CN220144472U - Spinning mould with adjustable wheel width - Google Patents
Spinning mould with adjustable wheel width Download PDFInfo
- Publication number
- CN220144472U CN220144472U CN202321590719.6U CN202321590719U CN220144472U CN 220144472 U CN220144472 U CN 220144472U CN 202321590719 U CN202321590719 U CN 202321590719U CN 220144472 U CN220144472 U CN 220144472U
- Authority
- CN
- China
- Prior art keywords
- groups
- shell
- top end
- supporting
- air cylinders
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 34
- 230000003028 elevating effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model relates to the technical field of spinning dies, in particular to a spinning die with adjustable wheel width, which improves the convenience of adjusting and fixing the die according to blanks with different widths; the device comprises a base and a lower die, wherein the lower die is rotatably arranged at the top end of the base through an external driving assembly; still include elevating gear, power device, casing, multiunit supporting shoe and multiunit fixed plate, the base top is provided with elevating gear, the casing passes through elevating gear and reciprocates and set up directly over the bed die to the casing passes through outside drive assembly rotation, and the casing bottom is provided with multiunit through-hole, multiunit supporting shoe slidable mounting respectively in multiunit through-hole department, and power device sets up on the casing, and power device is used for driving multiunit supporting shoe and slides, and the top of multiunit fixed plate is connected with multiunit supporting shoe bottom respectively.
Description
Technical Field
The utility model relates to the technical field of spinning dies, in particular to a spinning die with an adjustable wheel width.
Background
Spinning is a special forming method, and the spinning method can be used for completing the processes of drawing, flanging, necking, bulging, curling and the like of various rotating bodies with different shapes, so that various axisymmetric rotating body parts can be manufactured, at present, when spinning is carried out on a wheel hub, due to different widths of the wheel hub, a die is required to be adaptively adjusted according to the widths of the wheel hub, as in the patent of the utility model with the prior art authorized publication number of CN201558902U, the die consists of a spinning upper die, a spinning lower die and the like, a movable spinning lower die movable block is designed on the spinning lower die, and the spinning die is protruded, meanwhile, the movable block is used as a support of an inner cavity in the spinning process, and is contracted under the action of external force after spinning forming, so that the demolding is realized.
However, when the die is used, the upper die is inconvenient to adjust the width according to the wheels when the wheels with different widths are subjected to spinning processing, so that the convenience of fixing the wheels by the upper die is reduced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the wheel width adjustable spinning die which improves the convenience of adjusting and fixing the die according to blanks with different widths.
The utility model relates to a spinning die with adjustable wheel width, which comprises a base and a lower die, wherein the lower die is rotatably arranged at the top end of the base through an external driving component; the lifting device is arranged at the top end of the base, the shell is arranged right above the lower die through the lifting device in a vertical moving mode, the shell rotates through an external driving assembly, a plurality of groups of through holes are formed in the bottom end of the shell, the plurality of groups of supporting blocks are respectively and slidably mounted at the plurality of groups of through holes, the power device is arranged on the shell and used for driving the plurality of groups of supporting blocks to slide, and the top ends of the plurality of groups of fixing plates are respectively connected with the bottom ends of the plurality of groups of supporting blocks; the wheel hub blank is sleeved on the upper portion of the outer side wall of the lower die, the shell is driven to move downwards through the lifting device to approach the lower die, the multiple groups of fixing plates are all moved to the inside of the blank, the multiple groups of supporting blocks are driven to move away from each other through the power device, the multiple groups of supporting blocks drive the multiple groups of fixing plates to move away from each other, the multiple groups of fixing plates are fixed in expansion mode on the inner side wall of the blank, when the outer driving assembly drives the lower die to rotate synchronously with the shell, the shell drives the blank to rotate, spinning processing is conducted on the blank on the lower die, and convenience in adjusting and fixing of the die according to blanks with different widths is improved.
Preferably, the power device comprises a barrel, an annular guide rail, a motor, a stud, a sliding block and a plurality of groups of supporting arms, wherein the bottom end of the barrel is rotatably arranged on the annular guide rail, the bottom end of the annular guide rail is connected with the top end of the shell, the motor is arranged at the top end of the shell, the upper end and the lower end of the stud are rotatably arranged on the inner side wall of the shell, the top end of the stud is concentrically connected with the motor, the sliding block is matched with the stud to be screwed on the outer side wall of the stud, the top ends of the plurality of groups of supporting arms are rotatably arranged on the outer side wall of the sliding block, and the bottom ends of the plurality of groups of supporting arms are respectively rotatably connected with the outer side wall of the plurality of groups of supporting blocks; the control motor drives the stud to rotate, the slide block is driven to move upwards or downwards after the stud rotates, the slide block drives the multiple groups of support blocks to move away from each other through the multiple groups of support arms after moving downwards, the multiple groups of support blocks drive the multiple groups of fixing plates to fix wider wheels, and after the slide block moves upwards, the slide block drives the multiple groups of support blocks to move close to each other through the multiple groups of support arms, so that the multiple groups of fixing plates are convenient to fix narrower wheels, and the use convenience of the die is improved.
Preferably, the device further comprises a plurality of groups of first cylinders, a supporting table, a plurality of groups of second cylinders and a plurality of groups of supporting plates, wherein the fixed ends of the plurality of groups of first cylinders are all arranged at the top end of the base, the supporting table is arranged at the moving ends of the plurality of groups of first cylinders, the plurality of groups of second cylinders are circumferentially arranged at the top end of the supporting table, and the plurality of groups of supporting plates are respectively arranged at the moving ends of the plurality of groups of second cylinders; the multiple groups of second air cylinders push the multiple groups of support plates to be close to the outer side wall of the lower die in an initial state, the multiple groups of first air cylinders drive the multiple groups of support tables to move upwards, when the blank is sleeved on the upper portion of the outer side wall of the lower die, the bottom end of the blank is supported through the multiple groups of support plates, the blank is prevented from sliding down to the bottom of the lower die, and after the upper portion of the blank is expanded and fixed through the multiple groups of fixing plates, the multiple groups of first air cylinders drive the support tables to move downwards to give way, so that the blank spinning processing is facilitated.
Preferably, the lifting device comprises two groups of connecting frames and two groups of third air cylinders, the two groups of connecting frames are respectively arranged at the left end and the right end of the cylinder body, the two groups of third air cylinders are respectively arranged at the left end and the right end of the top end of the base, and the two groups of connecting frames are respectively arranged at the moving ends of the two groups of third air cylinders; the telescopic length of the movable ends of the two groups of third cylinders is controlled, so that the two groups of third cylinders drive the cylinder body to move up and down through the two groups of connecting frames, and the convenience of lifting and moving of the shell is improved.
Preferably, the motor also comprises an electromagnetic slip ring and a bracket, wherein the electromagnetic slip ring is arranged in the middle of the inner side wall of the cylinder, the bracket is arranged at the top end of the shell, the rotating end of the electromagnetic slip ring is connected with the top end of the bracket, and the electromagnetic slip ring is electrically connected with the motor; the shell rotates to drive the support to rotate, and the support rotates to drive the electromagnetic slip ring rotating end to rotate, so that the electromagnetic slip ring is convenient to supply power to the motor.
Preferably, the device also comprises a plurality of groups of guide blocks, wherein the plurality of groups of guide blocks are arranged on the inner side wall of the shell, and the plurality of groups of support blocks are respectively and slidably arranged on the plurality of groups of guide blocks; the sliding stability of the multiple groups of supporting blocks is improved.
Preferably, the outer side walls of the multiple groups of fixing plates are provided with anti-skid patterns; the stability of the multiple groups of fixing plates to blank fixation is improved.
Compared with the prior art, the utility model has the beneficial effects that: the wheel hub blank is sleeved on the upper portion of the outer side wall of the lower die, the shell is driven to move downwards through the lifting device to approach the lower die, the multiple groups of fixing plates are all moved to the inside of the blank, the multiple groups of supporting blocks are driven to move away from each other through the power device, the multiple groups of supporting blocks drive the multiple groups of fixing plates to move away from each other, the multiple groups of fixing plates are fixed in expansion mode on the inner side wall of the blank, when the outer driving assembly drives the lower die to rotate synchronously with the shell, the shell drives the blank to rotate, spinning processing is conducted on the blank on the lower die, and convenience in adjusting and fixing of the die according to blanks with different widths is improved.
Drawings
FIG. 1 is a schematic illustration of an axially measured structure of the present utility model;
FIG. 2 is a schematic diagram of an axial structure of a cylinder connected to a connecting frame or the like;
FIG. 3 is a schematic illustration of a partial structure of a housing coupled to a stud or the like;
FIG. 4 is a schematic illustration of a partial structure of a support block and a fixed plate connected to each other;
FIG. 5 is a schematic view of a partial structure of a first cylinder connected to a support table or the like;
the reference numerals in the drawings: 1. a base; 2. a lower die; 3. a housing; 4. a support block; 5. a fixing plate; 6. a cylinder; 7. an annular guide rail; 8. a motor; 9. a stud; 10. a slide block; 11. a support arm; 12. a first cylinder; 13. a support table; 14. a second cylinder; 15. a support plate; 16. a connecting frame; 17. a third cylinder; 18. an electromagnetic slip ring; 19. a bracket; 20. and a guide block.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
As shown in fig. 1 to 5, the spinning die with adjustable wheel width of the utility model comprises a base 1 and a lower die 2, wherein the lower die 2 is rotatably arranged at the top end of the base 1 through an external driving component; the automatic lifting device is arranged at the top end of the base 1, the shell 3 is arranged right above the lower die 2 through the lifting device in a vertical moving mode, the shell 3 rotates through an external driving assembly, a plurality of groups of through holes are formed in the bottom end of the shell 3, the plurality of groups of supporting blocks 4 are respectively and slidably arranged at the plurality of groups of through holes, the power device is arranged on the shell 3 and is used for driving the plurality of groups of supporting blocks 4 to slide, and the top ends of the plurality of groups of fixing plates 5 are respectively connected with the bottom ends of the plurality of groups of supporting blocks 4;
as shown in fig. 3, the power device comprises a cylinder 6, an annular guide rail 7, a motor 8, a stud 9, a sliding block 10 and a plurality of groups of supporting arms 11, wherein the bottom end of the cylinder 6 is rotatably arranged on the annular guide rail 7, the bottom end of the annular guide rail 7 is connected with the top end of the shell 3, the motor 8 is arranged at the top end of the shell 3, the upper and lower ends of the stud 9 are rotatably arranged on the inner side wall of the shell 3, the top end of the stud 9 is concentrically connected with the motor 8, the sliding block 10 is matched with the threaded connection on the outer side wall of the stud 9, the top ends of the plurality of groups of supporting arms 11 are rotatably arranged on the outer side wall of the sliding block 10, and the bottom ends of the plurality of groups of supporting arms 11 are respectively rotatably connected with the outer side walls of the plurality of groups of supporting blocks 4;
in this embodiment, with wheel hub blank suit in bed die 2 lateral wall upper portion, afterwards, drive casing 3 downwardly moving and bed die 2 to be close to through elevating gear, multiunit fixed plate 5 all moves to the blank inside this moment, afterwards, drive multiunit supporting shoe 4 and keep away from each other through power device and remove, make multiunit supporting shoe 4 drive multiunit fixed plate 5 keep away from each other and remove, thereby make multiunit fixed plate 5 with the expansion of blank inside wall fixed, when outside drive assembly drives bed die 2 and casing 3 synchronous revolution, casing 3 drives the blank rotation, thereby be convenient for carry out spinning processing to the blank on bed die 2, improve the fixed convenience of mould according to different width blank regulation.
Example 2
As shown in fig. 1 to 5, the spinning die with adjustable wheel width of the utility model comprises a base 1 and a lower die 2, wherein the lower die 2 is rotatably arranged at the top end of the base 1 through an external driving component; the automatic lifting device is arranged at the top end of the base 1, the shell 3 is arranged right above the lower die 2 through the lifting device in a vertical moving mode, the shell 3 rotates through an external driving assembly, a plurality of groups of through holes are formed in the bottom end of the shell 3, the plurality of groups of supporting blocks 4 are respectively and slidably arranged at the plurality of groups of through holes, the power device is arranged on the shell 3 and is used for driving the plurality of groups of supporting blocks 4 to slide, and the top ends of the plurality of groups of fixing plates 5 are respectively connected with the bottom ends of the plurality of groups of supporting blocks 4;
as shown in fig. 3, the power device comprises a cylinder 6, an annular guide rail 7, a motor 8, a stud 9, a sliding block 10 and a plurality of groups of supporting arms 11, wherein the bottom end of the cylinder 6 is rotatably arranged on the annular guide rail 7, the bottom end of the annular guide rail 7 is connected with the top end of the shell 3, the motor 8 is arranged at the top end of the shell 3, the upper and lower ends of the stud 9 are rotatably arranged on the inner side wall of the shell 3, the top end of the stud 9 is concentrically connected with the motor 8, the sliding block 10 is matched with the threaded connection on the outer side wall of the stud 9, the top ends of the plurality of groups of supporting arms 11 are rotatably arranged on the outer side wall of the sliding block 10, and the bottom ends of the plurality of groups of supporting arms 11 are respectively rotatably connected with the outer side walls of the plurality of groups of supporting blocks 4;
as shown in fig. 2, the device further comprises a plurality of groups of first air cylinders 12, a supporting table 13, a plurality of groups of second air cylinders 14 and a plurality of groups of supporting plates 15, wherein fixed ends of the plurality of groups of first air cylinders 12 are all arranged at the top end of the base 1, the supporting table 13 is arranged on the moving ends of the plurality of groups of first air cylinders 12, the plurality of groups of second air cylinders 14 are circumferentially arranged at the top end of the supporting table 13, and the plurality of groups of supporting plates 15 are respectively arranged on the moving ends of the plurality of groups of second air cylinders 14;
as shown in fig. 2, the lifting device includes two sets of connecting frames 16 and two sets of third cylinders 17, the two sets of connecting frames 16 are respectively installed at the left and right ends of the cylinder body 6, the two sets of third cylinders 17 are respectively installed at the left and right parts of the top end of the base 1, and the two sets of connecting frames 16 are respectively installed at the moving ends of the two sets of third cylinders 17;
as shown in fig. 3, the electromagnetic slip ring device further comprises an electromagnetic slip ring 18 and a bracket 19, wherein the electromagnetic slip ring 18 is arranged in the middle of the inner side wall of the cylinder 6, the bracket 19 is arranged at the top end of the shell 3, the rotating end of the electromagnetic slip ring 18 is connected with the top end of the bracket 19, and the electromagnetic slip ring 18 is electrically connected with the motor 8;
as shown in fig. 3, the device further comprises a plurality of groups of guide blocks 20, wherein the plurality of groups of guide blocks 20 are all arranged on the inner side wall of the shell 3, and the plurality of groups of support blocks 4 are respectively and slidably arranged on the plurality of groups of guide blocks 20;
as shown in fig. 4, the outer side walls of the multiple groups of fixing plates 5 are provided with anti-skid patterns;
in this embodiment, the stud 9 is driven to rotate by the control motor 8, the slide block 10 is driven to move upwards or downwards after the stud 9 rotates, the slide block 10 is driven to move away from each other by the plurality of groups of support arms 11 after moving downwards, the plurality of groups of support blocks 4 are driven to fix wider wheels by the plurality of groups of fixing plates 5, when the slide block 10 moves upwards, the plurality of groups of support blocks 4 are driven to move close to each other by the plurality of groups of support arms 11 by the slide block 10, so that the plurality of groups of fixing plates 5 fix narrower wheels, the convenience of using a die is improved, the plurality of groups of second air cylinders 14 push the plurality of groups of support plates 15 to be close to the outer side wall of the lower die 2 in an initial state, the plurality of groups of first air cylinders 12 drive the plurality of support tables 13 to move upwards, when a blank is sleeved on the upper part of the outer side wall of the lower die 2, the blank is supported by the plurality of groups of support plates 15, the blank is prevented from sliding downwards to the bottom of the lower die 2, and after the upper part of the blank is expanded and fixed by the plurality of groups of fixing plates 5, the plurality of first air cylinders are driven to move the support tables 13 downwards, so that spinning of the blank is facilitated.
The wheel hub blank is sleeved on the upper part of the outer side wall of the lower die 2 during operation, the shell 3 is driven to move downwards to be matched with the lower die 2 through the lifting device, the multiple groups of fixing plates 5 are all moved into the blank, the multiple groups of supporting blocks 4 are driven to move away from each other through the power device, the multiple groups of supporting blocks 4 drive the multiple groups of fixing plates 5 to move away from each other, the inner side wall of the blank is expanded and fixed through the multiple groups of fixing plates 5, and when the lower die 2 and the shell 3 are driven to rotate synchronously by the external driving assembly, the shell 3 drives the blank to rotate, so that the blank is convenient to spin on the lower die 2.
The motor 8, the first cylinder 12, the second cylinder 14, the third cylinder 17 and the electromagnetic slip ring 18 of the spinning die with adjustable wheel width are purchased in the market, and a person skilled in the art only needs to install and operate according to the attached use instruction without creative labor of the person skilled in the art.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (7)
1. The spinning die with the adjustable wheel width comprises a base (1) and a lower die (2), wherein the lower die (2) is rotatably arranged at the top end of the base (1) through an external driving component; the automatic lifting device is characterized by further comprising a lifting device, a power device, a shell (3), a plurality of groups of supporting blocks (4) and a plurality of groups of fixing plates (5), wherein the lifting device is arranged at the top end of the base (1), the shell (3) is arranged right above the lower die (2) through the lifting device in a vertical moving mode, the shell (3) is rotated through an external driving assembly, a plurality of groups of through holes are formed in the bottom end of the shell (3), the plurality of groups of supporting blocks (4) are respectively and slidably mounted at the plurality of groups of through holes, the power device is arranged on the shell (3) and is used for driving the plurality of groups of supporting blocks (4) to slide, and the top ends of the plurality of groups of fixing plates (5) are respectively connected with the bottom ends of the plurality of groups of supporting blocks (4).
2. The spinning die with adjustable wheel width according to claim 1, wherein the power device comprises a barrel (6), an annular guide rail (7), a motor (8), a stud (9), a sliding block (10) and a plurality of groups of supporting arms (11), the bottom end of the barrel (6) is rotatably mounted on the annular guide rail (7), the bottom end of the annular guide rail (7) is connected with the top end of the shell (3), the motor (8) is mounted on the top end of the shell (3), the upper end and the lower end of the stud (9) are rotatably mounted on the inner side wall of the shell (3), the top end of the stud (9) is concentrically connected with the motor (8), the sliding block (10) is matched with the outer side wall of the stud (9), the top ends of the groups of the supporting arms (11) are rotatably mounted on the outer side wall of the sliding block (10), and the bottom ends of the supporting arms (11) are respectively rotatably connected with the outer side walls of the groups of the supporting blocks (4).
3. The spinning die with adjustable wheel width according to claim 1, further comprising a plurality of groups of first air cylinders (12), a supporting table (13), a plurality of groups of second air cylinders (14) and a plurality of groups of supporting plates (15), wherein fixed ends of the plurality of groups of first air cylinders (12) are all arranged at the top end of the base (1), the supporting table (13) is arranged at the moving end of the plurality of groups of first air cylinders (12), the plurality of groups of second air cylinders (14) are circumferentially arranged at the top end of the supporting table (13), and the plurality of groups of supporting plates (15) are respectively arranged at the moving end of the plurality of groups of second air cylinders (14).
4. The spinning die with adjustable wheel width according to claim 1, wherein the lifting device comprises two groups of connecting frames (16) and two groups of third air cylinders (17), the two groups of connecting frames (16) are respectively arranged at the left end and the right end of the cylinder body (6), the two groups of third air cylinders (17) are respectively arranged at the left end and the right end of the top end of the base (1), and the two groups of connecting frames (16) are respectively arranged at the moving ends of the two groups of third air cylinders (17).
5. The spinning die with adjustable wheel width as claimed in claim 2, further comprising an electromagnetic slip ring (18) and a support (19), wherein the electromagnetic slip ring (18) is installed in the middle of the inner side wall of the cylinder (6), the support (19) is installed at the top end of the shell (3), the rotating end of the electromagnetic slip ring (18) is connected with the top end of the support (19), and the electromagnetic slip ring (18) is electrically connected with the motor (8).
6. The spinning die with adjustable wheel width as claimed in claim 1, further comprising a plurality of groups of guide blocks (20), wherein the plurality of groups of guide blocks (20) are all arranged on the inner side wall of the shell (3), and the plurality of groups of support blocks (4) are respectively and slidably arranged on the plurality of groups of guide blocks (20).
7. A wheel width adjustable spinning die according to claim 1, wherein the outer side walls of the plurality of groups of fixing plates (5) are provided with anti-skid patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321590719.6U CN220144472U (en) | 2023-06-21 | 2023-06-21 | Spinning mould with adjustable wheel width |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321590719.6U CN220144472U (en) | 2023-06-21 | 2023-06-21 | Spinning mould with adjustable wheel width |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220144472U true CN220144472U (en) | 2023-12-08 |
Family
ID=89015703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321590719.6U Active CN220144472U (en) | 2023-06-21 | 2023-06-21 | Spinning mould with adjustable wheel width |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220144472U (en) |
-
2023
- 2023-06-21 CN CN202321590719.6U patent/CN220144472U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110091682B (en) | Bicycle tire mounting device and bicycle tire mounting method | |
| CN109396234B (en) | Air duct flanging and rounding machine | |
| CN110560587A (en) | Pipe end forming machine | |
| CN109483925A (en) | Combined press roller arrangement and tire rolling depression method | |
| CN113059414A (en) | New energy automobile hub forging device convenient for efficient production and use method | |
| CN220144472U (en) | Spinning mould with adjustable wheel width | |
| CN107186028A (en) | A kind of pressing equipment for punching press auto parts | |
| CN110625458B (en) | Batch polishing equipment and processing method for nuts for machining | |
| CN112588930A (en) | Internal stay formula work piece processingequipment | |
| CN208827188U (en) | A kind of tire support apparatus | |
| CN113579973A (en) | New forms of energy motor housing surface treatment device | |
| CN112059847A (en) | Post-treatment process for injection molding of automobile parts | |
| CN111243851A (en) | Foldable triangular iron core assembly table with openings | |
| CN209393783U (en) | A kind of drum flange furling plate round machine | |
| CN220996040U (en) | Auxiliary positioning device for inflation-free tire mounting machine | |
| CN216965927U (en) | Rim edge rolling device | |
| CN211467174U (en) | High-efficient mould pressing processing platform for car | |
| CN217964336U (en) | Die-filling height adjusting mechanism of double-point punch press | |
| CN220197409U (en) | Clamping device for flywheel casing casting production and processing | |
| CN217047560U (en) | Non-pneumatic tire production mold | |
| CN217726727U (en) | Die device capable of being formed at one time | |
| CN221109627U (en) | Hub spinning die | |
| CN220532713U (en) | Multi-station rotary clamping device of punch press | |
| CN219486289U (en) | Semiconductor plastic package die with adjustable spacing | |
| CN220806188U (en) | Tooling equipment for assembling leather bag and supporting ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |