Optical axis rotor skewed pole maintaining device and maintaining method

Abstract

The invention relates to the technical field of motor production, in particular to an optical axis rotor skewed pole maintaining device and maintaining method. Comprising a press-fitting support, a station switching structure, a bearing structure, a first fixing structure and a second fixing structure are arranged on the press-fitting support, and the station switching structure is used for driving stacked iron cores to be transferred among a feeding station, a press-fitting station and a discharging station; the bearing structure is arranged on the switching structure and used for bearing the heated stacked iron cores; the first fixing structure is used for fixing and limiting all the iron cores when the stacked iron cores are placed on the bearing structure; the second fixing structure is used for fixing and limiting all the iron cores when the stacked iron cores are transferred from the feeding station to the press-fitting station. The maintaining device is simple in structure and convenient to use, the stability of stacked iron cores from heating to press fitting can be effectively maintained, it is ensured that stacked skewed poles are always maintained to meet the set requirement, the machining efficiency of the optical axis rotor is greatly improved, and the overall automation degree is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor production, in particular to a light shaft rotor skew pole maintaining device and method. BACKGROUND

[0002] With the rapid popularization of new energy electric vehicles, the demand for new energy motors is diversified. As an important component of the entire motor, the structure of the rotor is becoming more and more diversified. The rotor usually includes a rotor shaft, an end plate, a shaft sleeve, and a core sleeved and fixed on the rotor shaft. The rotor shaft is divided into a flat key rotor shaft and a light shaft rotor shaft. The flat key rotor shaft refers to the shaft body of the rotor shaft, which is provided with a protruding flat key structure. The core of the flat key rotor shaft is positioned and assembled with the shaft body of the flat key rotor shaft by using a flat key. The machining quality of the incoming material is guaranteed for the mechanical skew pole, and the rotor assembly line does not need to check the mechanical skew pole of the rotor assembly. The shaft body of the light shaft rotor shaft is smooth, and the core of the light shaft rotor shaft is in interference fit with the shaft body of the light shaft rotor shaft, and is assembled by "hot fitting".

[0003] When the light shaft rotor shaft is produced, the core is first stacked and pressed layer by layer at a predetermined angle, then heated, and then the light shaft rotor shaft is pressed in at high temperature. After cooling, the assembly is completed. For example, the prior art discloses a motor rotor visual assembly production line, which comprises a shaft sleeve automatic feeding device, an end plate automatic feeding device, a single-arm hydraulic machine, a magnetic steel embedding device, a rotor core tray, a rotating shaft tray, a press-fitting finished product tray, a robot, a PLC, an industrial camera, a ring light source and an industrial tablet computer. The robot, the PLC, the single-arm hydraulic machine, the shaft sleeve automatic feeding device, the rotor core tray, the rotating shaft tray, the press-fitting finished product tray, the end plate automatic feeding device and the magnetic steel embedding device constitute a robot execution system. The industrial camera, the ring light source and the industrial tablet computer constitute a robot vision system. The ring light source is fixed on the industrial camera, and the industrial camera and the ring light source are coaxially installed on the mechanical arm of the robot. When the workpiece position is detected, the industrial camera is perpendicular to the workpiece surface. The industrial camera is connected with the industrial tablet computer through a USB interface, and the industrial tablet computer is connected with the PLC through an industrial bus. The PLC controls the robot to perform corresponding actions, and the PLC is connected with the single-arm hydraulic machine, the shaft sleeve automatic feeding device, the end plate automatic feeding device and the magnetic steel embedding device. The production line detects the workpiece position information in real time through the robot vision system, calculates the workpiece position deviation information and sends it to the robot for real-time high-precision position correction. The production line effectively solves the problems of poor product quality and low efficiency caused by workpiece position deviation in the assembly process, avoids the waste of human resources caused by additional manual monitoring due to the position deviation of the robot when grabbing and placing the workpiece, significantly reduces the labor force, and realizes the intelligent and automatic production of the motor rotor.

[0004] But the production line also has some problems, or some key parts of the language is not clear. In fact, the most important light shaft rotor production process is the core of the handling and stacking operation, the core of each other need to be arranged according to a certain angle of stacking, that is, the mechanical skew of the rotor. According to the set angle of all the core stacking, the core stacking needs to be heated, the purpose of heating is to make the core expand, facilitate the subsequent light shaft rotor shaft pressure. The core stacking needs to be carried to the pressure assembly station for the pressure assembly of the light shaft rotor shaft. The carrying process needs to maintain the stacking core according to the set angle of stacking, that is, before the pressure assembly of the light shaft rotor shaft, the skew of the rotor is always set. But in the above production line, the production line does not give the method of maintaining the skew of the core before the pressure assembly of the rotor shaft. In the actual production process, the core stacking is easy to rotate and damage the skew during the transfer process. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art and provide a light shaft rotor skew maintaining device and method.

[0006] The technical scheme of the present application is as follows: a light shaft rotor skew maintaining device, comprising a pressure assembly support, the pressure assembly support is provided with: a station switching structure, the station switching structure comprises at least one feeding station, one pressure assembly station and one discharging station, and the station switching structure is used for driving the stacked core to transfer between the feeding station, the pressure assembly station and the discharging station; a bearing structure, the bearing structure is arranged on the switching structure and used for bearing the heated stacked core; a first fixing structure, the first fixing structure is used for fixing and limiting all the cores when the stacked core is placed on the bearing structure; a second fixing structure, the second fixing structure is used for fixing and limiting all the cores when the stacked core is transferred from the feeding station to the pressure assembly station.

[0007] According to the light shaft rotor skew maintaining device provided by the present application, the station switching structure comprises: a turntable, the turntable is a plate-shaped structure driven to rotate around the vertical axis by the rotary motor on the pressure assembly support, and the turntable is provided with at least one feeding station, one pressure assembly station and one discharging station.

[0008] According to the light shaft rotor skew maintaining device provided by the present application, the first fixing structure comprises: an expansion sleeve seat, the expansion sleeve seat is connected to the lower end surface of the turntable in vertical lifting mode; an expansion sleeve, the lower end of the expansion sleeve is fixed on the expansion sleeve seat, and the upper end penetrates through the turntable and the bearing structure in vertical mode, and the expansion sleeve is a cylindrical structure which can expand or contract radially along the core middle hole under the internal extrusion. The sleeve core shaft is sleeved on the sleeve, and the upper end of the sleeve core shaft is an inverted conical structure with a large diameter at the top and a small diameter at the bottom; The sleeve cylinder is fixed on the sleeve seat, and the output end of the sleeve cylinder is connected with the lower end of the sleeve core shaft, and is used for driving the sleeve core shaft to move vertically.

[0009] According to the optical shaft rotor inclined pole maintaining device provided by the application, the pressing support is further provided with: The vertical guide rail is a guide structure located below the rotating disc, and the sleeve seat is vertically movably connected to the vertical guide rail; The lifting oil cylinder is used for driving the sleeve seat to move up and down along the vertical guide rail.

[0010] According to the optical shaft rotor inclined pole maintaining device provided by the application, the second fixing structure comprises: The at least two groups of mounting seats are movably connected to the rotating disc by the downward pressing cylinder, and the at least two groups of mounting seats are symmetrically arranged on both sides of the corresponding bearing structure with the axis of the sleeve core shaft as the center. The swing arm is movably connected to the mounting seat by the rotary oil cylinder and can rotate around the vertical axis at one end, and extends in the horizontal direction at the other end.

[0011] According to the optical shaft rotor inclined pole maintaining device provided by the application, the second fixing structure comprises two groups of mounting seats, and the two groups of mounting seats are symmetrically arranged on both sides of the corresponding bearing structure with the axis of the sleeve core shaft as the center.

[0012] According to the optical shaft rotor inclined pole maintaining device provided by the application, the bearing structure comprises a bearing base; the bearing base is a ring-shaped structure which is sleeved on the sleeve and rests on the rotating disc at the lower end surface and is used for bearing the stacked cores at the upper end surface.

[0013] The application also relates to an optical shaft rotor inclined pole maintaining method, which is operated according to the optical shaft rotor inclined pole maintaining device. After the stacked core is heated, the robot carries the stacked core to the bearing structure; The first fixing structure fixes the stacked core after the stacked core is placed on the bearing structure; The robot is separated from the stacked core, and the second fixing structure fixes the stacked core; The first fixing structure is separated from the contact with the stacked core; The stacked core is detected, if the inclined pole of the stacked core meets the set requirements, the work position switching structure switches the stacked core from the feeding work position to the pressing work position, and the inclined pole maintaining of the optical shaft rotor stacked core is completed.

[0014] According to the optical axis rotor inclined pole maintaining method provided in the application, the method for fixing the laminated core by the first fixing structure after the laminated core is placed on the bearing structure comprises the following steps: a robot carries the heated laminated core to the expansion sleeve of the first fixing structure, and drives the expansion sleeve shaft inside the expansion sleeve to move downwards, so that the big end of the expansion sleeve shaft moves in the expansion sleeve, and the expansion sleeve is expanded to tightly fix the outer laminated core.

[0015] According to the optical axis rotor inclined pole maintaining method provided in the application, the method for fixing the laminated core by the second fixing structure comprises the following steps: before the laminated core enters the bearing structure, the swing arm of the second fixing structure is driven to rotate to make the space above the bearing structure empty; after the laminated core enters the bearing structure, the swing arm is driven to rotate above the laminated core on the bearing structure; and the swing arm is driven to move downwards to press the laminated core.

[0016] According to the optical axis rotor inclined pole maintaining method provided in the application, the method for switching the laminated core from the feeding station to the pressing station by the station switching structure comprises the following steps: the expansion sleeve shaft is driven to move upwards, so that the big end of the expansion sleeve shaft extends out of the expansion sleeve, the expansion sleeve is contracted to be separated from the laminated core, the expansion sleeve is driven to move downwards until the expansion sleeve is completely below the station switching structure, and the station switching structure is driven to rotate around the vertical axis to make the bearing structure switch from the feeding station to the pressing station.

[0017] The application has the following advantages: 1. The maintaining device can maintain the inclined pole of the optical axis rotor after the laminated core is heated and before the laminated core is pressed, that is, the placing angle of each laminated core is qualified, and different fixing structures are used to fix the laminated core in different states, so that the inclined pole of the laminated core is completely qualified when the laminated core is pressed, the overall structure is simple, the use is convenient, the production efficiency of the optical axis rotor is greatly improved, the automation degree is very high, and the application has great popularization value; 2. The station switching structure comprises a rotating disc, the rotating disc can rotate around the vertical axis, the switching between the feeding station, the pressing station and the discharging station can be realized by rotating the rotating disc, the operation is very simple, the use is very convenient, and the space occupation is small; 3. The first fixing structure fixes the laminated core by the expansion sleeve, the expansion sleeve fixes the laminated core from the middle hole of the laminated core, does not affect the carrying of the laminated core by the robot, the operation method is simple, the fixing of the laminated core is very stable, and the inclined pole of the laminated core is not damaged by any shaking; 4. The expansion sleeve can be separated from the rotating disc by vertical movement, can be separated from the rotating disc to avoid interference with the rotating disc when the station switching is needed, that is, the operation of the whole device can be realized by one set of expansion sleeve structure, and the operation is very simple. 5、The second fixing structure of the application is used to fix the stacked iron core in a pressing manner, the swing arm can rotate and move up and down, can adapt to the fixing of stacked iron cores of different heights, has excellent applicability, is more widely applicable, is easy to operate and convenient to use; 6、The mounting seat of the application has two groups arranged opposite to each other, occupies small space, is more stable in pressing the stacked iron core, and will not have the problem of unbalanced stress and overturning, and has excellent stability in maintaining the inclined pole of the stacked iron core; 7、The bearing structure of the application is very simple, can adapt to the placement of stacked iron cores of different specifications through the bearing base, can be adapted by replacing different bearing bases, is very easy to operate, and has very extensive applicability; 8、The application also relates to a maintaining method, the maintaining method of the application can well maintain the stacked iron core during heating to pressing, ensure that the inclined pole of the stacked iron core will not change, maintain the inclined pole at a set angle, greatly improve the production efficiency and accuracy of the optical shaft rotor, the whole operation process is very simple, and is suitable for wide application and promotion; 9、The application maintains the stacked iron core when it is placed on the bearing structure, the operation is very simple, the stacked iron core is maintained stable during placement on the bearing structure and separation from the robot through expansion sleeve expansion and fixation, and the inclined pole is prevented from being damaged due to shaking during handling; 10、The application fixes the stacked iron core during the switching process of the stacked iron core station, the stacked iron core will not shake and the inclined pole of the stacked iron core will not be damaged during the rotation of the stacked iron core following the turntable through the pressing of the stacked iron core by the swing arm, and the stability is excellent; 11、The application well connects the fixing of the stacked iron core by the first fixing structure and the fixing by the second fixing structure during the switching process, ensures that the stacked iron core is always maintained stable during the switching process, and after the expansion sleeve leaves the turntable, the rotation of the turntable is not affected, the whole operation is simple and efficient.

[0018] The maintaining device of the application has simple structure and is convenient to use, can effectively maintain the stability of the stacked iron core from heating to pressing, ensures that the stacked inclined pole is always maintained at a set requirement, greatly improves the efficiency of the optical shaft rotor processing, has high overall automation degree, does not need too much personnel on duty, and has great popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 : The production top view of the optical shaft rotor of the application; Figure 2 : The side view of the pressing support structure of the application; Figure 3 : The axial view of the pressing support of the application; Figure 4 : The maintenance device axial view of the present application; Wherein: 1 - press bracket; 2 - rotary table; 3 - expansion sleeve seat; 4 - expansion sleeve; 5 - expansion sleeve mandrel; 6 - expansion sleeve cylinder (not shown in the figure); 7 - vertical guide rail; 8 - lifting oil cylinder; 9 - mounting seat; 10 - pressing cylinder; 11 - swing arm; 12 - rotary oil cylinder; 13 - bearing base. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are exemplary, and are intended to explain the present application, and are not to be understood as limiting the present application.

[0021] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0023] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0024] The application relates to a light-axis rotor inclined-pole maintaining device, and the maintaining device is applied to the production process of a light-axis rotor. In the production process of the light-axis rotor, a plurality of iron cores are first stacked according to a set angle, and in general, a lower end plate is first stacked, then the iron cores are stacked on the lower end plate layer by layer, each iron core is stacked according to the set angle, after all the iron cores are stacked, an upper end plate is stacked on the uppermost layer to form the required stacked iron cores. The stacked iron cores are transferred to a heating station, the iron cores are heated by a heating device of the heating station, the iron cores are expanded by heat, and meanwhile, a middle hole in the middle of the iron cores is also expanded. Then the heated iron cores are carried to a pressing station to press a light-axis rotor shaft, the light-axis rotor shaft is a normal-temperature structure and can be easily pressed into the expanded middle hole of the iron cores, finally, the pressed rotor is cooled, and the production of the light-axis rotor shaft is completed. The maintaining device is applied to the process from the heating of the stacked iron cores to the pressing of the light-axis rotor shaft, and the maintaining device is used for maintaining the inclined poles of the stacked iron cores unchanged, and actually, the angle of each iron core of the stacked iron cores is maintained as the set angle.

[0025] Specifically, as shown in the figure, Figures 1-4 The light-axis rotor inclined-pole maintaining device comprises a pressing support 1, the pressing support 1 is a bearing basis of the whole maintaining device, the pressing support 1 is provided with a station switching structure, a bearing structure, a first fixing structure and a second fixing structure, the station switching structure comprises at least one feeding station, one pressing station and one discharging station, and the station switching structure is used for driving the stacked iron cores to transfer between the feeding station, the pressing station and the discharging station. After the stacked iron cores are heated, the heated stacked iron cores are carried to the feeding station by a robot and placed, then the stacked iron cores of the feeding station are transferred to the pressing station by the station switching structure, a device on the pressing station presses the light-axis rotor shaft into the middle hole of the stacked iron cores to form a rotor, after the pressing is completed, the station switching device transfers the completed rotor to the discharging station, and the robot transfers the rotor to a cooling system for cooling operation.

[0026] The bearing structure is arranged on the switching structure and is used for bearing the heated stacked iron cores. The first fixing structure is used for fixing and limiting all the iron cores when the stacked iron cores are placed on the bearing structure. The second fixing structure is used for fixing and limiting all the iron cores when the stacked iron cores are transferred from the feeding station to the pressing station.

[0027] The functions of the first fixing structure and the second fixing structure are different, and the application time is also different. The first fixing structure is used to fix the stacked iron core when the robot carries the heated stacked iron core to the loading station. The robot places the heated stacked iron core on the bearing structure, and the first fixing structure starts to act to fix and limit the stacked iron core. Then the robot completely separates from the stacked iron core, and the first fixing structure can avoid the shaking influence of the robot on the stacked iron core. The second fixing structure starts to fix the stacked iron core after the robot completely separates from the stacked iron core. At this time, the second fixing structure and the first fixing structure both fix and limit the stacked iron core. After the second fixing structure completely fixes the stacked iron core, the first fixing structure removes the fixation of the stacked iron core, and the first fixing structure separates from the stacked iron core. After that, the stacked iron core is completely fixed and limited by the second fixing structure.

[0028] In actual application, the following method can be used: after the stacked iron core is heated, the robot carries the stacked iron core to the bearing structure; the first fixing structure fixes the stacked iron core after the stacked iron core is placed on the bearing structure; the robot separates from the stacked iron core, and the second fixing structure fixes the stacked iron core; the first fixing structure separates from the contact with the stacked iron core; the stacked iron core is detected. If the inclined pole of the stacked iron core meets the set requirements, the station switching structure switches the stacked iron core from the loading station to the press-fitting station, and the inclined pole maintenance of the optical shaft rotor stacked iron core is completed.

[0029] The detection device is arranged on the press-fitting support 1. The detection device collects the image information of the stacked iron core on the loading station, performs contour analysis based on the image information, and judges whether the contour of the stacked iron core on the loading station meets the iron core stacking angle requirement. If it does not meet the requirement, it proves that the stacked iron core has a problem, and the stacking angle does not meet the set inclined pole requirement, which needs to be excluded. If the detection device judges that the stacked iron core meets the inclined pole requirement, the subsequent press-fitting can be continued.

[0030] In some embodiments of the present application, the station switching structure is optimized, as shown in Figures 2-4 The station switching structure includes a rotating disc 2 placed on the press-fitting support 1. The rotating disc 2 is suspended on the press-fitting support 1. A rotating motor is installed on the press-fitting support 1. The rotating disc 2 is fixed on the rotating motor and driven to rotate around the vertical axis by the rotating motor. A plurality of guide rollers are arranged on the press-fitting support 1. The guide rollers are fixed on the press-fitting support 1 by support rods. The guide rollers are connected to the upper end of the support rods and can rotate around the horizontal axis. The plurality of guide rollers are uniformly distributed along the circumference with the center of the rotating disc 2 as the center. The guide rollers are located at the position close to the outer side of the circumference at the lower end surface of the rotating disc 2. On the one hand, the guide rollers support the rotating disc 2, and on the other hand, the rotating disc 2 rotates more smoothly.

[0031] The turntable 2 of this embodiment is provided with four stations, namely, a loading station (such as Figure 4 A shown), cache station (such as Figure 4 B), press-fitting station (as shown Figure 4 C) and unloading station (as shown Figure 4 D shown). The four stations are distributed at equal intervals with the center of the turntable 2 as the center. The four stations of this embodiment are relative to the press-fitting bracket 1, that is, the turntable 2 is a rotating structure. When the turntable 2 rotates to Figure 4 In the position shown, position A corresponds to the loading station.

[0032] In other embodiments of the present application, the first fixing structure is optimized. Specifically, Figures 2-4 As shown, the first fixed structure includes an expansion sleeve seat 3, an expansion sleeve 4, an expansion sleeve core shaft 5 and an expansion sleeve cylinder 6. The expansion sleeve seat 3 can be vertically raised and lowered and connected to the lower end surface of the turntable 2; the lower end of the expansion sleeve 4 is fixed to the expansion sleeve seat 3, and the upper end vertically passes through the turntable 2 and the supporting structure. The expansion sleeve 4 is a cylindrical structure that can expand or contract along the radial direction of the middle hole of the iron core due to internal compression; the upper part of the expansion sleeve core shaft 5 is sleeved on the expansion sleeve 4, and the upper end of the expansion sleeve core shaft 5 is an inverted cone structure with a thick upper part and a thin lower part; the expansion sleeve cylinder 6 is fixed on the expansion sleeve seat 3, and the output end of the expansion sleeve cylinder 6 is connected to the lower end of the expansion sleeve core shaft 5, which is used to drive the expansion sleeve core shaft 5 to move vertically.

[0033] The first fixing structure of this embodiment secures the stacked cores in position through their central holes. When the robot transports the heated stacked cores to the turntable 2, it fits over the expansion sleeve 4, which passes through the central holes of all the cores and the end plates. At this point, the expansion sleeve 4 is in a contracted state, with its outer diameter smaller than the diameter of the central holes, allowing it to easily fit into the central holes. Once the robot has completely positioned the stacked cores on the support structure, the expansion cylinder 6 drives the expansion shaft 5 downward. The larger end of the expansion shaft 5 enters the expansion sleeve 4, squeezing it. The expansion sleeve 4 begins to expand radially outward, pressing against the inner wall of the central holes between the stacked cores and the end plates. The expansion sleeve 4 is fully tensioned with the stacked cores, securing the cores completely to the expansion sleeve 4. The robot can then release its grip on the stacked cores.

[0034] Once the second fixing structure has secured the stacked cores, the first fixing structure can be removed. The expanding cylinder 6 drives the expanding shaft 5 upward, causing the larger end of the expanding shaft 5 to extend from the expanding sleeve 4. The larger end of the expanding shaft 5 no longer exerts a compressive effect on the expanding sleeve 4, and the expanding sleeve 4 begins to contract radially inward to restore itself. The contracted expanding sleeve 4 no longer contacts the stacked cores or the inner wall of the middle hole in the end plate, and the expanding sleeve 4 is completely separated from the stacked cores.

[0035] Because the expansion sleeve 4 is a columnar structure extending from the turntable 2, that is, the entire turntable 2 has only one set of first fixing structures, the expansion sleeve 4 passes through the turntable 2 to limit and fix the stacked cores. Once the second fixing structures have completed the fixation of the cores, the expansion sleeve 4 must be removed from the turntable 2. In this embodiment, after the second fixing structures have completed the fixation of the cores, the expansion sleeve 4 is moved downward, passing through the turntable 2 from top to bottom and moving to the bottom of the turntable 2, without affecting the rotation of the turntable 2.

[0036] like Figures 2-4 As shown, the press-fit bracket 1 is also equipped with a vertical guide rail 7 and a lifting cylinder 8. The vertical guide rail 7 is a guide structure located below the turntable 2 and is fixed to the press-fit bracket 1. The expansion sleeve 3 is connected to the vertical guide rail 7 for vertical movement. The lifting cylinder 8 is used to drive the expansion sleeve 3 to move up and down along the vertical guide rail 7.

[0037] In actual application, after the robot has completed transporting the heated stacked iron cores, the robot sets the iron cores on the expansion sleeve 4, so that the upper end of the expansion sleeve 4 passes through the middle hole of the stacked iron cores from bottom to top, and the stacked iron cores below are placed on the supporting structure. After the lower end plate of the lower end of the stacked iron cores is placed on the supporting structure, the expansion sleeve mandrel 5 is driven downward by the expansion sleeve cylinder 6, and the large end of the expansion sleeve mandrel 5 enters the expansion sleeve 4. The large end of the expansion sleeve mandrel 5 exerts an extrusion effect on the expansion sleeve 4, and the expansion sleeve 4 begins to expand radially outward. The expanded expansion sleeve 4 is pressed against the inner wall of the middle hole between the stacked iron cores and the end plate. The expansion sleeve 4 and the stacked iron core are fully tensioned, and the stacked iron core is completely fixed on the expansion sleeve 4. The robot removes the clamping of the stacked iron cores. After the second fixing structure completes the fixation of the stacked cores, the fixation of the expansion sleeve 4 on the cores can be removed, and the expansion sleeve core shaft 5 is driven upward by the expansion sleeve cylinder 6. The large end of the expansion sleeve core shaft 5 extends out of the expansion sleeve 4. The large end of the expansion sleeve core shaft 5 no longer exerts an extrusion effect on the expansion sleeve 4, and the expansion sleeve 4 begins to shrink radially inward to recover. The shrinking expansion sleeve 4 no longer contacts the inner wall of the middle hole between the stacked cores and the end plate, and the expansion sleeve 4 is completely separated from the stacked cores; the lifting cylinder 8 drives the expansion sleeve seat 3 to move downward along the vertical guide rail 7 until the upper end of the expansion sleeve 4 passes through the through hole on the turntable 2 and enters the bottom of the turntable 2; The rotary motor drives the turntable 2 to switch the workstations.

[0038] In further embodiments of the present application, the second fixing structure is optimized, and specifically, as shown in Figures 2-4 The second fixing structure of the present embodiment comprises at least two sets of mounting seats 9 and swing arms 11, the mounting seats 9 are connected to the rotating disc 2 vertically movably through the downward pressing cylinder 10, and the at least two sets of mounting seats 9 are spaced and arranged around the corresponding bearing structure along the circumference with the axis of the expansion sleeve mandrel 5 as the center, as shown in Figures 2-4 The present embodiment is provided with one set of mounting seats 9 on each side of the bearing structure, and the two sets of mounting seats 9 are symmetrically arranged on the two sides of the corresponding bearing structure with the axis of the expansion sleeve mandrel 5 as the center. The swing arm 11 is connected to the mounting seat 9 at one end through the rotary oil cylinder 12 and is rotatable around the vertical axis, and the other end extends in the horizontal direction.

[0039] That is, the swing arm 11 of the present embodiment can realize two actions, one is vertical up and down movement, and the other is rotation around the vertical axis. The rotation of the swing arm 11 is to vacate the space on the bearing structure to facilitate the operation of the robot to lower the stacked iron core. The vertical movement of the swing arm 11 is mainly the downward pressing action to fix the stacked iron core on the bearing structure. The end of the swing arm 11 away from the rotary oil cylinder 12 is provided with a pressing block, which is a block structure protruding from the end surface of the swing arm 11, facilitating the fixation of the stacked iron core by the swing arm 11.

[0040] In use, first, the swing arm 11 is driven by the rotary oil cylinder 12 to rotate outward by 90° (not limited to this angle, as long as it can completely stagger the space above the bearing structure, without affecting the lowering of the stacked iron core); after the first fixing structure completes the fixation of the stacked iron core, the swing arm 11 is driven by the rotary oil cylinder 12 to rotate inward by 90°, so that the pressing block of the swing arm 11 is directly above the stacked iron core; the entire mounting seat 9 is driven by the downward pressing cylinder 10 to move downward, and the swing arm 11 moves downward with the mounting seat 9 until the pressing block at the end of the swing arm 11 is pressed against the upper end surface of the stacked iron core (in fact, it should be pressed against the upper end surface of the upper end plate of the uppermost stacked iron core), and after complete pressing, the fixation of the stacked iron core by the second fixing structure is completed; To release the pressing fixation of the stacked iron core by the second fixing structure, the mounting seat 9 is driven upward by the downward pressing cylinder 10, so that the pressing block is separated from the upper end surface of the stacked iron core, and the swing arm 11 is completely separated from the stacked iron core, and then the swing arm 11 is driven outward by 90° by the rotary oil cylinder 12 to vacate the space above the stacked iron core, facilitating the subsequent robot to take away the stacked iron core on the bearing structure.

[0041] In further embodiments of the present application, the bearing structure is optimized, and specifically, as shown in Figure 4As shown, the bearing structure of the embodiment includes a bearing base 13, which is a ring structure sleeved on the expansion sleeve 4 and rests on the rotary table 2 at the lower end face and is used to bear the stacked cores at the upper end face.

[0042] The embodiment places a plurality of bearing bases 13 on the press-fit support 1, and each bearing base 13 corresponds to a type of core. The appropriate bearing base 13 can be selected for use according to the structure of the core.

[0043] In actual application, the present application can be operated according to the following steps: a robot (such as Figure 1 As shown, I) the robot carries the heated stacked core, and the robot sleeves the core on the expansion sleeve 4, so that the upper end of the expansion sleeve 4 passes through the middle hole of the stacked core from bottom to top. The lower stacked core is placed on the bearing structure. After the lower end plate at the lowermost end of the stacked core rests on the bearing structure, the expansion sleeve cylinder 6 drives the expansion sleeve shaft 5 to move downward. The large end of the expansion sleeve shaft 5 enters the expansion sleeve 4, and the large end of the expansion sleeve shaft 5 exerts a squeezing action on the expansion sleeve 4. The expansion sleeve 4 starts to expand outward in the radial direction. The expanded expansion sleeve 4 abuts against the inner wall of the middle hole of the stacked core and the end plate. The expansion sleeve 4 is completely tensioned with the stacked core, and the stacked core is completely fixed on the expansion sleeve 4. The robot removes the clamping of the stacked core; The rotary cylinder 12 drives the swing arm 11 to rotate inward by 90°, so that the pressing block of the swing arm 11 is directly above the stacked core. The entire mounting seat 9 is driven downward by the downward pressing cylinder 10, and the swing arm 11 moves downward with the mounting seat 9 until the pressing block at the end of the swing arm 11 is pressed against the upper end face of the stacked core. After complete pressing, the fixing operation of the stacked core is completed. The expansion sleeve 4 is removed from the fixing of the core. The expansion sleeve cylinder 6 drives the expansion sleeve shaft 5 to move upward. The large end of the expansion sleeve shaft 5 extends out of the expansion sleeve 4. The large end of the expansion sleeve shaft 5 no longer exerts a squeezing action on the expansion sleeve 4. The expansion sleeve 4 starts to shrink inward in the radial direction and returns to its original state. The shrunk expansion sleeve 4 no longer contacts the inner wall of the middle hole of the stacked core and the end plate. The expansion sleeve 4 is completely separated from the stacked core. The expansion sleeve seat 3 is driven downward along the vertical guide rail 7 by the lifting cylinder 8 until the upper end of the expansion sleeve 4 passes through the through hole on the rotary table 2 and enters the lower side of the rotary table 2. The rotary motor drives the rotary table 2 to rotate. The rotary table 2 drives the stacked core to switch to the buffer station, and then to the press-fit station. After the press-fit operation is completed in the press-fit station, the rotary table 2 is switched to the unloading station. In the unloading station, the downward pressing cylinder 10 drives the mounting seat 9 to move upward, so that the pressing block is separated from the upper end face of the stacked core. The swing arm 11 is completely separated from the stacked core. Then, the swing arm 11 is driven outward by 90° by the rotary cylinder 12, so that the space above the stacked core is emptied. The robot (such as Figure 1 As shown, II) the stacked core on the unloading station is taken away, and the entire operation is completed.

[0044] The foregoing presents and describes the basic principles of the application, the main features, and the advantages of the application. It should be understood by those skilled in the art that the application is not limited to the above-described embodiments, and the above-described embodiments and descriptions in the specification are only to illustrate the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A device for maintaining an optical axis rotor skew pole, comprising a press-fit bracket (1), characterized in that: The press-fit bracket (1) is provided with: A station switching structure, comprising at least one loading station, one pressing station, and one unloading station, the station switching structure being used to drive the stacked cores to transfer among the loading station, the pressing station, and the unloading station; A bearing structure, the bearing structure being arranged on the switching structure and being used to receive the heated stacked iron cores; a first fixing structure, the first fixing structure being used to fix and restrain all the stacked cores when they are placed on the supporting structure; The second fixing structure is used to fix and restrict all the stacked cores when the cores are transferred from the loading station to the pressing station.

2. The optical axis rotor skew pole maintaining device according to claim 1, characterized in that: The station switching structure includes: The turntable (2) is a plate-shaped structure that is driven by a rotary motor on a press-fitting bracket (1) and can rotate around a vertical axis. The turntable (2) is provided with at least one loading station, one press-fitting station, and one unloading station.

3. The optical axis rotor skew pole maintaining device according to claim 2, characterized in that: The first fixing structure includes: An expansion sleeve seat (3), the expansion sleeve seat (3) being connected to the lower end surface of the turntable (2) in a vertically liftable manner; An expansion sleeve (4), wherein the lower end of the expansion sleeve (4) is fixed to the expansion sleeve seat (3), and the upper end vertically passes through the turntable (2) and the bearing structure. The expansion sleeve (4) is a cylindrical structure that can expand or contract along the radial direction of the middle hole of the iron core due to internal compression; An expansion sleeve core shaft (5), wherein the upper portion of the expansion sleeve core shaft (5) is sleeved on the expansion sleeve (4), and the upper end of the expansion sleeve core shaft (5) is an inverted conical structure with a thick upper portion and a thin lower portion; The expansion cylinder (6) is fixed on the expansion seat (3), and the output end of the expansion cylinder (6) is connected to the lower end of the expansion core shaft (5) for driving the expansion core shaft (5) to move vertically.

4. The optical axis rotor skew pole maintaining device according to claim 3, characterized in that: The press-fit bracket (1) is also provided with: A vertical guide rail (7), wherein the vertical guide rail (7) is a guide structure located below the turntable (2), and the expansion sleeve seat (3) is vertically movably connected to the vertical guide rail (7); A lifting cylinder (8) is used to drive the expansion sleeve seat (3) to move up and down along the vertical guide rail (7).

5. The optical axis rotor skew pole maintaining device according to claim 3, characterized in that: The second fixing structure includes: At least two groups of mounting seats (9), the mounting seats (9) being connected to the turntable (2) in a vertically movable manner via a downward pressure cylinder (10), and the at least two groups of mounting seats (9) being circumferentially spaced around the corresponding bearing structure with the axis of the expansion sleeve core shaft (5) as the center; A swing arm (11) has one end connected to the mounting seat (9) and rotatable about a vertical axis by being driven by a rotary oil cylinder (12), and the other end extending in a horizontal direction.

6. The optical axis rotor skew pole maintaining device according to claim 5, characterized in that: The second fixing structure comprises two groups of mounting seats (9), and the two groups of mounting seats (9) are symmetrically arranged on both sides of the corresponding bearing structure with the axis of the expansion sleeve core shaft (5) as the center.

7. The optical axis rotor skew pole maintaining device according to claim 3, characterized in that: The bearing structure comprises a bearing base (13); the bearing base (13) is an annular structure which is sleeved on the expansion sleeve (4), the lower end surface of which is placed on the turntable (2), and the upper end surface of which is used to bear the stacked iron cores.

8. A method for maintaining skewed poles of an optical axis rotor, characterized in that: The maintenance method is operated according to the optical axis rotor skew pole maintenance device according to any one of claims 1 to 7, comprising: After the stacked cores are heated, the robot moves the stacked cores to the supporting structure; The first fixing structure fixes the stacked cores after the stacked cores are placed on the supporting structure; The robot detaches from the stacked cores, and the second fixing structure fixes the stacked cores; The first fixing structure is out of contact with the stacked core; The stacked cores are inspected. If the pole tilt of the stacked cores meets the set requirements, the station switching structure switches the stacked cores from the loading station to the pressing station to complete the pole tilt maintenance of the stacked cores of the optical axis rotor.

9. The optical axis rotor skew maintaining method according to claim 8, characterized in that: The method for fixing the stacked iron cores after the stacked iron cores are placed on the supporting structure by the first fixing structure includes: a robot carries the heated stacked iron cores and sets them on the expansion sleeve (4) of the first fixing structure, drives the expansion sleeve core shaft inside the expansion sleeve to move downward, causes the large end of the expansion sleeve core shaft to move inside the expansion sleeve core shaft, and forces the expansion sleeve to expand to tighten and fix the outer iron cores.

10. The optical axis rotor skew pole maintaining method according to claim 8, characterized in that: The method for fixing the stacked iron cores by the second fixing structure comprises: before the stacked iron cores enter the bearing structure, driving the swing arm (11) of the second fixing structure to rotate so as to clear the space above the bearing structure; after the stacked iron cores enter the bearing structure, driving the swing arm (11) to rotate to above the stacked iron cores on the bearing structure; and driving the swing arm (11) downward so that the end of the swing arm (11) is pressed against the stacked iron cores.

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