CN208575180U - A kind of spoke stamping processing composable mold - Google Patents
A kind of spoke stamping processing composable mold Download PDFInfo
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- CN208575180U CN208575180U CN201821098739.0U CN201821098739U CN208575180U CN 208575180 U CN208575180 U CN 208575180U CN 201821098739 U CN201821098739 U CN 201821098739U CN 208575180 U CN208575180 U CN 208575180U
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- 238000004080 punching Methods 0.000 claims abstract description 97
- 239000011230 binding agent Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 17
- 230000011218 segmentation Effects 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 14
- 238000005482 strain hardening Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
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- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
This technology is related to cold-working processing tool field, provides a kind of spoke stamping processing composable mold, and four operation break-downs such as outer circle punching in spoke stamping processing, stretching, centre bore punching, flange can be once completed using the mold；A kind of spoke stamping processing composable mold, including horizontally disposed, center line coaxial lower die and upper mold, upper mold includes top mold holder, upper mold binder block, rush on the punching of center and the upper mold core of spherical pit is arranged at bottom, it rushes and is connected firmly below top mold holder in upper mold core and center punching, rush to, be located in upper mold core on the mobile centrally disposed punching of upper mold binder block；Lower die includes that the lower mold core of spherical boss, center punching undershoot, blank holder and outer circle punching knife rest are arranged at lower mold holder, top, lower mold core and outer circle punching knife rest are connected firmly in the upper surface of lower mold holder, blank holder is mobile to be arranged in lower mold core, is located in outer circle punching knife rest, center punching undershoot is embedded on the top of lower mold core, is fixedly connected with outer circle punching knife on the top of outer circle punching knife rest.
Description
Technical field
This technology is related to cold-working processing tool field, provides a kind of spoke stamping processing composable mold, can using the mold
Once to complete four operation break-downs such as the outer circle punching in spoke stamping processing, stretching, centre bore punching, flange.
Background technique
Spoke connects the part of wheel rim and wheel hub on wheel.As the wheel rim of wheel of vehicle, the device of spoke is protected, take turns
Spoke is one of wheel important component, it is characterized in that a pair of of circle cover plate, the diameter of cover plate and the diameter of wheel rim connect
Closely, there is the hole greater than axis of wheel rotation in the center of cover plate, has aperture in the part at cover plate close to edge, there is annular at the edge of cover plate
The curved surface of wheel plate, wheel plate can be fitted closely with the curved surface of wheel rim.
In the prior art, spoke mostly uses the plate cutting with preferable ductility, mainly through punching, stretching, flange
Equal three process cold-working is process.Plate with a thickness of 3 ~ 5mm, but it is the most commonly used with a thickness of the plate of 4mm.
Complete the lathe multiselect press machine of above-mentioned three process.
In blank operation, by means of blanking die (tool), the blank of required chamfered shape and size is isolated from plate
It processes and stocks up for spoke.Substantially, punching is to make plate shear-deformable along the contour line generation of setting using the cutting edge of blanking die
And it separates.The blank is properly termed as stretched blank.
In stretching process, by means of stretching die (tool), carry out stretched blank directly by deformation force and in mold
Plastic deformation, so that the product parts for obtaining certain shapes, size and performance provide blank for flange.The blank is properly termed as turning over
Side blank.
In overturning process, by means of flange die (tool), the outer rim on flange blank is translated into treating selvedge and completes rushing for spoke
Pressure processing.In this process, material plastic flow can be improved, to avoid rupture or corrugation.
The spoke being process through above-mentioned operation, the stretching Reducing thickness and stress of constituent material are effectively reduced, stress
Tend to be balanced.
Above-mentioned processing technology, though being able to satisfy technique requirement, it is opposite to need three molds for point three process processing
It answers, in process, it is also desirable to which there are three station ability meet demands, increase production cost, reduce production efficiency, more
Add and is unsuitable for the requirement that high-volume is processed.
In addition, being based on above-mentioned processing method, the consistency of product is poor.
Summary of the invention
The purpose of this technology is to provide a kind of spoke stamping processing composable mold, can once be completed using the mold
Four operation break-downs, the consistency of product such as outer circle punching, stretching, centre bore punching, flange in spoke stamping processing are preferable.
The purpose of this technology is achieved through the following technical solutions:
A kind of spoke stamping processing composable mold, including horizontally disposed, center line coaxial lower die and upper mold, upper mold is mobile
It is arranged in the upper surface of lower die；Upper mold include the coaxial top mold holder of center line, upper mold binder block, center punching on rush and bottom have ball
It rushes and is connected firmly below top mold holder on the upper mold core of shape pit, upper mold core and center punching, upper mold binder block is mobile to be arranged in
It rushes to, be located in upper mold core on heart punching；Lower die include the coaxial lower mold holder of center line, top have spherical boss lower mold core,
Center is punched undershoot, blank holder and outer circle and is punched knife rest, and lower mold core and outer circle punching knife rest are connected firmly in the upper surface of lower mold holder, flanging
Circle is mobile to be arranged in lower mold core, is located in outer circle punching knife rest, and center punching undershoot is embedded on the top of lower mold core, in outer circle
The top of punching knife rest is fixedly connected with outer circle punching knife；The outer of upper mold core bottom and outer circle punching knife are used cooperatively outside composition spoke
Round blanking die, center is punched punching and center punching undershoot is used cooperatively and forms spoke centre hole blanking die；Upper mold core bottom
The spherical boss of interior edge and lower mold core is used cooperatively composition spoke stretching die；Spoke stretching die is again with blank holder with the use of composition
Spoke flange die.
When use:
Upper mold is connected firmly by the sliding block lower plane of top mold holder and press machine, and lower die is solid by the following table of lower mold holder and lathe
Connection starts press machine, and upper mold follows sliding block uplink, and upper mold binder block partially protrudes into spherical pit relative to top mold holder downlink.Pressure
Flange goes upward to the upper surface isometry position of blank holder upper surface Yu outer circle blanking knife, and plate is then placed on blank holder, outer
The upper surface of circle punching knife；Lathe slide block down, upper mold core follow top mold holder downlink, the outer edge of a knife of upper mold core contact plate at first
Plate is pressed in the upper plane of blank holder and outer circle punching knife and continues traveling downwardly and completes with outer circle punching knife collective effect by material
Spoke outer circle is punched operation break-down, forms stretched blank；Lathe sliding block continues traveling downwardly, and the interior of upper mold core bottom continues to push along the edge of a knife
Stretched blank simultaneously oppresses blank holder downlink, and the spherical boss of lower mold core contacts stretched blank, and stretched blank starts to do material stretching
Deformation, as upper mold core continues traveling downwardly the continuity stretched for material, the outer circle of stretched blank is to contract until stretched blank
Outer circle be all drawn into upper mold core with the gap empty slot outside lower mold core, form flange blank, complete flange operation break-down, together
Shi Shangmo binder BOB(beginning of block) is contacted to gradually compression flange blank；Lathe sliding block continues traveling downwardly, and starts flange blank flange, upper mold
Binder block bounces back, and the centre of flange blank is stretched out and contacted in punching on central blanking, continues traveling downwardly total with center punching undershoot
Same-action complete spoke centre hole be punched operation break-down, then by flange blank be pressed together on completely upper and lower mold core and blank holder dimension at
The intracavitary completion flange blank flange operation break-down of type.
The beneficial effect of this technology is:
Composable mold is processed using above-mentioned a set of spoke stamping, can once complete the outer circle punching in spoke stamping processing
Four operation break-downs, the consistency of product such as sanction, stretching, centre bore punching, flange are preferable.
As the improvement to this technology, upper die holder is fixedly connected between upper mold core and top mold holder, center punching on punching and
It is fixedly connected with center punching rush-up seat between top mold holder, lower die holder is fixedly connected between lower mold core and lower mold holder, under blank holder
Face is fixedly connected with flanging ring support, and it is that segmentation outer circle is punched knife that outer circle, which is punched knife,.
When blank holder goes upward to highest point, the upper surface of blank holder upper surface and outer circle punching knife is contour but is not less than lower die
The spherical boss of core；It is rushed on the punching of center and center is punched the sum of rush-up seat height and the margin of the height of upper mold binder block is not less than
One material is thick, and each upper surface edge of a knife central part for being segmented outer circle punching knife has a material is thick to fall short transverse is low compared with two sides
Difference；One material thickness is 3 ~ 5mm, takes this with a thickness of 4mm.
As the further improvement to this technology, connects firmly the mobile setting of the guide sleeve in top mold holder and connecting firmly on lower mold holder
On the guide post in face.
Above-mentioned improvement, using the advantage of guide post sliding block pair, so that mobile be arranged in lower die of upper mold has accurate guiding
Effect.
As the further improvement to this technology, compressed spring is additionally provided between upper die holder and upper mold binder block.
This improvement provides upper mold binder block to the pressure of flange blank, with the increasing of amount of spring compression by compressed spring
Greatly, which also increases with it, and flange blank is pressed in lower mold core, by flange blank reliable location, after being conducive to implementation
Continuous processing.
As the further improvement to this technology, the top of the mobile movable ejector beam being arranged in lower mold holder and blank holder
It is abutted against the bottom surface of seat.
This improvement, the lifting using the hydraulic die cushion of press machine for flanging ring support and blank holder provide power, are easy to real
It applies.
As the further improvement to this technology, offered in lower die in perforation lower mold core, lower die holder and lower mold holder
The heart is punched hole, and center is punched the internal diameter of the aperture not less than center punching undershoot in hole.
This improvement is punched the waste material that operation break-down generates for center hole and provides transfer passage, is conducive to improve production efficiency.
The threaded hole for connecting with lathe is all offered in top mold holder and lower mold holder.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of spoke stamping processing composable mold.
Fig. 2 is a kind of working state schematic representation of spoke stamping processing composable mold.
Fig. 3 is the A-A view of Fig. 2.
Specific embodiment
With reference to the accompanying drawing, this technology is described further:
Process composable mold referring to Fig. 1, Fig. 2, a kind of spoke stamping shown in Fig. 3, including it is horizontally disposed, center line is coaxial
Lower die and upper mold, upper mold is mobile to be arranged in the upper surface of lower die.
Upper mold include the coaxial top mold holder 1 of center line, upper mold binder block 7, center punching on punching 9 and bottom have spherical pit
Upper mold core 11, punching 9 connects firmly below top mold holder 1 in upper mold core 11 and center punching, and upper mold binder block 7 is mobile to be arranged in
On heart punching in punching 9, in upper mold core 11.
Lower die include the coaxial lower mold holder 2 of center line, top have the lower mold core 12 of spherical boss, center punching undershoot 13,
Blank holder 15 and outer circle are punched knife rest 17, and lower mold core 12 and outer circle punching knife rest 17 are connected firmly in the upper surface of lower mold holder 2, blank holder 15
Mobile to be arranged in lower mold core 12, be located in outer circle punching knife rest 17, center punching undershoot 13 is embedded on the top of lower mold core 12,
Outer circle punching knife 18 is fixedly connected on the top of outer circle punching knife rest 17.
Top mold holder 1, the main body of lower mold holder 2 are all rectangular plate type structure, and a vertical guide post is respectively arranged in the quadrangle of lower mold holder 2
3, the embedded guide sleeve 4 of a vertical unthreaded hole is respectively opened up in the quadrangle of top mold holder 1 and is matched with guide post 3, and top mold holder 1, lower mold holder 2 pass through
Guide post 3 and guide sleeve 4 connect.
The threaded hole (not shown) for connecting with press machine is all offered in top mold holder 1 and lower mold holder 2.
1 lower central of top mold holder open up one for position, installation center punching rush-up seat 8 centralized positioning counterbore 101
And the positioning counterbore 102 for positioning, installing upper die holder 5, and be equipped with central symmetry distribution several for install compression bullet
The installation counterbore 103 of spring 10.
The upper die holder 5 of ring structure is fixedly installed in the bottom surface of top mold holder 1 by screw.
Central blanking rush-up seat 8, in the through-hole 701 on upper mold binder block 7；The upper end of central blanking rush-up seat 8 is logical
It crosses screw to be fixed in the centralized positioning counterbore 101 that 1 center of top mold holder opens up, the other end, which is equipped on central blanking, rushes 9.
7 center of upper mold binder block sets a through-hole 701, and upper surface is equipped with several installation counterbores 702 of central symmetry distribution,
Outer wall top circumferential direction projection step 703.Upper mold binder block 7, center punching rush-up seat 8 on through-hole 701 and center punching by rushing
Seat 8 constitutes guide post sliding block pairs, and upper mold binder block 7 moves on centrally disposed punching rush-up seat 8, is located in upper die holder 5.
Several compressed springs 10, one end are set to top mold holder 1 vertically and install in counterbore 103, and the other end is against upper mold binder block 7
In the installation counterbore 702 of upper surface.
Upper mold core 11 is fixed under upper die holder 5 by screw, and the inner hole top of upper mold core 11 sets one and upper mold binder block 7
Counterbore 111 corresponding to outer wall top circumferential direction boss 703.Circumferential boss 703 collectively forms upper mold binder block 7 with counterbore 111 and exists
The extreme position limiting device of downlink in upper die holder 5, upper mold core 11.
The spherical pit to match with spoke outboard face is opened up in the bottom of upper mold core 11.In fact, the bottom of upper mold core 11
Face is annular, and annular outer is the upper slitter that spoke outer circle is punched knife, and annular interior edge is the upper mold of spoke stretching die.
A central through hole 201 is opened up at the center of lower mold holder 2, it is heavy that the center upper portion of central through hole 201 sets a centralized positioning
Hole 202, the outside of central through hole 201 is symmetrical, and there are four installation through-holes 203.
It is opposite with centralized positioning counterbore 202 that a centralized positioning counterbore 204 is opened up in the bottom of the lower die holder 6 of ring structure
It answers, in the embedded positioning ring 19 that sets of centralized positioning counterbore 204 and centralized positioning counterbore 202 under being accurately positioned in lower die holder 6
Lower die holder 6 is fixedly installed in the upper surface of lower mold holder 2 by screw by the upper surface of mould bases 2.
Center opens up the lower mold core 12 of through-hole, is fixed on lower die holder 6 by screw.
The top of lower mold core 12 is spherical in shape, and gabarit matches with the medial surface of spoke.
Center is punched undershoot 13, the fixed top for being embedded in lower mold core 12.The top surface of center punching undershoot 13 is not higher than down
The top surface of mold core 12 traditionally takes the top surface of center punching undershoot 13 and the top surface of lower mold core 12 contour.
Flanging ring support 14 is sheathed on lower die holder 6, outside lower mold core 12.In 14 lower end outer rim projection shoulder of flanging ring support, pressing
The use screw head of flange seat 14 is fixedly connected with blank holder 15.
Four movable ejector beams 16, in the mobile installation through-hole 203 being arranged on lower mold holder 2, movable ejector beam 16 it is upper
Against the lower end surface of flanging ring support 14, the other end is connected with press hydraulic cushion mandril at end.
Outer circle is punched knife rest 17, is sheathed on outside flanging ring support 14, blank holder 15 and is fixedly connected on lower mold holder 2 by screw
On.The inside projection step 171 in top in outer circle punching knife rest 17 and 141 phase of shoulder in the 14 lower end outer rim projection of flanging ring support
It is corresponding, for limiting the extreme position of the uplink in outer circle blanking knife rest 17 of blank holder 15.
It is fixedly connected with outer circle punching knife 18 on the top of outer circle blanking knife rest 17, it is segmentation outer circle punching that outer circle, which is punched knife 18,
The fixed outer circle that is embedded in of several segmentation outer circles punching knife 18 is punched in knife rest 17 by knife using screw.
The sum of 8 height of punching 9 and center punching rush-up seat and the margin of the height of upper mold binder block 7 are not less than one on the punching of center
A material is thick, and shown in Figure 3, and being segmented the upper surface edge of a knife central part of outer circle blanking knife 18 and two sides has short transverse is low
The thick drop of one material, a material thickness is 3 ~ 5mm, takes this with a thickness of common 4mm.
When blank holder 15 goes upward to extreme position in outer circle blanking knife rest 17, the upper surface of blank holder 15 and segmentation outer circle
The upper surface of blanking knife 18 is contour but is not less than the spherical boss of lower mold core 12.
In fact, having the through-hole of perforation or more in lower mold core 12, lower die holder 6, lower mold holder 2, the aperture of the through-hole is not
Less than the internal diameter of center punching undershoot 13, it is punched hole centered on the through-hole, for being punched the waste material that operation break-down generates for center hole
Transfer passage is provided.
Above-mentioned spoke stamping processes composable mold, and the outer of 11 bottom of upper mold core and outer circle punching knife 18 are with the use of composition
Spoke outer circle blanking die, center is punched punching 9 and center punching undershoot 13 is used cooperatively and forms spoke centre hole blanking die；Upper mold
The spherical boss of the interior edge of 11 bottom of core and lower mold core 12 is used cooperatively composition spoke stretching die；Spoke stretching die and and blank holder
15 with the use of composition spoke flange die.
It elaborates with reference to the accompanying drawing to the application method of this technology:
Using constantly, using threaded hole, top mold holder 1 is connect with the sliding block lower plane of press machine, lower mold holder 2 and press machine
Following table connection.Meanwhile press hydraulic cushion mandril being connect with movable ejector beam 16.
Start press machine, part of the upper die follows sliding block uplink, upper mold binder block 7 under the action of compressed spring 10 relative to
1 downlink of top mold holder is in ejection state, and press hydraulic cushion mandril, which acts on four movable ejector beams 16, makes the flanging ring support of lower die
14, for blank holder 15 relative to lower mold holder uplink, blank holder 15 extend out to the upper plane of plane on blank holder 15, outer circle punching knife 18
Plate 20 is placed in the upper plane of blank holder 14 and outer circle punching knife 18 by isometry position.
Press ram downlink, upper mold core 11 follow 1 downlink of top mold holder, and the outer edge of a knife lower plane of upper mold core 11 connects at first
Plate 20 is pressed on blank holder 15 in plane and the upper plane of outer circle blanking knife 18 and continues traveling downwardly completion wheel by touch panel material 20
Spoke outer circle is punched operation break-down, forms stretched blank.
Lathe sliding block continues traveling downwardly, and the interior of 11 bottom of upper mold core continues to push stretched blank and oppress blank holder along the edge of a knife
15, flanging ring support 14, movable ejector beam 16 and machine tool hydraulic pad downlink, and the spherical boss of lower mold core 12 contacts stretched blank, draws
It stretches blank to start to do material tensile deformation, as upper mold core continues traveling downwardly the continuity for stretching material, the outer circle of stretched blank
To contract until the outer circle of stretched blank is all drawn into upper mold core 11 with the gap empty slot outside lower mold core 12, formation is turned over
Side blank completes flange operation break-down, while upper mold binder block 7 starts contact to gradually compression flange blank.
Lathe sliding block continues traveling downwardly, and starts flange blank flange, and upper mold binder block 7 compresses compressed spring 10 and bounces back, center
The centre of flange blank is stretched out and is contacted in punching 9 on blanking, continues traveling downwardly and completes to take turns with center punching 13 collective effect of undershoot
Spoke centre bore is punched operation break-down, and flange blank is then pressed together on what upper mold core 11, lower mold core 12 and blank holder 15 were tieed up completely
The intracavitary completion flange blank flange operation break-down of type.
Complete the punch process of a spoke.
Press ram uplink carries out next work cycle.
The beneficial effect of this technology is:
Composable mold is processed using above-mentioned a set of spoke stamping, can once complete the outer circle punching in spoke stamping processing
Four operation break-downs such as sanction, stretching, centre bore punching, flange, the degree of automation is higher, and homogeneity of product is preferable.
Claims (8)
1. a kind of spoke stamping processes composable mold, including horizontally disposed, center line coaxial lower die and upper mold, upper mold movement is set
Set in the upper surface of lower die, characterized in that upper mold include the coaxial top mold holder of center line, upper mold binder block, center punching on rush and
The upper mold core of spherical pit is arranged at bottom, rushes and is connected firmly below top mold holder in upper mold core and center punching, upper mold binder block is mobile
It rushes to, be located in upper mold core on centrally disposed punching；Lower die includes that spherical boss is arranged at the coaxial lower mold holder of center line, top
Lower mold core, center punching undershoot, blank holder and outer circle are punched knife rest, and lower mold core and outer circle punching knife rest are connected firmly in the upper of lower mold holder
Face, blank holder is mobile to be arranged in lower mold core, is located in outer circle punching knife rest, and center punching undershoot is embedded on the top of lower mold core
End is fixedly connected with outer circle punching knife on the top of outer circle punching knife rest；The outer of upper mold core bottom is used cooperatively with outer circle punching knife
Spoke outer circle blanking die is formed, punching is with center punching undershoot with the use of composition spoke centre hole blanking die on the punching of center；On
The spherical boss of the interior edge of mold core bottom and lower mold core is used cooperatively composition spoke stretching die；Spoke stretching die is matched with blank holder again
It closes using composition spoke flange die.
2. spoke stamping according to claim 1 processes composable mold, characterized in that solid between upper mold core and top mold holder
Be associated with upper die holder, rushed between top mold holder on the punching of center and be fixedly connected with center punching rush-up seat, lower mold core and lower mold holder it
Between be fixedly connected with lower die holder, be fixedly connected with flanging ring support below blank holder, it is that segmentation outer circle is punched knife that outer circle, which is punched knife,.
3. spoke stamping according to claim 1 or 2 processes composable mold, characterized in that blank holder goes upward to highest point
When, the upper surface of blank holder upper surface and outer circle punching knife is contour but is not less than the spherical boss of lower mold core；It is rushed on the punching of center
Thick with not less than one material of margin of the height of upper mold binder block with the sum of center punching rush-up seat height, each outer circle that is segmented is punched knife
Upper surface edge of a knife central part compared with two sides in the low drop for having a material thick of short transverse；One material thickness is 3 ~ 5mm, takes this
With a thickness of 4mm.
4. spoke stamping according to claim 1 processes composable mold, characterized in that the guide sleeve connected firmly in top mold holder moves
It is dynamic to be arranged on the guide post connected firmly on lower mold holder.
5. spoke stamping according to claim 1 processes composable mold, characterized in that upper die holder and upper mold binder block it
Between be additionally provided with compressed spring.
6. spoke stamping according to claim 1 processes composable mold, characterized in that the mobile work being arranged in lower mold holder
The top of dynamic ejector beam and the bottom surface of flanging ring support are abutted against.
7. spoke stamping according to claim 1 processes composable mold, characterized in that offer perforation lower die in lower die
The center of core, lower die holder and lower mold holder is punched hole, and center is punched the internal diameter of the aperture not less than center punching undershoot in hole.
8. spoke stamping according to claim 1 processes composable mold, characterized in that all opened in top mold holder and lower mold holder
Equipped with the threaded hole for being connect with lathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821098739.0U CN208575180U (en) | 2018-07-12 | 2018-07-12 | A kind of spoke stamping processing composable mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821098739.0U CN208575180U (en) | 2018-07-12 | 2018-07-12 | A kind of spoke stamping processing composable mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208575180U true CN208575180U (en) | 2019-03-05 |
Family
ID=65510199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821098739.0U Expired - Fee Related CN208575180U (en) | 2018-07-12 | 2018-07-12 | A kind of spoke stamping processing composable mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208575180U (en) |
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2018
- 2018-07-12 CN CN201821098739.0U patent/CN208575180U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Lishui District of Nanjing City, Jiangsu province 211219 Honglan Town Industrial Zone Patentee after: Nanjing Meisen Intelligent Equipment Co.,Ltd. Address before: Lishui District of Nanjing City, Jiangsu province 211219 Honglan Town Industrial Zone Patentee before: NANJING MAISEN PRECISION DIE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190305 |