A motor stator production line clamping and fixing device

Abstract

The utility model discloses a motor stator production line clamping fixing device, including accompanying fixture, and set up in the fixed station's fixture fixed unit and clamping block drive unit. When working, the fixture fixed unit is through the cooperation of positioning column and positioning hole and is locked with the accurate positioning of accompanying fixture, and the clamping block drive unit is through the cooperation of wedge and wedge board, and the movable clamping block on accompanying fixture is driven and clamps motor stator. The device separates the positioning and clamping, realizes the high accuracy, non - injury clamping to work piece, and the structure is reliable, and the automation production efficiency has been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing, and in particular to a clamping and fixing device for a motor stator production line. Background Technology

[0002] As a core power source in modern industry, the performance of electric motors is closely related to their manufacturing processes. The motor stator is a crucial component, and its production involves multiple complex steps, including winding, coiling, shaping, insulation treatment, and testing. In automated production lines, to ensure the processing accuracy and production efficiency of each step, the stator core must be positioned and clamped quickly, stably, and reliably.

[0003] In early production models, stator fixing relied primarily on manual operation or simple mechanical clamps. For example, workpieces were clamped by manually rotating screws or operating clamping handles. This method has obvious drawbacks: First, it is labor-intensive and inefficient, making it difficult to meet the cycle time requirements of large-scale automated production; second, the control of clamping force depends entirely on the operator's experience, posing a risk of uneven or excessive clamping force, which can easily lead to stator core deformation or surface scratches, affecting product quality consistency; third, manual operation has low repeatability and positioning accuracy, failing to guarantee the precise operation of subsequent automated equipment.

[0004] With the development of industrial automation technology, various pneumatic or electric clamping devices have emerged, replacing manual operation to some extent and improving production efficiency. These devices typically use cylinders or motors to drive the grippers to hold the stator placed at the workstation. However, existing automated clamping devices still face the following technical bottlenecks in practical applications: to ensure that the stator does not shift or vibrate during processing, the clamps need to provide sufficiently large clamping force. However, existing clamps mostly use rigid contact grippers, and excessive clamping force can easily leave indentations or scratches on the outer surface of the stator core, and may even damage the core's coated insulation layer, posing a potential threat to the final electrical performance of the motor. How to achieve flexible and non-destructive clamping of the workpiece while ensuring clamping stability is a technical problem that urgently needs to be solved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a clamping and fixing device for motor stator production line. The device should have the advantages of simple structure, fast response speed, stable and reliable clamping, and the ability to avoid damage to the workpiece, so as to truly improve the efficiency of motor automated production line.

[0006] To achieve the above objectives, this application discloses a clamping and fixing device for a motor stator production line, which is installed on the production line and includes: A traveling clamp, mounted on the conveyor belt of the production line, clamps and fixes the motor stator and transports it along the production line with the operation of the conveyor belt; the traveling clamp includes a fixed plate, on which a fixed clamping block and a movable clamping block are provided. The movable clamping block includes a clamping block body and a wedge plate connected by a connecting rod. The connecting rod passes through a fixed base, and a return spring is provided on the connecting rod between the fixed base and the clamping block body. The fixed plate also has positioning holes; a clamping block driving unit, mounted on a fixed station of the production line, includes symmetrically arranged pneumatic push rods, each pneumatic push rod having a wedge block. The wedge block is configured to cooperate with the wedge plate and drive the wedge plate to move as the wedge block moves forward and backward; a clamp fixing unit, mounted on a base at a station corresponding to the clamping block driving unit, includes a movable plate. The movable plate is driven to rise and fall by a hydraulic drive cylinder. The upper end of the movable plate has positioning pins corresponding to the positioning holes one by one, and the lower end of the movable plate has a guide rod passing through a guide ring on the base.

[0007] Furthermore, the conveyor belt is driven by a drive device on the production line, and side guard plates and top guard plates are respectively provided on both sides of the conveyor belt to position the side and top surface of the fixing plate of the accompanying fixture.

[0008] Furthermore, the number of positioning pins and positioning holes is set to four sets, with the four sets of positioning pins and positioning holes respectively located at the four corners of the rectangle.

[0009] Furthermore, a support rod is provided on the rear side of the movable plate. When the movable plate rises and the positioning post engages with the positioning hole, the top end of the support rod abuts against the lower surface of the fixed plate, supporting the fixed plate.

[0010] Furthermore, the inner side of the clamping block body of the fixed clamping block and the movable clamping block is consistent with the outer surface of the motor stator.

[0011] The beneficial effects of this utility model's technical solution are: Precise positioning and high processing stability: A clamping unit positioned at a fixed station uses a hydraulic cylinder to lift a movable plate with positioning pins, ensuring precise engagement between the pins and positioning holes on the traveling clamp. This lifts the traveling clamp from the conveyor belt and securely locks it in a predetermined position in three-dimensional space, completely eliminating the impact of conveyor belt running errors and vibrations on processing accuracy. Simultaneously, support rods provide additional support points for the fixed plate, further enhancing rigidity and stability during clamping, providing a highly reliable reference for subsequent automated processing steps.

[0012] Precise and reliable clamping force control effectively protects the workpiece: This utility model innovatively adopts a separate drive design, placing the drive source (pneumatic push rod) at a fixed position rather than on the traveling fixture. Through the cooperation of wedge blocks and wedge plates, the linear motion of the pneumatic push rod is converted into the clamping action of the movable clamping block. This wedge-shaped force-enhancing structure not only generates a stable and sufficiently large clamping force to prevent workpiece displacement during processing, but also allows for precise adjustment of the clamping force by controlling the air source pressure. This avoids damage such as indentations and scratches on the outer surface or insulation layer of the stator core caused by excessive clamping force in traditional rigid fixtures, achieving non-destructive flexible clamping of the workpiece.

[0013] Simplified structure, balancing reliability and economy: The accompanying fixture itself is a passive structure, containing no pneumatic, electric, or other actuators, and consists only of mechanical components. Therefore, its structure is simple, lightweight, has a low failure rate, and is easy to maintain, reducing the overall manufacturing and maintenance costs of the production line. By centralizing the complex drive and precision positioning units at a fixed workstation, it achieves an optimal balance between functionality and cost, demonstrating high practical value and economic benefits. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a clamping and fixing device for a motor stator production line according to the present invention.

[0016] Figure 2 This is a schematic diagram of the accompanying clamp in this utility model.

[0017] Figure 3 This is a structural schematic diagram of the accompanying clamp in this utility model from another perspective.

[0018] Figure 4 This is a schematic diagram showing the state of the clamping and fixing device in use in this utility model.

[0019] In the diagram: 1-Production line; 11-Conveyor belt; 12-Drive unit; 13-Side guard plate; 14-Upper guard plate; 2-Following clamp; 21-Fixed plate; 22-Fixed clamping block; 23-Modible clamping block; 231-Connecting rod; 232-Clamping block body; 233-Wedge plate; 234-Fixed seat; 235-Returning spring; 3-Motor stator; 4-Clamping block drive unit; 41-Pneumatic push rod; 42-Wedge block; 5-Clamping fixing unit; 51-Modible plate; 52-Hydraulic drive cylinder; 53-Positioning column; 54-Guide rod; 55-Support rod; 6-Base; 61-Guide ring; 100-Robot arm. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figures 1 to 3 This utility model discloses a clamping and fixing device for a motor stator production line, which is used to accurately position and non-destructively clamp a motor stator 3 on an automated production line 1.

[0022] like Figure 1 As shown, a conveyor belt 11 driven by a drive unit 12 is laid on the production line 1. Multiple accompanying clamps 2 carrying motor stators 3 are placed on the conveyor belt 11 and transported forward together with it. In order to provide initial guidance and limit the movement of the accompanying clamps 2, side guard plates 13 are provided on both sides of the conveyor belt 11, and an upper guard plate 14 is provided on the top to ensure that the posture of the accompanying clamps 2 is basically stable during transportation.

[0023] At a specific processing station on production line 1, a base 6 is provided, on which a clamping block driving unit 4 and a clamp fixing unit 5 are integrated.

[0024] The accompanying clamp 2 is the core carrier of this device. It mainly consists of a fixed plate 21 as its base. A fixed clamping block 22 is firmly installed on one side of the fixed plate 21, and a movable clamping block 23 is installed on the other side through a sliding mechanism. The movable clamping block 23 consists of a clamping block body 232 and a wedge plate 233, which are rigidly connected by a connecting rod 231. The connecting rod 231 is slidably inserted into a fixed seat 234 fixed on the fixed plate 21. A return spring 235 is sleeved on the connecting rod 231 between the fixed seat 234 and the clamping block body 232. When no external force is applied, the return spring 235 is in a naturally extended state, pushing the movable clamping block 23 to its minimum opening, facilitating the fixation of the motor stator 3. The inner surfaces of the clamping block bodies 232 of the fixed clamping block 22 and the movable clamping block 23 are machined into arc surfaces that match the outer circle of the motor stator 3 to increase the contact area and distribute the clamping pressure. Four positioning holes 24 are respectively opened at the four corners of the bottom of the fixing plate 21.

[0025] The fixture fixing unit 5 and the clamping block driving unit 4 are mounted on the base 6 of the workstation. The fixture fixing unit 5 includes a movable plate 51 that can be vertically lifted and lowered by a hydraulic drive cylinder 52. The upper surface of the movable plate 51 is provided with four positioning pins 53 that correspond perfectly to the positioning holes 24. The lower surface is connected to a guide rod 54, which passes through a guide ring 61 on the base 6 to ensure the smoothness and accuracy of the lifting and lowering process of the movable plate 51. A support rod 55 is also provided on the rear side of the movable plate 51.

[0026] The clamping block drive unit 4 includes two pneumatic push rods 41 symmetrically arranged on both sides of the production line 1, with wedge blocks 42 installed at the ends of the push rods. The slope angle of the wedge block 42 is precisely matched with the slope angle of the wedge plate 233 on the movable clamping block 23.

[0027] The working process of this device is as follows: Feed and coarse positioning: The accompanying fixture 2 carries the motor stator 3 to be processed and moves along the conveyor belt 11 to the designated station. The side guard plate 13 and the upper guard plate 14 ensure that it roughly reaches the correct position.

[0028] Precise Positioning and Locking: After the station sensor detects that the traveling fixture 2 has reached its position, the control system activates the fixture fixing unit 5. The hydraulic drive cylinder 52 extends, pushing the movable plate 51 to rise smoothly. The four positioning pins 53 on the movable plate 51 are precisely inserted into the four positioning holes 24 at the bottom of the fixing plate 21 of the traveling fixture 2, while the top of the support rod 55 abuts against the lower surface of the fixing plate 21. This action lifts the traveling fixture 2 a short distance off the conveyor belt 11 and locks it rigidly, completely eliminating the positional uncertainty caused by the conveyor belt and achieving high-precision spatial positioning.

[0029] Clamping the workpiece: After the accompanying fixture 2 is locked, the control system activates the clamping block drive unit 4. The pneumatic push rods 41 on both sides extend synchronously, and the wedge blocks 42 at their front ends move forward and contact the wedge plates 233 on the movable clamping block 23. As the wedge blocks 42 continue to advance, their inclined surfaces push the wedge plates 233 outwards, thereby causing the entire movable clamping block 23 to overcome the spring force of the return spring 235 and move away from the fixed clamping block 22. At this time, other transfer equipment, such as those attached... Figure 4 The robot arm 100 shown transports the motor stator 3 between the movable clamping block 23 and the fixed clamping block 22. Subsequently, the pneumatic push rod 41 of the clamping block drive unit 4 retracts, the wedge block 42 retracts to release the wedge plate 233, and under the elastic force of the return spring 235, the movable clamping block 23 returns to its original position, finally firmly clamping the motor stator 3. This ensures secure clamping without damaging the workpiece.

[0030] Reset and transfer: Subsequently, the hydraulic drive cylinder 52 retracts, causing the movable plate 51 to descend and releasing the positioning of the accompanying fixture 2. The entire process is repeated cyclically.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 clamping and fixing device for a motor stator production line, disposed on the production line (1), characterized in that... include: A traveling clamp (2) is set on the conveyor belt (11) of the production line (1) to clamp and fix the motor stator (3) and transport it on the production line (1) as the conveyor belt (11) moves; the traveling clamp (2) includes a fixed plate (21), on which a fixed clamping block (22) and a movable clamping block (23) are provided. The movable clamping block (23) includes a clamping block body (232) and a wedge plate (233) connected by a connecting rod (231). The connecting rod (231) passes through a fixed seat (234). A return spring (235) is provided on the connecting rod (231) between the fixed seat (234) and the clamping block body (232). The fixed plate (21) is also provided with a positioning hole (24); the clamping block drive unit ( 4) Set on a fixed work station on the production line, including symmetrically arranged pneumatic push rods (41), with a wedge block (42) on the pneumatic push rod (41). The wedge block (42) is configured to cooperate with the wedge plate (233) and drive the wedge plate (233) to move with the advance and retreat of the wedge block (42); clamp fixing unit (5), set on the base (6) of the work station corresponding to the clamp driving unit (4), including a movable plate (51). The movable plate (51) is driven to lift by a hydraulic drive cylinder (52). The upper end of the movable plate (51) is provided with a positioning post (53) corresponding to the positioning hole (24), and the lower end of the movable plate (51) is provided with a guide rod (54) passing through the guide ring (61) on the base (6).

2. The clamping and fixing device for a motor stator production line according to claim 1, characterized in that: The conveyor belt (11) is driven by the drive device (12) on the production line (1). The two sides of the conveyor belt (11) are respectively provided with side guard plates (13) and upper guard plates (14), which respectively position the side and upper surface of the fixing plate (21) of the accompanying clamp (2).

3. The clamping and fixing device for a motor stator production line according to claim 1, characterized in that: The number of positioning posts (53) and positioning holes (24) is set to four sets, and the four sets of positioning posts (53) and positioning holes (24) are respectively set at the four corners of the rectangle.

4. The clamping and fixing device for a motor stator production line according to claim 1, characterized in that: A support rod (55) is also provided on the rear side of the movable plate (51). When the movable plate rises and the positioning column (53) cooperates with the positioning hole (24), the top end of the support rod (55) abuts against the lower surface of the fixed plate (21) to support the fixed plate (21).

5. The clamping and fixing device for a motor stator production line according to claim 1, characterized in that: The inner side of the clamp body (232) of the fixed clamp (22) and the movable clamp (23) is consistent with the outer surface of the motor stator (3).

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