An automatic motor stator assembly device

Abstract

The present application relates to the technical field of motor stator production and assembly, and discloses a motor stator automatic assembly equipment, which comprises a rotating table mechanism, the rotating table mechanism comprises a rotating plate and a fixed plate, the fixed plate is fixed on a rack, the rotating plate is rotationally connected with the fixed plate at a midpoint position, one end of the rotating table mechanism is provided with a material receiving area, and the other end is provided with a press-fitting area; a guide cylinder assembly is arranged at both ends of the rotating plate; a stacking mechanism is fixedly arranged directly above the press-fitting area, and the stacking mechanism comprises a downward pressing assembly and a side pressing assembly. Through the design of the guide cylinder assembly, the guide cylinder can blow out downwardly sprayed airflow, and in the case that the cooperation gap between the guide cylinder assembly and the silicon steel sheet is very small, the falling silicon steel sheet stator can be neatly and tightly stacked at the lower end of the guide cylinder, the silicon steel sheet does not need to be processed with a buckle point, and the neat and tight stacking of the silicon steel sheet can be ensured, so that magnetic loss is not 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, and the stator core is fixed by stacking 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 stacked, and finally fixed to complete the stacking assembly of the motor stator.

[0003] At present, the stacking assembly of the motor stator mainly includes manual stacking and automatic stacking. The manual stacking 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 stator silicon steel sheets. The manual stacking has low efficiency as a whole, and the counted stator silicon steel sheets are prone to missing.

[0004] The automatic stacking is completed by a machine. A common technology is die-in stacking, which is not to stack the stator silicon steel sheets outside the mold and then put them into the mold, but to directly make the stacking action in the progressive die of the high-speed punch press. One 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, and the whole stator core is taken out from the mold at one time after the stator silicon steel sheets are stacked to the required number. The die-in stacking is also called Die-in Stacking, die-in self-buckling stacking and Auto-Stacking Die in the industry.

[0005] The stacking method needs to process a buckle point on each stator silicon steel sheet to fix the stator silicon steel sheets. However, the buckle point causes magnetic path loss, which affects the performance of the produced motor, and the connection strength of the buckle point is low, and a secondary fixing operation is required. There is also a die-in stacking method by heat bonding. However, the stator silicon steel sheet used in the heat bonding has high machining precision, which results in higher cost of the stator silicon steel sheet. Moreover, no matter which die-in stacking method is used, the cost of the mold is greatly increased. SUMMARY

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

[0007] The present application is achieved by the following technical scheme:

[0008] The utility model provides an automatic assembly equipment of motor stator, including rotating table mechanism, rotating table mechanism includes rotating plate and fixed plate, fixed plate is fixed on the frame, rotating plate is rotationally connected with fixed plate in midpoint position, one end of rotating table mechanism is equipped with material receiving area and is equipped with pressure equipment area on the other end, guiding cylinder subassembly is equipped with in both ends of rotating plate, guiding cylinder subassembly includes cylinder, ring taper wall fixed in cylinder, vice guide strip fixed in ring taper wall and main guide strip fixed in the region of cylinder and ring taper wall, the lower end of vice guide strip is equipped with air jet, air jet communicates with the cavity in cylinder, and the cavity can communicate with external high pressure gas, the stacking mechanism is fixedly arranged above pressure equipment area, the stacking mechanism includes down pressure subassembly and side pressure subassembly, down pressure subassembly is used to press tightly from the upper and lower sides of silicon steel sheet and pressure strip, and side pressure subassembly includes second hydraulic rod, movable plate and side pressure wheel subassembly, and the side pressure wheel subassembly is used to press tightly in the bottom of the clamping groove formed by the stacking of silicon steel sheet.

[0009] In a possible design, the frame includes a top plate, connecting rods and a bottom plate, the top plate and the bottom plate are connected and fixed by the connecting rods, and the frame is fixed on an electric control box.

[0010] In a possible design, a rotating table is rotationally arranged on the rotating plate, a sealing ring is fixed below the rotating table, the top end of the rotating table is fixedly connected with a mounting flange, and the mounting flange is fixedly connected with the guiding cylinder assembly.

[0011] In a possible design, in the material receiving area, a gas blowing connector is fixed on the fixed plate, and the gas blowing connector is connected with an air pipe.

[0012] In a possible design, in the pressure equipment area, a second rotating motor is fixed below 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, a spline sleeve is slidably arranged on the spline shaft, a through hole coaxial with the motor shaft of the second rotating motor is formed in the fixed plate, a coil tube is fixed in the through hole, the coil tube can control the sliding of the spline sleeve on the second rotating motor, and a spline hole is formed in the rotating table.

[0013] In a possible design, the down pressure subassembly includes a first hydraulic rod and a pressure mounting flange, the cylinder body of the first hydraulic rod is fixed on the top plate, and the pressure mounting flange is fixed on the telescopic rod of the first hydraulic rod.

[0014] In a possible design, the movable plate is arranged to slide on the connecting rod, a through hole is arranged at the center of the movable plate, a plurality of side pressing wheel assemblies are evenly arranged around the through hole on the movable plate, the cylinder body of the second hydraulic rod is fixed on the top plate, the movable plate is fixed on the telescopic rod of the second hydraulic rod, each side pressing wheel assembly is fixedly connected with the movable plate, a rolling pressing wheel is arranged on one side of the side pressing wheel assembly which is towards the center of the through hole on the movable plate, a strip-shaped hole is arranged on the side pressing wheel assembly, two locking screws are arranged in the strip-shaped hole, and the side pressing wheel assembly is fixed on the movable plate through the two locking screws.

[0015] In a possible design, the pressing strip pressing assembly further comprises a pressing strip placing groove and a resisting block, a plurality of disassembled and cut pressing strips are arranged in the pressing strip placing groove, a material taking gap is arranged between the pressing strip placing groove and the resisting block, and the L-shaped material clamping rod slides at the material taking gap.

[0016] In a possible design, the pressing strip pressing assembly further comprises a pressing strip placing groove and a resisting block, a plurality of disassembled and cut pressing strips are arranged in the pressing strip placing groove, a material taking gap is arranged between the pressing strip placing groove and the resisting block, and the L-shaped material clamping rod slides at the material taking gap.

[0017] In a possible design, the pressing strip pressing assembly further comprises a pressing strip placing groove and a resisting block, a plurality of disassembled and cut pressing strips are arranged in the pressing strip placing groove, a material taking gap is arranged between the pressing strip placing groove and the resisting block, and the L-shaped material clamping rod slides at the material taking gap.

[0018] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0019] Through the design of the guide cylinder assembly, the guide cylinder assembly can blow downwardly spraying airflow, in the case that the cooperation gap between the guide cylinder assembly and the silicon steel sheet is very small, the falling silicon steel sheet stator is guaranteed to be neatly and tightly stacked at the lower end of the guide cylinder, the lamination precision of the stator is guaranteed, the neatly stacked silicon steel sheet laminations are turned into the pressing area through the rotation of the rotary table mechanism, the stator laminations are loaded into the pressing strip in the pressing area, and pressing is performed through the laminating and pressing mechanism, without the need of processing the buckle point on the silicon steel sheet, the silicon steel sheet can also be neatly and tightly stacked, magnetic loss is not caused, the present application can be used in cooperation with a simple punching and shearing die, there is no special requirement for the used silicon steel sheet, the production and assembly cost of the stator can be more saved, and the assembly quality can be more guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the guide cylinder assembly, the rotary table mechanism, and the stacking assembly in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the guide tube assembly, rotary table mechanism, and stacking assembly viewed from below in an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the guide cylinder assembly in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the guide tube assembly viewed from below in an embodiment of the present invention;

[0026] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 This is a front view of the guide cylinder assembly, the rotary table mechanism, and the stacking assembly in an embodiment of the present invention;

[0028] Figure 8 for Figure 7 Sectional view at point BB;

[0029] Figure 9 for Figure 8 Enlarged view at point C;

[0030] Figure 10 for Figure 8 Enlarged view at point D;

[0031] Figure 11 This is a schematic diagram of the structure of the guide cylinder assembly, the rotary table mechanism, and the pressure strip pressing assembly in an embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the pressure strip pressing assembly in an embodiment of the present invention;

[0033] Figure 13 This is a schematic diagram of the fit between the stator core and the guide cylinder assembly of the present invention.

[0034] The reference numerals in the attached drawings represent: 1-frame, 101-top plate, 102-connecting rod, 103-bottom plate, 2-rotating table mechanism, 201-rotating plate, 2011-clearance groove, 202-fixed plate, 203-air blowing connector, 3-guide cylinder assembly, 301-cylinder body, 302-main guide bar, 303-secondary guide bar, 3031-air nozzle, 304-annular cone wall, 4-press-fit flange, 5-movable plate, 6-press-fitting assembly, 601-press-fitting cylinder, 602-L-shaped clamp. 603-Fixed Adjustment Block, 604-Material Jamming Block, 605-Pressure Strip Placement Groove, 606-Blocking Block, 7-First Hydraulic Rod, 8-Second Hydraulic Rod, 9-Electrical Control Box, 10-Side Pressure Roller Assembly, 1001-Strip Hole, 11-Locking Screw, 12-First Rotary Motor, 13-Second Rotary Motor, 14-Rotating Table, 15-Mounting Flange, 16-Sealing Ring, 17-Splined Sleeve, 18-Limit Sleeve, 19-Air Channel, 20-Pressure Strip, 21-End Pressure Plate, 22-Coil Tube. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0036] Example 1, as Figures 1 to 10 As shown, an automatic assembly equipment for motor stators includes a guide tube assembly 3, a rotary table mechanism 2, and a stacking mechanism. The rotary table mechanism 2 includes a rotating plate 201 and a fixed plate 202. The fixed plate 202 is fixed on the frame 1. The rotating plate 201 and the fixed plate 202 are rotatably connected at the midpoint. One end of the rotary table mechanism 2 is provided with a receiving area and the other end is provided with a pressing area. Two guide tube assemblies 3 are provided at both ends of the rotating plate 201.

[0037] When the rotating plate 201 is parallel to the fixed plate 202, the two guide cylinder assemblies 3 are located directly above the receiving area and the pressing area, respectively. The guide cylinder assembly 3 directly above the receiving area is used to receive the silicon steel sheets that are being pressed down and stack them neatly. The stacking mechanism is fixedly installed directly above the pressing area. The stacking mechanism above the pressing area is used to press and fix the neatly stacked silicon steel sheets that are embedded with the pressure strip 20. The pressure strip 20 can be fixed by manually placing it into the slot or by a robot. No further restrictions are imposed here.

[0038] The guiding cylinder assembly 3 includes a cylinder body 301, a main guide strip 302, a secondary guide strip 303, and a ring taper wall 304. The cylinder body 301 is internally provided with a cavity capable of communicating with external high-pressure gas. The ring taper wall 304 is fixedly arranged at the top of the cylinder body 301. The secondary guide strip 303 is fixedly arranged at the region of the ring taper wall 304. The main guide strip 302 penetrates the cylinder body 301 and the region of the ring taper wall 304. The main guide strip 302 is located at a notch of a silicon steel sheet, and the two sides thereof 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 in an aligned state and will not rotate and dislocate. The lower end of the secondary guide strip 303 is provided with a gas injection port 3031. The gas injection port 3031 communicates with the cavity in the cylinder body 301. In operation, the material receiving area is located directly below the stamping die. The silicon steel sheet punched out by the stamping die first falls into the region of the ring taper wall 304. The gap between the silicon steel sheet and the guiding cylinder assembly 3 in the region of the ring taper wall 304 is large, and the silicon steel sheet can fall smoothly. Before the silicon steel sheet falls into the cylinder body 301, the silicon steel sheet falls below the gas injection port 3031. The gas blown out of the gas injection port 3031 can push the silicon steel sheet to continue falling, so that the fitting gap between the guiding cylinder assembly 3 and the silicon steel sheet is small, and the precision of the stacked silicon steel sheets is ensured.

[0039] It should be noted that in the stamping process, the guiding cylinder assembly 3 has a guiding effect as a whole. When the silicon steel sheet is punched and falls into the guiding cylinder assembly 3 for stacking, the larger the gap between the guiding cylinder assembly 3 and the silicon steel sheet, the more smoothly the silicon steel sheet falls into the bottom of the guiding cylinder assembly 3 to complete the stacking. However, a too large gap will seriously affect the fitting tolerance of the silicon steel sheets, such as the coaxiality and alignment effect between the silicon steel sheets. A small gap between the guiding cylinder assembly 3 and the silicon steel sheet can well ensure the alignment effect between the stacked silicon steel sheets, but it is difficult to make the silicon steel sheet fall smoothly into the bottom of the guiding cylinder assembly 3 to complete the stacking of the silicon steel sheet, and an external force is needed to push the silicon steel sheet into the bottom. For example, a reciprocating air cylinder is used to press the silicon steel sheet into the bottom to complete the stacking. However, such a contact type pushing structure is difficult to adjust, and the moving path is easily interfered with the falling path of the silicon steel sheet. Moreover, the silicon steel sheet is easily damaged after contacting the silicon steel sheet. After the structure of the gas injection port 3031 is adopted in the embodiment, the silicon steel sheet is pressed by air pressure to the bottom of the guiding cylinder assembly 3 to complete the stacking in the case that the gap between the guiding cylinder assembly 3 and the silicon steel sheet is small. The force for the silicon steel sheet to fall and stack is provided, and the falling of the silicon steel sheet is not blocked. At the same time, the coaxiality and alignment precision of the stacked silicon steel sheets are ensured.

[0040] In the embodiment, the rack 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 by the connecting rods 102, the rack 1 is fixed on an electric control box 9, and various electric control elements for controlling normal operation of the device are arranged in the electric control box 9.

[0041] In the embodiment, a rotating table 14 is arranged on the rotating plate 201, a sealing ring 16 is fixed below the rotating table 14, the top end of the rotating table 14 is fixedly connected with a mounting flange 15, the mounting flange 15 is fixedly connected with the guide cylinder assembly 3, so that the mounting flange 15 and the rotating table 14 cooperate to fix the guide cylinder assembly 3 on the rotating plate 201, and the mounting flange 15 and the rotating table 14 are fixed in a detachable manner, so that different guide cylinder assemblies 3 can be installed when processing different sizes of stators, thereby completing the stacking of different models of stators.

[0042] Further, in the material receiving area, a blowing connecting head 203 is fixed on the fixed plate 202, the blowing connecting head 203 is connected with an air pipe, and the air pipe is filled with gas, which enters the guide cylinder assembly 3 from the air passage 19 and is sprayed from the air outlet 3031, in the pressing area, a second rotating motor 13 is fixedly arranged below the fixed plate 202, 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, a spline sleeve 17 is slidably arranged on the spline shaft, a through hole coaxial with the motor shaft of the second rotating motor 13 is arranged on the fixed plate 202, a coil tube 22 is fixed in the through hole, the spline sleeve 17 is fixed with a permanent magnet or is made of a permanent magnetic material, the spline sleeve 17 slides by generating a magnetic field by energizing the coil tube 22, and the energizing direction of the coil tube 22 can also change the magnetic field direction of the coil tube 22, 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 arranged on the rotating table 14, after the external spline of the spline sleeve 17 enters the spline hole, the second rotating motor 13 can control the rotating table 14 to rotate, thereby controlling the guide cylinder assembly 3 to rotate, and finally driving the silicon steel sheets stacked on the guide cylinder assembly 3 to rotate.

[0043] Beneficially, a limiting sleeve 18 is fixed on 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 being excessively ejected, and the spline sleeve 17 can also be completely retracted below the rotating plate 201, thereby not interfering with the rotation of the rotating plate 201.

[0044] In the embodiment, the laminating mechanism comprises a downward pressing assembly and a side pressing assembly. The downward pressing assembly is used to press the pressing strip 20 against the silicon steel sheets at both ends of the stacked silicon steel sheets. The side pressing assembly is used to press the pressing strip from the annular side of the stacked silicon steel sheets, preventing the pressing strip from bending and enabling the pressing strip to be better embedded in the clamping groove formed by the silicon steel stack.

[0045] The downward pressing assembly comprises a first hydraulic rod 7 and a pressing flange 4. The cylinder body of the first hydraulic rod 7 is fixed to the top plate 101. The pressing flange 4 is fixed to the telescopic rod of the first hydraulic rod 7. By extending the first hydraulic rod 7, the silicon steel sheets below the pressing flange 4 can be pressed. For different diameters of the stator, as long as the pressing strip 20 falls within the annular area at the lower end of the pressing flange 4, the downward pressing operation of the stator can be completed.

[0046] Further, the side pressing assembly comprises a second hydraulic rod 8, a movable plate 5, and a side pressing wheel assembly 10. The movable plate 5 is provided with a through hole at the center position. The through hole facilitates the pressing flange 4 to press the stacked silicon steel sheets. The movable plate 5 is slidably arranged on the connecting rod 102. The cylinder body of the second hydraulic rod 8 is fixed to the top plate 101. The movable plate 5 is fixed to the telescopic rod of the second hydraulic rod 8. The through hole of the movable plate 5 is uniformly provided with a plurality of side pressing wheel assemblies 10. Each side pressing wheel assembly 10 is fixedly connected to the movable plate 5. The side pressing wheel assembly 10 is provided with a rolling wheel on the side facing the center of the through hole of the movable plate 5. When the pressing strip 20 on the stator core is rotated to be aligned with the side pressing wheel assembly 10 by the second rotating motor 13, the movable plate 5 drives the side pressing wheel assembly 10 to descend, thereby further pressing the pressing strip 20 from the side by the rolling wheel, and completing the assembly of the stator core.

[0047] Beneficially, the side pressing wheel assembly 10 is provided with a strip-shaped hole 1001. Two locking screws 11 pass through the strip-shaped hole 1001. The side pressing wheel assembly 10 is fixed to the movable plate 5 by the two locking screws 11. By adjusting the position of the locking screw 11 in the strip-shaped hole 1001, the length of the side pressing wheel assembly 10 extending into the side of the through hole of the movable plate 5 can be adjusted, thereby completing the side pressing of the stator of different diameters.

[0048] It should be noted that the buckle point is a local mechanical deformation area, the crystal lattice is severely distorted, the magnetic domain rotation resistance is increased, and the local iron loss is increased. The convexity-dent is a direct metal-metal contact, which is equivalent to short-circuiting two silicon steel sheets that should be insulated. Under an alternating magnetic field, an eddy current loop is formed here, which produces additional eddy current loss. The pressing strip 20 itself is a non-magnetic material (austenitic stainless steel, aluminum alloy, non-magnetic steel, etc.), which has almost no "short circuit" or "shunt" effect on the magnetic flux of the main magnetic circuit, and therefore will not bring additional eddy current loss.

[0049] In the second embodiment, based on the first embodiment, referring to Figures 11 to 13 , further provided is a pressing strip pressing assembly 6, through which automatic pushing of the pressing strip 20 at the pressing groove of the stacked silicon steel sheets is completed, so as to realize full-automatic production of the stator core. The pressing strip pressing assembly 6 comprises a pressing cylinder 601, an L-shaped clamping rod 602, a fixed adjusting block 603 and a clamping block 604, the cylinder body of the pressing cylinder 601 is fixed on the rack 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 avoiding groove 2011, the avoiding groove 2011 is used for providing sufficient space for the clamping block, the upper end of the L-shaped clamping rod 602 is fixed with the fixed adjusting block 603, the clamping block 604 is in sliding fit with the L-shaped clamping rod 602, and the fixed adjusting block 603 and the clamping block 604 are provided with a spring.

[0050] The pressing strip 20 between the clamping block 604 and the clamping block is fixed through the elastic force of the spring, referring to Figure 13 , four rectangular notches for fixing the pressing strip are provided on each silicon steel sheet, and a clamping groove for mounting the pressing strip 20 is formed at each rectangular notch after stacking of the silicon steel sheets, so as to form a plurality of clamping grooves on the stacked stator silicon steel sheets, and referring to Figure 12 , the pressing strip 20 is fixed between the clamping block 604 and the clamping block, after one of the clamping grooves is aligned with the L-shaped clamping rod 602, the pressing strip 20 is pushed into the clamping groove of the silicon steel sheet through the elongation of the pressing cylinder 601, so as to complete automatic loading of the pressing strip 20, the second rotating motor 13 controls the rotation of the spline sleeve 17 through the rotating table 14, the spline sleeve 17 extends into the rotating table 14 to drive the rotating table 14 to rotate, the rotating table 14 drives the guide cylinder assembly 3 fixed thereto to rotate, the main guide strip 302 on the guide cylinder assembly 3 is located in the notch of the silicon steel sheet, so that the stacked silicon steel sheets can be controlled to rotate through the second rotating motor 13, so as to sequentially align different clamping grooves with the L-shaped clamping rod 602, after the clamping groove is aligned with the L-shaped clamping rod 602, the L-shaped clamping rod 602 is pushed to the clamping groove through the elongation of the pressing cylinder 601, the pressing strip 20 fixed on the L-shaped clamping rod 602 is pushed in, the clamping groove in front of the L-shaped clamping rod 602 is rotated, and the elongation and contraction of the pressing cylinder 601 are matched, so as to finally complete loading of the plurality of pressing strips 20 on the stator.

[0051] Further, referring to Figure 12 , the pressing strip pressing assembly 6 further comprises a pressing strip placing groove 605 and a resisting block 606, a plurality of cutting completed pressing strips 20 are arranged in the pressing strip placing groove 605, a taking material seam is arranged between the pressing strip placing groove 605 and the resisting block 606, the L-shaped clamping rod 602 slides at the taking material seam to push out the pressing strip 20 placed in the taking material seam and press it into the clamping groove of the silicon steel sheet.

[0052] Beneficially, the fixed adjusting block 603 is adjustable in the fixed position of the L-shaped material jamming rod 602, so as to realize the clamping of the press strip 20 of various length specifications.

[0053] Finally, it should be noted that in the present embodiment and the previous embodiment, the lower pressing assembly, the side pressing assembly and the press strip pressing assembly 6 can all complete the assembly of various specifications of the stator core, and when assembling stator cores of different specifications, only different guide cylinder assemblies 3 need to be processed, the processing cost of the guide cylinder assembly 3 is also relatively low, and the whole has strong universality, and the die required for stamping is only a simple punching and shearing die, which can reduce the production and assembly cost of the whole stator, while ensuring the processing efficiency and accuracy.

[0054] Working principle: install the guide cylinder assembly 3 required for this assembly on the rotating plate 201, adjust the position state of the guide cylinder assembly 3 below the receiving area, so that the guide cylinder assembly 3 is aligned with the center hole position of the silicon steel sheet, and then start stamping. If the end pressing plate 21 is placed at both ends of the stator, an end pressing plate 21 is loaded on the guide cylinder assembly 3 before stamping. According to the number of silicon steel sheets counted by the grating sensor, the air pump connected to the guide cylinder assembly 3 is also opened when the stamping starts. The falling silicon steel sheet is directly blown down to the rotating plate 201 after falling below the air jet 3031, and is guided by the main guide strip 302 to make the silicon steel sheets on the rotating plate 201 neatly stacked.

[0055] When the number of silicon steel sheets in the receiving area reaches the count, the first rotating motor 12 is started to control the rotating plate 201 to rotate, and the guide cylinder assembly 3 of the pressing area is rotated to the receiving area to receive the next stator. The guide cylinder assembly 3 of the receiving area drives the silicon steel sheets to rotate to the pressing area, and the whole stack of silicon steel sheets is pressed into the press strip 20 through the cooperation of the press strip pressing assembly 6 and the second rotating motor 13. Subsequently, the first hydraulic rod 7 and the second hydraulic rod 8 are controlled to extend, and the press flange 4 is pressed to press the silicon steel sheets tightly. The second hydraulic rod 8 continues to extend after the press flange 4 is pressed tightly, and then the side pressing of the press strip 20 is completed, so that the press strip 20 tightly presses multiple silicon steel sheets. The fully automatic assembly of the stator core is completed, and the stator core after assembly only needs to be taken out from the guide cylinder assembly 3 through an automatic clamp or manual operation.

[0056] For the assembly operation requiring the installation of the end pressing plate 21, only one end pressing plate 21 needs to be placed on the guide cylinder assembly 3 before rotating into the receiving area, and another end pressing plate 21 needs to be placed on the guide cylinder assembly 3 after the receiving is completed.

[0057] 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.

[0058] 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 apparatus for automatically assembling a motor stator, characterized by comprising: The utility model relates to a kind of silicon steel sheet stacking and pressing device, including: Rotary table mechanism (2), the rotary table mechanism (2) includes rotating plate (201) and fixed plate (202), the fixed plate (202) is fixed on rack (1), the rotating plate (201) is rotationally connected with the fixed plate (202) at midpoint position, one end of the rotary table mechanism (2) is equipped with material receiving area and the other end is equipped with pressing area; Guide cylinder assembly (3) is equipped in the rotating plate (201) both ends, the guide cylinder assembly (3) includes cylinder body (301), ring cone wall (304) fixed in the cylinder body (301), vice guide strip (303) fixed in the ring cone wall (304) and main guide strip (302) fixed in the area where the cylinder body (301) and the ring cone wall (304) are located, the lower end of the vice guide strip (303) is equipped with air jet (3031), the air jet (3031) is communicated with the cavity in the cylinder body (301), and the cavity can be communicated with external high-pressure gas; Lamination mechanism is fixedly arranged above the pressing area, and the lamination mechanism includes a lower pressing assembly and a side pressing assembly.

2. The automatic assembling apparatus for a stator of an electric machine according to claim 1, wherein The rack (1) includes 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 by a plurality of connecting rods (102), and the rack (1) is fixed on an electric control box (9).

3. The apparatus of claim 1, wherein A rotating table (14) is rotatably arranged on the rotating plate (201), a sealing ring (16) is fixed below the rotating table (14), a top end of the rotating table (14) is fixedly connected with a mounting flange (15), and the mounting flange (15) is fixedly connected with the guide cylinder assembly (3).

4. The automatic assembling apparatus for a motor stator according to claim 1 or 3, wherein In the material receiving area, a gas blowing connector (203) is fixed on the fixed plate (202), and the gas blowing connector (203) is connected with an air pipe.

5. The apparatus of claim 3, wherein the apparatus further comprises a plurality of the first and second grippers. In the pressing area, a second rotating motor (13) is fixedly arranged 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 arranged on the spline shaft, a through hole coaxial with the motor shaft of the second rotating motor (13) is formed in 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 formed in the rotating table (14).

6. The apparatus of claim 2, wherein The lower pressing assembly includes a first hydraulic rod (7) and a pressing flange (4), a cylinder body of the first hydraulic rod (7) is fixed on the top plate (101), and the pressing flange (4) is fixed on a telescopic rod of the first hydraulic rod (7).

7. The apparatus of claim 2, wherein the apparatus further comprises a plurality of the first and second grippers. The movable plate (5) is slidably arranged on the connecting rod (102), a through hole is arranged at the center position of the movable plate (5), a plurality of side pressing wheel assemblies (10) are uniformly arranged 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), the movable plate (5) is fixed on the telescopic rod of the second hydraulic rod (8), each side pressing wheel assembly (10) is fixedly connected with the movable plate (5), a rolling pressing wheel is arranged on one side of the side pressing wheel assembly (10) which faces the center of the through hole on the movable plate (5), a strip-shaped hole (1001) is arranged on the side pressing wheel assembly (10), two locking screws (11) pass through the strip-shaped hole (1001), and the side pressing wheel assembly (10) is fixed on the movable plate (5) through the two locking screws (11).

8. The apparatus of claim 1, wherein, The pressing strip pressing assembly (6) further comprises a pressing strip placing groove (605) and a resisting block (606), a plurality of disassembled and cut pressing strips (20) are arranged in the pressing strip placing groove (605), a material taking gap is arranged between the pressing strip placing groove (605) and the resisting block (606), and the L-shaped material clamping rod (602) slides in the material taking gap.

9. An apparatus for automatically assembling a stator of an electric machine according to claim 8, characterized in that, ​

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