CN220216395U - Punching power mechanism for pole piece die cutting - Google Patents
Punching power mechanism for pole piece die cutting Download PDFInfo
- Publication number
- CN220216395U CN220216395U CN202321960817.4U CN202321960817U CN220216395U CN 220216395 U CN220216395 U CN 220216395U CN 202321960817 U CN202321960817 U CN 202321960817U CN 220216395 U CN220216395 U CN 220216395U
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- die
- pole piece
- linkage structure
- connecting plate
- frame
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- 230000007246 mechanism Effects 0.000 title claims abstract description 58
- 238000005520 cutting process Methods 0.000 title claims abstract description 28
- 238000004080 punching Methods 0.000 title claims abstract description 28
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000004044 response Effects 0.000 abstract description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 14
- 229910052744 lithium Inorganic materials 0.000 description 14
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect 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
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- Press Drives And Press Lines (AREA)
Abstract
The utility model discloses a pole piece die cutting and punching power mechanism, which relates to the technical field of pole piece die cutting equipment and comprises a frame, wherein a die bearing mechanism is arranged below the frame, and two sets of dies are arranged on the die bearing mechanism; the punch structure is connected with the frame and is positioned above the die bearing mechanism; the linkage structure is connected with the output end of the punch structure, and the punch structure drives the linkage structure to reciprocate along the vertical direction; the output end of the punch structure is in transmission connection with an eccentric shaft bearing, the eccentric shaft bearing is connected with a linkage structure, and the linkage structure is respectively connected with the two dies. According to the pole piece die cutting and punching power mechanism, the punch structure drives the two sets of die tools through the linkage structure, so that the production efficiency of equipment is effectively improved, and the eccentric shaft bearing is connected with the linkage structure, so that the linkage structure performs eccentric reciprocating motion, the structure size is smaller, the response is faster, and the manufacturing cost of the equipment is reduced.
Description
Technical Field
The utility model relates to the technical field of pole piece punching equipment, in particular to a pole piece die cutting and punching power mechanism.
Background
Lithium batteries are a new generation of green high-energy batteries with excellent performance, and the working principle of the lithium batteries is to convert chemical energy into electric energy, and in the process, a conductive medium is needed to convert the chemical energy into electric energy for transmission. In the common materials, the metal materials are materials with better conductivity, and in the metal materials, the materials with low price and better conductivity are copper foil and aluminum foil; the positive and negative electrode potential of the lithium battery determines positive and negative electrode plates, and the positive and negative electrode plates of the lithium battery need to be punched in the production process of the positive and negative electrode plates of the lithium battery in the processing process.
At present, in the production process of the positive and negative lithium battery pole pieces, a punching die is generally required to be used for punching and forming the positive and negative lithium battery pole pieces, when the positive and negative lithium battery pole pieces are punched, people firstly place the positive and negative lithium battery pole pieces on an operating table and move to the lower side to be in contact with the positive and negative lithium battery pole pieces through the punching die, so that the positive and negative lithium battery pole pieces are punched and formed by the punching die.
Chinese patent CN202210291568.8 discloses a high-speed punching die for forming positive and negative plates of lithium battery, which comprises a placing table, wherein the top of the supporting frame is provided with the placing table; the front side and the rear side of the right side surface of the top of the placement table are respectively provided with a guide rod; and a sliding frame is arranged between the upper parts of the two guide rods in a sliding manner, and the sliding frame is connected with the placing table in a sliding manner. The sliding frame drives the punching module to move downwards, the punching module drives the first connecting rod and the clamping block to move downwards, and the clamping block moves to be in contact with the positive and negative pole pieces of the lithium battery, so that the clamping block compresses the positive and negative pole pieces of the lithium battery.
The existing die-cutting and punching power structure drives the die to move back and forth in the Z-axis direction, only realizes the function of supporting one die set by one die-cutting and punching power structure, has high structure cost and large volume, and influences the production efficiency.
Disclosure of Invention
The utility model aims to at least solve the technical problems of high structural cost, large volume and influenced production efficiency of the traditional die-cutting and punching power structure which drives a die to move back and forth in the Z-axis direction and only realizes the function of supporting one set of die by one die-cutting and punching power structure in the prior art. Therefore, the utility model provides a pole piece die cutting and punching power mechanism, one power structure drives two sets of dies, the structure volume is effectively reduced, the structure cost is reduced, and the production efficiency is effectively improved.
A pole piece die cutting power mechanism according to some embodiments of the present utility model includes:
the device comprises a rack, wherein a die bearing mechanism is arranged below the rack, and two sets of dies are arranged on the die bearing mechanism;
the punch structure is connected with the frame and is positioned above the die bearing mechanism;
the linkage structure is connected with the output end of the punch structure, and the punch structure drives the linkage structure to reciprocate along the vertical direction;
the output end of the punch structure is in transmission connection with an eccentric shaft bearing, the eccentric shaft bearing is connected with the linkage structure, and the linkage structure is respectively connected with the two dies.
According to some embodiments of the utility model, the punch structure comprises a driving motor, a speed reducing mechanism and a coupling, wherein the driving motor is fixed above the frame, an output shaft of the driving motor is connected with an input end of the speed reducing mechanism, an output end of the speed reducing mechanism is connected with the coupling, and the coupling is in transmission connection with the eccentric shaft bearing.
According to some embodiments of the utility model, the eccentric shaft bearing is connected with a guide block, the guide block extends to one side of the linkage structure and is connected with the linkage structure, and the eccentric shaft bearing drives the guide block to eccentrically rotate.
According to some embodiments of the utility model, the linkage structure comprises a linear guide rail and a connecting plate, wherein the linear guide rail is fixedly connected to the frame, the connecting plate is in sliding connection with the linear guide rail, the guide block is connected with the connecting plate, and the connecting plate reciprocates along the extending direction of the linear guide rail.
According to some embodiments of the utility model, the linear guide rail comprises two groups, the two groups are arranged on the frame at intervals, and two sides of the connecting plate are respectively connected with the linear guide rail in a sliding manner.
According to some embodiments of the utility model, the linkage structure comprises a guide structure, the guide structure is arranged on the connecting plate, the bottom of the guide structure is connected with the die, and the guide structure moves synchronously with the connecting plate.
According to some embodiments of the utility model, the number of guide structures is equal to the number of dies.
According to some embodiments of the utility model, the mould bearing mechanism is connected with the lower mould of the mould, the guiding structure is connected with the upper mould of the mould, and the guiding structure is arranged above the lower mould of the mould and is used for combining the upper mould and the lower mould of the mould.
According to some embodiments of the utility model, an auxiliary structure is arranged in the middle of the connecting plate, one end of the auxiliary structure is in contact with the connecting plate, the other end of the auxiliary structure is in contact with the frame, and the auxiliary structure is used for reducing the inertial force of the up-and-down motion of the linkage structure.
According to some embodiments of the utility model, the auxiliary structure comprises a spring assembly and a limit groove, the limit groove is connected with the frame, the spring assembly is arranged in the limit groove, one end of the spring assembly is contacted with the bottom of the limit groove, and the other end of the spring assembly is elastically contacted with the connecting plate.
According to some embodiments of the utility model, the pole piece die cutting and punching power mechanism has at least the following beneficial effects: the punch structure drives two sets of die tools through the linkage structure simultaneously, so that the production efficiency of equipment is effectively improved, the eccentric shaft bearing is connected with the linkage structure, the linkage structure is enabled to do eccentric reciprocating motion, the structure size is smaller, the response is faster, and the manufacturing cost of the equipment is reduced.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic perspective view of a pole piece die cutting and punching power mechanism in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of a punch structure according to an embodiment of the present utility model;
fig. 3 is a schematic perspective view of a linkage structure according to an embodiment of the present utility model.
Reference numerals:
a frame 100, a die carrying mechanism 110, a die 120,
Punch structure 200, driving mechanism 210, speed reducing mechanism 220, coupling 230, eccentric shaft bearing 240, guide block 250,
Linkage structure 300, linear guide 310, connecting plate 320, guide structure 330, auxiliary structure 340, spring assembly 341, limit groove 342.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, top, bottom, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
A pole piece die cutting power mechanism according to an embodiment of the present utility model is described below with reference to fig. 1-3.
As shown in fig. 1-3, the pole piece die cutting and punching power mechanism comprises a frame 100, a punch structure 200, a linkage structure 300 and a die 120 conveying structure. The mold 120 carrying mechanism 110 is disposed below the frame 100, two sets of molds 120 are disposed on the mold 120 carrying mechanism 110, and the mold 120 carrying mechanism 110 is a technical solution well known to those skilled in the art, which is not described in detail in this embodiment. The main improvements of the present utility model are the punch structure 200 and the linkage structure 300.
The punch structure 200 is connected with the frame 100 and is located above the bearing mechanism 110 of the die 120, and the punch structure 200 is a power structure and is mainly used for providing power for the linkage structure 300 to drive the die 120 to move. And the linkage mechanism is connected with the output end of the punch structure 200, and the punch structure 200 drives the linkage structure 300 to reciprocate along the vertical direction.
Wherein, both sides of the linkage structure 300 are respectively connected with the two dies 120, the output end of the punch structure 200 is in transmission connection with an eccentric shaft bearing 240, and the eccentric shaft bearing 240 is connected with the linkage structure 300. The linkage structure 300 drives the two dies 120 simultaneously, the output power requirement is larger, the punch structure 200 drives the linkage structure 300 to reciprocate along the vertical direction through the eccentric shaft bearing 240, and the linkage structure 300 can realize reciprocating motion through eccentric rotation due to the structural characteristics of the eccentric shaft bearing 240, so that the load of the punch structure 200 is reduced, and the volume of equipment is reduced. And the structure of the mold 120 and the speed of separation can be improved, and the production efficiency can be improved.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the ram structure 200 includes a driving motor, a speed reducing mechanism 220 and a coupling 230, wherein the driving motor is fixed above the frame 100, an output shaft of the driving motor is connected with an input end of the speed reducing mechanism 220, an output end of the speed reducing mechanism 220 is connected with the coupling 230, and the coupling 230 is in driving connection with an eccentric shaft bearing 240.
Specifically, the driving motor frame 100 is provided above the frame 100, and the reduction mechanism 220 and the coupling 230 are arranged along the axial direction of the driving motor output shaft, with higher power transmission efficiency. The power rotation speed output by the punch structure 200 through the speed reducing mechanism 220 is reduced, and the torque is increased, so that the power requirement of the linkage structure 300 for driving the two dies 120 can be better met. The coupling 230 can facilitate the establishment of connection between the reduction mechanism 220 and the linkage structure 300, and facilitate the connection between the cutoff ram structure 200 and the linkage structure 300 by a later worker during the maintenance of the equipment.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the eccentric shaft bearing 240 is connected to a guide block 250, and the guide block 250 extends to one side of the linkage structure 300 and is connected to the linkage structure 300, and the eccentric shaft bearing 240 drives the guide block 250 to eccentrically rotate.
Specifically, the structure of the eccentric shaft bearing 240 is a technical solution well known to those skilled in the art, and will not be described in detail in the present embodiment. The eccentric shaft bearing 240 is connected with the coupling 230, and can drive the eccentric shaft bearing 240 and the guide block 250 to synchronously perform eccentric rotation, so as to realize a reciprocating fluctuation action effect. The guide block 250 is fixedly connected with the linkage structure 300, so that the linkage structure 300 is driven to reciprocate, and the die 120 connected with the linkage structure 300 synchronously moves up and down. Realize guide block 250 vertical direction round trip movement, a set of simple and easy power structure has solved current double punch power structure with high costs, bulky problem.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the linkage 300 includes a linear guide 310 and a connection plate 320, the linear guide 310 is fixedly connected to the frame 100, the connection plate 320 is slidably connected to the linear guide 310, the guide block 250 is connected to the connection plate 320, and the connection plate 320 reciprocates along the extension direction of the linear guide 310.
Specifically, the two sides of the connection plate 320 are respectively connected with the upper die of the die 120, and the connection plate 320 is slidably connected to the linear guide rail 310, so that the movement direction of the connection plate 320 can be limited, the connection plate 320 is ensured to reciprocate along the vertical direction, and the equipment precision is improved.
In a further embodiment, as shown in fig. 1 and 2, the linear guide 310 includes two groups, which are disposed on the frame 100 at intervals, and two sides of the connection plate 320 are slidably connected to the linear guide 310, respectively. Specifically, the two sets of linear guide rails 310 respectively limit two sides of the connecting plate 320, so that two sides of the connecting plate 320 are in horizontal position, and working time of the two dies 120 is not synchronous due to weight deviation.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the linkage structure 300 includes a guide structure 330, the guide structure 330 is disposed on the connection plate 320, the bottom of the guide structure 330 is connected to the mold 120, and the guide structure 330 moves synchronously with the connection plate 320.
Specifically, the position of the guide structure 330 on the connection plate 320 is adjustable, so that the dies 120 on the upper and lower sides are aligned according to the dies 120 on the die 120 carrying mechanism 110.
In a further embodiment, as shown in fig. 1 and 2, the number of guide structures 330 is equal to the number of dies 120.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the mold 120 carrying mechanism 110 is connected to the lower mold of the mold 120, the guide structure 330 is connected to the upper mold of the mold 120, and the guide structure 330 is disposed above the lower mold of the mold 120 for combining the upper and lower molds of the mold 120. Specifically, the upper die and the lower die of the die 120 are respectively connected to the guide structure 330 and the bearing mechanism 110 of the die 120, and the upper die is driven by the linkage structure 300 to realize reciprocating motion, so that the production efficiency is improved.
In some embodiments of the present utility model, as shown in fig. 1 and 2, an auxiliary structure 340 is provided at a middle portion of the connection plate 320, one end of the auxiliary structure 340 is in contact with the connection plate 320, and the other end is in contact with the frame 100, and the auxiliary structure 340 serves to slow down an inertial force of the up-down movement of the linkage structure 300.
Specifically, since the connection plate 320 connects the two sets of molds 120, the weight is large, and when the connection plate 320 moves downward, a large inertial force is generated, resulting in an increase in the output load of the driving mechanism 210 driving the linkage 300 to move upward. In order to avoid overload of the drive mechanism 210, the auxiliary structure 340 is provided to relieve the operating load of the drive mechanism 210.
In a further embodiment, as shown in fig. 1 and 2, the auxiliary structure 340 includes a spring assembly 341 and a limiting groove 342, the limiting groove 342 is connected with the frame 100, the spring assembly 341 is disposed in the limiting groove 342, one end of the spring assembly 341 contacts with the bottom of the limiting groove 342, and the other end contacts with the connecting plate 320 elastically. When the connecting plate 320 moves downwards to the room, the spring component 341 compresses, the inertia force of the downward movement of the connecting plate 320 is relieved, when the driving mechanism 210 drives the connecting plate 320 to move upwards, the spring component 341 recovers deformation, the auxiliary connecting plate 320 moves upwards, and the load of the driving mechanism 210 is relieved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a die-cut power unit of pole piece which characterized in that includes:
the device comprises a frame (100), wherein a die bearing mechanism (110) is arranged below the frame (100), and two sets of dies (120) are arranged on the die bearing mechanism (110);
a punch structure (200), the punch structure (200) being connected to the frame (100) above the die carrying mechanism (110);
the linkage structure (300), the said linkage structure (300) is connected with output end of the said punch head structure (200), the said punch head structure (200) drives the said linkage structure (300) to reciprocate along the vertical direction;
the output end of the punch structure (200) is in transmission connection with an eccentric shaft bearing (240), the eccentric shaft bearing (240) is connected with the linkage structure (300), and the linkage structure (300) is respectively connected with the two dies (120).
2. The pole piece die cutting and punching power mechanism according to claim 1, wherein the punch structure (200) comprises a driving motor, a speed reducing mechanism (220) and a coupler (230), the driving motor is fixed above the frame (100), an output shaft of the driving motor is connected with an input end of the speed reducing mechanism (220), an output end of the speed reducing mechanism (220) is connected with the coupler (230), and the coupler (230) is in transmission connection with the eccentric shaft bearing (240).
3. The pole piece die cutting and punching power mechanism as claimed in claim 2, wherein the eccentric shaft bearing (240) is connected with a guide block (250), the guide block (250) extends to one side of the linkage structure (300) and is connected with the linkage structure (300), and the eccentric shaft bearing (240) drives the guide block (250) to eccentrically rotate.
4. A die cutting and punching power mechanism for pole piece die cutting according to claim 3, characterized in that the linkage structure (300) comprises a linear guide rail (310) and a connecting plate (320), the linear guide rail (310) is fixedly connected to the frame (100), the connecting plate (320) is slidably connected with the linear guide rail (310), the guide block (250) is connected with the connecting plate (320), and the connecting plate (320) reciprocates along the extending direction of the linear guide rail (310).
5. The pole piece die cutting and punching power mechanism as claimed in claim 4, wherein the linear guide rail (310) comprises two groups, the two groups are arranged on the frame (100) at intervals, and two sides of the connecting plate (320) are respectively in sliding connection with the linear guide rail (310).
6. The die-cutting and punching power mechanism for pole piece die-cutting according to claim 5, wherein the linkage structure (300) comprises a guide structure (330), the guide structure (330) is arranged on the connecting plate (320), the bottom of the guide structure (330) is connected with the die (120), and the guide structure (330) moves synchronously with the connecting plate (320).
7. The pole piece die cutting power mechanism as recited in claim 6, wherein the number of guide structures (330) is equal to the number of dies (120).
8. The die cutting and punching power mechanism for pole piece die cutting according to claim 6, wherein the die bearing mechanism (110) is connected with a lower die of the die (120), the guiding structure (330) is connected with an upper die of the die (120), and the guiding structure (330) is disposed above the lower die of the die (120) for combining the upper die and the lower die of the die (120).
9. The die-cutting and punching power mechanism for pole piece die-cutting according to claim 4, wherein an auxiliary structure (340) is arranged in the middle of the connecting plate (320), one end of the auxiliary structure (340) is in contact with the connecting plate (320), the other end of the auxiliary structure is in contact with the frame (100), and the auxiliary structure (340) is used for reducing the inertial force of the up-and-down motion of the linkage structure (300).
10. The die-cut power unit of claim 9, wherein the auxiliary structure (340) comprises a spring assembly (341) and a limiting groove (342), the limiting groove (342) is connected with the frame (100), the spring assembly (341) is arranged in the limiting groove (342), one end of the spring assembly (341) is contacted with the bottom of the limiting groove (342), and the other end of the spring assembly (341) is elastically contacted with the connecting plate (320).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321960817.4U CN220216395U (en) | 2023-07-24 | 2023-07-24 | Punching power mechanism for pole piece die cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321960817.4U CN220216395U (en) | 2023-07-24 | 2023-07-24 | Punching power mechanism for pole piece die cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220216395U true CN220216395U (en) | 2023-12-22 |
Family
ID=89181721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321960817.4U Active CN220216395U (en) | 2023-07-24 | 2023-07-24 | Punching power mechanism for pole piece die cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220216395U (en) |
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2023
- 2023-07-24 CN CN202321960817.4U patent/CN220216395U/en active Active
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