CN221328044U - Hot press device is glued to utmost point ear - Google Patents
Hot press device is glued to utmost point ear Download PDFInfo
- Publication number
- CN221328044U CN221328044U CN202322475543.6U CN202322475543U CN221328044U CN 221328044 U CN221328044 U CN 221328044U CN 202322475543 U CN202322475543 U CN 202322475543U CN 221328044 U CN221328044 U CN 221328044U
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- CN
- China
- Prior art keywords
- heating
- copper mold
- heating copper
- hot
- die
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- 238000010438 heat treatment Methods 0.000 claims abstract description 157
- 238000007731 hot pressing Methods 0.000 claims abstract description 36
- 239000000853 adhesive Substances 0.000 claims abstract description 30
- 230000001070 adhesive effect Effects 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 172
- 229910052802 copper Inorganic materials 0.000 claims description 172
- 239000010949 copper Substances 0.000 claims description 172
- -1 polytetrafluoroethylene Polymers 0.000 claims description 40
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 40
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 40
- 239000000523 sample Substances 0.000 claims description 30
- 239000003292 glue Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
In order to overcome the problems of high time consumption and low efficiency in the existing tab adhesive hot-pressing process, the utility model provides a tab adhesive hot-pressing device, which comprises a positioning die, a clamping device and a hot-pressing device, wherein the positioning die is positioned on one side of the hot-pressing device, the clamping device is displaceably arranged on the other side of the hot-pressing device, the clamping device is used for clamping and moving one end of a tab attached with tab adhesive onto the hot-pressing device, the positioning die is used for temporarily fixing the other end of the tab, the positioning die is provided with a first heating device, and the clamping device is provided with a second heating device. The tab adhesive hot-pressing device provided by the utility model effectively shortens the hot-pressing heating time and improves the production efficiency.
Description
Technical Field
The utility model belongs to the technical field of battery tab production equipment, and particularly relates to a tab adhesive hot-pressing device.
Background
As shown in fig. 1, the conventional structure of the tab of the conventional soft-pack battery comprises a tab 1 made of metal and two tab adhesives 2 attached to the upper and lower surfaces of the tab 1, wherein both ends of the upper tab adhesive 2 and both ends of the lower tab adhesive 2 extend out of the edges of the tab 1, the middle parts of the upper tab adhesive 2 and the lower tab adhesive 2 are respectively attached to the surface of the tab 1 by hot pressing, and both ends of the upper tab adhesive 2 and both ends of the lower tab adhesive 2 are respectively bonded together by hot pressing, so that the structure shown in fig. 2 is obtained.
Disclosure of utility model
Aiming at the problems of high time consumption and low efficiency of the existing tab adhesive hot-pressing process, the utility model provides a tab adhesive hot-pressing device.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
The utility model provides a tab glue hot-pressing device which comprises a positioning die, a clamping device and a hot-pressing device, wherein the positioning die is positioned on one side of the hot-pressing device, the clamping device is arranged on the other side of the hot-pressing device in a displaceable manner, the clamping device is used for clamping and moving one end of a tab attached with tab glue onto the hot-pressing device, the positioning die is used for temporarily fixing the other end of the tab, the positioning die is provided with a first heating device, and the clamping device is provided with a second heating device.
Optionally, the positioning die comprises a first cylinder and a first heating device, the first heating device comprises a first heating copper die and a second heating copper die, the first heating copper die can be close to or far away from the second heating copper die, and the first cylinder is connected with the first heating copper die.
Optionally, a first polytetrafluoroethylene layer is disposed on a surface of the first heating copper mold facing the second heating copper mold, and a second polytetrafluoroethylene layer is disposed on a surface of the second heating copper mold facing the first heating copper mold.
Optionally, a first temperature sensing probe is arranged in the first heating copper mold, and a second temperature sensing probe is arranged in the second heating copper mold.
Optionally, the clamping device includes the second cylinder with the second heating device, the second heating device includes the third copper mold that generates heat and fourth copper mold that generates heat, the third copper mold that generates heat with the fourth copper mold that generates heat is connected the second cylinder, by the second cylinder drives the third copper mold that generates heat with the fourth copper mold that generates heat is close to each other or is kept away from each other.
Optionally, a third polytetrafluoroethylene layer is disposed on a surface of the third heating copper mold facing the fourth heating copper mold, and a fourth polytetrafluoroethylene layer is disposed on a surface of the fourth heating copper mold facing the third heating copper mold.
Optionally, a third temperature sensing probe is arranged in the third heating copper mold, and a fourth temperature sensing probe is arranged in the fourth heating copper mold.
Optionally, the clamping device further comprises a guide rail and a travelling mechanism, the travelling mechanism is displaceably arranged on the guide rail, and the second cylinder is arranged on the travelling mechanism.
Optionally, the hot press device includes a fifth heating copper mold, a sixth heating copper mold and a third cylinder, wherein the fifth heating copper mold can be close to or far away from the sixth heating copper mold, and the third cylinder is connected with the fifth heating copper mold.
Optionally, a fifth polytetrafluoroethylene layer is disposed on a surface of the fifth heating copper mold facing the sixth heating copper mold, a sixth polytetrafluoroethylene layer is disposed on a surface of the sixth heating copper mold facing the fifth heating copper mold, a fifth temperature sensing probe is disposed in the fifth heating copper mold, and a sixth temperature sensing probe is disposed in the sixth heating copper mold.
According to the tab glue hot-pressing device provided by the invention, besides the hot-pressing device for hot-pressing the tab glue, the locating die and the clamping device for fixing the two ends of the tab are further arranged, wherein the clamping device is used for clamping the tab which is subjected to glue pasting at the last station to the locating die and the hot-pressing device, the clamping device is provided with the second heating device, the tab can be preheated through the second heating device in the process of converting at different stations, the locating die is provided with the first heating device, the first heating device and the second heating device can directly heat the two ends of the tab, the tab is made of metal materials, the higher thermal conductivity can be realized, the preheating of the tab can be realized faster, the heat transfer efficiency is improved, the hot-pressing device in the middle part of the tab can determine whether to heat according to the requirements of each procedure, the tab glue can be melted after the tab is heated to a certain temperature, thereby completing the attachment process, the heating time is effectively shortened, and the production efficiency is improved.
Drawings
FIG. 1 is an exploded view of a conventional tab and tab adhesive;
FIG. 2 is an assembled view of a conventional tab and tab adhesive;
Fig. 3 is a schematic structural view of the tab adhesive hot pressing device provided by the utility model;
reference numerals in the drawings of the specification are as follows:
1. A tab; 2. tab glue; 3. positioning a die; 31. a first heating device; 311. a first heat generating copper mold; 312. a second heating copper mold; 313. a first polytetrafluoroethylene layer; 314. a second polytetrafluoroethylene layer; 32. a first cylinder; 4. a clamping device; 41. a second heating device; 411. a third heating copper mold; 412. a fourth heating copper mold; 413. a third polytetrafluoroethylene layer; 414. a fourth polytetrafluoroethylene layer; 42. a second cylinder; 43. a walking mechanism; 44. a guide rail; 5. a hot press device; 51. a fifth heat-generating copper mold; 52. a sixth heat-generating copper mold; 53. a fifth polytetrafluoroethylene layer; 54. a sixth polytetrafluoroethylene layer; 55. and a third cylinder.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 3, an embodiment of the present utility model provides a hot press device for tab glue, including a positioning die 3, a clamping device 4 and a hot press device 5, where the positioning die 3 is located at one side of the hot press device 5, the clamping device 4 is displaceably disposed at the other side of the hot press device 5, the clamping device 4 is used for clamping and moving one end of a tab 1 attached with the tab glue 2 onto the hot press device 5, the positioning die 3 is used for temporarily fixing the other end of the tab 1, the positioning die 3 is provided with a first heating device 31, and the clamping device 4 is provided with a second heating device 41.
The pole ear glue hot press device is provided with a positioning die 3 and a clamping device 4 for fixing two ends of the pole ear 1, wherein the clamping device 4 is used for clamping the pole ear 1 which is subjected to glue pasting at the last station to the positioning die 3 and the hot press device 5, the clamping device 4 is provided with a second heating device 41, the pole ear 1 can be preheated through the second heating device 41 in the process of switching between different stations, the positioning die 3 is provided with a first heating device 31, the first heating device 31 and the second heating device 41 can directly heat the two ends of the pole ear 1, the pole ear 1 is made of metal materials, the high thermal conductivity is realized, the preheating of the pole ear 1 can be realized relatively quickly, the heat transfer efficiency is improved, the hot press device 5 at the middle part of the pole ear 1 can determine whether to heat according to the requirements of each procedure, after the pole ear 1 is heated to a certain temperature, the pole ear glue 2 can be melted so as to complete the adhesion process, the hot press heating time is effectively shortened, and the production efficiency is improved.
In an embodiment, the positioning mold 3 includes a first cylinder 32 and the first heating device 31, the first heating device 31 includes a first heat-generating copper mold 311 and a second heat-generating copper mold 312, the first heat-generating copper mold 311 may be disposed close to or far from the second heat-generating copper mold 312, and the first cylinder 32 is connected to the first heat-generating copper mold 311.
The first heating copper die 311 and the second heating copper die 312 have the advantages of rapid temperature rise and high heat conduction efficiency, and the first heating copper die 311 and the second heating copper die 312 are connected with corresponding heating circuits for controlling heating and stopping heating of the first heating copper die 311 and the second heating copper die 312.
Specifically, the first heat-generating copper mold 311 is disposed above the second heat-generating copper mold 312 in a liftable manner, the first cylinder 32 is disposed above the first heat-generating copper mold 311, and the first cylinder 32 drives the first heat-generating copper mold 311 to lift.
In an embodiment, a first polytetrafluoroethylene layer 313 is disposed on a surface of the first heat-generating copper mold 311 facing the second heat-generating copper mold 312, and a second polytetrafluoroethylene layer 314 is disposed on a surface of the second heat-generating copper mold 312 facing the first heat-generating copper mold 311.
The first polytetrafluoroethylene layer 313 and the second polytetrafluoroethylene layer 314 have non-stick properties, and by providing the first polytetrafluoroethylene layer 313 and the second polytetrafluoroethylene layer 314 on the first heat-generating copper mold 311 and the second heat-generating copper mold 312, the adhesion of the first heat-generating copper mold 311 and the second heat-generating copper mold 312 to the tab 1 itself can be prevented from affecting the transfer and fixation of the tab 1.
In one embodiment, a first layer of silicone is disposed between the first heated copper mold 311 and the first polytetrafluoroethylene layer 313, and/or
A second layer of silicone is disposed between the second heat generating copper mold 312 and the second polytetrafluoroethylene layer 314.
The first heating copper die 311 and the second heating copper die 312 can be in flexible contact with the tab 1 through the first silica gel layer and the second silica gel layer, and influences such as scratching on the surface of the tab 1 in the clamping process are avoided.
In an embodiment, a first temperature sensing probe is disposed in the first heat generating copper mold 311, and a second temperature sensing probe is disposed in the second heat generating copper mold 312.
The first temperature sensing probe is used for monitoring the heating temperature of the first heating copper mold 311, and the second temperature sensing probe is used for monitoring the heating temperature of the second heating copper mold 312, so that the electric connection and disconnection of the first heating copper mold 311 and the second heating copper mold 312 are controlled by the heating temperatures detected by the first temperature sensing probe and the second temperature sensing probe, and the temperatures of the first heating copper mold 311 and the second heating copper mold 312 are maintained within a preset temperature range.
In an embodiment, the clamping device 4 includes a second air cylinder 42 and the second heating device 41, the second heating device 41 includes a third heating copper mold 411 and a fourth heating copper mold 412, the third heating copper mold 411 and the fourth heating copper mold 412 are connected to the second air cylinder 42, and the second air cylinder 42 drives the third heating copper mold 411 and the fourth heating copper mold 412 to be close to each other or far from each other.
The third heating copper mold 411 and the fourth heating copper mold 412 have the advantages of rapid temperature rise and high heat conduction efficiency, and correspondingly, the third heating copper mold 411 and the fourth heating copper mold 412 are connected with corresponding heating circuits for controlling heating and stopping heating of the third heating copper mold 411 and the fourth heating copper mold 412.
In an embodiment, a third polytetrafluoroethylene layer 413 is disposed on a surface of the third heat-generating copper mold 411 facing the fourth heat-generating copper mold 412, and a fourth polytetrafluoroethylene layer 414 is disposed on a surface of the fourth heat-generating copper mold 412 facing the third heat-generating copper mold 411.
The third polytetrafluoroethylene layer 413 and the fourth polytetrafluoroethylene layer 414 have non-stick properties, and by disposing the third polytetrafluoroethylene layer 413 and the fourth polytetrafluoroethylene layer 414 on the third heat-generating copper mold 411 and the fourth heat-generating copper mold 412, the adhesion of the third heat-generating copper mold 411 and the fourth heat-generating copper mold 412 to the tab 1 itself can be prevented from affecting the transfer and fixation of the tab 1.
In one embodiment, a third silica gel layer is arranged between the third heat-generating copper mold 411 and the third polytetrafluoroethylene layer 413, and/or
A fourth silica gel layer is disposed between the fourth heat generating copper mold 412 and the fourth polytetrafluoroethylene layer 414.
The third heating copper mold 411 and the fourth heating copper mold 412 can flexibly contact the tab 1 through the third silica gel layer and the fourth silica gel layer, so that the influence of scratching and the like on the surface of the tab 1 in the clamping process is avoided.
In an embodiment, a third temperature sensing probe is disposed in the third heat generating copper mold 411, and a fourth temperature sensing probe is disposed in the fourth heat generating copper mold 412.
The third temperature sensing probe is used for monitoring the heating temperature of the third heating copper mold 411, and the fourth temperature sensing probe is used for monitoring the heating temperature of the fourth heating copper mold 412, so that the electrical conduction and disconnection of the third heating copper mold 411 and the fourth heating copper mold 412 are controlled by the heating temperatures detected by the third temperature sensing probe and the fourth temperature sensing probe, and the temperatures of the third heating copper mold 411 and the fourth heating copper mold 412 are maintained within a preset temperature range.
In an embodiment, the clamping device 4 further includes a guide rail 44 and a running mechanism 43, the running mechanism 43 is displaceably disposed on the guide rail 44, and the second air cylinder 42 is disposed on the running mechanism 43.
The movement of the travelling mechanism 43 on the guide rail 44 drives the clamping device 4 to transfer the lug 1 between different stations.
In an embodiment, the hot pressing apparatus 5 includes a fifth heat-generating copper mold 51, a sixth heat-generating copper mold 52, and a third air cylinder 55, wherein the fifth heat-generating copper mold 51 may be disposed close to or far from the sixth heat-generating copper mold 52, and the third air cylinder 55 is connected to the fifth heat-generating copper mold 51.
During hot pressing operation, the tab 1 attached with the tab adhesive 2 is placed on the sixth heating copper mold 52 through the clamping device 4, the fifth heating copper mold 51 is pressed down, and the tab adhesive 2 is pressed by the fifth heating copper mold 51 and the sixth heating copper mold 52, so that the tab adhesive 2 and the tab 1 are adhered to each other.
The fifth heat-generating copper mold 51 and the sixth heat-generating copper mold 52 have the advantages of rapid temperature rise and high heat conduction efficiency, and corresponding heating circuits are connected with the fifth heat-generating copper mold 51 and the sixth heat-generating copper mold 52 and used for controlling heating and stopping heating of the fifth heat-generating copper mold 51 and the sixth heat-generating copper mold 52.
In an embodiment, a fifth polytetrafluoroethylene layer 53 is disposed on a surface of the fifth heat-generating copper mold 51 facing the sixth heat-generating copper mold 52, a sixth polytetrafluoroethylene layer 54 is disposed on a surface of the sixth heat-generating copper mold 52 facing the fifth heat-generating copper mold 51, a fifth temperature sensing probe is disposed in the fifth heat-generating copper mold 51, and a sixth temperature sensing probe is disposed in the sixth heat-generating copper mold 52.
The fifth polytetrafluoroethylene layer 53 and the sixth polytetrafluoroethylene layer 54 have non-stick properties, and by providing the fifth polytetrafluoroethylene layer 53 and the sixth polytetrafluoroethylene layer 54 on the fifth heat-generating copper mold 51 and the sixth heat-generating copper mold 52, adhesion of the fifth heat-generating copper mold 51 and the sixth heat-generating copper mold 52 to the tab adhesive 2 itself can be avoided.
The fifth temperature sensing probe is used for monitoring the heating temperature of the fifth heating copper mold 51, and the sixth temperature sensing probe is used for monitoring the heating temperature of the sixth heating copper mold 52, so that the electric conduction and disconnection of the fifth heating copper mold 51 and the sixth heating copper mold 52 are controlled by the heating temperatures detected by the fifth temperature sensing probe and the sixth temperature sensing probe, and the temperatures of the fifth heating copper mold 51 and the sixth heating copper mold 52 are maintained within a preset temperature range.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a utmost point ear glue hot press unit, its characterized in that, includes positioning die, clamping device and hot press unit, the positioning die is located one side of hot press unit, clamping device displaceably set up in the opposite side of hot press unit, clamping device is used for with the utmost point ear one end centre gripping of attaching utmost point ear glue and remove to on the hot press unit, the positioning die is used for carrying out temporary fixation to the utmost point ear other end, the positioning die is provided with first heating device, clamping device is provided with second heating device.
2. The hot-pressing device for tab adhesive according to claim 1, wherein the positioning die comprises a first cylinder and the first heating device, the first heating device comprises a first heating copper die and a second heating copper die, the first heating copper die can be arranged close to or far away from the second heating copper die, and the first cylinder is connected with the first heating copper die.
3. The hot-pressing device for tab adhesives according to claim 2, wherein a first polytetrafluoroethylene layer is arranged on one surface of the first heating copper mold facing the second heating copper mold, and a second polytetrafluoroethylene layer is arranged on one surface of the second heating copper mold facing the first heating copper mold.
4. The hot-pressing device for tab adhesives according to claim 3, wherein a first temperature sensing probe is arranged in the first heating copper mold, and a second temperature sensing probe is arranged in the second heating copper mold.
5. The hot-pressing device for tab adhesive according to claim 1, wherein the clamping device comprises a second cylinder and the second heating device, the second heating device comprises a third heating copper die and a fourth heating copper die, the third heating copper die and the fourth heating copper die are connected with the second cylinder, and the second cylinder drives the third heating copper die and the fourth heating copper die to be close to each other or far away from each other.
6. The hot-pressing device for tab adhesive according to claim 5, wherein a third polytetrafluoroethylene layer is disposed on a surface of the third heating copper mold facing the fourth heating copper mold, and a fourth polytetrafluoroethylene layer is disposed on a surface of the fourth heating copper mold facing the third heating copper mold.
7. The hot-pressing device for tab adhesive according to claim 6, wherein a third temperature sensing probe is arranged in the third heating copper mold, and a fourth temperature sensing probe is arranged in the fourth heating copper mold.
8. The hot pressing device for tab adhesive according to claim 5, wherein the clamping device further comprises a guide rail and a traveling mechanism, the traveling mechanism is displaceably disposed on the guide rail, and the second cylinder is disposed on the traveling mechanism.
9. The hot pressing device for tab adhesive according to claim 1, wherein the hot pressing device comprises a fifth heat-generating copper mold, a sixth heat-generating copper mold, and a third cylinder, wherein the fifth heat-generating copper mold is arranged close to or far from the sixth heat-generating copper mold, and the third cylinder is connected with the fifth heat-generating copper mold.
10. The hot-pressing device for tab adhesive according to claim 9, wherein a fifth polytetrafluoroethylene layer is arranged on one surface of the fifth heating copper mold facing the sixth heating copper mold, a sixth polytetrafluoroethylene layer is arranged on one surface of the sixth heating copper mold facing the fifth heating copper mold, a fifth temperature sensing probe is arranged in the fifth heating copper mold, and a sixth temperature sensing probe is arranged in the sixth heating copper mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322475543.6U CN221328044U (en) | 2023-09-12 | 2023-09-12 | Hot press device is glued to utmost point ear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322475543.6U CN221328044U (en) | 2023-09-12 | 2023-09-12 | Hot press device is glued to utmost point ear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221328044U true CN221328044U (en) | 2024-07-12 |
Family
ID=91787279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322475543.6U Active CN221328044U (en) | 2023-09-12 | 2023-09-12 | Hot press device is glued to utmost point ear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221328044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120320020A (en) * | 2025-04-29 | 2025-07-15 | 江阴昌润新材料科技有限公司 | A high-safety, long-life, low-attenuation pole ear and its forming method |
-
2023
- 2023-09-12 CN CN202322475543.6U patent/CN221328044U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120320020A (en) * | 2025-04-29 | 2025-07-15 | 江阴昌润新材料科技有限公司 | A high-safety, long-life, low-attenuation pole ear and its forming method |
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