A low-density high-speed core forming die for a cast aluminum rotor of a servo motor

Abstract

This invention relates to the field of servo motor cast aluminum rotor production technology, specifically disclosing a low-density, high-speed iron core forming mold for servo motor cast aluminum rotors. This mold addresses the problems of existing cast aluminum rotor iron core forming molds, such as reliance on manual operation throughout the entire process, low production efficiency, and significant safety hazards associated with high-temperature operations. Specifically, it includes a mold assembly composed of extrusion parts, moving parts, mold parts, injection parts, loading parts, unloading parts, and gripper parts. This mold assembly can automatically complete the entire production process, including loading, unloading, mold closing, demolding, and casting, eliminating the need for manual operation throughout the process. This significantly improves the overall production efficiency of cast aluminum rotors and fully adapts to the needs of large-scale, continuous production. Furthermore, by effectively reducing manual intervention in the production process, it minimizes direct contact between operators and the mold assembly, thus avoiding various safety hazards such as high-temperature burns from the source.

Description

Technical Field

[0001] This invention relates to the field of servo motor cast aluminum rotor manufacturing technology, and in particular to a low-density, high-speed iron core forming mold for servo motor cast aluminum rotors. Background Technology

[0002] As a core component of high-precision transmission equipment, the performance of the cast aluminum rotor in a servo motor directly determines the motor's operating accuracy, speed, and energy efficiency. With the development of servo motors towards higher speeds and lighter weights, the cast aluminum rotor core faces dual requirements: low density reduces rotor inertia and improves motor response speed; high speed demands sufficient structural strength and dimensional accuracy from the core to prevent deformation and cracking due to centrifugal force during high-speed rotation. Currently, in the forming and processing of servo motor cast aluminum rotor cores, existing molds generally rely on manual labor for each core processing step. This excessive level of manual intervention has become a key bottleneck restricting production development.

[0003] Existing aluminum rotor core forming molds lack automated integrated design, requiring manual operation at each processing stage. This presents several prominent problems, making it difficult to meet the demands of large-scale, high-precision production: First, core processes such as mold closing, casting, and demolding all rely on manual operation. The speed of manual operation is limited, and issues such as inconsistent operating rhythm and non-standard operation are prone to occur, significantly reducing production efficiency and making it difficult to adapt to the continuous production needs of large batches of cores. Second, during the aluminum casting process, the molten aluminum is in a high-temperature molten state. When manually performing operations such as casting, demolding, and mold cleaning, there is a high risk of molten aluminum splashing and contact with the high-temperature mold, posing serious safety hazards of burns and threatening the personal safety of operators. Summary of the Invention

[0004] The purpose of this invention is to provide a low-density, high-speed iron core forming mold for cast aluminum rotors of servo motors, in order to solve the problems mentioned above.

[0005] The objective of this invention can be achieved through the following technical solution: a low-density, high-speed iron core forming mold for a servo motor cast aluminum rotor, comprising: A mold assembly consisting of extrusion parts, moving parts, mold parts, injection parts, loading parts, unloading parts, and gripper parts; The extrusion component includes a platform, a first U-shaped frame fixed inside the platform, a first telescopic cylinder mounted on the top of the first U-shaped frame and whose telescopic end extends through the top of the first U-shaped frame and into the interior of the first U-shaped frame, and an extrusion head mounted on the telescopic end of the first telescopic cylinder. The movable component includes a enclosure fixed to the top of the platform and arranged around the perimeter of the first U-shaped frame, two guide rails symmetrically arranged inside the enclosure, and a mold base assembled between the two guide rails and sliding along the length of the two guide rails, wherein the mold base is used to place the mold component. The mold component includes a lower mold, an axis disposed on the top of the lower mold and located at the center of the lower mold, a positioning sleeve assembled on the top of the lower mold, a middle ring assembled inside the positioning sleeve, a vacuum sleeve assembled outside the middle ring, an upper mold abutting against the inside of the vacuum sleeve, and an extrusion part assembled between the extrusion head and the upper mold. The injection component includes a movable seat disposed inside the first U-shaped frame, and a second telescopic cylinder assembled inside the first U-shaped frame and whose telescopic end is connected to the top of the movable seat, wherein when the second telescopic cylinder is working, the movable seat moves up and down inside the first U-shaped frame; The feeding component includes a first conveyor frame fixed to the top of the platform, and multiple sets of first movable discs arranged inside the first conveyor frame and moving along the length of the first conveyor frame. The unloading component includes a second conveyor frame fixed to the top of the platform, and multiple sets of second movable discs arranged inside the second conveyor frame and moving along the length of the second conveyor frame; The gripper assembly includes a second U-shaped frame fixed to the top of the platform, a sliding groove formed on the top of the second U-shaped frame, and a third telescopic cylinder assembled inside the sliding groove and moving along the length of the sliding groove, wherein the telescopic end of the third telescopic cylinder is used for the gripper to be installed.

[0006] Preferably, the movable component further includes an assembly groove formed on the top of the mold base, and a first injection hole formed at the center of the assembly groove, which respectively penetrates the bottom of the mold base and the bottom surface of the assembly groove.

[0007] Preferably, the mold component further includes a hole formed at the top of the vacuum sleeve and communicating with the interior of the vacuum sleeve.

[0008] Preferably, the bore is used in conjunction with an external vacuum device to evacuate the center ring.

[0009] Preferably, the injection component further includes a mounting plate, a first mounting hole on the top of the mounting plate, an injection tube fitted inside the first mounting hole, a second injection hole on the top of the injection tube corresponding to the position of the first injection hole, an injection cylinder fitted at the bottom of the injection tube and communicating with the injection tube, an injection head fitted inside the injection cylinder and used to drive the molten aluminum inside the injection cylinder, and a mounting base slidably fitted on the top of the movable seat for use in installing the injection cylinder.

[0010] Preferably, it also includes a demolding component, which consists of two demolding units, the two demolding units being symmetrically arranged about the top of the mounting plate about the injection tube; The demolding unit includes a second mounting hole opened on the top of the mounting plate and an ejector pin vertically movable inside the second mounting hole.

[0011] Preferably, the demolding unit further includes an outer peripheral plate fixed to the outside of the ejector pin, and a fourth telescopic cylinder assembled at the bottom of the mounting plate and whose telescopic end is connected to the top of the outer peripheral plate.

[0012] Preferably, the mold component further includes a first threaded hole opened at the bottom of the lower mold and passing through the bottom and top of the lower mold respectively, a second threaded hole opened at the bottom of the shaft and corresponding to the position of the first threaded hole, and a fixing bolt threaded into the first threaded hole and the second threaded hole.

[0013] Preferably, the mold component further includes multiple sets of first through holes arranged in a ring at the bottom of the lower mold and passing through the bottom and top of the lower mold respectively, and multiple sets of second through holes arranged in a ring at the bottom of the mold base and passing through the bottom of the mold base and the bottom surface of the assembly groove respectively.

[0014] Preferably, the positions of the plurality of first perforations and the plurality of second perforations correspond one-to-one.

[0015] The beneficial effects of this invention are: First, the mold assembly can automatically complete the entire production process, including feeding, unloading, mold closing, and casting, without relying on manual operation throughout the process. This significantly improves the overall production efficiency of the cast aluminum rotor and can fully meet the needs of large-scale, continuous production. At the same time, by effectively reducing manual intervention in the production process, the direct contact between operators and the mold assembly is reduced, avoiding various safety hazards such as high-temperature burns from the source, and effectively ensuring the personal safety and operational stability of on-site operators.

[0016] Secondly, the demolding component can automatically complete the demolding process of the cast aluminum rotor without the need for manual operation. This not only effectively improves the overall processing efficiency of the cast aluminum rotor, simplifies the production process, and adapts to the needs of continuous processing, but also greatly reduces the opportunity for operators to come into contact with high-temperature workpieces and mold structures, fundamentally avoiding the safety risk of operators being burned by high-temperature components. Attached Figure Description The invention will now be further described with reference to the accompanying drawings; Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 In this invention Figure 1 A magnified structural diagram of A in the middle; Figure 3 This is a schematic diagram of the cross-sectional structure of the mold base in this invention; Figure 4 This is a schematic diagram of the demolding component structure in this invention; Figure 5 This is a schematic diagram of the movable seat structure in this invention; Figure 6 This is a schematic diagram of the mold component structure in this invention. Legend: 100. Mold assembly; 101. Platform; 102. Enclosure; 103. First U-shaped frame; 104. First telescopic cylinder; 105. Extrusion head; 106. Guide rail; 107. Mold base; 108. Assembly slot; 109. First injection hole; 110. Moving base; 111. Second telescopic cylinder; 112. First conveyor frame; 113. First moving plate; 114. Second conveyor frame; 115. Second moving plate; 116. Second U-shaped frame; 11 7. Sliding groove; 118. Third telescopic cylinder; 119. Mounting base; 120. Injection cylinder; 121. Mounting plate; 122. Second mounting hole; 123. Ejector pin; 124. Outer plate; 125. Fourth telescopic cylinder; 126. Injection tube; 127. Lower mold; 128. Shaft; 129. First threaded hole; 130. Fixing bolt; 131. Positioning sleeve; 132. Middle ring; 133. Vacuum sleeve; 134. Extrusion section; 135. Upper mold. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The application background of this invention is that the core processes of mold making, such as mold closing, casting, and demolding, are all completed manually. Manual operation has limited speed and is prone to problems such as inconsistent operating rhythm and non-standard operation, which not only significantly reduces production efficiency but also makes it difficult to meet the continuous production needs of large batches of iron cores. During the aluminum casting process, the molten aluminum is in a high-temperature molten state. When manually performing operations such as casting, demolding, and mold cleaning, there is a high risk of molten aluminum splashing and contact with the high-temperature mold, posing serious safety hazards of burns and threatening the personal safety of operators. The technical solution of this invention addresses the problems of existing aluminum rotor iron core forming molds, which rely entirely on manual operation, have low production efficiency, and pose significant safety hazards due to high-temperature operations. Please see Figures 1-6As shown, this embodiment is a low-density, high-speed iron core forming mold for a servo motor cast aluminum rotor, including: a mold assembly 100 composed of an extrusion part, a moving part, a mold part, an injection part, a feeding part, a discharging part, and a gripper part; the extrusion part includes a platform 101, a first U-shaped frame 103 fixed inside the platform 101, a first telescopic cylinder 104 mounted on the top of the first U-shaped frame 103 and whose telescopic end movably passes through the top of the first U-shaped frame 103 and extends into the interior of the first U-shaped frame 103, and an extrusion head 105 mounted on the telescopic end of the first telescopic cylinder 104; the moving part includes a enclosure 102 fixed on the top of the platform 101 and arranged around the first U-shaped frame 103, two guide rails 106 symmetrically arranged inside the enclosure 102, and a mold seat 107 mounted between the two guide rails 106 and sliding along the length direction of the two guide rails 106, wherein the mold seat 107 is used to place the mold part; The movable component also includes an assembly groove 108 formed on the top of the mold base 107, and a first injection hole 109 formed at the center of the assembly groove 108 and passing through the bottom of the mold base 107 and the inner bottom surface of the assembly groove 108; the mold component includes a lower mold 127, a shaft 128 set on the top of the lower mold 127 and located at the center of the lower mold 127, a positioning sleeve 131 assembled on the top of the lower mold 127, a middle ring 132 assembled inside the positioning sleeve 131, a vacuum sleeve 133 assembled outside the middle ring 132, an upper mold 135 abutting against the inside of the vacuum sleeve 133, and an extrusion part 134 assembled between the extrusion head 105 and the upper mold 135; the mold component It also includes a first threaded hole 129 opened at the bottom of the lower mold 127 and passing through the bottom and top of the lower mold 127 respectively; a second threaded hole opened at the bottom of the shaft 128 and corresponding to the position of the first threaded hole 129; and a fixing bolt 130 threadedly assembled inside the first threaded hole 129 and the second threaded hole. The mold component also includes multiple sets of first through holes arranged in a ring at the bottom of the lower mold 127 and passing through the bottom and top of the lower mold 127 respectively; and multiple sets of second through holes arranged in a ring at the bottom of the mold base 107 and passing through the bottom of the mold base 107 and the bottom surface of the assembly groove 108 respectively. The positions of the multiple first through holes and the multiple second through holes correspond one-to-one. The injection component includes a movable seat 110 disposed inside the first U-shaped frame 103, and a second telescopic cylinder 111 mounted inside the first U-shaped frame 103 and connected to the top of the movable seat 110 at its telescopic end. When the second telescopic cylinder 111 is working, the movable seat 110 moves up and down inside the first U-shaped frame 103. The injection component also includes a mounting plate 121, a first mounting hole opened at the top of the mounting plate 121, an injection tube 126 mounted inside the first mounting hole, a second injection hole opened at the top of the injection tube 126 and corresponding to the position of the first injection hole 109, an injection cylinder 120 mounted at the bottom of the injection tube 126 and communicating with the injection tube 126, and an injection head mounted inside the injection cylinder 120 for driving the molten aluminum inside the injection cylinder 120, which is slidably mounted on the top of the movable seat 110. The platform 101 includes a mounting base 119 for mounting the injection cylinder 120; a loading component including a first conveyor frame 112 fixed to the top of the platform 101, and multiple sets of first moving discs 113 arranged inside the first conveyor frame 112 and moving along the length of the first conveyor frame 112; a unloading component including a second conveyor frame 114 fixed to the top of the platform 101, and multiple sets of second moving discs 115 arranged inside the second conveyor frame 114 and moving along the length of the second conveyor frame 114; and a gripper component including a second U-shaped frame 116 fixed to the top of the platform 101, a sliding groove 117 opened on the top of the second U-shaped frame 116, and a third telescopic cylinder 118 assembled inside the sliding groove 117 and moving along the length of the sliding groove 117, wherein the telescopic end of the third telescopic cylinder 118 is used for mounting the gripper.

[0019] Specifically, the mold assembly 100 can automatically complete the entire production process, including feeding, unloading, mold closing, and casting, without relying on manual operation throughout the process. This significantly improves the overall production efficiency of the cast aluminum rotor and can fully meet the needs of large-scale, continuous production. At the same time, by effectively reducing manual intervention in the production process, it reduces the direct contact between operators and the mold assembly 100, thereby avoiding various safety hazards such as high-temperature burns from the source and effectively ensuring the personal safety and operational stability of on-site operators.

[0020] Description of mold assembly 100: First, the grippers are installed on the telescopic end of the third telescopic cylinder 118. Then, the mold component is assembled into the assembly slot 108 of the mold base 107. At the same time, the iron cores to be processed are stacked sequentially on the surface of one of the first moving disks 113 of the first conveyor frame 112. Then, the first moving disk 113 is driven to move along the first conveyor frame 112. After the stacked iron cores are conveyed to the designated work station area, the third telescopic cylinder 118 is driven to slide laterally along the sliding groove 117 of the second U-shaped frame 116 to complete the horizontal positioning of the grippers. The position is precisely adjusted; when the gripper is aligned directly above the stacked iron core, the third telescopic cylinder 118 is activated to extend, driving the gripper downward and clamping the stacked iron core; after the clamping is completed, the third telescopic cylinder 118 is controlled to retract, driving the iron core to rise as a whole, and the third telescopic cylinder 118 is driven again to slide and change position along the second U-shaped frame 116 until the stacked iron core moves directly above the lower mold 127; the third telescopic cylinder 118 is activated again to drive the iron core downward, and the gripper precisely places the stacked iron core inside the middle ring 132.

[0021] Next, the mold base 107 is driven to move horizontally along the two sets of guide rails 106. After the mold base 107, along with the iron core and the mold as a whole, is moved to the designated casting processing area, the first telescopic cylinder 104 is activated. The first telescopic cylinder 104 drives the extrusion head 105 and the extrusion section 134 to move downward synchronously. When the extrusion section 134 presses the upper mold 135 against the inside of the vacuum sleeve 133, the positioning and fixing of the stacked iron core can be achieved, and the sealing and enclosure between the lower mold 127 and the upper mold 135 can be completed at the same time.

[0022] Then, the drive mounting base 119 is moved. When the injection tube 126 is aligned to the position directly below the bottom of the mold base 107, the second telescopic cylinder 111 is activated to drive the moving base 110 to rise. The moving base 110 then drives the injection tube 126 to move upward. This continues until the top of the injection tube 126 is in close contact with the bottom of the mold base 107, so that the first injection hole 109 and the second injection hole are precisely aligned. Then, the injection head is activated to squeeze and push the molten aluminum liquid. The molten aluminum liquid flows evenly into the stacked iron core through the first injection hole 109, the second injection hole, each set of second through holes and the first through hole, completing the casting and forming operation of the cast aluminum rotor iron core.

[0023] After the cast aluminum rotor core has cooled and solidified naturally, the first telescopic cylinder 104 is activated to retract, which drives the extrusion head 105, extrusion section 134 and upper die 135 to rise and reset synchronously.

[0024] Then, the mold base 107 is driven to move horizontally along the two guide rails 106 again, so that the formed cast aluminum rotor core is transferred to the material picking station; then, the third telescopic cylinder 118 is driven to slide along the sliding groove 117 of the second U-shaped frame 116, and the horizontal position of the gripper is adjusted to be directly above the cast aluminum rotor core; the third telescopic cylinder 118 is started to drive the gripper to move downward, and to clamp and grab the formed cast aluminum rotor core, and then the third telescopic cylinder 118 drives the workpiece to be lifted and moved; when the workpiece is aligned directly above any of the second moving disks 115 in the second conveyor frame 114, the third telescopic cylinder 118 is controlled to move downward, and the cast aluminum rotor core is placed stably on the second moving disk 115, and the second conveyor frame 114 completes the workpiece conveying, which facilitates the subsequent processing of the cast aluminum rotor core.

[0025] The mold component also includes a hole on the top of the vacuum sleeve 133, which is connected to the interior of the vacuum sleeve 133. The hole is used in conjunction with an external vacuum device to evacuate the middle ring 132.

[0026] Specifically, by using the cavity in conjunction with external vacuum equipment, a closed vacuum negative pressure treatment is applied to the internal cavity of the middle ring 132. This allows for the early removal of air and impurities from the internal cavity and fitting gaps of the middle ring 132, effectively preventing casting defects such as porosity and shrinkage cavities caused by air trapped inside the molten aluminum flowing into the middle ring 132 during the aluminum casting process. This eliminates the structural looseness and insufficient strength caused by residual air bubbles at the source, significantly improving the density and uniformity of the internal structure of the cast aluminum rotor core, stabilizing the forming accuracy and overall mechanical properties, and effectively ensuring the overall casting quality and finished product qualification rate of the cast aluminum rotor core.

[0027] Please see Figure 4 , Figure 5 As shown, it also includes a demolding component, which consists of two demolding units symmetrically arranged about the top of the mounting plate 121 about the injection tube 126. Each demolding unit includes a second mounting hole 122 opened on the top of the mounting plate 121, an ejector pin 123 vertically movably mounted inside the second mounting hole 122, and an outer peripheral plate 124 fixed outside the ejector pin 123, and a fourth telescopic cylinder 125 mounted on the bottom of the mounting plate 121 and whose telescopic end is connected to the top of the outer peripheral plate 124.

[0028] Specifically, the demolding component can automatically complete the demolding process of the cast aluminum rotor without any manual intervention. This not only effectively improves the overall processing efficiency of the cast aluminum rotor, simplifies the production process, and adapts to the needs of continuous processing, but also significantly reduces the opportunity for operators to come into contact with high-temperature workpieces and mold structures, fundamentally avoiding the safety risk of operators being burned by high-temperature components.

[0029] Instructions regarding the demolding parts: After the cast aluminum rotor core has cooled and solidified naturally, the first telescopic cylinder 104 is activated, which drives the extrusion head 105, extrusion section 134 and upper die 135 to rise and reset synchronously. Then the fourth telescopic cylinder 125 is activated, which drives the ejector pin 123 to extend upward. During the upward movement of the ejector pin 123, the formed cast aluminum rotor core is smoothly ejected from the inside of the middle ring 132, realizing rapid demolding of the workpiece, simplifying the demolding operation process, and effectively improving the overall production efficiency of the cast aluminum rotor core.

[0030] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A mold for forming a low-density, high-speed cast aluminum rotor core for a servo motor, characterized in that, include: A mold assembly (100) consisting of an extrusion part, a moving part, a mold part, an injection part, a loading part, a unloading part, and a gripper part; The extrusion component includes a platform (101), a first U-shaped frame (103) fixed inside the platform (101), a first telescopic cylinder (104) assembled on the top of the first U-shaped frame (103) and whose telescopic end extends through the top of the first U-shaped frame (103) and into the interior of the first U-shaped frame (103), and an extrusion head (105) assembled at the telescopic end of the first telescopic cylinder (104). The movable component includes a enclosure (102) fixed to the top of the platform (101) and arranged around the first U-shaped frame (103), two guide rails (106) symmetrically arranged inside the enclosure (102), and a mold base (107) assembled between the two guide rails (106) and sliding along the length of the two guide rails (106), wherein the mold base (107) is used to place the mold component; The mold component includes a lower mold (127), an axis (128) disposed on the top of the lower mold (127) and located at the center of the lower mold (127), a positioning sleeve (131) assembled on the top of the lower mold (127), a middle ring (132) assembled inside the positioning sleeve (131), a vacuum sleeve (133) assembled outside the middle ring (132), an upper mold (135) abutting against the inside of the vacuum sleeve (133), and an extrusion part (134) assembled between the extrusion head (105) and the upper mold (135). The injection component includes a movable seat (110) disposed inside the first U-shaped frame (103), and a second telescopic cylinder (111) assembled inside the first U-shaped frame (103) and whose telescopic end is connected to the top of the movable seat (110). When the second telescopic cylinder (111) is working, the movable seat (110) moves up and down inside the first U-shaped frame (103). The feeding component includes a first conveyor frame (112) fixed to the top of the platform (101), and multiple sets of first moving disks (113) arranged inside the first conveyor frame (112) and moving along the length of the first conveyor frame (112); The unloading component includes a second conveyor frame (114) fixed to the top of the platform (101), and multiple sets of second moving discs (115) arranged inside the second conveyor frame (114) and moving along the length of the second conveyor frame (114); The gripper includes a second U-shaped frame (116) fixed to the top of the platform (101), a sliding groove (117) opened on the top of the second U-shaped frame (116), and a third telescopic cylinder (118) assembled inside the sliding groove (117) and moving along the length of the sliding groove (117), wherein the telescopic end of the third telescopic cylinder (118) is used for the gripper to be installed.

2. The servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 1, characterized in that, The movable component also includes an assembly groove (108) opened on the top of the mold base (107), and a first injection hole (109) opened at the center of the assembly groove (108) and passing through the bottom of the mold base (107) and the bottom surface of the assembly groove (108).

3. The servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 1, characterized in that, The mold component also includes a hole formed on the top of the vacuum sleeve (133) and communicating with the interior of the vacuum sleeve (133).

4. The servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 3, characterized in that, The orifice is used in conjunction with an external vacuum device to evacuate the middle ring (132).

5. The servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 1, characterized in that, The injection component also includes a mounting plate (121), a first mounting hole opened on the top of the mounting plate (121), an injection tube (126) assembled inside the first mounting hole, a second injection hole opened on the top of the injection tube (126) and corresponding to the position of the first injection hole (109), an injection cylinder (120) assembled at the bottom of the injection tube (126) and communicating with the injection tube (126), an injection head assembled inside the injection cylinder (120) and used to drive the aluminum liquid inside the injection cylinder (120), and a mounting seat (119) slidably assembled on the top of the movable seat (110) and used for mounting the injection cylinder (120).

6. The servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 1, characterized in that, It also includes a demolding component, which consists of two demolding units, which are symmetrically arranged on the top of the mounting plate (121) about the injection tube (126); The demolding unit includes a second mounting hole (122) opened on the top of the mounting plate (121) and an ejector pin (123) vertically movably assembled inside the second mounting hole (122).

7. A servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 6, characterized in that, The demolding unit also includes an outer plate (124) fixed to the outside of the ejector pin (123) and a fourth telescopic cylinder (125) assembled at the bottom of the mounting plate (121) and whose telescopic end is connected to the top of the outer plate (124).

8. The servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 1, characterized in that, The mold component also includes a first threaded hole (129) opened at the bottom of the lower mold (127) and passing through the bottom and top of the lower mold (127) respectively, a second threaded hole opened at the bottom of the shaft (128) and corresponding to the position of the first threaded hole (129), and a fixing bolt (130) threadedly assembled inside the first threaded hole (129) and the second threaded hole.

9. A servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 8, characterized in that, The mold component also includes multiple sets of first through holes arranged in a ring at the bottom of the lower mold (127) and passing through the bottom and top of the lower mold (127), and multiple sets of second through holes arranged in a ring at the bottom of the mold base (107) and passing through the bottom of the mold base (107) and the bottom surface of the assembly groove (108).

10. A servo motor cast aluminum rotor low-density high-speed iron core forming mold according to claim 9, characterized in that, The positions of the multiple first perforations and the multiple second perforations correspond one-to-one.

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