CN116117477A

CN116117477A - Full-automatic press-fitting equipment

Info

Publication number: CN116117477A
Application number: CN202211701643.XA
Authority: CN
Inventors: 李家敏; 贺竞人
Original assignee: Jiangsu Yuan Tech Intelligent Technology Co ltd
Current assignee: Jiangsu Yuan Tech Intelligent Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-16

Abstract

The invention discloses full-automatic press-fitting equipment, which comprises a lower supporting component and a press-fitting mechanism arranged above the lower supporting component, wherein the lower supporting component comprises a fixed supporting seat and a movable supporting seat which is arranged in the fixed supporting seat in an up-and-down movable manner; the fixed supporting seat is provided with a limiting supporting groove for limiting the peripheral position of the shell; the movable supporting seat comprises a base for supporting the lower end surface of the iron core, and a first positioning block which protrudes upwards from the surface of the base and positions the inner periphery of the lower part of the iron core; the press-fitting mechanism comprises a press-fitting component which moves up and down; the press-fit assembly comprises a mounting cylinder column, an upper pressing plate arranged on the lower end face of the mounting cylinder column and a second positioning block protruding out of the lower surface of the upper pressing plate to position the inner periphery of the upper portion of the iron core. The invention can ensure that the stator core and the shell are coaxially pressed, improve the stability and reliability of the pressing process, and improve the assembly efficiency and the product quality.

Description

Full-automatic press-fitting equipment

[ field of technology ]

The invention belongs to the technical field of motor assembly equipment, and particularly relates to full-automatic press-fitting equipment.

[ background Art ]

Motors are widely used in various fields as power source components. The motor generally includes a motor housing, two end caps disposed at both ends of the motor housing, a stator disposed inside the motor housing, and a rotor. When the motor is assembled, the stator is required to be installed in the motor shell, certain assembly requirements are met between the stator and the motor shell, and the stator is required to be tightly matched after assembly.

In the prior art, patent publication number CN208231206U discloses a main driving motor stator press-mounting device, which is provided with a positioning spigot on a platform surface for positioning a motor housing, then an internal supporting type clamp is utilized to internally support a stator core, then the stator core is placed into the motor housing, and meanwhile, a pressing plate is arranged on the clamp, and the pressing plate is utilized to press the stator core into the motor housing from the upper end face of the stator core, so that automatic press-mounting is realized. The automatic press fitting of the stator core and the shell is realized, but the following disadvantages exist:

(1) In actual press-fitting operation, the bottom of the stator core is in a suspended state, only the upper end face is subjected to axial pressure, and when the stator core is pressed down, the central axis of the stator core is easy to deviate, so that the circumferential surface of the stator core and the surface of the inner wall of the shell are blocked obliquely, on one hand, the press-fitting resistance is increased, and on the other hand, if the blocking is serious and forced to press in, a product is possibly crushed, and if the press-fitting fails without force pressing;

(2) After the iron core is put into the casing, before the internal stay anchor clamps are not loosened, the position of iron core is ensured, but after the internal stay anchor clamps are loosened, at this moment, the position state of iron core on the casing is the initial state before the pressure equipment, after the internal stay anchor clamps are loosened, there is the gap between upper portion inner wall of iron core and casing, leads to the iron core axis skew easily, when the pressure equipment, then leads to the tilting jam phenomenon easily.

Accordingly, there is a need to provide a new fully automatic press-fitting apparatus to solve the above-mentioned problems.

[ invention ]

The invention mainly aims to provide full-automatic press-fitting equipment, which can ensure that a stator core and a shell are coaxially pressed, improve the stability and reliability of the press-fitting process, and improve the assembly efficiency and the product quality.

The invention realizes the aim through the following technical scheme: the full-automatic press-fitting equipment comprises a lower supporting component and a press-fitting mechanism arranged above the lower supporting component, wherein the lower supporting component comprises a fixed supporting seat and a movable supporting seat which is arranged in the fixed supporting seat in an up-and-down movable manner; the fixed supporting seat is provided with a limiting supporting groove for limiting the peripheral position of the shell; the movable supporting seat comprises a base for supporting the lower end surface of the iron core, and a first positioning block which protrudes upwards from the surface of the base and positions the inner periphery of the lower part of the iron core; the press-fitting mechanism comprises a press-fitting component which moves up and down; the press-fit assembly comprises a mounting cylinder column, an upper pressing plate arranged on the lower end face of the mounting cylinder column and a second positioning block protruding out of the lower surface of the upper pressing plate to position the inner periphery of the upper portion of the iron core.

Further, a first rotation stopping limiting block which is inserted into a corresponding notch on the shell in the press mounting process is movably arranged up and down on the mounting cylinder column; the width of the first rotation stopping limiting block is equal to that of the notch; the installation cylinder is characterized in that a vertical sliding rail is arranged on the outer peripheral surface of the installation cylinder, the first rotation stopping limiting block is arranged on the sliding rail in a sliding mode through a sliding block, and the first rotation stopping limiting block is propped downwards through a first elastic piece to keep an extending state.

Further, a first floating pressing plate which elastically floats up and down is arranged on the base; the base is provided with a plurality of first riveting ejector pins which are in one-to-one correspondence with the positions of the magnetic sheets in the iron core; the first riveting thimble is embedded in the first floating pressing plate in an initial state, and extends out of the surface of the first floating pressing plate to rivet the bottom shaft end face of the iron core after the distance between the first floating pressing plate and the base is reduced.

Further, a plurality of second elastic pieces for upwards supporting the first floating pressing plate are arranged between the first floating pressing plate and the base.

Further, the lower surface of the upper pressing plate is provided with a second floating pressing plate in an up-down floating mode, the upper pressing plate is provided with a plurality of second riveting ejector pins corresponding to the positions of the magnetic sheets in the iron core in a one-to-one mode, the second riveting ejector pins are embedded in the second floating pressing plate in an initial state, and after the distance between the second floating pressing plate and the upper pressing plate is reduced, the second floating pressing plate extends out of the surface of the second floating pressing plate to rivet the top shaft end face of the iron core.

Further, a plurality of third elastic pieces for downwards supporting the second floating pressing plate are arranged between the second floating pressing plate and the upper pressing plate.

Further, a second rotation stopping limiting block which is matched with the groove on the inner hole wall of the iron core to realize angle positioning is arranged on the first positioning block.

Further, the device also comprises a shell conveying mechanism for conveying the shell to the lower support assembly, an iron core conveying mechanism for conveying the iron core to the lower support assembly and an oiling mechanism for oiling the inner wall of the shell.

Further, the shell carrying mechanism comprises a second driving piece, a first supporting plate driven by the second driving piece to horizontally move, a second air cylinder arranged on the first supporting plate, a third air cylinder driven by the second air cylinder to vertically move, a fourth air cylinder driven by the third air cylinder to rotationally move around a horizontal shaft, and a first clamping jaw driven by the fourth air cylinder to open or clamp.

Further, the oiling mechanism comprises an oiling component and a rolling brush component which are arranged above the transferring path of the shell conveying mechanism; the oiling assembly comprises a fourth driving piece, a second supporting plate, an eighth air cylinder, a third supporting plate, an oiling valve and a hairbrush plate, wherein the second supporting plate is driven by the fourth driving piece to move up and down, the eighth air cylinder is fixed on the second supporting plate, the third supporting plate is driven by the eighth air cylinder to move horizontally, and the oiling valve and the hairbrush plate are fixed on the third supporting plate; the rolling brush assembly comprises a fifth driving piece, a fourth supporting plate which is driven by the fifth driving piece to move up and down, a sixth driving piece which is fixed on the fourth supporting plate, and a sponge rolling brush which is driven by the sixth driving piece to move rotationally.

Compared with the prior art, the full-automatic press-fitting equipment has the beneficial effects that: the stator core and the shell can be ensured to be coaxially pressed, the stability and the reliability of the pressing process are improved, and the assembly efficiency and the product quality are improved. In particular, the method comprises the steps of,

(1) The fixed supporting seat of the supporting shell is provided with a movable supporting seat which moves up and down and is used for supporting the iron core; through the arrangement of the movable supporting seat, on one hand, the initial position state (comprising the central axis and the angle position) of the iron core when the iron core is put in can be accurately controlled and maintained, and an important basis is provided for preventing the skew blocking of the follow-up accurate pressing-in of the iron core;

(2) On the other hand, the whole axial support can be provided for the press-mounting process of the iron core, the axial line of the iron core is always kept in a vertical state through the first positioning block at the lower part and the second positioning block at the upper part, and the phenomenon that the iron core is crushed or the shell is crushed due to the fact that the press-mounting acting force is not collinear with the axial line of the iron core, and even the iron core and the shell are blocked is avoided, so that the product is scrapped is effectively prevented;

(3) The movable supporting seat is further provided with a rotation stopping limiting block for positioning the angle position of the iron core, the pressing mechanism is provided with a rotation stopping limiting block for preventing the shell from rotating and running, and the rotation stopping limiting block of the pressing mechanism has a vertical floating function, so that the angle position of the shell can be guided and corrected before pressing, the angle position of the shell is maintained in the pressing process, the pressing process is not influenced, and the assembly accuracy of the shell and the iron core is effectively improved.

[ description of the drawings ]

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a lower support assembly, a press-fitting mechanism, and an iron core handling mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic view of a lower support assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of an exploded view of a lower support assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a front view of a press-fitting mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic view of a part of an explosion structure of a press-fitting mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a housing handling mechanism, an oiling mechanism, and a secondary positioning mechanism according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a housing handling mechanism and a secondary positioning mechanism according to an embodiment of the present invention;

the figures represent the numbers:

100-full-automatic press-fitting equipment; 200-shell, 201-notch; 300-iron core;

the device comprises a lower supporting component, a fixed supporting seat, a 111-limiting supporting groove, a 12-movable supporting seat, a 121-base, a 122-first positioning block, a 123-first floating pressing plate, a 124-first limiting screw, a 125-second elastic piece, a 126-first riveting thimble, a 127-second rotation stopping limiting block, a 13-first cylinder, a 14-first sensor and a 15-second sensor;

the device comprises a 2-press mounting mechanism, a 21-first driving piece, a 22-movable plate, a 23-press mounting assembly, 231-mounting cylinder columns, 232-upper pressing plates, 233-second positioning blocks, 234-first rotation stopping limiting blocks, 235-sliding rails, 236-first elastic pieces, 237-second floating pressing plates, 238-second limiting screws, 239-third elastic pieces and 2310-second riveting ejector pins;

3-shell carrying mechanism, 31-second driving piece, 32-first supporting plate, 33-second cylinder, 34-third cylinder, 35-fourth cylinder, 36-first clamping jaw;

4-iron core carrying mechanism, 41-third driving piece, 42-sixth cylinder, 43-seventh cylinder, 44-second clamping jaw;

5-oiling mechanism, 51-oiling component, 511-fourth driving piece, 512-second supporting plate, 513-eighth cylinder, 514-third supporting plate, 515-oiling valve, 516-hairbrush plate, 52-rolling brush component, 521-fifth driving piece, 522-fourth supporting plate, 523-sixth driving piece, 524-sponge rolling brush;

6-secondary positioning mechanism, 61-third positioning block, 62-third rotation stopping limiting block and 63-fifth cylinder.

[ detailed description ] of the invention

Examples:

referring to fig. 1-8, the present embodiment is a fully automatic press-fitting apparatus 100, which includes a lower support assembly 1, a press-fitting mechanism 2 disposed above the lower support assembly 1, a housing conveying mechanism 3 for conveying a housing 200 onto the lower support assembly 1, an iron core conveying mechanism 4 for conveying an iron core 300 into the lower support assembly 1, and an oiling mechanism 5 for oiling the inner wall of the housing 200.

In order to ensure that the iron core 300 can be smoothly and vertically pressed into the housing 200, the lower support assembly 1 is optimally designed in this embodiment. Specifically, the lower support assembly 1 includes a fixed support seat 11, a movable support seat 12 movably disposed in the fixed support seat 11, and a first cylinder 13 driving the movable support seat 12 to move up and down. The fixed support 11 is provided with a limit support groove 111 defining the outer circumferential position of the housing 200. The movable supporting seat 12 moves up and down within the space range of the limit supporting groove 111. The movable supporting seat 12 includes a base 121 supporting a lower end surface of the iron core 300, and a first positioning block 122 protruding upward from a surface of the base 121 and positioning an inner circumferential position of a lower portion of the iron core 300. The iron core 300 is supported by the movable supporting seat 12 in an ascending manner during press fitting, and then the iron core 300 and the shell 200 are always kept in a coaxial state along with the press fitting mechanism 2 and are fed into the shell 200, so that the verticality of the axis of the iron core 300 in the press fitting process is ensured, interference blocking between the peripheral surface of the iron core 300 and the inner wall surface of the shell 200 is effectively avoided, and smooth press fitting of the iron core 300 is ensured.

Because the housing 200 is placed in the limit supporting groove 111 without any restraining force in the axial direction and the rotation direction, but the assembly of the housing 200 and the iron core 300 is required to be angularly matched, in order to prevent the housing 200 from being angularly deflected in the press-fitting process, the press-fitting mechanism 2 is optimally designed in this embodiment. Specifically, the press-fitting mechanism 2 includes a first driving member 21, a movable plate 22 driven by the first driving member 21 to move up and down, and a press-fitting assembly 23 fixed to the movable plate 22. The press-fitting assembly 23 comprises a mounting cylinder column 231 fixed on the movable plate 22, an upper pressing plate 232 arranged on the lower end face of the mounting cylinder column 231, and a second positioning block 233 protruding out of the lower surface of the upper pressing plate 232 to position the inner periphery of the upper portion of the iron core 300, wherein a first rotation stopping limiting block 234 clamped into a corresponding gap 201 on the shell 200 in the press-fitting process is movably arranged on the mounting cylinder column 231 up and down, the width of the first rotation stopping limiting block 234 is equal to that of the gap 201, and in the press-fitting process, the first rotation stopping limiting block 234 extends into the gap 201 to realize rotation stopping limiting of the shell 200.

The surface of the first rotation stopping limiting block 234 facing the iron core 300 is provided with a profiling surface attached to the surface of the iron core 300, so that the first rotation stopping limiting block can move downwards along the surface of the iron core 300 in the press-fitting process and smoothly extend into the notch 201. The first rotation stopping stoppers 234 are provided with a pair of symmetrically distributed on both sides of the mounting cylinder post 231.

The outer peripheral surface of the mounting cylinder post 231 is provided with a vertical sliding rail 235, and the first rotation stopping limiting block 234 is slidably arranged on the sliding rail 235 through a sliding block and is held in an extended state by being held downward through a first elastic member 236.

The lower support assembly 1 is further provided with a first sensor 14 for detecting the in-place of the housing 200 and a second sensor 15 for detecting the in-place of the iron core 300.

Because be provided with the magnetic sheet in the iron core 300, the magnetic sheet adopts the mode of rubber coating to insert in the accommodation groove of iron core main part, in order to prevent that the magnetic sheet from droing in the accommodation groove in the follow-up assembly process, this embodiment has still realized the function to iron core terminal surface riveting when pressure equipment iron core 300 and casing 200, is close to through two axle head faces to the iron core carry out the riveting to puncture the position of accommodation groove, and then extrudees the inner wall surface of accommodation groove inwards protrudes, forms axial spacing to the magnetic sheet, and then realizes anti-drop function. In particular, the method comprises the steps of,

the base 121 is provided with a first floating pressure plate 123 which elastically floats up and down, the first floating pressure plate 123 is arranged on the base 121 through a first limit screw 124, and the up-down floating amount of the first floating pressure plate 123 relative to the base 121 can be adjusted by adjusting the screwing depth of the first limit screw 124. A plurality of second elastic members 125 for pushing the first floating pressure plate 123 upward are disposed between the first floating pressure plate 123 and the base 121. The base 121 is provided with a plurality of first riveting ejector pins 126 corresponding to the positions of the magnetic sheets in the iron core 300 one by one, the first riveting ejector pins 126 penetrate through the first floating pressing plate 123, under the condition that the lower supporting assembly 1 has no external acting force, the first riveting ejector pins 126 are embedded in the first floating pressing plate 123, when the iron core 300 is placed on the first floating pressing plate 123 and subjected to downward extrusion acting force, the first floating pressing plate 123 is pressed close to the base 121, and meanwhile, the first riveting ejector pins 126 extend out of the surface of the first floating pressing plate 123 to rivet the bottom shaft end face of the iron core 300.

Similarly, the press-fitting mechanism 2 is also provided with a riveting function, the lower surface of the upper pressing plate 232 is provided with a second floating pressing plate 237 in a vertically floating manner, the second floating pressing plate 237 is arranged below the upper pressing plate 232 through a second limiting screw 238, and the vertical floating amount of the second floating pressing plate 237 relative to the upper pressing plate 232 can be adjusted by adjusting the screwing depth of the second limiting screw 238. A plurality of third elastic members 239 for downwardly supporting the second floating pressing plate 237 are disposed between the second floating pressing plate 237 and the upper pressing plate 232. The upper pressing plate 232 is further provided with a plurality of second riveting jacking needles 2310 corresponding to the magnetic sheet positions in the iron core 300 one by one, the second riveting jacking needles 2310 penetrate through the second floating pressing plate 237, when the pressing mechanism 2 is not subjected to axial pressure, the second riveting jacking needles 2310 are embedded into the second floating pressing plate 237, when the pressing mechanism 2 acts for pressing, the second floating pressing plate 237 presses the top shaft end face of the iron core 300, then the upper pressing plate 232 continuously descends relative to the second floating pressing plate 237, the distance between the upper pressing plate 232 and the second floating pressing plate 237 is reduced to be tightly attached to each other, and after the iron core 300 is pressed in place, the second riveting jacking needles 2310 penetrate through the second floating pressing plate 237 and penetrate into the top shaft end face of the iron core 300 to realize riveting.

In addition, in order to ensure that the assembly angle of the iron core 300 and the housing 200 is accurate, the first positioning block 122 is provided with a second rotation stopping block 127 which is matched with a groove on the inner hole wall of the iron core 300 to realize angle positioning.

The housing conveyance mechanism 3 includes a second driving member 31, a first support plate 32 driven by the second driving member 31 to move horizontally, a second cylinder 33 provided on the first support plate 32, a third cylinder 34 driven by the second cylinder 33 to move up and down, a fourth cylinder 35 driven by the third cylinder 34 to move rotationally about a horizontal axis, and a first jaw 36 driven by the fourth cylinder 35 to perform an opening or clamping movement. The cooperation of the second driving member 31 and the second air cylinder 33 mainly realizes that the shell 200 is carried from the secondary positioning mechanism 6 to the lower support assembly 1, and the third air cylinder 34 is mainly used for realizing the overturning of the shell 200. Because the shell 200 is of a thin-wall cylinder structure, to realize the positioning of the circumferential angle, only two notches 201 on the thin-wall cylinder can be relied on, therefore, a third positioning block 61 is arranged on the secondary positioning mechanism 6, a third rotation stopping limiting block 62 corresponding to the position of the notch 201 is arranged on the third positioning block 61, after the shell 200 is taken out from the feeding mechanism, the shell 200 needs to be placed on the secondary positioning mechanism 6 for angular positioning, and then the shell carrying mechanism 3 can carry the shell to the lower supporting component 1 for press mounting operation. The third positioning block 61 is also driven to move up and down by a fifth cylinder 63.

In order to ensure that the housing 200 does not deviate and rotate during press-fitting, the notch 201 on the housing 200 needs to be utilized to realize angular positioning again, and if the angular positioning structure is directly designed on the base 121, the press-fitting of the iron core 300 may be affected, so that the embodiment designs the rotation stopping limit of the housing 200 on the press-fitting mechanism 2, and cooperates with the third cylinder 34 in the housing carrying mechanism 3 to realize 180 ° turning action of the housing 200, so that the notch 201 in the housing 200 faces upwards, and the first rotation stopping limit block 234 on the press-fitting mechanism 2 is utilized to insert the notch 210 during press-fitting to realize angular positioning.

The iron core carrying mechanism 4 includes a third driving member 41, a sixth cylinder 42 driven by the third driving member 41 to perform a horizontal rectilinear motion, a seventh cylinder 43 driven by the sixth cylinder 42 to perform an up-and-down motion, and a second jaw 44 driven by the seventh cylinder 43 to perform an opening or clamping motion.

The oiling mechanism 5 includes an oiling module 51 and a rolling brush module 52 provided above the transfer path of the housing conveyance mechanism 3, and the oiling module 51 is provided opposite to the rolling brush module 52. The oil injection assembly 51 includes a fourth driving part 511, a second supporting plate 512 which is driven to move up and down by the fourth driving part 511, an eighth air cylinder 513 fixed to the second supporting plate 512, a third supporting plate 514 which is driven to move horizontally by the eighth air cylinder 513, an oil injection valve 515 fixed to the third supporting plate 514, and a brush plate 516. The roller brush assembly 52 includes a fifth driving member 521, a fourth supporting plate 522 driven by the fifth driving member 521 to move up and down, a sixth driving member 523 fixed to the fourth supporting plate 522, and a sponge roller brush 524 driven by the sixth driving member 523 to move rotationally. When the inner wall surface of the shell 200 is oiled, the shell carrying mechanism 3 clamps the shell 200 to move to the lower part of the oiling mechanism 5, the eighth air cylinder 513 drives the third supporting plate 514 to extend forwards, the oiling valve 515 injects grease with a set metering amount on the surface of the sponge rolling brush 524 in advance, meanwhile, the grease is uniformly smeared on the sponge rolling brush 524 through the brush plate 516 matched with the rotary motion of the sponge rolling brush 524, after the shell 200 is in place, the sponge rolling brush 524 stretches into the shell 200, and the grease is uniformly smeared on the inner wall surface of the shell 200 through rotation. By applying grease to the inner wall surface of the case 200, friction force during assembly of the case 200 and the core 300 can be reduced, and smoothness of press-fitting can be improved.

The working procedure of the full-automatic press-fitting device 100 in this embodiment is as follows: the shell 200 is grabbed onto the secondary positioning mechanism 6 to perform secondary positioning and return to the angular position; then the shell 200 is taken out from the secondary positioning mechanism 6 by the shell carrying mechanism 3, turned over by 180 degrees and then moved below the oiling mechanism 5, and the sponge rolling brush 524 descends and stretches into the shell 200 to oil the inner wall surface of the shell 200; then, the shell 200 is carried to the lower support assembly 1 and is placed in the limit support groove 111 of the fixed support seat 11; after the shell 200 is put in place, the movable supporting seat 12 is lifted upwards, the iron core carrying mechanism 4 clamps the iron cores 300 from the carrier of the conveying line and places the iron cores on the movable supporting seat 12, and particularly places the iron cores on the first floating pressing plate 123, and the angle positioning is realized through a pair of second rotation stopping limiting blocks 127 on the first positioning block 122; after the iron core 300 is placed in place, the press-fitting mechanism 2 starts to act, the mounting cylinder column 231 descends, and the two first rotation stopping limiting blocks 234 firstly approach the outer peripheral surface of the iron core 300 and move downwards along the outer peripheral surface of the iron core 300, and simultaneously slowly extend into the notch 201; then the second floating pressing plate 237 starts to elastically contact the top end of the iron core 300, the mounting cylinder 231 continues to descend, the iron core 300 is slowly pressed into the housing 200 through the second floating pressing plate 237, and simultaneously, the movable supporting seat 12 synchronously moves downwards; when the iron core 300 cannot continue to move downwards after being pressed in place, the first riveting jacking needle 126 and the second riveting jacking needle 2310 act on two shaft end surfaces of the iron core 300 to realize riveting, and press mounting is completed.

What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims

1. Full-automatic pressure equipment, its characterized in that: the device comprises a lower supporting component and a press-fit mechanism arranged above the lower supporting component, wherein the lower supporting component comprises a fixed supporting seat and a movable supporting seat which is arranged in the fixed supporting seat in an up-and-down movable manner; the fixed supporting seat is provided with a limiting supporting groove for limiting the peripheral position of the shell; the movable supporting seat comprises a base for supporting the lower end surface of the iron core, and a first positioning block which protrudes upwards from the surface of the base and positions the inner periphery of the lower part of the iron core; the press-fitting mechanism comprises a press-fitting component which moves up and down; the press-fit assembly comprises a mounting cylinder column, an upper pressing plate arranged on the lower end face of the mounting cylinder column and a second positioning block protruding out of the lower surface of the upper pressing plate to position the inner periphery of the upper portion of the iron core.

2. The fully automatic press-fitting apparatus as claimed in claim 1, wherein: a first rotation stopping limiting block which is inserted into a corresponding notch on the shell in the press mounting process is movably arranged on the mounting cylinder up and down; the width of the first rotation stopping limiting block is equal to that of the notch; the installation cylinder is characterized in that a vertical sliding rail is arranged on the outer peripheral surface of the installation cylinder, the first rotation stopping limiting block is arranged on the sliding rail in a sliding mode through a sliding block, and the first rotation stopping limiting block is propped downwards through a first elastic piece to keep an extending state.

3. The fully automatic press-fitting apparatus as claimed in claim 1, wherein: the base is provided with a first floating pressing plate which elastically floats up and down; the base is provided with a plurality of first riveting ejector pins which are in one-to-one correspondence with the positions of the magnetic sheets in the iron core; the first riveting thimble is embedded in the first floating pressing plate in an initial state, and extends out of the surface of the first floating pressing plate to rivet the bottom shaft end face of the iron core after the distance between the first floating pressing plate and the base is reduced.

4. A fully automatic press-fitting apparatus as claimed in claim 3, wherein: a plurality of second elastic pieces which are used for upwards propping the first floating pressing plate are arranged between the first floating pressing plate and the base.

5. A fully automatic press-fitting apparatus as claimed in claim 1 or 3, wherein: the upper pressing plate is provided with a plurality of second riveting ejector pins in one-to-one correspondence with the positions of the magnetic sheets in the iron core, the second riveting ejector pins are embedded in the second floating pressing plate in an initial state, and the second floating pressing plate and the upper pressing plate stretch out of the surface of the second floating pressing plate to rivet the top shaft end face of the iron core after the distance between the second floating pressing plate and the upper pressing plate is reduced.

6. The fully automatic press-fitting apparatus as claimed in claim 5, wherein: a plurality of third elastic pieces which downwards support the second floating pressing plate are arranged between the second floating pressing plate and the upper pressing plate.

7. The fully automatic press-fitting apparatus as claimed in claim 1, wherein: and a second rotation stopping limiting block which is matched with the groove on the inner hole wall of the iron core to realize angle positioning is arranged on the first positioning block.

8. The fully automatic press-fitting apparatus as claimed in claim 1, wherein: the device also comprises a shell conveying mechanism for conveying the shell onto the lower support assembly, an iron core conveying mechanism for conveying the iron core into the lower support assembly and an oiling mechanism for oiling the inner wall of the shell.

9. The fully automatic press-fitting apparatus as claimed in claim 8, wherein: the shell carrying mechanism comprises a second driving piece, a first supporting plate driven by the second driving piece to horizontally move, a second air cylinder arranged on the first supporting plate, a third air cylinder driven by the second air cylinder to vertically move, a fourth air cylinder driven by the third air cylinder to rotationally move around a horizontal shaft, and a first clamping jaw driven by the fourth air cylinder to perform opening or clamping movement.

10. The fully automatic press-fitting apparatus as claimed in claim 8, wherein: the oiling mechanism comprises an oiling component and a rolling brush component which are arranged above the transferring path of the shell conveying mechanism; the oiling assembly comprises a fourth driving piece, a second supporting plate, an eighth air cylinder, a third supporting plate, an oiling valve and a hairbrush plate, wherein the second supporting plate is driven by the fourth driving piece to move up and down, the eighth air cylinder is fixed on the second supporting plate, the third supporting plate is driven by the eighth air cylinder to move horizontally, and the oiling valve and the hairbrush plate are fixed on the third supporting plate; the rolling brush assembly comprises a fifth driving piece, a fourth supporting plate which is driven by the fifth driving piece to move up and down, a sixth driving piece which is fixed on the fourth supporting plate, and a sponge rolling brush which is driven by the sixth driving piece to move rotationally.