Small motor stator core fixing device

Abstract

The utility model discloses a small-sized motor stator core fixing device, relates to the field of motor manufacturing, and aims to solve the problems that silicon steel sheets are easy to misplace during stacking and need to be manually adjusted in subsequent work, so that the workload of workers is increased, and the processing efficiency is influenced. The fixed table is connected with an inner diameter guider, the inner diameter guider is connected with a lower protective plate and an upper protective plate, the lower protective plate is fixedly connected with a connecting rod, the upper protective plate is provided with a through hole, the connecting rod is in threaded connection with a lifting ring nut, a stator core is placed between the lower protective plate and the upper protective plate, and the lower protective plate is provided with a through hole. The silicon steel sheet stacking device has the advantages that double limiting is carried out on the inner diameter and the outer diameter of the stator iron core through the inner diameter guider and the outer diameter guider, the silicon steel sheets are limited in the whole process on the sliding path of the silicon steel sheets, and it is guaranteed that the silicon steel sheets are stacked in order.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a small motor stator core fixing device. Background Technology

[0002] In the field of small motor manufacturing, the stator core, as one of the core components of the motor, directly affects the motor's performance and production cost through its manufacturing quality and efficiency. The stator core is typically composed of multiple stacked silicon steel sheets, which are bonded together using specific processes to form a core structure with good electromagnetic properties. However, existing stator core fixing devices for small motors have many problems in practical applications, severely restricting the manufacturing efficiency and quality of the stator core.

[0003] In existing stator core fixing devices, misalignment is highly likely to occur during the stacking of silicon steel sheets. This is because the existing fixing devices lack an effective positioning and guiding mechanism in their structural design. When workers place the silicon steel sheets one by one onto the fixing device, because the silicon steel sheets are relatively thin and have smooth surfaces, they are easily disturbed by external factors (such as slight vibrations, airflow, etc.) during placement, causing the silicon steel sheets to deviate from their intended positions, thus resulting in misalignment.

[0004] Once the silicon steel sheets become misaligned, they need to be adjusted. This not only increases the workload for workers, but the adjustment process is also often quite tedious. Workers need to carefully check the position of each silicon steel sheet and then use specialized tools to fine-tune them to ensure that all silicon steel sheets are accurately aligned. This process is not only time-consuming, but also requires a high level of skill from the workers. The slightest mistake can cause the silicon steel sheets to become misaligned again, further affecting the work progress. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a small motor stator core fixing device. This design effectively solves the problem that silicon steel sheets are prone to misalignment when stacked, requiring manual adjustment in subsequent work, which increases the workload of workers and affects processing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a base, a fixed platform fixedly connected to the base, an inner diameter guide connected to the fixed platform, a lower guard plate and an upper guard plate connected to the inner diameter guide, a connecting rod fixedly connected to the lower guard plate, a through hole for the connecting rod to pass through on the upper guard plate, a lifting eye nut threadedly connected to the connecting rod, a stator core placed between the lower guard plate and the upper guard plate, an outer diameter guide on both sides of the stator core, a bracket connected to the outer side of the outer diameter guide, and the bracket fixedly connected to the base.

[0007] Preferably, the inner diameter guide includes a self-locking turntable, which is rotatably connected to the base. The self-locking turntable is provided with multiple sets of guide grooves distributed at equal angles. The outline of the guide groove is a spiral line. A connecting pin is connected inside the guide groove. A sliding groove for the connecting pin to slide is provided on the fixed platform. A guide rod is provided above the sliding groove. The guide rod is fixedly connected to the connecting pin.

[0008] Preferably, there are three sets of guide rods, which are distributed at equal angles. Both the upper and lower guard plates have through holes that cooperate with the guide rods. With the cooperation of the through holes, the opening range of the three sets of guide rods is adjusted according to the inner diameter of the stator core.

[0009] Preferably, the outer diameter guide includes a support rod, both ends of which are fixedly connected to a bracket and a base. A parallel rod assembly is hinged to the inner side of the support rod, and a guide plate is hinged to the other side of the parallel rod assembly. A columnar protrusion is fixedly connected to the inner side of the guide plate.

[0010] Preferably, the parallel rod group includes two parallel first connecting rods and second connecting rods, a third connecting rod is hinged to the middle of the second connecting rod, a sliding sleeve is hinged to the other end of the third connecting rod, the sliding sleeve is slidably connected to the support rod, and a telescopic rod is connected between the sliding sleeve and the bracket.

[0011] Preferably, the upper guard plate has a positioning hole, a positioning rod passes through the positioning hole, and the lower guard plate has a threaded hole that is threadedly connected to the positioning rod.

[0012] Compared with the prior art, the outstanding advantages of this utility model are:

[0013] This utility model features an inner diameter guide and an outer diameter guide, which provide double limiting for the inside and outside of the stator core, ensuring the neat placement of the silicon steel sheets inside the stator core. At the same time, the outer diameter guide guides the grooves of the stator motor, preventing misalignment of the silicon steel sheets inside the stator core, reducing the workload of subsequent work, and improving processing efficiency.

[0014] This utility model adds an upper guard plate and a lower guard plate to the fixed platform to facilitate the subsequent removal of the stator core. After the upper guard plate and the lower guard plate have fixed the stator core, it can be lifted by the hook to replace the next set. This reduces the time occupied on the fixed platform and increases industrial production capacity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the positive fit structure between the outer diameter guide and the stator core of this utility model.

[0017] Figure 3 This is a schematic diagram of the lower guard plate connection structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the bottom structure of the upper guard plate of this utility model.

[0019] Figure 5 This is an exploded structural diagram of the inner diameter guide and the fixed platform of this utility model.

[0020] The following are the labeling elements in the diagram: 1. Base; 2. Fixed platform; 3. Inner diameter guide; 301. Self-locking turntable; 302. Guide groove; 303. Connecting pin; 304. Slide groove; 305. Guide rod; 4. Lower guard plate; 5. Upper guard plate; 6. Connecting rod; 7. Cylindrical hole; 8. Eye nut; 9. Stator core; 10. Outer diameter guide; 1001. Support rod; 1002. Guide plate; 1003. First connecting rod; 1004. Second connecting rod; 1005. Third connecting rod; 1006. Sliding sleeve; 1007. Telescopic rod; 11. Bracket; 12. Through hole; 13. Positioning hole; 14. Positioning rod; 15. Threaded hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see the appendix Figure 1-5 This embodiment discloses a small motor stator core fixing device, comprising a base 1, a fixing platform 2 fixedly connected to the base 1, an inner diameter guide 3 connected to the fixing platform 2, a lower guard plate 4 and an upper guard plate 5 connected to the inner diameter guide 3, a connecting rod 6 fixedly connected to the lower guard plate 4, a cylindrical hole 7 for the connecting rod 6 to pass through on the upper guard plate 5, a lifting eye nut 8 threadedly connected to the connecting rod 6, a stator core placed between the lower guard plate 4 and the upper guard plate 5, an outer diameter guide 10 provided on both sides of the stator core, a bracket 11 connected to the outer side of the outer diameter guide 10, and the bracket 11 fixedly connected to the base 1.

[0023] The stator core is composed of stacked silicon steel sheets. The fixing platform 2 in this application is cylindrical, supporting and housing the silicon steel sheets. The base 1 is a cuboid structure, larger than the fixing platform 2, providing stable support and preventing tipping during use. The inner diameter guide 3 on the fixing platform 2 has an adjustable profile, adaptable to stator cores of different specifications. Further facilitating the placement and removal of the stator core, a lower guard plate 4 is placed on the fixing platform 2 before the silicon steel sheets are placed. The lower guard plate 4 has a through hole 12 through which the inner diameter guide 3 passes, preventing interference between the lower guard plate 4 and the inner diameter guide 3. After the lower plate is placed, silicon steel sheets can be placed on top of it. When placing the silicon steel sheets, the outer diameter guides 10 on both sides are adjusted to be lowered to the position of the outer diameter of the stator core. The protrusion inside the outer diameter guide 10 cooperates with the stator core, which plays a role in arranging the silicon steel sheets neatly. The silicon steel sheets are neatly arranged under the action of the inner diameter guide 3 and the outer diameter guide 10. When an appropriate number are placed, the outer diameter guide 10 is moved away. Then, the upper guard plate 5 is moved to the top of the stator core 9. The cylindrical hole of the upper guard plate 5 allows the connecting rod 6 to pass through. The connecting rod 6 exposed at the upper end of the upper guard plate 5 is tightened by the lifting eye bolt. There is a lifting eye on the lifting eye bolt. The hook of the lifting frame can be hung in the lifting eye. Then, the neatly arranged sheets are lifted by the lifting frame.

[0024] Furthermore, to ensure the neatness of the stator core stacking, two positioning holes 13 spaced 180 degrees apart are provided on the upper guard plate 5. A positioning rod 14 passes through the positioning hole 13. The diameter of the positioning rod 14 is equal to the diameter of the groove of the stator core, and the positioning rod 14 fits perfectly into the groove to prevent the internal silicon steel sheet from shifting during lifting and movement. The lower end of the positioning rod 14 is threaded to the threaded hole 15 on the lower guard plate 4. The detachable connection of the positioning rod 14 facilitates operation by workers. According to the parameters of different specifications of stator cores, multiple positioning holes 13 on the upper guard plate 5 and multiple threaded holes 15 on the lower guard plate 4 can be set, so that the positioning rod 14 can play a role in fixing and limiting the stator cores of different specifications.

[0025] like Figure 5As shown, a worm gear assembly is connected below the self-locking turntable 301. The worm gear is rotatably mounted in the base 1, and a motor that drives the worm gear is also mounted on the base 1. When working, the motor drives the self-locking turntable 301 to rotate through the worm gear. At the same time, based on the reverse self-locking characteristic of the worm gear, the stability of the self-locking turntable 301 after rotation is ensured. The self-locking turntable 301 is provided with multiple sets of guide grooves 302 distributed at equal angles, and the outline of the guide grooves 302 is a spiral line. The unique shape of the spiral line ensures that when the self-locking turntable 301 rotates... During operation, the connecting pin 303, connected within the guide groove 302, moves along the trajectory of the spiral line, thereby adjusting its position and distance. Simultaneously, the sliding groove 304 on the fixed platform 2 provides guidance and constraint for the movement of the connecting pin 303, ensuring that the connecting pin 303 can only move along the direction of the sliding groove 304. This guarantees the stability and accuracy of the movement of the entire inner diameter guide 3. The guide rod 305 is fixedly connected to the connecting pin 303. When the connecting pin 303 moves within the guide groove 302, it drives the guide rod 305 to move together. There are three sets of guide rods 305 distributed at equal angles. This layout allows the guide rods 305 to evenly expand and adjust the inner diameter of the stator core.

[0026] With the cooperation of through hole 12, the opening range of the three sets of guide rods 305 is adjusted according to the inner diameter of the stator core. When it is necessary to adapt to stator cores with different inner diameters, by rotating the self-locking turntable 301, the connecting pin 303 moves along the guide groove 302, thereby driving the guide rods 305 to move under the restriction of the sliding groove 304 and through hole 12, thereby changing the opening distance between the guide rods 305 and realizing the fixation of stator cores with different inner diameters.

[0027] The bracket 11 has an n-shaped structure with an arc-shaped transition on the inner side of the middle section. The support rod 1001 is longitudinally installed between the bracket 11 and the base 1. The parallel rod group includes two parallel first connecting rods 1003 and second connecting rods 1004. The first connecting rods 1003 and second connecting rods 1004 are of the same length and remain parallel. During movement, the parallel rod group can maintain a relatively stable shape, which is beneficial for achieving precise guidance. The middle of the second connecting rod 1004 is hinged to a third connecting rod 1005, and the other end of the third connecting rod 1005 is hinged to a sliding sleeve 1006. The sliding sleeve 1006 is slidably connected to the support rod 1001. Under the action of the telescopic rod 1007, the sliding sleeve 1006 slides on the support rod 1001, increasing the flexibility and adjustability of the parallel rod group's movement. The other side of the parallel rod group is hinged to a guide plate 1002, and a columnar protrusion is fixedly connected to the inner side of the guide plate 1002. The guide plate 1002 is a component that directly contacts the outer diameter of the stator core and serves as a guide. The columnar protrusions can increase the contact area with the stator core or provide specific guidance and positioning to ensure that the stator core can be accurately placed and fixed in the outer diameter direction. The telescopic rod 1007 is a hydraulic telescopic rod 1007. The telescopic rod 1007 is connected to a hydraulic pump to adjust the synchronous extension and retraction of the telescopic rod 1007.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small motor stator core fixing device, characterized in that: The system includes a base (1), a fixed platform (2) fixedly connected to the base (1), an inner diameter guide (3) connected to the fixed platform (2), a lower guard plate (4) and an upper guard plate (5) connected to the inner diameter guide (3), a connecting rod (6) fixedly connected to the lower guard plate (4), a cylindrical hole (7) for the connecting rod (6) to pass through on the upper guard plate (5), a lifting eye nut (8) threadedly connected to the connecting rod (6), a stator core placed between the lower guard plate (4) and the upper guard plate (5), an outer diameter guide (10) provided on both sides of the stator core, a bracket (11) connected to the outer side of the outer diameter guide (10), and the bracket (11) fixedly connected to the base (1).

2. The small motor stator core fixing device according to claim 1, characterized in that: The inner diameter guide (3) includes a self-locking turntable (301), which is rotatably connected to the base (1). The self-locking turntable (301) is provided with multiple sets of guide grooves (302) distributed at equal angles. The outline of the guide groove (302) is a spiral line. A connecting pin (303) is connected inside the guide groove (302). The fixed platform (2) is provided with a sliding groove (304) for the connecting pin (303) to slide. A guide rod (305) is provided above the sliding groove (304). The guide rod (305) is fixedly connected to the connecting pin (303).

3. The small motor stator core fixing device according to claim 2, characterized in that: There are three sets of guide rods (305), and the three sets of guide rods (305) are distributed at equal angles. The upper guard plate (5) and the lower guard plate (4) are both provided with through holes (12) that cooperate with the guide rods (305). With the cooperation of the through holes (12), the opening range of the three sets of guide rods (305) is adjusted according to the inner diameter of the stator core.

4. The small motor stator core fixing device according to claim 1, characterized in that: The outer diameter guide (10) includes a support rod (1001), both ends of which are fixedly connected to the bracket (11) and the base (1). A parallel rod group is hinged to the inner side of the support rod (1001), and a guide plate (1002) is hinged to the other side of the parallel rod group. A columnar protrusion is fixedly connected to the inner side of the guide plate (1002).

5. A small motor stator core fixing device according to claim 4, characterized in that: The parallel rod group includes two parallel first connecting rods (1003) and second connecting rods (1004). A third connecting rod (1005) is hinged to the middle of the second connecting rod (1004). A sliding sleeve (1006) is hinged to the other end of the third connecting rod (1005). The sliding sleeve (1006) is slidably connected to the support rod (1001). A telescopic rod (1007) is connected between the sliding sleeve (1006) and the bracket (11).

6. The small motor stator core fixing device according to claim 1, characterized in that: The upper guard plate (5) has a positioning hole (13), and a positioning rod (14) passes through the positioning hole (13). The lower guard plate (4) has a threaded hole (15) that is threadedly connected to the positioning rod (14).

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