Aluminum casting mold for rear end cover of motor

Abstract

The present invention discloses an aluminum casting mold for a rear end cover of a motor, which relates to the field of aluminum casting molds and includes a base, a molding box disposed above the base, the molding box being a cylindrical structure with an opening at the upper end thereof, the opening being sealed with a sealing cover, a processing chamber disposed inside the molding box, and a feed pipe for adding powdered material to the processing chamber disposed on the sealing cover. In the present invention, after powdered material is added to the processing chamber through the feed pipe, the powdered material is heated to form a molten material, which enters the molding chamber through a material through-hole, and a high-temperature resistant cylinder is activated to push the upper mold downward using the telescopic end of the high-temperature resistant cylinder to achieve compression of the molten material, thereby fully squeezing out air in the molten material and avoiding the formation of bubbles inside the rear end cover of the cast aluminum motor.

Description

Technical Field

[0001] The invention relates to the field of aluminum casting molds, in particular to an aluminum casting mold for a rear end cover of a motor. Background Art

[0002] The motor rear end cover is manufactured using an aluminum casting mold. However, existing aluminum casting molds typically inject molten material into a molding chamber, where it cools and forms the mold. This incomplete exhaust of gas from the molding chamber can easily lead to voids or bubbles in the inner structure of the motor rear end cover after molding, reducing the overall strength of the motor rear end cover. Therefore, it is necessary to propose an aluminum casting mold for the motor rear end cover to address this issue. Summary of the Invention

[0003] The purpose of the present invention is to provide an aluminum casting mold for the rear end cover of a motor, so as to solve the problem that the existing aluminum casting mold usually injects molten material into a molding chamber for cooling and molding, and the gas in the molding chamber is not discharged completely, which easily leads to the appearance of empty layers or bubbles in the inner layer structure of the rear end cover of the motor after molding, thereby reducing the overall strength of the rear end cover of the motor.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cast aluminum mold for the rear end cover of a motor, comprising a base, a molding box arranged above the base, the molding box being a cylindrical structure, the upper end of the molding box being open, the opening being sealed with a sealing cover, a processing chamber being arranged inside the molding box, a feeding pipe for adding powdered material to the processing chamber being arranged on the sealing cover, an annular heating chamber being arranged in the outer ring structure of the molding box, an electric heating plate being arranged in the annular heating chamber, the electric heating plate being distributed in a spiral shape, an input pipe being arranged on one side of the outer ring of the molding box, and an output pipe being arranged on the other side, the input pipe and the output pipe being connected to the interior of the annular heating chamber, a telescopic hole being arranged at the bottom of the molding box, a mold cylinder being slidably arranged in the telescopic hole, the mold cylinder being a cylindrical structure, an upper limit cylinder being fixedly arranged on the upper surface of the mold cylinder, and a cone being arranged inside the upper limit cylinder The cam is provided with a plurality of holes, and the holes are connected to the upper and lower surfaces of the mold cylinder, and the upper and lower surfaces of the mold cylinder are connected to each other through the holes.

[0005] Preferably, a first electric push rod is fixedly provided on the upper surface of the base, and a motor fixing plate is fixedly connected to the upper end of the first electric push rod, and a motor is fixedly installed on the upper surface of the motor fixing plate. A rotating shaft is provided at the upper end of the motor, and a clamping plate is fixedly connected to the end of the rotating shaft away from the motor. A cylindrical rod is fixedly welded to the middle of a side of the lower mold away from the upper mold, and a clamping groove is provided on a side of the cylindrical rod close to the rotating shaft, and the clamping groove corresponds to the clamping plate, the clamping groove has a cross-shaped groove structure, and the clamping plate has a rectangular plate structure.

[0006] Preferably, a mold column is fixedly provided on a side of the lower mold close to the upper mold, and the end of the mold column away from the lower mold is in contact with the side of the upper mold close to the lower mold. A reserved fixing hole corresponding to the mold column is provided on the rear end cover of the cast aluminum motor.

[0007] Preferably, the lower surface of the forming box is fixedly connected to a connecting bracket, and a spring telescopic rod is installed on the connecting bracket. The spring telescopic rod is vertically distributed, and the upper end of the spring telescopic rod is fixedly connected to the lower surface of the mold cylinder. There are multiple spring telescopic rods, and the multiple spring telescopic rods are distributed in a circular array around the axis of the mold cylinder.

[0008] Preferably, a bellows is provided above the base, the bellows is supported above the base by a bellows bracket, the bellows is provided on one side below the sealing cover, a servo motor is provided in the bellows, and a fan blade is fixedly connected to the rotating shaft of the servo motor.

[0009] Preferably, a triangular support frame is provided on the other side below the sealing cover, and the triangular support frame is fixedly mounted on the upper surface of the base by screws, and a third electric push rod is fixedly mounted on a side of the upper end of the triangular support frame close to the sealing cover, and the end of the third electric push rod away from the triangular support frame is fixedly connected to a connecting plate, and a rectangular frame is fixedly welded to the upper end of the connecting plate, and a second electric push rod is fixedly mounted on the lower surface of the end of the rectangular frame away from the connecting plate, the second electric push rod is vertically distributed, and a suction cup is mounted on the lower surface of the second electric push rod, and guide holes distributed laterally are fixedly welded on the triangular support frame, and the guide holes move simultaneously through both ends of the rectangular frame.

[0010] Preferably, a pressure relief hole is provided on the sealing cover, the pressure relief hole communicates with the inside and outside of the processing chamber, a pressure relief assembly is provided in the pressure relief hole, and the pressure relief assembly includes a pressure sensor, a solenoid valve and a controller.

[0011] Preferably, a limiting ring is fixedly welded to the inner ring of the upper end of the mold cylinder, and the upper mold includes two cylindrical structures, which are distributed up and down and arranged as a whole. The diameter of the upper cylindrical structure is larger than the diameter of the lower cylindrical structure, and the bottom surface of the upper cylindrical structure close to its outer ring position is attached to the upper surface of the limiting ring, and the inner ring of the limiting ring is movably attached to the outer ring of the lower cylindrical structure.

[0012] Preferably, the sealing cover is detachably connected to the upper opening of the forming box.

[0013] Preferably, the forming box is supported on the upper surface of the base by supporting legs.

[0014] Technical effects and advantages of the present invention:

[0015] 1. In the present invention, after the powdered material is added to the processing chamber through the feed pipe, the powdered material is heated to form a molten material, and the molten material enters the molding chamber through the material through-hole. The high-temperature resistant cylinder is started and the telescopic end of the high-temperature resistant cylinder is used to push the upper mold downward to achieve the pressing of the molten material, and the air in the molten material can be fully squeezed out. The squeezed and expelled air is reversely discharged into the interior of the processing chamber through the material through-hole. Then, the high-temperature resistant cylinder is used to continue to push the upper mold downward, and the position of the molding chamber is moved to the lower end of the sealing cover. The molten material in the molding chamber waits for cooling at the lower end of the sealing cover.

[0016] 2. The motor drives the card plate to rotate through the rotating shaft. Since the card plate is engaged in the card slot, the rotation of the card plate will also drive the cylindrical rod and the lower mold to rotate, so that the lower mold is rotated out from the inner position of the lower end of the mold cylinder. The lower mold is fixedly provided with a mold column on the side close to the upper mold. Since the mold column is engaged in the corresponding reserved fixing hole, the rear end cover of the cast aluminum motor after molding will be rotated out when the lower mold rotates to complete the demoulding operation. The setting of the mold column can make the surface of the rear end cover of the cast aluminum motor integrally formed with a reserved fixing hole, and the mold column can hold the rear end cover of the cast aluminum motor, so that the rear end cover of the cast aluminum motor can be demoulded smoothly, which is highly practical.

[0017] 3. The wind is heated by the electric heating plate inside the annular heating chamber, and the wind is transported along the spiral trajectory of the electric heating plate. The heat in the wind is fully in contact with the outer wall of the processing chamber to achieve heat exchange, so that the powdered material in the processing chamber is heated to form a molten material. In addition, the setting of the electric heating plate can increase the residence time of the wind in the annular heating chamber, so that the wind with heat can evenly contact the inner wall of the electric heating plate to achieve the purpose of heat exchange, with a high heat utilization rate. Finally, the wind is discharged from the output pipe and continues to enter the wind conveying mechanism for recycling, making full use of the discharged part of the hot wind.

[0018] 4. The present invention utilizes a method of first adding the powdered material into the processing chamber and then heating it, replacing the method of first heating the powdered material to a molten state and then transporting the molten material to the molding chamber through a pipeline in the prior art. This eliminates the process of transporting the molten material through the pipeline, also reduces the heat loss of the molten material, and avoids the phenomenon of condensation and blockage of the molten material in the transportation pipeline. After the powdered material is heated to a molten material, it can be directly discharged into the molding chamber through the top of the conical groove or the material through-hole for utilization. The molten material is then extruded by the upper mold, so that the molding chamber is filled with the molten material, the gas in the molten material is fully squeezed out, and the excess molten material can also flow into the processing chamber through the material through-hole for reuse, without waste. In addition, there is no bubble structure inside the rear end cover of the cast aluminum motor after molding, and the overall structural strength is high.

[0019] 5. After the powdered material is heated to a molten material, it has a relatively high temperature. The heating process will form a high-pressure environment in the processing chamber. Using the upper mold to press the molten material under the high-pressure environment is more conducive to the discharge of gas in the molten material and avoid the formation of bubbles inside the rear end cover of the cast aluminum motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the aluminum casting mold for the rear end cover of the motor from the first perspective of the present invention.

[0021] Figure 2 This is a schematic structural diagram of the aluminum casting mold for the rear end cover of the motor from a second perspective of the present invention.

[0022] Figure 3 This is a schematic structural diagram of the aluminum casting mold for the rear end cover of the motor according to the present invention from the third perspective.

[0023] Figure 4 This is a cross-sectional view from the first perspective of the aluminum casting mold for the rear end cover of the motor of the present invention.

[0024] Figure 5 This is a cross-sectional view from a second perspective of the aluminum casting mold for the rear end cover of the motor of the present invention.

[0025] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure in the middle.

[0026] Figure 7 This is a schematic structural diagram of the rear end cover of the cast aluminum motor of the present invention.

[0027] Figure: 1. Base; 2. Sealing cover; 3. Pressure relief hole; 4. Upper bracket; 5. High-temperature resistant cylinder; 6. Feed pipe; 7. Molding box; 8. Input pipe; 9. Output pipe; 10. Bellows; 11. Bellows bracket; 12. Rotating shaft; 13. Motor fixing plate; 14. Motor; 15. First electric push rod; 16. Suction cup; 17. Second electric push rod; 18. Connecting plate; 19. Rectangular frame; 20. Guide hole; 21. Third electric push rod; 22. Triangular support frame; 23. Cylinder Rod; 24. Connecting bracket; 25. Spring telescopic rod; 26. Lower mold; 27. Mold cylinder; 28. Pressure relief assembly; 29. ​​Processing chamber; 30. Electric heating plate; 31. Annular heating chamber; 32. Upper mold; 33. Conical groove; 34. Limiting ring; 35. Telescopic hole; 36. Upper limit cylinder; 37. Mold column; 38. Fan blade; 39. Servo motor; 40. Material through hole; 41. Card slot; 42. Card plate; 43. Cast aluminum motor rear end cover; 44. Reserved fixing hole. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The present invention aims to solve the problem that the existing aluminum casting mold usually injects molten material into the molding cavity for cooling and molding, and the gas in the molding cavity is not completely discharged, which easily leads to the formation of empty layers or bubbles in the inner layer structure of the rear end cover of the motor after molding, thereby reducing the overall strength of the rear end cover of the motor. Figure 1-Figure 7 The shown aluminum casting mold for the rear end cover of a motor includes a base 1, a molding box 7 is arranged above the base 1, the molding box 7 is a cylindrical structure, the upper end of the molding box 7 is open, and the opening is sealed with a sealing cover 2, a processing chamber 29 is arranged inside the molding box 7, and a feeding pipe 6 for adding powdered material to the processing chamber 29 is arranged on the sealing cover 2, an annular heating chamber 31 is arranged in the outer ring structure of the molding box 7, an electric heating plate 30 is arranged in the annular heating chamber 31, and the electric heating plate 30 is distributed in a spiral shape, an input pipe 8 is arranged on one side of the outer ring of the molding box 7, and an output pipe 9 is arranged on the other side, the input pipe 8 and the output pipe 9 are both connected to the interior of the annular heating chamber 31, a telescopic hole 35 is provided at the bottom of the molding box 7, a mold cylinder 27 is slidably arranged in the telescopic hole 35, the mold cylinder 27 is a cylindrical structure, an upper limit cylinder 36 is fixedly provided on the upper surface of the mold cylinder 27, a conical groove 33 is provided inside the upper limit cylinder 36, and the outer ring of the upper limit cylinder 36 The diameter is larger than the outer ring diameter of the mold barrel 27. The lower end of the mold barrel 27 is connected to the lower mold 26 through a threaded fit. The upper end of the mold barrel 27 is slidably provided with an upper mold 32. A molding chamber for molding the rear end cover 43 of the cast aluminum motor is formed between the lower surface of the upper mold 32 and the upper surface of the lower mold 26. The upper surface of the sealing cover 2 is fixedly installed with an upper bracket 4, and a high-temperature resistant cylinder 5 is fixedly installed on the upper bracket 4. The high-temperature resistant cylinder 5 is vertically arranged. The telescopic end of the lower end of the high-temperature resistant cylinder 5 can move through the lower surface of the sealing cover 2 and extend into the interior of the processing chamber 29. One end of the telescopic end of the lower end of the high-temperature resistant cylinder 5 extending into the interior of the processing chamber 29 is fixedly connected to the middle of the upper surface of the upper mold 32. A material through hole 40 is provided on the mold barrel 27. The material through hole 40 simultaneously penetrates the inner and outer rings of the mold barrel 27, and the material through hole 40 is connected between the processing chamber 29 and the molding chamber. There are multiple material through holes 40, and the multiple material through holes 40 are distributed around a week of the molding chamber.

[0030] In the present invention, after the powdered material is added to the processing chamber 29 through the feed pipe 6, the powdered material is heated to form a molten material, and the molten material enters the molding chamber through the material through-hole 40. The high-temperature resistant cylinder 5 is started and the telescopic end of the high-temperature resistant cylinder 5 is used to push the upper mold 32 down to achieve the pressing of the molten material. The air in the molten material can be fully squeezed out and the expelled air is reversely discharged to the inside of the processing chamber 29 through the material through-hole 40. Then, the high-temperature resistant cylinder 5 is used to continue to push the upper mold 32 down, and a limiting ring 34 is fixedly welded at the inner ring of the upper end of the mold barrel 27. The upper mold 32 includes two cylindrical structures. The upper mold 32 is a molded part of a mold body, and the lower mold body 32 is a molded part of a mold body, and the upper ...

[0031] It should be noted that a mechanical seal is used between the outer ring of the mold barrel 27 and the inner wall of the telescopic hole 35 to prevent leakage of the molten material in the processing chamber 29. For example, a rigid sealing ring can be used without affecting the up and down movement of the mold barrel 27.

[0032] A bellows 10 is provided above the base 1. The bellows 10 is supported above the base 1 by a bellows bracket 11. The bellows 10 is provided on one side below the sealing cover 2. A servo motor 39 is provided in the bellows 10. A fan blade 38 is fixedly connected to the rotating shaft of the servo motor 39. When the servo motor 39 is started, the fan blade 38 can be driven to rotate, thereby generating wind force. The wind force blows on the outer ring of the mold cylinder 27, thereby blowing away the heat of the outer ring of the mold cylinder 27, accelerating the cooling of the molten material in the molding chamber, and forming the rear end cover 43 of the cast aluminum motor when the molten material is completely cooled.

[0033] After the rear end cover 43 of the cast aluminum motor is formed, the rear end cover 43 of the cast aluminum motor is demoulded. The upper surface of the base 1 is fixedly provided with a first electric push rod 15, and the upper end of the first electric push rod 15 is fixedly connected to the motor fixing plate 13. The upper surface of the motor fixing plate 13 is fixedly installed with a motor 14. The upper end of the motor 14 is provided with a rotating shaft 12, and the end of the rotating shaft 12 away from the motor 14 is fixedly connected to the clamping plate 42. The middle part of the side of the lower mold 26 away from the upper mold 32 is fixedly welded with a cylindrical rod 23, and the side of the cylindrical rod 23 close to the rotating shaft 12 is provided with a clamping groove 41. The clamping groove 41 and the clamping plate 42 are fixedly connected. Correspondingly, the card slot 41 has a cross-shaped slot structure, and the card plate 42 has a rectangular plate structure. The first electric push rod 15 is used to push the motor fixing plate 13 and the motor 14 to rise, so that the rotating shaft 12 at the upper end of the motor 14 rises synchronously, and the card plate 42 at the upper end of the rotating shaft 12 can be inserted into the corresponding card slot 41. At this time, the motor 14 is started, and the motor 14 drives the card plate 42 to rotate through the rotating shaft 12. Since the card plate 42 is engaged in the card slot 41, the rotation of the card plate 42 will also drive the cylindrical rod 23 and the lower mold 26 to rotate, thereby causing the lower mold 26 to rotate out from the internal position of the lower end of the mold cylinder 27.

[0034] A mold column 37 is fixedly provided on one side of the lower mold 26 close to the upper mold 32, and the end of the mold column 37 away from the lower mold 26 is in contact with the side of the upper mold 32 close to the lower mold 26, and a reserved fixing hole 44 corresponding to the mold column 37 is provided on the rear end cover 43 of the cast aluminum motor; because the mold column 37 is engaged in the corresponding reserved fixing hole 44, the rear end cover 43 of the cast aluminum motor after molding will also be rotated out when the lower mold 26 rotates, completing the demoulding operation, and the setting of the mold column 37 can make the surface of the rear end cover 43 of the cast aluminum motor integrally formed with the reserved fixing hole 44, and the mold column 37 can serve the purpose of grasping the rear end cover 43 of the cast aluminum motor, so that the rear end cover 43 of the cast aluminum motor can be smoothly demoulded, which is highly practical.

[0035] When the rear end cover 43 of the cast aluminum motor is rotated and taken out from the mold cylinder 27, the first electric push rod 15 is continued to be used to control the rear end cover 43 of the cast aluminum motor to drop to a suitable height. A triangular support frame 22 is provided on the other side below the sealing cover 2. The triangular support frame 22 is fixedly mounted on the upper surface of the base 1 by screws. A third electric push rod 21 is fixedly mounted on the side of the upper end of the triangular support frame 2 close to the sealing cover 2. The end of the third electric push rod 21 away from the triangular support frame 22 is fixedly connected to a connecting plate 18. A rectangular frame 19 is fixedly welded to the upper end of the connecting plate 18. A second electric push rod 17 is fixedly mounted on the lower surface of the end of the rectangular frame 19 away from the connecting plate 18. The second electric push rod 17 is vertically distributed. A suction cup 16 is installed on the lower surface of the triangular support frame 22, and laterally distributed guide holes 20 are fixedly welded on the triangular support frame 22, and the guide holes 20 are movable through the two ends of the rectangular frame 19 at the same time; when working, the third electric push rod 21 pushes the connecting plate 18 and the rectangular frame 19 to move, and when the rectangular frame 19 moves, it drives the second electric push rod 17 and the suction cup 16 to move until the suction cup 16 moves to the top of the rear end cover 43 of the cast aluminum motor, and then starts the second electric push rod 17 to descend and fit the suction cup 16 to the upper surface of the rear end cover 43 of the cast aluminum motor, and uses the suction cup 16 to absorb the rear end cover 43 of the cast aluminum motor, and then operates the second electric push rod 17 and the third electric push rod 21 to return in sequence, thereby completing the purpose of removing the rear end cover 43 of the cast aluminum motor from above the lower mold 26.

[0036] It should be noted that when the rectangular frame 19 moves, it slides on the guide hole 20. The guide hole 20 serves to guide the rectangular frame 19, so that the movement of the rectangular frame 19 is more stable. The suction cup 16 is provided with a corresponding negative pressure fan and other devices for supplying negative pressure suction to the suction cup 16. This is an existing common technology and will not be elaborated here.

[0037] When the rear end cover 43 of the cast aluminum motor is taken out from above the lower mold 26, the high temperature resistant cylinder 5 is operated to return, so that the upper mold 32 moves to the inside of the processing chamber 29. A connecting bracket 24 is fixedly connected to the lower surface of the molding box 7. A spring telescopic rod 25 is installed on the connecting bracket 24. The spring telescopic rod 25 is distributed vertically. The upper end of the spring telescopic rod 25 is fixedly connected to the lower surface of the mold barrel 27. There are multiple spring telescopic rods 25, and the multiple spring telescopic rods 25 are distributed in a circular array around the axis of the mold barrel 27. When the upper mold 32 returns, the elastic recovery effect of the spring telescopic rod 25 causes the mold barrel 27 to also reset. At this time, the molten material in the processing chamber 29 can enter the molding chamber through the material through hole 40 again for the next processing.

[0038] It should also be noted that the powdered material is adjusted according to the material required for molding the rear end cover 43 of the cast aluminum motor in the molding chamber. For example, aluminum powder material can be used. In actual use, the amount of molten material in the processing chamber 29 is added according to actual needs. Since a conical groove 33 is provided on the upper limit cylinder 36, when the upper mold 32 moves upward, the molten material can also enter the molding chamber from the conical groove 33.

[0039] The end of the feed pipe 6 is connected to a storage tank for storing powdered materials and a material pump. The material pump transports the powdered material in the storage tank into the processing chamber 29 through the feed pipe 6. It is a common material conveying mechanism and will not be described in detail here. A pressure relief hole 3 is provided on the sealing cover 2. The pressure relief hole 3 connects the inside and outside of the processing chamber 29. A pressure relief assembly 28 is provided in the pressure relief hole 3. The pressure relief assembly 28 includes a pressure sensor, a solenoid valve and a controller. The pressure sensor, the solenoid valve and the controller are all common mechanisms in the prior art. Only a brief description is given here, which is only used to avoid the processing chamber A pressure relief mechanism for excessive pressure in chamber 29, such as: the output end of the controller is connected to the input end of the solenoid valve, the input end of the controller is connected to the output end of the pressure sensor, the pressure sensor monitors the pressure at the position of the pressure relief hole 3 above the processing chamber 29, if the pressure in the processing chamber 29 is too high, the pressure at the pressure relief hole 3 will rise synchronously, the pressure sensor monitors the pressure data, if the pressure data exceeds the set threshold, the controller controls the solenoid valve to open, so that gas is discharged from the pressure relief hole 3, to achieve pressure relief in the processing chamber 29, and avoid safety accidents caused by excessive pressure in the processing chamber 29.

[0040] In the present invention, the input pipe 8 and the output pipe 9 are respectively connected to the output end and the input end of the wind conveying mechanism, and the wind conveying mechanism can use a fan, etc. The wind conveying mechanism conveys the wind through the input pipe 8 to the inside of the annular heating chamber 31, and the wind is heated by the electric heating plate 30 inside the annular heating chamber 31. The wind is conveyed along the spiral trajectory of the electric heating plate 30, and the heat in the wind is fully in contact with the outer wall of the processing chamber 29 to realize heat exchange, so that the powdered material in the processing chamber 29 is heated to form a molten material. Moreover, by setting the electric heating plate 30, the residence time of the wind in the annular heating chamber 31 can be increased, so that the wind with heat can fully contact the inner wall of the electric heating plate 30 evenly, so as to realize the purpose of heat exchange, and the heat utilization rate is high. Finally, the wind is discharged from the output pipe 9 and continues to enter the wind conveying mechanism for recycling, so as to make full use of the discharged part of the wind with heat.

[0041] It should be noted that the output pipe 9 is arranged at the upper end of the outer ring of the molding box 7, and the input pipe 8 is arranged at the lower end of the outer ring of the molding box 7, so that the wind can fully flow through the outer ring of the processing chamber 29 through the guidance of the electric heating plate 30; the present invention utilizes a method of first adding the powdered material into the processing chamber 29 and then heating it, replacing the method of first heating the powdered material to a molten state and then transporting the molten material to the molding chamber through a pipeline in the prior art, eliminating the process of transporting the molten material through the pipeline, and also reducing the heat loss of the molten material, and avoiding the phenomenon of condensation and blockage of the molten material in the transport pipeline; after the powdered material is heated to a molten material, it can be directly discharged into the molding chamber through the conical groove 33 or the material through hole 40 for use, and then the upper mold 32 is used to extrude the molten material, so that the molding chamber is filled with molten material, the gas in the molten material is fully squeezed out, and the excess molten material can also flow through the material through hole 40 to the processing chamber 29 for reuse, without waste, and there is no bubble structure inside the rear end cover 43 of the cast aluminum motor after molding, and the overall structural strength is high.

[0042] Furthermore, after the powdered material is heated to a molten material, a relatively high temperature is present. The heating process will form a high-pressure environment in the processing chamber 29. The molten material is pressed using the upper mold 32 under the high-pressure environment, which is more conducive to the discharge of gas in the molten material and avoids the formation of bubbles inside the rear end cover 43 of the cast aluminum motor.

[0043] In actual use, the sealing cover 2 is detachably connected to the opening above the molding box 7, which is convenient for regular disassembly and maintenance. The sealing cover 2 can be stably sealed at the opening above the molding box 7 by means of snaps, magnets, and motor drive, and can maintain strong stability. The specific fixing structure used will not be described here, and it is an existing commonly used sealing method.

[0044] Among them, the forming box 7 is supported on the upper surface of the base 1 by support legs. The support legs are not shown in the figure. They are a common existing support structure. The position of the support legs does not affect the removal and placement of the rear end cover 43 of the cast aluminum motor. Multiple support legs can be optionally set according to actual needs.

Claims

1. A motor rear end cover aluminum casting mold, comprising a base (1), characterized in that: A forming box (7) is provided above the base (1), and the forming box (7) is in a cylindrical structure. The upper end of the forming box (7) is open, and a sealing cover (2) is sealed at the opening. A processing chamber (29) is provided inside the forming box (7), and a feeding pipe (6) for adding powdered materials into the processing chamber (29) is provided on the sealing cover (2). An annular heating chamber (31) is provided in the outer ring structure of the forming box (7), and an electric heating plate (30) is provided in the annular heating chamber (31). The electric heating plate (30) is distributed in a spiral shape. An input pipe (8) is provided on one side of the outer ring of the molding box (7), and an output pipe (9) is provided on the other side. The input pipe (8) and the output pipe (9) are both connected to the interior of the annular heating chamber (31). A telescopic hole (35) is provided at the bottom of the molding box (7). A mold cylinder (27) is slidably provided in the telescopic hole (35). The mold cylinder (27) is a cylindrical structure. An upper limit cylinder (36) is fixedly provided on the upper surface of the mold cylinder (27). A conical groove (33) is provided inside the upper limit cylinder (36). The outer ring diameter of the upper limit cylinder (36) is The outer diameter of the mold cylinder (27) is larger than that of the mold cylinder (27). The lower end of the mold cylinder (27) is connected to the lower mold (26) by threaded connection. The upper end of the mold cylinder (27) is slidably provided with an upper mold (32). A molding chamber for molding the rear end cover (43) of the cast aluminum motor is formed between the lower surface of the upper mold (32) and the upper surface of the lower mold (26). The upper surface of the sealing cover (2) is fixedly installed with an upper bracket (4). A high-temperature resistant cylinder (5) is fixedly installed on the upper bracket (4). The high-temperature resistant cylinder (5) is vertically arranged, and the extension of the lower end of the high-temperature resistant cylinder (5) is fixedly installed on the upper bracket (4). The retracted end movably passes through the lower surface of the sealing cover (2) and extends into the interior of the processing chamber (29); one end of the lower telescopic end of the high-temperature resistant cylinder (5) extending into the interior of the processing chamber (29) is fixedly connected to the middle of the upper surface of the upper mold (32); a material through hole (40) is provided on the mold barrel (27); the material through hole (40) simultaneously penetrates the inner and outer circles of the mold barrel (27), and the material through hole (40) is connected between the processing chamber (29) and the molding chamber; a plurality of material through holes (40) are provided, and the plurality of material through holes (40) are distributed around a circle of the molding chamber.

2. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: A first electric push rod (15) is fixedly provided on the upper surface of the base (1), the upper end of the first electric push rod (15) is fixedly connected to a motor fixing plate (13), a motor (14) is fixedly installed on the upper surface of the motor fixing plate (13), a rotating shaft (12) is provided on the upper end of the motor (14), an end of the rotating shaft (12) away from the motor (14) is fixedly connected to a clamping plate (42), a cylindrical rod (23) is fixedly welded to the middle of a side of the lower mold (26) away from the upper mold (32), a clamping groove (41) is provided on a side of the cylindrical rod (23) close to the rotating shaft (12), the clamping groove (41) corresponds to the clamping plate (42), the clamping groove (41) is a cross-shaped groove structure, and the clamping plate (42) is a rectangular plate structure.

3. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: A mold column (37) is fixedly provided on a side of the lower mold (26) close to the upper mold (32), and an end of the mold column (37) away from the lower mold (26) is in contact with a side of the upper mold (32) close to the lower mold (26), and a reserved fixing hole (44) corresponding to the mold column (37) is provided on the rear end cover (43) of the cast aluminum motor.

4. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: The lower surface of the molding box (7) is fixedly connected to a connecting bracket (24), and a spring telescopic rod (25) is installed on the connecting bracket (24). The spring telescopic rod (25) is vertically distributed, and the upper end of the spring telescopic rod (25) is fixedly connected to the lower surface of the mold cylinder (27). The spring telescopic rod (25) is provided in plurality, and the plurality of spring telescopic rods (25) are distributed in a circular array around the axis of the mold cylinder (27).

5. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: A bellows (10) is provided above the base (1), and the bellows (10) is supported above the base (1) by a bellows bracket (11). The bellows (10) is provided on one side below the sealing cover (2). A servo motor (39) is provided in the bellows (10), and a fan blade (38) is fixedly connected to the rotating shaft of the servo motor (39).

6. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: A triangular support frame (22) is provided on the other side below the sealing cover (2), and the triangular support frame (22) is fixedly mounted on the upper surface of the base (1) by screws. A third electric push rod (21) is fixedly mounted on the side of the upper end of the triangular support frame (22) close to the sealing cover (2), and the end of the third electric push rod (21) away from the triangular support frame (22) is fixedly connected to a connecting plate (18), and a rectangular frame (19) is fixedly welded to the upper end of the connecting plate (18), and a second electric push rod (17) is fixedly mounted on the lower surface of the end of the rectangular frame (19) away from the connecting plate (18), and the second electric push rod (17) is vertically distributed. A suction cup (16) is mounted on the lower surface of the second electric push rod (17), and a transversely distributed guide hole (20) is fixedly welded on the triangular support frame (22), and the guide hole (20) moves through both ends of the rectangular frame (19) at the same time.

7. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: The sealing cover (2) is provided with a pressure relief hole (3), the pressure relief hole (3) is connected to the inside and outside of the processing chamber (29), and a pressure relief component (28) is provided in the pressure relief hole (3), and the pressure relief component (28) includes a pressure sensor, a solenoid valve and a controller.

8. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: A limiting ring (34) is fixedly welded to the inner ring of the upper end of the mold cylinder (27), and the upper mold (32) includes two cylindrical structures, which are distributed up and down and arranged as a whole. The diameter of the upper cylindrical structure is larger than the diameter of the lower cylindrical structure. The bottom surface of the upper cylindrical structure close to its outer ring position is attached to the upper surface of the limiting ring (34), and the inner ring of the limiting ring (34) is movably attached to the outer ring of the lower cylindrical structure.

9. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: The sealing cover (2) is detachably connected to the upper opening of the molding box (7).

10. The aluminum casting mold for the motor rear end cover according to claim 1, characterized in that: The molding box (7) is supported on the upper surface of the base (1) via support legs.

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