Injection molding device for motor rotor production
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XIANGYANG GEAR ELECTROMECHANICAL CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-21
AI Technical Summary
When traditional injection molding equipment is used to produce motor rotors, the finished product tends to roll and is difficult to store, resulting in surface damage, displacement of internal permanent magnets, or structural deformation, which affects product quality and yield.
An injection molding device was designed, comprising a base, an upper mold base, a lower mold base, an electric push rod, and a storage compartment. The electric push rod works in concert to achieve stable ejection of the rotor and horizontal pushing into the storage compartment. Combined with side plates and buffer plates for protection, the rotor is prevented from rolling and colliding.
It effectively prevents the rotor from rolling and colliding during demolding, improves product qualification rate and quality stability, increases production efficiency, reduces safety hazards, and enhances automation level.
Smart Images
Figure CN224527823U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of motor parts processing equipment, and more specifically, to an injection molding device for producing motor rotors. Background Technology
[0002] As the core moving component of a motor, the motor rotor is usually manufactured by injection molding, which combines a metal core with insulating materials. Due to its high precision and efficiency, injection molding technology has significant advantages in mass production of motor rotors with complex structures. This involves the systematic coordination of mold design, ejection mechanism and post-processing.
[0003] However, since motor rotors are mostly cylindrical and have smooth surfaces, after the finished injection molded part is ejected from the mold by the traditional injection molding equipment, the molded part is very prone to rolling due to gravity or inertia, or even falling directly to the ground from the working area. This phenomenon can easily cause damage to the rotor surface, displacement of the internal permanent magnets or structural deformation, which seriously affects product quality and pass rate.
[0004] In view of this, we propose an injection molding device for producing motor rotors. Utility Model Content
[0005] Technical problems to be solved The purpose of this invention is to provide an injection molding device for producing motor rotors, so as to solve the problem mentioned in the background art that the finished product is easy to roll and is not easy to store when ejecting the finished product in the traditional injection molding device for producing motor rotors.
[0006] Technical solution
[0007] An injection molding device for producing motor rotors includes a base and a lower mold base fixedly connected to the base. An upper mold base is slidably disposed on the lower mold base. An injection port is opened at the top of the upper mold base. Multiple ejector ports are opened inside the lower mold base. First electric push rods are fixedly connected to both sides of the base. The extended ends of the first electric push rods are fixedly connected to the upper mold base. A connecting frame is slidably disposed inside the base. Multiple ejector rods for ejecting finished injection molded parts from below the lower mold base through the ejector ports are fixedly connected to the connecting frame. A storage compartment for storing finished injection molded parts is fixedly connected to one side of the connecting frame. A third electric push rod for pushing finished injection molded parts from the lower mold base into the storage compartment is fixedly connected to the other side of the connecting frame.
[0008] Preferably, a second electric push rod is fixedly connected inside the base, and the extended end of the second electric push rod is fixedly connected to the connecting frame. The base is provided with an movable groove that matches the size of the connecting frame.
[0009] Preferably, a mounting bracket is fixedly connected to the connecting frame, and the third electric push rod is fixedly connected to the mounting bracket. In the initial state, the extended end of the third electric push rod is located on one side of the upper mold base in the vertical projection direction.
[0010] Preferably, side plates are fixedly connected to both sides of the upper mold base, and the side plates are used to prevent the finished injection molded parts from sliding out from both sides of the lower mold base.
[0011] Preferably, a buffer plate is slidably disposed inside the storage compartment, and the buffer plate is elastically connected to the inner bottom wall of the storage compartment by multiple springs.
[0012] Preferably, the upper mold base is fixedly connected with a plurality of guide rods that penetrate the lower mold base.
[0013] Preferably, when the connecting frame moves from the bottom of the movable groove to the top of the movable groove, the top of the storage compartment is exactly flush with the top of the lower mold base, and at this time the third electric push rod is exactly aligned with the ejected finished injection molded part. Beneficial effects
[0014] Compared with existing technologies, the advantages of this utility model are: This invention, by setting up a storage compartment driven by a third electric push rod and a blocking structure on the side plate, can stably and horizontally push the rotor into the storage compartment immediately after it is pushed out of the lower mold base by the push rod. In addition, the storage compartment is equipped with a spring buffer plate to further absorb the impact energy when the rotor enters. This combination of actions avoids the risk of the rotor falling freely due to its own shape or rolling and colliding disorderly on the working surface, thereby greatly reducing damage such as surface scratches, permanent magnet displacement or structural deformation, and directly improving the product qualification rate and quality stability.
[0015] This utility model device integrates automatic ejection and automatic push-in functions. With the movable slot design, it ensures precise lifting and positioning of the connecting frame and the storage bin, forming a highly automated closed-loop process. The rotor can be demolded and safely transferred without manual intervention, which not only significantly improves production efficiency, but also completely eliminates the safety hazards such as burns or pinches caused by operators handling parts in the high-temperature mold area, thus improving the automation level and safety of the entire production line.
[0016] The storage compartment of this utility model is directly fixed on the connecting frame and rises and falls synchronously with the ejection mechanism. The entire unloading mechanism and the mold ejection mechanism are integrated and set in the base and the side movable groove space, making full use of the equipment space. The structure is compact and avoids the need for additional large and complex independent unloading equipment. At the same time, the guide rod ensures the processing accuracy, while the side plate and the lower mold base form a reliable guiding and positioning environment. This structure is easy to manufacture, install and maintain. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention from another angle; Figure 3 This is a diagram showing the state of the finished injection molded part during ejection. Figure 4 This is a schematic diagram of the connection relationship of the connecting frame of this utility model.
[0018] Figure 5 This is a cross-sectional view of the storage compartment of this utility model.
[0019] The following are the labels in the diagram: 1. Base, 2. Lower mold base, 3. Upper mold base, 4. Guide rod, 5. Side plate, 6. First electric push rod, 7. Injection port, 8. Ejection port, 9. Ejection rod, 10. Second electric push rod, 11. Connecting frame, 111. Movable groove, 12. Mounting frame, 13. Third electric push rod, 14. Storage compartment, 15. Buffer plate, 16. Spring. Detailed Implementation
[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0021] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Please see Figures 1-5 This utility model provides a technical solution: An injection molding device for producing motor rotors includes a base 1 and a lower mold base 2 fixedly connected to the base 1. An upper mold base 3 is slidably disposed on the lower mold base 2. An injection port 7 is opened on the top of the upper mold base 3. Multiple ejector ports 8 are opened inside the lower mold base 2. First electric push rods 6 are fixedly connected to both sides of the base 1. The extended ends of the first electric push rods 6 are fixedly connected to the upper mold base 3. A connecting frame 11 is slidably disposed inside the base 1. Multiple ejector rods 9 are fixedly connected to the connecting frame 11 for ejecting finished injection molded parts from below the lower mold base 2 through the ejector ports 8. One side of the connecting frame 11 is fixedly... A storage compartment 14 for storing finished injection molded parts is fixedly connected to the connecting frame 11. A third electric push rod 13 for pushing the finished injection molded parts from the lower mold base 2 into the storage compartment 14 is fixedly connected to the other side of the connecting frame 11. This arrangement creates a continuous ejection, pushing and storage action flow, reduces the time the rotor is exposed to the open space after being freed from the constraint, and quickly transfers the finished injection molded parts from the mold to the storage compartment 14. This avoids the risk of rolling, free fall or even uncontrolled rolling out of the working area caused by the shape of the rotor itself, thereby effectively protecting the rotor from collision damage.
[0024] Specifically, a second electric push rod 10 is fixedly connected inside the base 1. The extended end of the second electric push rod 10 is fixedly connected to the connecting frame 11. The base 1 is provided with an movable groove 111 that matches the size of the connecting frame 11. This configuration enables precise positioning and stable driving of the ejection action. The second electric push rod 10 provides a controllable, linear and powerful ejection force to ensure that the rotor can be smoothly ejected from the mold cavity.
[0025] In addition, a mounting bracket 12 is fixedly connected to the connecting frame 11, and a third electric push rod 13 is fixedly connected to the mounting bracket 12. In the initial state, the extended end of the third electric push rod 13 is located on one side of the upper mold base 3 in the vertical projection direction. This setting effectively avoids motion interference and structural occupation. Specifically, since the third electric push rod 13 and the storage compartment 14 are raised and lowered synchronously with the connecting frame 11, it ensures that the stroke of the first electric push rod 6 driving the upper mold base 3 to rise and fall is not obstructed, thus optimizing the utilization of the internal space of the equipment and ensuring the coordination and safety of each component in the automated operation.
[0026] Secondly, side plates 5 are fixedly connected to both sides of the upper mold base 3. The side plates 5 are used to prevent the finished injection molded parts from sliding out from both sides of the lower mold base 2. With this arrangement, the side plates 5 can provide critical and reliable side enclosure protection during the time when the rotor is ejected to the surface of the lower mold base 2 until it is pushed into the storage compartment 14, eliminating the possibility of the rotor rolling off the side of the device and causing damage or production interruption.
[0027] Furthermore, a buffer plate 15 is slidably installed inside the storage compartment 14. The buffer plate 15 is elastically connected to the inner bottom wall of the storage compartment 14 through multiple springs 16. This arrangement can effectively provide flexible support and buffer protection for the rotor entering the storage compartment 14, effectively avoiding surface damage caused by direct impact on the hard surface when the rotor enters the compartment.
[0028] Furthermore, multiple guide rods 4 that penetrate the lower mold base 2 are fixedly connected to the upper mold base 3. This arrangement ensures high-precision alignment and smooth movement during mold closing and opening, thus guaranteeing the dimensional accuracy and molding quality of the final rotor.
[0029] Furthermore, when the connecting frame 11 moves from the bottom of the movable groove 111 to the top of the movable groove 111, the top of the storage compartment 14 is exactly flush with the top of the lower mold base 2, and at this time the third electric push rod 13 is exactly aligned with the ejected finished injection molded part. This setting ensures that when the ejector rod 9 ejects the finished injection molded part, the storage compartment 14 and the third electric push rod 13 have already entered the working position, ensuring the smooth progress of the subsequent ejection and loading operations, and ensuring the smoothness and accuracy of the operation.
[0030] Working principle: The motor rotor injection molding device achieves safe material unloading through coordinated mechanical actions: when the mold opens, the first electric push rods 6 on both sides drive the upper mold base 3 to rise, exposing the injection-molded rotor to the top surface of the lower mold base 2; subsequently, the second electric push rod 10 in the base 1 pushes the connecting frame 11 to rise vertically along the movable groove 111, driving the ejector rod 9 to extend from the top outlet 8 of the lower mold base 2, smoothly pushing the rotor away from the mold working surface to a predetermined height; at this moment, the connecting frame 11 has risen to the top of the movable groove 111, and it is fixed to the top of the storage compartment 14 on one side. The part is flush with the lower mold base 2, forming a seamless transition platform. The third electric push rod 13 on the other side is precisely positioned by the mounting bracket 12, and its extended end is horizontally aligned with the lifted rotor, instantly pushing the rotor to slide laterally across the top surface of the lower mold base 2, effectively avoiding the risk of the rotor rolling due to its cylindrical shape. The side plate 5 at the same time restrains the lateral displacement of the rotor, so that it accurately enters the storage compartment 14. The buffer plate 15 supported by the spring 16 in the compartment absorbs the impact force of the rotor falling into the compartment. After the push is completed, all push rods are reset in sequence, and then the above operation is repeated.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An injection molding device for producing motor rotors, characterized in that: The system includes a base (1) and a lower mold base (2) fixedly connected to the base (1). An upper mold base (3) is slidably disposed on the lower mold base (2). An injection port (7) is opened on the top of the upper mold base (3). Multiple ejector ports (8) are opened inside the lower mold base (2). A first electric push rod (6) is fixedly connected to both sides of the base (1). The extended end of the first electric push rod (6) is fixedly connected to the upper mold base (3). A connecting frame (11) is slidably disposed inside the base (1). Multiple ejector rods (9) for ejecting finished injection molded parts from below the lower mold base (2) through the ejector ports (8) are fixedly connected to the connecting frame (11). A storage compartment (14) for storing finished injection molded parts is fixedly connected to one side of the connecting frame (11). A third electric push rod (13) for pushing finished injection molded parts from the lower mold base (2) into the storage compartment (14) is fixedly connected to the other side of the connecting frame (11).
2. The injection molding apparatus for producing motor rotors as described in claim 1, characterized in that: A second electric push rod (10) is fixedly connected inside the base (1). The extended end of the second electric push rod (10) is fixedly connected to the connecting frame (11). An active groove (111) adapted to the size of the connecting frame (11) is provided on the base (1).
3. The injection molding apparatus for producing motor rotors as described in claim 1, characterized in that: A mounting bracket (12) is fixedly connected to the connecting frame (11), and the third electric push rod (13) is fixedly connected to the mounting bracket (12). In the initial state, the extended end of the third electric push rod (13) is located on one side of the upper mold base (3) in the vertical projection direction.
4. The injection molding apparatus for producing motor rotors as described in claim 3, characterized in that: Both sides of the upper mold base (3) are fixedly connected with side plates (5), which are used to prevent the finished injection molded parts from sliding out from both sides of the lower mold base (2).
5. The injection molding apparatus for producing motor rotors as described in claim 4, characterized in that: A buffer plate (15) is slidably disposed inside the storage compartment (14), and the buffer plate (15) is elastically connected to the inner bottom wall of the storage compartment (14) by multiple springs (16).
6. The injection molding apparatus for producing motor rotors as described in claim 1, characterized in that: Multiple guide rods (4) that pass through the lower mold base (2) are fixedly connected to the upper mold base (3).
7. The injection molding apparatus for producing motor rotors as described in claim 2, characterized in that: When the connecting frame (11) moves from the bottom of the movable groove (111) to the top of the movable groove (111), the top of the storage compartment (14) is exactly flush with the top of the lower mold base (2), and at this time the third electric push rod (13) is exactly aligned with the ejected finished injection molded part.