Rotor welding apparatus

Abstract

The application relates to the field of motor production equipment, and provides a rotor welding device, which comprises a linear conveying device for linearly conveying a motor rotor, an insulation treatment device for removing the insulation layer of the motor rotor, a clamping mechanism for clamping the motor rotor, an opening and closing device for driving the clamping mechanism, a rotor feeding device for transferring the motor rotor to the clamping mechanism, a resistance feeding device for supplying a pressure-sensitive resistor and transferring the pressure-sensitive resistor to the motor rotor, a welding device for welding to form a welding product, a product discharging device for transferring the welding product to the linear conveying device, and a conveying disc configured to drive the clamping mechanism to rotate circumferentially and sequentially move to the rotor feeding device, the resistance feeding device, the welding device and the product discharging device. The application guarantees automatic connection of each process, reduces manual participation links, effectively reduces the dependence on manual work, and is favorable for improving the production efficiency and the yield in the process of motor rotor welding.

Description

Technical Field

[0001] This application relates to the field of motor manufacturing equipment technology, and in particular to a rotor welding device. Background Technology

[0002] With the development of motor manufacturing technology, the requirements for welding efficiency and precision between rotors and varistors are becoming increasingly higher.

[0003] In related technologies, traditional motor rotor varistor welding is mostly done manually, which has problems such as low production efficiency, poor welding quality consistency, high dependence on worker operating skills, and easy to produce incomplete welds or damage to products.

[0004] Therefore, there is an urgent need for a rotor welding equipment to reduce the reliance on manual labor in the welding process, thereby improving production efficiency and yield. Summary of the Invention

[0005] This application provides a rotor welding device to solve the problem that the traditional motor rotor varistor welding in the prior art is mostly done manually, which is not conducive to improving production efficiency and yield.

[0006] This application provides a rotor welding apparatus, comprising: a linear conveying device for conveying a motor rotor along a linear direction; an insulation treatment device for removing the insulation layer of the motor rotor on the linear conveying device; a clamping mechanism for releasably clamping the motor rotor; an opening and closing device for driving the clamping mechanism to perform clamping or releasing actions; a rotor loading device for transferring the motor rotor on the linear conveying device to the clamping mechanism; a resistor loading device for supplying a varistor and transferring the varistor to the motor rotor located on the clamping mechanism; a welding device for welding the motor rotor and the varistor on the clamping mechanism to form a welded product; a product unloading device for transferring the welded product to the linear conveying device; and a conveyor tray connected to the clamping mechanism, the conveyor tray being configured to drive the clamping mechanism to rotate circumferentially and move sequentially to the rotor loading device, the resistor loading device, the welding device, and the product unloading device.

[0007] According to one embodiment of this application, the clamping mechanism includes: a positioning cylinder, the top of which is provided with a positioning hole for insertion and engagement with the motor rotor; and a clamping member, rotatably connected to the positioning cylinder, the clamping member being configured to rotate and clamp or release the motor rotor under the drive of the opening and closing device.

[0008] According to one embodiment of this application, the clamping member includes: a connecting shaft rotatably passing through the positioning cylinder and arranged parallel to the positioning hole; a clamping plate movably disposed on the upper side of the positioning cylinder and fixedly connected to the upper end of the connecting shaft; and a driving arm located below the clamping plate and disposed opposite to the clamping plate, the driving arm being fixedly connected to the lower end of the connecting shaft, and the driving arm being configured to reciprocate under the drive of the opening and closing device.

[0009] According to one embodiment of this application, two clamping members are symmetrically arranged about a plane passing through the center line of the positioning hole, and the two clamping members are configured to rotate in opposite directions under the drive of the opening and closing device.

[0010] According to one embodiment of this application, the clamping member further includes a synchronizing gear, which is fixedly connected to the connecting shaft, and the synchronizing gears of the two clamping members mesh with each other.

[0011] According to one embodiment of this application, the opening and closing device includes: an opening drive mechanism, including a first telescopic member and a first actuator, wherein the first telescopic member is used to drive the first actuator to reciprocate, and the opening drive mechanism is configured to push the drive arm to swing in a first direction when the first telescopic member drives the first actuator to move forward, and to disengage from the drive arm when the first telescopic member drives the first actuator to retract; and a closing drive mechanism, including a second telescopic member and a second actuator, wherein the second telescopic member is used to drive the second actuator to reciprocate, and the closing drive mechanism is configured to push the drive arm to swing in a second direction when the second telescopic member drives the second actuator to move forward, and to disengage from the drive arm when the second telescopic member drives the second actuator to retract, wherein the second direction is opposite to the first direction.

[0012] According to one embodiment of this application, the welding apparatus includes: a pre-pressing mechanism for applying pressure and preheating the motor rotor and the varistor on the clamping mechanism to achieve pre-fixation; and at least one welding mechanism for welding the pre-fixed motor rotor and the varistor to form a welded product.

[0013] According to one embodiment of this application, it further includes: a testing device disposed on one side of the linear conveyor and located downstream of the product unloading device in the conveying direction of the linear conveyor, the testing device being used to perform electrical performance testing on the welded product; and a rejection device disposed on one side of the linear conveyor and located downstream of the testing device in the conveying direction of the linear conveyor, the rejection device being used to move defective products confirmed by the testing device to a defective product storage station.

[0014] According to one embodiment of this application, it further includes: a cleaning device located downstream of the product unloading device in the conveying direction of the conveyor tray, the cleaning device being used to clean the clamping mechanism.

[0015] According to one embodiment of this application, the rotor feeding device includes: a first angle adjustment mechanism disposed between the linear conveying device and the conveying tray, the first angle adjustment mechanism being used to drive the motor rotor to rotate a first preset angle; and a rotor transport mechanism located on one side of the linear conveying device, the rotor transport mechanism being used to move the motor rotor on the linear conveying device to the first angle adjustment mechanism, and to move the motor rotor on the first angle adjustment mechanism to the clamping mechanism.

[0016] The rotor welding equipment provided in this application, during operation, first places the motor rotor on a linear conveyor and passes it along a linear direction through an insulation treatment device to remove the insulation layer, preparing it for subsequent welding. Then, a rotor loading device transfers the treated rotor to a clamping mechanism, which is reliably clamped by an opening and closing device. A conveyor plate connects to the clamping mechanism and drives its circumferential rotation, moving sequentially to a resistor loading device, a welding device, and a product unloading device. At the resistor loading device, a varistor is transferred to the clamped motor rotor; at the welding device, the rotor and the varistor are welded to form a welded product; at the product unloading device, the welded product is transferred back to the linear conveyor, thus completing the entire welding process. In this continuous automated process, the linear conveyor achieves long-distance rotor transport and insulation treatment, and the conveyor plate, through circumferential rotation, sequentially delivers the clamping mechanism to each station, eliminating the need for multiple disassemblies and repositionings after loading. The stable clamping of the clamping mechanism and the sequential rotation of the conveyor plate are sufficient to complete resistor loading, welding, and unloading in sequence. This application ensures automatic connection of each process, reduces manual intervention, effectively reduces dependence on manual labor, and helps improve production efficiency and yield in the motor rotor welding process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a rotor welding device provided in one embodiment of this application;

[0019] Figure 2This is a schematic diagram of the cooperative structure of a linear conveying device, a handling device, and an insulation treatment device in a rotor welding equipment according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of a rotor feeding device in a rotor welding equipment according to an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the structure of a product unloading device in a rotor welding equipment according to an embodiment of this application;

[0022] Figure 5 This is a perspective view of a conveyor plate in a rotor welding device according to an embodiment of this application;

[0023] Figure 6 This is a perspective view of a conveyor plate in a rotor welding device according to an embodiment of this application, taken from another angle.

[0024] Figure 7 This is a perspective view of a clamping mechanism in a rotor welding device according to an embodiment of this application;

[0025] Figure 8 This is a schematic diagram of the internal structure of a clamping mechanism in a rotor welding device according to an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the opening and closing device in a rotor welding equipment according to an embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the structure of a resistance feeding device in a rotor welding equipment according to an embodiment of this application;

[0028] Figure 11 This is a schematic diagram of the structure of a welding device in a rotor welding equipment according to an embodiment of this application;

[0029] Figure 12 This is a schematic diagram of the welding mechanism in a rotor welding device according to an embodiment of this application;

[0030] Figure 13 This is a schematic diagram of the structure of a rejection device and a testing device in a rotor welding equipment according to an embodiment of this application;

[0031] Figure 14 This is a schematic diagram of the structure of a cleaning device in a rotor welding equipment according to an embodiment of this application;

[0032] Figure label:

[0033] 100. Linear conveyor device; 110. First linear conveyor section; 120. Second linear conveyor section; 130. Front-end shifting drive; 140. Rear-end shifting drive; 150. Fixture;

[0034] 200. Insulation treatment device;

[0035] 300. Clamping mechanism; 310. Positioning cylinder; 311. Positioning hole; 320. Clamping component; 321. Connecting shaft; 322. Clamping plate; 323. Drive arm; 324. Synchronous gear;

[0036] 400. Opening / closing device; 410. Opening drive mechanism; 411. First telescopic member; 412. First actuating end; 420. Closing drive mechanism; 421. Second telescopic member; 422. Second actuating end;

[0037] 500. Rotor feeding device; 510. First angle adjustment mechanism; 520. Rotor handling mechanism; 521. Second mounting frame; 522. Second translation drive component; 523. Third mounting frame; 524. Second telescopic arm; 525. Second gripper; 526. Third gripper;

[0038] 600. Resistance feeding device; 610. Vibratory feeder; 620. Cylinder pushing mechanism; 630. Annular vacuum suction cup;

[0039] 700. Welding device; 710. Pre-pressing mechanism; 720. Welding mechanism; 721. Welding actuator; 722. Fourth mounting bracket; 723. Third translation drive component; 724. Fifth mounting bracket; 725. Third telescopic arm; 726. Fourth telescopic arm; 727. Welding torch fixing component; 728. Solder feeding tube; 729. Solder wire conveying mechanism;

[0040] 800. Product unloading device; 810. Second angle adjustment mechanism; 820. Product handling mechanism;

[0041] 900. Conveyor tray; 910. Turntable body; 920. Turntable drive motor; 930. Synchronous belt assembly; 940. Gearbox;

[0042] 1000, conveying device; 1010, first mounting bracket; 1020, first gripper; 1030, first telescopic arm; 1040, first lifting drive component; 1050, first translation drive component;

[0043] 1100. Testing equipment;

[0044] 1200. Rejection device; 1210. Defective product storage station;

[0045] 1300. Cleaning device;

[0046] 1400. Equipment frame; 1410. Suspension and fixing bracket. Detailed Implementation

[0047] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0048] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0050] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] The following is combined Figure 1 This application describes a rotor welding apparatus according to embodiments of the present application. In some embodiments, the rotor welding apparatus includes a linear conveyor 100, an insulation treatment device 200, a clamping mechanism 300, an opening and closing device 400, a rotor loading device 500, a resistor loading device 600, a welding device 700, a product unloading device 800, and a conveyor tray 900. The linear conveyor 100 is used to convey a motor rotor in a linear direction. The insulation treatment device 200 is used to remove the insulation layer from the motor rotor on the linear conveyor 100. The clamping mechanism 300 is used to releasably clamp the motor rotor. The opening and closing device 400 is used to drive the clamping mechanism 300 to perform clamping or releasing actions. The rotor loading device 500 is used to transfer the motor rotor from the linear conveyor 100 to the clamping mechanism 300. The resistor loading device 600 is used to supply a varistor and transfer the varistor to the motor rotor located on the clamping mechanism 300. The welding device 700 is used to weld the motor rotor and the varistor on the clamping mechanism 300 to form a welded product. The product unloading device 800 is used to transfer the welded products to the linear conveyor device 100. The conveyor plate 900 is connected to the clamping mechanism 300, and the conveyor plate 900 is configured to drive the clamping mechanism 300 to rotate circumferentially and move sequentially to the rotor loading device 500, the resistance loading device 600, the welding device 700 and the product unloading device 800.

[0053] For example, the linear conveyor 100 can be a belt conveyor or a chain conveyor. The motor rotor is placed on the conveyor belt or in a carrier of the conveyor chain and moves along a preset linear trajectory. An insulation treatment device 200 is located at a certain position on the linear conveyor 100. When the motor rotor passes by, the insulation treatment device 200 removes the insulation layer on the area to be welded on the motor rotor by mechanical scraping or laser ablation to ensure the electrical contact performance of subsequent welding. A clamping mechanism 300 is mounted on a conveyor disk 900, which is a disc or turntable that can rotate around a central axis. The clamping mechanism 300 is fixed to the edge area of ​​the conveyor disk 900. When the conveyor disk 900 rotates, it drives the clamping mechanism 300 to pass through each station sequentially. The rotor loading device 500 removes the insulated motor rotor from the linear conveyor 100 and places it into the clamping mechanism 300. At this time, the opening and closing device 400 drives the clamping mechanism 300 to close to clamp the motor rotor. Subsequently, the conveyor plate 900 rotates, delivering the clamping mechanism 300 holding the motor rotor to the resistor feeding device 600, which places the varistor at the predetermined welding position on the motor rotor. The conveyor plate 900 continues to rotate to the welding device 700, where the welding device 700 welds the motor rotor and the varistor to form a welded product. The conveyor plate 900 then rotates to the product unloading device 800, which removes the welded product from the clamping mechanism 300 and transfers it back to the linear conveyor 100 for subsequent processes. Before product unloading, the opening and closing device 400 drives the clamping mechanism 300 to release the welded product.

[0054] Through the combined layout of the linear conveyor 100 and the conveyor plate 900, the linear conveyor 100 is responsible for the long-distance transport and insulation of the motor rotor, while the conveyor plate 900 achieves rapid switching between multiple workstations through circumferential rotation. This ensures that the motor rotor is stably held by the same clamping mechanism 300 throughout the entire process from loading, placing the varistor, welding to unloading, eliminating the need for repeated disassembly and repositioning between different workstations. This effectively reduces the number of workpiece handling operations and positioning errors, improves the smoothness of process connections and the consistency of production rhythm, thereby solving the problems of low production efficiency, poor welding quality consistency, and high dependence on worker skills in manual welding, and contributing to improved overall production efficiency and product yield.

[0055] Combination Figure 2In some embodiments, the linear conveying device 100 includes a first linear conveying section 110, a second linear conveying section 120, a front-end shifting drive 130, and a rear-end shifting drive 140. The first linear conveying section 110 and the second linear conveying section 120 are both linear conveying structures such as belt conveyors or chain conveyors. The first linear conveying section 110 and the second linear conveying section 120 are arranged in parallel, with opposite conveying directions, and are aligned perpendicular to the conveying direction. The first linear conveying section 110 and the second linear conveying section 120 are provided with carriers for carrying motor rotors. The front-end shifting drive 130 is located near the beginning of the first linear conveying section 110 in the conveying direction, i.e., near the end of the second linear conveying section 120 in the conveying direction. The front-end shifting drive 130 is used to drive the fixture 150 located at the end of the second linear conveying section 120 in the conveying direction to move to the beginning of the first linear conveying section 110 in the conveying direction. The rear-end shifting drive 140 is located at the end of the first linear conveying section 110 in the conveying direction, i.e., the beginning of the second linear conveying section 120 in the conveying direction. The rear-end shifting drive 140 is used to drive the fixture 150 located at the end of the first linear conveying section 110 in the conveying direction to move to the beginning of the second linear conveying section 120 in the conveying direction.

[0056] For example, support plates are connected between the starting end of the first linear conveyor section 110 in the conveying direction and the ending end of the second linear conveyor section 120 in the conveying direction, and between the ending end of the first linear conveyor section 110 in the conveying direction and the starting end of the second linear conveyor section 120 in the conveying direction. The front-end shifting drive 130 is a telescopic structure such as a cylinder or telescopic motor located on the side of the second linear conveyor section 120 away from the first linear conveyor section 110. The movable end of the front-end shifting drive 130 faces the first linear conveyor section 110. When the movable end of the front-end shifting drive 130 extends, it pushes the fixture 150 at the end of the second linear conveyor section 120 in the conveying direction to the starting end of the first linear conveyor section 110 in the conveying direction. When the movable end of the front-end shifting drive 130 retracts, it avoids the movement of the fixture 150. The rear-end shifting drive 140 is a telescopic structure such as a cylinder or telescopic motor located on the side of the first linear conveying section 110 away from the first linear conveying section 110. The movable end of the rear-end shifting drive 140 faces the second linear conveying section 120. When the movable end of the rear-end shifting drive 140 extends, it pushes the fixture 150 at the end of the conveying direction of the first linear conveying section 110 to the beginning of the conveying direction of the second linear conveying section 120. When the movable end of the rear-end shifting drive 140 retracts, it avoids the movement of the fixture 150.

[0057] In this embodiment, the linear conveying device 100 enables the carrier to be used cyclically between the first linear conveying section 110 and the second linear conveying section 120 without the need for manual retrieval of empty carriers, thus improving the continuity of conveying. At the same time, by separating the loading area and the unloading area through two layers or two parallel conveying sections, the interference between loading and unloading operations can be avoided, and it is convenient to arrange multiple workstations such as insulation treatment, testing, and rejection during the conveying process, thereby improving the space utilization and production efficiency of the equipment.

[0058] Combination Figure 2 Optionally, the rotor welding equipment also includes a conveying device 1000, which is used to transfer the motor rotor onto the linear conveyor 100 and to remove the welded products from the linear conveyor 100.

[0059] For example, the conveying device 1000 includes a first mounting frame 1010, a first gripper 1020, a first telescopic arm 1030, a first lifting drive 1040, and a first translation drive 1050. The first mounting frame 1010 is fixed to the equipment frame 1400 and is located near the starting end of the conveying direction of the first linear conveying section 110 and the end of the conveying direction of the second linear conveying section 120. The first translation drive 1050 is horizontally arranged on the first mounting frame 1010 and parallel to the conveying directions of the first linear conveying section 110 and the second linear conveying section 120. The output end of the first translation drive 1050 is connected to the first lifting drive 1040, and the output end of the first lifting drive 1040 is connected to the first telescopic arm 1030. The extension direction of the first telescopic arm 1030 is perpendicular to the conveying directions of the first linear conveying section 110 and the second linear conveying section 120. The output end of the first telescopic arm 1030 is connected to the first gripper 1020, which is used to grip the motor rotor or welded products.

[0060] For example, the first mounting frame 1010 is a frame structure welded from aluminum alloy profiles or steel plates. Its bottom is fixed to the equipment frame 1400, and its upper part is provided with a mounting surface for mounting the first translation drive component 1050. The first mounting frame 1010 is generally door-shaped or L-shaped, providing a stable support foundation for other components, preventing shaking during operation, and ensuring the relative positional accuracy between each drive component and actuator.

[0061] The first translation drive 1050 is either a rodless cylinder or a linear module. The rodless cylinder includes a cylinder barrel and a slide, with the slide reciprocating linearly along the cylinder barrel. The linear module includes a base, a lead screw, a nut, and a motor; the motor drives the lead screw to rotate, and the nut moves linearly along the lead screw. The first translation drive 1050 is horizontally mounted on the first mounting frame 1010, and its direction of movement is parallel to the conveying direction of the linear conveyor 100. The output end of the first translation drive 1050 is connected to the first lifting drive 1040, which drives the first lifting drive 1040 and its lower first telescopic arm 1030 and first gripper 1020 to move horizontally between the gripping station and the placement station, thus realizing the horizontal transport of the motor rotor or welded product.

[0062] The first lifting drive component 1040 is either a slide cylinder or an electric push rod. The slide cylinder includes a cylinder body and a slide, with the slide moving up and down relative to the cylinder body. The electric push rod includes a motor, a lead screw, and a push rod; the motor drives the lead screw to rotate, and the push rod performs linear extension and retraction. The first lifting drive component 1040 is fixedly installed at the output end of the first translation drive component 1050. The output end of the first lifting drive component 1040 is connected to the first telescopic arm 1030, used to drive the first telescopic arm 1030 and its lower end's first gripper 1020 to rise or fall, to approach or move away from the motor rotor or welded product located on the linear conveyor 100, avoiding interference with other components of the equipment during horizontal movement.

[0063] The first telescopic arm 1030 is either a double-rod cylinder or a guide rod cylinder. A double-rod cylinder has two parallel piston rods, providing good torsional resistance; a guide rod cylinder has a guide rod on the side of the piston rod, ensuring smooth movement. The upper end of the first telescopic arm 1030 is fixedly connected to the output end of the first lifting drive component 1040. The telescopic direction of the first telescopic arm 1030 is perpendicular to the conveying direction of the linear conveyor 100 and is horizontally positioned, meaning the first telescopic arm 1030 extends towards the side of the linear conveyor 100. The output end of the first telescopic arm 1030 is connected to the first gripper 1020, used to drive the first gripper 1020 to extend horizontally above or below the motor rotor or the welded product, or to retract horizontally to avoid other movements.

[0064] The first gripper 1020 is either a pneumatic parallel gripper or a pneumatic angular gripper. The pneumatic parallel gripper includes two opposing gripping fingers that move in opposite directions along a straight line under the drive of a cylinder. The pneumatic angular gripper includes two gripping arms that swing in opposite directions around their respective axes under the drive of a cylinder. The first gripper 1020 is mounted on the output end of the first telescopic arm 1030. Flexible pads, made of polyurethane or silicone, are provided on opposite sides of the two gripping fingers or arms of the first gripper 1020. The first gripper 1020 is used to grip the outer cylindrical surface or end face of a motor rotor or welded product. The flexible pads increase friction, preventing the workpiece from slipping during gripping and avoiding damage to the workpiece surface.

[0065] By linking the first gripper 1020, the first telescopic arm 1030, the first lifting drive component 1040, and the first translation drive component 1050, automatic picking and placing of motor rotors and welded products can be achieved, replacing manual operation and improving the efficiency and consistency of loading and unloading.

[0066] When a motor rotor needs to be fed into the linear conveyor 100, the first translation drive 1050 drives the first lifting drive 1040 to move directly above the motor rotor to be gripped. The first lifting drive 1040 then drives the first telescopic arm 1030 to descend, and the first telescopic arm 1030 drives the first gripper 1020 to move to the position of the motor rotor. The first gripper 1020 opens and grips the motor rotor. Subsequently, the first lifting drive 1040 drives the first telescopic arm 1030 to rise, and the first translation drive 1050 drives the first lifting drive 1040 to move above the starting end of the conveying direction of the first linear conveying section 110 of the linear conveyor 100. The first lifting drive 1040 then drives the first telescopic arm 1030 to descend again, and the first gripper 1020 releases the motor rotor, placing the motor rotor on the conveying surface of the first linear conveying section 110. On the carrier at the starting end of the conveying direction; when it is necessary to remove the welded product from the linear conveyor 100, the first translation drive 1050 drives the first lifting drive 1040 to move to directly above the welded product at the end of the conveying direction of the second linear conveying section 120 of the linear conveyor 100, the first lifting drive 1040 drives the first telescopic arm 1030 to descend, the first telescopic arm 1030 drives the first gripper 1020 to move to the position of the welded product, the first gripper 1020 opens and grabs the welded product, then the first lifting drive 1040 drives the first telescopic arm 1030 to rise, the first translation drive 1050 drives the first lifting drive 1040 to move to above the external receiving station, the first lifting drive 1040 drives the first telescopic arm 1030 to descend, the first gripper 1020 releases the welded product, and the unloading is completed.

[0067] In this embodiment, the same set of handling device 1000 is used to simultaneously handle the tasks of loading the motor rotor and unloading the welded products. This simplifies the equipment structure, reduces manufacturing costs, and decreases the number of handling mechanisms and the space occupied. At the same time, one device can complete bidirectional handling, making the control logic simpler, debugging and maintenance more convenient, and improving the utilization rate of the handling device 1000. In addition, the loading and unloading share the same docking position of the linear conveyor device 100, reducing workpiece handover links and positioning errors, which is conducive to achieving matching of production cycle and modular design of equipment.

[0068] Combination Figure 3 In some embodiments, the rotor loading device 500 includes a first angle adjustment mechanism 510 and a rotor transport mechanism 520. The first angle adjustment mechanism 510 is disposed between the linear conveyor 100 and the conveyor plate 900, and is used to drive the motor rotor to rotate a first preset angle. The rotor transport mechanism 520 is located on one side of the linear conveyor 100, and is used to move the motor rotor on the linear conveyor 100 to the first angle adjustment mechanism 510, and to move the motor rotor on the first angle adjustment mechanism 510 to the clamping mechanism 300.

[0069] For example, after the motor rotor on the linear conveyor 100 has undergone insulation treatment, the circumferential angle position of its area to be welded differs from the required angle. The rotor transport mechanism 520 first removes the motor rotor from the linear conveyor 100 and places it on the first angle adjustment mechanism 510. The first angle adjustment mechanism 510 includes a rotating platform and an angle sensor. The rotating platform clamps the lower shaft of the motor rotor and drives the motor rotor to rotate according to a preset first preset angle value, so that its area to be welded is aligned with a specific direction, such as towards the opening direction of the clamping plate 322 of the clamping mechanism 300 or towards the material feeding direction of the subsequent resistance feeding device 600. The first preset angle is determined by the model of the motor rotor and the distribution of the welding points. After the angle adjustment is completed, the rotor transport mechanism 520 then removes the motor rotor from the first angle adjustment mechanism 510 and places it in the clamping mechanism 300 on the conveyor tray 900. Since the motor rotor has already undergone angle pre-adjustment before loading, when the clamping mechanism 300 clamps the motor rotor, the welding points on the motor rotor are already in a precise position that facilitates the placement of the varistor by the resistance loading device 600. This eliminates the need for additional angle adjustment devices inside the clamping mechanism 300 or on the conveyor plate 900, simplifying the structure of the clamping mechanism 300 and the conveyor plate 900, while also shortening the operation time at each station and improving production efficiency.

[0070] Optionally, the rotor handling mechanism 520 includes a second mounting frame 521, a second translation drive 522, a third mounting frame 523, a second telescopic arm 524, a second gripper 525, and a third gripper 526. The second mounting frame 521 is a frame structure welded from aluminum alloy profiles or steel plates, fixedly installed on the equipment frame 1400, and adjacent to the linear conveyor 100, providing a stable support foundation for the entire rotor handling mechanism 520. The second translation drive 522 is a rodless cylinder or linear module, horizontally mounted on the second mounting frame 521. The driving direction of the second translation drive 522 is perpendicular to the conveying direction of the linear conveyor 100, meaning that the second translation drive 522 drives its output end to reciprocate linearly between the linear conveyor 100, the first angle adjustment mechanism 510, and the clamping mechanism 300. The output end of the second translation drive 522 is connected to the second telescopic arm 524, and is used to drive the second telescopic arm 524 and the third mounting bracket 523, the second gripper 525 and the third gripper 526 mounted on it to move horizontally as a whole, so as to realize the transfer of the motor rotor between different work positions. The third mounting bracket 523 is a plate-shaped or frame structure, which moves with the second translation drive 522.

[0071] The second telescopic arm 524 is a slide cylinder or an electric push rod, vertically mounted on the output end driven by the second translation drive 522. That is, the axis of the second telescopic arm 524 is perpendicular to the horizontal plane, and the telescopic end of the second telescopic arm 524 extends downward. The telescopic end of the second telescopic arm 524 is connected to the third mounting bracket 523. The second telescopic arm 524 is used to drive the third mounting bracket 523 to rise or fall, so as to approach or move away from the motor rotor located on the linear conveyor 100 or the motor rotor located on the first angle adjustment mechanism 510.

[0072] The second gripper 525 and the third gripper 526 are both pneumatic parallel grippers or pneumatic angular grippers, used to grip the outer cylindrical surface or end face of the motor rotor. The second gripper 525 and the third gripper 526 are fixed to the third mounting bracket 523.

[0073] During the transport process, the second translation drive 522 drives the second telescopic arm 524 to move, so that the second gripper 525 is positioned directly above the motor rotor to be gripped on the linear conveyor 100, and the third gripper 526 is positioned directly above the first angle adjustment mechanism 510. The second telescopic arm 524 drives the second gripper 525 and the third gripper 526 to descend, and the second gripper 525 grips the motor rotor on the linear conveyor 100. When the first angle adjustment mechanism 510 has a motor rotor, the third gripper 526 grips the motor rotor on the first angle adjustment mechanism 510 that has already undergone angle adjustment. Subsequently, the second telescopic arm 524 drives the second gripper 525 and the third gripper 526 to rise; the second translation drive 522 drives the second telescopic arm 524 to move towards the first angle adjustment mechanism 510, so that the second gripper 525 is positioned above the first angle adjustment mechanism 510, and the third gripper 526 is positioned above a clamping mechanism 300. The second telescopic arm 524 drives the second gripper 525 and the third gripper 526 to descend. The second gripper 525 releases the motor rotor and places the motor rotor on the first angle adjustment mechanism 510 for angle adjustment. The third gripper 526 releases the motor rotor and places the motor rotor in the clamping mechanism 300.

[0074] By setting two independent grippers, the rotor handling mechanism 520 can simultaneously complete the actions of picking up material from the linear conveyor 100 and placing it in the first angle adjustment mechanism 510, and picking up material from the first angle adjustment mechanism 510 and placing it in the clamping mechanism 300. Alternatively, one gripper can hold the motor rotor while the other gripper is in a ready-to-grip state, reducing idle travel during the handling process and improving handling efficiency. Furthermore, the two grippers share the same second translation drive component 522 and second telescopic arm 524, simplifying the structure and reducing manufacturing costs.

[0075] Combination Figure 4 In some embodiments, the product unloading device 800 includes a second angle adjustment mechanism 810 and a product conveying mechanism 820. The second angle adjustment mechanism 810 is disposed between the linear conveyor 100 and the conveyor tray 900, and is used to drive the motor rotor to rotate a second preset angle. The product conveying mechanism 820 is located on one side of the linear conveyor 100, and the rotor conveying device 1000 is used to move the welded product on the clamping mechanism 300 to the second angle adjustment mechanism 810, and to move the welded product on the second angle adjustment mechanism 810 to the linear conveyor 100.

[0076] For example, the product unloading device 800 is located at the product unloading station of the conveyor tray 900. When the conveyor tray 900 rotates the clamping mechanism 300 holding the welded product to this station, the opening and closing device 400 drives the clamping mechanism 300 to release the welded product. The product transport mechanism 820 first removes the welded product from the clamping mechanism 300. At this time, the posture of the welded product may not be consistent with the detection angle required by the subsequent testing device 1100 on the linear conveyor 100. The product transport mechanism 820 moves the removed welded product to the second angle adjustment mechanism 810. The second angle adjustment mechanism 810 clamps the rotor shaft or housing of the welded product and drives the welded product to rotate according to a preset second preset angle value, so that its circumferential angle is converted to a direction that is convenient for subsequent testing. The second preset angle can be preset according to the distribution position of the welding points on the welded product, the contact position of the test probe, or the positioning requirements of the downstream process. After the angle adjustment is completed, the product handling mechanism 820 removes the welded product from the second angle adjustment mechanism 810 and transfers it back to the linear conveyor 100, ensuring the welded product enters the subsequent testing device 1100 or collection station at the correct angle. By setting up the second angle adjustment mechanism 810, the angle of the welded product is automatically calibrated during the unloading process, eliminating the need for additional angle adjustment units in the testing device 1100 or other downstream equipment. Furthermore, since the angle adjustment process is separated from the welding process in time and space, it does not affect the rotation rhythm of the conveyor tray 900, ensuring overall production efficiency. This structure further reduces manual intervention, which is beneficial for improving the automation level of the production line and product consistency.

[0077] In this embodiment, the product unloading device 800 is located downstream of the rotor loading device 500 in the conveying direction of the first linear conveying section 110. It can adopt the same or similar structure as the rotor loading device 500, which will not be described in detail here.

[0078] Combination Figure 5 and Figure 6 In some embodiments, the conveyor 900 includes a turntable body 910, a turntable drive motor 920, a timing belt assembly 930, and a gearbox 940. The conveyor 900 is horizontally rotatably connected to the equipment frame 1400, and multiple clamping mechanisms 300 are fixedly provided on the edge of the conveyor 900. The turntable drive motor 920 is mounted on the equipment frame 1400, and the timing belt assembly 930 connects the motor shaft of the turntable drive motor 920 and the input shaft of the gearbox 940. The output shaft of the gearbox 940 is connected to the conveyor 900 through a structure such as a gear set.

[0079] Optionally, the conveyor disc 900 has an annular structure, made of aluminum alloy or steel. A connecting cylinder is located in the center of the turntable body 910, passing through a hole in the top plate of the equipment frame 1400 to achieve a rotatable connection with the equipment frame 1400, allowing the turntable body 910 to rotate smoothly around its central axis in the horizontal plane. Multiple clamping mechanisms 300 are evenly fixed along the circumferential edge of the turntable body 910. Each clamping mechanism 300 clamps one motor rotor, enabling multiple motor rotors to perform different operations simultaneously at different workstations during one rotation of the turntable body 910, improving production efficiency. The turntable drive motor 920 is a servo motor or stepper motor, installed inside the equipment frame 1400, to provide rotational power. The synchronous belt assembly 930 and the gearbox 940 are located inside the connecting cylinder. The synchronous belt assembly 930 includes a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt. The driving synchronous pulley is fixedly mounted on the motor shaft of the turntable drive motor 920, and the driven synchronous pulley is fixedly mounted on the input shaft of the gearbox 940. The synchronous belt is tensioned between the driving and driven synchronous pulleys. The synchronous belt assembly 930 transmits the rotational power of the turntable drive motor 920 to the gearbox 940 through flexible transmission, offering advantages such as smooth transmission, low noise, and no need for lubrication. It also provides some protection against slippage under overload conditions. The gearbox 940 is a planetary gear reducer or a worm gear reducer. Internally, it uses multiple gear pairs to convert the high-speed, low-torque rotation of the input shaft into low-speed, high-torque rotation of the output shaft, and can also change the rotation direction of the output shaft. The output shaft of the gearbox 940 is connected to the conveyor disc 900 via a gear set. The gear set includes a small gear mounted on the output shaft of the gearbox 940 and a large gear fixed inside the connecting cylinder. The small gear and the large gear mesh with each other, transmitting the rotational power of the gearbox 940 output shaft to the turntable body 910, driving the turntable body 910 to rotate intermittently or continuously at a precise angular velocity. Through the combined drive of the turntable drive motor 920, the synchronous belt assembly 930, the gearbox 940, and the gear set, high-precision indexing rotation of the conveyor disc 900 can be achieved, meeting the positioning accuracy requirements of each workstation. At the same time, the speed reduction and torque increase effect of the gearbox 940 allows the turntable drive motor 920 to operate within an optimal speed range, improving the efficiency and stability of the drive system.

[0080] Combination Figure 7 and Figure 8 In some embodiments, the clamping mechanism 300 includes a positioning cylinder 310 and a clamping member 320. The top of the positioning cylinder 310 is provided with a positioning hole 311 for insertion and engagement with the motor rotor. The clamping member 320 is rotatably connected to the positioning cylinder 310, and the clamping member 320 is configured to rotate to clamp or release the motor rotor under the drive of the opening and closing device 400.

[0081] For example, the shape of the positioning hole 311 at the top of the positioning cylinder 310 matches the shape of the lower shaft of the motor rotor. For example, the positioning hole 311 is a circular hole or a hole with a keyway. The lower shaft of the motor rotor is inserted into the positioning hole 311 to achieve radial positioning. The clamping member 320 is rotatably mounted on the upper side of the positioning cylinder 310. One end of the clamping member 320 is the clamping end, located above the positioning cylinder 310 and facing the center of the positioning hole 311. The other end of the clamping member 320 is the driving end. The opening and closing device 400 acts on the driving end of the clamping member 320, causing the clamping member 320 to rotate around the axis. When the clamping member 320 rotates in one direction, the clamping end moves towards the center of the positioning hole 311, pressing against the side or flange of the motor rotor inserted into the positioning hole 311, thereby achieving clamping. When the clamping member 320 rotates in the opposite direction, the clamping end moves away from the center of the positioning hole 311, releasing the motor rotor.

[0082] The positioning hole 311 provides the initial positioning reference for the motor rotor. The clamping member 320, driven by the opening and closing device 400, rotates and clamps the rotor, generating sufficient clamping force to prevent displacement of the motor rotor during subsequent rotation of the conveyor plate 900 and welding. Furthermore, because the clamping member 320 uses rotation rather than linear translation, it occupies less space and is suitable for arrangement within the limited space at the edge of the conveyor plate 900. This structure ensures stable fixation of the motor rotor between various workstations, improves the positional accuracy of the workpiece during welding, and thus contributes to improving the consistency of welding quality.

[0083] In some embodiments, the clamping member 320 includes a connecting shaft 321, a clamping plate 322, and a driving arm 323. The connecting shaft 321 is rotatably inserted through the positioning cylinder 310 and is arranged parallel to the positioning hole 311. The clamping plate 322 is movably disposed on the upper side of the positioning cylinder 310 and is fixedly connected to the upper end of the connecting shaft 321. The driving arm 323 is located below the clamping plate 322 and is disposed opposite to the clamping plate 322. The driving arm 323 is fixedly connected to the lower end of the connecting shaft 321 and is configured to reciprocate under the drive of the opening and closing device 400.

[0084] For example, the connecting shaft 321 is a cylindrical shaft that passes vertically through a shaft hole provided on the side wall of the positioning cylinder 310. The connecting shaft 321 is parallel to the central axis of the positioning hole 311. The connecting shaft 321 can rotate freely within the shaft hole. The clamping plate 322 is a plate-like structure. The side of the clamping plate 322 near the positioning hole 311 can be provided with a groove or other structure adapted to the motor rotor. One end of the clamping plate 322 is fixedly connected to the upper end of the connecting shaft 321, and the other end of the clamping plate 322 is a free end. The driving arm 323 is also a rod-like or plate-like structure. One end of the driving arm 323 is fixedly connected to the lower end of the connecting shaft 321, and the other end of the driving arm 323 is a free end. When the opening and closing device 400 pushes the free end of the driving arm 323 to swing, the driving arm 323 drives the connecting shaft 321 to rotate, and the connecting shaft 321 then drives the clamping plate 322 to swing synchronously. Since the drive arm 323 and the clamping plate 322 are located on the upper and lower sides of the positioning cylinder 310 respectively and are linked by the same connecting shaft 321, the swing angle of the drive end is the same as the swing angle of the clamping end, which facilitates the control of the upper clamping plate 322 by the lower drive arm 323. This upper and lower separated transmission structure arranges the force application point of the opening and closing device 400 in the middle or lower part of the positioning cylinder 310, avoiding the need to set up drive components in the space above the conveyor plate 900, which helps to simplify the structure above the conveyor plate 900 and leaves more operating space for the welding device 700 and the resistance feeding device 600. At the same time, the reciprocating swing of the drive arm 323 is converted into the rotational clamping action of the clamping plate 322, which is simple and reliable, and facilitates rapid opening and closing, thereby improving the production cycle of the equipment.

[0085] In some embodiments, two clamping members 320 are symmetrically arranged about the center line of the positioning hole 311, and the two clamping members 320 are configured to rotate in opposite directions under the drive of the opening and closing device 400.

[0086] For example, two clamping members 320 are respectively disposed on opposite sides of the positioning hole 311, such as the left and right sides. The connecting shafts 321 of the two clamping members 320 are parallel to the center line of the positioning hole 311. Under the drive of the opening and closing device 400, one clamping member 320 rotates clockwise and the other rotates counterclockwise, causing the two clamping plates 322 to move simultaneously toward or away from the center of the positioning hole 311. When the two clamping plates 322 move toward the center simultaneously, they clamp the sides of the motor rotor from two opposite directions, forming a centered clamping effect. Compared with a single clamping member 320, the symmetrically arranged two clamping members 320 can evenly distribute the clamping force on both sides of the motor rotor, preventing the motor rotor from tilting during clamping and ensuring the perpendicularity and coaxiality of the motor rotor in the positioning hole 311. This centering clamping method is particularly important in the welding process because the varistor needs to be precisely placed on a specific welding point on the motor rotor. Even a slight misalignment of the motor rotor can lead to welding position deviation and affect welding quality. Therefore, the symmetrical arrangement of the two clamping components 320 helps improve welding accuracy and reduce defects caused by asymmetrical clamping.

[0087] In some embodiments, the clamping member 320 further includes a synchronizing gear 324, which is fixedly connected to the connecting shaft 321, and the synchronizing gears 324 between the two clamping members 320 mesh with each other.

[0088] For example, a synchronous gear 324 is fixedly mounted in the middle of the connecting shaft 321 of each clamping member 320. The synchronous gears 324 of the two clamping members 320 have the same number of teeth and mesh with each other. When one of the connecting shafts 321 is driven to rotate, the synchronous gear 324 on it drives the other synchronous gear 324 to rotate in the opposite direction, thereby causing the other connecting shaft 321 to rotate in the opposite direction at the same angular velocity. Through this synchronous gear 324 meshing structure, only one of the two clamping members 320 needs to be driven to achieve synchronous and opposite rotational movements of the two clamping members 320, without having to apply driving force to the two clamping members 320 separately. This simplifies the driving method of the opening and closing device 400. For example, only one drive arm 323 is needed to control the opening and closing of the two clamping plates simultaneously. At the same time, since the synchronous gear 324 meshing has a precise transmission ratio, it can ensure that the two clamping plates 322 always maintain a symmetrical movement trajectory, and there will be no situation where one clamping plate 322 contacts the workpiece first and the other contacts it later, thereby further improving the synchronicity and centering of the clamping. This structure reduces the number of opening and closing devices by 400, thereby reducing equipment costs and control complexity.

[0089] Combination Figure 9In some embodiments, the opening and closing device 400 includes an opening drive mechanism 410 and a closing drive mechanism 420. The opening drive mechanism 410 includes a first telescopic member 411 and a first actuating end 412. The first telescopic member 411 drives the first actuating end 412 to reciprocate. The opening drive mechanism 410 is configured to push a drive arm 323 to swing in a first direction when the first telescopic member 411 drives the first actuating end 412 forward, and to disengage from the drive arm 323 when the first telescopic member 411 drives the first actuating end 412 backward. The closing drive mechanism 420 includes a second telescopic member 421 and a second actuating end 422. The second telescopic member 421 drives the second actuating end 422 to reciprocate. The closing drive mechanism 420 is configured to push a drive arm 323 to swing in a second direction when the second telescopic member 421 drives the second actuating end 422 forward, and to disengage from the drive arm 323 when the second telescopic member 421 drives the second actuating end 422 backward, wherein the second direction is opposite to the first direction.

[0090] For example, both the opening drive mechanism 410 and the closing drive mechanism 420 are fixedly mounted on the frame above or to the side of the conveyor tray 900 and do not rotate with the conveyor tray 900. When the conveyor tray 900 rotates the clamping mechanism 300 to a position where the clamping member 320 needs to be opened, such as at the rotor loading device 500 or the product unloading device 800, the first telescopic member 411 drives the first actuating end 412 to move forward. The first actuating end 412 contacts and pushes the drive arm 323 to swing in the first direction. The drive arm 323 drives the clamping plate 322 to rotate away from the center of the positioning hole 311 through the connecting shaft 321, thereby causing the clamping mechanism 300 to release the motor rotor or the welded product. Subsequently, the first telescopic member 411 drives the first actuating end 412 to retract. The first actuating end 412 disengages from the drive arm 323, and the drive arm 323 is no longer subjected to thrust. However, since no other force is acting at this time, the clamping mechanism 300 remains in the open state or is activated by the subsequent closing drive mechanism 420. When the conveyor plate 900 rotates the clamping mechanism 300 to the position where the motor rotor needs to be clamped, for example, after loading or unloading and when no-load rotation is required, the second telescopic member 421 drives the second actuator 422 to move forward. The second actuator 422 pushes the drive arm 323 to swing in the second direction. The drive arm 323 drives the clamping plate 322 to rotate toward the center of the positioning hole 311, thereby clamping the motor rotor with the clamping mechanism 300. After the second actuator 422 retracts, it disengages from the drive arm 323. By setting two independent drive mechanisms to be responsible for the opening and closing actions respectively, and by having the two drive mechanisms only contact the drive arm 323 when an action is required and disengage at other times, the clamping mechanism 300 is not restricted by the opening and closing device 400 during the rotation of the conveyor plate 900 and can rotate freely. This non-contact drive method avoids setting pneumatic or electric pipelines on the rotating conveyor plate 900, simplifies the structure, and improves reliability. At the same time, the separation of opening and closing actions makes it easy to independently control the clamping state at different workstations and adapt to complex process requirements.

[0091] It is understandable that only one opening drive mechanism 410 can be set. For example, the opening drive mechanism 410 is set to correspond with the product unloading device 800, and is used to drive the corresponding clamping mechanism 300 to open when the product unloading device 800 unloads. Alternatively, two opening drive mechanisms 410 can be set. One opening drive mechanism 410 is set to correspond with the product unloading device 800, and is used to drive the corresponding clamping mechanism 300 to open when the product unloading device 800 unloads. The other opening drive mechanism 410 is set to correspond with the rotor loading device 500, and is used to ensure that the corresponding clamping mechanism 300 is open when the rotor loading device 500 loads.

[0092] Combination Figure 10In some embodiments, the resistor feeding device 600 includes a vibratory feeder 610, a cylinder pushing mechanism 620, and an annular vacuum suction cup 630. The vibratory feeder 610 is fixedly mounted on the equipment frame 1400 and adjacent to the conveyor plate 900. The cylinder pushing mechanism 620 is located on one side of the vibratory feeder 610, and its output end is connected to the annular vacuum suction cup 630. The annular vacuum suction cup 630 is used to adsorb varistors.

[0093] Exemplarily, the vibratory feeder 610 automatically arranges randomly stacked varistors according to a preset orientation and posture through the directional vibration of its hopper, and outputs them sequentially to the linear feeder track of the vibratory feeder 610. A cylinder pushing mechanism 620 is located at the end of the linear feeder track of the vibratory feeder 610, including a pushing cylinder and a slide. The pushing cylinder drives the slide to perform reciprocating linear motion. An annular vacuum suction cup 630 is mounted at the front end of the slide. The suction surface of the annular vacuum suction cup 630 is annular, matching the contour of the upper surface of the varistor. When the varistor is conveyed to the end of the linear feeder track, the cylinder pushing mechanism 620 drives the annular vacuum suction cup 630 forward, causing the annular vacuum suction cup 630 to contact the upper surface of the varistor. The annular vacuum suction cup 630 generates negative pressure through an external vacuum generator, adsorbing and fixing the varistor. Subsequently, the cylinder pushing mechanism 620 continues to move forward, pushing the varistor directly above the predetermined welding position of the motor rotor of the clamping mechanism 300. At this point, the annular vacuum chuck 630 releases the vacuum, and the varistor falls under its own weight and is placed on the welding surface of the motor rotor. The annular structure of the annular vacuum chuck 630 leaves a gap in the middle. When the varistor is placed on the motor rotor, this gap can accommodate existing protrusions or positioning structures on the motor rotor, avoiding interference between the chuck and the workpiece. At the same time, the annular contact area can provide uniform adsorption force, preventing the varistor from tilting or falling during the transfer process.

[0094] The automatic sorting by the vibratory feeder 610, the linear conveying by the cylinder pushing mechanism 620, and the stable adsorption and release by the annular vacuum suction cup 630 realize the automatic feeding and precise positioning of varistors, replacing the manual operation of picking up and placing varistors, improving the feeding efficiency and the consistency of the placement position, and helping to reduce welding defects caused by varistor position deviation.

[0095] Combination Figure 11 In some embodiments, the welding apparatus 700 includes a pre-pressing mechanism 710 and at least one welding mechanism 720. The pre-pressing mechanism 710 applies pressure and preheats the motor rotor and varistor on the clamping mechanism 300 to achieve pre-fixation. The welding mechanism 720 welds the pre-fixed motor rotor and varistor to form a welded product.

[0096] Exemplarily, the pre-pressing mechanism 710 is located on one side of the conveyor tray 900 and downstream of the resistance feeding device 600 in the conveying direction of the conveyor tray 900. The pre-pressing mechanism 710 includes a liftable pressure head and a heating element. When the conveyor tray 900 delivers the clamping mechanism 300, which holds the motor rotor and has placed the varistor, to below the pre-pressing mechanism 710, the pressure head descends, applying downward pressure to the varistor and pressing it firmly against the welding surface of the motor rotor. Simultaneously, the heating element preheats the welding area through the pressure head, creating a slight pre-connection between the varistor and the motor rotor through thermal pressing, forming a pre-fixation. The pre-fixed components will not undergo relative displacement during subsequent rotation of the conveyor tray 900.

[0097] The welding mechanism 720 is located at the station after the pre-pressing mechanism 710, and one or more can be set up, for example, two independent welding mechanisms 720. Each welding mechanism 720 includes at least one welding actuator 721 such as a welding torch and a displacement mechanism corresponding to the welding actuator 721. For example, when five weld points need to be formed between the varistor and the motor rotor, two welding mechanisms 720 are set up. One welding mechanism 720 includes two welding actuators 721 and two displacement mechanisms corresponding to the two welding actuators 721, and the other welding mechanism 720 includes three welding actuators 721 and three displacement mechanisms corresponding to the three welding actuators 721. The two welding mechanisms 720 are arranged along the conveying direction of the conveyor plate 900 and are used to achieve welding at different points.

[0098] Optionally, the displacement mechanism is mounted on the frame, and its output end is connected to the welding actuator 721, enabling the corresponding welding actuator 721 to perform lifting, translation, and rotation movements, thereby achieving precise positioning and obstacle avoidance during the conveying process of the conveyor tray 900. For example, the displacement mechanism includes a fourth mounting bracket 722, a third translation drive component 723, a fifth mounting bracket 724, a third telescopic arm 725, a fourth telescopic arm 726, a welding torch fixing component 727, and a solder feeding tube 728. The fourth mounting bracket 722 is made of aluminum alloy profiles or welded steel plates and is fixedly installed on the upper surface of the equipment frame 1400, or fixedly installed above the conveyor tray 900 through a suspension fixing bracket 1410, providing a stable support foundation for the entire displacement mechanism. The third translation drive 723 is a rodless cylinder or linear module, horizontally mounted on the fourth mounting bracket 722. The output end of the third translation drive 723 is connected to the fifth mounting bracket 724, used to drive the fifth mounting bracket 724 to move horizontally, thereby adjusting the position of the welding actuator 721 on the horizontal plane so that it is aligned with the welding point on the motor rotor. The fifth mounting bracket 724 is a plate-like or frame structure, moving with the third translation drive 723. The third telescopic arm 725 is a double-rod cylinder or guide rod cylinder, horizontally mounted on the fifth mounting bracket 724. The output end of the third telescopic arm 725 is connected to the solder feeding tube 728, used to drive the output end of the solder feeding tube 728 to extend horizontally to the vicinity of the welding point, or to retract horizontally to avoid rotation of the conveyor tray 900. For example, the solder feeding tube 728 and the solder wire conveying mechanism 729 (see Figure 1 The third telescopic arm 725 is connected to the solder feeding tube 728 at one end away from the solder wire feeding mechanism 729. The fourth telescopic arm 726 is a slide cylinder or electric push rod, mounted on the fifth mounting bracket 724 and inclined downwards. Its inclination angle allows the welding actuator 721 mounted at its end to contact the welding point in a posture perpendicular to the welding surface of the motor rotor or at a preset angle. The telescopic end of the fourth telescopic arm 726 is connected to a welding gun fixing component 727, which is a metal clamping block or quick clamp, used to fix the welding actuator 721, which is a soldering iron or resistance welding electrode tip. The fourth telescopic arm 726 drives the welding actuator 721 to descend to contact the welding point for welding, and rises after welding to avoid the rotation of the conveyor tray 900. Through the coordinated movement of the third translation drive 723, the third telescopic arm 725, and the fourth telescopic arm 726, the displacement mechanism can realize the translation of the welding actuator 721 in two mutually perpendicular directions in the horizontal plane and the lifting movement in the vertical direction. Combined with the independent extension and retraction of the solder feeding component, it can meet the positioning requirements of multiple welding points on different types of motor rotors. At the same time, when not welding, it keeps the welding actuator 721 and the solder feeding component away from the rotation path of the conveyor plate 900 to avoid collisions, thereby improving the safety and applicability of the equipment.

[0099] In this embodiment, pre-fixation is achieved through pre-pressure and preheating before the welding mechanism 720 performs the actual welding. This avoids displacement of the varistor during welding and improves the accuracy of the welding position. Multiple welding mechanisms 720 can simultaneously or sequentially weld multiple welding points, improving welding efficiency. The preheating process also reduces thermal shock during the actual welding, lowering the risk of product damage due to sudden temperature changes, thereby further reducing the problems of incomplete welds and product damage.

[0100] Combination Figure 13 In some embodiments, the rotor welding equipment further includes a testing device 1100 and a rejection device 1200. The testing device 1100 is located on one side of the linear conveyor 100 and downstream of the product unloading device 800 in the conveying direction of the linear conveyor 100. The testing device 1100 is used to perform electrical performance testing on the welded products. The rejection device 1200 is located on one side of the linear conveyor 100 and downstream of the testing device 1100 in the conveying direction of the linear conveyor 100. The rejection device 1200 is used to move defective products confirmed by the testing device 1100 to the defective product storage station 1210.

[0101] For example, after the product unloading device 800 transfers the welded product back to the linear conveyor 100, the linear conveyor 100 continues to convey the welded product forward, first passing through the testing device 1100. The testing device 1100 includes a test drive component, a probe, and a detection circuit. The test drive component can be a vertically arranged telescopic component or a linear drive component, capable of driving the probe to contact or detach from the electrodes and leads of the varistor of the welded product. The detection circuit measures its resistance value or conductivity performance to determine whether the weld is qualified. Since the specific structure of the testing device 1100 is not the main improvement of this embodiment, it will not be described in detail here.

[0102] After testing, the welded product continues to the rejection device 1200, which includes a laterally movable push rod or a swingable robotic arm. If the testing device 1100 determines the welded product to be defective, the rejection device 1200 activates, picking up the defective product from the linear conveyor 100 and transferring it to the defective product storage station 1210. If the testing device 1100 determines it to be good, the rejection device 1200 does not activate, and the welded product continues to move along the linear conveyor 100.

[0103] By setting up the testing device 1100 and the rejection device 1200, online quality inspection and automatic sorting of welded products are achieved, preventing defective products from being mixed into subsequent processes or ending up in the hands of customers, thus further improving the overall product yield. At the same time, automatic inspection and rejection reduce reliance on manual visual inspection and lower the rate of missed inspections.

[0104] Combination Figure 14 In some embodiments, the rotor welding equipment also includes a cleaning device 1300. Located downstream of the product unloading device 800 in the conveying direction of the conveyor tray 900, the cleaning device 1300 is used to clean the clamping mechanism 300.

[0105] For example, after the product unloading device 800 removes the welded product from the clamping mechanism 300, the clamping mechanism 300 continues to rotate with the conveyor tray 900 to the position of the cleaning device 1300. The cleaning device 1300 includes an air nozzle or a retractable brush. The air nozzle is connected to a compressed air source and sprays high-pressure air onto the surface of the clamping plate 322 and the inside of the positioning hole 311 of the clamping mechanism 300 to blow away welding slag, dust, or residual insulation debris that may be generated during the welding process. If a brush is used, the brush descends and rotates to brush away any adhering substances on the surface of the clamping member 320. After cleaning, the clamping mechanism 300 continues to rotate in a clean state to the rotor loading device 500 to receive the next motor rotor. By cleaning the clamping mechanism 300 promptly after product unloading, it is possible to prevent the accumulation of residues that could lead to loose clamping or inaccurate positioning, thereby ensuring the clamping accuracy and positioning consistency of each motor rotor during continuous production. This helps to maintain high welding quality in the long term and reduces welding defects caused by contamination of the clamping mechanism.

[0106] In some embodiments, the rotor welding equipment further includes a control device, which is electrically connected to the linear conveyor 100, the insulation treatment device 200, the opening and closing device 400, the rotor feeding device 500, the resistance feeding device 600, the welding device 700, the product unloading device 800, and the conveyor plate 900, respectively, and is used to control the operating sequence of the linear conveyor 100, the insulation treatment device 200, the opening and closing device 400, the rotor feeding device 500, the resistance feeding device 600, the welding device 700, the product unloading device 800, and the conveyor plate 900.

[0107] For example, the control device is a programmable logic controller or an industrial computer, installed in the electrical control cabinet of the equipment rack 1400. The control device includes a central processing unit, a storage unit, input / output interfaces, and a communication interface. The central processing unit is used to execute preset control programs, the storage unit is used to store control programs, operating parameters, and operating logs, the input / output interfaces are used to connect the sensors and actuators of each device, and the communication interface is used to exchange data with a host computer or other devices.

[0108] The control device is configured to execute the following control flow:

[0109] The control device starts the linear conveyor 100, which transports the motor rotor placed on the linear conveyor 100 along a straight line. When the motor rotor is transported to the working position of the insulation treatment device 200, the linear conveyor 100 pauses or continues operation, and the control device starts the insulation treatment device 200 to remove the insulation layer on the motor rotor. After the insulation treatment is completed, the control device controls the rotor loading device 500 to operate, removing the insulated motor rotor from the linear conveyor 100 and transferring it to the clamping mechanism 300 on the conveyor tray 900.

[0110] During the process of the rotor feeding device 500 transferring the motor rotor, the control device determines whether the clamping mechanism 300 is in the feeding position based on the current position signal of the conveyor plate 900. When the clamping mechanism 300 is in the feeding position, the control device controls the closing drive mechanism 420 in the opening and closing device 400 to operate, driving the clamping mechanism 300 to clamp the motor rotor. Subsequently, the control device controls the conveyor plate 900 to rotate by one station angle, moving the clamping mechanism 300 holding the motor rotor to the position of the resistance feeding device 600.

[0111] When the clamping mechanism 300 reaches the resistor loading station, the conveyor plate 900 pauses rotation, and the control device controls the resistor loading device 600 to move the varistor to the predetermined welding position on the motor rotor. After the resistor loading is completed, the control device controls the conveyor plate 900 to continue rotating, moving the clamping mechanism 300 sequentially to each station of the welding device 700. At the welding device 700, the control device first controls the pre-pressing mechanism 710 to pre-press and preheat the motor rotor and the varistor, and then controls the welding mechanism 720 to perform the formal welding, forming the welded product.

[0112] After welding is completed, the control device controls the conveyor plate 900 to rotate the clamping mechanism 300 to the product unloading station, controls the opening drive mechanism 410 in the opening and closing device 400 to act, drives the clamping mechanism 300 to release the welded product, and controls the product unloading device 800 to take the welded product out of the clamping mechanism 300 and transfer it back to the linear conveyor 100.

[0113] After the welded products are transferred back to the linear conveyor 100, the control device controls the linear conveyor 100 to continue operating, sequentially conveying the welded products to the testing device 1100 and the rejection device 1200. The control device receives the test result signal output by the testing device 1100. If the test result is a defective product, the control device controls the rejection device 1200 to remove the defective product from the linear conveyor 100; if the test result is a good product, the control device 1200 does not operate, and the welded products continue to be conveyed to the good product collection area.

[0114] After the product unloading device 800 completes unloading and the clamping mechanism 300 releases the welded product, the control device controls the conveyor plate 900 to continue rotating, moving the empty clamping mechanism 300 to the station of the cleaning device 1300. The cleaning device 1300 then cleans the clamping mechanism 300, removing welding slag and dust generated during the welding process. After cleaning, the control device controls the conveyor plate 900 to rotate the cleaned clamping mechanism 300 to the loading station, awaiting the loading of the next motor rotor.

[0115] By setting up a control device, the entire process of the rotor welding equipment, from motor rotor loading, insulation treatment, angle adjustment, varistor loading, pre-pressing and preheating, welding, product unloading, testing and rejection to 300° cleaning by the clamping mechanism, has been automated. The control device presets timing parameters based on the operating speed and action time of each device to ensure coordination between processes and avoid collisions or excessively long waiting times. Simultaneously, the control device can monitor the operating status of each device in real time, issuing alarm signals and stopping the equipment when an abnormality is detected, thus improving the safety and reliability of equipment operation.

[0116] In some embodiments, the conveyor tray 900 further includes an angle detection element, which is a circular grating encoder or a magnetic grating encoder, including a fixed part and a rotating part. The fixed part is mounted on the equipment frame 1400, and the rotating part is coaxially and fixedly connected to the turntable body 910, for real-time detection of the absolute angular position or relative angular displacement of the turntable body 910. The control device is electrically connected to the angle detection element and the turntable drive motor 920, respectively. The control device has a preset target angle sequence corresponding to the number and station distribution of the clamping mechanisms 300.

[0117] The control device is configured to control the turntable drive motor 920 based on the detection results of the angle detection element. For example, when the clamping mechanism 300 needs to be moved from one station to the next, the control device sends a start command to the turntable drive motor 920, which drives the turntable body 910 to rotate via a reduction mechanism. During rotation, the angle detection element continuously acquires the real-time angular position of the turntable body 910 and feeds the angle signal back to the control device. The control device compares the real-time angular position with the target angular position and calculates the current angular deviation. When the turntable body 910 approaches the target angular position, the control device reduces the speed of the turntable drive motor 920, causing the turntable body 910 to approach the target position at a low speed. When the angular deviation enters a preset deceleration threshold range, the control device controls the turntable drive motor 920 to stop outputting torque. Furthermore, it can control the built-in brake relay of the turntable drive motor 920 to activate, causing the brake of the turntable drive motor 920 to lock the motor shaft, preventing the turntable body 910 from overshooting due to inertia. After the turntable drive motor 920 stops outputting torque, the control device reads the angle signal from the angle detection element again to confirm whether the deviation between the actual stopping position and the target angle position is within the allowable positioning accuracy range. If the deviation exceeds the limit, the control device performs micro-motion correction, for example, controlling the turntable drive motor 920 to output a small angular displacement in a pulse manner to gradually approach the target position until the deviation meets the requirements.

[0118] Optionally, the control device is also equipped with an angle deviation compensation algorithm. The control device records the actual angle deviation after each indexing rotation stops and calculates the cumulative error trend of the system based on historical deviation data. When the cumulative error trend indicates that the turntable body 910 has unidirectional drift, the control device automatically corrects the target angle position for the next indexing rotation, compensating in advance for errors caused by mechanical backlash or wear in the system.

[0119] Optionally, the control device stores the actual deviation data of each indexing rotation in the memory to form an equipment operation log, which facilitates maintenance personnel to regularly analyze the positioning accuracy change trend of the equipment, predict the wear of the deceleration mechanism and transmission components, and realize predictive maintenance.

[0120] By setting up angle detection elements and adopting closed-loop indexing control, the repeatability of the conveyor tray 900 can be effectively improved. High-precision station positioning ensures that the alignment deviation between the electrodes of the varistor and the welding points of the motor rotor is correct when the resistance feeding device 600 places the varistor, avoiding welding misalignment or incomplete welding caused by positioning deviations. Simultaneously, the angle deviation compensation algorithm can adapt to mechanical wear after long-term operation, extending the high-precision service life of the equipment and reducing the frequency of manual calibration and maintenance costs. Furthermore, the deviation data recorded by the control device provides a quantitative basis for equipment fault diagnosis and preventative maintenance, enhancing the equipment's intelligence level.

[0121] In some other embodiments, the angle detection element includes a plurality of permanent magnets uniformly mounted circumferentially along the lower surface of the turntable body 910, and Hall effect sensors or magnetoresistive sensors mounted on the equipment frame 1400 corresponding to the stop position of each station. When the turntable body 910 rotates and the permanent magnets pass the sensors, the sensors output pulse signals, and the control device determines whether the turntable body 910 has reached the target position based on the pulse signals.

[0122] Alternatively, the angle detection element can also adopt a visual recognition method. For example, the angle detection element includes an industrial camera fixedly installed on the equipment frame 1400. The upper or lower surface of the turntable body 910 is provided with annular scale markings. The industrial camera captures images of the scale markings and identifies the real-time angle position of the turntable body 910 through image processing algorithms.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rotor welding device, characterized in that, include: A linear conveyor device used to convey motor rotors along a linear direction; An insulation treatment device for removing the insulation layer from the motor rotor on the linear conveyor; A clamping mechanism for releasably clamping the motor rotor; An opening and closing device is used to drive the clamping mechanism to perform clamping or releasing actions; A rotor loading device is used to transfer the motor rotor on the linear conveyor to the clamping mechanism; A resistor feeding device is used to supply varistors and transfer the varistors to the motor rotor located on the clamping mechanism; A welding device is used to weld the motor rotor and the varistor on the clamping mechanism to form a welded product; The product unloading device is used to transfer the welded product to the linear conveyor device; A conveyor plate is connected to the clamping mechanism. The conveyor plate is configured to drive the clamping mechanism to rotate circumferentially and move sequentially to the rotor feeding device, the resistance feeding device, the welding device, and the product unloading device.

2. The rotor welding equipment according to claim 1, characterized in that, The clamping mechanism includes: The positioning cylinder has a positioning hole at its top for insertion and engagement with the motor rotor; A clamping member is rotatably connected to the positioning cylinder, and the clamping member is configured to rotate and clamp or release the motor rotor under the drive of the opening and closing device.

3. The rotor welding equipment according to claim 2, characterized in that, The clamping element includes: A connecting shaft is rotatably inserted through the positioning cylinder and is arranged parallel to the positioning hole; A clamping plate is movably disposed on the upper side of the positioning cylinder and is fixedly connected to the upper end of the connecting shaft; A drive arm is located below and opposite to the clamping plate. The drive arm is fixedly connected to the lower end of the connecting shaft. The drive arm is configured to reciprocate under the drive of the opening and closing device.

4. The rotor welding equipment according to claim 3, characterized in that, Two clamping members are symmetrically arranged about the plane passing through the center line of the positioning hole, and the two clamping members are configured to rotate in opposite directions under the drive of the opening and closing device.

5. The rotor welding equipment according to claim 4, characterized in that, The clamping member also includes a synchronizing gear, which is fixedly connected to the connecting shaft, and the synchronizing gears of the two clamping members mesh with each other.

6. The rotor welding equipment according to any one of claims 3 to 5, characterized in that, The opening and closing device includes: The opening drive mechanism includes a first telescopic member and a first actuator. The first telescopic member is used to drive the first actuator to reciprocate. The opening drive mechanism is configured to push the drive arm to swing in a first direction when the first telescopic member drives the first actuator to move forward, and to disengage from the drive arm when the first telescopic member drives the first actuator to retract. The closing drive mechanism includes a second telescopic member and a second actuator. The second telescopic member is used to drive the second actuator to reciprocate. The closing drive mechanism is configured to push the drive arm to swing in a second direction when the second telescopic member drives the second actuator to move forward, and to disengage from the drive arm when the second telescopic member drives the second actuator to retract. The second direction is opposite to the first direction.

7. The rotor welding equipment according to claim 1, characterized in that, The welding apparatus includes: The pre-pressing mechanism is used to apply pressure and preheat the motor rotor and the varistor on the clamping mechanism to achieve pre-fixation; At least one welding mechanism is used to weld the pre-fixed motor rotor and the varistor to form a welded product.

8. The rotor welding equipment according to claim 1, characterized in that, Also includes: A testing device is disposed on one side of the linear conveyor and is located downstream of the product unloading device in the conveying direction of the linear conveyor. The testing device is used to perform electrical performance testing on the welded product. A rejection device is disposed on one side of the linear conveyor and is located downstream of the testing device in the conveying direction of the linear conveyor. The rejection device is used to move defective products confirmed by the testing device to the defective product storage station.

9. The rotor welding equipment according to claim 1, characterized in that, Also includes: A cleaning device is located downstream of the product unloading device in the conveying direction of the conveyor tray, and the cleaning device is used to clean the clamping mechanism.

10. The rotor welding equipment according to claim 1, characterized in that, The rotor feeding device includes: A first angle adjustment mechanism is disposed between the linear conveying device and the conveying tray. The first angle adjustment mechanism is used to drive the motor rotor to rotate a first preset angle. A rotor transport mechanism is located on one side of the linear conveying device. The rotor transport mechanism is used to move the motor rotor on the linear conveying device to the first angle adjustment mechanism, and to move the motor rotor on the first angle adjustment mechanism to the clamping mechanism.

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