CN219335608U - Hub double-sided spinning die - Google Patents
Hub double-sided spinning die Download PDFInfo
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- CN219335608U CN219335608U CN202222288747.4U CN202222288747U CN219335608U CN 219335608 U CN219335608 U CN 219335608U CN 202222288747 U CN202222288747 U CN 202222288747U CN 219335608 U CN219335608 U CN 219335608U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The utility model discloses a hub double-sided spinning die, which comprises an upper die connecting seat, an upper pressing die, a lower die connecting seat and a lower pressing die; the upper pressing die is fixedly connected to the upper die connecting seat; the upper pressing die is provided with an upper spinning forming surface; the lower pressing die is fixedly connected to the lower die connecting seat; the lower pressing die is provided with a first lower spinning forming surface; the lower pressing die is provided with a lower ejection die; the middle part of the lower ejection die is provided with a central positioning column; the center of the hub casting blank is sleeved on the center positioning column, so that the hub casting blank is positioned between the lower pressing die and the upper pressing die. According to the rotary forming die, the upper rotary forming surface and the first lower rotary forming surface are respectively arranged on the left side and the right side of the upper pressing die and the lower pressing die, and the hub casting blank is clamped by the upper pressing die and the lower pressing die, and the upper rotary forming surface and the first lower rotary forming surface on the left side and the right side, so that the hub casting blank can be subjected to rotary forming in the double-sided rotary forming die, the number of times in the rotary forming process is reduced, the rotary forming time is shortened, and the rotary forming efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of hub spinning dies, in particular to a hub double-sided spinning die.
Background
The spinning is to fix the flat plate or hollow blank on the mould of the spinning machine, and to press the blank with a spinning wheel or a rod while the blank rotates along with the main shaft of the bed, so as to generate local plastic deformation. The spinning can finish the complex geometric characteristics of various complex sheet metal parts, and is a special method for sheet metal forming. The geometric characteristics of complex sheet metal parts such as deep drawing, flanging, necking, bulging, hemming and the like can be finished by utilizing a spinning method, and the spinning processing has the advantages that equipment and a die are relatively simple (the special spinning machine can be replaced by a lathe), and besides a rotating body formed by a cylinder, a cone, a paraboloid or other various curves, the rotating body part with quite complex shape can be processed.
In the prior art, the hub casting and spinning process basically carries out single-sided spinning in the direction of an inner rim, but a hub casting blank subjected to single-sided spinning often cannot meet the process requirement, and the hub can meet the production process requirement after secondary spinning or multiple spinning, so that the hub spinning time is long, and the production efficiency of the hub is low.
Disclosure of Invention
Aiming at the problems of the background technology, the utility model aims to provide a hub double-sided spinning die which solves the problem of low hub casting spinning efficiency.
To achieve the purpose, the utility model adopts the following technical scheme:
a hub double-sided spinning die comprises an upper die connecting seat, an upper pressing die, a lower die connecting seat and a lower pressing die; the upper pressing die is fixedly connected to the bottom of the upper die connecting seat; upper spinning forming surfaces are respectively arranged on the left side and the right side of the upper pressing die; the lower pressing die is fixedly connected to the top of the lower die connecting seat; the left side and the right side of the lower pressing die are respectively provided with a first lower spinning forming surface; the top of the lower pressing die is provided with a lower ejection die; a central positioning column is arranged in the middle of the lower ejection die; the center of the hub casting blank is sleeved on the center positioning column, so that the hub casting blank is positioned between the lower pressing die and the upper pressing die.
Further, a detachable pressing connection die is arranged between the pressing die and the lower die connection seat; the left side of the bottom of the downward pressing connecting die is provided with a first connecting hole, and the right side of the downward pressing connecting die is provided with a first through hole; the left side of the bottom of the lower pressing die is provided with a second connecting hole, and the right side of the bottom of the lower pressing die is provided with a third connecting hole communicated with the first through hole; the distance between the second connecting hole and the central positioning column is equal to the distance between the first connecting hole and the central positioning column; the left side and the right side of the pressing connection die are respectively provided with a second pressing forming surface; when the lower pressing connecting die is arranged between the lower pressing die and the lower die connecting seat, the second lower spinning forming surface and the first lower spinning forming surface are spliced into a lower die spinning forming surface, and the lower die spinning forming surface and the upper spinning forming surface are symmetrically arranged with the hub casting blank.
More preferably, the left side of the bottom of the lower pressing die is respectively provided with a concave clamping part; the two sides of the top of the downward pressing connecting die are respectively provided with a convex clamping part; the protruding clamping part is clamped on the concave clamping part, so that the pressing connection die can be preinstalled at the bottom of the pressing die.
More preferably, a central limiting sleeve is arranged in the middle of the upper pressing die, and a central limiting hole is arranged in the central limiting sleeve; when the upper die and the lower die are assembled, the central positioning column is clamped in the central limiting hole.
Further, a concave cavity is formed in the middle of the lower ejection die, a positioning hole is formed in the middle of the concave cavity, and a first fixing hole is formed in one side of the positioning hole; the bottom of the central positioning column is provided with a convex positioning part clamped with the positioning hole; the left side and the right side of the protruding locating part are provided with second fixing holes communicated with the first fixing holes.
More preferably, the bottom of the upper pressing die is provided with an ejection die mounting cavity and an upper ejection die; the top of the upper ejection die is connected with the top surface of the ejection die mounting cavity through a spring.
More preferably, the bottom of the upper pressing die is also provided with an ejection limiting ring; the ejection limiting ring is fixedly connected with the top surface of the ejection die mounting cavity through a bolt, so that the ejection limiting ring is fixedly mounted in the ejection die mounting cavity; the upper ejection die is positioned between the ejection limiting ring and the ejection die mounting cavity; a first protruding limiting part is arranged at the bottom of the ejection limiting ring, and a movable gap L is reserved between the top of the first protruding limiting part and the top surface of the ejection die mounting cavity; the top of the upper ejection die is provided with a second protruding limiting part, and the second protruding limiting part can move up and down in the movable gap L through the spring; when the second protruding limiting part is in contact with the first protruding limiting part, the bottom surface of the upper ejection die is positioned below the bottom surface of the upper pressing die; when the second protruding limiting part is in contact with the top surface of the ejection die mounting cavity, the bottom surface of the upper ejection die is flush with the bottom surface of the upper pressing die or is positioned above the upper pressing die.
Compared with the prior art, one of the technical schemes has the following beneficial effects:
according to the rotary forming die, the upper rotary forming surface and the first lower rotary forming surface are respectively arranged on the left side and the right side of the upper pressing die and the lower pressing die, the hub casting blank passes through the die clamping of the upper pressing die and the lower pressing die, and the upper rotary forming surface and the first lower rotary forming surface on the left side and the right side, so that the hub casting blank can be subjected to rotary forming in the double-sided rotary forming die, the number of times in the rotary forming process is reduced, the rotary forming time is shortened, and the rotary forming efficiency is improved.
Drawings
FIG. 1 is a schematic view of a double-sided spinning die according to an embodiment of the utility model;
FIG. 2 is a schematic view of the structure of a press-down connection die according to an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure of a stamper according to an embodiment of the present utility model;
FIG. 4 is a schematic view of the structure of a center stop collar according to one embodiment of the present utility model;
FIG. 5 is a schematic view of a center pillar according to an embodiment of the present utility model;
FIG. 6 is a schematic view of the structure of a lower ejector die according to one embodiment of the present utility model;
FIG. 7 is a schematic view of the structure of an upper die according to an embodiment of the present utility model;
FIG. 8 is a schematic diagram of the structure of an upper ejector die after demolding in accordance with one embodiment of the present utility model;
fig. 9 is a schematic view showing the structure of an upper ejector die when the upper die and the lower die are clamped in accordance with an embodiment of the present utility model.
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.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include one or more such feature.
In a preferred embodiment of the present application, as shown in fig. 1 to 9, a hub double-sided spinning die comprises an upper die connecting seat 1, an upper die 2, a lower die connecting seat 3 and a lower die 4; the upper pressing die 2 is fixedly connected to the bottom of the upper die connecting seat 1; the left side and the right side of the upper pressing die 2 are respectively provided with an upper spinning forming surface 21; the lower die 4 is fixedly connected to the top of the lower die connecting seat 3; the left side and the right side of the lower pressing die 4 are respectively provided with a first lower spinning forming surface 41; a lower ejection die 42 is arranged at the top of the lower pressing die 4; a central positioning column 43 is arranged in the middle of the lower ejection die 42; the center of the hub casting blank is sleeved on the center positioning column 43, so that the hub casting blank is positioned between the lower die 4 and the upper die 2.
In this embodiment, the upper die 2 and the lower die 4 are fixedly connected to the upper die connecting base 1 and the lower die connecting base 3, respectively, and the upper die connecting base 1 and the lower die connecting base 3 are connected to a machine. Further, the center of the hub casting blank is sleeved on the center positioning column 43, so that the hub casting blank is uniformly processed in the spinning forming process. After the hub casting blank is sleeved on the central positioning column 43, the upper die 2 and the lower die 4 are closed under the drive of a machine, and then are rotated at a high speed under the drive of the machine. Thereby the hub casting blank is subjected to spinning forming. The left side and the right side of the upper pressing die 2 and the lower pressing die 4 are respectively provided with an upper spinning forming surface 21 and a first lower spinning forming surface 41, and the hub casting blank passes through the die clamping of the upper pressing die 2 and the lower pressing die 4 and the upper spinning forming surface 21 and the first lower spinning forming surface 41 on the left side and the right side, so that the hub casting blank can be subjected to rotary forming in the double-sided spinning die, thereby reducing the times in the spinning process, reducing the time of spinning forming and improving the efficiency of spinning forming.
Further, a detachable pressing connection die 6 is arranged between the pressing die 4 and the lower die connection seat 3; a first connecting hole 61 is formed in the left side of the bottom of the pressing connecting die 6, and a first through hole 62 is formed in the right side of the pressing connecting die 6; the bottom left side of the lower pressing die 4 is provided with a second connecting hole 44, and the bottom right side of the lower pressing die 4 is provided with a third connecting hole 45 communicated with the first through hole 62; the distance between the second connecting hole 44 and the center positioning column 43 is equal to the distance between the first connecting hole 61 and the center positioning column 43; the left side and the right side of the pressing connection die 6 are respectively provided with a second lower spinning forming surface 63; when the pressing connection die 6 is installed between the pressing die 4 and the lower die connection seat 3, the second lower spinning forming surface 63 and the first lower spinning forming surface 41 are combined to form a lower die spinning forming surface 7, and the lower die spinning forming surface 7 and the upper spinning forming surface 21 are symmetrically arranged with the hub casting blank.
As shown in fig. 2 and 3, in the actual hub spinning process, when spinning rims of hubs having different widths, the original upper press mold and the lower press mold 4 are removed from the upper mold connecting seat 1 and the lower mold connecting seat 3, and then a new upper press mold 2 and the new lower press mold 4 are installed such that the upper spinning molding surface 21 and the lower press mold 4 of the new upper press mold 2 and the first lower spinning molding surface 41 conform to the widths of the rims of the hubs. However, the upper die 2 and the lower die 4 are thus newly detached, and then a new upper die 2 and lower die 4 are installed, requiring a certain replacement time, resulting in a low production efficiency. Thus, in the present embodiment, the upper spin-formed surface 21 of the upper die 2 is longer than the first spin-formed surface of the lower die 4, and the rim width of the hub is equal to the length of the first spin-formed surface of the lower die 4. When the rim of the hub formed by spinning is greater than the length of the first spinning forming surface of the lower die 4 and less than the length of the upper spinning forming surface 21 of the upper die, the embodiment adds a lower connecting die 6 between the lower die 4 and the connecting seat of the lower die 4, so that the second lower spinning forming surface 63 of the lower connecting die 6 and the first lower spinning forming surface 41 of the lower die 4 are spliced into a lower die spinning forming surface 7, and the length of the lower die spinning forming surface 7 and the length of the upper spinning forming surface 21 are equal, so that the spinning die can spin a wider rim. Therefore, in this embodiment, when the rim width of the hub is changed relatively little, a lower die connecting die is added to the lower die 4, so that the first lower spinning forming surface 41 and the second lower spinning forming surface 63 of the lower die 4 are combined into a longer lower die spinning forming surface 7, and the rim with a larger width is sequentially processed, without completely disassembling the upper die 2 and the lower die 4, thereby reducing the replacement time and improving the production efficiency of the hub. It should be noted that, when the rim width is completely larger than the upper spin forming surface 21 of the upper die 2, it is still necessary to detach the upper die 2 and the lower die 4, and then install the upper die 2 and the lower die 4 of the appropriate size.
Further, in this embodiment, when the pressing connection mold 6 is not yet added, the lower mold connection seat 3 is connected to the second connection hole 44 and the third connection hole 45 by a connection member such as a bolt, so that the pressing mold 4 is fixedly mounted on the top of the lower mold connection seat 3. When the pressing connection die 6 is additionally arranged, the lower die connection seat 3 sequentially penetrates through the first through hole 62 and the third connection hole 45 through connecting pieces such as bolts, so that the pressing die 4, the pressing connection die 6 and the lower die connection seat 3 are connected into a whole, then the lower die connection seat 3 is connected with the first connection hole 61 through bolts, and connection between the pressing connection die 6 and the lower die connection seat 3 is stabilized. The arrangement ensures that the lower pressing die 4, the lower pressing connecting die 6 and the lower die connecting seat 3 are convenient to assemble and disassemble, and the assembly efficiency is improved.
More preferably, the bottom left side of the lower die 4 is provided with a concave clamping part 46 respectively; the two sides of the top of the downward pressing connecting die 6 are respectively provided with a convex clamping part 64; by snap-fitting the convex snap-fitting portion 64 to the concave snap-fitting portion 46, the press-down connecting die 6 can be pre-mounted to the bottom of the press-down die 4. The protruding clamping portion 64 and the concave clamping portion 46 can be used for clamping, so that the pressing connection die 6 can be preinstalled on the top of the pressing die 4, the pressing connection die 6 is conveniently and fixedly connected with the pressing die 4 through bolts, the comparison between the pressing connection die 6 and the pressing die 4 is reduced, and the installation efficiency is improved.
More preferably, a central limit sleeve 22 is arranged in the middle of the upper pressing die 2, and a central limit hole 221 is arranged in the central limit sleeve 22; when the upper die 2 and the lower die 4 are assembled, the central positioning column 43 is clamped in the central limiting hole 221. As shown in fig. 4, when the upper die 2 and the lower die 4 are assembled, the top of the central positioning column 43 is clamped in the central limiting hole 221, so that the center of the upper die 2 and the center of the lower die 4 are ensured to be on the same straight line, the hub casting blank is uniformly spun on both sides, and the hub spinning forming quality is ensured.
Further, a concave cavity 421 is provided in the middle of the lower ejection die 42, a positioning hole is provided in the middle of the concave cavity 421, and a first fixing hole 423 is provided on one side of the positioning hole; the bottom of the central positioning column 43 is provided with a convex positioning part 431 clamped with the positioning hole; the left and right sides of the protrusion positioning portion 431 are provided with second fixing holes 432 communicating with the first fixing holes 423. As shown in fig. 5 and 6, since the positioning hole is located at the center of the lower ejector die 42, the central positioning column 43 is ensured to be located at the center of the lower ejector die 42 by only clamping the protruding positioning portion 431 of the central positioning column 43 in the positioning hole, and then the central positioning column 43 is ensured to be fixed at the center of the lower ejector die 42 by sequentially connecting the first fixing hole 423 and the second fixing hole 432 via the connecting member such as the bolt.
More preferably, the bottom of the upper pressing die 2 is provided with an ejection die mounting cavity 20 and an upper ejection die 23; the top of the upper ejection die 23 is connected with the top surface of the ejection die mounting cavity 20 through a spring 24.
As shown in fig. 7 to 9, an upper ejection die 23 is fixedly connected to the ejection die mounting cavity 20 by a spring 24, and the upper ejection die 23 is used for enabling the hub to be quickly separated from the upper die 2 after the hub is spin-formed. Specifically, before the mold is closed, the bottom surface of the upper ejector 23 protrudes from the top surface of the upper die 2, and when the upper die 2 and the lower die 4 are closed, the upper ejector 23 is pressed by the lower die 4, and the upper ejector 23 is retracted into the ejection mounting cavity. When spinning the hub, after the upper die 2 and the lower die 4 are separated, the upper ejection die 23 is not extruded by the lower die 4, the springs 24 are restored, so that the upper ejection die 23 is pushed downwards, and the upper ejection die 23 pushes the molded hub to move downwards, so that the hub is separated from the upper die 2, and the demolding speed of the hub is improved.
More preferably, the bottom of the upper pressing die 2 is also provided with an ejection limiting ring 25; the ejection limiting ring 25 is fixedly connected with the top surface of the ejection die mounting cavity 20 through bolts, so that the ejection limiting ring 25 is fixedly mounted in the ejection die mounting cavity 20; the upper ejection die 23 is positioned between the ejection limiting ring 25 and the ejection die mounting cavity 20; a first protruding limit 251 is arranged at the bottom of the ejection limit ring 25, and a movable gap L is reserved between the top of the first protruding limit and the top surface of the ejection die mounting cavity 20; the top of the upper ejection die 23 is provided with a second protruding limiting part 231, and the second protruding limiting part 231 can move up and down in the movable gap L through the expansion and contraction of the spring 24; when the second protruding stop portion 231 is in contact with the first protruding stop portion 251, the bottom surface of the upper ejection die 23 is located below the bottom surface of the upper die 2; when the second protruding stop 231 contacts with the top surface of the ejector mounting cavity 20, the bottom surface of the upper ejector 23 is flush with the bottom surface of the upper die 2 or above the upper die 2. The installation process of the upper ejection die 23 is as follows: the upper ejection die 23 is firstly installed in the ejection die installation cavity 20 through a spring 24, then the ejection limiting ring 25 is sleeved in the upper ejection die 23, and the ejection limiting ring 25 is fixedly connected with the upper pressing die 2 through a connecting piece such as a bolt, so that the upper ejection die 23 is limitedly installed between the ejection limiting ring 25 and the upper pressing die 2, the purpose of arrangement ensures that the spring 24 can only stretch in the vertical direction, so that the spring 24 only drives the upper ejection die 23 to move in the vertical direction and not shake left and right to collide with the upper pressing die 2, abrasion of the upper pressing die 2 and the upper ejection die 23 is reduced, and the service life between the upper pressing die 2 and the upper ejection die 23 is prolonged. More preferably, a first protruding limit 251 is further provided at the bottom of the ejector retainer ring 25, and a movable gap LL is provided between the first protruding limit 251 and the top surface of the ejector mounting cavity 20, and the second protruding limit 231 of the upper ejector 23 is only movable in the movable gap LL, so as to limit the downward moving distance of the upper ejector 23. Because the upper ejection die 23 will pull the spring 24 downward under the action of gravity without passing the limit of the first protruding limit 251, so that the spring 24 is excessively pulled, and the spring 24 is lost, the upper ejection die 23 is prevented from excessively pulling the spring 24 by the limit between the first protruding limit 251 and the second protruding limit 231, and the spring 24 is prevented from being damaged, thereby ensuring that the upper die 2 can smoothly demold the hub.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (7)
1. The hub double-sided spinning die is characterized by comprising an upper die connecting seat, an upper pressing die, a lower die connecting seat and a lower pressing die;
the upper pressing die is fixedly connected to the bottom of the upper die connecting seat;
upper spinning forming surfaces are respectively arranged on the left side and the right side of the upper pressing die;
the lower pressing die is fixedly connected to the top of the lower die connecting seat;
the left side and the right side of the lower pressing die are respectively provided with a first lower spinning forming surface;
the top of the lower pressing die is provided with a lower ejection die;
a central positioning column is arranged in the middle of the lower ejection die;
the center of the hub casting blank is sleeved on the center positioning column, so that the hub casting blank is positioned between the lower pressing die and the upper pressing die.
2. The hub double-sided spinning die set according to claim 1, wherein a detachable pressing connection die is arranged between the pressing die and the lower die connection seat;
the left side of the bottom of the downward pressing connecting die is provided with a first connecting hole, and the right side of the downward pressing connecting die is provided with a first through hole;
the left side of the bottom of the lower pressing die is provided with a second connecting hole, and the right side of the bottom of the lower pressing die is provided with a third connecting hole communicated with the first through hole;
the distance between the second connecting hole and the central positioning column is equal to the distance between the first connecting hole and the central positioning column;
the left side and the right side of the pressing connection die are respectively provided with a second pressing forming surface;
when the lower pressing connecting die is arranged between the lower pressing die and the lower die connecting seat, the second lower spinning forming surface and the first lower spinning forming surface are spliced into a lower die spinning forming surface, and the lower die spinning forming surface and the upper spinning forming surface are symmetrically arranged with the hub casting blank.
3. The hub double-sided spinning die according to claim 2, wherein the bottom left side of the lower die is provided with a concave clamping part respectively;
the two sides of the top of the downward pressing connecting die are respectively provided with a convex clamping part;
the protruding clamping part is clamped on the concave clamping part, so that the pressing connection die can be preinstalled at the bottom of the pressing die.
4. The hub double-sided spinning die of claim 1, wherein a central limit sleeve is arranged in the middle of the upper pressing die, and a central limit hole is arranged in the central limit sleeve;
when the upper die and the lower die are assembled, the central positioning column is clamped in the central limiting hole.
5. The hub double-sided spinning die of claim 1, wherein a concave cavity is formed in the middle of the lower ejection die, a positioning hole is formed in the middle of the concave cavity, and a first fixing hole is formed in one side of the positioning hole;
the bottom of the central positioning column is provided with a convex positioning part clamped with the positioning hole;
the left side and the right side of the protruding locating part are provided with second fixing holes communicated with the first fixing holes.
6. The hub double-sided spinning die according to claim 1, wherein an ejection die mounting cavity and an upper ejection die are arranged at the bottom of the upper die;
the top of the upper ejection die is connected with the top surface of the ejection die mounting cavity through a spring.
7. The hub double-sided spinning die of claim 6, wherein the bottom of the upper die is further provided with an ejection limiting ring;
the ejection limiting ring is fixedly connected with the top surface of the ejection die mounting cavity through a bolt, so that the ejection limiting ring is fixedly mounted in the ejection die mounting cavity;
the upper ejection die is positioned between the ejection limiting ring and the ejection die mounting cavity;
a first protruding limiting part is arranged at the bottom of the ejection limiting ring, and a movable gap L is reserved between the top of the first protruding limiting part and the top surface of the ejection die mounting cavity;
the top of the upper ejection die is provided with a second protruding limiting part, and the second protruding limiting part can move up and down in the movable gap L through the spring;
when the second protruding limiting part is in contact with the first protruding limiting part, the bottom surface of the upper ejection die is positioned below the bottom surface of the upper pressing die;
when the second protruding limiting part is in contact with the top surface of the ejection die mounting cavity, the bottom surface of the upper ejection die is flush with the bottom surface of the upper pressing die or is positioned above the upper pressing die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222288747.4U CN219335608U (en) | 2022-08-30 | 2022-08-30 | Hub double-sided spinning die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222288747.4U CN219335608U (en) | 2022-08-30 | 2022-08-30 | Hub double-sided spinning die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219335608U true CN219335608U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222288747.4U Active CN219335608U (en) | 2022-08-30 | 2022-08-30 | Hub double-sided spinning die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219335608U (en) |
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2022
- 2022-08-30 CN CN202222288747.4U patent/CN219335608U/en active Active
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