A multi-piece composite lamination system and method of lamination

Abstract

The application discloses a kind of multiple sheet type composite lamination system and lamination method, belong to motor manufacturing technical field, including transfer truss, grabbing transfer module, multiple sheet type rotary module, composite lamination station and pressurizing height measuring module.The transfer truss is equipped with the grabbing transfer module that can move along its track;Multiple sheet type rotary module is set in different stations below track, respectively to the angle of corresponding sheet type sheet is rotated and angle identification;Composite lamination station is used to the sheet of each sheet type rotary module output composite lamination and is pressed into stator core;Pressurizing height measuring module is used to the stator semi-finished product after lamination and pressurization height measurement.Grabbing transfer module moves along track, in turn from the sheet position of each sheet type rotary module grabbing the sheet after angle rotation and identification, is transferred to composite lamination station composite lamination and pressurization, then stator semi-finished product is transferred to pressurizing height measuring module, realizes the orderly delivery of multiple different sheet type sheet, angle identification and lamination, improves lamination efficiency and precision.

Description

Technical Field

[0001] This invention belongs to the field of motor manufacturing technology, specifically relating to a multi-plate composite lamination system and lamination method, used for the composite lamination of multiple types of loose laminations in the stator core of new energy motors. Background Technology

[0002] With the rapid development of new energy vehicles and high-efficiency motors, researchers are constantly optimizing the structure of motor stator cores and designing increasingly complex cooling oil channels to improve motor efficiency and reduce heat loss during operation. To form these complex cooling oil channels and achieve specific electromagnetic properties, stator cores cannot typically be simply stacked from silicon steel sheets of a single specification. Instead, they need to be compositely stacked from various silicon steel sheets of different shapes, profiles, slot types, and oil channel structures in a predetermined order and angle.

[0003] In existing technologies, the lamination process of stator cores mainly relies on manual operation or semi-automated single-station equipment. Manual lamination has the following significant drawbacks: First, operators need to manually identify the angles of different lamination types and stack them one by one, which is inefficient and leads to fatigue from prolonged work, resulting in an increased error rate in lamination angles. Second, manual handling and stacking make it difficult to ensure the accuracy of lamination positioning and the consistency of lamination pressure, affecting the lamination quality and dimensional accuracy of the core. Third, cores of different specifications and lamination types require frequent adjustments to the process and tooling, resulting in poor production flexibility, high labor costs, and low core yield.

[0004] With the increasing complexity of cooling oil channels and the growing variety of lamination types in new energy motor stators, traditional lamination methods can no longer meet the process requirements of orderly conveying, precise angle setting, and composite lamination of various lamination types, thus restricting the production efficiency and product quality of motor stators. Therefore, there is an urgent need for an automated lamination system capable of orderly conveying, quality inspection, and composite lamination of various lamination types. Summary of the Invention

[0005] To address the problems of existing technologies where stator core lamination relies on manual labor or semi-automatic equipment, resulting in low lamination efficiency, poor lamination angle accuracy, high labor costs, and low core yield, making it difficult to meet the requirements of composite lamination processes for various lamination types, this invention provides a composite lamination system and method for various lamination types. The aim is to achieve orderly conveying, angle identification, and composite lamination of various core lamination types, effectively improving lamination efficiency and accuracy, reducing labor costs, and increasing core yield.

[0006] To solve the above-mentioned technical problems, the objective of this invention is achieved as follows: A multi-laminated lamination system for laminating multiple different lamination types into a stator core includes: a transfer truss with a movable gripping and transfer module along its track; multiple lamination type rotation modules located at different stations below the track of the transfer truss, each rotation module being used for angle rotation and angle recognition corresponding to one or more lamination types; a lamination stacking station for receiving the laminations output from each rotation module and laminating them into a stator core; and a pressure and height measurement module for pressure and height measurement of the stacked stator semi-finished product. The gripping and transfer module moves along the track of the transfer truss, sequentially gripping the laminations after angle rotation and recognition from the pick-up positions of each rotation module, and transferring them to the lamination stacking station for lamination. After stacking, the gripping and transfer module transfers the stator semi-finished product to the pressure and height measurement module for pressure and height measurement.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the plurality of sheet type rotation modules include a first loose sheet rotation module, a multi-station second loose sheet rotation module and a third loose sheet rotation module; wherein, the first loose sheet rotation module and the third loose sheet rotation module are used to perform angle rotation and angle recognition on loose sheets of at least two types; the multi-station second loose sheet rotation module is provided with a multi-station rotary table and a plurality of loose sheet storage compartments arranged in a centrally symmetrical manner on the multi-station rotary table.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the first piece rotation module and / or the third piece rotation module both include: a high-precision rotary disk, a guide rail assembly, and a piece shape angle recognition module; the guide rail assembly is used to drive the high-precision rotary disk to move along the guide rail to different piece picking positions; the piece shape angle recognition module is used to identify whether the rotation angle of the pieces on the high-precision rotary disk is accurate.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the film angle recognition module is a camera.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the multi-station second loose piece rotation module further includes a piece height measurement module, which is used to grab loose pieces with a set stacking height in the loose piece storage bin.

[0011] Based on the above scheme and as a preferred embodiment: the segmentation height measurement module includes symmetrically arranged segmentation cylinders, segmentation rotation cylinders, and a height measurement module; the height measurement module includes a pressure plate and a proximity sensor; the pressure plate is driven by a servo motor to press down and contact the topmost loose piece in the loose piece storage compartment; the proximity sensor is used to sense the pressure plate contacting the top loose piece; the segmentation cylinder actuates after the proximity sensor senses the top loose piece, inserting its segmentation pin between the stacked loose pieces to separate them; the segmentation rotation cylinder actuates, driving the segmentation cylinder and the separated loose pieces to rotate by a set angle, completing the segmentation action.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the angle by which the segmented rotary cylinder drives the segmented cylinder and the separated pieces to rotate is 180°.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the composite lamination station includes a product positioning fixture and a rotary motor; the gripping and transfer module positions the loose pieces on the product positioning fixture using positioning plates; the rotary motor rotates a preset angle after each lamination action is completed until the stator core is stacked.

[0014] Based on the above scheme and as a preferred embodiment of the above scheme: the gripping and transfer module includes a gripper, a product positioning pin, and a pressure block; the gripper is used to grip loose pieces; the product positioning pin is used to calibrate the position of the loose pieces during gripping; the pressure block presses down when the gripper releases the loose pieces, causing the loose pieces to detach from the gripping and transfer module.

[0015] Based on the above scheme and as a preferred embodiment of the above scheme: the pressure measurement module includes a servo press and a height measurement module; the servo press is used to pressurize the stator semi-finished product; the height measurement module is used to measure the height of the stator semi-finished product after pressurization and display the number of loose pieces that need to be increased or decreased.

[0016] In addition, a method for composite lamination of multiple lamination types is disclosed, including the following steps: S1: Each lamination type rotation module performs angle rotation and angle recognition on various different lamination types; S2: The grabbing and transfer module moves along the track of the transfer truss to the lamination picking position of each lamination type rotation module and grabs the laminations after angle rotation and recognition; S3: The grabbing and transfer module transfers the laminations to the composite lamination station; S4: The composite lamination station stacks the laminations of various types at a set angle into a stator core; S5: After stacking, the grabbing and transfer module transfers the stator semi-finished product to the pressure measurement module for pressure measurement.

[0017] Based on the above scheme and as a preferred scheme: In step S1, the angle rotation and angle recognition of the loose pieces include: placing the loose pieces on a high-precision turntable, the turntable driving the loose pieces to rotate by a preset angle, the camera recognizing the rotation angle, if the rotation angle is accurate, the loose pieces are picked up by the grasping and transporting module, otherwise the rotation angle is corrected and the recognition is performed again.

[0018] Based on the above scheme and as a preferred embodiment of the above scheme: In step S1, the stacked loose pieces are divided into pieces including: the pressure plate presses down to contact the loose pieces in the loose piece storage compartment, after the proximity sensor senses the top loose piece, the dividing cylinder inserts the dividing pin into the middle of the stacked loose pieces, and the dividing rotation cylinder drives the dividing cylinder to rotate 180°, and the loose pieces are divided.

[0019] Based on the above scheme and as a preferred option: In step S4, after each lamination operation is completed, the rotary motor rotates by a preset angle and repeats the lamination operation until the stator core is stacked.

[0020] The outstanding and beneficial technical effects of this invention compared to existing technologies are as follows: 1. Achieving orderly and automatic conveying and composite stacking of various sheet types: Through the collaboration of the transfer truss, the gripping and transfer module, and multiple sheet type rotation modules, automatic sorting, angle fixing, transfer, and stacking of different sheet types are achieved, eliminating the need for manual identification and stacking, significantly improving stacking efficiency. 2. Ensuring stacking angle accuracy: Each sheet type rotation module uses a high-precision rotary table combined with camera angle recognition to precisely control and verify the rotation angle of each sheet, ensuring that the sheets are stacked at the correct angle, avoiding core quality problems caused by incorrect angles, and improving stacking accuracy and core yield. 3. Achieving automatic and precise sheet separation of stacked sheets: The sheet separation and height measurement module, through the linkage of the sheet separation cylinder, the sheet separation rotation cylinder, and the height measurement module, achieves the separation and height measurement of stacked sheets one by one, ensuring reliable sheet separation without damaging the sheets, and improving the automation level of feeding. 4. Controllable Lamination Height and Inspectable Quality: Precise stacking of stator cores is achieved through product positioning fixtures and a rotary motor at the composite lamination station. A pressure-measuring module measures the height of the stacked stator semi-finished product and displays the number of laminations added or removed, facilitating timely correction and ensuring the final core height and lamination quality. 5. Flexible Production Adaptable to Multiple Core Specifications and Lamination Types: The system can be configured with multiple rotary modules corresponding to different lamination types, flexibly meeting the composite lamination process requirements of stator cores of various specifications and lamination types, reducing labor costs and improving production flexibility. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of various types of composite laminated systems provided in the embodiments of the present invention; Figure 2 This is a schematic diagram of the grabbing and transporting module provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first piece rotation module provided in an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the working principle of the segmented height measurement module provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the composite lamination station provided in an embodiment of the present invention; Figure 6 This is a flowchart illustrating various composite lamination methods provided in embodiments of the present invention.

[0022] The markings in the diagram are as follows: 1. Transfer truss; 11. Grab and transfer module; 2. First piece rotation module; 21. High-precision rotary table; 22. Guide rail assembly; 3. Multi-station second piece rotation module; 31. Piece storage bin; 32. Piece height measurement module; 321. Support; 322. Height measurement module; 323. Piece cylinder; 33. Composite stacking station; 332. Product positioning fixture; 331. Rotary motor; 3321. Product positioning piece; 4. Third piece rotation module; 5. Pressure height measurement module. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the given embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0025] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0026] like Figure 1 As shown, this embodiment of the invention provides a multi-laminated lamination system for stacking various lamination types into a stator core. The system as a whole includes a transfer truss 1, a gripping and transfer module 11, multiple lamination type rotation modules, a lamination station 33, and a pressure and height measurement module 5.

[0027] The transfer truss 1 is erected above the system, and its track extends laterally along the system to support and guide the movement of the gripping and transfer module 11. Figure 1 As shown, the transfer truss 1 is a gantry or bridge-type frame structure spanning all workstations in the system, with linear guide rails extending laterally on it. The gripping and transfer module 11 is slidably mounted on the guide rails and driven by a drive mechanism such as a servo motor in conjunction with a gear rack or synchronous belt, enabling it to move laterally back and forth along the rails between multiple workstations, used for the lateral transfer of loose wafers and stator semi-finished products after stacking. Figure 2 As shown, the gripping and transfer module 11 includes a gripper cylinder 111, a sheet-picking gripper 112, a product positioning pin 113, and a pressure block 114. The sheet-picking gripper 112 is driven by the gripper cylinder 111 and can adopt a structure in which multiple sheet-picking grippers 112 are distributed circumferentially. It can grip circular thin sheet-like loose sheets from the outside, or support the inner circle of the loose sheet from the inside to complete the gripping, so as to adapt to sheet products of different sizes. In this embodiment, the claw portion 1121 of the sheet-picking gripper 112 preferably points inward to the circumference. The product positioning pin 113 is set on the base end face below the gripper area and is distributed circumferentially. It is used to insert into the positioning hole (such as the groove of the loose sheet) corresponding to the product during gripping to realize the position calibration of the loose sheet to be gripped and ensure the gripper gripping position is accurate. The pressure block 114 is located inside the gripper or next to the positioning pin. When the gripper 112 picks up and releases the loose wafers, the pressure block 114 presses down against the upper surface of the loose wafers to ensure that the loose wafers can be detached from the gripping and transfer module 11 and reliably placed at the target station, preventing the loose wafers from shifting or falling off during the transfer process. In this embodiment, the lifting and opening / closing drive components of the gripping and transfer module 11 are integrated into its top drive section and connected to the gripper gripper and other execution components through a transition connection section; an L-shaped rigid mounting bracket is provided on the side to dock the gripping and transfer module 11 to the moving module and to improve the overall structural rigidity and reduce shaking during the transfer process.

[0028] Multiple sheet-type rotary modules are arranged sequentially at different stations below the track of the transfer truss 1. In this embodiment, the multiple sheet-type rotary modules include a first loose sheet rotary module 2, a multi-station second loose sheet rotary module 3, and a third loose sheet rotary module 4. Each sheet-type rotary module is used to handle loose sheets of one or more sheet types, performing angle rotation and angle recognition on the corresponding loose sheets to ensure that the loose sheets can be stacked at the correct angle.

[0029] like Figure 3 As shown, the first loose piece rotation module 2 is used for angle rotation and angle recognition of loose pieces to ensure that the loose pieces can be stacked at the correct angle. The first loose piece rotation module 2 includes a high-precision rotary table 21, a piece type angle recognition module, and a guide rail assembly 22.

[0030] The high-precision rotary table 21 is used to receive loose sheets and rotate them to a preset angle. During operation, the gripping and transfer module 11 grips the loose sheets and stacks them on the high-precision rotary table 21. The high-precision rotary table 21 rotates the loose sheets to a preset angle. After the sheet shape angle recognition module (in this embodiment, the camera) recognizes the rotation angle correctly, the high-precision rotary table 21 moves to the next gripping station via the guide rail assembly 22 and repeats the gripping and rotation angle actions. Finally, the gripping and transfer module 11 grips the loose sheets to the composite stacking station 33.

[0031] The film shape angle recognition module is a camera, located on one side of the high-precision rotary table 21, used to capture images of the loose films on the rotary table and identify whether the current rotation angle of the loose films is consistent with the preset angle. If the rotation angle is identified as accurate, the grasping and transfer module 11 is allowed to grasp them; if the rotation angle is deviated, the high-precision rotary table 21 is controlled to rotate again for correction until the angle is accurate.

[0032] The guide rail assembly 22 is used to drive the high-precision rotary table 21 to move along the guide rail to different chip picking positions. The guide rail assembly 22 includes a servo motor and a screw. The servo motor drives the screw to rotate, and the rotational motion is converted into linear motion through the screw and nut pair, which drives the high-precision rotary table 21 to move back and forth along the guide rail. This allows the first chip rotation module 2 to serve multiple chip picking positions in sequence, improving the parallel efficiency of chip picking and rotation.

[0033] like Figure 4 As shown, the multi-station second loose piece rotation module 3 is used for the angle rotation, height measurement and segmentation of loose pieces, and stacking. Its structure is different from that of the first loose piece rotation module 2. The multi-station second loose piece rotation module 3 includes a multi-station rotary table, a loose piece storage bin 31, a segmentation and height measurement module 32, and a composite stacking station 33.

[0034] The loose wafer storage bins 31 are symmetrically distributed on the multi-station rotary table and are used to store stacked loose wafers to be loaded. The multi-station rotary table is used to rotate the loose wafers at different angles. The wafer height measurement module 32 is used to measure the height of the stacked loose wafers in the loose wafer storage bins 31 and separate the loose wafers with the set stack height. The composite lamination station 33 is used to receive the loose wafers output from the various wafer type rotary modules and composite and stack them into stator cores.

[0035] like Figure 4As shown, the segmented height measurement module 32 is positioned above the loose chip storage bin 31 and includes a segmented cylinder 323, a segmented rotary cylinder (not shown in the figure), and a height measurement module 322. The segmented cylinder 323 is fixedly mounted on the bracket 321 and is arranged symmetrically at its center. The height measurement module 322 includes a pressure plate and a proximity sensor. The pressure plate is driven by a servo motor and can press down vertically to contact the loose chips in the loose chip storage bin 31. The pressure plate is equipped with a proximity sensor. When the pressure plate presses down and contacts the top loose chip, the proximity sensor generates a sensing signal, thereby sensing the top position of the currently stacked loose chips, and thus determining the height of the loose chips.

[0036] The slicing process is as follows: First, the pressure plate is pressed down by the servo motor and contacts the loose pieces in the loose piece storage bin 31. After the proximity sensor detects the loose pieces at the top, the slicing cylinder 323 starts to move. The slicing pin of the slicing cylinder 323 is inserted into the middle of the stacked loose pieces to separate them. Second, the slicing rotary cylinder moves and drives the bracket 321, the slicing cylinder 323 and the separated loose pieces to rotate synchronously by a preset angle. The preset angle is a counterclockwise rotation of 180°. The purpose is to completely separate the layers that need to be separated and avoid the loose pieces below being brought out during the gripping due to electrostatic adsorption or adhesion. Third, after the slicing rotary cylinder reaches the set position, the slicing height measurement module moves up to separate the stacked loose pieces. The gripping and transfer module 11 then grips the separated loose pieces to the composite stacking station 33.

[0037] By linking the slitting cylinder 323 and the slitting rotary cylinder, the stacked wafers can be reliably separated one by one. The slitting process does not damage the wafers and the positioning is accurate. It is especially suitable for high-precision silicon steel wafers that are easy to stick together and deform.

[0038] The composite lamination station 33 is used to receive the laminations output from the various lamination rotation modules and laminate them into a stator core. In this embodiment, the composite lamination station 33 is located within the multi-station second lamination rotation module 3. The pressure measurement module 5 is used to perform pressure measurement on the laminated stator semi-finished product, measuring the height of the stator to be welded and displaying the number of laminations that need to be added or removed. Figure 5As shown, the composite lamination station 33 includes a product positioning fixture 332, a rotary motor 331, and a product positioning plate 3321. The product positioning fixture is used to position and support the stator core being stacked. The gripping and transfer module 11 precisely positions the loose laminations or small stacks of loose laminations onto the product positioning fixture using positioning pins, and the product positioning plate 3321 is inserted into the slots of the loose laminations to ensure that each layer of loose laminations is coaxial and positioned at the same angle. The rotary motor is connected to the product positioning fixture. After each lamination operation is completed, the rotary motor rotates by a preset angle, causing the subsequently stacked loose laminations to rotate by a set angle relative to the previous layer. This lamination process is repeated until the stator core is stacked. By controlling the relative rotation angle between each layer of loose laminations using the rotary motor, the stator core can be stacked according to the designed inclined slot or staggered structure.

[0039] The gripping and transfer module 11 is controlled by the program and moves along the track of the transfer truss 1 to the pick-up position of the rotary module of different sheet types to grab the stacked loose sheets and transfer the loose sheets to the composite stacking station 33 for composite stacking. Finally, the loose sheets are stacked into stator semi-finished products to be welded. After the stacking is completed, the gripping and transfer module 11 transfers the stator semi-finished products to the pressure and height measurement module 5 for pressure and height measurement.

[0040] like Figure 1 As shown, the third lamination rotation module 4 has the same structure and function as the first lamination rotation module 2, and also includes a high-precision turntable, a lamination angle recognition module, and a guide rail assembly, used for the angle rotation and stacking of other lamination types. In practical applications, more lamination rotation modules with the same or similar structures as the first lamination rotation module 2 can be flexibly added according to the types of laminations required for the stator core, to meet the process requirements of composite lamination of various lamination types.

[0041] During the operation, the grabbing and transfer module 11 grabs the small stacked pieces output by the first loose piece rotation module 2, the piece height measurement module 32 (i.e., the multi-station second loose piece rotation module 3 and the third loose piece rotation module 4) to the composite lamination station 33 to complete the composite lamination of the stator core; after lamination is completed, the grabbing and transfer module 11 grabs the stator semi-finished product to the pressure measurement module 5.

[0042] like Figure 1 As shown, the pressure-pressurizing and height-measuring module 5 includes a 20-ton servo press and a height-measuring module. The 20-ton servo press applies a set pressure to the stator semi-finished product after lamination, ensuring that the laminations are tightly bonded together, eliminating interlayer gaps, and guaranteeing the core's density. The height-measuring module measures the height of the stator semi-finished product under pressure and calculates and displays the number of laminations that need to be added or removed based on the difference between the measured height and the target height. This provides a calibration basis for operators or the control system, thereby ensuring the final stator core's height accuracy and lamination quality.

[0043] The multi-laminated composite lamination system of this invention also includes a control system (not shown in the diagram). The control system is electrically connected to the gripping and transport module 11, the lamination rotation modules for each lamination type, the lamination height measurement module 32, the composite lamination station 33, and the pressure measurement module 5, and is used to coordinate and control the actions of each module. The control system can automatically control the operation of the system based on the lamination process parameters of the stator core, such as lamination type, lamination sequence, rotation angle of each layer, number of lamination layers, and target height.

[0044] The following is combined Figure 6 The complete workflow of various wafer-type composite stacking methods according to embodiments of the present invention is described.

[0045] Step S1: The rotating modules for each type of sheet perform angle rotation and angle recognition on various types of loose sheets. Specifically, the first loose sheet rotation module 2 performs angle rotation and recognition on various types of the first type of loose sheet, the multi-station second loose sheet rotation module 3 performs segmentation and height measurement on the stacked second type of loose sheets through the segmentation and height measurement module 32, and the third loose sheet rotation module 4 performs angle rotation and recognition on the third type of loose sheet.

[0046] Step S2: The grabbing and transfer module 11 moves along the track of the transfer truss 1 to the pick-up position of each piece rotation module, grabbing the loose pieces after angle rotation and recognition or the small stack of loose pieces after segmentation.

[0047] Step S3: The grabbing and transfer module 11 transfers the loose wafers to the composite stacking station 33.

[0048] Step S4: The composite lamination station 33 combines and stacks various types of laminations at a set angle to form a stator core. After each lamination operation is completed, the rotary motor rotates at a preset angle, repeating the lamination operation until the stator core is fully stacked.

[0049] Step S5: After the stacking is completed, the grabbing and transfer module 11 transfers the stator semi-finished product to the pressure and height measurement module 5, where a 20-ton servo press applies pressure and the height measurement module measures the height, displaying the number of loose pieces that need to be added or reduced, thus completing the stacking of the stator core.

[0050] Through the above process, the system can automatically complete the entire process of feeding, angle setting, slicing, transfer, composite stacking, and pressure measurement of various types of sheet metal without manual intervention, effectively improving the efficiency and accuracy of sheet metal stacking.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0052] For example, the number and types of lamination rotation modules can be flexibly set according to the actual lamination types of the stator core, and are not limited to three rotation modules; each rotation module can handle a single lamination type, or handle 2-3 lamination types like the first lamination rotation module 2 and the third lamination rotation module 4. The rotation angle of the lamination rotary cylinder is not limited to 180°, and can be set to other preset angles according to actual needs. The single rotation angle of the rotary motor can be set according to the core lamination design requirements. The press tonnage of the pressure and height measurement module and the height measurement method of the height measurement module can also be adjusted according to the actual working conditions.

[0053] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multi-laminated composite lamination system for stacking multiple different lamination types into a stator core, characterized in that, include: A transfer truss (1) is provided with a gripping and transfer module (11) that can move along its track; multiple plate-type rotation modules are set at different workstations below the track of the transfer truss (1), and each plate-type rotation module is used for angle rotation and angle recognition of one or more types of loose plates; a composite lamination workstation (33) is used to receive the loose plates output by each plate-type rotation module and compositely stack them into a stator core; a pressure measuring module (5) is used to perform pressure measuring on the stacked stator semi-finished product; the gripping and transfer module (11) moves along the track of the transfer truss (1), and sequentially grips the loose plates after angle rotation and recognition from the pick-up position of each plate-type rotation module, and transfers them to the composite lamination workstation (33) for composite stacking. After the stacking is completed, the gripping and transfer module (11) transfers the stator semi-finished product to the pressure measuring module (5) for pressure measuring.

2. The multi-plate composite stacking system according to claim 1, characterized in that, The plurality of sheet type rotation modules include a first loose sheet rotation module (2), a multi-station second loose sheet rotation module (3), and a third loose sheet rotation module (4); wherein, the first loose sheet rotation module (2) and the third loose sheet rotation module (4) are used to perform angle rotation and angle recognition on loose sheets of at least two types; the multi-station second loose sheet rotation module (3) is provided with a multi-station rotary table and a plurality of loose sheet storage bins (31) arranged in a centrally symmetrical manner on the multi-station rotary table.

3. The multi-plate composite stacking system according to claim 2, characterized in that, The first piece rotation module (2) and / or the third piece rotation module (4) both include a high-precision turntable (21), a guide rail assembly (22), and a piece shape angle recognition module; the guide rail assembly (22) is used to drive the high-precision turntable to move along the guide rail to different piece picking positions; the piece shape angle recognition module is used to identify whether the rotation angle of the pieces on the high-precision turntable is accurate.

4. The multi-plate composite stacking system according to claim 3, characterized in that, The image angle recognition module is a camera.

5. The multi-plate composite stacking system according to claim 2, characterized in that, The multi-station second loose piece rotation module (3) also includes a piece height measurement module (32), which is used to measure the height of the loose pieces stacked in the loose piece storage bin (31) and separate them.

6. The multi-plate composite stacking system according to claim 5, characterized in that, The segmented height measurement module includes a symmetrically arranged segmented cylinder (323), a segmented rotating cylinder, and a height measurement module (322). The height measurement module (322) includes a pressure plate and a proximity sensor. The pressure plate is driven by a servo motor to press down and contact the topmost loose piece in the loose piece storage bin (31). The proximity sensor is used to sense the pressure plate contacting the top loose piece. The segmented cylinder (323) operates after the proximity sensor senses the top loose piece, inserting its segmenting pin between the stacked loose pieces to separate them. The segmented rotating cylinder operates, driving the segmented cylinder (323) and the separated loose pieces to rotate by a set angle to complete the segmentation action.

7. The multi-plate composite stacking system according to claim 6, characterized in that, The segmented rotary cylinder drives the segmented cylinder (323) and the separated pieces to rotate by an angle of 180°.

8. The multi-plate composite stacking system according to claim 1, characterized in that, The composite lamination station (33) includes a product positioning fixture (332) and a rotary motor (331); the gripping and transfer module (11) positions the loose pieces on the product positioning fixture (332) using a positioning piece (3321); the rotary motor (331) rotates a preset angle after each lamination action until the stator core is stacked.

9. The multi-plate composite stacking system according to claim 1, characterized in that, The gripping and transfer module (11) includes a chip gripper (112), a product positioning pin (113), and a pressure block (114); the chip gripper (112) is used to grip loose chips; the product positioning pin (113) is used to calibrate the position of loose chips during gripping; the pressure block (114) presses down when the chip gripper (112) releases loose chips, causing the loose chips to detach from the gripping and transfer module (11).

10. The multi-plate composite stacking system according to claim 1, characterized in that, The pressurization and height measurement module (5) includes a servo press and a height measurement module; the servo press is used to pressurize the stator semi-finished product; the height measurement module is used to measure the height of the stator semi-finished product after pressurization and display the number of loose pieces that need to be increased or decreased.

11. A method for composite lamination of multiple sheet types, characterized in that, Includes the following steps: S1: The rotating modules of each lamination type perform angle rotation and angle recognition on various types of loose laminations; S2: The grabbing and transfer module moves along the track of the transfer truss to the lamination position of each lamination type rotating module and grabs the loose laminations after angle rotation and recognition; S3: The grabbing and transfer module transfers the loose laminations to the composite lamination station; S4: The composite lamination station stacks the loose laminations of various types at a set angle into a stator core; S5: After stacking, the grabbing and transfer module transfers the stator semi-finished product to the pressure measurement module for pressure measurement.

12. The multi-plate composite stacking method according to claim 11, characterized in that, In step S1, the angle rotation and angle recognition of the loose piece includes: placing the loose piece on a high-precision turntable, the turntable driving the loose piece to rotate at a preset angle, the camera recognizing the rotation angle, if the rotation angle is accurate, the loose piece is picked up by the grasping and transport module, otherwise the rotation angle is corrected and the recognition is performed again.

13. The multi-plate composite stacking method according to claim 11, characterized in that, In step S1, the process of splitting the stacked loose pieces includes: pressing down on the loose pieces in the loose piece storage compartment; after the proximity sensor detects the top loose piece, the splitting cylinder inserts the splitting pin into the middle of the stacked loose pieces; and the splitting rotation cylinder drives the splitting cylinder to rotate 180°, thus completing the splitting of the loose pieces.

14. The multi-plate composite stacking method according to claim 11, characterized in that, In step S4, after each lamination action is completed, the rotary motor rotates at a preset angle, and the lamination action is repeated until the stator core is stacked.

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