CN216911756U - Stamping die capable of trimming - Google Patents
Stamping die capable of trimming Download PDFInfo
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- CN216911756U CN216911756U CN202220611529.7U CN202220611529U CN216911756U CN 216911756 U CN216911756 U CN 216911756U CN 202220611529 U CN202220611529 U CN 202220611529U CN 216911756 U CN216911756 U CN 216911756U
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Abstract
The application discloses but stamping die of deburring belongs to mould technical field. An trimmable stamping die, comprising: the upper die comprises an upper die body, the lower part of the upper die body is provided with a trimming and shaping insert, the trimming and shaping insert is provided with a first cutting edge, and the upper die body is provided with a driving mechanism for driving the trimming and shaping insert to move; the lower die comprises a lower die body, a lower die trimming insert is arranged at one side end of the upper part of the lower die body and is used for bearing a blank, a second cutting edge is arranged on the lower die trimming insert and corresponds to the first cutting edge, and a positioning mechanism is arranged at the other side end of the upper part of the lower die body and is used for positioning the blank; the driving mechanism drives the trimming and shaping insert to move downwards, and the first cutting edge and the second cutting edge are matched to cut off the blank so as to trim the blank. The method and the device can realize that trimming and forming are completed by changing two processes into one process, simplify the process and save the cost.
Description
Technical Field
The application relates to the technical field of dies, in particular to a stamping die capable of trimming.
Background
The stamping die is the main process equipment for stamping, the stamping part is generally completed by the relative movement of an upper die and a lower die, and the basic components of the stamping die generally comprise a male die, a female die and a blank holder. In the production and processing process of automobile sheet metal parts, the production of the automobile sheet metal parts mostly needs a plurality of processes to be finished, for example, common process arrangement includes: drawing, trimming, flanging and the like. And each current process all needs an independent set of mould and punch press to accomplish usually, has the mould and the lathe input cost height, and the installation and debugging is loaded down with trivial details, work efficiency low grade problem. At present, how to reduce the manufacturing cost of an automobile stamping die, shorten the manufacturing period, improve the production efficiency and enable the die to better meet the production conditions faster is a problem that various die factories are researching and exploring.
The existing stamping die has certain defects. For example, a stamped part generally requires two processes of forming and trimming, and accordingly requires forming dies and trimming dies, so that the number of die sets is increased, the manufacturing cost is increased to a certain extent, and the production efficiency is also reduced. In addition, the finished piece needs a plurality of working procedures for processing, and the accumulation of the positioning deviation of the die and the processing error of the workpiece makes the quality of the finished piece difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned problems, the present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model provides the stamping die capable of trimming, which can well combine the forming and trimming together, can reduce the die process cost, improve the production efficiency and overcome the defects in the prior art.
In order to solve the technical problem, the present application is implemented as follows:
the application provides a but stamping die of deburring, it includes:
the blank trimming and shaping device comprises an upper die and a lower die, wherein the upper die comprises an upper die body, the lower part of the upper die body is provided with a trimming and shaping insert, the side surface of the trimming and shaping insert is provided with a first cutting edge for trimming a blank, and the upper die body is also provided with a driving mechanism for driving the trimming and shaping insert to move;
the lower die comprises a lower die body, a lower die trimming insert is arranged at one side end of the upper part of the lower die body and used for bearing a blank, a second cutting edge is arranged on the lower die trimming insert and corresponds to the first cutting edge, and a positioning mechanism is arranged at the other side end of the upper part of the lower die body and used for positioning the blank;
the driving mechanism drives the trimming and shaping insert to move downwards, and the first cutting edge of the trimming and shaping insert is matched with the second cutting edge of the lower die trimming insert to cut off a blank so as to trim the blank.
Optionally, the first cutting edge is located at the bottom end of the trimming and shaping insert and on the side away from the upper die body;
and/or the second cutting edge is positioned at the top end of the lower die trimming insert and faces one side of the positioning mechanism.
Optionally, the trimming and shaping insert comprises a first side surface and a bottom surface, the first side surface is intersected with the bottom surface, the first side surface is a plane, at least part of the bottom surface is provided with an arc-shaped surface, and the upper end of the lower die body is provided with a concave profile matched with the arc-shaped surface.
Optionally, the lower die trimming insert comprises a second side surface and a top surface, the second side surface intersects the top surface, and both the second side surface and the top surface are planar; after cutting the blank, the trimming and shaping insert continues to move downwards, and the first side surface of the trimming and shaping insert is in contact with the second side surface of the lower die trimming insert.
Optionally, the lower die trimming insert is rectangular;
and/or at least part of one side of the lower die trimming insert, which is far away from the positioning mechanism, is not in contact with the lower die body.
Optionally, the positioning mechanism includes a first positioning plate and a second positioning plate connected to the first positioning plate, the first positioning plate is connected to the lower die body in a sliding manner, and the second positioning plate is used for abutting against the end of the blank.
Optionally, the first positioning plate and the second positioning plate are perpendicular to each other;
and/or the positioning mechanism further comprises a driving part for driving the first positioning plate and the second positioning plate to move.
Optionally, the driving mechanism is driven by a motor or a cylinder.
Optionally, the upper die is further provided with a pressing mechanism, and the pressing mechanism can slide up and down along the upper die body.
Optionally, the pressing mechanism includes a pressing core body and a pressing core nitrogen spring, the pressing core body is slidably connected to the upper die body, and the pressing core nitrogen spring is fixed between the upper die body and the pressing core body.
The technical scheme of the utility model at least has the following beneficial effects:
in the embodiment of the application, the trimming stamping die comprises an upper die and a lower die corresponding to the upper die, wherein the upper die is provided with a trimming and shaping insert with a first cutting edge, the lower die is provided with a lower die trimming insert with a second cutting edge, a blank can be placed on the lower die trimming insert, and the blank is cut off by enabling the trimming and shaping insert to move downwards and utilizing the first cutting edge of the trimming and shaping insert to be matched with the second cutting edge of the lower die trimming insert so as to finish trimming the blank; further, after cutting the blank, the trim and truing insert may continue to move downward to complete the forming process. Meanwhile, the stamping die capable of trimming is provided with a positioning mechanism for positioning the blank, so that the positioning accuracy of the die can be improved, the processing or trimming error is prevented, and the quality of a stamped part is ensured. Therefore, the stamping die capable of trimming has low processing and manufacturing cost and high blank processing and forming efficiency; the forming and trimming can be well combined together, the die is compact, the process is simplified, the die maintenance quantity is reduced, the operation is convenient, and the cost is saved.
Drawings
FIG. 1 is a schematic structural view of an edgeable stamping die provided in accordance with some embodiments of the present invention;
FIG. 2 is an exploded view of a trimmable stamping die provided in accordance with certain embodiments of the present invention;
FIG. 3 is a schematic diagram of a trim and truing insert according to some embodiments of the present invention;
FIG. 4 is a schematic diagram of a lower die trim insert according to some embodiments of the present invention.
Description of reference numerals:
1-trimming and shaping an insert; 101-a first cutting edge; 102-a first side; 103-a bottom surface;
2-trimming the insert of the lower die; 201-a second cutting edge; 202-a second side; 203-a top surface;
3-a positioning mechanism; 301-a first positioning plate; 302-a second positioning plate; 303-a drive member;
4-lower die body; 401-concave profile;
5-blank.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the present invention, unless stated to the contrary, use of the directional terms "upper, lower, left, right" are generally with respect to the orientation shown in the drawings, or with respect to the component itself in a vertical, or gravitational orientation. Similarly, for ease of understanding and description, the definitions of "inner and outer" are consistent with the usual definitions of inner and outer, such as "inner and outer" referring to the inner and outer contours of the respective components themselves, but the above directional words are not intended to limit the utility model.
The embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Referring to fig. 1-4, in some embodiments of the present application, a trimmable press mold is provided that includes an upper mold and a lower mold adapted to fit under the upper mold. The stamping die capable of trimming provided by the embodiment can solve the problems of low efficiency and high cost caused by the fact that the existing die needs two working procedures for trimming and forming treatment.
As shown in fig. 1 to 2, the upper die comprises an upper die body, the lower part of the upper die body is provided with a trimming and shaping insert 1, the side surface of the trimming and shaping insert 1 is provided with a first cutting edge 101 for trimming the blank 5, and the upper die body is further provided with a driving mechanism for driving the trimming and shaping insert 1 to move.
The trimming and reshaping insert 1 is connected to the lower end of the upper die body, and not only can be used for trimming a workpiece, but also can be used for reshaping the workpiece. In order to enable the trimming and shaping insert 1 to have the trimming function, a first cutting edge 101 for trimming the blank 5 may be provided on the side surface of the trimming and shaping insert 1 so as to facilitate the trimming operation. In addition, in order to enable the trimming and shaping insert 1 to move up and down, the upper die can be further provided with a driving mechanism, and the output end of the driving mechanism is connected with the trimming and shaping insert 1, so that the trimming and shaping insert 1 can be driven to move up or down by the driving mechanism.
Optionally, the trimming and shaping insert 1 is detachably connected with the upper die body.
It should be noted that the present embodiment is not limited to the specific structure of the upper die body, and the specific structure of the upper die body can refer to the structure of the upper die body conventional in the related art, and will not be described in detail here. The core of the upper die is that the upper die comprises the trimming and shaping insert 1 provided by the embodiment.
As shown in fig. 1 to 2, the lower die includes a lower die body 4, one side end of the upper portion of the lower die body 4 is provided with a lower die trimming insert 2, the lower die trimming insert 2 is used for bearing a blank 5, the lower die trimming insert 2 is provided with a second cutting edge 201, the second cutting edge 201 corresponds to the first cutting edge 101, the other side end of the upper portion of the lower die body 4 is provided with a positioning mechanism 3, and the positioning mechanism 3 is used for positioning the blank 5.
The lower die trimming insert 2 is connected to one side end of the upper part of the lower die body 4, and the positioning mechanism 3 can be connected to the other side end of the upper part of the lower die body 4; if the lower die trim insert 2 is provided on the left side of the upper end of the lower die body 4, the positioning mechanism 3 may be provided on the right side of the upper end of the lower die body 4. The lower die trimming insert 2 can be used for bearing the blank 5, namely, the blank 5 can be placed on the lower die trimming insert 2, and the positioning mechanism 3 can be used for positioning the blank 5 so as to ensure the position of the blank 5. Meanwhile, the lower die trimming insert 2 is provided with a second cutting edge 201 corresponding to the first cutting edge 101 of the trimming and shaping insert 1, and the blank 5 is cut by matching the first cutting edge 101 of the trimming and shaping insert 1 with the second cutting edge 201 of the lower die trimming insert 2, so that the blank 5 is trimmed.
Optionally, the distance between the lower die trimming insert 2 and the positioning mechanism 3 is adapted to the length of the trimming and shaping insert 1. Thus, after the blank 5 is cut, the trimming and shaping insert 1 continues to move downward, so that the trimming and shaping insert 1 can be placed between the lower die trimming insert 2 and the positioning mechanism 3.
Optionally, the lower die trimming insert 2 is detachably connected to the lower die body 4.
It should be noted that the present embodiment is not limited to the specific structure of the lower die body 4, and the specific structure of the lower die body 4 can refer to the structure of the lower die body conventional in the related art, and will not be described in detail here. The core of the lower die comprises a lower die trimming insert 2 and a positioning mechanism 3 provided by the embodiment.
The trimming stamping die is matched with the trimming and shaping insert 1, the lower die trimming insert 2 and the like, so that a workpiece can be trimmed more conveniently, and the working efficiency can be improved. The stamping die capable of trimming is simple in structure and convenient to use, and can combine two processes into one process, so that the cost is saved.
In the embodiment, when the trimming stamping die is used, the blank 5 can be placed on the lower die trimming insert 2 of the lower die, and the blank 5 is positioned by the positioning mechanism 3 so as to ensure the position of the blank 5; then, the trimming and shaping insert 1 may be driven to move downward by a driving mechanism, and when the trimming and shaping insert 1 contacts the lower die trimming insert 2, the first cutting edge 101 of the trimming and shaping insert 1 cooperates with the second cutting edge 201 of the lower die trimming insert 2 to cut the blank 5, so as to trim the blank 5. Further, after the blank 5 is cut off, the trimming and shaping insert 1 can be continuously driven to move downwards by the driving mechanism, and the trimming insert is embedded into the lower die body 4, so that the forming process is completed. That is, after the blank 5 is cut, the blank 5 is driven to move downwards by the pressure of the upper die body and the trimming and shaping insert 1, and the forming process of the material sheet is completed through the upper die body, the trimming and shaping insert 1 and the lower die body 4.
Therefore, the trimming stamping die can complete the two processes into one process, so that the cost can be saved; and the die is compact, the punching operation can be realized by the scheme under the condition that the table surface of the machine tool is limited, in addition, the number of die maintenance is reduced because of the synthesis of a sequence, the production efficiency is improved, and the quality of a finished piece is ensured.
In some embodiments, the first cutting edge 101 is located at the bottom end of the trimming and shaping insert 1 and on the side facing away from the upper die body; the second cutting edge 201 is located at the top end of the lower die trimming insert 2 and faces one side of the positioning mechanism 3. Therefore, the structure is simple, the processing and the manufacturing are easy, the cutting is facilitated, and the connection is also convenient.
Optionally, as shown in fig. 3 to 4, the trimming and shaping insert 1 includes a first side surface 102 and a bottom surface 103, the first side surface 102 intersects with the bottom surface 103, the first side surface 102 is a plane, at least a part of the bottom surface 103 has an arc-shaped surface, and the upper end of the lower die body 4 is provided with a concave surface 401 matching with the arc-shaped surface. In order to conform to the concave surface 401 in the lower die body 4, at least a part of the bottom surface 103 of the trim insert 1 needs to be curved. In addition, the bottom surface 103 may also have a flat surface, for example, a portion of the bottom surface 103 near the first side surface 102 may be approximately flat. The intersection of the first side surface 102 and the bottom surface 103 may be provided with a first cutting edge 101.
Optionally, as shown in fig. 3 to 4, the lower die trimming insert 2 includes a second side surface 202 and a top surface 203, the second side surface 202 intersects the top surface 203, and both the second side surface 202 and the top surface 203 are planar; alternatively, the end of the top surface 203 remote from the positioning mechanism 3 may be provided with a chamfer. The intersection of the second side 202 and the top 203 may be provided with a second cutting edge 201. After the blank 5 is cut off, the driving mechanism drives the trimming and shaping insert 1 to move downwards continuously, and the first side surface 102 of the trimming and shaping insert 1 is in contact with the second side surface 202 of the lower die trimming and shaping insert 2. The trimming and shaping insert 1 can be arranged between the second side surface 202 of the lower die trimming insert 2 and the positioning mechanism 3 to complete the forming process of the blank 5.
Therefore, the provided stamping die capable of trimming not only can combine two-sequence operation into one-sequence operation to be completed, but also has compact structure and small occupied space.
Optionally, the first cutting edge 101 of the trimming and shaping insert 1 is perpendicular to the second cutting edge 201 of the lower die trimming insert 2.
In some embodiments, the lower die trim insert 2 is substantially rectangular. Therefore, the structure is simple, the processing and the manufacturing are easy, and the cost is lower.
In some embodiments, at least a portion of a side of the lower die trim insert 2 remote from the positioning mechanism 3 is not in contact with the lower die body 4. That is, at least a portion of the lower die trim may be suspended. One part of the lower die trimming insert 2 can be connected with the lower die body 4, and the rest part of the lower die trimming insert 2 can be suspended.
Alternatively, the lower die trim insert 2 is fastened to the lower die body 4 by bolts. Alternatively, the trim insert 1 is fastened to the upper die body by bolts. Of course, the specific connection manner of the lower die trimming insert 2 and the lower die body 4, and the specific connection manner of the trimming and shaping insert 1 and the upper die body may also adopt various detachable connection manners well known in the art, as long as the purpose of the present application is not limited, and the detailed description is omitted here.
In some embodiments, the positioning mechanism 3 includes a first positioning plate 301 and a second positioning plate 302 connected to the first positioning plate 301, the first positioning plate 301 is slidably connected to the lower die body 4, and the second positioning plate 302 is configured to abut against an end of the blank 5. The positioning mechanism 3 can be used for positioning the blank 5, so that the position of the blank 5 can be ensured, and the processing and forming quality of the blank 5 can be improved. The positioning mechanism 3 can be slidably connected to the lower die body 4 by the first positioning plate 301, so that the position of the positioning mechanism 3 can be adjusted by sliding the first positioning plate 301 on the lower die body 4, and after the position is adjusted, the position of the blank 5 can be ensured by abutting the second positioning plate 302 against one end of the blank 5, thereby improving the positioning stability of the blank 5. Moreover, the positioning mechanism 3 has the advantages of simple structure, convenient adjustment, easy processing and manufacturing and lower cost.
Optionally, the first positioning plate 301 and the second positioning plate 302 are perpendicular to each other. The first positioning plate 301 may be disposed along a horizontal direction, and the second positioning plate 302 may be disposed along a vertical direction, optionally, the first positioning plate 301 and the second positioning plate 302 may be integrally formed, so that the integrity is good, and the structure is more reliable; or, the second positioning plate 302 and the second positioning plate 302 may also adopt a split structure, and the first positioning plate 301 and the second positioning plate 302 may be connected together by screws or the like, so that the flexibility is good, and the processing and manufacturing are more convenient. Alternatively, the side of the second positioning plate 302 that is used to contact the blank 5 has an arc surface, such as a concave surface or a convex surface that is adapted to the blank 5.
Optionally, the positioning mechanism 3 further comprises a driving part 303 for driving the first positioning plate 301 and the second positioning plate 302 to move. Alternatively, the driving part 303 may be connected to the first positioning plate 301 or the second positioning plate 302, and the driving part 303 may drive the first positioning plate 301 to slide on the lower mold body 4 and simultaneously drive the first positioning plate 301 to move. The driving member 303 may adopt a driving structure such as a motor or an air cylinder, which is not limited in this embodiment.
Alternatively, in other embodiments, a sliding groove or a sliding rail may be provided on the lower die body 4, and a sliding block adapted to the sliding groove or the sliding rail may be provided at the lower end of the first positioning plate 301. The sliding block slides on the sliding groove or the sliding rail to drive the first positioning plate 301 to slide on the lower die body 4 and drive the first positioning plate 301 to move. Further, the positioning mechanism 3 may further be provided with a limiting structure for limiting the moving position of the slider.
In some embodiments, the drive mechanism (not shown) is driven by a motor or by a pneumatic cylinder. The driving mechanism may be one commonly used in the art and applied in a stamping die, and this embodiment is not limited thereto. The mode of adopting motor or cylinder drive, convenient operation, easy control also is convenient for connect and install.
The driving mechanism is connected with the trimming and shaping insert 1 and is used for driving the trimming and shaping insert 1 to move. The driving mechanism can also be connected with other structures in the upper die body so as to drive the other structures in the upper die body or the upper die body to move up or down.
In some embodiments, the upper mold is further provided with a pressing mechanism (not shown) which can slide up and down along the upper mold body. The material pressing mechanism is movably arranged on the upper die body and can be used for fixing the blank.
Optionally, the pressing mechanism includes a pressing core body and a pressing core nitrogen spring, the pressing core body is slidably connected to the upper die body, and the pressing core nitrogen spring is fixed between the upper die body and the pressing core body. The material pressing mechanism can improve the stability of the material pressing core through the arrangement of the material pressing core nitrogen spring, can firmly fix the blank, and is favorable for improving the processing and forming quality of the blank and the service life of the die.
In addition, in other embodiments, the pressing mechanism may also adopt other specific structures and connection manners common in the related art, which are not limited in this embodiment.
It can be understood that the upper die and the lower die may further include other structures such as a punch, a guiding mechanism, and the like, and the structures of the other structures such as the punch, the guiding mechanism, and the like in the upper die and the lower die may all refer to the prior art, and may adopt a structure and a connection manner that are commonly used in the related art, as long as the purpose of the present application is not limited, and the present embodiment is not described in detail herein.
Therefore, the stamping die capable of trimming in the embodiment of the application has the advantages that the die is simple in structure and convenient to use, the forming and trimming can be completed through one process, so that the two processes are combined into one process, the cost is saved, the production efficiency is improved, and the quality of a finished product is guaranteed.
Those not described in detail in this specification are within the skill of the art.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the utility model is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. An trimmable stamping die, comprising:
the blank trimming and shaping device comprises an upper die and a lower die, wherein the upper die comprises an upper die body, the lower part of the upper die body is provided with a trimming and shaping insert, the side surface of the trimming and shaping insert is provided with a first cutting edge for trimming a blank, and the upper die body is also provided with a driving mechanism for driving the trimming and shaping insert to move;
the lower die comprises a lower die body, a lower die trimming insert is arranged at one side end of the upper part of the lower die body and used for bearing a blank, a second cutting edge is arranged on the lower die trimming insert and corresponds to the first cutting edge, and a positioning mechanism is arranged at the other side end of the upper part of the lower die body and used for positioning the blank;
the driving mechanism drives the trimming and shaping insert to move downwards, and the first cutting edge of the trimming and shaping insert is matched with the second cutting edge of the lower die trimming insert to cut off a blank so as to trim the blank.
2. The trimmable stamping die of claim 1, wherein the first cutting edge is located at a bottom end of the trim shaping insert on a side facing away from the upper die body;
and/or the second cutting edge is positioned at the top end of the lower die trimming insert and faces one side of the positioning mechanism.
3. The trimmable stamping die of claim 1, wherein the trim shaping insert comprises a first side surface and a bottom surface, the first side surface intersects the bottom surface, the first side surface is a flat surface, at least a portion of the bottom surface has an arc-shaped surface, and the upper end of the lower die body is provided with a concave profile matching the arc-shaped surface.
4. The trimmable stamping die of claim 3, wherein the lower die trim insert includes a second side surface and a top surface, the second side surface intersecting the top surface, both the second side surface and the top surface being planar; after cutting the blank, the trimming and shaping insert continues to move downwards, and the first side surface of the trimming and shaping insert is in contact with the second side surface of the lower die trimming insert.
5. The trimmable stamping die of claim 1, wherein the lower die trimming insert is cuboid shaped;
and/or at least part of one side of the lower die trimming insert away from the positioning mechanism is not contacted with the lower die body.
6. The trimmable press die of claim 1 wherein the positioning mechanism includes a first positioning plate slidably connected to the lower die body and a second positioning plate connected to the first positioning plate for abutting an end of a blank.
7. The trimmable press die of claim 6 wherein the first locating plate and the second locating plate are perpendicular to each other;
and/or the positioning mechanism further comprises a driving part for driving the first positioning plate and the second positioning plate to move.
8. The trimmable press die of any of claims 1-7 wherein the drive mechanism is motor driven or air cylinder driven.
9. The trimmable stamping die of any one of claims 1-7, wherein the upper die is further provided with a swaging mechanism that can slide up and down along the upper die body.
10. The trimmable stamping die of claim 9, wherein the swaging mechanism includes a swaging core body slidably connected with the upper die body and a swaging core nitrogen spring fixed between the upper die body and the swaging core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220611529.7U CN216911756U (en) | 2022-03-21 | 2022-03-21 | Stamping die capable of trimming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220611529.7U CN216911756U (en) | 2022-03-21 | 2022-03-21 | Stamping die capable of trimming |
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| CN216911756U true CN216911756U (en) | 2022-07-08 |
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| CN202220611529.7U Active CN216911756U (en) | 2022-03-21 | 2022-03-21 | Stamping die capable of trimming |
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