A kind of permanent magnet synchronous motor stator core lamination equipment

Abstract

The present application relates to the field of stator core manufacturing, in particular to a kind of permanent magnet synchronous motor stator core laminating equipment, including frame and the pressure plate and moving plate of upper and lower sliding arrangement in frame, the laminating equipment further include for the equal force extrusion of stator core partition, and by the locking mechanism of over-extrusion clamping, effectively lock the stator core after superposition, the present application adopts the independent force exertion of silicon steel sheet partition of inner ring plate, middle ring plate and outer ring plate in extrusion mechanism under the linkage action of force exerting component, realize the extrusion force of automatic balance inner ring plate, middle ring plate and outer ring plate to different areas of stator core, effectively prevent the warping deformation of core after laminating due to uneven stress, the present application makes the lower side of inner ring plate and outer ring plate lower than the lower side of middle ring plate in initial state, realize the inner and outer edge area of silicon steel sheet is extruded preferentially, then complete overall laminating, further avoid edge warping.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of stator core manufacturing, in particular to a kind of permanent magnet synchronous motor stator core laminating equipment. BACKGROUND

[0002] The stator core of permanent magnet synchronous motor is usually stacked by a large number of stamping silicon steel sheets, and in the laminating process, the silicon steel sheets of each layer need to be accurately aligned, tightly fitted and firmly and stably stacked to form an effective magnetic circuit and reduce eddy current loss. This process is usually completed on a dedicated stator core laminating equipment, i.e. laminating machine.

[0003] When the laminating machine is working, the operator places the silicon steel sheet stack on the equipment workbench, then manually inserts the clamping sheet into the silicon steel sheet clamping sheet slot and knocks and bends it, then uses the pressing plate on the laminating machine to apply vertical downward pressure to the silicon steel sheet stack, so that the silicon steel sheets of each layer are in close contact, then the laminating machine can press the clamping sheet inserted into the silicon steel sheet clamping sheet slot, and the iron core is axially limited by the clamping sheet bending position, and the silicon steel sheet is radially limited by the friction force when the clamping sheet and the pressed silicon steel sheet are in interference fit, so as to prevent the laminated sheet from loosening and spreading in the subsequent processing or use.

[0004] However, since the silicon steel sheet is usually designed with a positioning structure, i.e. specific protrusions and grooves are pressed on both sides of the silicon steel sheet, the protrusions of the lower silicon steel sheet need to be inserted into the corresponding grooves of the upper silicon steel sheet to achieve positioning. However, when the pressing plate laminates the silicon steel sheet, the pressure cannot be dynamically adjusted according to the structural differences on the surface of the silicon steel sheet, resulting in excessive extrusion force at the protrusion position and insufficient pressure at the flat area. This uneven extrusion force can easily cause the laminated stator core to warp and deform, affecting the geometric accuracy and electromagnetic performance of the core.

[0005] In addition, when the clamping sheet is used for final locking, the rebound force of the stator core laminated sheet and the stress of the clamping sheet itself can cause the clamping sheet to not tightly fit on the surface of the silicon steel sheet, which can affect the structural stability of the stator core under long-term operation or under the action of electromagnetic force, and ultimately affect the quality of the stator core and the reliability of the motor. SUMMARY

[0006] To solve the above technical problems, the technical solution adopted by the present application is: a kind of permanent magnet synchronous motor stator core laminating equipment, including frame and the pressing plate and moving plate that are slidably arranged on the frame, the laminating equipment includes extrusion mechanism for partitioning and uniformly extruding stator core, and locking mechanism for effectively locking stator core after stacking by over-extruding clamping sheet.

[0007] The extrusion mechanism comprises an inner ring plate, a middle ring plate and an outer ring plate which are arranged in sequence from inside to outside, and are slidably arranged on the lower side of the pressing plate through the arc-shaped support plates on the upper portions of the inner ring plate, the middle ring plate and the outer ring plate, the middle ring plate corresponds to the positioning protruding position on the silicon steel sheet, the inner ring plate, the middle ring plate and the outer ring plate are combined together to cover the upper portion of the entire silicon steel sheet, and the lower side of the pressing plate is provided with a force applying assembly.

[0008] The locking mechanism comprises a positioning seat which is slidably arranged on the rack, the positioning seat is vertically slidably provided with a supporting table, the supporting table and the outer ring plate are both provided with a plurality of pressing blocks at equal intervals along the circumference of the outer ring plate, and the locking mechanism further comprises a moving assembly which drives the pressing blocks to move outward and extrude the buckles.

[0009] Preferably, the force applying assembly comprises a moving frame which is fixedly installed on the lower side of the pressing plate at equal intervals along the circumference of the outer ring plate, a first gear and a second gear are rotatably arranged on the moving frame, the first gear and the second gear are meshed, and a first gear rack, a second gear rack and a third gear rack are vertically slidably arranged on the moving frame.

[0010] Preferably, the first gear rack is meshed with the first gear away from the axis of the outer ring plate, the first gear rack is fixedly connected with the outer ring plate, the second gear rack is meshed with the first gear close to the axis of the outer ring plate, the second gear rack is fixedly connected with the middle ring plate, the third gear rack is meshed with the second gear close to the axis of the outer ring plate, and the third gear rack is fixedly connected with the inner ring plate.

[0011] Preferably, a locking piece is slidably arranged on the moving frame along the axial direction of the first gear, one end of the first gear close to the locking piece is hexagonal, an internal hexagonal groove is formed in the end of the locking piece close to the first gear, and a telescopic section and a cylinder fixedly connected with the locking piece are fixedly installed on the moving frame.

[0012] Preferably, a blocking rod is fixedly installed on the upper side of the rack at equal intervals along the circumference of the outer ring plate, the blocking rod penetrates the inside of the pressing plate upward and downward, and the blocking rod is located directly above the first gear rack connected with the outer ring plate.

[0013] Preferably, the moving assembly comprises a plurality of pull plate pieces which are slidably arranged on the supporting table and the outer ring plate on the side close to each other, the pull plate pieces are slidably connected with the corresponding pressing blocks upward and downward, the supporting table and the inner side of the outer ring plate are both fixedly installed with wedge-shaped plates corresponding to the pressing blocks one by one, and the inclined surfaces of the wedge-shaped plates are slidably connected with the corresponding pressing blocks.

[0014] Preferably, two insertion rods are fixedly installed on the lower side of the pull plate piece connected with the outer ring plate, and an insertion hole is formed in the pull plate piece connected with the supporting table for the insertion rods to penetrate.

[0015] Preferably, the support table and the outer ring plate are provided with a plurality of gathering plates at equal intervals along the circumference of the outer ring plate, the gathering plates are fixedly installed with two linkage rods arranged inside and outside, and the support table is provided with a guide groove corresponding to the position of the linkage rods of the outer ring plate.

[0016] Preferably, the lower side of the moving plate is fixedly installed with a wheel frame corresponding to the buckle at equal intervals along the circumference of the outer ring plate, the lower side of the wheel frame is rotatably provided with an upper vortex plate, the lower side of the wheel frame is slidably provided with a T-shaped plate along the radial direction of the outer ring plate, and the T-shaped plate is fixedly installed with a protruding column slidably connected in the slot of the upper vortex plate.

[0017] Preferably, the lower side of the upper vortex plate is fixedly installed with a lower vortex plate, and the lower side of the moving plate is provided with a plurality of F-shaped plates slidably along the radial direction of the outer ring plate at equal intervals along the circumference of the outer ring plate, and the lower part of the horizontal section of the F-shaped plate is fixedly installed with a track column slidably connected in the slot of the lower vortex plate.

[0018] The beneficial effects of the present application are as follows: 1. The inner ring plate, the middle ring plate and the outer ring plate in the extrusion mechanism of the present application independently apply force to the silicon steel sheet under the linkage action of the force applying assembly, wherein the middle ring plate applies pressure to the positioning protruding area of the silicon steel sheet, thereby realizing automatic balancing of the extrusion force of the inner ring plate, the middle ring plate and the outer ring plate on different areas of the stator core, and effectively preventing the warping deformation of the core caused by uneven stress after lamination.

[0019] 2. The blocking rod of the present application limits and blocks the No. 1 rack connected to the outer ring plate, and cooperates with the locking member to lock the rotation angle of the No. 1 gear, so that the lower side of the inner ring plate and the outer ring plate is lower than the lower side of the middle ring plate in the initial state, thereby realizing preferential extrusion of the inner and outer edge areas of the silicon steel sheet, and then completing the overall lamination. This phased pressurization method prolongs the pressure time of the edge area, further avoiding the edge warping phenomenon.

[0020] 3. The present application uses the moving assembly to drive the pressing block to additionally press the buckle bending part, so that the buckle produces excessive bending deformation after the compression of the stator core, offsets the push-away effect of the core lamination rebound force on the buckle, ensures that the buckle is tightly attached to the surface of the silicon steel sheet, and at the same time, the outward pushing force applied by the pressing block against the buckle promotes the further plastic deformation of the buckle bending position, effectively eliminates the stress of the buckle itself, and greatly improves the locking reliability and long-term stability.

[0021] 4. The vertical segment of the F-shaped plate of the present application pushes two gathering plates at the corresponding position, drives the gathering plates to move along the guide groove track, which makes the gathering plates simultaneously apply radial inward extrusion force and axial pressure to the outer edge of the silicon steel sheet, realizes the shaping and strengthening of the edge area, further suppresses the risk of silicon steel sheet edge warping, and improves the overall geometric accuracy of the core. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described in connection with the accompanying drawings and embodiments.

[0023] Figure 1 is a schematic diagram of the overall structure of the application.

[0024] Figure 2 is a schematic diagram of the structure of the alignment seat, support table, gathering plate and pull plate in the application.

[0025] Figure 3 is a schematic diagram of the structure of the pressing plate, outer ring plate, first rack and moving frame in the application.

[0026] Figure 4 is a schematic diagram of the structure of the inner ring plate, middle ring plate, outer ring plate and arc-shaped support plate in the application.

[0027] Figure 5 is a partial sectional view of the support table, first gear, first rack and moving frame in the application.

[0028] Figure 6 is a partial sectional view of the moving frame, first gear, first rack and locking member in the application.

[0029] Figure 7 is a partial sectional view of the support table, gathering plate, wedge-shaped plate and pressing block in the application.

[0030] Figure 8 is a partial sectional view of the outer ring plate, linkage rod and gathering plate in the application.

[0031] Figure 9 is a schematic diagram of the structure of the moving plate, F-shaped plate, insertion rod and lower vortex groove plate in the application.

[0032] Figure 10 is a schematic diagram of the structure of the upper vortex groove plate, lower vortex groove plate, F-shaped plate and gathering plate in the application.

[0033] Figure 11 is a state change diagram of the gathering plate deflected from the initial state to the extrusion state in the application.

[0034] In the figure: 1, rack; 2, extrusion mechanism; 3, locking mechanism; 4, buckle; 11, pressing plate; 12, moving plate; 21, inner ring plate; 22, middle ring plate; 23, outer ring plate; 24, arc-shaped support plate; 25, force applying assembly; 26, gathering plate; 31, alignment seat; 32, supporting table; 33, pressing block; 34, moving assembly; 121, wheel frame; 122, upper vortex groove plate; 123, T-shaped plate; 124, lower vortex groove plate; 125, F-shaped plate; 251, moving frame; 252, first gear; 253, first rack; 254, locking piece; 255, air cylinder; 256, blocking rod; 257, second gear; 258, second rack; 259, third rack; 261, linkage rod; 341, pull plate piece; 342, wedge-shaped plate; 343, insertion rod. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below. The embodiments described below are exemplary only, and are not to be construed as limiting the present application. Where specific technical or conditions are not mentioned in the embodiments, the technical or conditions described in the literature in the art or according to the product specification are used.

[0036] Referring to Figure 1 and Figure 2 , a permanent magnet synchronous motor stator core lamination device includes a rack 1 and a pressing plate 11 and a moving plate 12 which are slidably arranged on the rack 1. The lamination device further includes an extrusion mechanism 2 for uniformly extruding the stator core in sections, and a locking mechanism 3 for effectively locking the stator core after lamination by over-extruding a buckle 4.

[0037] When the lamination operation of the stator core is required, the operator first places the silicon steel sheets stacked together inside the locking mechanism 3, then manually inserts the buckle 4 into the buckle 4 slot reserved on the stacked silicon steel sheets, and then bends the buckle 4 by knocking and tightly abuts the buckle 4 slot of the silicon steel sheet, thereby pre-positioning the position of the buckle 4.

[0038] Then move the silicon steel sheet directly below the pressing plate 11, and then move the pressing plate 11 downward, so that the pressing plate 11 applies uniform extrusion force to the silicon steel sheet in sections through the extrusion mechanism 2, to ensure that the protruding position on the silicon steel sheet receives the same extrusion force as the rest of the position, and then move the moving plate 12 downward, so that the moving plate 12 tightly abuts and over-bends the buckle 4 through the locking mechanism 3, thereby offsetting the push-off effect of the buckle 4 when the silicon steel sheet rebounds, and ensuring the locking effect of the buckle 4 on the silicon steel sheet.

[0039] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4, the extrusion mechanism 2 comprises an inner ring plate 21, a middle ring plate 22 and an outer ring plate 23 which are nested from inside to outside in sequence, the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 are slidably arranged on the lower side of the pressing plate 11 through the arc-shaped support plates 24 on the upper parts thereof, the middle ring plate 22 corresponds to the positioning protrusion position on the silicon steel sheet, the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 are combined together to cover the upper part of the entire silicon steel sheet, and the lower side of the pressing plate 11 is provided with a force applying assembly 25.

[0040] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , the locking mechanism 3 comprises a positioning seat 31 which is slidably arranged on the rack 1, the positioning seat 31 is vertically slidably provided with a supporting table 32, the supporting table 32 and the outer ring plate 23 are both provided with a plurality of pressing blocks 33 which are equidistantly arranged along the circumference of the outer ring plate 23, and the locking mechanism 3 further comprises a moving assembly 34 which drives the pressing blocks 33 to move outward and extrude the clamping piece 4.

[0041] It should be noted that the lower part of the positioning seat 31 is in a plate structure, the upper part is in a tubular structure, the outer diameter of the tubular structure of the upper part of the positioning seat 31 is the same as the inner diameter of the silicon steel sheet, the front lower side of the rack 1 is provided with a jacking structure, the rear end of the rack 1 is fixedly provided with a telescopic section and a No. 1 hydraulic cylinder which is fixedly connected with the plate structure of the positioning seat 31, and in the initial state, the positioning seat 31 and the supporting table 32 are located in the front part of the pressing plate 11, and the jacking structure pushes the supporting table 32 upward, so that the upper side of the supporting table 32 is flush with the upper side of the tubular structure of the positioning seat 31.

[0042] When it is necessary to stack and press the silicon steel sheets, the operator manually places the stacked silicon steel sheets on the upper side of the supporting table 32, and arranges the silicon steel sheets coaxially with the tubular structure of the positioning seat 31, then moves the supporting table 32 downward through the jacking structure, and the silicon steel sheets move downward synchronously with the supporting table 32 under the action of gravity, so that the tubular structure of the positioning seat 31 is inserted into the inside of the stacked silicon steel sheets, thereby supporting the silicon steel sheets from inside.

[0043] Then the operator manually inserts the clamping piece 4 into the clamping piece groove reserved in the silicon steel sheets which are stacked together, then the operator bends the clamping piece 4 by knocking and abuts the clamping piece 4 against the clamping piece groove of the silicon steel sheet, thereby pre-positioning the position of the clamping piece 4, and then the telescopic section of the No. 1 hydraulic cylinder is retracted, so that the positioning seat 31 drives the supporting table 32 and the silicon steel sheets to move to the coaxial position at the lower part of the outer ring plate 23.

[0044] Referring to Figure 3 and Figure 5The force applying assembly 25 comprises a moving frame 251 fixedly installed on the lower side of the pressing plate 11 at equal intervals along the circumference of the outer ring plate 23, a first gear 252 and a second gear 257 are rotatably arranged on the moving frame 251 and have the same diameter, the first gear 252 is engaged with the second gear 257, and a first rack 253, a second rack 258 and a third rack 259 are vertically slidably arranged on the moving frame 251.

[0045] Referring to Figure 3 , Figure 4 and Figure 5 , the first rack 253 is engaged with the first gear 252 on the side away from the axis of the outer ring plate 23, the first rack 253 is fixedly connected with the outer ring plate 23, the second rack 258 is engaged with the first gear 252 on the side close to the axis of the outer ring plate 23, the second rack 258 is fixedly connected with the middle ring plate 22, and the third rack 259 is engaged with the second gear 257 on the side close to the axis of the outer ring plate 23, the third rack 259 is fixedly connected with the inner ring plate 21.

[0046] Referring to Figure 3 , Figure 5 and Figure 6 , a locking piece 254 is slidably arranged on the moving frame 251 along the axial direction of the first gear 252, one end of the first gear 252 close to the locking piece 254 is hexagonal, the locking piece 254 is provided with an internal hexagonal groove at one end close to the first gear 252, and a gas cylinder 255 fixedly connected with the locking piece 254 is fixedly installed on the moving frame 251.

[0047] Referring to Figure 1 , Figure 3 and Figure 5 , a blocking rod 256 is fixedly installed on the upper side of the rack 1 at equal intervals along the circumference of the outer ring plate 23, the blocking rod 256 penetrates the inside of the pressing plate 11 upward and downward, and the blocking rod 256 is located directly above the first rack 253.

[0048] It should be noted that the second hydraulic cylinder is fixedly installed on the upper side of the rack 1, the extension section of the second hydraulic cylinder is fixedly connected with the pressing plate 11, in the initial state, the extension section of the second hydraulic cylinder is in the contracted state, so that the second hydraulic cylinder drives the pressing plate 11 to be located close to the cylinder body of the second hydraulic cylinder, thereby driving the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 to be located on the upper part of the silicon steel sheet, so as to prevent the silicon steel sheet from being blocked from moving.

[0049] At this time, the upper end of the first rack 253 abuts against the lower end face of the corresponding blocking rod 256, so that the blocking rod 256 drives the first rack 253 through the reaction force on the first rack 253, thereby making the lower side of the first rack 253 located below the lower side of the second rack 258, and further making the lower side of the outer ring plate 23 located below the lower side of the middle ring plate 22.

[0050] Since the first gear 252 is engaged with the second gear 257, the side of the first gear 252 and the second gear 257 away from each other moves in the same direction, so that the first rack 253 and the third rack 259 always move synchronously in the same direction, and then the lower side of the outer ring plate 23 and the inner ring plate 21 are located below the lower side of the middle ring plate 22 in the initial state, and the lower side of the outer ring plate 23 and the inner ring plate 21 are flush.

[0051] In the initial state, the telescopic section of the cylinder 255 is in the contracted state, so that the inner hexagonal sleeve on the locking piece 254 is arranged outside the outer hexagonal structure of the first gear 252, thereby locking the rotation angle of the first gear 252 and the second gear 257, and then preventing the relative height change of the outer ring plate 23 and the middle ring plate 22.

[0052] When the silicon steel sheet moves to the coaxial position below the outer ring plate 23, the telescopic section of the second hydraulic cylinder is extended to drive the pressing plate 11 to move downward, the pressing plate 11 drives the moving frame 251 to move downward synchronously, the moving frame 251 drives the first rack 253, the second rack 258 and the third rack 259 to move downward through the first gear 252 and the second gear 257 which cannot rotate, so that the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 move downward synchronously, and the lower side of the outer ring plate 23 and the inner ring plate 21 abut against the inner and outer edges of the silicon steel sheet before the middle ring plate 22, so as to press the inner and outer edges of the silicon steel sheet first.

[0053] Then the telescopic section of the cylinder 255 is extended to drive the inner hexagonal groove of the locking piece 254 to move to a position not in contact with the outer hexagonal structure of the first gear 252, so as to restore the rotation of the first gear 252 and the second gear 257, and then the telescopic section of the second hydraulic cylinder is extended again to drive the pressing plate 11 to move downward, so that the pressing plate 11 drives the first gear 252 and the second gear 257 to move downward through the moving frame 251, at this time, since the outer ring plate 23 and the inner ring plate 21 are blocked by the silicon steel sheet and cannot move downward again, the first gear 252 and the second gear 257 move downward relative to the first rack 253 and the third rack 259 under the driving of the moving frame 251, so that the first gear 252 and the second gear 257 rotate reversely synchronously under the meshing effect, and then the first gear 252 drives the second rack 258 to move downward relative to the first gear 252, until the lower side of the middle ring plate 22 abuts against the positioning convex of the silicon steel sheet.

[0054] When the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 are all abutted on the silicon steel sheet, the relative movement between the first gear 252, the second gear 257 and the first rack 253, the second rack 258 and the third rack 259 cannot occur any more, so that the first gear 252 and the second gear 257 do not rotate, which makes the inner ring plate 21, the middle ring plate 22, the outer ring plate 23 and the moving frame 251 locked as a whole.

[0055] Then the pressing plate 11 continues to move downward, so that the pressing force of the pressing plate 11 is evenly distributed to the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 through the moving frame 251, so that the pressing force of the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 on the silicon steel sheet is the same, thereby automatically balancing the pressing force of the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 on different areas of the stator core, effectively preventing the warping deformation of the core after stacking due to uneven force.

[0056] Referring to Figure 1 and Figure 9 , the moving plate 12 is fixedly installed with wheel frames 121 corresponding to the buckles 4 at equal intervals along the circumference of the outer ring plate 23.

[0057] It should be noted that the wheel frames 121 are rotatably provided with extrusion wheels on the side close to the axis of the outer ring plate 23, and the third hydraulic cylinder is fixedly installed on the upper side of the pressing plate 11, and the extension section of the third hydraulic cylinder is fixedly connected with the moving plate 12, and in the initial state, the extension section of the third hydraulic cylinder is in the contracted state, so that the moving plate 12 and the pressing plate 11 are in the position close to each other in the initial state.

[0058] When the pressing plate 11 moves downward, the moving plate 12 is driven by the third hydraulic cylinder to move downward synchronously, and when the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 extrude the silicon steel sheets stacked, the extension section of the third hydraulic cylinder drives the moving plate 12 to move downward relative to the pressing plate 11, so that the moving plate 12 drives the extrusion wheels to move to the positions of the buckles 4 through the wheel frames 121, so that the extrusion wheels roll outside the vertical sections of the corresponding buckles 4 and extrude the buckles 4 along the radial direction of the silicon steel sheet, so that the buckles 4 are in interference fit with the silicon steel sheets after being pressed, so as to lock the silicon steel sheets by friction.

[0059] It should be noted that when the silicon steel sheets are placed on the supporting table 32, the operator manually adjusts the position of the buckle groove on the silicon steel sheet, so that when the moving plate 12 moves downward, the extrusion wheels move along the vertical sections of the buckles 4.

[0060] Referring to Figure 2 , Figure 3 , Figure 5 and Figure 7The moving assembly 34 comprises a plurality of pull plate members 341 arranged on the outer ring plate 23 in a radial direction and located on the side of the support table 32 and the outer ring plate 23 close to each other, the pull plate members 341 are connected with the corresponding pressing blocks 33 in a sliding manner, the support table 32 and the inner side of the outer ring plate 23 are fixedly installed with wedge-shaped plates 342 corresponding to the pressing blocks 33, and the inclined surfaces of the wedge-shaped plates 342 are connected with the corresponding pressing blocks 33 in a sliding manner.

[0061] Referring to Figure 5 The lower side of the pull plate member 341 connected to the outer ring plate 23 is fixedly installed with two insertion rods 343, and the pull plate member 341 connected to the support table 32 is provided with an insertion hole for the insertion rod 343 to pass through.

[0062] When the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 are used to extrude the silicon steel sheets arranged in pairs, the outer ring plate 23 drives the insertion rod 343 to move downward and insert into the insertion hole of the pull plate member 341 on the support table 32, so as to connect the two pull plate members 341 at the corresponding positions.

[0063] Referring to Figure 9 and Figure 10 The lower side of the wheel frame 121 is rotatably provided with an upper vortex groove plate 122, and the lower side of the wheel frame 121 is arranged with a T-shaped plate 123 in a radial direction of the outer ring plate 23, and the T-shaped plate 123 is fixedly installed with a protruding column connected with the slot of the upper vortex groove plate 122 in a sliding manner.

[0064] It should be noted that the upper vortex groove plate 122 and the moving plate 12 are jointly hinged with a No. 4 hydraulic cylinder.

[0065] When the extrusion wheel moves along the vertical section of the clamping piece 4, the moving plate 12 drives the T-shaped plate 123 and the upper vortex groove plate 122 to move synchronously through the wheel frame 121, and when the extrusion wheel moves to the lower part of the clamping piece 4, the moving plate 12 is moved upward to drive the extrusion wheel to move to the middle part of the vertical section of the clamping piece 4, so that the wheel frame 121 drives the T-shaped plate 123 to move to the middle part of the two insertion rods 343 at the corresponding positions.

[0066] It should be noted that the distance between the two insertion rods 343 at the corresponding positions is greater than the width of a section of the T-shaped plate 123 arranged in a radial direction of the outer ring plate 23, and is less than the length of a section of the T-shaped plate 123 arranged in a tangential direction of the outer ring plate 23, and the slot of the upper vortex groove plate 122 has a trend of moving away from the axis of the outer ring plate 23 in the positive rotation direction.

[0067] When the T-shaped plate 123 moves to the middle of the two corresponding position of the insertion rod 343, the extension section of the No. 4 hydraulic cylinder is extended to drive the upper vortex slot plate 122 to rotate forward, so that the upper vortex slot plate 122 synchronously drives all the T-shaped plates 123 to move away from the axis of the outer ring plate 23, and the T-shaped plate 123 pulls the corresponding two insertion rods 343 through the segment of the T-shaped plate 123 arranged along the tangent of the outer ring plate 23, so that the corresponding two insertion rods 343 drive the upper and lower corresponding position of the two pull plate members 341 to move outward along the radial direction of the outer ring plate 23.

[0068] The pull plate member 341 drives the pressing piece 33 to move outward, and the upper pressing piece 33 moves downward along the inclined surface of the corresponding wedge-shaped plate 342, and the lower pressing piece 33 moves upward along the inclined surface of the corresponding wedge-shaped plate 342, so that the pressing piece 33 additionally presses the bent part of the clamping piece 4, thereby over-bending the clamping piece 4, offsetting the pushing away effect of the silicon steel sheet rebound force on the clamping piece 4, ensuring that the clamping piece 4 is tightly attached to the surface of the silicon steel sheet, and at the same time, the outward movement of the pressing piece 33 can promote the clamping piece 4 to further plastically deform at the bending position, effectively eliminating the stress of the clamping piece 4 itself, and greatly improving the locking reliability and long-term stability.

[0069] Referring to Figure 5 , Figure 8 , Figure 9 and Figure 10 , the side of the supporting table 32 and the outer ring plate 23 close to each other is provided with a plurality of gathering plates 26 along the circumferential direction of the outer ring plate 23 at equal intervals, and the gathering plate 26 is fixedly installed with two inner and outer arranged linkage rods 261, and the positions corresponding to the linkage rods 261 of the supporting table 32 and the outer ring plate 23 are provided with guide grooves.

[0070] It should be noted that the gathering plate 26 is sequentially arranged in the radial direction of the outer ring plate 23 from inside to outside in the form of a horizontal plate, an arc, and an inclined plate, and the two inner and outer arranged linkage rods 261 are fixedly connected to the horizontal plate of the gathering plate 26, the guide grooves of the linkage rods 261 close to the axis of the outer ring plate 23 on the same gathering plate 26 are arranged obliquely, and the guide grooves of the linkage rods 261 away from the axis of the outer ring plate 23 on the same gathering plate 26 are arranged horizontally.

[0071] When the operator places the stacked silicon steel sheets on the supporting table 32, the outer edge of the stacked silicon steel sheets abuts against the arc-shaped structure of the gathering plate 26 on the supporting table 32, and when the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 extrude the stacked silicon steel sheets, the arc-shaped structure of the gathering plate 26 on the outer ring plate 23 abuts against the outer edge of the stacked silicon steel sheets.

[0072] Referring to Figure 9 , Figure 10 and Figure 11The lower side of the upper vortex groove plate 122 is fixedly installed with a lower vortex groove plate 124, and the lower side of the moving plate 12 is provided with a plurality of F-shaped plates 125 which slide along the radial direction of the outer ring plate 23 at equal intervals along the circumferential direction of the outer ring plate 23, and the lower part of the horizontal section of the F-shaped plate 125 is fixedly installed with a track column which is slidably connected inside the slot of the lower vortex groove plate 124.

[0073] It should be noted that the slots on the lower vortex groove plate 124 have a tendency to gradually move towards the axis of the outer ring plate 23 in the positive rotation direction.

[0074] When the T-shaped plate 123 moves to the middle position of the insertion rod 343, the moving plate 12 drives the vertical section of the F-shaped plate 125 to correspond to the outer side of the gathering plate 26 at two corresponding positions, and when the upper vortex groove plate 122 rotates, the upper vortex groove plate 122 drives the lower vortex groove plate 124 to rotate synchronously, so that the lower vortex groove plate 124 drives the F-shaped plate 125 to move synchronously towards the axis of the outer ring plate 23, so that the F-shaped plate 125 synchronously pushes the two corresponding positions of the gathering plate 26 through the vertical section thereof.

[0075] When the gathering plate 26 is pushed from the outside to the inside along the radial direction of the outer ring plate 23, as shown in Figure 11 , the gathering plate 26 drives the linkage rod 261 on the side away from the axis of the outer ring plate 23 to move along the corresponding horizontally arranged guide slot, and at the same time, the gathering plate 26 drives the linkage rod 261 on the side close to the axis of the outer ring plate 23 to move along the corresponding obliquely arranged guide slot, so that the gathering plate 26 moves towards the axis of the outer ring plate 23 while the gathering plate 26 is flipped around the linkage rod 261 on the side away from the axis of the outer ring plate 23, and the arc-shaped structure on the gathering plate 26 presses the silicon steel sheet, which makes the gathering plate 26 synchronously exert radial inward extrusion force and axial compression force on the outer edge of the silicon steel sheet, realizes the shaping and reinforcing compression of the edge region, further suppresses the risk of silicon steel sheet edge warping, and improves the overall geometric accuracy of the core.

[0076] Referring to Figures 1 to 10 , the present application further comprises the following steps when the silicon steel sheets are laminated: first, the operator manually places the stacked silicon steel sheets on the upper side of the support table 32, then manually inserts the clamping piece 4 into the clamping piece slot reserved on the silicon steel sheets, then the operator prepositions the clamping piece 4 in the clamping piece slot of the silicon steel sheet, and then moves the silicon steel sheet to the coaxial position at the lower part of the outer ring plate 23.

[0077] Second, the telescopic section of the No. 2 hydraulic cylinder is extended, so that the lower side of the outer ring plate 23 and the inner ring plate 21 abut against the inner and outer edge positions of the silicon steel sheet to exert pressure, then the telescopic section of the air cylinder 255 is extended, the rotation of the No. 1 gear 252 and the No. 2 gear 257 is restored, the pressing plate 11 continues to move downward, and the inner ring plate 21, the middle ring plate 22 and the outer ring plate 23 all force the silicon steel sheet.

[0078] Thirdly, the telescopic section of the third hydraulic cylinder is extended to drive the moving plate 12 to move downwards relative to the pressing plate 11, so that the moving plate 12 drives the extruding wheel to move to the position of each clamping sheet 4 through the wheel frame 121, so that the extruding wheel extrudes the clamping sheet 4 in the radial direction of the silicon steel sheet, so that the clamping sheet 4 is in interference fit with the silicon steel sheet after being pressed, so as to lock the silicon steel sheet by friction.

[0079] Fourthly, when the T-shaped plate 123 moves to the middle part of the inserting rod 343, the telescopic section of the fourth hydraulic cylinder is extended, so that the pulling plate 341 drives the pressing block 33 to move outwards, and at the same time, the pressing block 33 additionally presses the bending part of the clamping sheet 4, so as to offset the pushing-away effect of the silicon steel sheet rebounding force on the clamping sheet 4, and promote the further plastic deformation of the bending position of the clamping sheet 4.

[0080] Fifthly, the upper vortex groove plate 122 drives the lower vortex groove plate 124 to rotate synchronously, so that the F-shaped plate 125 pushes the two corresponding positions of the gathering plate 26, which makes the gathering plate 26 synchronously extrude the outer edge of the silicon steel sheet in the radial direction and in the axial direction, so as to realize the shaping and strengthening of the edge region.

[0081] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing 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 a limitation of the present application.

[0082] In addition, the terms "first", "second", "one", "two" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0083] In this application, unless otherwise clearly indicated and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0084] The embodiments of the specific implementation are the preferred embodiments of the application, not limited to the protection scope of the application, therefore, any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A permanent magnet synchronous motor stator core lamination device, comprising a rack, a pressing plate and a moving plate which are arranged on the rack in an up-down sliding mode, characterized in that, The laminating device also comprises an extruding mechanism for partitioning and uniformly extruding the stator core, and a locking mechanism for effectively locking the stator core after lamination by over-extruding the clamping sheet; The extruding mechanism comprises an inner ring plate, a middle ring plate and an outer ring plate arranged in sequence from inside to outside, and the inner ring plate, the middle ring plate and the outer ring plate are slidably arranged on the lower side of the pressing plate through the arc-shaped support plates on the upper portions of the inner ring plate, the middle ring plate and the outer ring plate, the middle ring plate corresponds to the positioning protrusion position on the silicon steel sheet, the inner ring plate, the middle ring plate and the outer ring plate are combined together to cover the upper portion of the entire silicon steel sheet, and the lower side of the pressing plate is provided with a force applying assembly; The locking mechanism comprises a positioning seat slidably arranged on the rack, and a supporting table vertically slidably arranged on the positioning seat, and a plurality of pressing blocks are equidistantly arranged along the circumference of the outer ring plate on the supporting table and the outer ring plate, and the locking mechanism further comprises a moving assembly for driving the pressing blocks to move outward and extrude the clamping sheet; The force applying assembly comprises a moving frame equidistantly fixedly installed on the lower side of the pressing plate along the circumference of the outer ring plate, a first gear and a second gear rotatably arranged on the moving frame, the first gear and the second gear being in engagement, and a first gear rack, a second gear rack and a third gear rack vertically slidably arranged on the moving frame; The first gear rack is engaged with the side of the first gear away from the axis of the outer ring plate, the first gear rack is fixedly connected with the outer ring plate, the second gear rack is engaged with the side of the second gear close to the axis of the outer ring plate, the second gear rack is fixedly connected with the middle ring plate, the third gear rack is engaged with the side of the second gear close to the axis of the outer ring plate, and the third gear rack is fixedly connected with the inner ring plate.

2. A permanent magnet synchronous motor stator core lamination stacking apparatus according to claim 1, characterized in that, A locking piece is slidably arranged on the moving frame along the axial direction of the first gear, the end of the first gear close to the locking piece is hexagonal, the end of the locking piece close to the first gear is provided with a hexagonal groove, and a cylinder fixedly installed on the moving frame is connected with the locking piece.

3. A permanent magnet synchronous motor stator core stacking apparatus according to claim 1, characterized by, A blocking rod is equidistantly fixedly installed on the upper side of the rack along the circumference of the outer ring plate, the blocking rod penetrates the inside of the pressing plate, and the blocking rod is located directly above the first gear rack.

4. A permanent magnet synchronous motor stator core stacking apparatus according to claim 1, characterized by, The moving assembly comprises a plurality of pull plate pieces slidably arranged on the supporting table and the outer ring plate on the side close to each other along the radial direction of the outer ring plate, the pull plate pieces are slidably connected with the corresponding pressing blocks, the supporting table and the outer ring plate are both fixedly installed with wedge-shaped plates corresponding to the pressing blocks, and the inclined surfaces of the wedge-shaped plates are slidably connected with the corresponding pressing blocks.

5. A permanent magnet synchronous motor stator core lamination stacking apparatus according to claim 4, characterized in that, Two insertion rods are fixedly installed on the lower side of the pull plate piece connected with the outer ring plate, and an insertion hole is formed on the pull plate piece connected with the supporting table for the insertion rods to penetrate.

6. A permanent magnet synchronous motor stator core stacking apparatus according to claim 1, characterized by, A plurality of gathering plates are equidistantly arranged along the circumference of the outer ring plate on the supporting table and the outer ring plate, two inner and outer linkage rods are fixedly installed on the gathering plates, and guide grooves are formed on the supporting table and the outer ring plate corresponding to the linkage rods.

7. A permanent magnet synchronous motor stator core lamination stacking apparatus according to claim 1, characterized by, A wheel frame corresponding to the clamping sheet is equidistantly fixedly installed on the lower side of the moving plate along the circumference of the outer ring plate, an upper vortex plate is rotatably arranged on the lower side of the wheel frame, a T-shaped plate is slidably arranged on the lower side of the wheel frame along the radial direction of the outer ring plate, and a protruding column slidably connected in the slot of the upper vortex plate is fixedly installed on the T-shaped plate.

8. A permanent magnet synchronous motor stator core lamination stacking apparatus according to claim 7, characterized in that, The lower side of the upper vortex groove plate is fixedly installed with a lower vortex groove plate, and the lower side of the moving plate is provided with a plurality of F-shaped plates sliding along the radial direction of the outer ring plate at equal intervals along the circumferential direction of the outer ring plate, and the lower part of the horizontal section of the F-shaped plate is fixedly installed with a track column slidingly connected inside the slot of the lower vortex groove plate.

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