CN112935119B - Method for processing silicon steel sheet of motor - Google Patents

Method for processing silicon steel sheet of motor Download PDF

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Publication number
CN112935119B
CN112935119B CN202110091321.7A CN202110091321A CN112935119B CN 112935119 B CN112935119 B CN 112935119B CN 202110091321 A CN202110091321 A CN 202110091321A CN 112935119 B CN112935119 B CN 112935119B
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China
Prior art keywords
silicon steel
gear
plate
motor
top surface
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Expired - Fee Related
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CN202110091321.7A
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Chinese (zh)
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CN112935119A (en
Inventor
杜雪琴
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Zhejiang Xizi Aircraft Parts Co ltd
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Zhejiang Xizi Aircraft Parts Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/20Storage arrangements; Piling or unpiling
    • B21D43/22Devices for piling sheets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention relates to the technical field of metal processing, and discloses a motor silicon steel sheet processing method which comprises a bottom plate, wherein the top surface of the bottom plate is movably connected with a clamping plate, a fixing plate is fixedly arranged on the top surface of the bottom plate, the middle part of the fixing plate is movably connected with a threaded rod, a first gear is fixedly arranged on the surface of the threaded rod, a fixing shaft is fixedly arranged on the top surface of the bottom plate, and a gear ring is movably connected to the top end of the fixing shaft. According to the stacking device for machining the silicon steel sheets of the motor and the operation method of the stacking device, the gear ring drives the meshing teeth to rotate when rotating, the first gear is driven to rotate through meshing of the meshing teeth and the first gear, the first gear can drive the three clamping plates to move simultaneously through meshing with the bottom ends of the clamping plates when rotating, so that the area values among the three clamping plates can be changed, the stacking of the silicon steel sheets of different specifications can be realized, the operation is simple, and the labor intensity of operators is reduced.

Description

Method for processing motor silicon steel sheet
Technical Field
The invention relates to the technical field of metal processing, in particular to a processing method of a motor silicon steel sheet.
Background
The silicon steel sheet is a ferrosilicon soft magnetic alloy with extremely low carbon content, and the silicon content is generally 0.5-4.5%. The added silicon can improve the resistivity and the maximum magnetic conductivity of iron, reduce the coercive force, the iron core loss and the magnetic aging, is one of important components of a motor, most of the silicon steel sheets of the motor are circular, and after stamping forming, a stacking device is required to stack the silicon steel sheets, so that the next-step transportation is facilitated.
When using, the existing stacking device mostly adopts to place silicon steel sheets in a box to place stacking, but different motors are different in models, the shapes and diameter values of the used silicon steel sheets are different, when stacking the silicon steel sheets with different diameters, operators are required to replace different boxes, the operation is complex, and the labor difficulty of the operators is increased.
Disclosure of Invention
Technical problem to be solved
The invention provides a stacking device for processing motor silicon steel sheets and a processing method thereof, which have the advantages of conveniently stacking silicon steel sheets with different diameter values, being simple to operate, reducing the labor intensity of operators and solving the problems in the background technology.
(II) technical scheme
The invention provides the following technical scheme: the utility model provides a pile up neatly device is used in motor silicon steel sheet processing, includes the bottom plate, the top surface swing joint of bottom plate has splint, the top surface fixed mounting of bottom plate has the fixed plate, the middle part swing joint of fixed plate has the threaded rod, the fixed surface of threaded rod installs gear one, the top surface fixed mounting of bottom plate has the fixed axle, the top end swing joint of fixed axle has the ring gear, the top surface fixed mounting of ring gear has the meshing tooth, the top surface fixed mounting of bottom plate has motor one, the fixed cup joint of output of motor one has gear two, the top surface fixed mounting of bottom plate has the supporting shoe, the top surface fixed mounting of supporting shoe has the buffer board, the spread groove has been seted up to the side of buffer board, the inner chamber swing joint of spread groove has flexible piece, the inner chamber fixed mounting of flexible piece has the spring.
Preferably, the top surface fixed mounting of bottom plate has the installation axle, the top fixed mounting of installation axle has motor two, the output fixed mounting of motor two has the rotary rod, the bottom surface fixed mounting of rotary rod has the electro-magnet, the one end fixed mounting that the electro-magnet is close to motor two has the electrical connection terminal, the top fixed mounting of installation axle left end has the connecting plate, the top surface fixed mounting of connecting plate has the current conducting plate.
Preferably, the top surface of the bottom plate is fixedly provided with a stamping device, and the top end of the stamping device is in transmission connection with a stamping assembly.
Preferably, splint are total three, three the bottom surface of splint all is laminated with the top surface of bottom plate, and is three the bottom of splint all meshes on the surface of threaded rod.
Preferably, the first gear is located on the outer side of the three clamping plates, the bottom end of the first gear is meshed with the meshing teeth, and the rear side of the gear ring is meshed with the second gear.
Preferably, the electro-magnet is total three, three the contained angle between the electro-magnet is one hundred twenty degrees, contained angle between stamping device and the splint is one hundred twenty degrees, the left surface and the connecting plate laminating of current conducting plate.
Preferably, the electromagnet is located in the middle of the stamping assembly and the stamping device in the horizontal direction, the stamping device is located on the left side of the installation shaft, and the top surface of the stamping device is located right below the electromagnet.
A processing method of a motor silicon steel sheet comprises the following operation steps:
the first step is as follows: the stamping assembly moves downwards to perform press forming on the silicon steel sheet positioned on the top surface of the stamping device, then the motor II drives the rotating rod to rotate, the electromagnet is positioned right above the silicon steel sheet, and at the moment, the electric connection terminal fixedly installed on the electromagnet positioned right above the silicon steel sheet is contacted with the electric conduction plate, so that the electric connection plate is electrically connected, the electromagnet is electrified, and the silicon steel sheet is adsorbed on the bottom surface of the electromagnet;
the second step: the rotating rod drives the silicon steel sheets to rotate one hundred twenty degrees through the electromagnet, so that the silicon steel sheets are positioned right above the clamping plate, the electric connection terminal leaves the electric conduction plate at the moment, the electromagnet loses power supply, the silicon steel sheets lose the adsorption of the electromagnet and fall downwards into the clamping plate, the next electromagnet supplies power at the moment, the next silicon steel sheet is adsorbed, and therefore the silicon steel sheets are stacked in the clamping plate;
the third step: the motor drives the gear II to rotate, the gear II is meshed with the gear ring to drive the gear ring to rotate when rotating, the gear ring drives the meshing teeth to rotate when rotating, the meshing teeth and the meshing teeth of the gear I drive the gear I to rotate, and the gear I is meshed with the bottom ends of the clamping plates when rotating to drive the three clamping plates to move simultaneously, so that the area values among the three clamping plates can be changed, and the device can stack silicon steel sheets of different specifications;
the fourth step: after the silicon steel sheets are stacked in the clamping plates, the second motor drives the rotary rod to rotate, so that the rotary rod is separated from the upper portion of the clamping plates, the insertion arms of the forklift can be inserted into the clamping plates from the gaps between the two clamping plates, and the silicon steel sheets in the clamping plates can be taken out along with the ascending of the insertion arms.
(III) advantageous effects
The invention has the following beneficial effects:
1. according to the invention, the motor drives the gear II to rotate, the gear II is meshed with the gear ring to drive the gear ring to rotate when rotating, the gear ring drives the meshing teeth to rotate when rotating, the meshing teeth and the meshing teeth of the gear I drive the gear I to rotate, and the gear I can drive the three clamping plates to move simultaneously through meshing with the bottom ends of the clamping plates when rotating, so that the area values among the three clamping plates can be changed, the device can be used for stacking silicon steel sheets with different specifications, the operation is simple, and the labor intensity of operators is reduced.
2. According to the automatic stacking device, the rotating rod drives the silicon steel sheets to rotate one hundred twenty degrees through the electromagnet, so that the silicon steel sheets are positioned right above the clamping plate, the electric connection terminal leaves the electric conduction plate at the moment, the electromagnet loses power supply, the silicon steel sheets lose the adsorption of the electromagnet and fall downwards into the clamping plate, the next electromagnet supplies power at the moment, and the next silicon steel sheet is adsorbed, so that the silicon steel sheets are stacked in the clamping plate, the automatic receiving and stacking device can automatically receive materials and stack, and the automation degree of the device is improved.
3. According to the invention, after the silicon steel sheets are stacked in the clamping plates, the second motor drives the rotating rod to rotate, so that the rotating rod leaves the upper part of the clamping plates, the insertion arm of the forklift can be inserted into the clamping plates from the gap between the two clamping plates, the silicon steel sheets in the clamping plates can be taken out along with the ascending of the insertion arm, the operation is simple, and the stacked silicon steel sheets can be conveniently taken out.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic illustration of an explosive connection of a ring gear according to the present invention;
FIG. 3 is a schematic view of the connection of the conductive plates according to the present invention;
FIG. 4 is a schematic cross-sectional view of a structural bumper plate according to the present invention;
FIG. 5 is an enlarged schematic view of the structure A of the present invention;
FIG. 6 is an enlarged schematic view of structure B of the present invention;
fig. 7 is an enlarged view of the structure C of the present invention.
In the figure: 1. a base plate; 2. a splint; 3. a fixing plate; 4. a threaded rod; 5. a first gear; 6. a fixed shaft; 7. a ring gear; 8. meshing teeth; 9. a first motor; 10. a second gear; 11. a support block; 12. a buffer plate; 13. connecting grooves; 14. a telescopic block; 15. a spring; 16. installing a shaft; 17. a second motor; 18. rotating the rod; 19. an electromagnet; 20. a connecting plate; 21. a conductive plate; 22. a stamping device; 23. a stamping assembly; 24. and the electric terminals are connected.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a stacking device for processing motor silicon steel sheets includes a bottom plate 1, a mounting shaft 16 is fixedly mounted on a top surface of the bottom plate 1, a second motor 17 is fixedly mounted on a top end of the mounting shaft 16, a rotating rod 18 is fixedly mounted at an output end of the second motor 17, an electromagnet 19 is fixedly mounted on a bottom surface of the rotating rod 18, one end of the electromagnet 19, which is close to the second motor 17, is fixedly mounted with an electric terminal 24, the rotating rod 18 drives the silicon steel sheets to rotate one hundred twenty degrees through the electromagnet 19, so that the silicon steel sheets are positioned right above a clamping plate 2, at this time, the electric terminal 24 leaves the electric conducting plate 21, the electromagnet 19 loses power supply, the adsorption of the silicon steel sheets 19 falls down in the clamping plate 2, at this time, the next electromagnet 19 supplies power to adsorb the next silicon steel sheets, so that the silicon steel sheets are stacked in the clamping plate 2, a connecting plate 20 is fixedly mounted on a top portion of a left end of the mounting shaft 16, a top surface of the connecting plate 20 is fixedly mounted with an electric conducting plate 21, three electromagnets 19, an included angle between the three electromagnets 19 and the three electromagnets 19 is twenty degrees, the top surface of the punching device is pressed and the bottom surface of the electric conducting plate is pressed and the upper electromagnet assembly is pressed by the punching device, and the upper electromagnet assembly 22, and the punching device is pressed by the horizontal pressing assembly, and the upper electromagnet assembly, and the punching device, and the upper electromagnet assembly is pressed electric terminal assembly, and the upper assembly is pressed by the punching device, and the upper assembly 22, when the electromagnet 19 is electrified, the electromagnet 19 is ensured to be positioned right above a silicon steel sheet, the adsorption stability of the electromagnet 19 on the silicon steel sheet is ensured, the stamping device 22 is positioned on the left side of the mounting shaft 16, the top surface of the stamping device 22 is positioned right below the electromagnet 19, the top surface of the bottom plate 1 is movably connected with the clamping plates 2, the top surface of the bottom plate 1 is fixedly provided with the fixing plate 3, the clamping plates 2 are three in number, the bottom surfaces of the three clamping plates 2 are all attached to the top surface of the bottom plate 1, the bottom ends of the three clamping plates 2 are all engaged with the surface of the threaded rod 4, after the silicon steel sheets are stacked in the clamping plates 2, the motor II 17 drives the rotating rod 18 to rotate, so that the rotating rod 18 is separated from the upper side of the clamping plates 2, at the moment, the inserting arm of a forklift can be inserted into the clamping plates 2 from a gap between the two clamping plates 2, the silicon steel sheets in the clamping plates 2 can be taken out, the middle part of the fixing plate 3 is movably connected with the gear I5, the gear I5 is positioned outside the gear I5, the bottom end of the gear I5 is engaged with the gear ring 7, and the gear 7 is positioned on the top surface of the rotating shaft 7 when the rotating fixing shaft 7, the rotating shaft 7, the gear 7 is positioned on the rotating shaft, and the rotating shaft, the rotating shaft 7, and the rotating shaft 7, the rotating shaft 7 is positioned, and the rotating shaft 7 is positioned, and the rotating shaft is positioned on the rotating shaft, and the rotating shaft 7, can drive three splint 2 and remove simultaneously, thereby can change the area value between the three splint 2, thereby realizing that the device can pile up neatly the silicon steel sheet of different specifications, bottom plate 1's top surface fixed mounting has motor 9, the fixed cover of the output of motor 9 has two 10 gears, bottom plate 1's top surface fixed mounting has supporting shoe 11, the top surface fixed mounting of supporting shoe 11 has buffer plate 12, spread groove 13 has been seted up to buffer plate 12's side, spread groove 13's inner chamber swing joint has flexible piece 14, buffer plate 12's top surface is the rubber material, can cushion the silicon steel sheet when the contact of silicon steel sheet and buffer plate 12, flexible piece 14 stretches out the one end and the splint 2 contact of spread groove 13, utilize buffer plate 12 and spread groove 13 to support the silicon steel sheet, avoid the silicon steel sheet to take place crooked in splint 2, the inner chamber fixed mounting of flexible piece 14 has spring 15, when the area value grow between the three splint 2, spring 15's elasticity can drive flexible piece 14 and stretch out spread groove 13, thereby guaranteed that flexible piece 14 can contact with splint 2 all the time.
A processing method of a motor silicon steel sheet comprises the following operation steps:
the first step is as follows: the stamping assembly 23 moves downwards to press and form the silicon steel sheet on the top surface of the stamping device 22, then the second motor 17 drives the rotating rod 18 to rotate, the electromagnet 19 is located right above the silicon steel sheet, and the electric connection terminal 24 fixedly installed on the electromagnet 19 right above the silicon steel sheet is in contact with the electric conduction plate 21, so that the connection plate 20 is electrically connected, the electromagnet 19 is electrified, and the silicon steel sheet is adsorbed on the bottom surface of the electromagnet 19;
the second step is that: the rotating rod 18 drives the silicon steel sheets to rotate one hundred twenty degrees through the electromagnet 19, so that the silicon steel sheets are positioned right above the clamping plate 2, the electric connection terminal 24 leaves the electric conduction plate 21, the electromagnet 19 loses power supply, the silicon steel sheets lose the adsorption of the electromagnet 19 and fall downwards into the clamping plate 2, the next electromagnet 19 supplies power at the moment, and the next silicon steel sheet is adsorbed, so that the silicon steel sheets are stacked in the clamping plate 2;
the third step: the first motor 9 drives the second gear 10 to rotate, the second gear 10 is meshed with the gear ring 7 to drive the gear ring 7 to rotate when rotating, the gear ring 7 drives the meshing teeth 8 to rotate when rotating, the first gear 5 is driven to rotate through meshing of the meshing teeth 8 and the first gear 5, and the first gear 5 is meshed with the bottom ends of the clamping plates 2 when rotating, so that the three clamping plates 2 can be driven to move simultaneously, the area values among the three clamping plates 2 can be changed, and the silicon steel sheets of different specifications can be stacked by the aid of the stacking device;
the fourth step: after the silicon steel sheets are stacked in the clamping plates 2, the second motor 17 drives the rotating rod 18 to rotate, so that the rotating rod 18 leaves the upper portion of the clamping plates 2, the insertion arm of the forklift can be inserted into the clamping plates 2 from the gap between the two clamping plates 2, and the silicon steel sheets in the clamping plates 2 can be taken out along with the ascending of the insertion arm.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (1)

1. A motor silicon steel sheet processing method utilizes a stacking device for motor silicon steel sheet processing to complete processing, and is characterized in that: the stacking device for processing the motor silicon steel sheets comprises a bottom plate (1), wherein a clamping plate (2) is movably connected to the top surface of the bottom plate (1), a fixed plate (3) is fixedly mounted on the top surface of the bottom plate (1), a threaded rod (4) is movably connected to the middle of the fixed plate (3), a first gear (5) is fixedly mounted on the surface of the threaded rod (4), a fixed shaft (6) is fixedly mounted on the top surface of the bottom plate (1), a gear ring (7) is movably connected to the top end of the fixed shaft (6), meshing teeth (8) are fixedly mounted on the top surface of the gear ring (7), a first motor (9) is fixedly mounted on the top surface of the bottom plate (1), a second gear (10) is fixedly sleeved on the output end of the first motor (9), a supporting block (11) is fixedly mounted on the top surface of the bottom plate (1), a buffer plate (12) is fixedly mounted on the top surface of the supporting block (11), a connecting groove (13) is formed in the side surface of the buffer plate (12), an inner cavity of the connecting groove (13) is movably connected with a telescopic block (14), and a spring (15) is fixedly mounted in the inner cavity of the telescopic block (14); the electric wire winding machine is characterized in that an installation shaft (16) is fixedly installed on the top surface of the bottom plate (1), a second motor (17) is fixedly installed on the top end of the installation shaft (16), a rotary rod (18) is fixedly installed at the output end of the second motor (17), an electromagnet (19) is fixedly installed on the bottom surface of the rotary rod (18), an electric connection terminal (24) is fixedly installed at one end, close to the second motor (17), of the electromagnet (19), a connecting plate (20) is fixedly installed at the top of the left end of the installation shaft (16), and a conductive plate (21) is fixedly installed on the top surface of the connecting plate (20); a stamping device (22) is fixedly mounted on the top surface of the bottom plate (1), and the top end of the stamping device (22) is in transmission connection with a stamping assembly (23); the number of the clamping plates (2) is three, the bottom surfaces of the three clamping plates (2) are attached to the top surface of the bottom plate (1), and the bottom ends of the three clamping plates (2) are engaged on the surface of the threaded rod (4); the first gear (5) is located on the outer sides of the three clamping plates (2), the bottom end of the first gear (5) is meshed with the meshing teeth (8), and the rear side of the gear ring (7) is meshed with the second gear (10); the number of the electromagnets (19) is three, included angles among the three electromagnets (19) are one hundred twenty degrees, and the left side surface of the conductive plate (21) is attached to the connecting plate (20); the electromagnet (19) is positioned in the middle of the stamping assembly (23) and the stamping device (22) in the horizontal direction, the stamping device (22) is positioned on the left side of the mounting shaft (16), and the top surface of the stamping device (22) is positioned right below the electromagnet (19);
the processing method of the motor silicon steel sheet specifically comprises the following operation steps:
the first step is as follows: the stamping assembly (23) moves downwards to perform press forming on the silicon steel sheet on the top surface of the stamping device (22), then the second motor (17) drives the rotating rod (18) to rotate, the electromagnet (19) is located right above the silicon steel sheet, and at the moment, an electric connection terminal (24) fixedly installed on the electromagnet (19) right above the silicon steel sheet is in contact with the conductive plate (21), so that the connecting plate (20) is electrically connected, the electromagnet (19) is electrified, and the silicon steel sheet is adsorbed on the bottom surface of the electromagnet (19);
the second step is that: the rotating rod (18) drives the silicon steel sheets to rotate one hundred twenty degrees through the electromagnet (19), so that the silicon steel sheets are positioned right above the clamping plate (2), the electric connection terminal (24) is separated from the electric conduction plate (21), the electromagnet (19) loses power supply, the silicon steel sheets lose the adsorption of the electromagnet (19) and fall downwards into the clamping plate (2), the next electromagnet (19) supplies power at the moment, the next silicon steel sheet is adsorbed, and therefore the silicon steel sheets are stacked in the clamping plate (2);
the third step: the gear II (10) is driven to rotate by the motor I (9), the gear II (10) is meshed with the gear ring (7) to drive the gear ring (7) to rotate when rotating, the gear ring (7) drives the meshing teeth (8) to rotate when rotating, the gear I (5) is driven to rotate by the meshing of the meshing teeth (8) and the gear I (5), and the gear I (5) can drive the three clamping plates (2) to simultaneously move by being meshed with the bottom ends of the clamping plates (2) when rotating, so that the area values among the three clamping plates (2) can be changed, and silicon steel sheets of different specifications can be stacked by the device;
the fourth step: after silicon steel sheets are stacked in the clamping plates (2), the rotating rod (18) is driven to rotate by the motor II (17), so that the rotating rod (18) is separated from the upper portion of the clamping plates (2), the inserting arm of the forklift can be inserted into the clamping plates (2) from a gap between the two clamping plates (2), and the silicon steel sheets in the clamping plates (2) can be taken out along with the ascending of the inserting arm.
CN202110091321.7A 2021-01-22 2021-01-22 Method for processing silicon steel sheet of motor Expired - Fee Related CN112935119B (en)

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CN202110091321.7A CN112935119B (en) 2021-01-22 2021-01-22 Method for processing silicon steel sheet of motor

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CN112935119B true CN112935119B (en) 2023-01-13

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114473204B (en) * 2022-04-14 2022-06-21 常州神力电机股份有限公司 Intelligent assembling equipment and method for motor silicon steel sheet capable of being radially twisted

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Publication number Priority date Publication date Assignee Title
JP2003200229A (en) * 2001-12-27 2003-07-15 Mitsubishi Electric Corp Laminated core manufacturing method
JP2007007679A (en) * 2005-06-29 2007-01-18 Yaskawa Electric Corp Back-pressure device for laminated core, and progressive press die equipped with the same
CN209773291U (en) * 2019-01-16 2019-12-13 安瑟科技(深圳)有限公司 Vehicle-mounted GPS (Global positioning System) shell stamping part stacking equipment
CN110586741A (en) * 2019-10-24 2019-12-20 六安正辉优产机电科技有限公司 Punch forming process of motor silicon steel sheet
CN212020990U (en) * 2019-12-30 2020-11-27 苏州高通机械科技有限公司 Drilling equipment for injection molding of wheels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003200229A (en) * 2001-12-27 2003-07-15 Mitsubishi Electric Corp Laminated core manufacturing method
JP2007007679A (en) * 2005-06-29 2007-01-18 Yaskawa Electric Corp Back-pressure device for laminated core, and progressive press die equipped with the same
CN209773291U (en) * 2019-01-16 2019-12-13 安瑟科技(深圳)有限公司 Vehicle-mounted GPS (Global positioning System) shell stamping part stacking equipment
CN110586741A (en) * 2019-10-24 2019-12-20 六安正辉优产机电科技有限公司 Punch forming process of motor silicon steel sheet
CN212020990U (en) * 2019-12-30 2020-11-27 苏州高通机械科技有限公司 Drilling equipment for injection molding of wheels

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