An automatic testing device for motor stator coils

Abstract

This disclosure relates to the technical field of motor manufacturing. One embodiment of this disclosure provides an automatic testing device for motor stator coils, comprising: a base and a testing instrument body. The testing instrument body is mounted on the base, a fixing ring is disposed on the base, a support assembly is disposed on the base and the fixing ring, a fixing frame is fixed to the surface of the base, and a connecting assembly is disposed on the fixing frame. The support assembly includes several fixing seats, all of which are fixed to the surface of the base. A transmission groove is formed on the surface of the fixing seat, and several guide rods are disposed in the transmission groove. A sliding seat is connected to the guide rod, and an inner support frame is disposed on the sliding seat. Through the above technical solution, the technical problem of the significant cumulative time consumption in the preparation and finishing work of each stator coil test in the prior art, resulting in low overall testing efficiency and difficulty in meeting the high-speed operation requirements of modern production lines is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of motor manufacturing, and specifically to an automatic testing device for motor stator coils. Background Technology

[0002] In the motor manufacturing industry, the stator coil is a core component, and testing its insulation performance, conductivity, and other parameters is a crucial step in ensuring motor quality. Currently, the industry mostly uses manual assistance or semi-automated equipment to test stator coils. During the testing process, the coil leads need to be manually connected and fixed to the interface of the testing instrument, and then manually disassembled after the test is completed. This installation and disassembly process consumes a lot of time.

[0003] Especially in mass production scenarios, the preparation and finishing work for testing each stator coil consumes a significant amount of time, resulting in low overall testing efficiency and making it difficult to meet the high-speed operation requirements of modern production lines. Furthermore, manual operation is susceptible to factors such as operator skill level and fatigue, potentially leading to problems like loose wiring and poor contact. This not only affects the accuracy of test data but may also further extend the testing cycle due to repeated operations. In addition, frequent manual installation and disassembly increases the risk of damage to the coil leads, indirectly increasing production costs.

[0004] Therefore, optimizing the installation and disassembly process during stator coil testing, reducing the proportion of non-testing time, and improving testing efficiency and stability have become urgent technical problems to be solved in the field of motor manufacturing. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide an automatic testing device for motor stator coils, which solves the technical problem that the cumulative time spent on the preparation and finishing work of each stator coil in the prior art is significant, resulting in low overall testing efficiency and difficulty in meeting the high-speed operation requirements of modern production lines.

[0006] According to one aspect, at least one embodiment of this disclosure provides an automatic testing device for motor stator coils, comprising: A base and a tester body, wherein the tester body is mounted on the base; A fixing ring and a support assembly, wherein the fixing ring is disposed on the base, and the support assembly is disposed on the base and the fixing ring; A fixing frame and a connecting component, wherein the fixing frame is fixed to the surface of the base, and the connecting component is disposed on the fixing frame; The support assembly includes several fixed seats, all of which are fixed to the surface of the base. The surface of each fixed seat has a transmission groove, and several guide rods are arranged in the transmission groove. A sliding seat is connected to each guide rod, and an inner support frame is arranged on the sliding seat.

[0007] As a further technical solution, each guide rod is fitted with a first spring, a rotating ring is slidably connected to the fixed ring, a number of push columns are provided on the inner side of the rotating ring, an inclined groove is opened on the outer end face of the sliding seat, and one end of the push column is slidably attached to the surface of the inclined groove.

[0008] As a further technical solution, the connecting component includes a pair of fixing plates, which are respectively fixed at both ends of the top of the fixing frame. A pair of clamping wheels are rotatably connected to the side surface of the fixing plate, and one of the clamping wheels is driven to rotate by electricity.

[0009] As a further technical solution, fixed clamps are provided at both ends of the surface of the fixed frame, and a pair of connecting posts are provided on the side surface of the fixed clamps, with movable clamps slidably fitted onto the pair of connecting posts.

[0010] As a further technical solution, the movable clamping plate is connected to the detection end of the main body of the tester, a second spring is fitted on the connecting column, and the fixed clamping plate and the movable clamping plate are located directly below a pair of clamping wheels.

[0011] As a further technical solution, the upper ends of both the fixed clamp and the movable clamp are inclined and bent outwards, and the movable clamp and the fixed clamp form a Y-shaped structure.

[0012] As a further technical solution, the surface of each clamping wheel is provided with a pair of limiting strips.

[0013] As a further technical solution, a handle is provided on the outer end face of the rotating ring.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: 1. In this disclosure, the support assembly solves the problem of time-consuming stator fixing through a synchronous expansion and contraction structure. The rotating ring drives the push column to cooperate with the inclined groove, so that the inner support frame moves synchronously along the guide rod, quickly adapting to stators with different inner diameters; the first spring provides stable tension force, avoiding shaking during testing that affects data accuracy. This design eliminates the step of manually adjusting the fixing parts, significantly shortens the stator clamping time, adapts to batch testing needs, and at the same time, the inner support method does not damage the inner wall of the stator, ensuring product quality after testing.

[0015] 2. In this disclosure, the connecting component solves the problem of cumbersome lead wire connection through automatic conveying and elastic clamping. Clamping wheels convey the lead wire to the testing position, a Y-shaped clamping plate guides and positions it, and a second spring drives the movable clamping plate to clamp the fixed clamping plate, achieving reliable connection with the testing instrument. No manual plugging and unplugging of wires is required, reducing the risk of poor contact, improving testing efficiency and data reliability, and adapting to different lead wire specifications to meet the high-speed operation requirements of production lines. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Base; 2. Tester body; 3. Fixing ring; 4. Fixing frame; 5. Support assembly; 5-1. Fixing seat; 5-2. Transmission groove; 5-3. Guide rod; 5-4. Sliding seat; 5-5. Inner support frame; 5-6. First spring; 5-7. Rotating ring; 5-8. Pushing column; 5-9. Inclined groove; 6. Connecting assembly; 6-1. Fixing plate; 6-2. Clamping wheel; 6-3. Fixing clamping plate; 6-4. Connecting column; 6-5. Movable clamping plate; 6-6. Second spring; 7. Limiting strip; 8. Handle. Detailed Implementation

[0018] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0021] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-3 As shown, it illustrates an automatic testing device for motor stator coils according to an embodiment of the present disclosure, comprising: The base 1 and the tester body 2 are mounted on the base 1; The fixing ring 3 and the support assembly 5 are provided, wherein the fixing ring 3 is disposed on the base 1 and the support assembly 5 is disposed on the base 1 and the fixing ring 3; The fixing frame 4 and the connecting component 6 are provided on the fixing frame 4. The support assembly 5 includes several fixed seats 5-1, each fixed to the surface of the base 1. A transmission groove 5-2 is formed on the surface of each fixed seat 5-1, and several guide rods 5-3 are arranged within the transmission groove 5-2. A sliding seat 5-4 is connected to each guide rod 5-3, and an inner support frame 5-5 is provided on the sliding seat 5-4. A first spring 5-6 is fitted onto each guide rod 5-3. A rotating ring 5-7 is slidably connected to the fixed ring 3, and several pushing columns 5-8 are arranged on the inner side of the rotating ring 5-7. An inclined groove 5-9 is formed on the outer end face of the sliding seat 5-4, and one end of each pushing column 5-8 slides against the surface of the inclined groove 5-9.

[0025] In some examples, a support assembly 5 is designed to achieve internal support and fixation of the motor stator. This assembly includes fixed seats 5-1 evenly distributed around the circumference on the surface of the base 1 and fixed by welding. The transmission groove 5-2 is a rectangular groove. A guide rod 5-3 passes laterally through the sliding seat 5-4 and is fixed at both ends to the inner wall of the transmission groove 5-2. A first spring 5-6 is fitted on the guide rod 5-3, with its two ends abutting against the sliding seat 5-4 and the inner wall of the transmission groove 5-2, respectively. The fixed ring 3 is fixed to the base 1 by a bracket. The rotating ring 5-7 is slidably connected to the annular groove of the fixed ring 3 by a slider. The inner push post 5-8 corresponds one-to-one with the inclined groove 5-9 on the outer side of the sliding seat 5-4.

[0026] During operation, the external force drives the rotating ring 5-7 to rotate on the fixed ring 3, pushing the column 5-8 to slide along the inclined groove 5-9. Due to the inclined structure of the inclined groove 5-9, the column 5-8 generates a radial thrust on the sliding seat 5-4, overcoming the elastic force of the first spring 5-6, causing the sliding seat 5-4 to slide inward along the guide rod 5-3, driving the inner support frame 5-5 to retract inward. After the motor stator is inserted, it is released, and the elastic force of the first spring 5-6 restores the inner wall to be tightly supported. The motor stator can be disassembled by operating again.

[0027] Guide rod 5-3 ensures linear movement of sliding seat 5-4, first spring 5-6 provides restoring force, and the cooperation between inclined groove 5-9 and push column 5-8 converts rotational motion into radial linear motion, realizing synchronous expansion and contraction of inner support frame 5-5. This component precisely controls the inner support force through mechanical linkage, adapts to motor stators of different inner diameters, provides stable support, and avoids stator swaying affecting the results during testing.

[0028] like Figures 1-3As shown in the figure, the connecting component 6 in this embodiment includes a pair of fixing plates 6-1, which are respectively fixed to the top two ends of the fixing frame 4. A pair of clamping wheels 6-2 are rotatably connected to the side surface of the fixing plate 6-1, one of which is driven by electricity to rotate. Fixed clamping plates 6-3 are provided at both ends of the surface of the fixing frame 4. A pair of connecting posts 6-4 are provided on the side surface of the fixed clamping plates 6-3. Movable clamping plates 6-5 are slidably connected to the pair of connecting posts 6-4. The movable clamping plates 6-5 are connected to the detection end of the tester body 2. A second spring 6-6 is fitted on the connecting posts 6-4. The fixed clamping plates 6-3 and the movable clamping plates 6-5 are located directly below the pair of clamping wheels 6-2.

[0029] In some examples, to achieve a reliable connection of the electrical terminals, a connecting assembly 6 is designed. This assembly includes fixed plates 6-1 vertically welded to both ends of the top of the fixed frame 4, and a pair of clamping wheels 6-2 rotatably connected to the side surface of the fixed plates 6-1 via bearings. One of the clamping wheels is driven by a motor, and a conveying channel is formed between the two clamping wheels 6-2. The fixed clamping plates 6-3 on the surface of the fixed frame 4 correspond to the positions of the clamping wheels 6-2. The connecting post 6-4 is vertically fixed to the side surface of the fixed clamping plate 6-3, and the movable clamping plate 6-5 is slidably fitted onto the connecting post 6-4. A second spring 6-6 is fitted onto the connecting post 6-4, with its two ends abutting against the fixed clamping plate 6-3 and the movable clamping plate 6-5, respectively.

[0030] During operation, the electrical terminal is inserted from above the clamping wheel 6-2. The driven clamping wheel 6-2 rotates, causing the electrical terminal to move downwards, passing through the conveying channel to between the fixed clamping plate 6-3 and the movable clamping plate 6-5. The electrical terminal presses against the movable clamping plate 6-5, overcoming the elastic force of the second spring 6-6, causing the movable clamping plate 6-5 to separate from the fixed clamping plate 6-3. After the electrical terminal continues to move downwards to the detection position, the second spring 6-6 pushes the movable clamping plate 6-5 to reset, and together with the fixed clamping plate 6-3, clamps the electrical terminal. The movable clamping plate 6-5 is connected to the detection end of the tester body 2 through a wire, forming an electrical connection.

[0031] The rolling conveyor of clamping roller 6-2 ensures that the electrical terminals accurately enter the test position, while the elastic clamping of the second spring 6-6 provides stable contact pressure, preventing loosening and poor contact. This assembly, through mechanical conveying and elastic clamping, achieves automatic insertion and reliable connection of the electrical terminals, adapting to different terminal specifications and improving testing efficiency and accuracy.

[0032] For example, such as Figure 2 As shown, the upper ends of both the fixed clamping plate 6-3 and the movable clamping plate 6-5 are inclined outward and bent to transition, and the movable clamping plate 6-5 and the fixed clamping plate 6-3 form a Y-shaped structure.

[0033] In some examples, the Y-shaped structure at the upper ends of the fixed clamping plate 6-3 and the movable clamping plate 6-5 forms a natural guide entrance. When the terminal is conveyed downwards by the clamping roller 6-2, the Y-shaped opening automatically corrects the terminal position, allowing it to smoothly enter between the clamping plates. The inclined bending design reduces collisions between the terminal and the edges of the clamping plates, avoids jamming, ensures the terminal arrives at the test position smoothly, and improves the operational reliability of the connecting component 6.

[0034] For example, such as Figure 1 As shown, the clamping wheels 6-2 are each provided with a pair of limiting strips 7.

[0035] In some examples, the limiting strips 7 on the surface of the clamping rollers 6-2 are distributed circumferentially to prevent the terminals from shifting laterally during transport. When the terminal passes the clamping rollers 6-2, the limiting strips 7 contact the edge of the terminal, forming a guiding constraint to ensure that the terminal always moves along the center of the transport channel and falls accurately between the fixed clamping plate 6-3 and the movable clamping plate 6-5, avoiding test failure due to positional deviation and improving test accuracy.

[0036] For example, such as Figure 1 As shown, a handle 8 is provided on the outer end face of the rotating ring 5-7.

[0037] In some examples, the handle 8 on the outer end face of the rotating ring 5-7 facilitates manual operation of the rotating ring 5-7. By applying torque by gripping the handle 8, the tester can easily drive the rotating ring 5-7 to slide on the fixed ring 3, causing the push column 5-8 to press against the inclined groove 5-9, thus expanding and contracting the inner support frame 5-5. This allows for quick adjustment of the position of the inner support frame 5-5 to accommodate motor stators of different sizes.

[0038] In actual use: Hold handle 8 and rotate rotating ring 5-7 to push column 5-8 to slide along inclined groove 5-9 of sliding seat 5-4, causing sliding seat 5-4 to retract inward along guide rod 5-3. Inner support frame 5-5 retracts simultaneously, placing the motor stator between inner support frames 5-5. Release handle 8, and first spring 5-6 pushes sliding seat 5-4 back to its original position. Inner support frame 5-5 expands outward to tighten the inner wall of stator. Place the stator coil lead wire between clamping wheels 6-2. Electric drive clamping wheels 6-2 rotate, driving the lead wire downward. Guided by the inclined surface at the upper end of Y-shaped fixed clamping plate 6-3 and movable clamping plate 6-5, the movable clamping plate 6-5 is squeezed to slide along connecting column 6-4. Second spring 6-6 is compressed. After the lead wire is in place, movable clamping plate 6-5 returns to its original position and clamps the lead wire with fixed clamping plate 6-3. Connect the main body 2 of the tester to start testing. After completion, rotate rotating ring 5-7 in the opposite direction to remove the stator. The entire process does not require repeated disassembly and assembly.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An automatic testing device for motor stator coils, characterized in that, include: A base (1) and a tester body (2), wherein the tester body (2) is mounted on the base (1); A fixing ring (3) and a support assembly (5) are provided, wherein the fixing ring (3) is disposed on the base (1) and the support assembly (5) is disposed on the base (1) and the fixing ring (3); A fixing frame (4) and a connecting component (6) are provided on the fixing frame (4), wherein the fixing frame (4) is fixed to the surface of the base (1) and the connecting component (6) is disposed on the fixing frame (4); The support assembly (5) includes several fixed seats (5-1), each fixed seat (5-1) is fixed to the surface of the base (1), and the surface of the fixed seat (5-1) is provided with a transmission groove (5-2). Several guide rods (5-3) are provided in the transmission groove (5-2), and a sliding seat (5-4) is connected to the guide rod (5-3). An inner support frame (5-5) is provided on the sliding seat (5-4).

2. The automatic testing device for motor stator coils according to claim 1, characterized in that, Each guide rod (5-3) is fitted with a first spring (5-6), and a rotating ring (5-7) is slidably connected to the fixed ring (3). Several push posts (5-8) are provided on the inner side of the rotating ring (5-7). An inclined groove (5-9) is opened on the outer end face of the sliding seat (5-4), and one end of the push post (5-8) slides against the surface of the inclined groove (5-9).

3. The automatic testing device for motor stator coils according to claim 1, characterized in that, The connecting component (6) includes a pair of fixing plates (6-1), which are fixed at both ends of the top of the fixing frame (4). A pair of clamping wheels (6-2) are rotatably connected to the side surface of the fixing plate (6-1), and one of the clamping wheels (6-2) is driven to rotate by electricity.

4. The automatic testing device for motor stator coils according to claim 3, characterized in that, The fixed frame (4) has fixed clamps (6-3) at both ends of its surface. A pair of connecting posts (6-4) are provided on the side surface of the fixed clamps (6-3). Movable clamps (6-5) are slidably fitted onto the pair of connecting posts (6-4).

5. The automatic testing device for motor stator coils according to claim 4, characterized in that, The movable clamping plate (6-5) is connected to the detection end of the main body (2) of the tester. A second spring (6-6) is fitted on the connecting column (6-4). The fixed clamping plate (6-3) and the movable clamping plate (6-5) are located directly below a pair of clamping wheels (6-2).

6. The automatic testing device for motor stator coils according to claim 5, characterized in that, The upper ends of both the fixed clamp (6-3) and the movable clamp (6-5) are inclined outward and bent to transition, and the movable clamp (6-5) and the fixed clamp (6-3) form a Y-shaped structure.

7. The automatic testing device for motor stator coils according to claim 3, characterized in that, The clamping wheels (6-2) are each provided with a pair of limiting strips (7).

8. The automatic testing device for motor stator coils according to claim 2, characterized in that, A handle (8) is provided on the outer end face of the rotating ring (5-7).

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