CN218946065U - Motor punching stamping die - Google Patents
Motor punching stamping die Download PDFInfo
- Publication number
- CN218946065U CN218946065U CN202223335639.4U CN202223335639U CN218946065U CN 218946065 U CN218946065 U CN 218946065U CN 202223335639 U CN202223335639 U CN 202223335639U CN 218946065 U CN218946065 U CN 218946065U
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- Prior art keywords
- die
- groove
- punching
- motor
- connecting plates
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- 238000004080 punching Methods 0.000 title claims abstract description 110
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims description 17
- 229920001971 elastomer Polymers 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model relates to the field of stamping dies and discloses a motor punching stamping die which comprises a die base, wherein supporting columns are respectively arranged at four corners above the die base, a bottom plate is fixedly arranged above the die base, a lower die holder is arranged above the bottom plate, a positioning component is arranged on a punching area, guide columns are respectively arranged at four corners of the lower die holder, upper connecting plates are arranged above a plurality of supporting columns and the guide columns, connecting plates are arranged on a plurality of sliding sleeves, stamping cylinders are arranged on the upper connecting plates, telescopic rods of the stamping cylinders penetrate through the upper connecting plates and are fixedly connected with the connecting plates, an upper base plate is arranged at the bottom of the connecting plates, an upper die holder is arranged at the bottom of the upper base plate, a die groove is formed in the punching area, a die cutter is arranged on the upper die holder, and a stabilizing component is respectively arranged at four corners of the bottom of the upper base plate.
Description
Technical Field
The utility model relates to the technical field of stamping dies, in particular to a motor stamping die.
Background
The motor punching sheet is one of important parts in the motor, and has the main functions of magnetic conduction and coil fixing, and in the production process of the motor punching sheet, a die arranged on a press machine is used for applying pressure to a material, so that the punching sheet material is subjected to punching treatment.
Through patent retrieval finding, chinese patent with publication number CN212019068U discloses a motor punching stamping die, including box, hydraulic stem, first fixed block, slider, piston pad, guide rail, stock guide, reset spring, support, material conveying platform, bed die, buffer spring, locating part, first bolt, go up mould, second bolt, clamp plate and second fixed block, the top middle part both sides of box are provided with the hydraulic stem, and the lower extreme of hydraulic stem is provided with first fixed block, the inside both sides of box are distributed with the guide rail, and the upper end of guide rail is provided with the piston pad, the upper end of piston pad is provided with the slider.
The device moves the pressing plate through the hydraulic rod, provides power for the upper die, enables the upper die to move downwards to extrude the stamping sheet, and performs stamping treatment on the stamping sheet, but in the process of stamping the stamping sheet, when the motor stamping sheet is pressed downwards by the die cutter, the motor stamping sheet is easy to shift, so that the stamping sheet deviates from a preset stamping area, the motor stamping sheet cannot be stably placed on the lower die holder, and the stamping effect on the motor stamping sheet is affected.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects in the prior art, the utility model provides a motor punching stamping die which can effectively solve the problems in the prior art.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model discloses a motor punching stamping die which comprises a die base, wherein supporting columns are respectively arranged at four corners above the die base, a bottom plate is fixedly arranged above the die base, a lower die holder is arranged above the bottom plate, a punching area is arranged on the lower die holder, a positioning component is arranged on the punching area, guide columns are respectively arranged at four corners of the lower die holder, a plurality of supporting columns and upper connecting plates are respectively arranged above the supporting columns and the guide columns, sliding sleeves are respectively and slidably connected with the guide columns, connecting plates are respectively arranged on the sliding sleeves, a stamping cylinder is arranged on the upper connecting plates, telescopic rods of the stamping cylinders penetrate through the upper connecting plates and are fixedly connected with the connecting plates, an upper base plate is arranged at the bottom of the connecting plates, an upper die holder is arranged at the bottom of the upper base plate, a die groove is formed in the punching area, a die cutter is arranged on the upper die holder, the die groove is matched with the die cutter, and stabilizing components are respectively arranged at four corners of the bottom of the upper base plate.
Still further, the locating component includes the cell body of seting up respectively on the left and right both sides of punching district, the embedding is provided with the electro-magnet in the cell body, the surface of electro-magnet with the upper surface of die holder keeps the level.
Still further, the stabilizing component includes the upper joint groove that upper padding plate bottom set up, sliding connection has lower joint groove on the inner wall in upper joint groove, the inside in upper joint groove is provided with first spring, the other end of first spring with the inboard bottom in lower joint groove links to each other, the bottom in lower joint groove is fixed to be provided with the rubber pad.
Further, the height of the upper connecting groove is the same as that of the upper base plate, the height of the upper connecting groove is larger than that of the lower connecting groove, and the height of the stabilizing component is larger than that of the upper base plate and the upper die holder.
Furthermore, a through groove corresponding to the die groove is formed above the base, a waste groove is formed in the bottom plate, a gasket is arranged on the inner wall of the front side of the waste groove, a collecting box is connected to the waste groove in a sliding mode, and a connecting pipe is fixedly arranged in front of the collecting box.
Furthermore, a plurality of guide posts are respectively provided with a limiting ring plate, a second spring is sleeved on the outer side of each guide post, and the lower ends of the second springs are fixedly connected with the limiting ring plates.
(III) beneficial effects
Compared with the known public technology, the technical scheme provided by the utility model has the following beneficial effects:
according to the utility model, the structural arrangement of the positioning component is matched with the structural arrangement of the stabilizing component, so that the motor punching sheet is prevented from shifting when the die cutter punches the motor punching sheet, and the punching effect of the motor punching sheet is prevented from being influenced
The user can be connected with the negative fan on the connecting pipe for produce negative pressure in the waste bin, and adsorb the motor towards the piece of placing on the punching press district through die cavity and logical groove, avoid the motor towards the piece because the punching press of die knife, take place to remove, influence the punching press effect to the motor towards the piece, on the other hand can collect the waste bits that fall into at die cavity and logical groove in collecting the box, the later stage user of being convenient for collect the processing to the waste bits.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a perspective structure diagram of a connecting plate, an upper base plate and an upper die holder;
FIG. 4 is a cross-sectional view of the upper and lower attachment slots, the first spring;
fig. 5 is a schematic structural view of the base plate.
Reference numerals in the drawings represent respectively: 1. a mold base; 2. a support column; 3. a bottom plate; 4. a lower die holder; 5. a punching area; 6. a guide post; 7. a sliding sleeve; 8. an upper connecting plate; 9. a connecting plate; 10. a punching cylinder; 11. an upper backing plate; 12. an upper die holder; 13. a die cavity; 14. a die cutter; 15. a tank body; 16. an electromagnet; 17. an upper connecting groove; 18. a lower connecting groove; 19. a first spring; 20. a rubber pad; 21. a through groove; 22. a waste tank; 23. a collection box; 24. a connecting pipe; 25. a limiting ring plate; 26. and a second spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model is further described below with reference to examples.
Examples
1-5, the motor punching stamping die of the embodiment comprises a die base 1, a silica gel pad is fixedly arranged at the bottom of the die base 1, the bottom of the silica gel pad is subjected to frosting treatment, stability of the die base 1 is improved, and then the effect of stamping the motor punching by the stamping die is improved, support columns 2 are respectively arranged at four corners above the die base 1, a bottom plate 3 is fixedly arranged above the die base 1, the bottom plate 3 is made of refined steel, the die base 3 is provided with a lower die holder 4 above, an upper die holder 12 and a lower die plate 4 are made of titanium alloy steel plates, hardness is between HRC58 and HRC 62, sufficient hardness is ensured to ensure the quality of a stamping die, a punching area 5 is arranged on the lower die holder 4, rectangular motor punching pieces to be subjected to stamping treatment are arranged on the surface of the punching area 5, the motor punching pieces are made of silicon steel, a positioning component is arranged on the punching area 5 and is used for positioning and adsorbing the rectangular motor punching pieces to be subjected to stamping treatment, the motor punching pieces placed on the punching area 5 are prevented from being shifted when being subjected to stamping the motor punching pieces, a plurality of guide posts 6 are respectively arranged on the punching area 5, a plurality of guide posts 9 are respectively arranged on the sliding sleeve 8, a plurality of guide posts 9 are fixedly connected with a plurality of sliding connecting plates 9 are arranged on the sliding sleeve 8, the sliding connecting plates 9 are respectively, the sliding connecting plates 9 are fixedly arranged, and the sliding connecting plates 9 are fixedly connected with the sliding connecting plates 8 are arranged, and the sliding connecting plates 8 are arranged on the sliding connecting plates 8, and the sliding connecting plates 8 are respectively, and the sliding connecting plates 9 are arranged, and 8 are arranged, and stable connecting plates 9 are arranged, and 8, and 9 are connected, and 9 and are arranged on the connecting plates 9 and are arranged on the connecting plate and 9 and are arranged. And then make upper die holder 12 move downwards, carry out punching press processing to the motor punching sheet of placing on punching region 5, the bottom of connecting plate 9 is provided with upper backing plate 11, the bottom of upper backing plate 11 is provided with upper die holder 12, punching region 5 has seted up die cavity 13, be provided with die cutter 14 on the upper die holder 12, the looks adaptation of die cavity 13 and die cutter 14, die cutter 14 is for the stellite and makes, have better rigidity and wearability, promote die cutter 14's life, the use of die cavity 13 and die cutter 14 carries out punching press processing to the motor punching sheet. The four corners department of upper backing plate 11 bottom is provided with stable subassembly respectively for support to the rectangular motor towards piece that punching zone 5 placed and put fixedly, avoid the mould sword 14 to carry out the punching press to the motor towards the piece when, the motor towards piece aversion influences the punching press effect to the motor towards the piece.
As shown in fig. 1 and 2, the positioning assembly comprises a slot body 15 respectively arranged on the left side and the right side of the punching area 5, an electromagnet 16 is embedded and arranged in the slot body 15, the surface of the electromagnet 16 and the upper surface of the lower die holder 4 are kept horizontal, a wire hole is arranged on the lower die holder 4 and communicated with the slot body 15 and is used for conducting a lead wire on the electromagnet 16, then the electromagnet 16 is electrified, a lead wire of the electromagnet 16 is connected with an external controller, the electromagnet 16 is electrified and powered off through the connection and disconnection of the electromagnet 16, so that the electromagnet 16 is magnetized and nonmagnetic, a rectangular motor punching to be punched is placed on the punching area, the polarity of the electromagnet 16 is electrified, so that the electromagnet 16 adsorbs the motor punching, the motor punching is stably adsorbed on the punching area, the motor punching is prevented from shifting in the punching process, and the specific position of the motor punching is prevented from shifting, so that the punching effect of the motor punching is influenced.
As shown in fig. 1 and 4, the stabilizing component comprises an upper connecting groove 17 arranged at the bottom of the upper base plate 11, a lower connecting groove 18 is slidably connected on the inner wall of the upper connecting groove 17, a first spring 19 is arranged in the upper connecting groove 17, the other end of the first spring 19 is connected with the inner bottom of the lower connecting groove 18, a rubber pad 20 is fixedly arranged at the bottom of the lower connecting groove 18, the rubber pad 20 is made of nitrile rubber, the wear resistance and the ageing resistance are good, the service life of the rubber pad 20 is prolonged, an anti-slip line is arranged at the bottom of the rubber pad 20, when the punching cylinder 10 operates, the connecting plate 9 is pushed, a sliding sleeve 7 on the connecting plate 9 moves downwards on a guide rod, so that the stabilizing component on the bottom of the connecting plate 9, the upper base plate 11 and an upper die holder 12 move, the rubber pad 20 contacts with a motor punching sheet placed on the punching area 5, the die cutter 14 punches the motor punching sheet, the first spring 19 is compressed, the lower connecting groove 18 moves upwards in the upper connecting groove 17, and the lower connecting groove 18 contacts with the motor punching sheet surface when the upper base plate 11 contacts with the motor punching sheet, the motor punching sheet surface, the lower connecting groove 18 and the motor punching sheet is prevented from moving downwards, and the motor punching sheet is stably.
As shown in fig. 1, the height of the upper connecting groove 17 is the same as that of the upper base plate 11, the height of the upper connecting groove 17 is larger than that of the lower connecting groove 18, and the height of the stabilizing component is larger than that of the upper base plate 11 and the upper die holder 12, so that the motor punching is prevented from being damaged by the upper connecting groove 17 when the stabilizing component is used for supporting and fixing the motor punching.
As shown in fig. 5, a through groove 21 corresponding to the die groove 13 is formed above the base, a waste groove 22 is formed on the bottom plate 3, a gasket is arranged on the inner wall of the front side of the waste groove 22, a collecting box 23 is connected to the waste groove 22 in a sliding manner, a connecting pipe 24 is fixedly arranged on the front face of the collecting box 23, a negative fan is connected to the connecting pipe 24 by a user, so that negative pressure is generated in the waste groove 22, on one hand, motor punched pieces placed on a punching area can be adsorbed through the die groove 13 and the through groove 21, the motor punched pieces are prevented from being moved due to the punching of the die cutter 14, the punching effect on the motor punched pieces is affected, and on the other hand, the waste chips falling into the die groove 13 and the through groove 21 can be collected in the collecting box 23, so that a later user can collect the waste chips conveniently.
As shown in fig. 1, a plurality of guide posts 6 are respectively provided with a limiting ring plate 25, a second spring 26 is sleeved on the outer side of each guide post 6, the lower end of each second spring 26 is fixedly connected with the corresponding limiting ring plate 25, limiting treatment is carried out on the connecting plate 9, and further, excessive downward movement of the upper die holder 12 is avoided, and damage to the lower die holder 4 is avoided.
In the embodiment, the structural arrangement of the positioning component is matched with the structural arrangement of the stabilizing component, so that the situation that the motor punching sheet is shifted when the die cutter 14 punches the motor punching sheet to influence the punching effect of the motor punching sheet is avoided, the electromagnet 16 is powered on and powered off to enable the electromagnet 16 to be magnetic or not magnetic, the rectangular motor punching sheet to be punched is placed on a punching area, the electromagnet 16 is electrified in polarity, the electromagnet 16 is enabled to absorb the motor punching sheet to stably absorb the motor punching sheet on the punching area, the motor punching sheet is prevented from shifting in the punching process, the specific position of the motor punching sheet is shifted to influence the punching effect of the motor punching sheet, when the punching cylinder 10 is operated, the connecting plate 9 is pushed to push, the sliding sleeve 7 on the connecting plate 9 moves downwards on a guide rod, so that the stabilizing component, the upper base plate 11 and the upper die holder 12 on the bottom of the connecting plate 9 move, the rubber pad 20 contacts with the motor punching sheet placed on the punching area 5, the die cutter 14 punches the motor punching sheet, the first spring 19 compresses and deforms, the lower connecting groove 18 moves upwards in the upper connecting groove 17, when the upper base plate 11 contacts with the surface of the motor punching sheet, the lower connecting groove 18 and the rubber pad 20 extend into the upper connecting groove 17, the stable downward abutting and placing treatment on the motor punching sheet is realized, the displacement in the process of punching the motor punching sheet is avoided, a user can be connected with a negative fan on the connecting pipe 24, negative pressure is generated in the waste groove 22, the motor punching sheet placed on the punching area is adsorbed through the die groove 13 and the through groove 21, the motor punching sheet is prevented from moving due to the punching of the die cutter 14, the punching effect on the motor punching sheet is influenced, on the other hand, the scraps falling into the die grooves 13 and the through grooves 21 can be collected in the collecting box 23, so that the scraps can be conveniently collected and treated by a later user.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (6)
1. The utility model provides a motor punching stamping die, includes mould base (1), its characterized in that: support columns (2) are respectively arranged at four corners above the die base (1), a bottom plate (3) is fixedly arranged above the die base (1), a lower die holder (4) is arranged above the bottom plate (3), a punching sheet area (5) is arranged on the lower die holder (4), positioning components are arranged on the punching sheet area (5), guide columns (6) are respectively arranged at four corners of the lower die holder (4), upper connecting plates (8) are respectively arranged above the support columns (2) and the guide columns (6), a plurality of guide columns (6) are respectively connected with a sliding sleeve (7) in a sliding manner, connecting plates (9) are arranged on the sliding sleeves (7), punching cylinders (10) are arranged on the upper connecting plates (8), telescopic rods of the punching cylinders (10) penetrate through the upper connecting plates (8) and are fixedly connected with the connecting plates (9), upper base plates (11) are arranged at the bottoms of the connecting plates (11), upper die holders (12) are arranged at the bottoms of the upper base plates (11), die holders (13) are respectively connected with die grooves (14) in a matched mode, and die grooves (14) are formed in the die holders (14), the four corners of the bottom of the upper base plate (11) are respectively provided with a stabilizing component.
2. The motor punching stamping die according to claim 1, characterized in that: the positioning assembly comprises groove bodies (15) which are respectively arranged on the left side and the right side of the punching area (5), an electromagnet (16) is embedded in the groove bodies (15), and the surface of the electromagnet (16) and the upper surface of the lower die holder (4) are kept horizontal.
3. The motor punching stamping die according to claim 1, characterized in that: the stabilizing assembly comprises an upper connecting groove (17) arranged at the bottom of the upper base plate (11), a lower connecting groove (18) is slidably connected on the inner wall of the upper connecting groove (17), a first spring (19) is arranged in the upper connecting groove (17), the other end of the first spring (19) is connected with the bottom of the inner side of the lower connecting groove (18), and a rubber pad (20) is fixedly arranged at the bottom of the lower connecting groove (18).
4. A motor punching stamping die as claimed in claim 3, characterized in that: the height of the upper connecting groove (17) is the same as that of the upper base plate (11), the height of the upper connecting groove (17) is larger than that of the lower connecting groove (18), and the height of the stabilizing component is larger than that of the upper base plate (11) and the upper die holder (12).
5. The motor punching stamping die according to claim 1, characterized in that: the upper part of the base is provided with a through groove (21) corresponding to the die groove (13), the bottom plate (3) is provided with a waste groove (22), the inner wall of the front side of the waste groove (22) is provided with a gasket, the waste groove (22) is connected with a collecting box (23) in a sliding manner, and the front face of the collecting box (23) is fixedly provided with a connecting pipe (24).
6. The motor punching stamping die according to claim 1, characterized in that: a plurality of guide posts (6) are respectively provided with a limiting ring plate (25), a second spring (26) is sleeved on the outer side of each guide post (6), and the lower ends of the second springs (26) are fixedly connected with the limiting ring plates (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223335639.4U CN218946065U (en) | 2022-12-14 | 2022-12-14 | Motor punching stamping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223335639.4U CN218946065U (en) | 2022-12-14 | 2022-12-14 | Motor punching stamping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218946065U true CN218946065U (en) | 2023-05-02 |
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ID=86102194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223335639.4U Active CN218946065U (en) | 2022-12-14 | 2022-12-14 | Motor punching stamping die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218946065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117299937A (en) * | 2023-11-29 | 2023-12-29 | 佛山登奇机电技术有限公司 | Stamping device for stator and rotor punching sheet of motor |
-
2022
- 2022-12-14 CN CN202223335639.4U patent/CN218946065U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117299937A (en) * | 2023-11-29 | 2023-12-29 | 佛山登奇机电技术有限公司 | Stamping device for stator and rotor punching sheet of motor |
| CN117299937B (en) * | 2023-11-29 | 2024-03-26 | 佛山登奇机电技术有限公司 | Stamping device for stator and rotor punching sheet of motor |
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