving motor; 200, demolding mechanism; 201, bidirectional threaded rod; 202, moving plate; 203, top plate; 300, sealing mechanism; 301, power block; 302, inclined rod; 303, push rod; 304, clamping plate; 305, sealing components; 3051, damping rod; 3052, sealing plate. Detailed Description of the Embodiment
[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with 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. Embodiment
[0018] Please refer to Figure 1 - Figure 7 As shown, this embodiment provides an impeller die-casting mold, which includes a stable bracket 100. A moving template 101 and a fixed template 102 are respectively assembled on one side of the stable bracket 100. A demolding mechanism 200 is arranged at the bottom of the fixed template 102. A driving motor 103 is fixedly installed at the bottom on one side of the stable bracket 100. The demolding mechanism 200 is driven by the driving motor 103 to reciprocate to realize demolding and fixed die; The driving force generated when the demolding mechanism 200 moves upward is used to drive the sealing mechanism 300 to clamp the moving template 101 and the fixed template 102 in the middle, realizing the closing of the moving template 101 and the fixed template 102. At the same time, the sealing mechanism 300 forms a sealed environment around the fixed template 102 and the moving template 101 to seal the moving template 101 and the fixed template 102. When the demolding mechanism 200 moves downward, it drives the model inside the fixed template 102 to move downward synchronously, gradually separating from the fixed template 102 to realize demolding, and drives the sealing mechanism 300 to move away, so that the sealing mechanism 300 is away from the moving template 101 and the fixed template 102.
[0019] When using the impeller die-casting mold in the present invention, on the one hand, after the mold is closed, when the molten metal is injected into the cavity under high pressure, it is very easy to overflow from the parting surface and form flash. To solve this problem, the traditional method is to use a sealing groove with a rubber ring to seal the parting part. However, since the sealing ring is in a high-temperature environment, it is easy to expand, causing it to shift in the sealing groove, thus affecting the sealing effect and making it difficult to effectively prevent the molten metal from overflowing from the parting surface. Therefore, the sealing mechanism 300 drives the inclined rod 302 through the power block 301 connected to one end of the bidirectional threaded rod 201, and then pushes the push rod 303 to drive the sealing component 305 (including the damping rod 3051, the buffer telescopic rod, and the sealing plate 3052 made of polyurethane material) on the clamping plate 304 to tightly surround the moving template 101 and the fixed template 102, forming an effective sealing environment. This setting can not only effectively prevent the leakage of liquid metal but also protect the mold from external pollution, thereby extending the service life of the mold. In addition, the relative movement of the two clamping plates 304 not only realizes the clamping operation of the moving template 101 and the fixed template 102 but also avoids the problem that the sealing plate 3052 in the sealing component 305 is deformed due to high temperature, resulting in the leakage of liquid metal. On the other hand, the traditional demolding method uses simple tools to manually pry and knock the casting to demold it. This method is inefficient, easy to damage the casting, and relies on manpower. Moreover, it is difficult to accurately control the force and angle of manual prying and knocking, and it is very easy to cause scratches, dents, or even fractures on the surface of the casting during the demolding process. Therefore, by using the demolding mechanism 200 to achieve automatic demolding, when the driving motor 103 works, it will drive the bidirectional threaded rod 201 to rotate, and then drive the moving plate 202 (for demolding) and the power block 301 (for the sealing mechanism 300) threadedly connected to both ends of it to perform corresponding linear movements. The process of demolding and releasing the seal is realized through a single driving source, which not only simplifies the operation process but also greatly improves the production efficiency, reduces the need for manual intervention, and avoids the problem that it is difficult to accurately control the force and angle of manual prying and knocking. It is very unlikely to cause scratches, dents, or even fractures on the surface of the casting during the demolding process.
[0020] On this basis, the specific structure is disclosed in detail: To achieve the mold closing of the fixed template 102 and the moving template 101, as Figure 1 - Figure 2As shown in the figure, one side of the top of the stable support 100 is fixedly connected with a fixed plate. The top of the fixed plate is used to install an external injection mechanism, which is used to inject liquid metal into the mold cavity at high speed. A sliding groove is provided on one side of the stable support 100 close to the moving template 101 to assist the movement of the moving template 101. The top of the moving template 101 is fixedly connected with a hydraulic lifting rod, and the top of the hydraulic lifting rod is connected to the bottom of the fixed plate. A sliding block is fixedly connected to one side of the moving template 101 close to the stable support 100, and the sliding block slides in the sliding groove and is adapted to the sliding block. A fixed block is fixedly connected to the side of the fixed template 102 opposite to the stable support 100, and the fixed block is fixedly connected to the stable support 100. A casting mold is slidably connected inside the fixed template 102. Therefore, through the fixed connection between the fixed template 102 and the stable support 100, this connection method keeps the fixed template 102 in a fixed position, provides a stable installation carrier for the casting mold. The casting mold is slidably connected inside the fixed template 102, which is convenient for the casting mold to slide down smoothly inside the fixed template 102 during the demolding process, realizes the separation of the casting from the fixed template 102, and completes the demolding action. At the same time, it is also convenient to install, debug and replace the casting mold before production, improving the flexibility and convenience of production.
[0021] To achieve the smooth demolding of the demolding mechanism 200, as Figure 3 and Figure 4 shown, the demolding mechanism 200 includes a bidirectional threaded rod 201 splined to the output end of the drive motor 103. One end of the bidirectional threaded rod 201 is threadedly connected with a moving plate 202. Both sides of the top of the moving plate 202 are fixedly connected with top plates 203, and the top of the top plates 203 is fixedly connected to the bottom surface of the casting mold. One side of the moving plate 202 is slidably connected with a limiting plate, and the limiting plate is connected to the bottom surface of the fixed template 102. Therefore, when the moving plate 202 moves upward under the action of the bidirectional threaded rod 201, based on the principle of force transmission, the top plate 203 will transmit the upward thrust of the moving plate 202 to the casting mold, pushing the casting mold upward to realize the gradual separation of the casting from the fixed template 102 and complete the demolding operation. When the moving plate 202 moves downward, the casting mold also moves downward to reset. The top plate 203 increases the contact area with the casting mold, avoiding damage to the casting mold or the casting due to excessive local stress, ensuring the smoothness and reliability of the demolding process, being beneficial to improving the yield rate of the casting, reducing the scrap rate, and at the same time extending the service life of the casting mold and reducing the production cost. The limiting plate guides and limits the movement of the moving plate 202. Its principle is similar to that of a mechanical guide rail. When the moving plate 202 moves along the axial direction of the bidirectional threaded rod 201, the limiting plate restricts the movement trajectory of the moving plate 202 through sliding cooperation with the moving plate 202, making it always move in a straight line. At the same time, the limiting plate can also prevent the moving plate 202 from detaching from the bidirectional threaded rod 201 due to excessive movement. On the one hand, it ensures that the moving plate 202 moves along a predetermined path, improving the stability and accuracy of the operation of the demoulding mechanism 200 and avoiding equipment failures caused by the deviation or shaking of the moving plate 202. On the other hand, it effectively prevents damage to the bidirectional threaded rod 201 caused by excessive movement of the moving plate 202, guarantees the normal operation and service life of the demoulding mechanism 200, reduces the frequency of equipment maintenance and replacement of parts, and improves production efficiency.
[0022] To achieve the sealing of the fixed template 102 and the moving template 101, as Figure 3 - Figure 7 shown, the sealing mechanism 300 includes a power block 301 threadedly connected to the other end of the bidirectional threaded rod 201. Two inclined rods 302 are movably connected to both ends of the power block 301. One end of each of the two inclined rods 302 is movably connected to a push rod 303. One end of the push rod 303 is fixedly connected to a clamping plate 304, and a sealing assembly 305 is arranged on one side of the clamping plate 304. A sliding rod is fixedly connected to one side of the push rod 303. One end of the sliding rod is slidably connected to a sliding track, and one end of the sliding track is fixedly connected to the stable support 100. The sealing assembly 305 includes a damping rod 3051 fixedly connected to the clamping plate 304 and buffer telescopic rods fixedly connected to the top and bottom of one side of the clamping plate 304. The buffer telescopic rod is composed of an inner rod and an outer rod and is used to buffer the clamping plate 304. One end of the damping rod 3051 away from the clamping plate 304 is fixedly connected to a sealing plate 3052. The sealing plate 3052 is made of polyurethane and has the characteristic of high bonding strength with the fixed template 102 and the moving template 101. The number of the sealing plates 3052 is two, and the two sealing plates 3052 are spliced into a rectangle to enclose and seal the fixed template 102 and the moving template 101; Therefore, when the bidirectional threaded rod 201 rotates driven by the driving motor 103, the power block 301 moves along the axial direction of the rod based on the principle of screw drive. On the one hand, there is no need to configure an additional driving device, reducing equipment costs and energy consumption. On the other hand, it realizes the coordinated control of the demoulding and sealing actions. Through the unified regulation of the driving motor 103, the mold opening and closing and sealing processes are made more coherent and efficient, improving the overall production rhythm; The damping rod 3051 and the buffer telescopic rod in the sealing assembly 305 are fixedly connected to the clamping plate 304. The damping rod 3051 uses the viscous resistance of the internal damping medium to provide buffering when the sealing plate 3052 approaches the mold, slowing down its movement speed and avoiding impact damage. The buffer telescopic rod consists of an inner rod and an outer rod. When the clamping plate 304 contacts the mold instantaneously, the inner rod expands and contracts within the outer rod to absorb the impact energy. According to the principle of conservation of energy, the impact kinetic energy is converted into the elastic potential energy of the buffer telescopic rod and the heat energy of the damping rod 3051, etc. This buffering protection principle effectively protects the moving template 101, the fixed template 102, and the sealing plate 3052, extends the service life of each component, and reduces the downtime and cost expenditure caused by frequent component replacement; The sealing plate 3052 is made of polyurethane. By utilizing its characteristic of high bonding strength with the fixed template 102 and the moving template 101, two sealing plates 3052 are spliced into a rectangle to enclose the mold. The advantage of this sealing principle is that it can effectively prevent liquid metal from overflowing from the mold gap under the high pressure of die casting, ensure the forming quality of the casting, reduce the material waste and the equipment cleaning and maintenance cost caused by leakage, and improve the production efficiency and safety.
[0023] The working principle of the present invention: On one side of the top of the stable support 100, first fix the fixed plate, and then install the external injection mechanism on the top of the fixed plate. After preparation, start the hydraulic lifting rod, and the hydraulic lifting rod drives the moving template 101 to move downward until the moving template 101 and the fixed template 102 are closed. Immediately afterwards, the driving motor 103 is started, and its operation drives the bidirectional threaded rod 201 to start rotating. When the bidirectional threaded rod 201 rotates, the moving plate 202 threadedly connected to one end is restricted by the limiting plate and can only move axially. The moving plate 202 pushes the casting mold to move upward synchronously through the top-connected top plate 203. At the same time, the power block 301 threadedly connected to the other end of the bidirectional threaded rod 201 moves in the opposite direction to the moving plate 202. The inclined rods 302 movably connected to both ends of the power block 301 are displaced due to the movement of the power block 301, thereby driving the push rod 303 to move. The push rod 303 pushes the clamping plate 304 to move towards the moving template 101 and the fixed template 102, and relies on the sealing assembly 305 composed of the damping rod 3051, the buffer telescopic rod, and the polyurethane sealing plate 3052 to centeringly clamp the moving template 101 and the fixed template 102, forming a sealed environment around the two. At this time, the external injection mechanism starts to work, and injects the liquid metal into the mold cavity at high speed; After die casting is completed, the drive motor 103 rotates in reverse, and the bidirectional threaded rod 201 rotates in the opposite direction accordingly. The moving plate 202 drives the casting mold to move downward, causing the casting mold to gradually disengage from the fixed template 102, realizing the demolding operation. During this process, the power block 301 also moves in the opposite direction, driving the inclined rod 302 and the push rod 303, causing the clamping plate 304 to move away from the moving template 101 and the fixed template 102, and moving the sealing mechanism 300 away from the moving template 101 and the fixed template 102. The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry 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 are not used to 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. An impeller die-casting mold, comprising a stabilizing bracket (100), wherein a movable die plate (101) and a fixed die plate (102) are respectively mounted on one side of the stabilizing bracket (100), characterized in that: A demoulding mechanism (200) is provided at the bottom of the fixed mold plate (102); a driving motor (103) is fixedly mounted at the bottom of one side of the stabilizing bracket (100); the driving motor (103) drives the demoulding mechanism (200) to reciprocate to achieve demoulding and fixed mold; The driving force generated when the demoulding mechanism (200) moves upward is used to drive the sealing mechanism (300) to center and clamp the movable mold plate (101) and the fixed mold plate (102), so that the movable mold plate (101) and the fixed mold plate (102) are molded together, and a sealed environment is formed around the fixed mold plate (102) and the movable mold plate (101) through the sealing mechanism (300), thereby sealing the movable mold plate (101) and the fixed mold plate (102); The demoulding mechanism (200) moves downwards to gradually separate from the fixed mold plate (102), and synchronously drives the sealing mechanism (300) to move backwards, so that the sealing mechanism (300) moves away from the movable mold plate (101) and the fixed mold plate (102).
2. The impeller die-casting mold according to claim 1, characterized in that: A fixed plate is fixedly connected to one side of the top of the stabilizing bracket (100); the top of the fixed plate is used to install an external injection mechanism, which is used to press liquid metal into the mold cavity at high speed; a sliding groove is provided on one side of the stabilizing bracket (100) close to the movable mold plate (101) to assist in the movement of the movable mold plate (101).
3. The impeller die-casting mold according to claim 1, characterized in that: The top of the movable platen (101) is fixedly connected to a hydraulic lifting rod, and the top of the hydraulic lifting rod is connected to the bottom of the fixed plate, and the side of the movable platen (101) close to the stabilizing bracket (100) is fixedly connected to a sliding block, and the sliding block slides in the sliding groove and is adapted to the sliding block; A fixed block is fixedly connected to a side of the fixed template (102) opposite to the stabilizing bracket (100), and the fixed block is fixedly connected to the stabilizing bracket (100), and a casting mold is slidably connected inside the fixed template (102).
4. The impeller die-casting mold according to claim 1, characterized in that: The demoulding mechanism (200) comprises a bidirectional threaded rod (201) spline-connected to the output end of the driving motor (103); one end of the bidirectional threaded rod (201) is threadedly connected to a moving plate (202); both sides of the top of the moving plate (202) are fixedly connected to a top plate (203); the top of the top plate (203) is fixedly connected to the bottom surface of the casting mold; one side of the moving plate (202) is slidably connected to a limit plate; and the limit plate is connected to the bottom surface of the fixed mold plate (102).
5. The impeller die-casting mold according to claim 1, characterized in that: The sealing mechanism (300) comprises a power block (301) threadedly connected to the other end of the bidirectional threaded rod (201), both ends of the power block (301) are movably connected to two inclined rods (302), one end of the two inclined rods (302) are movably connected to a push rod (303), one end of the push rod (303) is fixedly connected to a clamping plate (304), and a sealing assembly (305) is provided on one side of the clamping plate (304).
6. The impeller die-casting mold according to claim 5, characterized in that: A sliding rod is fixedly connected to one side of the push rod (303), one end of the sliding rod is slidably connected to a sliding track, and one end of the sliding track is fixedly connected to the stabilizing bracket (100).
7. The impeller die-casting mold according to claim 5, characterized in that: The sealing assembly (305) comprises a damping rod (3051) fixedly connected to the clamping plate (304) and a buffer telescopic rod fixedly connected to the top and bottom of one side of the clamping plate (304); the buffer telescopic rod comprises an inner rod and an outer rod and is used to buffer the clamping plate (304).
8. The impeller die-casting mold according to claim 7, characterized in that: One end of the damping rod (3051) away from the clamping plate (304) is fixedly connected to a sealing plate (3052); the sealing plate (3052) is made of polyurethane and has the characteristic of high bonding strength with the fixed die plate (102) and the movable die plate (101); there are two sealing plates (3052); the two sealing plates (3052) are spliced into a rectangle to surround and seal the fixed die plate (102) and the movable die plate (101).