Cast copper rotor high-pressure vertical die casting machine

Abstract

The invention relates to the field of cast copper rotor production, in particular to a cast copper rotor high-pressure vertical die-casting machine which comprises an equipment frame, a machining platform capable of containing molten copper is arranged on the equipment frame, and a lower die capable of moving to the machining platform is arranged on the side portion of the equipment frame. A top mold matched with the lower mold is arranged on the equipment frame above the machining platform in a liftable mode, an injection module for pressurizing molten copper is arranged at the bottom end of the machining platform, and a demolding mechanism is arranged on the side portion of the equipment frame. According to the high-pressure vertical die-casting machine for the cast copper rotor, after molten copper is injected into the melting cup, the die-casting and demolding processes of the rotor are completed in a full-automatic mode, meanwhile, through cooperation of bottom injection of the molten copper and three-stage variable-speed pressurization during injection, it is ensured that the molten copper smoothly enters all holes of laminated rotor silicon steel sheets and end rings, gas is automatically exhausted, and the production efficiency is improved. And the rotor cylinder can be filled with the copper liquid, so that a casting is free of air holes inside and cracks outside, the quality is reliable, and the production efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of copper casting rotor production, in particular to a copper casting rotor high-pressure vertical die-casting machine. Background Art

[0002] Copper material has high electrical conductivity and corrosion resistance, so in order to reduce the energy loss of the motor during operation, increase efficiency and extend life, the best choice for manufacturing high-efficiency and energy-saving motors is to cast the rotor silicon steel sheets into copper.

[0003] The existing rotor copper casting in China and abroad uses horizontal die-casting technology and flat-push copper hydraulic casting. This die-casting technology has high equipment cost and complicated operation mode; the material cake is too large and the product cost is high; there are many pores inside the rotor, the casting quality is poor, and the yield rate is low; in large-scale production, there are certain safety hazards when operating the equipment. Therefore, how to overcome the defects and shortcomings of the above equipment has become a key technical problem that needs to be solved. Summary of the invention

[0004] The object of the present invention is to overcome the defects and shortcomings described in the background technology, thereby realizing a high-pressure vertical die-casting machine for casting copper rotors. After the molten copper is injected into the melting cup, the device can complete the entire die-casting and demolding process of the rotor in a fully automatic manner, and at the same time cooperate with the bottom injection of the molten copper and the three-stage variable speed boost during injection to ensure that the molten copper can smoothly enter all the pores of the stacked rotor silicon steel sheets and end rings, and automatically discharge the gas to keep the molten copper filling the rotor column, so as to ensure that there are no pores inside the casting and no cracks outside, with reliable quality and high production efficiency.

[0005] To achieve the above-mentioned invention object, the technical solution of the present invention is: a high-pressure vertical die-casting machine for casting copper rotors, comprising an equipment frame, on which a processing platform for placing copper liquid is arranged. A lower die movable to the processing platform is arranged on the side of the equipment frame, and a top die matching with the lower die is arranged on the equipment frame above the processing platform in a manner that can be raised and lowered. A shot module for pressurizing the copper liquid is arranged at the bottom end of the processing platform. A demoulding mechanism is arranged on the side of the equipment frame.

[0006] In the above-mentioned copper rotor high pressure vertical die casting machine, a die delivery frame is fixedly arranged on the side of the equipment frame, and the lower die is slidably arranged on the die delivery frame. A tool table is fixedly arranged at the end of the die delivery frame to facilitate the storage of tools.

[0007] A fixed shielding plate is fixedly arranged on the equipment frame perpendicular to the direction of the mold feeding frame, and two fixed shielding plates are arranged and are respectively located at the two ends of the processing platform. The equipment frame is provided with a movable shielding plate that can be raised and lowered on the equipment frame, and two movable shielding plates are arranged and are respectively located at the other two ends of the processing platform. The processing area can be shielded during copper casting to prevent the splashing of copper liquid from causing damage to the equipment and workers.

[0008] A hydraulic station is arranged on the side of the equipment frame to provide die-casting power for the entire copper casting process.

[0009] In the above-mentioned copper rotor high-pressure vertical die-casting machine, a first hydraulic rod controlled by a hydraulic station is vertically fixedly arranged at the top of the equipment frame, and the telescopic end of the first hydraulic rod is fixedly arranged on a movable shielding plate on one side of the die feeding frame. At least one set of rollers and a pull rope wound around the rollers are rotatably arranged at the top of the equipment frame, and the two movable shielding plates are connected by the pull rope. The movable shielding plates can be moved simultaneously, which is convenient for entering and exiting the mold and for workers to pour the copper liquid into the processing position.

[0010] In the above-mentioned copper casting rotor high-pressure vertical die-casting machine, the lower die includes a feeding die plate slidably arranged on the feeding die frame, and the feeding die plate is integrally fixedly arranged with a die. The bottom edge of the die is provided with a plurality of through holes through which molten copper can pass, and the molten copper can be poured into the die by bottom pouring to achieve copper casting. A demoulding hole is provided in the middle of the bottom of the die, which runs through from top to bottom. It is convenient to take out the rotor after copper casting.

[0011] A melting cup is fixedly arranged on the processing platform, and guide rails for moving the template are arranged on the processing platforms on both sides of the melting cup.

[0012] In the above-mentioned copper rotor high-pressure vertical die-casting machine, a demoulding cavity is provided inside the die delivery frame, and a demoulding groove connected to the demoulding cavity is provided on the die delivery frame below the demoulding hole of the mold. This facilitates subsequent demoulding. A second hydraulic rod controlled by a hydraulic station is fixedly arranged horizontally at the bottom of the tool table, and the telescopic end of the second hydraulic rod penetrates the demoulding cavity and is fixedly arranged at the bottom of the die delivery plate. The mold is moved in a fully automatic manner, so that the mold is moved to the processing position and the demoulding position.

[0013] In the above-mentioned copper rotor high-pressure vertical die-casting machine, the top mold includes guide columns fixedly arranged vertically at the four corners of the equipment frame, and a lifting and lowering pressure plate is horizontally arranged above the melting cup, and each of the guide columns penetrates the pressure plate and is slidingly arranged with the pressure plate. A top plate located directly above the melting cup is fixedly arranged at the bottom end of the pressure plate. A third hydraulic rod is fixedly arranged vertically at the top end of the equipment frame, and the telescopic end of the third hydraulic rod is fixedly arranged at the top end of the pressure plate. The top plate can be moved, which is convenient for the movement of the lower mold and the casting of the rotor.

[0014] A first booster controlled by a hydraulic station is fixedly arranged on the top of the equipment frame, and the hydraulic station drives the third hydraulic rod to work through the booster.

[0015] In the above-mentioned high-pressure vertical die-casting machine for casting copper rotors, the injection module includes an injection head that can be raised and lowered in the middle of the melting cup. A mounting plate is fixedly provided at the bottom of the equipment frame, and a gas push rod is vertically fixedly provided in the middle of the mounting plate, and the telescopic end of the gas push rod is fixedly provided with the bottom end of the injection head. A first position sensor is fixedly provided on the side of the mounting plate, and the movable end of the first position sensor is fixedly provided with the telescopic end of the gas push rod. The injection head is raised and lowered inside the melting cup, so that the copper liquid is squeezed into the mold to cast the rotor.

[0016] A nitrogen pump is fixedly arranged on the side of the equipment frame, and the nitrogen pump drives the gas push rod to work through a second supercharger fixedly arranged at the gas delivery end of the nitrogen pump. The second supercharger is used to realize three-level speed control of injecting copper liquid.

[0017] In the above-mentioned copper rotor high-pressure vertical die-casting machine, the demoulding mechanism includes a working plate fixedly arranged inside the demoulding cavity. A fourth hydraulic rod controlled by a hydraulic station is vertically fixedly arranged in the middle of the working plate, and a push rod that can be inserted into the demoulding hole is fixedly arranged at the telescopic end of the fourth hydraulic rod. The demoulding of the rotor in the mold is realized. A limit plate is fixedly arranged on the telescopic part of the fourth hydraulic rod, and a limit rod that cooperates with the limit plate is fixedly arranged on the top of the working plate. It is ensured that the telescopic part of the fourth hydraulic rod will not rotate.

[0018] The telescopic end of the fourth hydraulic rod is provided with a detection groove, and the top end of the working plate is vertically fixed with at least one second position sensor matched with the detection groove.

[0019] Compared with the prior art, the high-pressure vertical die-casting machine for casting copper rotors of the present invention has at least the following beneficial effects:

[0020] 1. The high-pressure vertical die-casting machine for casting copper rotors of the present invention can start the entire die-casting and demolding process of the rotor in a fully automatic manner after the copper liquid is injected into the melting cup, and at the same time cooperate with the bottom injection of the copper liquid and the three-stage variable speed boost during injection to ensure that the copper liquid can smoothly enter all the pores of the stacked rotor silicon steel sheets and end rings, and automatically discharge the gas to keep the copper liquid filling the rotor column, so as to ensure that there are no pores inside the casting and no cracks outside, with reliable quality and high production efficiency.

[0021] 2. The high-pressure vertical die-casting machine for casting copper rotors of the present invention has a processing platform for placing molten copper on the equipment frame, and a shot-casting module for pressurizing the molten copper is provided at the bottom of the processing platform, which can realize copper casting of the rotor by bottom die-casting, ensure the internal pressure of the mold during copper casting, and enable the molten copper to smoothly enter all corners of the mold.

[0022] 3. The high-pressure vertical die-casting machine for copper casting rotors of the present invention has a lower die movable to the processing platform provided on the side of the equipment frame, and a top die matched with the lower die is liftably provided on the equipment frame above the processing platform, and the upper and lower dies can be moved in a fully automatic manner, which is convenient for work before and after copper casting, and can form a closed space during copper casting, providing a basis for subsequent die-casting.

[0023] 4. The high-pressure vertical die-casting machine for copper-casting rotors of the present invention has a demoulding mechanism on the side of the equipment frame, which can automatically demould the rotor after copper casting, making it convenient for staff to operate, while also speeding up production and increasing production efficiency.

[0024] 5. The high-pressure vertical die-casting machine for copper rotors of the present invention is provided with a fixed shielding plate on an equipment frame perpendicular to the direction of the die feeding frame, and the equipment frame is provided with a movable shielding plate that can be raised and lowered on the equipment frame, which can shield the processing area when the copper die-casting of the rotor is carried out to avoid damage to the equipment and workers caused by copper liquid splashing, and at the same time can leak the processing position, which is convenient for the entry and exit of the mold and convenient for workers to pour the copper liquid into the melting cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the copper rotor high pressure vertical die casting machine of the present invention;

[0026] Figure 2 The invention discloses a high pressure vertical die casting machine for casting copper rotors. Figure 1 A magnified image of area A;

[0027] Figure 3 It is a schematic diagram of the position of the mounting plate of the high-pressure vertical die-casting machine for casting copper rotors of the present invention;

[0028] Figure 4 It is a schematic diagram of the internal structure of the die-feeding frame of the copper rotor high-pressure vertical die-casting machine of the present invention;

[0029] Figure 5 It is a schematic diagram of the position of the first position sensor of the copper rotor high pressure vertical die casting machine of the present invention;

[0030] Figure 6 It is a schematic structural diagram of a demoulding mechanism of a high-pressure vertical die-casting machine for casting copper rotors of the present invention;

[0031] Figure 7 The present invention is a schematic diagram of the lower die structure of the high pressure vertical die casting machine for casting copper rotors.

[0032] In the figure: 1. Equipment rack; 2. Processing platform;

[0033] 3. Lower mold; 31. Template delivery; 32. Mold; 33. Through hole; 34. Demolding hole;

[0034] 4. Top mold; 41. Guide column; 42. Press plate; 43. Top plate;

[0035] 5. Shot-jet module; 51. Shot-jet head; 52. Mounting plate; 53. Air push rod; 54. First position sensor; 55. Nitrogen pump; 56. Second booster;

[0036] 6. Demolding mechanism; 61. Working plate; 62. Fourth hydraulic rod; 63. Ejector rod; 64. Limit plate; 65. Limit rod; 66. Detection slot; 67. Second position sensor;

[0037] 7. Mold delivery frame; 8. Tool table; 9. Fixed shielding plate; 10. Movable shielding plate; 11. Hydraulic station; 12. First hydraulic rod; 13. Roller; 14. Pull rope; 15. Melting cup; 16. Guide rail; 17. Demolding cavity; 18. Demolding groove; 19. Second hydraulic rod; 20. Third hydraulic rod; 21. First supercharger. DETAILED DESCRIPTION

[0038] The following is a more detailed description of the copper rotor high pressure vertical die casting machine of the present invention in conjunction with the accompanying drawings and through specific implementation methods.

[0039] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] See also Figure 1-Figure 7The high-pressure vertical die-casting machine for copper rotors of this embodiment can start the entire die-casting and demolding process of the rotor in a fully automatic manner after the copper liquid is injected into the melting cup, and at the same time cooperate with the bottom injection of the copper liquid and the three-stage variable speed supercharging during the injection to ensure that the copper liquid can smoothly enter all the pores of the rotor silicon steel sheets and end rings after the stacking, and automatically discharge the gas to keep the copper liquid full of the rotor cylinder, so as to ensure that there are no pores inside the casting and no cracks outside, with reliable quality and high production efficiency. Different from the popular horizontal die-casting machines produced by the Swiss Buhler Group in the world, the manufacturing cost is reduced by 60% compared with similar horizontal die-casting machines, and the yield rate is increased by 30%, reaching 98%. In this embodiment, it mainly includes an equipment frame 1, which is set on the ground. A die-feeding frame 7 is fixedly provided on the side of the equipment frame 1, and a tool table 8 is fixedly provided on the end of the die-feeding frame 7 to facilitate the storage of tools. A hydraulic station 11 is provided on the side of the equipment frame 1 to provide die-casting power for the entire copper casting process. The equipment frame 1 is provided with a processing platform 2 for placing the copper liquid. A fixed shielding plate 9 is fixedly provided on the equipment frame 1 perpendicular to the direction of the mold feeding frame 7, and two fixed shielding plates 9 are provided and are respectively located at the two ends of the processing platform 2. The equipment frame 1 is provided with a movable shielding plate 10 that can be raised and lowered on the equipment frame 1, and two movable shielding plates 10 are provided and are respectively located at the other two ends of the processing platform 2.

[0041] A first hydraulic rod 12 controlled by a hydraulic station 11 is vertically fixed at the top of the equipment frame 1, and a telescopic end of the first hydraulic rod 12 is fixed on a movable shielding plate 10 on one side of the die-feeding frame 7. At least one set of rollers 13 and a pull rope 14 wound around the rollers 13 are rotatably provided at the top of the equipment frame 1, and the two movable shielding plates 10 are connected by the pull rope 14.

[0042] When the mold 32 needs to be moved, the first hydraulic rod 12 is controlled by the hydraulic station 11 to work, and the movable shielding plate 10 is moved upward. At this time, the movable shielding plates 10 at the opposite ends are simultaneously lowered under the action of the pull rope 14, thereby exposing the processing platform 2. It is convenient for entering and exiting the mold 32 and for workers to pour molten copper into the processing position. When casting copper, the movable shielding plate 10 is moved downward by the first hydraulic rod 12 to shield the processing area to prevent the splashing of molten copper from causing damage to equipment and workers.

[0043] In order to realize the movement and die casting of the mold 32 by an automatic method, see Figure 3-Figure 5, a lower mold 3 movable to the processing platform 2 is arranged on the side of the equipment frame 1, and the lower mold 3 can be slidably arranged on the mold delivery frame 7. The lower mold 3 includes a delivery template 31 slidably arranged on the mold delivery frame 7, and a mold 32 is fixedly arranged on the delivery template 31. The bottom edge of the mold 32 is provided with a plurality of through holes 33 through which the copper liquid can pass, and the copper liquid can be poured into the mold 32 by bottom pouring, which reduces the chance of air being drawn in when the metal flows, and can achieve a faster filling speed, thereby shortening the production cycle. A demoulding hole 34 running through the bottom middle of the mold 32 is provided. It is convenient to take out the rotor after copper casting.

[0044] A demolding cavity 17 is provided inside the mold delivery frame 7, and a demolding groove 18 connected to the demolding cavity 17 is provided on the mold delivery frame 7 below the demolding hole 34 of the mold 32. A second hydraulic rod 19 controlled by the hydraulic station 11 is fixedly arranged horizontally at the bottom of the tool table 8, and the telescopic end of the second hydraulic rod 19 penetrates the demolding cavity 17 and is fixedly arranged at the bottom of the mold delivery template 31. A melting cup 15 is fixedly arranged on the processing platform 2, and guide rails 16 for moving the mold delivery template 31 are arranged on the processing platform 2 on both sides of the melting cup 15. The second hydraulic rod 19 is controlled by the hydraulic station 11 to move the mold 32 and the mold delivery template 31 on the guide rail 16, so that the mold 32 is moved to the processing position and the demolding position.

[0045] A top die 4 cooperating with the lower die 3 is provided on the equipment frame 1 above the processing platform 2 in a liftable manner. The top die 4 includes guide columns 41 fixed vertically at the four corners of the equipment frame 1, and a liftable pressing plate 42 is provided horizontally above the melting cup 15, and each of the guide columns 41 penetrates the pressing plate 42 and slides with the pressing plate 42. A top plate 43 located directly above the melting cup 15 is fixedly provided at the bottom end of the pressing plate 42, and an exhaust hole is provided on the top plate 43. A third hydraulic rod 20 is fixed vertically at the top end of the equipment frame 1, and the telescopic end of the third hydraulic rod 20 is fixedly provided with the top end of the pressing plate 42. A first supercharger 21 controlled by the hydraulic station 11 is fixedly provided at the top end of the equipment frame 1. The first supercharger 21 is a mature prior art and will not be described in detail here. The hydraulic station 11 drives the third hydraulic rod 20 to work through the supercharger. The hydraulic station 11 controls the operation of the third hydraulic rod 20 through the booster, so that the pressure plate 42 moves on the guide column 41, and the top plate 43 is raised and lowered, which is convenient for the movement of the lower mold 3, and at the same time ensures the sealing inside the mold 32 during the rotor die-casting to avoid copper liquid splashing.

[0046] In order to achieve multi-stage variable speed die casting of copper liquid, see Figure 1-Figure 5, a shot module 5 for pressurizing the copper liquid is arranged at the bottom of the processing platform 2. The shot module 5 is arranged underground. The shot module 5 includes a shot head 51 which can be raised and lowered in the middle of the melting cup 15. A mounting plate 52 is fixedly arranged at the bottom of the equipment frame 1, and a gas push rod 53 is vertically fixedly arranged in the middle of the mounting plate 52, and the telescopic end of the gas push rod 53 is fixedly arranged with the bottom end of the shot head 51. A first position sensor 54 is fixedly arranged on the side of the mounting plate 52, and the first position sensor 54 is a mature existing technology and will not be described in detail here. The movable end of the first position sensor 54 is fixedly arranged with the telescopic end of the gas push rod 53. The lifting and lowering of the shot head 51 inside the melting cup 15 is realized, so that the copper liquid is squeezed into the mold 32 to perform copper die casting of the rotor. A nitrogen pump 55 is fixedly arranged on the side of the equipment frame 1, and the nitrogen pump 55 drives the gas push rod 53 to work through a second supercharger 56 fixedly arranged at its gas delivery end. The nitrogen pump 55 provides injection power for the entire die-cast copper rotor process. The second supercharger 56 realizes three-stage speed control of injecting copper liquid. The second supercharger 56 is a multi-stage speed supercharger, which is a mature prior art and will not be described in detail here.

[0047] The nitrogen pump 55 is controlled to work by the hydraulic station 11. At this time, the nitrogen drives the gas push rod 53 after passing through the second supercharger 56, so that the injection head 51 moves upward in the melting cup 15, and the copper liquid is squeezed into the mold 32 to realize copper casting. In this process, the three-stage variable speed supercharging is realized by the second supercharger 56, so as to realize the action flow of the injection head 51 of slow → fast → supercharged die casting. Specifically, the copper liquid is firstly smoothly injected into the mold 32 by a relatively low pressure to reduce the generation of bubbles, and then the pressure is increased so that the copper liquid quickly fills all corners in the mold 32 and exhausts the gas, and finally the pressure is further increased to ensure that the copper liquid is tightly filled in the mold 32 and maintains a good appearance during the cooling process. At the same time, the position of the injection head 51 is detected by the first position sensor 54.

[0048] To achieve automatic demoulding of the rotor, see Figure 4-Figure 6, a demoulding mechanism 6 is provided on the side of the equipment frame 1. The demoulding mechanism 6 includes a working plate 61 fixedly provided inside the demoulding cavity 17. A fourth hydraulic rod 62 controlled by the hydraulic station 11 is vertically fixedly provided in the middle of the working plate 61, and a push rod 63 that can be inserted into the demoulding hole 34 is fixedly provided at the telescopic end of the fourth hydraulic rod 62. The fourth hydraulic rod 62 is controlled by the hydraulic station 11 to work, so that the push rod 63 enters the mold 32 through the demoulding groove 18 and the demoulding hole 34, and the rotor in the mold 32 is ejected from the mold 32 to achieve demoulding. A limit plate 64 is fixedly provided at the telescopic part of the fourth hydraulic rod 62, and a limit rod 65 that matches the limit plate 64 is fixedly provided at the top of the working plate 61. A detection groove 66 is provided at the telescopic end of the fourth hydraulic rod 62, and at least one second position sensor 67 that matches the detection groove 66 is vertically fixedly provided at the top of the working plate 61. The second position sensor 67 is a mature prior art and will not be described in detail here. During the upward movement of the push rod 63, the position of the telescopic part of the fourth hydraulic rod 62 is detected in real time by the second position sensor 67, providing position information for the demoulding of the rotor. During this process, the telescopic part of the fourth hydraulic rod 62 is ensured not to rotate by the limit rod 65 and the limit plate 64.

[0049] The method of using the high-pressure vertical die-casting machine for casting copper rotors of the present invention is as follows: First, when the mold 32 needs to be moved, the first hydraulic rod 12 is controlled by the hydraulic station 11 to move the movable shielding plate 10 upward. At this time, the movable shielding plates 10 at the opposite ends are simultaneously lowered under the action of the pull rope 14, thereby leaking the processing platform 2. It is convenient for the mold 32 to enter and exit, and for the workers to pour the molten copper into the melting cup. Then the second hydraulic rod 19 is controlled by the hydraulic station 11 to move the mold 32 and the delivery template 31 on the guide rail 16, thereby moving the mold 32 to the processing position and the demolding position. The hydraulic station 11 controls the operation of the third hydraulic rod 20 through the supercharger to move the top plate 43 downward and abut against the top of the mold 32, thereby ensuring the sealing of the inside of the mold 32 during the rotor die-casting and avoiding the occurrence of copper liquid splashing.

[0050] At the same time, the movable shielding plate 10 is moved downward by the first hydraulic rod 12, and the movable shielding plate 10 at the opposite end is moved upward by the pull rope 14, so that the processing area is shielded by the movable shielding plate 10 and the fixed shielding plate 9 to avoid damage to equipment and workers caused by copper liquid splashing during die-casting.

[0051] The nitrogen pump 55 is controlled to work by the hydraulic station 11. At this time, the nitrogen drives the gas push rod 53 after passing through the second supercharger 56, so that the injection head 51 moves upward in the melting cup 15, and the copper liquid is squeezed into the mold 32 to realize copper casting. In this process, the three-stage variable speed supercharging is realized by the second supercharger 56, so as to realize the action flow of the injection head 51 of slow → fast → supercharged die casting. Specifically, the copper liquid is firstly smoothly injected into the mold 32 by a relatively low pressure to reduce the generation of bubbles, and then the pressure is increased so that the copper liquid quickly fills all corners in the mold 32 and exhausts the gas, and finally the pressure is further increased to ensure that the copper liquid is tightly filled in the mold 32 and maintains a good appearance during the cooling process. At the same time, the position of the injection head 51 is detected by the first position sensor 54.

[0052] After die casting is completed, the hydraulic station 11 and the nitrogen pump 55 return the parts to their original positions. At this time, the hydraulic station 11 controls the fourth hydraulic rod 62 to work, so that the ejector 63 enters the mold 32 through the demolding groove 18 and the demolding hole 34, and ejects the rotor in the mold 32 from the mold 32 to achieve demolding. During the upward movement of the ejector 63, the position of the telescopic part of the fourth hydraulic rod 62 is detected in real time by the second position sensor 67, providing position information for the demolding of the rotor. In this process, the limit rod 65 and the limit plate 64 ensure that the telescopic part of the fourth hydraulic rod 62 does not rotate.

[0053] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by a person of ordinary skill in the field to which the invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0054] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A high pressure vertical die casting machine for copper rotors, characterized in that: The invention comprises an equipment frame (1), wherein a processing platform (2) capable of placing molten copper is arranged on the equipment frame (1), a lower mold (3) movable onto the processing platform (2) is arranged on the side of the equipment frame (1), a top mold (4) cooperating with the lower mold (3) is arranged on the equipment frame (1) above the processing platform (2) in a manner that can be raised and lowered, an injection module (5) for pressurizing the molten copper is arranged at the bottom end of the processing platform (2), and a demoulding mechanism (6) is arranged on the side of the equipment frame (1).

2. The high pressure vertical die casting machine for casting copper rotor according to claim 1, characterized in that: A die-sending frame (7) is fixedly provided on the side of the equipment frame (1), the lower die (3) is slidably provided on the die-sending frame (7), and a tool table (8) is fixedly provided at the end of the die-sending frame (7); A fixed shielding plate (9) is fixedly arranged on the equipment frame (1) perpendicular to the direction of the mold feeding frame (7), and two fixed shielding plates (9) are arranged and are respectively located at two ends of the processing platform (2); and a movable shielding plate (10) that can be raised and lowered on the equipment frame (1) is arranged on the equipment frame (1), and two movable shielding plates (10) are arranged and are respectively located at the other two ends of the processing platform (2); A hydraulic station (11) is arranged on the side of the equipment frame (1).

3. The high pressure vertical die casting machine for casting copper rotor according to claim 2, characterized in that: A first hydraulic rod (12) controlled by a hydraulic station (11) is vertically fixedly arranged at the top of the equipment frame (1); a telescopic end of the first hydraulic rod (12) is fixedly arranged on a movable shielding plate (10) on one side of the die-feeding frame (7); at least one group of rollers (13) and a pull rope (14) wound around the rollers (13) are rotatably arranged at the top of the equipment frame (1); and the two movable shielding plates (10) are connected via the pull rope (14).

4. The high pressure vertical die casting machine for casting copper rotor according to claim 2, characterized in that: The lower mold (3) comprises a delivery mold plate (31) slidably arranged on a delivery mold frame (7), a mold (32) is integrally fixedly arranged on the delivery mold plate (31), a plurality of through holes (33) through which molten copper can pass are provided at the bottom edge of the mold (32), and a demoulding hole (34) penetrating from top to bottom is provided in the middle of the bottom of the mold (32); A melting cup (15) is fixedly arranged on the processing platform (2), and guide rails (16) for moving a template (31) are arranged on the processing platform (2) on both sides of the melting cup (15).

5. The high pressure vertical die casting machine for casting copper rotor according to claim 4, characterized in that: A demoulding cavity (17) is provided inside the mold delivery frame (7); a demoulding groove (18) connected to the demoulding cavity (17) is provided on the mold delivery frame (7) below the demoulding hole (34) of the mold (32); a second hydraulic rod (19) controlled by a hydraulic station (11) is fixedly arranged horizontally at the bottom of the tool table (8); a telescopic end of the second hydraulic rod (19) passes through the demoulding cavity (17) and is fixedly arranged at the bottom of the mold delivery template (31).

6. The high pressure vertical die casting machine for casting copper rotor according to claim 4, characterized in that: The top mold (4) includes guide columns (41) vertically fixedly arranged at the four corners of the equipment frame (1), a liftable pressing plate (42) is horizontally arranged above the melting cup (15), each of the guide columns (41) penetrates the pressing plate (42) and is slidably arranged with the pressing plate (42), a top plate (43) located directly above the melting cup (15) is fixedly arranged at the bottom end of the pressing plate (42), and a third hydraulic rod (20) is vertically fixedly arranged at the top end of the equipment frame (1), and the telescopic end of the third hydraulic rod (20) is fixedly arranged with the top end of the pressing plate (42); A first booster (21) controlled by a hydraulic station (11) is fixedly arranged at the top end of the equipment frame (1), and the hydraulic station (11) drives the third hydraulic rod (20) to work via the booster.

7. The high pressure vertical die casting machine for casting copper rotor according to claim 4, characterized in that: The injection module (5) comprises an injection head (51) which is escalable in the middle of the melting cup (15); a mounting plate (52) is fixedly arranged at the bottom of the equipment frame (1); a gas push rod (53) is vertically fixedly arranged in the middle of the mounting plate (52); the telescopic end of the gas push rod (53) is fixedly arranged at the bottom of the injection head (51); a first position sensor (54) is fixedly arranged at the side of the mounting plate (52); and the movable end of the first position sensor (54) is fixedly arranged at the telescopic end of the gas push rod (53); A nitrogen pump (55) is fixedly arranged on the side of the equipment frame (1), and the nitrogen pump (55) drives the gas push rod (53) to work through a second booster (56) fixedly arranged on the gas delivery end of the nitrogen pump (55).

8. The high pressure vertical die casting machine for casting copper rotor according to claim 5, characterized in that: The demoulding mechanism (6) comprises a working plate (61) fixedly arranged inside the demoulding cavity (17), a fourth hydraulic rod (62) controlled by a hydraulic station (11) being vertically fixedly arranged in the middle of the working plate (61), a push rod (63) which can be inserted into the demoulding hole (34) being fixedly arranged at the telescopic end of the fourth hydraulic rod (62), a limit plate (64) being fixedly arranged at the telescopic part of the fourth hydraulic rod (62), and a limit rod (65) cooperating with the limit plate (64) being fixedly arranged at the top end of the working plate (61); The telescopic end of the fourth hydraulic rod (62) is provided with a detection slot (66), and the top end of the working plate (61) is vertically fixed with at least one second position sensor (67) that matches the detection slot (66).

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