Automatic assembling equipment for motor stator

Abstract

The invention relates to the technical field of motor stator production and assembly, and discloses a motor stator automatic assembly device which comprises a rotating table mechanism, the rotating table mechanism comprises a rotating plate and a fixed plate, the fixed plate is fixed to a rack, and the rotating plate and the fixed plate are rotationally connected at the midpoint position; one end of the rotary table mechanism is provided with a receiving area, and the other end is provided with a press-fitting area; the guide cylinder assemblies are arranged at the two ends of the rotating plate; and the overlying mechanism is fixedly arranged over the press-fitting area, and the overlying mechanism comprises a downward pressing assembly and a side pressing assembly. Through the design of the guide cylinder assembly, the guide cylinder can blow air flow which is jetted downwards, under the condition that the fit clearance between the guide cylinder assembly and a silicon steel sheet is very small, it is guaranteed that falling silicon steel sheet stators are stacked neatly and tightly at the lower end of the guide cylinder, and it is also guaranteed that the silicon steel sheets are stacked neatly and tightly without machining buckling points on the silicon steel sheets; and no magnetic loss is caused.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor stator production and assembly, and particularly relates to a motor stator automatic assembly equipment. BACKGROUND

[0002] The motor stator is one of important components in a motor, and generally comprises a stator core and a stator winding wound on the stator core. The stator core is formed by fixing a plurality of stator silicon steel sheets. In the production of small and medium-sized motor stators, the stator silicon steel sheets are generally punched as a whole, then laminated, and finally fixed after lamination to complete the stacking assembly of the motor stator.

[0003] At present, the stacking assembly of the motor stator mainly includes manual and automatic lamination. The manual lamination does not need to design a buckle point on the stator silicon steel sheet, and is completed by manually counting and stacking the stator silicon steel sheets and then fixing. The stacking assembly has low efficiency as a whole, and the counted stator silicon steel sheets are prone to missing.

[0004] The automatic lamination is completed by a machine. A common technology is in-mold lamination. The in-mold lamination is not to laminate the stator silicon steel sheets outside the mold and then put them into the mold, but to directly perform the lamination action in the progressive die of the high-speed punch press. One piece of stator silicon steel sheet is automatically pressed into the mold cavity and kept at a correct angle and height every time the mold is punched. After the number of pieces reaches the required number, the whole stator core is taken out from the mold at one time. The in-mold lamination is also called Die-in Stacking, in-mold self-buckling lamination, and Auto-Stacking Die in the industry.

[0005] This lamination method needs to process a buckle point on each stator silicon steel sheet to complete the fixation between the pieces. However, the buckle point will cause a magnetic circuit loss, which has a certain influence on the performance of the produced motor. In addition, the connection strength of the buckle point itself is low, and a secondary fixation operation is required subsequently. There is also a method of in-mold lamination by thermal bonding. However, the stator silicon steel sheet used in the thermal bonding has high machining precision, which leads to higher cost of the stator silicon steel sheet. Moreover, no matter which in-mold lamination method is used, the cost of the mold will be greatly increased. SUMMARY

[0006] The present application aims to provide a motor stator automatic assembly equipment to solve the problems of magnetic circuit loss and increased production cost caused by the existing automatic lamination method.

[0007] The present application is implemented by the following technical scheme: The cam is fixedly mounted on the frame, wherein the cam is connected to the fixed plate and the rotating plate is connected to the fixed plate at a midpoint position. The cam is provided with a receiving area at one end and a pressing area at the other end; a guide cylinder assembly is provided at both ends of the rotating plate, the guide cylinder assembly comprises a cylinder body, an annular cone wall fixedly arranged on the cylinder body, a secondary guide bar fixed on the annular cone wall, and a main guide bar fixed on the cylinder body and the annular cone wall. The lower end of the secondary guide bar is provided with an air jet, the air jet is communicated with the cavity in the cylinder body, and the cavity can be communicated with external high-pressure gas; a stacking mechanism is fixedly arranged just above the pressing area, the stacking mechanism comprises a downward pressing assembly and a side pressing assembly, the downward pressing assembly is used to press the silicon steel sheet and the pressure strip from upper and lower sides, the side pressing assembly comprises a second hydraulic rod, a movable plate and a side pressure wheel assembly, the side pressure wheel assembly is used to press the pressure strip tightly against the bottom of the slot formed by the stacking of silicon steel sheets.

[0008] In a possible design, the rack includes a top plate, connecting rods and a bottom plate. The top plate and the bottom plate are connected and fixed by a plurality of connecting rods, and the rack is fixed on the electric control box.

[0009] In a possible design, a rotating platform is rotatably provided on the rotating plate, a sealing ring is fixed below the rotating platform, the top end of the rotating platform is fixedly connected to a mounting flange, and the mounting flange is fixedly connected to the guide cylinder assembly.

[0010] In a possible design, in the material receiving area, an air blowing connector is fixed on the fixed plate, and the air blowing connector is externally connected to an air pipe.

[0011] In a possible design, in the press-fitting area, a second rotating motor is fixed under the fixed plate, the body of the second rotating motor is fixed on the fixed plate, the motor shaft of the second rotating motor is a spline shaft, and a spline sleeve is slidably provided on the spline shaft, and a through hole coaxial with the motor shaft of the second rotating motor is opened on the fixed plate, a coil tube is fixed in the through hole, and the coil tube can control the sliding of the spline sleeve on the second rotating motor, and a spline hole is opened on the rotating table.

[0012] In a possible design, the pressing assembly includes a first hydraulic rod and a press-fit flange, the cylinder body of the first hydraulic rod is fixed on the top plate, and the press-fit flange is fixed on the telescopic rod of the first hydraulic rod.

[0013] In a possible design, the movable plate is slidably arranged on the connecting rod, a through hole is opened at the center position of the movable plate, and a plurality of side pressure wheel assemblies are evenly distributed around the through hole on the movable plate. The cylinder body of the second hydraulic rod is fixed to the top plate, and the movable plate is fixed to the telescopic rod of the second hydraulic rod. Each of the side pressure wheel assemblies is fixedly connected to the movable plate, and a rolling wheel is provided on the side pressure wheel assembly to roll toward one side of the center of the through hole on the movable plate. A strip hole is opened on the side pressure wheel assembly, and two locking screws pass through the strip hole. The side pressure wheel assembly is fixed to the movable plate by the two locking screws.

[0014] In a possible design, it also includes a pressure strip pressing assembly, which includes a pressing cylinder, an L-shaped clamping rod, a fixed adjustment block and a clamping block. The cylinder body of the pressing cylinder is fixed on the frame, and the L-shaped clamping rod is fixed on the telescopic rod of the pressing cylinder. A clamping block is fixed at the lower end of the L-shaped clamping rod, and an avoidance groove is provided on the rotating plate. A fixed adjustment block is fixed at the upper end of the L-shaped clamping rod. The clamping block is slidably matched with the L-shaped clamping rod, and a spring is provided between the fixed adjustment block and the clamping block.

[0015] In one possible design, the pressure strip pressing assembly also includes a pressure strip placement groove and a stop block, wherein a plurality of cut pressure strips are arranged in the pressure strip placement groove, and a material extraction gap is provided between the pressure strip placement groove and the stop block, and the L-shaped clamping rod slides at the material extraction gap.

[0016] In one possible design, the pressure strip pressing assembly also includes a pressure strip placement groove and a stop block, wherein a plurality of cut pressure strips are arranged in the pressure strip placement groove, and a material extraction gap is provided between the pressure strip placement groove and the stop block, and the L-shaped clamping rod slides at the material extraction gap.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention adopts the design of the guide cylinder assembly, which can blow out a downward jet of air. When the matching gap between the guide cylinder assembly and the silicon steel sheet is very small, the falling silicon steel sheet stator is ensured to be neatly and tightly stacked at the lower end of the guide cylinder, thereby ensuring the lamination accuracy of the stator. Then, the neatly stacked silicon steel sheet laminations are transferred to the press-fitting area by the rotation of the rotary table mechanism. In the press-fitting area, the stator laminations are loaded into the pressure strips and press-fitted by the lamination mechanism. There is no need to process buckle points on the silicon steel sheets, and the neat and tight stacking of the silicon steel sheets is ensured without causing magnetic loss. Moreover, the present invention can be used with a simple punching and shearing die, and has no special requirements for the silicon steel sheets used. It can further save the production and assembly costs of the stator, and the quality of the assembly can be better guaranteed. No secondary fixation is required, and the assembly efficiency is also higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Schematic diagram of the structure of the guide cylinder assembly, the rotating table mechanism and the lamination assembly in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the guide cylinder assembly, the rotating table mechanism and the stacking assembly in an upward-looking state in an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the guide cylinder assembly in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the guide cylinder assembly in an upward-looking state according to an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 It is a front view of the guide cylinder assembly, the rotating table mechanism and the lamination assembly in an embodiment of the present invention; Figure 8 for Figure 7 Cross-sectional view at the middle BB; Figure 9 for Figure 8 Enlarged view of point C in the middle; Figure 10 for Figure 8 Enlarged view of point D in the middle; Figure 11 Schematic diagram of the structure of the guide cylinder assembly, the rotating platform mechanism and the pressure strip pressing assembly in an embodiment of the present invention; Figure 12 Schematic diagram of the structure of the layering press assembly in an embodiment of the present invention; Figure 13 It is a schematic diagram of the cooperation between the stator core and the guide cylinder assembly of the present invention.

[0019] The reference numerals represent: 1-frame, 101-top plate, 102-connecting rod, 103-bottom plate, 2-rotating table mechanism, 201-rotating plate, 2011-avoidance groove, 202-fixed plate, 203-blowing connector, 3-guide cylinder assembly, 301-cylinder body, 302-main guide bar, 303-auxiliary guide bar, 3031-injection port, 304-annular cone wall, 4-press-fit flange, 5-movable plate, 6-press-fit assembly of pressure strip, 601-press-fit cylinder, 602-L-shaped clamp Rod, 603-fixed adjustment block, 604-clamping block, 605-pressure strip placement groove, 606-block, 7-first hydraulic rod, 8-second hydraulic rod, 9-electric control box, 10-side pressure wheel assembly, 1001-bar hole, 11-locking screw, 12-first rotating motor, 13-second rotating motor, 14-rotating table, 15-mounting flange, 16-sealing ring, 17-spline sleeve, 18-limiting sleeve, 19-air duct, 20-pressure strip, 21-end pressure plate, 22-coil tube. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0021] Example 1, as Figures 1 to 10 As shown, an automatic assembly device for a motor stator includes a guide cylinder assembly 3, a rotating table mechanism 2, and a laminating mechanism. The rotating table mechanism 2 includes a rotating plate 201 and a fixed plate 202. The fixed plate 202 is fixed to a frame 1. The rotating plate 201 and the fixed plate 202 are rotatably connected at a midpoint. The rotating table mechanism 2 is provided with a material receiving area at one end and a press-fitting area at the other end. Two guide cylinder assemblies 3 are provided at both ends of the rotating plate 201. When the rotating plate 201 is parallel to the fixed plate 202, the two guide cylinder assemblies 3 are respectively located directly above the material receiving area and the pressing area. The guide cylinder assembly 3 directly above the material receiving area is used to receive the silicon steel sheets that have been punched and fallen so that they can be neatly stacked. The stacking mechanism is fixed directly above the pressing area. The stacking mechanism above the pressing area is used to press and fix the silicon steel sheets that are neatly stacked and embedded in the pressure strips 20. The pressure strips 20 can be fixed by manually placing them in the slots or by a robot, and there are no excessive restrictions here.

[0022] The guide cylinder assembly 3 includes a cylinder body 301, a main guide bar 302, an auxiliary guide bar 303 and an annular cone wall 304. A cavity is provided inside the cylinder body 301, and the cavity can be communicated with external high-pressure gas. An annular cone wall 304 is fixed on the top of the cylinder body 301, and the auxiliary guide bar 303 is fixed to the area where the annular cone wall 304 is located. The main guide bar 302 passes through the cylinder body 301 and the area where the annular cone wall 304 is located. The main guide bar 302 is located at a notch of the silicon steel sheet, and its two sides are in contact with the notch, thereby preventing the silicon steel sheet from rotating and dislocating in the horizontal direction, ensuring that each silicon steel sheet is aligned and will not cause rotational dislocation. An air jet 3031 is provided at the lower end of the auxiliary guide strip 303, and the air jet 3031 is connected to the cavity in the cylinder 301. During operation, the material receiving area is located directly below the stamping die, and the silicon steel sheet punched out by the stamping die first falls into the annular cone wall 304 area. In the annular cone wall 304 area, the gap between the silicon steel sheet and the guide cylinder assembly 3 is large, and the silicon steel sheet can fall smoothly. Before the silicon steel sheet enters the cylinder 301, the silicon steel sheet falls below the air jet 3031, and the gas blown out from the air jet 3031 can push the silicon steel sheet to continue falling, so that the fitting gap between the guide cylinder assembly 3 and the silicon steel sheet is very small, thereby ensuring the accuracy of the silicon steel sheet after stacking.

[0023] It should be noted that during the stamping process, the guide cylinder assembly 3 as a whole has a guiding function. When the silicon steel sheets are dropped onto the guide cylinder assembly 3 for stacking after being stamped, the larger the gap between the guide cylinder assembly 3 and the silicon steel sheets, the smoother the silicon steel sheets can fall into the bottom of the guide cylinder assembly 3 to complete the stacking. However, an excessively large gap will seriously affect the fitting tolerance of the silicon steel sheets, such as the coaxiality and alignment between the silicon steel sheets. A small gap between the guide cylinder assembly 3 and the silicon steel sheets can well ensure the alignment between the multiple silicon steel sheets after stacking, but it is difficult to make the silicon steel sheets fall smoothly to the bottom of the guide cylinder assembly 3 to complete the stacking of the silicon steel sheets. External force is required to push the silicon steel sheets into the bottom. For example, a reciprocating cylinder is used to press the silicon steel sheets into the bottom to complete the stacking. However, this type of contact-type pushing structure is difficult to debug, and its moving path is prone to interfere with the falling path of the silicon steel sheets, and it is easy to damage the silicon steel sheets after contact. After the structure of the air jet 3031 is adopted in this embodiment, when the gap between the guide cylinder assembly 3 and the silicon steel sheets is very small, the silicon steel sheets are pressed to the bottom of the guide cylinder assembly 3 by wind pressure to complete the stacking, providing force for the silicon steel sheets to fall and stack, and will not cause any obstruction to the falling of the silicon steel sheets. At the same time, it ensures the coaxiality and alignment accuracy of multiple silicon steel sheets after stacking.

[0024] In this embodiment, the rack 1 includes a top plate 101, a connecting rod 102 and a bottom plate 103. The top plate 101 and the bottom plate 103 are connected and fixed by multiple connecting rods 102. The rack 1 is fixed on the electrical control box 9. The electrical control box 9 is provided with various electrical control components for controlling the normal operation of the device.

[0025] In this embodiment, a rotating table 14 is rotatably provided on the rotating plate 201, and a sealing ring 16 is fixed under the rotating table 14. The top of the rotating table 14 is fixedly connected to the mounting flange 15, and the mounting flange 15 is fixedly connected to the guide cylinder assembly 3, so that the guide cylinder assembly 3 can be fixed on the rotating plate 201 by cooperating with the mounting flange 15 and the rotating table 14. The mounting flange 15 and the rotating table 14 are fixed in a detachable manner, which is convenient for installing different guide cylinder assemblies 3 when processing stators of different sizes, thereby completing the stacking of stators of different models.

[0026] Furthermore, in the material receiving area, a blowing connector 203 is fixed on the fixed plate 202, and the blowing connector 203 is connected to an external air pipe. The gas filled in the external air pipe enters the guide cylinder assembly 3 from the air channel 19, and then is ejected from the air jet 3031. In the press-fitting area, a second rotating motor 13 is fixed below the fixed plate 202, and the body of the second rotating motor 13 is fixed on the fixed plate 202. The motor shaft of the second rotating motor 13 is a spline shaft, and a spline sleeve 17 is slidably provided on the spline shaft. A through hole coaxial with the motor shaft of the second rotating motor 13 is opened on the fixed plate 202, and a coil tube 22 is fixed in the through hole. The spline sleeve 17 is fixed with a permanent magnet or is made of permanent magnetic material. By energizing the coil tube 22 to generate a magnetic field, the spline sleeve 17 slides. Changing the energizing direction of the coil tube 22 can also change its own magnetic field direction, so that the coil tube 22 can control the spline sleeve 17 to slide on the motor shaft of the second rotating motor 13. A spline hole is provided on the rotating table 14. After the external spline on the spline sleeve 17 enters the spline hole, the second rotating motor 13 can control the rotation of the rotating table 14, thereby controlling the rotation of the guide cylinder assembly 3, and finally driving the silicon steel sheets stacked on the guide cylinder assembly 3 to rotate.

[0027] Advantageously, a limiting sleeve 18 is fixed to the end of the rotating table 14 away from the second rotating motor 13. The limiting sleeve 18 can prevent the spline sleeve 17 from popping out excessively. The spline sleeve 17 can also be completely retracted under the rotating plate 201, thereby not interfering with the rotation of the rotating plate 201.

[0028] In this embodiment, the stacking mechanism includes a downward pressing component and a side pressing component. The downward pressing component is used to press the pressure strip 20 against the silicon steel sheets at both ends of the stacked silicon steel sheets, and the side pressing component is used to press the pressure strip from the annular side of the stacked silicon steel sheets to prevent the pressure strip from bending so that it can be better embedded in the slot formed by the silicon steel stack.

[0029] The pressing assembly includes a first hydraulic rod 7 and a press-fitting flange 4. The cylinder of the first hydraulic rod 7 is fixed on the top plate 101, and the press-fitting flange 4 is fixed on the telescopic rod of the first hydraulic rod 7. By extending the first hydraulic rod 7, the silicon steel sheet below the press-fitting flange 4 can be pressed tightly. For stators of different diameters, as long as the pressure strip 20 falls into the annular area at the lower end of the press-fitting flange 4, the pressing operation on the stator can be completed.

[0030] Furthermore, the side pressure assembly includes a second hydraulic rod 8, a movable plate 5 and a side pressure wheel assembly 10. A through hole is opened at the center of the movable plate 5, and the through hole can facilitate the press-fit flange 4 to press the stacked silicon steel sheets. The movable plate 5 is slidably arranged on the connecting rod 102, the cylinder of the second hydraulic rod 8 is fixed on the top plate 101, and the movable plate 5 is fixed on the telescopic rod of the second hydraulic rod 8. A plurality of side pressure wheel assemblies 10 are evenly distributed around the through hole on the movable plate 5, each of the side pressure wheel assemblies 10 is fixedly connected to the movable plate 5, and a rolling wheel is provided on the side of the side pressure wheel assembly 10 that rolls toward the center of the through hole on the movable plate 5. When the second rotating motor 13 rotates the pressure strip 20 on the stator core to align with the side pressure wheel assembly 10, the movable plate 5 drives the side pressure wheel assembly 10 to descend, thereby further pressing the pressure strip 20 from the side through the rolling wheel to complete the assembly of the stator core.

[0031] Advantageously, a strip hole 1001 is provided on the side pressure wheel assembly 10, and two locking screws 11 pass through the strip hole 1001. The side pressure wheel assembly 10 is fixed to the movable plate 5 by the two locking screws 11. By adjusting the position of the locking screws 11 in the strip hole 1001, the length of the side pressure wheel assembly 10 extending into one side of the through hole on the movable plate 5 can be adjusted, thereby completing the side pressure of stators with different diameters.

[0032] It's important to note that buckling points are areas of localized mechanical deformation, where the crystal lattice is severely distorted, the resistance to magnetic domain rotation increases, and localized iron losses rise. The metal-to-metal contact between the convex and concave regions is equivalent to short-circuiting the two silicon steel sheets, which should be insulated. Under an alternating magnetic field, eddy current loops form here, generating additional eddy current losses. The pressure strip 20 itself is made of a non-magnetic material (such as austenitic stainless steel, aluminum alloy, or non-magnetic steel). It has virtually no "short-circuiting" or "shunting" effect on the magnetic flux in the main magnetic circuit, thus avoiding any additional eddy current losses.

[0033] Example 2: This example is based on Example 1, with reference to Figures 11 to 13 , further provides a bead pressing assembly 6, through which the bead 20 is automatically pushed into the press-fitting groove of the silicon steel sheet after stacking is completed, thereby realizing the fully automatic production of the stator core. The bead pressing assembly 6 includes a pressing cylinder 601, an L-shaped clamping rod 602, a fixed adjustment block 603 and a clamping block 604, the cylinder body of the pressing cylinder 601 is fixed on the frame 1, the L-shaped clamping rod 602 is fixed on the telescopic rod of the pressing cylinder 601, the lower end of the L-shaped clamping rod 602 is fixed with a clamping block, the rotating plate 201 is provided with an avoidance groove 2011, the avoidance groove 2011 is used to allow the clamping block to have sufficient space for movement, the upper end of the L-shaped clamping rod 602 is fixed with a fixed adjustment block 603, the clamping block 604 is slidably matched with the L-shaped clamping rod 602, and a spring is provided between the fixed adjustment block 603 and the clamping block 604.

[0034] The clamping block 604 is fixed to the pressure strip 20 between the clamping block and the clamping block by the elastic force of the spring. Figure 13 , each silicon steel sheet is provided with four rectangular notches for fixing the pressure strips. At each rectangular notch, multiple silicon steel sheets are stacked to form a slot for installing the pressure strip 20, thereby forming multiple slots on the stacked stator silicon steel sheets. Figure 12 , the pressure strip 20 is fixed between the card block 604 and the card block. After one of the card slots is aligned with the L-shaped card rod 602, the pressure strip 20 is pushed into the card slot of the silicon steel sheet by the extension of the press cylinder 601, completing the automatic loading of the pressure strip 20. The second rotating motor 13 controls the rotation of the spline sleeve 17. The spline sleeve 17 extends into the rotating table 14 and drives the rotating table 14 to rotate. The rotating table 14 then drives the guide cylinder assembly 3 fixed thereto to rotate, and the main guide bar 302 on the guide cylinder assembly 3 is positioned. In the slot of the silicon steel sheet, the second rotating motor 13 can control the rotation of the stacked silicon steel sheets, so that different slots are aligned with the L-shaped clamping rod 602 in turn. After the blocking slot is aligned with the L-shaped clamping rod 602, the L-shaped clamping rod 602 is pushed toward the slot by extending the pressing cylinder 601, and the pressure strip 20 fixed on the L-shaped clamping rod 602 is pushed in. The slot in front of the L-shaped clamping rod 602 is rotated and switched, and the extension and contraction of the pressing cylinder 601 are cooperated to finally complete the installation of multiple pressure strips 20 on the stator.

[0035] Further, refer to Figure 12 The bead pressing assembly 6 also includes a bead placement groove 605 and a stop block 606. A plurality of cut beadings 20 are arranged in the bead placement groove 605. A material extraction gap is provided between the bead placement groove 605 and the stop block 606. The L-shaped clamping rod 602 slides at the material extraction gap to push out the beading 20 placed in the material extraction gap and press it into the clamping groove of the silicon steel sheet.

[0036] Advantageously, the fixed adjustment block 603 is adjustable at the fixed position of the L-shaped clamping rod 602 , thereby enabling clamping of pressure strips 20 of various lengths.

[0037] Finally, it should be noted that in this embodiment and the previous embodiment, the down-pressing assembly, the side-pressing assembly and the pressure strip pressing assembly 6 can all complete the assembly of stator cores of various specifications. When assembling stator cores of different specifications, it is only necessary to process different guide cylinder assemblies 3. The processing cost of the guide cylinder assembly 3 is also relatively low, and it has strong versatility as a whole. The mold required for stamping only requires a simple punching and shearing mold, which can reduce the production and assembly cost of the entire stator while ensuring processing efficiency and processing accuracy.

[0038] Working principle: Install the guide cylinder assembly 3 required for this assembly on the rotating plate 201, adjust the position of the guide cylinder assembly 3 below the material receiving area so that the guide cylinder assembly 3 is aligned with the center hole position of the silicon steel sheet, and start stamping. If it is necessary to place end pressure plates 21 at both ends of the stator, install an end pressure plate 21 on the guide cylinder assembly 3 before stamping. The number of silicon steel sheets falling during stamping is sensed by the grating sensor and counted. When stamping starts, the air pump connected to the guide cylinder assembly 3 is also turned on. The falling silicon steel sheets fall under the air jet 3031 and are directly blown down onto the rotating plate 201. The silicon steel sheets on the rotating plate 201 are neatly stacked through the guidance of the main guide bar 302.

[0039] When the number of silicon steel sheets in the material receiving area is reached, the first rotating motor 12 is immediately started to control the rotation of the rotating plate 201, and the guide cylinder assembly 3 in the press-fitting area is rotated to the material receiving area to carry out the material receiving of the next stator. The guide cylinder assembly 3 in the material receiving area drives the silicon steel sheets to rotate to the press-fitting area. Through the cooperation of the pressure strip pressing assembly 6 and the second rotating motor 13, the stacked silicon steel sheets are pressed into the pressure strip 20 in sequence. Subsequently, the first hydraulic rod 7 and the second hydraulic rod 8 are controlled to extend, and the pressure flange 4 is pressed down to compact the silicon steel sheets first. After the pressure flange 4 is compacted, the second hydraulic rod 8 continues to extend, and then the side pressure processing of the pressure strip 20 is completed, so that the pressure strip 20 tightly compacts the multiple silicon steel sheets. The fully automatic assembly of the stator core is completed. The stator core after compaction and assembly can be removed from the guide cylinder assembly 3 by an automatic clamp or manually.

[0040] For assembly operations that require the installation of an end pressure plate 21, it is only necessary to place an end pressure plate 21 on the guide cylinder assembly 3 before entering the material splicing area, and then place another end pressure plate 21 on the guide cylinder assembly 3 after entering the lamination area after the material splicing is completed.

[0041] Overall, through the design of the guide cylinder assembly 3 and the cooperation of the lamination assembly, no buckle point needs to be processed on the silicon steel sheet, no magnetic loss is caused, and only a simple punching and shearing die is used, which can save the production and assembly cost of the stator, ensure the assembly quality, and improve the assembly efficiency.

[0042] The above specific embodiments further explain the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automatic assembly device for a motor stator, characterized in that: include: A rotating table mechanism (2), the rotating table mechanism (2) comprising a rotating plate (201) and a fixed plate (202), the fixed plate (202) being fixed on the frame (1), the rotating plate (201) being rotatably connected to the fixed plate (202) at a midpoint position, and the rotating table mechanism (2) having a material receiving area at one end and a pressing area at the other end; A guide cylinder assembly (3) is provided at both ends of the rotating plate (201), the guide cylinder assembly (3) comprising a cylinder (301), an annular cone wall (304) fixed to the cylinder (301), an auxiliary guide bar (303) fixed to the annular cone wall (304), and a main guide bar (302) fixed to the area where the cylinder (301) and the annular cone wall (304) are located, the auxiliary guide bar (303) having an air jet (3031) at its lower end, the air jet (3031) being in communication with a cavity in the cylinder (301), and the cavity being capable of communicating with external high-pressure gas; A stacking mechanism is fixedly arranged just above the pressing area, and the stacking mechanism includes a lower pressing assembly and a side pressing assembly. The lower pressing assembly is used to press the silicon steel sheet and the pressure strip (20) from the upper and lower sides. The side pressing assembly includes a second hydraulic rod (8), a movable plate (5) and a side pressure wheel assembly (10). The side pressure wheel assembly (10) is used to press the pressure strip (20) tightly against the bottom of the slot formed by the stacking of the silicon steel sheets.

2. The motor stator automatic assembly equipment according to claim 1, characterized in that: The frame (1) comprises a top plate (101), connecting rods (102) and a bottom plate (103); the top plate (101) and the bottom plate (103) are connected and fixed via a plurality of connecting rods (102); and the frame (1) is fixed on an electric control box (9).

3. The motor stator automatic assembly equipment according to claim 1, characterized in that: A rotating platform (14) is rotatably provided on the rotating plate (201), a sealing ring (16) is fixed below the rotating platform (14), a top end of the rotating platform (14) is fixedly connected to a mounting flange (15), and the mounting flange (15) is fixedly connected to the guide cylinder assembly (3).

4. The automatic motor stator assembly equipment according to claim 1 or 3, characterized in that: In the material receiving area, an air blowing connector (203) is fixed on the fixed plate (202), and the air blowing connector (203) is externally connected to an air pipe.

5. The motor stator automatic assembly equipment according to claim 3, characterized in that: In the press-fitting area, a second rotating motor (13) is fixedly provided below the fixed plate (202), a body of the second rotating motor (13) is fixed on the fixed plate (202), a motor shaft of the second rotating motor (13) is a spline shaft, a spline sleeve (17) is slidably provided on the spline shaft, a through hole coaxial with the motor shaft of the second rotating motor (13) is provided on the fixed plate (202), a coil tube (22) is fixed in the through hole, the coil tube (22) can control the sliding of the spline sleeve (17) on the second rotating motor (13), and a spline hole is provided on the rotating table (14).

6. The motor stator automatic assembly equipment according to claim 2, characterized in that: The pressing assembly comprises a first hydraulic rod (7) and a press-fit flange (4), wherein the cylinder of the first hydraulic rod (7) is fixed on the top plate (101), and the press-fit flange (4) is fixed on the telescopic rod of the first hydraulic rod (7).

7. The motor stator automatic assembly equipment according to claim 2, characterized in that: The movable plate (5) is slidably arranged on the connecting rod (102), a through hole is provided at the center of the movable plate (5), and a plurality of side pressure wheel assemblies (10) are evenly distributed around the through hole on the movable plate (5), the cylinder body of the second hydraulic rod (8) is fixed on the top plate (101), and the movable plate (5) is fixed on the telescopic rod of the second hydraulic rod (8), each of the side pressure wheel assemblies (10) is fixedly connected to the movable plate (5), and a rolling wheel is provided on the side pressure wheel assembly (10) that rolls toward the side of the center of the through hole on the movable plate (5), and a strip hole (1001) is provided on the side pressure wheel assembly (10), and two locking screws (11) are passed through the strip hole (1001), and the side pressure wheel assembly (10) is fixed to the movable plate (5) by the two locking screws (11).

8. The motor stator automatic assembly equipment according to claim 1, characterized in that: The invention also includes a pressure strip pressing assembly (6), the pressure strip pressing assembly (6) including a pressing cylinder (601), an L-shaped clamping rod (602), a fixed adjustment block (603) and a clamping block (604), the cylinder body of the pressing cylinder (601) is fixed on the frame (1), the L-shaped clamping rod (602) is fixed on the telescopic rod of the pressing cylinder (601), a clamping block is fixed at the lower end of the L-shaped clamping rod (602), an avoidance groove (2011) is provided on the rotating plate (201), a fixed adjustment block (603) is fixed at the upper end of the L-shaped clamping rod (602), the clamping block (604) is slidably matched with the L-shaped clamping rod (602), and a spring is provided between the fixed adjustment block (603) and the clamping block (604).

9. The motor stator automatic assembly equipment according to claim 8, characterized in that: The pressure strip pressing assembly (6) further comprises a pressure strip placement groove (605) and a stop block (606), wherein a plurality of disassembled pressure strips (20) are arranged in the pressure strip placement groove (605), and a material extraction gap is provided between the pressure strip placement groove (605) and the stop block (606), and the L-shaped clamping rod (602) slides at the material extraction gap.

Images