CN117260264A - Tooling assembly for processing IGBT device of photovoltaic product - Google Patents
Tooling assembly for processing IGBT device of photovoltaic product Download PDFInfo
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- CN117260264A CN117260264A CN202311214266.1A CN202311214266A CN117260264A CN 117260264 A CN117260264 A CN 117260264A CN 202311214266 A CN202311214266 A CN 202311214266A CN 117260264 A CN117260264 A CN 117260264A
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- igbt device
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- groove
- processing
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- 238000012545 processing Methods 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 19
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009979 protective mechanism Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, 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
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
-
- 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
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a tooling assembly for processing an IGBT device of a photovoltaic product, which comprises a welding tooling and a preforming tooling, wherein the welding tooling comprises a central support frame and an IGBT device body, one side of the central support frame is provided with a positioning groove, the middle part in the positioning groove is provided with a first through hole, the central support frame outside the positioning groove is provided with a limiting block, two sides of the central support frame are also provided with positioning supports, one side of each positioning support is hinged with a positioning block through a connecting shaft, one side of each central support frame is provided with a tooling bottom plate through a plurality of positioning blocks, the IGBT device body is fixed in the positioning groove through a plurality of positioning blocks, two ends of the IGBT device body are internally provided with rectangular holes, and two sides of each central support frame are also provided with positioning supports, one side of each positioning support is hinged with a positioning block through a connecting shaft, so that the positioning stability of the IGBT device body is higher, the welding efficiency is favorable, and the original screw locking tooling is abandoned.
Description
Technical Field
The invention relates to the technical field of IGBT device tools, in particular to a tool assembly for processing an IGBT device of a photovoltaic product.
Background
With the increasing problems of global energy shortage, environmental pollution and the like, the application of renewable energy sources is receiving general attention of various countries. The solar energy source is rich, has the advantages of safety, reliability, no noise, low pollution and the like, and is considered as the renewable energy source with the most development potential.
China gradually enters the solar photovoltaic industry from the beginning of the 21 st century, and an IGBT (insulated gate bipolar transistor) used by a photovoltaic product is called an insulated gate bipolar transistor, is a core device of a photovoltaic inverter and accounts for 15-20% of the value of the photovoltaic inverter.
Because IGBT device is high-power operation in the course of working, and calorific capacity is big, and the tight connection is done with the fin to the product design time, and the frock design is improper in the production process, must influence its life and heat conductivity, and then brings serious influence to photovoltaic product's normal use.
According to the statistics of the current production model, the defect caused by processing damage of the IGBT device of the photovoltaic product in the use process is as high as 5000ppm or even higher, and the IGBT damage can only be scrapped in the actual production process. Therefore, we propose a tooling assembly for processing IGBT devices of photovoltaic products.
Disclosure of Invention
The invention aims to provide a tooling assembly for processing an IGBT device of a photovoltaic product, which solves the problems that in the prior art, screws are needed to fix the tooling of the IGBT device, the positioning safety and stability are poor, and the disassembly and the use are inconvenient.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a frock subassembly of photovoltaic product IGBT device processing, includes welding frock and preforming frock, and welding frock includes central frame and IGBT device body, the constant head tank has been seted up to central frame one side, and the first through-hole has been seted up at the middle part in the constant head tank, be equipped with the stopper on the central frame in the constant head tank outside, central frame both sides still are equipped with the location support, location support one side articulates through the connecting axle has the locating piece, and central frame one side is equipped with the frock bottom plate through a plurality of locating pieces, the IGBT device body is fixed in the constant head tank through a plurality of locating pieces, rectangular hole has been seted up to IGBT device body both ends inside;
the preforming frock includes the bottom plate, the bottom plate upside is equipped with the die holder, the die holder upside is installed the upper die base through first pneumatic cylinder, the frock spacing groove has been seted up at die holder upside middle part, frock spacing groove one end upside is equipped with the cushion, upper die holder downside middle part is equipped with elasticity and presses and hold the mechanism, and elasticity presses and hold mechanism lower part elasticity slip and insert and establish the frock spacing groove one end upside that is close to the cushion, the middle part is equipped with stamping mechanism in the upper die base.
Further, the end face, close to the positioning groove, of the limiting block is arranged to be a plane, and the limiting block is fixed on one side of the central supporting frame through a first screw.
Furthermore, locating holes are formed in two ends of the locating support, and the locating holes are fixed to one side of the central support frame through second screws.
Further, the positioning block is arranged in a diamond-shaped block shape, and the length of the positioning block is twice the width of the positioning support.
Further, the second through hole is formed in the tool bottom plate, and a lower supporting rod is arranged on the outer side of the tool bottom plate through a supporting plate.
Further, four corners of one side of the central supporting frame are provided with upper supporting rods, and a plurality of upper supporting rods are vertically welded with one side of the central supporting frame.
Further, the tool limiting groove is arranged to be a rectangular groove, and the cushion block is arranged to be a rectangular block.
Further, two first pneumatic cylinders are arranged in parallel, and a PLC control cabinet is arranged on the outer side of the lower die holder.
Further, the elastic pressing mechanism comprises a groove formed in one side of the upper die holder, and a pressing block is longitudinally and elastically arranged in the groove in a sliding manner through a spring.
Furthermore, limit sliding blocks are arranged on two sides of the pressing block, limit sliding grooves are formed in the inner sides of the grooves, and the limit sliding blocks and the limit sliding grooves are arranged in a sliding mode.
Further, the stamping mechanism comprises a second hydraulic cylinder arranged in the upper die holder, and a stamping head is arranged at the lower end of the second hydraulic cylinder.
Compared with the prior art, the invention has the beneficial effects that:
1. through the new tooling design, the efficient and reliable operation of the IGBT device preforming process is realized; through new frock design, integrate dispersion formula manual welding station, utilize equipment to carry out automatic weld, get rid of the dependency to personnel's operation ability in the production process, finally realize the production of high-efficient, concentrated station.
2. According to the invention, the positioning support is further arranged on two sides of the central support frame, the positioning blocks are hinged to one side of the positioning support through the connecting shaft, and the IGBT device body is fixed in the positioning groove on one side of the central support frame through the plurality of positioning blocks, so that the positioning stability of the IGBT device body is higher, the welding efficiency is improved, the original screw locking tool is abandoned, the positioning is safe and reliable, and the disassembly and assembly are convenient and quick.
3. According to the invention, the positioning blocks are arranged into diamond blocks, and the length of each positioning block is twice the width of the positioning support or the rectangular hole, so that the outer side edge of the IGBT device body can be subjected to limit treatment by rotating the adjusting positioning blocks, and the follow-up welding processing treatment of the IGBT device body is facilitated.
4. According to the invention, the lower support rods are arranged on the outer side of the tool bottom plate through the support plates, the upper support rods are arranged at the four corners of one side of the central support frame, and the plurality of upper support rods are vertically welded with one side of the central support frame, so that the central support frame and one side of the tool bottom plate can be stably supported, and the fixed IGBT device body overturning tool welding treatment is facilitated.
5. According to the invention, the elastic pressing mechanism is arranged in the middle of the lower side of the upper die holder, the lower part of the elastic pressing mechanism is elastically inserted into the upper side of one end of the tooling limiting groove close to the cushion block in a sliding manner, so that the non-bending end of one end of the IGBT device to be processed is elastically pressed and positioned, meanwhile, the cushion block is arranged on the upper side of one end of the tooling limiting groove, the lower part of the bending part of the pin of the IGBT device to be processed can be supported, the probability of movement during bending operation is reduced, a certain stress buffering performance is realized, the precision of bending preforming is improved, two protective mechanisms are formed, and the damage to the device caused by the stress conduction part body in the bending and pin cutting processes of the device is effectively avoided.
6. According to the invention, the stamping mechanism is arranged in the middle part in the upper die holder and comprises the second hydraulic cylinder arranged in the upper die holder, the stamping head is arranged at the lower end of the second hydraulic cylinder, pins of the IGBT device to be processed are arranged on the cushion block of the tooling limiting groove, and the stamping head is driven to move downwards by the second hydraulic cylinder to stamp and bend the pins, so that the preforming efficiency is higher, and the operation is convenient and quick.
7. According to the invention, the limiting sliding blocks are arranged on two sides of the pressing block, the limiting sliding grooves are formed in the inner sides of the grooves, and the limiting sliding blocks and the limiting sliding grooves are arranged in a sliding manner, so that the two sides of the pressing block can be subjected to sliding limiting treatment, and the stability of the pressing block for pressing materials is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the structure of a center frame of the present invention;
FIG. 2 is a schematic view of a tooling bottom plate mounted on the back side of a center support frame;
FIG. 3 is a schematic view of a positioning block connection structure of the present invention;
fig. 4 is a schematic structural diagram of an IGBT device body tooling of the present invention;
FIG. 5 is a schematic structural view of the preform tooling of the present invention;
FIG. 6 is a main sectional view of the preform tooling of the present invention;
FIG. 7 is a schematic diagram of a briquette structure of the preforming tool of the present invention.
In the figure: 1. a central support frame; 2. a positioning groove; 3. a limiting block; 4. a first screw; 5. an upper support rod; 6. positioning a support; 7. a connecting shaft; 8. a positioning block; 9. a second screw; 10. a first through hole; 11. a tool bottom plate; 12. a rectangular hole; 13. a lower support rod; 14. a support plate; 15. a second through hole; 16. an IGBT device body; 17. positioning holes;
201. a bottom plate; 202. a lower die holder; 203. a tooling limit groove; 204. an upper die holder; 205. a first hydraulic cylinder; 206. a cushion block; 207. a groove; 208. briquetting; 209. limiting sliding grooves; 210. a spring; 211. an IGBT device to be processed; 212. a second hydraulic cylinder; 13. punching heads; 214. and a limit sliding block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, in an embodiment of the present invention, a tooling assembly for processing an IGBT device of a photovoltaic product includes a welding tooling and a pre-forming tooling;
the welding fixture comprises a center support frame 1 and an IGBT device body 16, wherein a positioning groove 2 is formed in one side of the center support frame 1, the positioning groove 2 is arranged into a rectangular groove, the length and width of the positioning groove 2 are slightly larger than that of the IGBT device body 16, the IGBT device body 16 is clamped and fixed in the positioning groove 2, a first through hole 10 is formed in the middle of the positioning groove 2, a limiting block 3 is arranged on the center support frame 1 in the outer side of the positioning groove 2, a plurality of limiting blocks 3 are arranged at equal intervals, positioning supports 6 are further arranged on two sides of the center support frame 1, positioning blocks 8 are hinged to one side of the positioning supports 6 through connecting shafts 7, a fixture bottom plate 11 is arranged on one side of the center support frame 1, the IGBT device body 16 is fixed in the positioning groove 2 through the plurality of positioning blocks 8, rectangular holes 12 are formed in the two ends of the IGBT device body 16, the positioning stability of the IGBT device body 16 is high, the welding efficiency is improved, the original screw locking fixture is abandoned, and the positioning fixture is safe and reliable, and the dismounting is convenient and fast.
Preferably, the end face of the limiting block 3, which is close to the positioning groove 2, is set to be a plane, and the limiting block 3 is fixed on one side of the central supporting frame 1 through the first screw 4, so that the limiting treatment is conveniently carried out on the outer side of the IGBT device body 16 clamped in the positioning groove 2, and the positioning stability of the IGBT device body 16 tool is improved.
Preferably, positioning holes 17 are formed in two ends of the positioning support 6, and the positioning holes 17 are fixed on one side of the center support frame 1 through second screws 9, so that installation and fixation treatment can be conveniently carried out.
Preferably, the positioning block 8 is set to be diamond-shaped, and the length of the positioning block 8 is twice the width of the positioning support 6 and the rectangular hole 12, so that the outer side edge of the IGBT device body 16 can be subjected to limit processing through rotating and adjusting the positioning block 8, and the follow-up welding processing of the IGBT device body 16 is facilitated.
Preferably, the second through hole 15 has been seted up to frock bottom plate 11 inside, and frock bottom plate 11 outside is equipped with down branch 13 through backup pad 14, and center frame 1 one side four corners is equipped with branch 5, and a plurality of upper branches 5 all weld with center frame 1 one side is perpendicular for can carry out firm support processing to center frame 1 and frock bottom plate 11 one side, be convenient for turn over frock welding process to IGBT device body 16 after the fixing.
The pre-forming tool comprises a bottom plate 201, a lower die holder 202 is arranged on the upper side of the bottom plate 201, an upper die holder 204 is arranged on the upper side of the lower die holder 202 through a first hydraulic cylinder 205, a tool limiting groove 203 is formed in the middle of the upper side of the lower die holder 202, a cushion block 206 is arranged on the upper side of one end of the tool limiting groove 203, an elastic pressing mechanism is arranged in the middle of the lower side of the upper die holder 204, the lower part of the elastic pressing mechanism is elastically inserted in the upper side of one end of the tool limiting groove 203 close to the cushion block 206 in a sliding manner, and a punching mechanism is arranged in the middle of the upper die holder 204; the tool limiting groove 203 is arranged as a rectangular groove, and the cushion block 206 is arranged as a rectangular block; two first hydraulic cylinders 205 are arranged in parallel, and a PLC control cabinet is arranged on the outer side of the lower die holder 202; the elastic pressing mechanism comprises a groove 207 formed on one side of the upper die holder 204, and a pressing block 208 is longitudinally and elastically arranged in the groove 207 in a sliding manner through a spring 210; limiting sliding blocks 204 are arranged on two sides of the pressing block 208, limiting sliding grooves 209 are formed in the inner sides of the grooves 207, and the limiting sliding blocks 204 and the limiting sliding grooves 209 are arranged in a sliding mode; the stamping mechanism comprises a second hydraulic cylinder 202 arranged in an upper die holder 204, and a stamping head 203 is arranged at the lower end of the second hydraulic cylinder 202.
The working principle and the using flow of the invention are as follows:
the elastic pressing mechanism is arranged in the middle of the lower side of the upper die holder 204, and the lower part of the elastic pressing mechanism is elastically inserted into the upper side of one end of the tooling limiting groove 203 close to the cushion block 206 in a sliding manner, so that the non-bending end of one end of the IGBT device 211 to be processed is elastically pressed, the moving probability during bending operation is reduced, a certain stress buffering performance is achieved, meanwhile, the cushion block 206 arranged on the upper side of one end of the tooling limiting groove 203 can support the lower part of the bending part of the pin of the IGBT device 211 to be processed, the bending preforming precision is improved, two protection mechanisms are formed, and device damage caused by the stress conduction part body in the bending and pin cutting processes of the device is effectively avoided;
through the locating support 6 that center frame 1 both sides were equipped with, locating support 6 one side articulates through connecting axle 7 has locating piece 8, and IGBT device body 16 is fixed in constant head tank 2 in center frame 1 one side through a plurality of locating pieces 8 for IGBT device body 16 positioning stability is higher, is favorable to improving welded efficiency, abandons original lock screw frock moreover, fixes a position safe and reliable, easy dismounting is swift.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a frock subassembly of photovoltaic product IGBT device processing, includes welding frock and preforming frock, welding frock includes center frame (1) and IGBT device body (16), its characterized in that: the positioning device comprises a positioning groove (2) formed in one side of a central support frame (1), a first through hole (10) formed in the middle of the positioning groove (2), limiting blocks (3) arranged on the central support frame (1) on the outer side of the positioning groove (2), positioning supports (6) arranged on two sides of the central support frame (1), positioning blocks (8) hinged to one side of the positioning supports (6) through connecting shafts (7), tool bottom plates (11) arranged on one side of the central support frame (1) through a plurality of positioning blocks (8), and an IGBT device body (16) fixed in the positioning groove (2) through the plurality of positioning blocks (8);
the preforming frock includes bottom plate (201), bottom plate (201) upside is equipped with die holder (202), die holder (204) are installed through first pneumatic cylinder (205) to die holder (202) upside, frock spacing groove (203) have been seted up at die holder (202) upside middle part, frock spacing groove (203) one end upside is equipped with cushion (206), die holder (204) downside middle part is equipped with elasticity and presses and hold the mechanism, and elasticity presses and hold mechanism lower part elasticity slip and insert and establish at the frock spacing groove (203) one end upside that is close to cushion (206), middle part is equipped with stamping mechanism in die holder (204).
2. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: the limiting block (3) is arranged to be a plane near the end face of the positioning groove (2), and the limiting block (3) is fixed on one side of the center support frame (1) through a first screw (4).
3. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: positioning holes (17) are formed in two ends of the positioning support (6), and the positioning holes (17) are fixed on one side of the center support frame (1) through second screws (9).
4. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: the positioning blocks (8) are arranged in a diamond-shaped block shape, and the length of each positioning block (8) is twice the width of the positioning support (6).
5. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: the second through hole (15) is formed in the tool bottom plate (11), and a lower supporting rod (13) is arranged on the outer side of the tool bottom plate (11) through a supporting plate (14).
6. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: and the four corners of one side of the central support frame (1) are provided with a plurality of upper support rods (5), and the upper support rods (5) are vertically welded with one side of the central support frame (1).
7. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: the tooling limiting groove (203) is arranged to be a rectangular groove, and the cushion block (206) is arranged to be a rectangular block.
8. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: two first hydraulic cylinders (205) are arranged in parallel, and a PLC control cabinet is arranged on the outer side of the lower die holder (202).
9. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: the elastic pressing mechanism comprises a groove (207) formed in one side of the upper die holder (204), and a pressing block (208) is longitudinally and elastically arranged in the groove (207) in a sliding manner through a spring (210); limiting sliding blocks (204) are arranged on two sides of the pressing block (208), limiting sliding grooves (209) are formed in the inner sides of the grooves (207), and the limiting sliding blocks (204) and the limiting sliding grooves (209) are arranged in a sliding mode.
10. The tooling assembly for processing the photovoltaic product IGBT device according to claim 1, wherein: the stamping mechanism comprises a second hydraulic cylinder (202) arranged in an upper die holder (204), and a stamping head (203) is arranged at the lower end of the second hydraulic cylinder (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311214266.1A CN117260264A (en) | 2023-09-20 | 2023-09-20 | Tooling assembly for processing IGBT device of photovoltaic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311214266.1A CN117260264A (en) | 2023-09-20 | 2023-09-20 | Tooling assembly for processing IGBT device of photovoltaic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117260264A true CN117260264A (en) | 2023-12-22 |
Family
ID=89217222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311214266.1A Pending CN117260264A (en) | 2023-09-20 | 2023-09-20 | Tooling assembly for processing IGBT device of photovoltaic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117260264A (en) |
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2023
- 2023-09-20 CN CN202311214266.1A patent/CN117260264A/en active Pending
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