A straight bar type stator core pre-bending device

Abstract

The utility model relates to the technical field of stator core, especially a straight bar type stator core pre-bending device, including device frame and enclosed door, the inside of device frame is provided with fixed assembly, the fixed assembly includes the bending groove of setting in device frame inside, the inside rotation connection of bending groove has the rotating lever, the utility model discloses the setting of device frame and fixed assembly makes through the entrance in pre-bending, and the iron core is put into the inside bending groove through the entrance, and subsequently the iron core is pushed the clamping plate to two sides through spring, makes the iron core be located two clamping plates middle, and subsequently the clamping plate of iron core two sides is pushed the iron core and is clamped through spring, and when bending roller rotates, the cooperation of fixed plate and push groove is carried out to the iron core on the guide plate and is pre-bent, makes the iron core be firmly clamped and avoids the iron core displacement when bending and leads to the iron core pre-bending insufficient.

Description

Technical Field

[0001] This utility model relates to the field of stator core technology, and in particular to a straight bar stator core pre-bending device. Background Technology

[0002] In the field of motor manufacturing, the pre-bending process of straight stator cores is a crucial step in ensuring the overall roundness of the stator and the performance of the motor. Currently, commonly used mechanical bending devices mostly employ fixed bending roller structures and separate clamping designs. These devices typically perform bending operations using pre-bending rollers in fixed positions. When dealing with cores of different specifications, manual intervention is often required to stop the machine, adjust the distance between the rollers, or change the mold. During the processing of stator cores, it is usually necessary to first fix them in place using a clamping mechanism before bending and forming the core. In the forming process, the currently commonly used method of automatic rigid clamping combined with mechanical pre-bending may pose a risk of coating damage due to the combined effect of clamping force and bending force in practical applications. The local stress concentration formed during clamping is superimposed on the radial force applied by the bending device during pre-bending, which can easily form a composite stress in the insulating coating area on the iron core surface. This composite stress may exceed the tensile or adhesion strength of the coating material, leading to coating crushing, microcrack propagation, or large-scale peeling. This not only affects the insulation performance and corrosion resistance of the iron core, but may also pose a challenge to the long-term reliability of the motor product. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a straight bar stator core pre-bending device.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a straight stator core pre-bending device, including a device frame and a closed door. A fixing component is provided inside the device frame. The fixing component includes a bending groove disposed inside the device frame. A rotating rod is rotatably connected inside the bending groove. A bending roller is fixedly connected to the surface of the rotating rod. A guide plate is provided inside the bending groove. Spring grooves are opened on both sides inside the guide plate. A spring is fixedly connected inside the spring groove. A clamping block is fixedly connected to the side of the spring away from the spring groove. A fixing plate is fixedly connected to the side of the guide plate near the bending roller. A pushing groove that cooperates with the fixing plate is opened on the side of the bending roller near the guide plate.

[0005] As a preferred technical solution of this utility model, a guide groove is provided inside the bending groove, and a slider is slidably connected inside the guide groove. The side of the slider near the bending roller is fixedly connected to the guide plate.

[0006] As a preferred technical solution of this utility model, the fixing component includes a motor box disposed outside the device frame, a motor fixedly connected inside the motor box, the rotating rod passing through the device frame and the motor box in sequence and extending into the interior of the motor box on the side near the motor box, and one end of the rotating rod extending into the interior of the motor box being fixedly connected to the drive shaft of the motor.

[0007] As a preferred technical solution of this utility model, the fixing component includes an inlet that is opened outside the device frame and communicates with the bending groove, and rubber plates are fixedly connected to the opposite sides of the two clamping blocks.

[0008] As a preferred technical solution of this utility model, the device frame is provided with an adjustment component inside. The adjustment component includes a plurality of limiting grooves opened on the side of the closed door near the device frame, and the adjustment component includes a fixing rod disposed on the side of the guide plate near the closed door and used in conjunction with the limiting grooves.

[0009] Compared with the prior art, the beneficial effects that this utility model can achieve are: This invention, through the arrangement of the device frame and fixing components, allows the iron core to be placed into the bending groove through the inlet during pre-bending. The iron core is then pushed to both sides by springs, positioning the iron core between the two clamping plates. The clamping plates on both sides of the iron core are then clamped by springs. As the bending roller rotates, the iron core on the guide plate is pre-bent through the cooperation of the fixing plate and the pushing groove. This prevents the iron core from being over-clamped during pre-bending, which could cause the coating on the iron core surface to peel off and affect subsequent use, thus increasing the yield rate of pre-bent iron cores to a certain extent.

[0010] This invention, through the arrangement of a device frame, a closed door, and an adjustment component, allows the distance between the guide plate and the bending roller to be adjusted by pulling a fixed rod before pre-bending, through the cooperation of the guide groove and the slider. By closing the closed door, the fixed rod is inserted into the matching limiting groove, and the guide plate is limited by the fixed rod. By adjusting the distance between the guide groove and the bending roller, it can accommodate more sizes of iron cores, thus increasing the applicability of the device. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the closed door of this utility model; Figure 2 This is a schematic diagram of the bending groove of this utility model; Figure 3 This is a schematic diagram of the limiting groove of this utility model; Figure 4 This is a schematic diagram of the guide groove of this utility model; Figure 5 This is a schematic diagram of the structure of the guide plate of this utility model; Figure 6 This is a schematic diagram of the structure of the motor housing of this utility model; Figure 7 This is a schematic diagram of the structure of the push groove of this utility model.

[0012] Among them: 1. Device frame; 11. Enclosed door; 21. Bending groove; 22. Rotating rod; 23. Bending roller; 24. Guide plate; 25. Spring groove; 26. Spring; 27. Clamping block; 28. Fixing plate; 29. ​​Pushing groove; 201. Guide groove; 202. Slider; 203. Motor box; 204. Inlet; 205. Rubber plate 30. Limiting groove; 31. Fixing rod. Detailed Implementation

[0013] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0014] Example: Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a straight stator core pre-bending device includes a device frame 1 and a closed door 11. A fixing assembly is installed inside the device frame 1. The fixing assembly includes a bending groove 20 installed inside the device frame 1. A rotating rod 21 is rotatably connected inside the bending groove 20. A bending roller 22 is fixedly connected to the surface of the rotating rod 21. A guide plate 23 is installed inside the bending groove 20. Spring grooves 24 are formed on both sides of the guide plate 23. Springs 25 are fixedly connected inside the spring grooves 24. A clamping block 26 is fixedly connected to the side of the spring 25 away from the spring groove 24. A fixing plate 27 is fixedly connected to the side of the guide plate 23 near the bending roller 22. A pushing groove 28 that cooperates with the fixing plate 27 is formed on the side of the bending roller 22 near the guide plate 23. The device frame 1 has a guide groove 29 inside, and a slider 201 is slidably connected inside the guide groove 29. The side of the slider 201 near the bending roller 22 is fixedly connected to the guide plate 23. The fixing component includes a motor housing 202 located outside the device frame 1. A motor 203 is fixedly connected inside the motor housing 202. The motor 203 is a servo motor, reference model Toda 400w. The rotating rod 21 passes through the device frame 1 and the motor housing 202 in sequence and extends into the motor housing 202. One end of the rotating rod 21 extending into the motor housing 202 is fixedly connected to the drive shaft of the motor 203. The fixing component includes an inlet 204 located outside the device frame 1 and communicating with the bending groove 20. Rubber plates 205 are fixedly connected to the opposing sides of the two clamping blocks 26.

[0015] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the iron core to be pre-bent is inserted into the bending groove 20 through the inlet 204. One end of the iron core entering the bending groove 20 is pushed to both sides by the spring 25 to the clamping blocks 26, so that the iron core is located between the two clamping blocks 26. Then, the clamping blocks 26 on both sides of the iron core are squeezed by the spring 25 to clamp the iron core. The rubber plate 205 on the clamping block 26 increases the friction with the iron core to prevent the iron core from falling off. Then, the motor 203 is started. The drive shaft of the motor 203 drives the rotating rod 21 to rotate, so that the rotating rod 21 drives the bending roller 22 to rotate. When the bending roller 22 rotates, the fixed plate 27 and the push groove 28 work together to drive the bending roller 22 to drive the guide plate 23 to rotate around the bending roller 22 synchronously, so that the iron core is also pre-bent by being clamped by the guide plate 23.

[0016] refer to Figure 1 and Figure 3As shown, the device frame 1 is equipped with an adjustment assembly, which includes several limiting grooves 30 formed on the side of the closed door 11 near the device frame 1, and a fixing rod 31 disposed on the side of the guide plate 23 near the closed door 11 to cooperate with the limiting grooves 30. refer to Figure 1 and Figure 3 As shown, when pre-bending is required, pulling the fixed rod 31 through the cooperation of the guide groove 29 and the slider 201 causes the guide plate 23 to be pulled towards the bending roller 22. The distance between the guide plate 23 and the bending roller 22 is adjusted to match the size of the iron core to be pre-bent, and the fixed plate 27 is inserted into the push groove 28. Then the closed door 11 is closed, and the fixed rod 31 is inserted into the limiting groove 30. After use, the operator opens the closed door 11, so that the limiting groove 30 cancels the limitation on the fixed rod 31 and the guide plate 23 is unlimited. Then the operator takes out the pre-bent iron core from inside the bending groove 20.

[0017] Working principle: Before use: Refer to Figure 1 , Figure 2 and Figure 3 As shown, when pre-bending is required, the fixed rod 31 is pulled to pull the guide plate 23 toward the bending roller 22 through the cooperation of the guide groove 29 and the slider 201. The distance between the guide plate 23 and the bending roller 22 is adjusted to match the size of the iron core that needs to be pre-bent, and the fixed plate 27 is inserted into the push groove 28. Then the closing door 11 is closed, and the fixed rod 31 is inserted into the limiting groove 30.

[0018] When using: Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The iron core to be pre-bent is inserted into the bending groove 20 through the inlet 204. One end of the iron core entering the bending groove 20 is pushed to both sides by the spring 25 to the clamping blocks 26, so that the iron core is located between the two clamping blocks 26. Then, the clamping blocks 26 on both sides of the iron core are squeezed by the spring 25 to clamp the iron core. The rubber plate 205 on the clamping block 26 increases the friction with the iron core to prevent the iron core from falling off. Then, the motor 203 is started. The drive shaft of the motor 203 drives the rotating rod 21 to rotate, which in turn drives the bending roller 22 to rotate. When the bending roller 22 rotates, the fixed plate 27 and the push groove 28 work together to drive the bending roller 22 to rotate synchronously around the bending roller 22, so that the iron core is also pre-bent by being clamped by the guide plate 23.

[0019] After use: Reference Figure 1 and Figure 2As shown, the staff opens the closed door 11, so that the limiting groove 30 can no longer limit the fixed rod 31, and the guide plate 23 can no longer limit it. Then the staff takes out the pre-bent iron core from inside the bending groove 20.

[0020] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A straight-bar stator core pre-bending device, comprising a device frame (1) and a closing door (11), characterized in that, The device frame (1) is provided with a fixing component inside. The fixing component includes a bending groove (20) provided inside the device frame (1). A rotating rod (21) is rotatably connected inside the bending groove (20). A bending roller (22) is fixedly connected to the surface of the rotating rod (21). A guide plate (23) is provided inside the bending groove (20). Spring grooves (24) are provided on both sides inside the guide plate (23). A spring (25) is fixedly connected inside the spring groove (24). A clamping block (26) is fixedly connected to the side of the spring (25) away from the spring groove (24). A fixing plate (27) is fixedly connected to the side of the guide plate (23) near the bending roller (22). A pushing groove (28) that cooperates with the fixing plate (27) is provided on the side of the bending roller (22) near the guide plate (23).

2. The straight-bar stator core pre-bending device according to claim 1, characterized in that, The bending groove (20) has a guide groove (29) inside, and a slider (201) is slidably connected inside the guide groove (29). The slider (201) is fixedly connected to the guide plate (23) on the side near the bending roller (22).

3. The straight-bar stator core pre-bending device according to claim 1, characterized in that, The fixing component includes a motor housing (202) disposed outside the device frame (1), and a motor (203) is fixedly connected inside the motor housing (202).

4. A straight-bar stator core pre-bending device according to claim 3, characterized in that, The rotating rod (21) passes through the device frame (1) and the motor box (202) in sequence on the side near the motor box (202) and extends into the interior of the motor box (202). One end of the rotating rod (21) extending into the interior of the motor box (202) is fixedly connected to the drive shaft of the motor (203).

5. A straight-bar stator core pre-bending device according to claim 1, characterized in that, The fixing component includes an inlet (204) that is opened outside the device frame (1) and communicates with the bending groove (20), and rubber plates (205) are fixedly connected to the opposite sides of the two clamping blocks (26).

6. The straight-bar stator core pre-bending device according to claim 1, characterized in that, The device frame (1) is provided with an adjustment component inside. The adjustment component includes several limiting grooves (30) opened on the side of the closed door (11) near the device frame (1). The adjustment component includes a fixing rod (31) set on the side of the guide plate (23) near the closed door (11) and used in conjunction with the limiting grooves (30).

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