CN117791984A - Manufacturing method of stator and rotor iron core by stamping self-adhesive coating material belt - Google Patents
Manufacturing method of stator and rotor iron core by stamping self-adhesive coating material belt Download PDFInfo
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- CN117791984A CN117791984A CN202410213812.8A CN202410213812A CN117791984A CN 117791984 A CN117791984 A CN 117791984A CN 202410213812 A CN202410213812 A CN 202410213812A CN 117791984 A CN117791984 A CN 117791984A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 383
- 239000011248 coating agent Substances 0.000 title claims abstract description 142
- 238000000576 coating method Methods 0.000 title claims abstract description 142
- 239000000463 material Substances 0.000 title claims abstract description 127
- 239000000853 adhesive Substances 0.000 title claims abstract description 125
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 55
- 238000004080 punching Methods 0.000 claims abstract description 98
- 238000003475 lamination Methods 0.000 claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000007731 hot pressing Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract 4
- 238000004093 laser heating Methods 0.000 claims description 79
- 239000003292 glue Substances 0.000 claims description 41
- 230000000750 progressive effect Effects 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 18
- 230000000149 penetrating effect Effects 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 10
- 230000000007 visual effect Effects 0.000 description 7
- 238000001723 curing Methods 0.000 description 6
- 239000000084 colloidal system Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 241000252254 Catostomidae Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The invention discloses a method for manufacturing a stator and rotor iron core by stamping a self-adhesive coating material belt, which comprises the following steps: s1, preparing a self-adhesive coating material belt; s2, stamping an iron core stamping piece; s3, forming an iron core: the iron core punching sheet is sequentially subjected to superposition, hot pressing and cooling to obtain an iron core product; the lamination in the iron core forming of the step S3 adopts rotary lamination; the hot pressing in the iron core forming in the step S3 is carried out on a press, and an induction heating device is arranged on the press, so that the iron core can be subjected to induction heating under the condition that the iron core after lamination is pressurized, and the self-adhesive coating film on the surface of the iron core punching sheet is melted to form viscosity; and (3) cooling in the iron core molding in the step (S3) to enable the melted self-adhesive coating film to be cooled and solidified again, and bonding and molding the iron core after lamination. The invention improves the manufacturing quality and the production efficiency of the stator and rotor iron core, and the integral bonding strength of the laminated iron core is high.
Description
Technical Field
The invention relates to the technical field of manufacturing of motor stator and rotor cores, in particular to a manufacturing method of a stator and rotor core by stamping a self-adhesive coating material belt.
Background
The motor stator and rotor iron core comprises a motor stator iron core and a motor rotor iron core, which are formed by overlapping silicon steel sheets (punching sheets). The silicon steel sheet is usually punched by a punching progressive die on a punch press. In general, an upper die plate, a lower die plate and a stripper plate positioned between the upper die plate and the lower die plate are arranged on a stamping progressive die, a plurality of male dies are arranged on the upper die plate, female dies matched with the male dies are arranged at corresponding positions of the lower die plate, so that a plurality of blanking stations are formed, during stamping, a material belt moves forwards in a stepping manner from the upper die plate to the lower die plate, through holes, tooth grooves and inner contours on a motor stator core stamping sheet are sequentially stamped through stamping dies (male dies and female dies) on each station, and finally the core stamping sheet is stamped down from the material belt through blanking male dies and blanking female dies on blanking stations. In order to realize automatic lamination of the iron core punching sheets, an automatic lamination die is arranged below a blanking female die of the stamping progressive die, main elements of the automatic lamination die are a tightening ring which is used for accommodating the iron core punching sheets and in interference fit with the iron core punching sheets, and during blanking, under the action of downward stamping force of a blanking male die, the blanked iron core punching sheets are extruded into the tightening ring one by one, so that a lamination structure of the iron core punching sheets is formed in the tightening ring. In order to ensure the compactness of the lamination of the iron core punching sheets, a lifting type iron core punching sheet jacking device for jacking the iron core punching sheets is generally arranged below the tightening ring.
In the prior art, the lamination structure of the iron core punching sheet is usually fixed by stacking and riveting. And when the iron core punching sheets are stacked, the upper and lower adjacent iron core punching sheets are combined with each other through the stacking riveting points on the upper and lower adjacent iron core punching sheets. However, due to the presence of the staking points on the core laminations, the magnetic properties of the overall core may be reduced.
For the problem of reduced magnetic performance of the iron core caused by the existence of the overlapped riveting points, the current solution is to cancel the overlapped riveting structure between iron core punching sheets and adopt a spot gluing structure. Typically, the invention patent (issued patent number CN 114785060B) filed before and issued by the company is a stamping progressive die and a dispensing process for stator and rotor iron cores of a motor adopting dispensing lamination, wherein colloid is distributed on the surface of the corresponding iron core punching sheet position on a material belt, so that adjacent iron core punching sheets are overlapped to form adhesive force, and a dispensing laminated iron core is formed. In order to improve the curing speed of the colloid, the used colloid is a double-component colloid, and the two-component colloid needs to be respectively distributed on a material belt during dispensing.
However, the manufacturing process for producing the iron core by dispensing lamination has the following defects:
Firstly, the dispensing system is complex, the system maintenance cost is high, and the production efficiency is relatively low;
secondly, a manufacturing process of producing the iron core by dispensing lamination is adopted, and the adhesive is distributed in a scattered point-shaped manner on the iron core punching sheets, so that the bonding strength between the iron core punching sheets is relatively low; and because the dispensing system is limited by the size of the dispensing head, the density of dispensing cannot be increased by a dense dispensing method, so that the overall bonding strength of the dispensing laminated iron core is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a method for manufacturing a stator and rotor iron core by stamping a self-adhesive coating material belt, which aims to overcome the defects in the prior art and improve the manufacturing quality and the production efficiency of the stator and rotor iron core. The specific technical scheme is as follows:
a method for manufacturing stator and rotor iron cores by stamping self-adhesive coating material strips comprises the following steps:
s1, preparing a self-adhesive coating material belt: preparing a material belt for manufacturing an iron core punching sheet, wherein the material belt is a self-adhesive coating material belt, at least one of the upper surface and the lower surface of the self-adhesive coating material belt is provided with a layer of self-adhesive coating film, and the self-adhesive coating film is solid at normal temperature and can be melted after being heated;
S2, stamping an iron core punching sheet: mounting a stator and rotor iron core stamping progressive die on a high-speed stamping machine, stamping the self-adhesive coating material belt on a stamping station, and blanking on a blanking station to obtain an iron core stamping sheet;
s3, forming an iron core: the iron core punching sheet is sequentially subjected to superposition, hot pressing and cooling to obtain an iron core product;
the lamination in the iron core forming of the step S3 is carried out by adopting a rotary lamination mode on the lamination station so as to offset uneven errors and uneven thickness errors of the self-adhesive coating material belt;
the hot pressing in the iron core forming of the step S3 is performed on the hot pressing station, a press is arranged on the hot pressing station, and an induction heating device is arranged on the press, so that the iron core can be subjected to induction heating under the condition that the iron core after lamination is pressurized, and the self-adhesive coating film on the surface of the iron core punching sheet is melted to form viscosity;
and (3) cooling in the iron core forming in the step (S3) to cool and solidify the melted self-adhesive coating film again, so that the laminated iron core is bonded and formed.
As one of the preferred embodiments of the arrangement of the self-adhesive coating film on the material strip, the self-adhesive coating film may be arranged only on one side of the material strip, while the self-adhesive coating film is not arranged on the other side of the material strip.
As the second preferred scheme of the self-adhesive coating film on the material belt, the self-adhesive coating films can be arranged on the two sides of the material belt at the same time so as to further enhance the bonding strength of the lamination of the iron core punching sheet.
And N presses are arranged on the hot pressing station, and the laminated iron cores are sequentially pressed and heated by the N presses and then cooled, so that the laminated iron cores are bonded and formed.
Preferably, the number of presses n=3, preferably servo presses.
According to the multi-press type hot-pressing machine, the multiple presses are arranged on the hot-pressing station, the iron cores after lamination are heated and pressurized in a number of times, the defect of too long consumed time caused by one-time heating and pressurization can be avoided, and therefore the heating and pressurization beat of the iron cores after lamination is synchronous with the stamping beat of the stator and rotor iron core stamping progressive die, and the production efficiency of iron core manufacturing is improved.
As one of the preferable schemes of the rotary lamination in the iron core forming, the rotary lamination in the iron core forming in the step S3 adopts the segmented rotary lamination to directly form an integral iron core; the lamination rotating means that a rotating angle is arranged between the upper and lower adjacent iron core punching sheets during lamination.
As a second preferred scheme of rotary lamination in the iron core forming, the rotary lamination in the iron core forming in the step S3 adopts segmented rotary lamination; the step of sectioning and rotating lamination refers to dividing an integral iron core into a plurality of sectioning iron cores; when the sectional rotation lamination is adopted, a plurality of sectional iron cores are formed through lamination of iron core punching sheets, and then the sectional iron cores are laminated to form an integral iron core; wherein, the iron core punching sheet of single sectional iron core does not rotate when coincide, and two upper and lower adjacent sectional iron cores adopt rotatory coincide when coincide.
In the invention, the stator and rotor iron core stamping progressive die is also provided with a temporary bonding point generator for generating a plurality of temporary bonding points on the surface of the iron core stamping sheet before lamination.
As one of the preferable schemes of the temporary bonding point generator, the temporary bonding point generator comprises a temporary glue station arranged after a stamping station of the stator and rotor iron core stamping progressive die and before a blanking station, and a glue dispensing device arranged on the temporary glue station and used for forming a plurality of scattered normal-temperature curing glue material points on a material belt.
Preferably, the glue of the normal-temperature solidified glue material point is a normal-temperature solidified single-component glue material, and the single-component glue material is sprayed on the material belt through local points of the glue dispensing device.
As a second preferred scheme of the temporary bonding point generator, the temporary bonding point generator comprises a temporary heating station arranged after a stamping station of the stator and rotor iron core stamping progressive die and before a blanking station, and a plurality of scattered and distributed laser heating heads which are arranged on the temporary heating station and used for temporarily heating a plurality of local points on a material belt so that self-adhesive coating films positioned on and close to the local points on the material belt are heated and melted, and the laser heating direction of the laser heating heads is directed to the surface of the iron core punching sheet.
Preferably, when the laser heating head is used as the temporary bonding point generator, a temporary heating station arranged behind the stamping station and in front of the blanking station can be omitted, and the temporary bonding point generator is directly arranged on the blanking station, specifically, a plurality of punch laser penetrating holes are arranged on the blanking punch of the blanking station, and the laser heating head is arranged at the rear part of the blanking punch and aligned with the punch laser penetrating holes on the blanking punch. Therefore, synchronous heating of local point positions on the iron core punching sheet can be realized while blanking.
When the self-adhesive coating material belt is a self-adhesive coating material belt with self-adhesive coating films arranged on two sides, the laser heating direction of the laser heating head points to the upper surface or the lower surface of the material belt, or the laser heating heads pointing to the upper surface and the lower surface of the material belt can be respectively arranged at the upper position and the lower position of the material belt.
When the self-adhesive coating material belt is provided with the self-adhesive coating films on one surface and two surfaces, the arrangement scheme of the laser heating head adopts one of the following two arrangement schemes: the laser heating direction of the laser heating head points to one surface of the material belt, on which the self-adhesive coating film is arranged, so that local direct heating of the self-adhesive coating film is realized; or the laser heating direction of the laser heating head points to one surface of the material belt, on which the self-adhesive coating film is not arranged, so that the local indirect heating of the self-adhesive coating film is realized through heat transfer when the upper and lower adjacent iron core punching sheets are overlapped up and down.
Alternatively, the laser heating heads directed to the upper and lower surfaces of the material tape may be provided at the upper and lower positions of the material tape, respectively, regardless of whether the self-adhesive coating film is provided only on one surface of the material tape or on both surfaces of the material tape.
As a further improvement of the invention: the laser heating heads are divided into N groups, each group of laser heating heads are arranged at intervals according to the same circumference, and the circumferences of the laser heating heads in different groups are coaxial with each other; the temporary heating station is further provided with a temperature controller for controlling the temperature rising temperature of the self-adhesive coating film at the local point position, the temperature controller comprises a rotary laser mask plate driven by a servo motor to rotate, a plurality of mask plate laser crossing holes arranged on the rotary laser mask plate, the mask plate laser crossing holes are divided into N groups, each group of mask plate laser crossing holes are arranged at intervals according to the same circumference, the diameter of the circumference is the same as and coaxial with the diameter of the circumference of a corresponding group of laser heating heads, and the laser heating heads are arranged at the rear position of the rotary laser mask plate.
The number of the laser penetrating holes of each group of mask plates is the same as or different from the number of the laser heating heads of the corresponding group.
Preferably, the laser heating heads can be divided into only one group and arranged on a circumferential line with a larger diameter as much as possible.
Preferably, when the laser heating head is arranged at the rear part of the blanking male die, a mask plate arranging cavity can be reserved on the iron core stamping progressive die and close to the rear part of the blanking male die, the laser mask plate is arranged in the mask plate arranging cavity, and the laser mask plate is fixed on an output shaft of the servo motor.
Preferably, the servo motor is a variable-frequency speed-regulating servo motor, the number of laser passing holes of the mask plate on the rotary laser mask plate can be optimally set, and the rotating speed of the rotary laser mask plate can be changed through the variable-frequency speed-regulating servo motor, so that the laser heating energy emitted to the material belt in the set time can be regulated, and the accurate control of the local point location heating temperature on the material belt can be realized.
The method for forming the segmented iron core in the segmented iron core tightening ring by the iron core punching sheet comprises the following steps:
(1) In the punching process of the iron core punching sheet in the step S2, a temporary bonding point generator is started, and a plurality of temporary bonding points are formed on the iron core punching sheet of the self-adhesive coating material belt through the glue spraying operation of the glue dispensing device; or the laser heating head is used for carrying out laser heating on the iron core punching sheet of the self-adhesive coating material belt, so that the self-adhesive coating films at a plurality of local points on the iron core punching sheet are melted to form a plurality of temporary bonding points;
(2) In the step S3 of iron core forming, the iron core punching sheets enter a segmented iron core tightening ring on a blanking station, the upper and lower adjacent iron core punching sheets are mutually adhered together through temporary bonding points, and a plurality of iron core punching sheets are sequentially overlapped in the segmented iron core tightening ring to form a segmented iron core.
Note that in order to prevent the upper and lower adjacent segment cores from sticking together in the continuous stamping production, the uppermost one of the segment cores is not provided with a temporary sticking point. That is, when the uppermost iron core punching sheet of the segmented iron core is punched, the dispensing device or the laser heating head needs to be closed by the control system.
The dispensing device and the laser heating head as the temporary bonding point generator are generally only provided with one of them. Of course, in order to enhance the effect of adhesion and curing, the dispensing device and the laser heating head may be simultaneously disposed. Meanwhile, when the device is arranged, the temporary heating station can be arranged behind the temporary glue station according to the stamping process, so that the glue at the glue dispensing position is uniformly melted by utilizing the laser heating effect of the laser heating head after glue dispensing, and the uniformity of the thickness of the iron core after lamination is prevented from being influenced by too many local bulges of the glue or inconsistent bulges of the glue at all positions.
In the invention, the folding station is rotatably provided with the segmented iron core tightening ring for forming the segmented iron core, and the lower part of the segmented iron core tightening ring is connected with the segmented iron core rotating folding mechanism for realizing the rotating folding of the segmented iron core.
In order to realize the mutual nesting of stator stamping and rotor stamping, a motor rotor blanking work group and a motor stator blanking work group are sequentially arranged on the iron core stamping progressive die according to the moving direction of a material belt, stamping stations, blanking stations and temporary bonding point generators are respectively arranged on the motor rotor blanking work group and the motor stator blanking work group, and segmented iron core tightening rings for forming segmented iron cores are respectively arranged below the blanking stations.
The self-adhesive coating material belt is prepared by thermally spraying a layer of self-adhesive coating film on the surface of the material belt and cooling and solidifying the self-adhesive coating film.
The beneficial effects of the invention are as follows:
firstly, the manufacturing method of the stator and rotor iron core by adopting the self-adhesive coating material belt for stamping adopts the self-adhesive coating material belt as the material belt for manufacturing the iron core, and the self-adhesive coating film on the upper surface of the material belt realizes gluing solidification after the iron core stamping sheets are overlapped, heated and cooled.
Secondly, according to the manufacturing method of the stator and rotor iron core by stamping the self-adhesive coating material belt, the self-adhesive coating material belt is used as the material belt for manufacturing the iron core, only a small number of temporary bonding points are arranged on the material belt in the stamping process so as to realize temporary bonding of iron core punching sheets, and the whole heat curing process of the iron core with long time consumption is moved backwards, so that the takt time of stamping processing can be shortened, and the stamping stacking efficiency of the stator and rotor iron core stamping progressive die is improved.
Thirdly, according to the manufacturing method of the stator and rotor iron core by adopting the self-adhesive coating material belt for stamping, a plurality of presses are arranged on the hot pressing station, so that on one hand, the iron core after lamination is heated and pressurized in a number of times, the defect of too long consumed time caused by one-time heating and pressurizing can be avoided, and on the other hand, the heating and pressurizing beat of the iron core after lamination is synchronized with the stamping beat of the stator and rotor iron core stamping progressive die, and therefore the production efficiency of iron core manufacturing is further improved.
Fourth, according to the manufacturing method of the stator and rotor iron core by adopting the self-adhesive coating material belt for stamping, the laser heating head serving as the temporary bonding point generator is directly arranged on the blanking station, so that the process flow of iron core manufacturing is further simplified, and the production efficiency of iron core manufacturing is improved.
Fifth, according to the manufacturing method of the stator and rotor iron core by adopting the self-adhesive coating material belt for stamping, the whole iron core is decomposed into a plurality of segmented iron cores, and the segmented iron cores are sequentially rotated and overlapped, so that the problem of uniformity of thickness of the whole iron core is solved.
Sixth, according to the manufacturing method of the stator and rotor iron core by stamping the self-adhesive coating material belt, the rotary laser mask plate is arranged at the front part of the laser heating head, so that laser emitted by the laser heating head can only pass through the laser passing holes on the rotary laser mask plate in a discontinuous mode to reach the surface of the iron core stamping piece of the self-adhesive coating material belt, thereby realizing discontinuous heating of local point positions on the iron core stamping piece, being beneficial to precisely controlling the heating temperature of the local positions of the iron core stamping piece, effectively preventing damage of self-adhesive coating sizing materials caused by local temperature overheating, and improving the bonding quality.
Drawings
Fig. 1 is a schematic process flow diagram of a method for manufacturing a stator and rotor core by stamping a self-adhesive coating material strip;
fig. 2 is a schematic structural view of a glue dispensing device and a laser heating head arranged on a stator and rotor iron core stamping progressive die;
Fig. 3 is a schematic structural view of a mechanism for connecting a segmented core rotary lamination to a stator and rotor core stamping progressive die;
FIG. 4 is one of the partial enlarged views of FIG. 3;
FIG. 5 is a second enlarged view of a portion of FIG. 3;
fig. 6 is a schematic view of a structure in which a mask laser penetration hole is provided on the rotary laser mask in fig. 2.
In the figure: 37. the motor rotor blanking working position group, 38, the motor stator blanking working position group, 39, the glue dispensing device, 40, the laser heating head, 41, the self-adhesive coating material belt, 42, the servo motor, 43, the rotary laser mask plate, 44, the mask plate laser penetrating hole, 45, the punch laser penetrating hole, 46 and the mask plate placing cavity.
In the figure: 1. the device comprises an iron core stamping progressive die, 2, an iron core stamping blanking station, 3, a segmented iron core tightening ring, 4, a segmented iron core sending station, 5, a segmented iron core rotating stacking station, 6, a fluorescence directional scribing device, 7, a segmented iron core automatic rotating module, 8, a press, 9, an ultraviolet lamp, 10, a visual identification camera, 11, an iron core positioning die, 12, a workbench, 13, a segmented iron core transferring manipulator, 14, an integral iron core, 15, a belt conveyor, 16, a pushing cylinder, 17, a lifting iron core stamping jacking device (servo electric push rod), 18, a jacking sucker, 19, a magnetic jacking sucker, 20, a vacuum jacking sucker, 21, a magnetic vacuum combined jacking sucker, 22, a scribing seat, 23, a lifting cylinder, 24, a fluorescent coating scribing pen, 25, a pushing block, 26, an extension arm, 27, a segmented iron core, 28, a horizontal guide rail, 29, a lifting mechanism, 30, a horizontal guide rail, 31, a rotating module, 32, a scribing seat, 33, a lifting cylinder, 34, a fluorescent coating scribing pen, 35, a disc-shaped powerful electromagnet, 36 and a rotating arm.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Fig. 1 to 6 show an embodiment of a method for manufacturing a stator and rotor core by stamping a self-adhesive coating material tape, which comprises the following steps:
s1, preparing a self-adhesive coating material belt: preparing a material belt for manufacturing an iron core punching sheet, wherein the material belt is a self-adhesive coating material belt 41, at least one of the upper surface and the lower surface of the self-adhesive coating material belt 41 is provided with a layer of self-adhesive coating film, and the self-adhesive coating film is solid at normal temperature and can be melted after being heated;
s2, stamping an iron core punching sheet: mounting the stator and rotor iron core stamping progressive die 1 on a high-speed stamping machine, stamping the self-adhesive coating material belt 41 at a stamping station, and blanking at a blanking station to obtain an iron core stamping sheet;
s3, forming an iron core: the iron core punching sheet is sequentially subjected to superposition, hot pressing and cooling to obtain an iron core product;
the lamination in the iron core forming of the step S3 is carried out by adopting a rotary lamination mode on the lamination station so as to offset uneven errors and uneven thickness errors of the self-adhesive coating material belt;
The hot pressing in the iron core forming of the step S3 is performed on the hot pressing station, a press 8 is arranged on the hot pressing station, and an induction heating device is arranged on the press 8, so that the iron core can be subjected to induction heating under the condition that the iron core after lamination is pressurized, and the self-adhesive coating film on the surface of the iron core punching sheet is melted to form viscosity;
and (3) cooling in the iron core forming in the step (S3) to cool and solidify the melted self-adhesive coating film again, so that the laminated iron core is bonded and formed.
As one of the preferred embodiments of the arrangement of the self-adhesive coating film on the material strip, the self-adhesive coating film may be arranged only on one side of the material strip, while the self-adhesive coating film is not arranged on the other side of the material strip.
As the second preferred scheme of the self-adhesive coating film on the material belt, the self-adhesive coating films can be arranged on the two sides of the material belt at the same time so as to further enhance the bonding strength of the lamination of the iron core punching sheet.
N presses 8 are arranged on the hot pressing station, and the laminated iron cores are sequentially pressed and heated by the N presses 8 and then cooled, so that the laminated iron cores are bonded and formed.
Preferably, the number n=3 of presses 8, preferably servo presses 8.
The plurality of presses 8 are arranged on the hot-pressing station, so that the iron cores after lamination are heated and pressurized in batches, the defect of excessively long time consumption caused by one-time heating and pressurization can be avoided, and the heating and pressurization beat of the iron cores after lamination is synchronous with the stamping beat of the stator and rotor iron core stamping progressive die 1, so that the production efficiency of iron core manufacturing is improved.
As one of the preferable schemes of the rotary lamination in the core forming, the rotary lamination in the core forming in the step S3 adopts the piecewise rotary lamination to directly form the integral core 14; the lamination rotating means that a rotating angle is arranged between the upper and lower adjacent iron core punching sheets during lamination.
As a second preferred scheme of rotary lamination in the iron core forming, the rotary lamination in the iron core forming in the step S3 adopts segmented rotary lamination; the step of sectioning and rotating lamination refers to that one integral iron core 14 is divided into a plurality of sectioning iron cores 27; when the segmented rotation lamination is adopted, a plurality of segmented iron cores 27 are formed through lamination of iron core punching sheets, and then the segmented iron cores 27 are laminated to form an integral iron core 14; wherein, the core punching sheet of the single segmented core 27 does not rotate during lamination, and two segmented cores 27 adjacent to each other vertically adopt rotational lamination during lamination.
In this embodiment, the stator and rotor core stamping progressive die 1 is further provided with a temporary bonding point generator for generating a plurality of temporary bonding points on the surface of the core stamping sheet before lamination.
As one of preferable schemes of the temporary bonding point generator, the temporary bonding point generator comprises a temporary glue station arranged after a stamping station of the stator and rotor iron core stamping progressive die 1 and before a blanking station, and a glue dispensing device 39 arranged on the temporary glue station and used for forming a plurality of scattered normal-temperature curing glue material points on a material belt.
Preferably, the glue of the normal temperature curing glue sites is a normal temperature curable single component glue, and is applied to the strip by local spot spraying of the glue dispensing device 39.
As a second preferred scheme of the temporary bonding point generator, the temporary bonding point generator comprises a temporary heating station arranged after a stamping station of the stator and rotor iron core stamping progressive die 1 and before a blanking station, and a plurality of scattered and distributed laser heating heads 40 which are arranged on the temporary heating station and used for temporarily heating a plurality of local points on a material belt so that self-adhesive coating films on the material belt positioned at and close to the local points are heated and melted, and the laser heating direction of the laser heating heads 40 is directed to the surface of the iron core stamping sheet.
Preferably, when the laser heating head 40 is used as the temporary bonding point generator, a temporary heating station arranged after the stamping station and before the blanking station may be omitted, and the temporary bonding point generator may be directly arranged on the blanking station 2, specifically, a plurality of punch laser penetrating holes 45 are arranged on the blanking punch of the blanking station 2, and the laser heating head 40 is arranged at the rear part of the blanking punch and aligned with the punch laser penetrating holes 45 on the blanking punch. Therefore, synchronous heating of local point positions on the iron core punching sheet can be realized while blanking.
When the self-adhesive coating material tape 41 is a self-adhesive coating material tape with self-adhesive coating films on both sides, the laser heating direction of the laser heating head 40 may be directed to the upper surface or the lower surface of the material tape, or the laser heating heads 40 may be respectively disposed at the upper and lower positions of the material tape.
When the self-adhesive coating material tape is a self-adhesive coating material tape provided with a self-adhesive coating film on only one side and both sides, the arrangement scheme of the laser heating head 40 adopts one of the following two arrangement schemes: the laser heating direction of the laser heating head 40 points to one surface of the material belt, on which the self-adhesive coating film is arranged, so as to realize local direct heating of the self-adhesive coating film; or the laser heating direction of the laser heating head 40 points to the surface of the material belt, on which the self-adhesive coating film is not arranged, so as to realize local indirect heating of the self-adhesive coating film through heat transfer when the upper and lower adjacent iron core punching sheets are overlapped.
Alternatively, the laser heating heads 40 directed to the upper and lower surfaces of the web may be provided at the upper and lower positions of the web, respectively, whether the self-adhesive coating film is provided on only one side of the web or on both sides of the web.
As a further improvement of the invention: the laser heating heads 40 are divided into N groups, each group of laser heating heads 40 are arranged at intervals according to the same circumference, and the circumferences of the laser heating heads 40 in different groups are coaxial with each other; the temporary heating station is further provided with a temperature controller for controlling the temperature rising temperature of the self-adhesive coating film at the local point position, the temperature controller comprises a rotary laser mask plate 43 driven by a servo motor 42 to rotate, a plurality of mask plate laser penetrating holes 44 arranged on the rotary laser mask plate 43, the mask plate laser penetrating holes 44 are divided into N groups, each group of mask plate laser penetrating holes 44 are arranged at intervals according to the same circumference, the diameter of the circumference is the same as and coaxial with the diameter of the circumference of the corresponding group of laser heating heads 40, and the laser heating heads 40 are arranged at the rear position of the rotary laser mask plate 43.
The number of laser penetrating holes 44 of each set of mask plates is the same as or different from the number of laser heating heads 40 of the corresponding set.
Preferably, the laser heating heads 40 may be divided into only one group and arranged as much as possible on a circumferential line of a larger diameter.
Preferably, when the laser heating head 40 is disposed at the rear part of the blanking punch, a mask plate accommodating cavity 46 may be reserved on the iron core stamping progressive die 1 at a position close to the rear part of the blanking punch, the laser mask plate 43 may be disposed in the mask plate accommodating cavity 46, and the laser mask plate 43 may be fixed on the output shaft of the servo motor 42.
Preferably, the servo motor 42 is a variable frequency speed-regulating servo motor, and the laser heating energy emitted to the material belt in a set time can be regulated by optimally setting the number of mask laser passing holes 44 on the rotary laser mask plate 43 and changing the rotating speed of the rotary laser mask plate 43 through the variable frequency speed-regulating servo motor, so that the accurate control of the local point heating temperature on the material belt is realized.
The method for forming the segmented core 27 by the core sheet in the segmented core pinch ring 3 is as follows:
(1) In the punching process of the iron core punching sheet in the step S2, a temporary bonding point generator is started, and a plurality of temporary bonding points are formed on the iron core punching sheet of the self-adhesive coating material belt 41 through the glue spraying operation of the glue dispensing device 39; or the laser heating head 40 is used for carrying out laser heating on the iron core punching sheet of the self-adhesive coating material belt 41, so that the self-adhesive coating films at a plurality of local points on the iron core punching sheet are melted to form a plurality of temporary bonding points;
(2) In the step S3 of forming the core, the core punched pieces enter the segmented core tightening ring 3 on the blanking station 2, the upper and lower adjacent core punched pieces are adhered to each other through temporary adhesive points, and the plurality of core punched pieces are sequentially overlapped in the segmented core tightening ring to form the segmented core 27.
Note that in order to prevent the upper and lower adjacent segment cores 27 from sticking together in the continuous stamping production, the uppermost one of the segment cores 27 is not provided with a temporary sticking point. I.e. when stamping the uppermost core stamping of the segmented core 27, it is necessary to shut down the dispensing device 39 or the laser heating head 40 by means of the control system.
The dispensing device 39 and the laser heating head 40 as the temporary bonding point generator are generally only one of them. Of course, the dispensing device 39 and the laser heating head 40 may be provided simultaneously for enhancing the effect of the adhesive curing. Meanwhile, when the device is arranged, the temporary heating station can be arranged behind the temporary glue station according to the stamping process, so that glue at the glue dispensing position is uniformly melted by utilizing the laser heating effect of the laser heating head 40 after glue dispensing, and the uniformity of the thickness of the iron core after lamination is prevented from being influenced by too many local bulges of the glue or inconsistent bulges of the glue at all positions.
In this embodiment, the stacking station is rotatably provided with a segment core tightening ring 3 for forming a segment core 27, and a segment core rotating stacking mechanism for realizing segment core rotating lamination is connected below the segment core tightening ring.
In this embodiment, in order to realize the mutual nesting of the stator punching and the rotor punching, a motor rotor blanking bit group 37 and a motor stator blanking bit group 38 are sequentially arranged on the iron core punching progressive die 1 according to the moving direction of the material belt, and a punching station, a blanking station 2 and a temporary bonding point generator are respectively arranged on the motor rotor blanking bit group 37 and the motor stator blanking bit group 38, and a segmented iron core tightening ring 3 for forming the segmented iron core 27 is respectively arranged below each blanking station.
The self-adhesive coating tape 41 in this embodiment is manufactured by thermally spraying a self-adhesive coating film on the surface of the tape and then cooling and solidifying the film.
In this embodiment, the segmented iron core rotating and stacking mechanism includes a segmented iron core sending station 4 disposed below the segmented iron core tightening ring 3 and used for sending the segmented iron cores 27 outwards, and a segmented iron core rotating and stacking station 5 connected to the segmented iron core sending station 4 and used for sequentially rotating a plurality of segmented iron cores 27 by a certain angle and then stacking to form an integral iron core 14; the automatic sectional iron core rotating and laminating machine comprises a sectional iron core sending station 4, a sectional iron core rotating and laminating machine 7 and a pressing machine 8, wherein the sectional iron core sending station 4 is provided with a fluorescent directional scribing device 6 which uses fluorescent coating liquid to scribe a line on the upper surface of a sectional iron core 27 to form a fluorescent coating liquid datum line, the sectional iron core rotating and laminating station 5 is provided with a sectional iron core automatic rotating module 7 which is used for operating the sectional iron core 27 to rotate by a relative angle, the pressing machine 8 is used for laminating the sectional iron cores 27 which are sequentially rotated and laminated to form an integral iron core 14, the sectional iron core sending station 4 is also provided with an ultraviolet lamp 9 and a visual identification camera 10, the sectional iron core automatic rotating module 7 and the visual identification camera 10 are respectively connected with a control system, and the control system drives the sectional iron core automatic rotating module 7 to sequentially rotate each sectional iron core 27 by a relative angle to laminate the sectional iron core 27 to form the integral iron core 14 based on the position of the fluorescent coating liquid datum line on the upper surface of the sectional iron core 27 acquired by the visual identification camera 10.
In this embodiment, the core positioning mold 11 for positioning the segmented cores 27 during stacking is disposed on the segmented core rotating and stacking station 5, the core positioning mold 11 is mounted on the workbench 12 of the press 8, and each segmented core 27 is stacked on the core positioning mold 11 after sequentially rotating for a certain angle.
Preferably, a segmented iron core transferring manipulator 13 for transferring the segmented iron core 27 from the segmented iron core sending station 4 to the segmented iron core rotating and stacking station 5 is arranged between the segmented iron core sending station 4 and the segmented iron core rotating and stacking station 5, and the segmented iron core transferring manipulator 13 is connected with the control system.
As one of the preferable schemes of the automatic rotating module of the segmented iron core in this embodiment, the automatic rotating module 7 of the segmented iron core is an index plate driven by a servo gear motor and arranged on a workbench 12 of the press 8, the iron core positioning mold 11 is installed on the index plate, the servo gear motor is connected with the control system, and the control system drives the index plate to rotate by driving the servo gear motor, so that the rotation of the angle of the segmented iron core 27 is realized.
As a second preferred scheme of the automatic rotation module for the segmented core in this embodiment, the automatic rotation module 7 for the segmented core is disposed on the manipulator 13 for transporting the segmented core, and the manipulator 13 for transporting the segmented core is configured to grasp the segmented core 27, and then the automatic rotation module 7 for the segmented core disposed on the manipulator 13 for transporting the segmented core is configured to rotate at an angle of the segmented core 27.
In this embodiment, the segmented iron core sending station 4 is provided with a belt conveyor 15 for conveying the segmented iron core 27 to the position of the segmented iron core transferring manipulator 13, and a pushing cylinder 16 for transferring the segmented iron core 27 from the lower position of the segmented iron core tightening ring 3 to the belt conveyor 15, the pushing cylinder 16 is located at one side of the discharging position of the segmented iron core 27 below the segmented iron core tightening ring 3, and the belt conveyor 15 is located at the other side of the discharging position of the segmented iron core 27 below the segmented iron core tightening ring 3.
In this embodiment, a lifting type iron core punching jacking device 17 for supporting the lowest iron core punching sheet in the segmented iron core tightening ring 3 when the iron core punching sheets are overlapped is arranged below the segmented iron core tightening ring 3; the upper end of the lifting type iron core punching sheet jacking device 17 is provided with a jacking sucker for jacking and sucking the lowest iron core punching sheet in the segmented iron core tightening ring 3; the jacking sucker is a magnetic jacking sucker or a vacuum jacking sucker, or a magnetic vacuum combined jacking sucker formed by combining the magnetic jacking sucker and the vacuum jacking sucker.
Preferably, when the magnetic vacuum combined jacking sucker is adopted, the magnetic jacking sucker in the magnetic vacuum combined jacking sucker is a disc-shaped powerful electromagnet 35, and the vacuum jacking sucker is a plurality of vacuum suckers 36 installed on the installation holes of the disc-shaped powerful electromagnet 35.
Preferably, the lifting type iron core punching jacking device 17 is a servo electric push rod, and the jacking sucker is arranged at the top end of a telescopic rod of the servo electric push rod.
Preferably, the fluorescence orientation scribing apparatus 6 includes a scribing seat 32 movably disposed on the segmented core sending station 4, a lifting cylinder 33 disposed on the scribing seat 32, and a fluorescence coating liquid scribing pen 34 disposed on a piston rod of the lifting cylinder 33.
Preferably, the pushing cylinder 16 is a dual-shaft pushing cylinder, a pushing block 25 for pushing the segmented iron core 27 is connected between front end portions of a pair of piston rods of the dual-shaft pushing cylinder, an extension arm 26 extending forward is arranged at an upper position of the pushing block 25, a scribing seat 32 of the fluorescent directional scribing device 6 is arranged at an end portion of the extension arm 26, and a distance between a fluorescent coating liquid scribing pen 34 and a front end face of the pushing block 25 is greater than an outer contour size of the segmented iron core 27.
Preferably, the segmented iron core transferring manipulator 13 includes a horizontal guide rail 28, a lifting mechanism 29 movably disposed on the horizontal guide rail 28, a horizontal rotating arm 30 disposed at the lower end of the lifting mechanism 29, and a gripper disposed at the cantilever end of the horizontal rotating arm 30 for gripping the segmented iron core 27, wherein a rotating arm rotating module 31 for realizing the rotation of the horizontal rotating arm 30 is disposed at the connection part of the lower end of the lifting mechanism 29 and the horizontal rotating arm 30, and a segmented iron core automatic rotating module 7 is disposed between the gripper and the cantilever end of the horizontal rotating arm 30.
In the invention, a positioning pin hole is punched on the core punching sheet of the segmented core 27, a positioning pin for positioning the segmented core 27 is arranged on the core positioning die 11, and the segmented core 27 is positioned on the positioning pin of the core positioning die 11 through the positioning pin hole.
Preferably, the gripper of the segmented core transferring manipulator 13 is provided with a locating pin avoiding hole, so as to ensure that the segmented core 27 is not interfered with the locating pin on the core positioning mold when being stacked on the core positioning mold 11.
A sectional iron core stacking method adopting an ultraviolet-identified sectional iron core rotating stacking mechanism comprises the following steps:
(1) Manufacturing an iron core punching sheet: the material belt for manufacturing the iron core punching sheet enters an iron core punching progressive die 1 of a high-speed punch for punching, and the iron core punching sheet is formed on an iron core punching sheet blanking station 2 of the iron core punching progressive die 1;
(2) Shaping a segmented iron core: the punched iron core punching sheets sequentially enter a segmented iron core tightening ring 3 below the iron core punching sheet blanking station 2, and a plurality of iron core punching sheets are overlapped into a segmented iron core 27 in the segmented iron core tightening ring 3; the segmented iron core 27 is fixed on a jacking sucker at the top of the lifting type iron core punching jacking device 17 after coming out from the lower part of the segmented iron core tightening ring 3;
(3) Marking by using fluorescent coating liquid: the control system drives the pushing cylinder 16 to act, so that a pushing block 25 at the front end of a piston rod of the pushing cylinder 16 moves forwards towards the segmented iron core 27, and the extension arm 26 at the upper part of the pushing block 25, the scribing seat 32 on the extension arm 26, the lifting cylinder 33 on the scribing seat 32 and the fluorescent paint scribing pen 34 on the lifting cylinder 33 are driven to synchronously move forwards; when the fluorescent coating liquid marking pen 34 moves to the position above the segmented iron core 27, the control system drives the lifting air cylinder 33 to act, so that the fluorescent coating liquid marking pen 34 descends to be in contact with the upper surface of the segmented iron core 27, the pushing block 25 on the pushing air cylinder 16 continues to move forwards, so that the fluorescent coating liquid marking pen 34 moves forwards for a certain distance, and a fluorescent coating liquid datum line is marked on the upper surface of the segmented iron core 27;
(4) And (3) transmitting by a segmented iron core: after the fluorescent coating liquid scribing is finished, the lifting cylinder 33 acts reversely to drive the fluorescent coating liquid scribing pen 34 to move upwards so as to be separated from contact with the segmented iron core 27, meanwhile, the control system loosens the jacking sucker at the top of the lifting type iron core punching jacking device 17, and the pushing block 25 at the front end of the piston rod of the pushing cylinder 16 continues to move forwards to be contacted with one side of the segmented iron core 27 until the segmented iron core 27 is pushed onto the belt conveyor 15 from the jacking sucker at the top of the lifting type iron core punching jacking device 17 and then the pushing cylinder 16 is retracted and reset, and the segmented iron core 27 entering the belt conveyor 15 is then sent to one end of the belt conveyor 15, which is close to the segmented iron core rotary stacking station 5;
(5) Identifying a fluorescent coating liquid datum line of the segmented iron core: under the irradiation of the ultraviolet lamp 9 on the segmented iron core sending station 4, the fluorescent coating datum line on the upper surface of the segmented iron core 27 emits fluorescence and is identified by the visual identification camera 10; the control system obtains the original angle position information of the segmented iron core 27 according to the fluorescent coating liquid datum line position identified by the visual identification camera 10;
(6) Transferring the segmented iron core: the control system drives the segmented iron core transferring manipulator 13 to act, and the segmented iron core transferring manipulator 13 grabs the segmented iron core 27 and transfers the segmented iron core 27 to the position right above the iron core positioning die 11;
(7) Rotating and stacking the segmented iron cores: the control system calculates the relative rotation angle of the segmented iron core 27 according to the original angle position information of the segmented iron core 27, and then drives the segmented iron core automatic rotation module 7 to rotate the segmented iron core 27 and the iron core positioning die 11 by one relative rotation angle, and the segmented iron core 27 is stacked on the iron core positioning die 11 by the segmented iron core transferring manipulator 13;
when the segmented iron core automatic rotating module 7 is arranged on the segmented iron core transferring manipulator 13, the segmented iron core 27 is grabbed by the segmented iron core transferring manipulator 13 and then the segmented iron core 27 is rotated by one relative rotation angle and then stacked on the iron core positioning die 11; when the segmented iron core automatic rotating module 7 is arranged on an index plate of a working table 12 of the press 8, the index plate drives the iron core positioning die 11 to rotate by one relative rotation angle, and the segmented iron core 27 is stacked on the iron core positioning die 11 by the segmented iron core transferring manipulator 13;
(8) Shaping of the integral iron core: by repeating the steps (1) - (7), a plurality of segmented cores 27 are stacked on the core positioning mold 11, and then the stacked integral cores 14 are formed on the core positioning mold 11 through the pressing of the press 8.
According to the manufacturing method of the stator and rotor iron core by stamping the self-adhesive coating material belt, each segmented iron core 27 does not need to rotate when iron core stamping sheets are overlapped, on one hand, the fact that the segmented iron cores 27 which are not firmly bonded are not subjected to rotation inertial displacement after being exposed from the lower part of the segmented iron core tightening ring is guaranteed, the accuracy of the overlapped positions of the iron core stamping sheets is guaranteed, and therefore the quality of iron core manufacturing is improved; on the other hand, the beat time of the rotation of the tightening ring is saved, so that the efficiency of manufacturing the iron core is improved.
According to the manufacturing method of the stator and rotor iron core by stamping the self-adhesive coating material belt, the segmented iron core rotating and stacking mechanism is arranged, the segmented iron core 27 from the segmented iron core tightening ring 3 is marked with a fluorescent coating liquid datum line on the upper surface of the segmented iron core 27 in advance through the fluorescent directional marking device 6, the segmented iron core 27 is conveyed to the segmented iron core rotating and stacking station 5 through the belt conveyor 15, then the ultraviolet lamp 9 and the visual identification camera 10 are matched with each other, the accurate position of the fluorescent coating liquid datum line on the segmented iron core 27 is rapidly identified, and then the segmented iron core 27 and the iron core positioning die 11 are rotated by a relative rotation angle through the segmented iron core automatic rotation module 7, so that the rotating and stacking accuracy of the segmented iron core 27 is improved, and the quality of the integrally stacked iron core 14 is improved.
According to the manufacturing method of the stator and rotor iron core by stamping the self-adhesive coating material belt, the sectional iron core 27 is marked with the fluorescent coating liquid datum line after coming out of the sectional iron core tightening ring 3, and the fluorescent coating liquid datum line is identified and the sectional iron core 27 is rotationally stacked after being transported to the sectional iron core rotary stacking station 5, so that the position change of the sectional iron core 27 on the belt conveyor 15 does not influence the final rotary stacking precision.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. The manufacturing method of the stator and rotor iron core by adopting the self-adhesive coating material belt for stamping is characterized by comprising the following steps of:
s1, preparing a self-adhesive coating material belt: preparing a material belt for manufacturing an iron core punching sheet, wherein the material belt is a self-adhesive coating material belt, at least one of the upper surface and the lower surface of the self-adhesive coating material belt is provided with a layer of self-adhesive coating film, and the self-adhesive coating film is solid at normal temperature and can be melted after being heated;
S2, stamping an iron core punching sheet: mounting a stator and rotor iron core stamping progressive die on a high-speed stamping machine, stamping the self-adhesive coating material belt on a stamping station, and blanking on a blanking station to obtain an iron core stamping sheet;
s3, forming an iron core: the iron core punching sheet is sequentially subjected to superposition, hot pressing and cooling to obtain an iron core product;
the lamination in the iron core forming of the step S3 is carried out by adopting a rotary lamination mode on the lamination station so as to offset uneven errors and uneven thickness errors of the self-adhesive coating material belt;
the hot pressing in the iron core forming of the step S3 is performed on the hot pressing station, a press is arranged on the hot pressing station, and an induction heating device is arranged on the press, so that the iron core can be subjected to induction heating under the condition that the iron core after lamination is pressurized, and the self-adhesive coating film on the surface of the iron core punching sheet is melted to form viscosity;
and (3) cooling in the iron core forming in the step (S3) to cool and solidify the melted self-adhesive coating film again, so that the laminated iron core is bonded and formed.
2. The method for manufacturing the stator and rotor iron core by stamping through the self-adhesive coating material belt according to claim 1, wherein the hot-pressing station is provided with N presses, and the laminated iron core is subjected to pressurizing and heating by the N presses in sequence and then is cooled, so that the laminated iron core is bonded and molded.
3. The method for manufacturing the stator and rotor core by stamping with the self-adhesive coating material tape according to claim 1, wherein the rotary lamination in the core molding of the step S3 directly forms an integral core by adopting the split rotary lamination; the lamination rotating means that a rotating angle is arranged between the upper and lower adjacent iron core punching sheets during lamination.
4. The method for manufacturing the stator and rotor core by stamping with the self-adhesive coating material tape according to claim 1, wherein the rotary lamination in the core molding of the step S3 is a segmented rotary lamination; the step of sectioning and rotating lamination refers to dividing an integral iron core into a plurality of sectioning iron cores; when the sectional rotation lamination is adopted, a plurality of sectional iron cores are formed through lamination of iron core punching sheets, and then the sectional iron cores are laminated to form an integral iron core; wherein, the iron core punching sheet of single sectional iron core does not rotate when coincide, and two upper and lower adjacent sectional iron cores adopt rotatory coincide when coincide.
5. The method for manufacturing the stator and rotor core by stamping through the self-adhesive coating material tape according to claim 1, wherein a temporary bonding point generator for generating a plurality of temporary bonding points on the surface of the core stamping sheet before lamination is further arranged on the stator and rotor core stamping progressive die.
6. The method for manufacturing the stator and rotor core by stamping the self-adhesive coating material belt according to claim 5, wherein the temporary bonding point generator comprises a temporary glue station arranged after a stamping station of the stator and rotor core stamping progressive die and before a blanking station, and a glue dispensing device arranged on the temporary glue station and used for forming a plurality of dispersed and arranged normal-temperature curing glue material points on the material belt.
7. The method for manufacturing the stator and rotor core by stamping the self-adhesive coating material belt according to claim 5, wherein the temporary bonding point generator comprises a temporary heating station arranged after a stamping station of the stator and rotor core stamping progressive die and before a blanking station, and a plurality of scattered and distributed laser heating heads which are arranged on the temporary heating station and are used for temporarily heating a plurality of local points on the material belt so as to enable the self-adhesive coating film positioned on and close to the local points on the material belt to heat and melt, and the laser heating direction of the laser heating heads is directed to the surface of the iron core stamping sheet.
8. The method for manufacturing a stator and rotor core by stamping a self-adhesive coating material tape according to claim 7, wherein when the self-adhesive coating material tape is a self-adhesive coating material tape with self-adhesive coating films arranged on only one side and the other side, the laser heating direction of the laser heating head is directed to the side of the material tape with the self-adhesive coating films so as to realize local direct heating of the self-adhesive coating films; or the laser heating direction of the laser heating head points to one surface of the material belt, on which the self-adhesive coating film is not arranged, so that the local indirect heating of the self-adhesive coating film is realized through heat transfer when the upper and lower adjacent iron core punching sheets are overlapped up and down.
9. The method for manufacturing stator and rotor cores by stamping a self-adhesive coating material tape according to claim 7, wherein a plurality of laser heating heads are divided into N groups, each group of laser heating heads are arranged at intervals according to the same circumference, and the circumferences of the laser heating heads in different groups are coaxial with each other; the temporary heating station is further provided with a temperature controller for controlling the temperature rising temperature of the self-adhesive coating film at the local point position, the temperature controller comprises a rotary laser mask plate driven by a servo motor to rotate, a plurality of mask plate laser crossing holes arranged on the rotary laser mask plate, the mask plate laser crossing holes are divided into N groups, each group of mask plate laser crossing holes are arranged at intervals according to the same circumference, the diameter of the circumference is the same as and coaxial with the diameter of the circumference of a corresponding group of laser heating heads, and the laser heating heads are arranged at the rear position of the rotary laser mask plate.
10. The method for manufacturing the stator and rotor core by stamping with the self-adhesive coating material tape according to claim 5, wherein the method for forming the segmented core by the core stamping sheet in the segmented core tightening ring is as follows:
(1) In the punching process of the iron core punching sheet in the step S2, a temporary bonding point generator is started, and a plurality of temporary bonding points are formed on the iron core punching sheet of the self-adhesive coating material belt through the glue spraying operation of the glue dispensing device; or the laser heating head is used for carrying out laser heating on the iron core punching sheet of the self-adhesive coating material belt, so that the self-adhesive coating films at a plurality of local points on the iron core punching sheet are melted to form a plurality of temporary bonding points;
(2) In the step S3 of iron core forming, the iron core punching sheets enter a segmented iron core tightening ring on a blanking station, the upper and lower adjacent iron core punching sheets are mutually adhered together through temporary bonding points, and a plurality of iron core punching sheets are sequentially overlapped in the segmented iron core tightening ring to form a segmented iron core.
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| CN202410213812.8A CN117791984B (en) | 2024-02-27 | 2024-02-27 | Manufacturing method of stator and rotor iron core by stamping self-adhesive coating material belt |
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| JP2002307636A (en) * | 2001-04-11 | 2002-10-23 | Matsushita Electric Ind Co Ltd | Method for manufacturing laminate and manufacturing device therefor |
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| CN115461969A (en) * | 2020-04-09 | 2022-12-09 | 蒂森克虏伯钢铁欧洲股份公司 | Method for producing a laminated core, laminated core and electric machine |
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| JP2002307636A (en) * | 2001-04-11 | 2002-10-23 | Matsushita Electric Ind Co Ltd | Method for manufacturing laminate and manufacturing device therefor |
| JP2007059819A (en) * | 2005-08-26 | 2007-03-08 | Kuroda Precision Ind Ltd | Manufacturing equipment for sheet metal lamination |
| JP2010274625A (en) * | 2009-06-01 | 2010-12-09 | Panasonic Corp | Method and apparatus for manufacturing laminate |
| CN106612049A (en) * | 2015-10-27 | 2017-05-03 | 株式会社港南 | Apparatus for manufacturing laminated core by heating adhesion |
| CN109940090A (en) * | 2019-04-17 | 2019-06-28 | 珠海格力精密模具有限公司 | Automatic adhesive stamping die and technique in a kind of stator-rotor iron core mould |
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