A motor stator coating device

Abstract

This invention discloses a motor stator coating apparatus, comprising a frame, a coating conveyor line, a return conveyor line, and several tooling fixtures conveyed on the coating and return conveyor lines; transfer components are provided between the output end of the return conveyor line and the input end of the coating conveyor line, and between the output end of the coating conveyor line and the input end of the return conveyor line; an electrostatic coating device is provided on the coating conveyor line, and a loading / unloading device is provided on the return conveyor line; the loading / unloading device includes: a liftable lifting component located below the return conveyor line for lifting the tooling fixtures; a liftable stator clamping component located below the return conveyor line and corresponding to the position of the lifting component for lifting and clamping the motor stator; and disassembly / assembly components located on both sides of the stator clamping component for clamping both ends of the tooling fixtures to remove or insert them. This invention has the advantage of high efficiency.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing equipment technology, and in particular to a motor stator coating device. Background Technology

[0002] In existing motor stator coating production lines, it is usually necessary to use a specific long shaft tooling to clamp the motor stator through the center, then feed it into the coating line to complete electrostatic coating, and finally pull out the tooling at the loading and unloading station, remove the finished stator and reinstall the stator to be processed.

[0003] Traditional motor stator coating equipment has the following main shortcomings in the loading and unloading process:

[0004] Firstly, the level of automation integration is low. Currently, the insertion and removal of tooling in many devices still largely rely on manual labor or independent and decentralized auxiliary mechanisms. Because the tooling fits tightly with the stator, manual insertion and removal is not only laborious but also makes it difficult to ensure concentricity, which can easily damage the stator. At the same time, there is a lack of effective automated flow and material loading / unloading integration between the coating line and the return line, resulting in an overall inefficient state of semi-manual and semi-mechanical operation.

[0005] Secondly, the loading and unloading stations are time-consuming and have low coordination efficiency. Even if some equipment uses mechanical structures to assist in inserting and removing tooling, its operation mode is mostly a single-station sequential operation. In this mode, the mechanical movements of the equipment and the manual material changing movements cannot overlap. The equipment inevitably needs to "wait" for manual operation, resulting in a long loading and unloading cycle time, which seriously restricts the production capacity of the entire production line.

[0006] Therefore, it is necessary to further improve and refine the existing technology to overcome these shortcomings, and this invention is made based on this situation. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-efficiency motor stator coating device.

[0008] This invention is achieved through the following technical solution:

[0009] To solve the above-mentioned technical problems, the present invention provides a motor stator coating apparatus, including a frame, on which a coating conveyor line, a return conveyor line, and a plurality of tooling fixtures are placed on the coating conveyor line and the return conveyor line for conveying the motor stator to be processed. Transfer components for transferring the tooling fixtures between the corresponding conveyor lines are provided between the output end of the return conveyor line and the input end of the coating conveyor line, and between the output end of the coating conveyor line and the input end of the return conveyor line. An electrostatic coating device for electrostatically coating the motor stator is provided on the coating conveyor line, and a loading / unloading device is provided on the return conveyor line. The loading / unloading device includes:

[0010] A liftable lifting assembly located below the return conveyor line and used to lift the tooling;

[0011] A liftable stator clamping assembly is located below the return conveyor line and corresponds to the position of the lifting assembly, used to lift and clamp the motor stator.

[0012] And disassembly and assembly components located on both sides of the stator clamping assembly, for clamping both ends of the tooling to remove or insert the tooling.

[0013] To further address the technical problem addressed by this invention, the present invention provides a motor stator coating device in which the disassembly and assembly assembly includes two disassembly and assembly units, namely a first disassembly and assembly unit and a second disassembly and assembly unit; the first disassembly and assembly unit and the second disassembly and assembly unit maintain the same height direction when performing the work position of pulling out or inserting the tool; a position interchange structure is provided between the first disassembly and assembly unit and the second disassembly and assembly unit, and when the work positions of the first disassembly and assembly unit and the second disassembly and assembly unit switch to each other and the work positions overlap, the two are staggered in the height direction to avoid mutual collision and interference.

[0014] To further address the technical problem addressed by this invention, a motor stator coating device is provided. The position interchange structure includes a guide plate mounted on a frame, and a first sliding module and a second sliding module arranged vertically. The guide plate has a guide groove with an upward undulating trajectory. The first disassembly / assembly unit is fixedly connected to the lower-positioned first sliding module, and the first disassembly / assembly unit is only driven by the first sliding module to perform horizontal sliding transfer. The second disassembly / assembly unit is slidably connected to the upper-positioned second sliding module in the vertical direction, and the second disassembly / assembly unit is provided with a guide wheel or guide rod that engages in the guide groove. When the second disassembly / assembly unit and the first disassembly / assembly unit slide towards each other and intersect, the second disassembly / assembly unit undulates upward under the guidance of the guide groove's trajectory, thereby crossing and offsetting the first disassembly / assembly unit in the height direction.

[0015] To further address the technical problem addressed by this invention, a motor stator coating device is provided. The slider of the second sliding module is equipped with a horizontal slide table, and a lifting platform is located above the horizontal slide table. A lifting guide rod is provided on the lifting platform, and a guide hole is provided on the horizontal slide table to slide and engage with the lifting guide rod. The second disassembly / assembly unit is mounted on the lifting platform to achieve vertical sliding. The trajectory of the guide groove includes a horizontal section and an upwardly protruding undulating section located in the middle of the horizontal section. When the guide wheel or guide rod reaches the undulating section, it drives the second disassembly / assembly unit to rise, thus avoiding the first disassembly / assembly unit.

[0016] To further address the technical problem addressed by this invention, a motor stator coating apparatus is provided. The return conveyor area corresponding to the loading / unloading device has two adjacent workstations. Each workstation includes a lifting assembly and a stator clamping assembly. Both workstations are configured to perform tooling removal and insertion operations. The first and second disassembly / assembly units are configured to alternately reciprocate between the two workstations, performing the following cyclical action: after one disassembly / assembly unit removes the completed tooling at the current workstation, the stator clamping assembly releases the processed stator for manual replacement with an unprocessed motor stator; simultaneously, the disassembly / assembly unit carries the tooling towards... Another station moves and inserts the tooling into the unprocessed motor stator located at the other station; after insertion, the tooling and the unprocessed motor stator are lowered by the lifting assembly and stator clamping assembly of the corresponding station and placed on the return conveyor line for transport away. The station then receives the processed tooling transported by the return conveyor line to await the next pull-out operation; the first disassembly unit and the second disassembly unit are configured to operate synchronously and alternately, that is: when one disassembly unit performs a pull-out operation at one station, the other disassembly unit performs an insertion operation at another station; after completing the current operation, the two move towards each other and are staggered by the position interchange structure during the movement towards each other.

[0017] To further address the technical problem addressed by this invention, the present invention provides a motor stator coating apparatus in which the lifting assembly is divided into two groups spaced apart: a first lifting assembly located at one station and a second lifting assembly located at the other station; the stator clamping assembly is also divided into two groups: a first stator clamping assembly located at one station and a second stator clamping assembly located at the other station; both the first and second lifting assemblies include two lifting units arranged opposite each other, and each lifting unit includes a lifting block. The first stator clamping assembly and the second stator clamping assembly both include a mounting base and a stator receiving groove located on the top of the mounting base. The mounting base is also provided with stator fixing claws located on both sides of the stator receiving groove. The stator fixing claws are connected to a clamping driver for driving them to open and close. When the stator clamping assembly rises and lifts the motor stator, the motor stator falls into the stator receiving groove, and the stator fixing claws are used to clamp and fix the motor stator.

[0018] To further address the technical problem to be solved by the present invention, the present invention provides a motor stator coating device in which the first disassembly unit and the second disassembly unit both include a chuck for clamping the end of the tooling and a drive cylinder for driving the jaws of the chuck to open and close.

[0019] To further address the technical problem addressed by this invention, a motor stator coating device is provided. The tooling includes a left guide rod and a right guide rod detachably connected together. The inner end of the left guide rod is provided with a first limiting plate, the inner side of which is provided with a first protrusion, and a insertion rod is located at the center of the first protrusion. The inner end of the right guide rod is provided with a second limiting plate, the inner side of which is provided with a second protrusion, and a insertion hole is located at the center of the second protrusion. The insertion rod is detachably inserted into the insertion hole, such that the first and second protrusions are respectively inserted into the left and right sides of the central hole of the motor stator, and the motor stator is clamped and fixed between the first and second limiting plates.

[0020] To further address the technical problems addressed by this invention, the present invention provides a motor stator coating device in which the coating conveying line includes a first screw and a second screw arranged side-by-side, and a first conveying driver for driving the first screw and the second screw to rotate synchronously; the first screw and the second screw have the same thread direction and the same rotation direction, or the first screw and the second screw have opposite thread directions and opposite rotation directions; the return conveying line includes a third screw and a fourth screw arranged side-by-side, and a second conveying driver for driving the third screw and the fourth screw to rotate synchronously; the third screw and the fourth screw have the same thread direction and the same rotation direction, or the third screw and the fourth screw have opposite thread directions and opposite rotation directions; the left guide rod and the right guide rod of the tooling can be placed on the corresponding screw respectively, and both the left guide rod and the right guide rod of the tooling are provided with threads that can cooperate with the corresponding screw, so as to convey forward when the corresponding screw rotates.

[0021] To further address the technical problems addressed by this invention, the present invention provides a motor stator coating device in which the first screw, the second screw, and the tooling are all made of conductive material; the electrostatic coating device includes a spray chamber, an electrostatic paint spraying structure and a heating structure disposed within the spray chamber, and an energizing structure; the energizing structure is used to energize the first screw and the second screw of the coating conveyor line, thereby energizing the motor stator on the conductive tooling to cooperate in completing the electrostatic spraying.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. This invention integrates a high-precision semi-automatic loading and unloading system and a mechanical insertion and removal structure. The invention constructs a loading and unloading system that integrates a lifting assembly, a stator clamping assembly, and a three-jaw chuck assembly / disassembly assembly. Through the lifting and clamping of the mechanical structure, the mechanized extraction and insertion of long-shaft tooling into the motor stator is achieved. This design effectively replaces the traditional, laborious, and easily damaging manual insertion and removal operation, significantly reducing the labor intensity of operators and ensuring the concentricity of the tooling and stator hole positions, thus significantly improving assembly accuracy and the basic automation level of the production line.

[0024] 2. This invention pioneers a dynamic collaborative system with dual workstations and dual components that can be interchanged. The device features two equivalent workstations in the loading and unloading area, and utilizes a position-interchangeable structure with undulating guide grooves and a lifting platform. This allows the first and second assembly / disassembly components to avoid collisions by being aligned at the same height during operation and staggered when interleaving. This design enables the equipment to operate synchronously and alternately, overlapping the time consumed by mechanical actions with the time consumed by manual handling of stators on the time axis. This completely eliminates the drawbacks of traditional equipment such as "downtime waiting for manual handling" and "time consumption at a single workstation," significantly shortening the loading and unloading cycle and multiplying the overall production pace.

[0025] 3. This invention designs a screw conveying and assembly system that combines mechanical conveying and electrical conductivity. A detachable conductive fixture securely clamps the stator via limiting discs and bosses at both ends and is directly placed on a conductive screw with unidirectional or counter-directional threads. The thrust of the threaded engagement achieves smooth, continuous step-by-step conveying. Simultaneously, the energizing structure directly supplies power to the fixture and stator through the screw, integrating material conveying and the energizing requirements of electrostatic spraying. This not only simplifies the overall transmission and conductive mechanism but also ensures high quality and stability of the electrostatic insulating coating. Furthermore, a transfer component is used as a buffer, significantly reducing material transfer time and improving efficiency. Attached Figure Description

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 This is a 3D structural diagram of the transfer component.

[0029] Figure 3 This is an exploded view of the tooling;

[0030] Figure 4 This is a three-dimensional structural diagram of the loading and unloading device;

[0031] Figure 5 This is a three-dimensional structural diagram of the stator clamping assembly;

[0032] Figure 6 This is an exploded view of the disassembled components and interchangeable structures;

[0033] Figure 7 This is a schematic diagram of the two assembly / disassembly units exchanging workstations. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 7 As shown, this embodiment provides a motor stator coating apparatus. The apparatus includes a frame 1, on which a coating conveyor line 2 and a return conveyor line 3 are rationally arranged to form a material circulation channel. Several circulating conveying fixtures 4 are placed on the coating conveyor line 2 and the return conveyor line 3. These fixtures 4 serve as carriers for detachably mounting the motor stator to be processed.

[0036] like Figure 1 , Figure 2As shown, to achieve closed-loop flow between the two conveyor lines, transfer components 5 are provided between the output end of the return conveyor line 3 and the input end of the coating conveyor line 2, and between the output end of the coating conveyor line 2 and the input end of the return conveyor line 3, to handle the cross-line transfer of the tooling 4 between the corresponding conveyor lines. Specifically, the transfer component 5 includes a temporary storage platform 51 for temporarily storing the tooling 4, and a robotic arm 52 mounted above the temporary storage platform 51 for transferring materials (in this embodiment, the robotic arm 52 is preferably a cylinder gripper driven by a two-dimensional or three-dimensional sliding module). The robotic arm 52 is further subdivided into: a first transfer robotic arm 521 responsible for gripping and placing between the coating conveyor line 2 and the temporary storage platform 51 (preferably composed of two rods), and a second transfer robotic arm 522 responsible for gripping and placing between the temporary storage platform 51 and the return conveyor line 3. Normally, the coating conveyor line 2 and the electrostatic coating device 6 are kept running, while the return conveyor line 3 may be temporarily stopped. In this case, the coated material can be placed into the temporary storage platform 5 first. Of course, due to the increased span between the return conveyor line 3 and the coating conveyor line 2, setting up a temporary storage platform 51 and two transfer robots can greatly shorten the material transfer time and improve efficiency.

[0037] like Figure 1 , Figure 2 As shown, in the conveying structure of tooling 4, the coating conveyor line 2 includes a first screw 21 and a second screw 22 arranged side by side, and a first conveyor driver (such as a motor, not shown in the figure) that drives both to rotate synchronously. The threads 43 of the first screw 21 and the second screw 22 have the same direction of rotation and the same direction of screw rotation (or they have opposite directions of rotation and the same direction of screw rotation). Similarly, the return conveyor line 3 includes a third screw 31 and a fourth screw 32 arranged side by side, driven synchronously by a second conveyor driver.

[0038] To perfectly integrate with the aforementioned screw conveyor line, fixture 4 is designed to include a left guide rod 41 and a right guide rod 42 that are detachably connected together. The left guide rod 41 and right guide rod 42 can be stably placed and supported on their respective screws, and both guide rods have threads 43 machined on their bodies to mate with the corresponding screws. When the driver rotates the screw, the meshing thrust of the threads 43 propels fixture 4 smoothly forward.

[0039] like Figure 1As shown, in the coating process section, an electrostatic coating device 6 is installed on the coating conveyor line 2. This electrostatic coating device 6 includes a spray chamber, an electrostatic paint spraying structure (such as a spray gun, not shown in the figure) and a heating structure (not shown in the figure) located within the spray chamber, and a crucial power supply structure (this part is prior art, and specific details are not elaborated). To facilitate the electrostatic coating process, the first screw 21, the second screw 22, and the tooling 4 are all made of conductive materials (e.g., the screws are made of steel, and the tooling 4 is made of copper). During the coating operation, the power supply structure energizes the first screw 21 and the second screw 22 of the coating conveyor line 2. The current is conducted through the conductive tooling 4, thereby energizing the motor stator mounted on it, which then works in conjunction with the spray gun to achieve high-quality electrostatic adsorption spraying. Simultaneously, heating is used to melt the coating material. Furthermore, below the return conveyor line 3 and upstream of the subsequent loading and unloading device 7, a heat dissipation structure 8 (preferably a cooling fan) is provided to provide timely forced cooling of the tooling 4 and the motor stator after heat curing.

[0040] like Figure 3 As shown, for fixing the motor stator, the inner end of the left guide rod 41 of the tooling 4 is provided with a first limiting plate 411. The inner side of the first limiting plate 411 protrudes to form a first boss 412, and the center of the first boss 412 is provided with an insert rod 413 along the axial direction. Correspondingly, the inner end of the right guide rod 42 is provided with a second limiting plate 421, the inner side of which protrudes to form a second boss 422, and the center of the second boss 422 is provided with an insertion hole 423. During assembly, the insert rod 413 is detachably inserted into the insertion hole 423. To ensure the stability of the connection, this insertion and removal process has a certain frictional damping. After assembly and closing, the first boss 412 and the second boss 422 are accurately inserted into the left and right sides of the center hole of the motor stator for radial positioning, and the motor stator is clamped and fixed between the two by the first limiting plate 411 and the second limiting plate 421 on both sides.

[0041] The core innovation of this device lies in the loading and unloading device 7 installed on the return conveyor line 3. This area is divided into two adjacent workstations, both of which are configured to independently perform the removal and insertion operations of the tooling 4.

[0042] like Figure 4 As shown, the loading and unloading device 7 mainly consists of a lifting assembly 71, a stator clamping assembly 72, and a disassembly and assembly assembly 73.

[0043] The lifting assembly 71 is divided into two groups arranged at intervals: a first lifting assembly 711 located at one station, and a second lifting assembly 712 located at the other station. Each lifting assembly group includes two lifting units arranged opposite each other on the left and right. Each lifting unit includes a lifting block 71a and a lifting drive 71b (such as a cylinder) that drives its lifting and lowering. To ensure support stability, a V-shaped groove 71a1 is provided at the upper end of the lifting block 71a to accurately accommodate and support the end of the tooling 4 (i.e., the left guide rod 41 or the right guide rod 42).

[0044] The stator clamping assembly 72 is also divided into a first stator clamping assembly 721 and a second stator clamping assembly 722. For example... Figure 5 As shown, the specific structure of the first stator clamping assembly 721 and the second stator clamping assembly 722 includes a mounting base 72a and a stator receiving groove 72b located on its top. The stator receiving groove 72b is preferably an arc-shaped groove with a certain width. Stator fixing claws 72c are also provided on both sides of the groove on the mounting base 72a (the stator receiving groove 72b has a clearance groove in the middle for avoiding the stator fixing claws 72c), and their opening and closing are controlled by the clamping driver 72d. When the stator clamping assembly 72 rises and lifts the motor stator, the stator falls securely into the stator receiving groove 72b, and the stator fixing claws 72c close to achieve a reliable fixation.

[0045] The disassembly and assembly components 73 located on both sides of the stator clamping assembly 72 are used to perform the core action of clamping both ends of the fixture 4 and inserting / removing it. The disassembly and assembly components 73 include a first disassembly and assembly unit 731 and a second disassembly and assembly unit 732, both of which are equipped with a chuck 73a (preferably a three-jaw chuck that can automatically center during clamping) for clamping the ends of the fixture 4 (i.e., the left guide rod 41 or the right guide rod 42) and a drive cylinder 73b for driving the opening and closing of the chuck jaws.

[0046] To achieve efficient collaboration between the two workstations, this device incorporates a position interchange structure 74. When the tooling 4 is being pulled out or inserted, the first assembly / disassembly unit 731 and the second assembly / disassembly unit 732 maintain a consistent height to precisely align the tooling 4. When the two need to switch workstations and intersect, the position interchange structure 74 allows for dynamic misalignment in the height direction, preventing physical collisions and interference.

[0047] Specifically, such as Figure 6 , Figure 7 As shown, the position interchange structure 74 includes a guide plate 741 fixed on the frame 1, and a first sliding module 742 (preferably a ball screw sliding module) and a second sliding module 743 arranged vertically on the vertical surface. The guide plate 741 is machined with a guide groove 7411 having an upward undulating trajectory.

[0048] The first assembly / disassembly unit 731 is rigidly connected to the lower-positioned first sliding module 742, so it only slides horizontally when transferring to a different work station.

[0049] The second assembly / disassembly unit 732 is slidably connected to the higher-positioned second sliding module 743 in a vertical direction. The connection is as follows: a horizontal slide 745 is fixedly mounted on the slider of the second sliding module 743, and a lifting platform 746 is mounted above the horizontal slide 745. A lifting guide rod 747 is fixedly connected to the bottom of the lifting platform 746, which passes downwards and slides within a guide hole 7451 opened on the horizontal slide 745. The second assembly / disassembly unit 732 is entirely mounted on this lifting platform 746, thus gaining independent lifting freedom. Furthermore, a guide wheel 744 (or guide rod) extends from the side of the second assembly / disassembly unit 732 and fits into a guide groove 7411. The trajectory of the guide groove 7411 includes horizontal sections 741a on both sides and an upwardly protruding undulating section 741b in the middle.

[0050] Relying on the above structure, this device achieves an extremely high assembly cycle. The first assembly / disassembly unit 731 and the second assembly / disassembly unit 732 are configured to reciprocate alternately between two workstations, performing the following synchronously interleaved action cycle:

[0051] After the machined fixture 4 (referring to fixture 4 plus the machined motor stator on it) arrives at the current station, the corresponding lifting assembly 71 and stator clamping assembly 72 rise together, lifting the fixture and motor stator and fixing the motor stator. One of the disassembly / assembly units clamps the guide rods at both ends of the fixture and pulls the fixture outward. When one of the disassembly / assembly units (such as the first disassembly / assembly unit 731) successfully pulls out the machined fixture 4 at the current station, the corresponding stator clamping assembly 72 releases its grippers and releases the machined stator, leaving sufficient time for manual replacement with the unmachined motor stator. At the same time, the first disassembly / assembly unit 731 does not need to wait for manual operation, but directly carries the pulled-out fixture 4 to another station and quickly inserts the fixture 4 into the unmachined motor stator that has been pre-placed at that other station. After the insertion operation is completed, the lifting assembly 71 and stator clamping assembly 72 corresponding to this station descend as a whole, smoothly placing the assembled tooling 4 and the unprocessed motor stator onto the return conveyor line 3 for transport away. The vacated station then receives the next processed tooling 4 transported from upstream of the return conveyor line 3, ready to receive the next extraction operation. Of course, the stator clamping assembly 72 of the upstream station needs to descend in a timely manner to avoid the processed tooling 4 to be transferred to the stator clamping assembly 72 of the downstream station.

[0052] In this dynamic cycle, the first disassembly / assembly unit 731 and the second disassembly / assembly unit 732 always maintain synchronous and staggered operations: that is, when one disassembly / assembly unit performs a "pull-out" operation at a certain station, the other disassembly / assembly unit must perform an "insertion" operation at another station. After completing their respective current actions, they begin to move towards each other. When the second disassembly / assembly unit 732 moves to the intersection area, its guide wheel 744 follows the guide groove 7411 into the undulating section 741b, forcibly driving the lifting platform 746 and the entire second disassembly / assembly unit 732 to lift upwards. As a result, the second disassembly / assembly unit 732 perfectly crosses over and avoids the first disassembly / assembly unit 731, which is moving horizontally in the vertical direction, in the height direction. After the crossing is completed, the guide wheel 744 falls back to the horizontal section 741a on the other side, and the second disassembly / assembly unit 732 returns to a uniform working height to start the next round of operations. This design achieves deep overlap between mechanical insertion / removal actions and manual material changing actions on the time axis, greatly improving the automation throughput efficiency of the equipment.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A motor stator coating device, characterized in that: The system includes a frame (1), on which a coating conveyor line (2), a return conveyor line (3), and several tooling fixtures (4) placed on the coating conveyor line (2) and the return conveyor line (3) for detachably mounting the motor stator to be processed; a transfer assembly (5) for transferring the tooling fixtures (4) between the output end of the return conveyor line (3) and the input end of the coating conveyor line (2), and between the output end of the coating conveyor line (2) and the input end of the return conveyor line (3) are provided; the coating conveyor line (2) is provided with an electrostatic coating device (6) for electrostatic coating of the motor stator, and the return conveyor line (3) is provided with a loading and unloading device (7); the loading and unloading device (7) includes: A liftable lifting assembly (71) located below the return conveyor line (3) and used to lift the tooling (4). A liftable stator clamping assembly (72) is provided below the return conveyor line (3) and corresponding to the position of the lifting assembly (71) to lift and clamp the motor stator. And disassembly and assembly (73) provided on both sides of the stator clamping assembly (72) for clamping both ends of the tooling (4) to pull out the tooling (4) or insert the tooling (4).

2. The motor stator coating device according to claim 1, characterized in that: The disassembly and assembly assembly (73) includes two disassembly and assembly units, namely a first disassembly and assembly unit (731) and a second disassembly and assembly unit (732); when the first disassembly and assembly unit (731) and the second disassembly and assembly unit (732) are in the same height direction, they are in the same working position for pulling out or inserting the tool (4); a position interchange structure (74) is provided between the first disassembly and assembly unit (731) and the second disassembly and assembly unit (732), and when the working positions of the first disassembly and assembly unit (731) and the second disassembly and assembly unit (732) are switched, they are staggered in the height direction to avoid mutual collision and interference.

3. The motor stator coating device according to claim 2, characterized in that: The position interchange structure (74) includes a guide plate (741) mounted on the frame (1), and a first sliding module (742) and a second sliding module (743) arranged vertically. The guide plate (741) has a guide groove (7411) with an upward undulating trajectory. The first disassembly / assembly unit (731) is fixedly connected to the lower first sliding module (742), and the first disassembly / assembly unit (731) is only driven by the first sliding module (742) to perform horizontal sliding transfer. Unit (732) is slidably connected to the second sliding module (743) at a higher position in the vertical direction, and the second disassembly unit (732) is provided with a guide wheel (744) or guide rod that cooperates in the guide groove (7411); when the second disassembly unit (732) and the first disassembly unit (731) slide towards each other and intersect, the second disassembly unit (732) rises and falls under the trajectory guidance of the guide groove (7411) so as to cross and offset the first disassembly unit (731) in the height direction.

4. The motor stator coating device according to claim 3, characterized in that: The second sliding module (743) has a horizontal slide (745) on its slider, and a lifting platform (746) is provided above the horizontal slide (745). The lifting platform (746) has a lifting guide rod (747) on it, and a guide hole (7451) is provided on the horizontal slide (745) to slide with the lifting guide rod (747). The second disassembly unit (732) is installed on the lifting platform (746) to realize the up and down sliding of the second disassembly unit (732). The trajectory of the guide groove (7411) includes a horizontal section (741a) and an upward undulating section (741b) located in the middle of the horizontal section (741a). When the guide wheel (744) or guide rod runs to the undulating section (741b), it drives the second disassembly unit (732) to rise to avoid the first disassembly unit (731).

5. A motor stator coating apparatus according to claim 2 or 3, characterized in that: The loading and unloading device (7) has two adjacent workstations in the return conveyor line (3) area. Each workstation includes a lifting assembly (71) and a stator clamping assembly (72). Both workstations are configured to perform the removal and insertion of tooling (4). The first disassembly unit (731) and the second disassembly unit (732) are configured to move back and forth between the two workstations and perform the following action cycle: after one disassembly unit removes the finished tooling (4) at the current workstation, the stator clamping assembly (72) releases the finished stator for manual replacement with an unfinished motor stator. At the same time, the disassembly unit carries the tooling (4) to another workstation and inserts the tooling (4) into the unfinished motor stator located at the other workstation. After insertion, the tooling (4) and the unprocessed motor stator are lowered by the lifting assembly (71) and stator clamping assembly (72) of the corresponding station and placed on the return conveyor line (3) for transport away. The station then receives the processed tooling (4) transported by the return conveyor line (3) to wait for the next pull-out operation. The first disassembly unit (731) and the second disassembly unit (732) are configured to operate synchronously and alternately, that is, when one of the disassembly units performs a pull-out operation at one station, the other disassembly unit performs an insertion operation at another station. After completing the current operation, the two move towards each other and are staggered by the position interchange structure (74) during the movement towards each other.

6. The motor stator coating device according to claim 5, characterized in that: The lifting assembly (71) is divided into two groups spaced apart: a first lifting assembly (711) located at one station and a second lifting assembly (712) located at the other station. The stator clamping assembly (72) is also divided into two groups: a first stator clamping assembly (721) located at one station and a second stator clamping assembly (722) located at the other station. Both the first lifting assembly (711) and the second lifting assembly (712) include two lifting units arranged opposite each other. Each lifting unit includes a lifting block (71a) and a lifting driver (71b) for driving the lifting block (71a) to rise and fall. The upper part of the lifting block (71a)... The end is provided with a V-shaped groove (71a1) for accommodating the end of the tooling (4); the first stator clamping assembly (721) and the second stator clamping assembly (722) both include a mounting base (72a) and a stator receiving groove (72b) provided on the top of the mounting base (72a). The mounting base (72a) is also provided with stator fixing claws (72c) located on both sides of the stator receiving groove (72b). The stator fixing claws (72c) are connected to a clamping driver (72d) for driving their opening and closing. When the stator clamping assembly (72) rises and lifts the motor stator, the motor stator falls into the stator receiving groove (72b), and the stator fixing claws (72c) are used to clamp and fix the motor stator.

7. The motor stator coating device according to claim 2, characterized in that: The first disassembly unit (731) and the second disassembly unit (732) both include a chuck (73a) for gripping the end of the tooling (4) and a drive cylinder (73b) for driving the jaws of the chuck (73a) to open and close.

8. The motor stator coating device according to claim 1, characterized in that: The tooling (4) includes a left guide rod (41) and a right guide rod (42) that are detachably connected together. The inner end of the left guide rod (41) is provided with a first limiting plate (411), and the inner side of the first limiting plate (411) is provided with a first boss (412). The center of the first boss (412) is provided with an insertion rod (413). The inner end of the right guide rod (42) is provided with a second limiting plate (421), and the inner side of the second limiting plate (421) is provided with a second boss (422). The center of the second boss (422) is provided with an insertion hole (423). The insertion rod (413) is detachably inserted into the insertion hole (423), and the first boss (412) and the second boss (422) are respectively inserted into the left and right sides of the center hole of the motor stator, and the motor stator is clamped and fixed between the two by the first limiting plate (411) and the second limiting plate (421).

9. The motor stator coating device according to claim 8, characterized in that: The coating conveyor line (2) includes a first screw (21) and a second screw (22) arranged side by side, and a first conveyor driver for driving the first screw (21) and the second screw (22) to rotate synchronously; the threads (43) of the first screw (21) and the second screw (22) have the same direction of rotation and the same direction of rotation, or the threads (43) of the first screw (21) and the second screw (22) have opposite directions of rotation and opposite directions of rotation; the return conveyor line (3) includes a third screw (31) and a fourth screw (32) arranged side by side, and a first conveyor driver for driving the third screw (31) The second conveying driver that rotates synchronously with the third screw (31) and the fourth screw (32); the threads (43) of the third screw (31) and the fourth screw (32) have the same direction of rotation and the same direction of rotation, or the threads (43) of the third screw (31) and the fourth screw (32) have opposite directions of rotation and opposite directions of rotation; the left guide rod (41) and the right guide rod (42) of the tooling (4) can be placed on the corresponding screw respectively, and the left guide rod (41) and the right guide rod (42) of the tooling (4) are provided with threads (43) that can cooperate with the corresponding screw, so as to convey forward when the corresponding screw rotates.

10. The motor stator coating apparatus according to claim 9, characterized in that: The first screw (21), the second screw (22), and the tooling (4) are all made of conductive material; the electrostatic coating device (6) includes a spray chamber, an electrostatic coating spraying structure and a heating structure located in the spray chamber, and an energizing structure; the energizing structure is used to energize the first screw (21) and the second screw (22) of the coating conveyor line (2), thereby energizing the motor stator on the conductive tooling (4) to cooperate in completing the electrostatic spraying.

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