Synchronous clamping and holding mechanism for motor coil winding

Abstract

The utility model relates to a synchronous clamping and enclasping mechanism for a motor coil winding, which comprises a carrying frame, a servo motor, a speed reducer, a gear and rack meshing assembly, a stroke limiting assembly, a sliding block and an enclasping claw, and the gear and rack meshing assembly comprises a gear and racks arranged on the two sides of the gear in parallel. The displacement direction and the displacement distance of the racks on the two sides are controlled by a stroke limiting assembly, the racks are driven by a gear to move synchronously, at the same speed and in the opposite direction, and the stroke limiting assembly comprises a sliding block sliding rail assembly, a limiting block, a pushing block, a guide rod, a pushing spring and a U-shaped clamping block limiting stable meshing of the racks on the two sides, according to the synchronous clamping and enclasping mechanism for the motor coil winding, displacement and stress of the enclasping claws on the two sides are equally distributed through a gear and rack meshing assembly, the stability and accuracy of the clamping action posture are guaranteed, an arranged pushing spring selects an adaptive elastic specification and model according to the size and weight of the motor coil winding to be clamped and carried, and the clamping and enclasping efficiency is improved. And the stable clamping force is ensured to be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to a synchronous clamping and holding mechanism for motor coil windings. Background Technique

[0002] With the booming new energy vehicle market, as the power assembly of electric vehicles, the motor has become a new growth point in the vehicle market demand. The technical composition of the motor includes motor coil windings, rotor components, cooling systems, etc. Among them, as an important energized component of the motor, the electrical properties of each aspect of the coil cannot be ignored. In the automated production of motors, after the predetermined winding assembly is completed by wire winding, the motor coil winding needs to be transferred to the stator-rotor assembly station. During the transfer process, since the outer circumference of the motor coil winding usually cooperates with the coolant flow channel of the cooling system, it is integrally pre-assembled and formed with the motor housing, so it is relatively heavy, and the wall thickness of the flange position of the motor housing is relatively thin. When using existing robots to grasp, the flange position is usually clamped and lifted, but it is obvious that the clamping force is too large, which may cause deformation of the flange position of the motor housing. This is fatal to the requirements of high-precision assembly technology. Therefore, a special and stable clamping mechanism needs to be designed for the assembly body of such motor coil windings connected to the motor housing, and the clamping force is stably within a controllable clamping force range, and the clamping force cannot be increased for the sake of clamping, so as to ensure the precision quality control of the production of new energy vehicle motors and improve the product qualification rate. Content of the Utility Model

[0003] The purpose of the utility model is as follows: In view of the problem that during the production of motors for new energy vehicles, since the outer circumference of the motor coil winding usually cooperates with the coolant flow channel of the cooling system, it is integrally pre-assembled and formed with the motor housing, so it is relatively heavy, and the wall thickness of the flange position of the motor housing is relatively thin. When using existing robots to grasp and lift while clamping the flange position, it is very easy to have the problem that the clamping force is too large, resulting in excessive force on the flange position and deformation. We design a convenient automatic torque testing device to ensure the precision quality control of the production of new energy vehicle motors and improve the product qualification rate.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A synchronous clamping and holding mechanism for motor coil windings includes a handling frame, a servo motor, a reducer, a gear-rack meshing component, a stroke limiting component, a sliding block, and a gripper.

[0006] The gear-rack meshing component includes a gear and racks arranged in parallel on both sides of the gear. The central hole of the gear is keyway-fitted with the output shaft of the reducer. The input shaft of the reducer is connected to the main shaft of the servo motor, and the reducer is fixedly connected to the handling frame.

[0007] The racks on both sides are controlled by a stroke limit component for the displacement direction and displacement distance, and are driven by gears to achieve synchronous, same-speed, and reverse movement.

[0008] The stroke limit component includes a slider-rail component, a limit block, a push block, a guide rod, a push spring that are centrosymmetric about the center line of the gear, and a U-shaped block for restricting the stable meshing of the racks on both sides. The limit blocks are positioned on both sides of the base of the handling rack. A guide rod passes through the center of the limit block. A threaded section is provided on the inner end face of the guide rod, and the threaded section is screwed to the push block. The push block is fixedly connected to the sliding block. A push spring is sleeved on the outer circle of the guide rod between the limit block and the push block for applying force to the sliding block and stably providing a clamping force. The inner side surface of the U-shaped block fits against the outer end faces of the racks on both sides without force, and the inner bottom surface of the U-shaped block fits against the lower end faces of the racks on both sides without force to ensure that the racks on both sides do not disengage when meshing with the central gear. The U-shaped block is fixedly connected to the base of the handling rack.

[0009] The sliding block cooperates with the slider-rail component to be restricted to linear sliding, including a left sliding block and a right sliding block. The left sliding block is connected to one of the racks, and the lower end is connected to a gripper. The right sliding block is connected to the other rack, and the lower end is connected to the other gripper.

[0010] Furthermore, rubber pads with arc-shaped concave surfaces are provided on the opposite surfaces of the grippers on both sides to protect the outer flange of the motor coil winding to be clamped.

[0011] Furthermore, the push spring selects an appropriate elastic specification model according to the size and weight of the motor coil winding to be clamped and transported.

[0012] Furthermore, a quick-change disk is provided on the handling rack, and the quick-change disk is connected to the quick-change disk of the robotic arm to achieve free movement.

[0013] Furthermore, the servo motor provides power to cause the gear to rotate, and drives the racks on both sides to slide to both sides, causing the grippers to open. After the handling rack is positioned by the robotic arm to the motor coil winding, after the servo motor is de-energized, the racks on both sides reset, and the clamping is achieved by the force of the push spring, so as to stably clamp the motor coil winding and transport it to the next station.

[0014] Compared with the prior art, the present utility model adopts the above technical solutions and has the following technical effects:

[0015] The synchronous clamping and holding mechanism for the motor coil winding utilizes a gear-rack meshing component to evenly distribute the displacement and force of the claws on both sides, ensuring the stability and accuracy of the clamping action posture. The provided pushing spring selects a suitable elastic specification model according to the size and weight of the motor coil winding to be clamped and transported, ensuring a stable clamping force, which is practical and convenient. Description of the Drawings

[0016] Figure 1 It is the right rear view of the synchronous clamping and holding mechanism for the motor coil winding in this embodiment;

[0017] Figure 2 It is the left rear view of the synchronous clamping and holding mechanism for the motor coil winding in this embodiment;

[0018] Figure 3 It is the exploded view of the synchronous clamping and holding mechanism for the motor coil winding in this embodiment;

[0019] Figure 4 It is Figure 3 the partial enlarged view at A in

[0020] Figure 5 It is Figure 3 the partial enlarged view at B in

[0021] Wherein: 1 - servo motor, 2 - base, 3 - left sliding block, 4 - claw, 5 - rubber pad, 6 - motor coil winding, 7 - flange, 8 - pushing spring, 9 - guide rod, 10 - limit block, 11 - right sliding block, 12 - slider rail assembly, 13 - U-shaped clamping block, 14 - quick-change disk, 15 - first rack, 16 - second rack, 17 - pushing block, 18 - gear. Detailed Embodiment

[0022] Next, in combination with the description of the drawings, the technical solution of the present utility model will be clearly and completely described by way of embodiments.

[0023] Please refer to Figures 1 to 3 , this embodiment provides a synchronous clamping and holding mechanism for a motor coil winding, including a handling frame, a servo motor 1, a reducer, a gear-rack meshing component of gear 18, a stroke limiting component, a sliding block and a gripper. The gear-rack meshing component of gear 18 includes a gear 18 and racks arranged in parallel on both sides of the gear 18. The central hole of the gear 18 is in keyway fit with the output shaft of the reducer, the input shaft of the reducer is connected to the main shaft of the servo motor 1, the reducer is fixedly connected to the handling frame, and the racks on both sides are controlled by the stroke limiting component for the displacement direction and displacement distance, and are driven by the gear 18 to move synchronously, at the same speed and in the opposite direction.

[0024] Refer to Figure 3 and Figure 4, the stroke limit assembly includes a slider-rail assembly 12, a limit block 10, a push block 17, a guide rod 9, a push spring 8, and a U-shaped clamp 13 that are centrosymmetric about the center line of the gear 18. The limit block 10 is positioned on both sides of the base 2 of the handling rack. A guide rod 9 is sleeved through the center of the limit block 10. A threaded section is provided on the inner end face of the guide rod 9, and the threaded section is screwed to the push block 17. The push block 17 is fixedly connected to the sliding block. A push spring 8 is sleeved on the outer circle of the guide rod 9 between the limit block 10 and the push block 17, which is used to apply force to the sliding block and stably provide a clamping force. The inner side surface of the U-shaped clamp 13 fits against the outer end faces of the two racks without being stressed, and the inner bottom surface of the U-shaped clamp 13 fits against the lower end faces of the two racks without being stressed, so as to ensure that the two racks do not disengage when meshing with the central gear 18. The U-shaped clamp 13 is fixedly connected to the base 2 of the handling rack.

[0025] Refer to Figure 1 and Figure 3 , the sliding block cooperates with the slider-rail assembly 12 to be limited to linear sliding, including a left sliding block 3 and a right sliding block 11. The left sliding block 3 is connected to one of the racks, and the lower end is connected to the gripper. The right sliding block 11 is connected to the other rack, and the lower end is connected to the other gripper.

[0026] To ensure non-abrasive clamping of the motor coil winding 6 to be clamped and transferred, rubber pads 5 with arc-shaped concave surfaces are provided on the opposite surfaces of the two grippers 4 to protect the outer ring of the flange 7 of the clamped motor coil winding 6.

[0027] In particular, the push spring 8 is selected with an appropriate elastic specification according to the size and weight of the motor coil winding 6 to be clamped and transported, so as to ensure a stable clamping force.

[0028] Refer to Figure 1 , a quick-change disk 14 is provided on the handling rack, and the quick-change disk 14 is connected to the quick-change disk of the robotic arm to achieve free movement.

[0029] The working process is as follows:

[0030] The servo motor 1 provides power to cause the gear 18 to rotate, and drives the two racks to slide to both sides, so that the grippers 4 open. After the handling rack is driven by the robotic arm to be positioned at the motor coil winding 6, after the servo motor 1 is de-energized, the two racks reset, and the clamping force is applied with the assistance of the push spring 8, so as to stably clamp and transport the motor coil winding 6 to the next working station.

[0031] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes, modifications, substitutions, and variations can be made without departing from the gist of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A synchronous clamping and holding mechanism for a motor coil winding, comprising a handling frame, a servo motor (1), a reducer, a gear (18) and rack meshing assembly, a stroke limiting assembly, a sliding block and a gripper, characterized in that: The gear (18) and rack meshing assembly includes a gear (18) and racks arranged in parallel on both sides of the gear (18). The central hole of the gear (18) is in keyway fit with the output shaft of the reducer. The input shaft of the reducer is connected to the main shaft of the servo motor (1), and the reducer is fixedly connected to the handling frame. The displacement directions and displacement distances of the racks on both sides are controlled by the stroke limiting assembly, and they are driven by the gear (18) to move synchronously, at the same speed and in opposite directions. The stroke limiting assembly includes a slider and slide rail assembly (12), a limit block (10), a push block (17), a guide rod (9), a push spring (8) that are centrosymmetric about the center line of the gear (18), and a U-shaped block (13) that limits the stable meshing of the racks on both sides. The limit block (10) is positioned on both sides of the base (2) of the handling frame. A guide rod (9) is sleeved through the center of the limit block (10). The push block (17) is fixedly connected to the sliding block. A push spring (8) is sleeved on the outer circle of the guide rod (9) between the limit block (10) and the push block (17). The U-shaped block (13) is fixedly connected to the base (2) of the handling frame. The sliding block cooperates with the slider and slide rail assembly (12) to be limited to linear sliding. It includes a left sliding block (3) and a right sliding block (11). The left sliding block (3) is connected to one of the racks and is connected to the gripper at the lower end. The right sliding block (11) is connected to the other rack and is connected to the other gripper at the lower end.

2. The synchronous clamping and holding mechanism for the motor coil winding according to claim 1, wherein: A threaded section is provided on the inner end face of the guide rod (9), and the threaded section is screwed with the push block (17).

3. The synchronous clamping and holding mechanism for the motor coil winding according to claim 1, characterized in that: The inner side surface of the U-shaped block (13) fits against the outer end faces of the racks on both sides without force, and the inner bottom surface of the U-shaped block (13) fits against the lower end faces of the racks on both sides without force.

4. The synchronous clamping and holding mechanism for the motor coil winding according to claim 1, characterized in that: Rubber pads (5) with arc-shaped concave surfaces are provided on the opposite surfaces of the two grippers (4).

5. The synchronous clamping and holding mechanism for the motor coil winding according to claim 1, characterized in that: The push spring (8) is selected with an appropriate elastic force specification model according to the size and weight of the motor coil winding (6) to be clamped and handled.

6. The synchronous clamping and holding mechanism for the motor coil winding according to claim 1, characterized in that: A quick-change disk (14) is provided on the handling frame, and the quick-change disk (14) is connected to the quick-change disk of the robotic arm.

7. The synchronous clamping and holding mechanism for the motor coil winding according to claim 6, characterized in that: The servo motor (1) provides power to cause the gear (18) to rotate, and drives the racks on both sides to slide outwards, so that the grippers (4) open. After the handling frame is driven by the robotic arm to be positioned at the motor coil winding (6), after the servo motor (1) is de-energized, the racks on both sides reset and clamp with the assistance of the push spring (8).

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