CN212945020U - Cylinder rolling type flanging die - Google Patents
Cylinder rolling type flanging die Download PDFInfo
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- CN212945020U CN212945020U CN202021637475.9U CN202021637475U CN212945020U CN 212945020 U CN212945020 U CN 212945020U CN 202021637475 U CN202021637475 U CN 202021637475U CN 212945020 U CN212945020 U CN 212945020U
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Abstract
The utility model relates to a cylindrical rolling type flanging die, which comprises an upper die seat and a lower die seat which are arranged at intervals from top to bottom, wherein a concave die plate and a concave die are sequentially arranged in the middle of the top surface of the lower die seat, a material sheet is placed on the concave die, a plurality of nitrogen springs are arranged in the middle of the bottom surface of the upper die seat at intervals, a material pressing seat is jointly arranged at the downward output ends of the nitrogen springs, a material pressing plate is arranged at the bottom surface of the material pressing seat, and a long screw is arranged between the; a cutter block seat embedded with a flanging cutter block is arranged on the bottom surface of the upper die seat positioned on the outer side of the material pressing seat, an insert is embedded towards the edge of the flanging cutter block of the material pressing plate, and a cylinder is embedded towards the edge of the insert of the material pressing plate; in the descending process of the upper die holder, the outer wall surface of the cylinder is attached to the material sheet, and the cylinder applies downward force to the material sheet and rolls around the axis of the cylinder; the utility model discloses a cylindrical from the roll application of force make its deformation turn-ups in the tablet to the galling phenomenon of tablet surface production because of the turn-ups has effectively been avoided even to the reduction, has promoted turn-ups quality and effect greatly.
Description
Technical Field
The utility model belongs to the technical field of the turn-ups mould technique and specifically relates to a cylinder roll formula turn-ups mould.
Background
In the prior art, the flanging is realized by directly acting a steel cutter block on a product, so that the product is stressed and deformed to form the flanging.
In the flanging forming process, the head of the steel block directly acts on a product, and the steel block causes the product to be flanged in a hard stripping mode under the action of driving force; the hard stripping process is easy to cause the surface of the product to be napped due to hard stress, and greatly influences the quality of the product after flanging, particularly the appearance quality.
SUMMERY OF THE UTILITY MODEL
The cylindrical rolling type flanging die is reasonable in structure, so that galling on the surface of a material sheet caused by flanging is effectively reduced or even avoided, and flanging quality and effect are greatly improved.
The utility model discloses the technical scheme who adopts as follows:
a cylindrical rolling type flanging die comprises an upper die base and a lower die base which are arranged at an upper and lower interval, wherein a concave die plate is arranged in the middle of the top surface of the lower die base, a concave die is arranged on the concave die plate, a material sheet is placed on the concave die, a plurality of nitrogen springs are arranged at intervals in the middle of the bottom surface of the upper die base, the output ends of the nitrogen springs face downwards, a material pressing base is arranged at the output ends of the nitrogen springs together, a material pressing plate is arranged at the bottom surface of the material pressing base, and a long screw is arranged between the; the bottom surface of the upper die holder positioned on the outer side of the pressure holder is also provided with a cutter block holder, the bottom surface of the cutter block holder is embedded with a flanging cutter block, the edge of the flanging cutter block facing the pressure holder is embedded with an insert, and the edge of the insert facing the pressure holder is embedded with a cylinder; in the descending process of the upper die holder, the outer wall surface of the cylinder is attached to the material sheet, and the cylinder applies force downwards to the material sheet and rolls around the axis of the cylinder.
As a further improvement of the above technical solution:
a through groove is formed in the edge of the insert along the length direction, the section of the groove is of an inwards concave arc structure, a cylinder is inserted into the groove from the end of the groove, and the length of the chord length at the opening of the section of the groove is smaller than the diameter of the cylinder; the inserts positioned outside the ends of the two ends of the cylinder are provided with check blocks, the groove is positioned between the two check blocks, and the check blocks are fixedly installed with the inserts through fasteners.
The middle part of the bottom surface of the upper die base is also fixedly provided with a male die core, the middle part of the female die is embedded with a material ejecting block, the top surface of the material ejecting block is lower than that of the female die, the material ejecting block corresponds to the male die core, and the bottom of the material ejecting block is provided with a spring; after the material pressing plate moves downwards and is attached to the material sheet, along with the shrinkage of the nitrogen spring, the bottom end of the male die core penetrates through the material pressing seat and the material pressing plate downwards in sequence, the force is applied to the material sheet by the bottom end of the male die core to deform the material sheet, and then the force is applied to the material ejecting block by the male die core to compress the spring below the material ejecting block.
And a plurality of positioning blocks are arranged on the upper surface of the concave die plate at intervals on the circumferential outer side of the concave die, the positioning blocks extend upwards, the top surfaces of the positioning blocks are higher than the top surface of the concave die, and the material sheet is positioned among the positioning blocks.
The upper surface of the lower die holder positioned outside the edge of the female die plate is also provided with an anti-side block, and a gap is arranged between the anti-side block and the edge of the female die; when the die is closed, the inner side of the bottom end of the flanging knife block is close to the material sheet, the inner side face of the flanging knife block moves downwards along the side face of the female die along with the flanging position of the material sheet, and the outer side face of the knife block seat is tightly attached to the inner side face of the anti-side block and moves downwards relatively.
The inner limiting blocks are arranged on the bottom surfaces of the upper die base at the four corners of the material pressing base, and the bottom ends of the inner limiting blocks touch the top surface of the material pressing base when the nitrogen spring is compressed.
The top surface of the lower die holder positioned outside the concave die plate is provided with balance columns at intervals, and the top surfaces of the balance columns are contacted with the bottom surface of the pressure plate in the die closing process; the number of the balance columns is four, and the four balance columns are located right below four corners of the bottom surface of the pressure plate.
Four corners of the opposite surfaces of the upper die holder and the lower die holder are provided with a guide sleeve and a guide pillar which are matched with each other; an outer upper limiting block is arranged on the bottom surface of the upper die base positioned outside the guide sleeve, and an outer lower limiting block is arranged on the top surface of the lower die base positioned outside the guide pillar; when the die is closed, the outer upper limit block touches the outer lower limit block.
The lower bolster is installed to the lower bolster bottom surface, and the distance between the relative limit of lower bolster is greater than the corresponding distance between the limit of lower bolster correspondence, and the fork truck piece is installed at the equal interval in the edge on the relative limit of lower bolster top surface that is located the lower bolster outside, and the lug is still installed to the lower bolster top surface that is located the fork truck piece outside.
An upper template is arranged on the top surface of the upper die base at intervals, and a pad is arranged in the interval between the bottom surface of the upper template and the top surface of the upper die base; the top surface of the upper template is installed with an external press.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, convenient operation, at the compound die in-process, the cylinder down application of force still from the roll in the in-process of tablet, the cylinder makes the turn-ups of tablet deformation in the time, the cylinder constitutes rolling friction with the contact surface of tablet to effectively reduce or even avoided the tablet surface because of the napping phenomenon of the turn-ups production of rolling over firmly, promoted turn-ups quality and effect greatly, the practicality is good.
The utility model discloses still include following advantage:
the cylinder is inserted into the groove from the end of the groove, and the length of the chord length at the opening of the section of the groove is smaller than the diameter of the cylinder, so that the cylinder can be accommodated in the groove, meanwhile, the space is still left for the cylinder to roll, and the cylinder can roll smoothly; the presence of the stop serves to prevent the cylinder from escaping from the recess from the head.
Drawings
Fig. 1 is a schematic structural diagram of the present invention (before mold closing).
Fig. 2 is a schematic structural view of the upper die assembly of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic view of the installation between the insert and the cylinder and between the insert and the stopper.
Fig. 5 is a schematic structural view of the lower mold assembly of the present invention.
Fig. 6 is a schematic view of the present invention in an operating state (in mold clamping).
Wherein: 10. an outer upper limit block; 11. mounting a template; 12. a foot pad; 13. an upper die holder; 14. a cutter block seat; 15. a flanging knife block; 16. a male die core; 17. a material pressing seat; 18. a material pressing plate; 19. a guide sleeve; 20. a nitrogen spring; 21. a long screw; 22. an inner limiting block; 23. an insert; 24. a cylinder; 25. a stopper; 26. a fastener; 231. a groove;
30. a lower template; 31. a lower die holder; 32. preventing a lateral block; 33. a web; 34. a female die; 35. a material ejection block; 36. a cavity plate; 37. positioning blocks; 38. lifting lugs; 39. a forklift block; 40. a guide post; 41. an outer lower limiting block; 42. and (4) balancing the column.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, 2 and 3, the cylindrical rolling type flanging die of the embodiment includes an upper die base 13 and a lower die base 31 which are arranged at an interval from top to bottom, a concave die plate 36 is installed in the middle of the top surface of the lower die base 31, a concave die 34 is installed on the concave die plate 36, a material sheet 33 is placed on the concave die 34, a plurality of nitrogen springs 20 are installed at the interval in the middle of the bottom surface of the upper die base 13, output ends of the nitrogen springs 20 face downward, material pressing bases 17 are installed at output ends of the nitrogen springs 20 together, a material pressing plate 18 is installed at the bottom surface of the material pressing base 17, and long screws 21 are installed between the material pressing; the bottom surface of the upper die base 13 positioned on the outer side of the material pressing base 17 is also provided with a cutter block base 14, the bottom surface of the cutter block base 14 is embedded with a flanging cutter block 15, the edge of the flanging cutter block 15 facing the material pressing plate 18 is embedded with an insert 23, and the edge of the insert 23 facing the material pressing plate 18 is embedded with a cylinder 24; in the process that the upper die holder 13 descends, the outer wall surface of the cylinder 24 is attached to the material sheet 33, and the cylinder 24 applies downward force to the material sheet 33 and rolls around the axis of the cylinder.
In the mold closing process, the cylinder 24 can roll in the process of downward force application on the material sheet 33, and when the cylinder 24 enables the material sheet 33 to deform and turn up, the contact surface of the cylinder 24 and the material sheet 33 forms rolling friction, so that the galling phenomenon caused by hard strip and turn up on the surface of the material sheet 33 is effectively reduced or even avoided.
As shown in fig. 4, a through groove 231 is formed at the edge of the insert 23 along the length direction, the cross section of the groove 231 is of an inward concave arc structure, the cylinder 24 is inserted into the groove 231 from the end of the groove 231, and the length of the chord length at the opening of the cross section of the groove 231 is smaller than the diameter of the cylinder 24, so that the cylinder 24 is accommodated in the groove 231, meanwhile, the space is still left for the cylinder to roll, and the rolling is smooth; the insert 23 positioned outside the end heads of the cylinder 24 is provided with a stop 25, the groove 231 is positioned between the two stop 25, the stop 25 is fixedly arranged with the insert 23 through a fastener 26, and the stop 25 is used for preventing the cylinder 24 from falling out of the groove 231 from the end heads.
The middle part of the bottom surface of the upper die holder 13 is also fixedly provided with a male die core 16, the middle part of the female die 34 is embedded with a material ejecting block 35, the top surface of the material ejecting block 35 is lower than that of the female die 34, the material ejecting block 35 corresponds to the male die core 16, and the bottom of the material ejecting block 35 is provided with a spring; after the material pressing plate 18 descends and is attached to the material sheet 33, along with the contraction of the nitrogen spring 20, the bottom end of the male die core 16 sequentially penetrates through the material pressing seat 17 and the material pressing plate 18 downwards, the force is applied to the material sheet 33 by the bottom end of the male die core 16 to deform the material sheet, so that flanging is achieved on the edge of the hole opening corresponding to the middle of the material sheet 33, and then the force is applied to the material ejecting block 35 by the male die core 16 to enable the spring below to be compressed.
As shown in fig. 5, a plurality of positioning blocks 37 are mounted on the upper surface of the cavity plate 36 at intervals, the positioning blocks 37 extend upwards, the top surfaces of the positioning blocks 37 are higher than the top surface of the cavity plate 34, the material sheet 33 is located between the positioning blocks 37, and the positioning blocks 37 are used for accurately feeding and placing the material sheet 33 on the cavity plate 34.
The upper surface of the lower die holder 31 positioned outside the edge of the concave die plate 36 is also provided with an anti-side block 32, and a gap is arranged between the anti-side block 32 and the edge of the concave die 34; during die assembly, the inner side of the bottom end of the flanging cutter block 15 is close to the material sheet 33, the inner side of the flanging cutter block 15 moves downwards along the side of the female die 34 along with the flanging position of the material sheet 33, the outer side of the cutter block seat 14 is tightly attached to the inner side of the anti-side block 32 and moves downwards relatively, and the anti-side block 32 plays a role in guiding and supporting in the downward movement process of the cutter block seat 14, so that in the downward movement process of the cutter block seat 14, the cylinder 24 at the edge of the insert 23 is stably and reliably attached to the surface of the material.
The bottom surface of the upper die base 13 positioned at the four corners of the material pressing base 17 is provided with an inner limiting block 22, and the bottom end of the inner limiting block 22 is touched with the top surface of the material pressing base 17 when the nitrogen spring 20 is compressed.
The top surface of the lower die holder 31 positioned outside the cavity plate 36 is provided with the balance columns 42 at intervals, and in the die closing process, the top surfaces of the balance columns 42 are in contact with the bottom surface of the pressure plate 18; the number of the balance columns 42 is four, and the four balance columns 42 are positioned right below four corners of the bottom surface of the pressure plate 18; the presence of the standoff post 42 serves to balance the force applied to the lower mold assembly by the upper mold assembly during mold closing, so that the lower mold assembly is stable and stressed equally during mold closing.
Four corners of the opposite surfaces of the upper die holder 13 and the lower die holder 31 are provided with a guide sleeve 19 and a guide post 40 which are matched with each other; the bottom surface of the upper die base 13 positioned outside the guide sleeve 19 is provided with an outer upper limiting block 10, and the top surface of the lower die base 31 positioned outside the guide post 40 is provided with an outer lower limiting block 41; when the mold is closed, the outer upper limit block 10 touches the outer lower limit block 41.
Lower bolster 30 is installed to lower bolster 31 bottom surface, and the distance between the relative limit of lower bolster 30 is greater than the distance between the corresponding relative limit of lower bolster 31, and fork truck piece 39 is all installed at the equal interval in the edge on the relative limit of lower bolster 30 top surface that is located the lower bolster 31 outside, and lug 38 is still installed to lower bolster 30 top surface that is located the fork truck piece 39 outside.
An upper template 11 is arranged on the top surface of the upper die holder 13 at intervals, and a pad 12 is arranged in the interval between the bottom surface of the upper template 11 and the top surface of the upper die holder 13; the top surface of the upper platen 11 is mounted with an external press.
In this embodiment, as shown in fig. 2 and 5, three fins are arranged on the material sheet 33 and need to be flanged, according to the flanging requirement, one of the three fins needs to be flanged through the cylinder 24 structure, and the other two fins need to be flanged and formed through the profiling attachment of the flanging knife block 15 and the edge of the female die 34.
The utility model discloses a theory of operation does:
placing the sheet 33 on the die 34 such that the sheet 33 is positioned by the plurality of positioning blocks 37;
the external press works to drive the upper die assembly to move downwards relative to the lower die assembly by taking the matching of the guide post 40-the guide sleeve 19 as a guide, namely the upper die plate 11, the pad 12, the upper die base 13, the material pressing base 17 and the material pressing plate 18 move downwards synchronously until the bottom surface of the material pressing plate 18 is attached to the surface of the material sheet 33 on the female die 34;
the press continues to work, the upper die plate 11, the foot pads 12 and the upper die base 13 continue to descend, so that the nitrogen spring 20 between the material pressing base 17 and the upper die base 13 is compressed, in the process, the cylinder 24 on the insert 23 at the bottom of the flanging knife block 15 is close to and attached to the surface of the material sheet 33, the cylinder 24 rotates automatically under the action of attaching friction force and applies force to the surface of the material sheet 33, the stressed part of the material sheet 33 deforms downwards until the top surface of the material pressing base 17 is attached to the bottom end of the inner limiting block 22, the flanging knife block 15 moves to the lowest position relative to the material sheet 33, and the cylinder 24 finishes flanging action on the material sheet 33; meanwhile, the male die core 16 moves downwards to realize flanging at the through hole in the middle of the material sheet 33, and applies force to the material ejecting block 35 to move downwards to compress the spring at the bottom, as shown in fig. 6;
the press works reversely, the upper die plate 11, the foot pads 12, the upper die base 13 and the male die core 16 move upwards along with the press, and under the action of the compressed nitrogen spring 20, the bottom surface of the pressure plate 18 keeps being attached to the top surface of the material sheet 33, so that the material sheet 33 is smoothly separated from the male die core 16, and the material removal is realized until the nitrogen spring 20 resets;
the press continues to work in reverse with the nip plate 18 clear of the web 33; after the male die core 16 ascends, the compressed spring at the bottom of the material ejecting block 35 resets, so that the material ejecting block 35 ascends to reset and pushes the flanging at the through hole in the middle of the material sheet 33 upwards, and the demoulding between the material sheet 33 and the female die 34 is assisted.
The utility model discloses simple structure, ingenious, reasonable has effectively improved turn-ups quality and effect through rolling friction when realizing the turn-ups of tablet, and the practicality is good.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (10)
1. The utility model provides a cylinder roll formula turn-ups mould, includes upper die base (13) and die holder (31) that upper and lower interval set up, and the mid-mounting of die holder (31) top surface has die board (36), installs die (34) on die board (36), has placed tablet (33), its characterized in that on die (34): the middle of the bottom surface of the upper die base (13) is provided with a plurality of nitrogen springs (20) at intervals, the output ends of the nitrogen springs (20) face downwards, the output ends of the nitrogen springs (20) are jointly provided with a material pressing base (17), the bottom surface of the material pressing base (17) is provided with a material pressing plate (18), and a long screw (21) is further arranged between the material pressing base (17) and the upper die base (13); the bottom surface of the upper die base (13) positioned on the outer side of the material pressing base (17) is also provided with a cutter block base (14), the bottom surface of the cutter block base (14) is embedded with a flanging cutter block (15), the edge of the flanging cutter block (15) facing the material pressing plate (18) is embedded with an insert (23), and the edge of the insert (23) facing the material pressing plate (18) is embedded with a cylinder (24); in the descending process of the upper die holder (13), the outer wall surface of the cylinder (24) is attached to the material sheet (33), and the cylinder (24) applies downward force to the material sheet (33) and rolls around the axis of the cylinder.
2. The cylindrical rolling type flanging die of claim 1, wherein: a through groove (231) is formed in the edge of the insert (23) along the length direction, the section of the groove (231) is of an inwards concave arc structure, a cylinder (24) is inserted into the groove from the end of the groove (231), and the length of the chord length at the opening of the section of the groove (231) is smaller than the diameter of the cylinder (24); the insert (23) positioned outside the ends of the two ends of the cylinder (24) is provided with a stop block (25), the groove (231) is positioned between the two stop blocks (25), and the stop blocks (25) are fixedly mounted with the insert (23) through fasteners (26).
3. The cylindrical rolling type flanging die of claim 1, wherein: a male die core (16) is fixedly arranged in the middle of the bottom surface of the upper die base (13), a material ejecting block (35) is embedded in the middle of the female die (34), the top surface of the material ejecting block (35) is lower than that of the female die (34), the material ejecting block (35) corresponds to the male die core (16), and a spring is arranged at the bottom of the material ejecting block (35); after the material pressing plate (18) descends and is attached to the material sheet (33), along with the contraction of the nitrogen spring (20), the bottom end of the male die core (16) sequentially penetrates through the material pressing seat (17) and the material pressing plate (18) downwards, after the material sheet (33) is deformed by the force applied by the bottom end of the male die core (16), the lower spring is compressed by the force applied by the male die core (16) to the material ejecting block (35).
4. The cylindrical rolling type flanging die of claim 1, wherein: a plurality of positioning blocks (37) are installed on the upper surface of a concave die plate (36) on the circumferential outer side of the concave die (34) at intervals, the positioning blocks (37) extend upwards, the top surfaces of the positioning blocks (37) are higher than the top surface of the concave die (34), and the material sheet (33) is located among the positioning blocks (37).
5. The cylindrical rolling type flanging die of claim 1, wherein: the upper surface of the lower die holder (31) positioned outside the edge of the concave die plate (36) is also provided with an anti-side block (32), and a gap is arranged between the anti-side block (32) and the edge of the concave die (34); when the die is closed, the inner side of the bottom end of the flanging knife block (15) is close to the material sheet (33), the inner side of the flanging knife block (15) moves downwards along the side of the female die (34) along with the flanging position of the material sheet (33), and the outer side of the knife block seat (14) is closely attached to the inner side of the anti-side block (32) and moves downwards relatively.
6. The cylindrical rolling type flanging die of claim 1, wherein: the bottom surfaces of the upper die base (13) at the four corners of the material pressing base (17) are respectively provided with an inner limiting block (22), and the bottom end of the inner limiting block (22) is touched with the top surface of the material pressing base (17) when the nitrogen spring (20) is compressed.
7. The cylindrical rolling type flanging die of claim 1, wherein: the top surface of the lower die holder (31) positioned at the outer side of the concave die plate (36) is provided with balance columns (42) at intervals, and in the die closing process, the top surfaces of the balance columns (42) are in contact with the bottom surface of the pressure plate (18); the number of the balance columns (42) is four, and the four balance columns (42) are positioned right below four corners of the bottom surface of the pressure plate (18).
8. The cylindrical rolling type flanging die of claim 1, wherein: four corners of the opposite surfaces of the upper die holder (13) and the lower die holder (31) are provided with a guide sleeve (19) and a guide post (40) which are matched with each other; an outer upper limiting block (10) is arranged on the bottom surface of the upper die holder (13) positioned outside the guide sleeve (19), and an outer lower limiting block (41) is arranged on the top surface of the lower die holder (31) positioned outside the guide post (40); when the die is closed, the outer upper limit block (10) touches the outer lower limit block (41).
9. The cylindrical rolling type flanging die of claim 1, wherein: lower bolster (30) are installed to lower bolster (31) bottom surface, and lower bolster (30) are greater than lower bolster (31) and correspond the distance between the relative limit, and fork truck piece (39) are installed to the equal interval in the edge on this relative limit of lower bolster (30) top surface that is located the lower bolster (31) outside, and lug (38) are still installed to lower bolster (30) top surface that is located the fork truck piece (39) outside.
10. The cylindrical rolling type flanging die of claim 1, wherein: an upper template (11) is arranged on the top surface of the upper die holder (13) at intervals, and a pad (12) is arranged in the interval between the bottom surface of the upper template (11) and the top surface of the upper die holder (13); the top surface of the upper template (11) is installed with an external press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021637475.9U CN212945020U (en) | 2020-08-07 | 2020-08-07 | Cylinder rolling type flanging die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021637475.9U CN212945020U (en) | 2020-08-07 | 2020-08-07 | Cylinder rolling type flanging die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212945020U true CN212945020U (en) | 2021-04-13 |
Family
ID=75348784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021637475.9U Active CN212945020U (en) | 2020-08-07 | 2020-08-07 | Cylinder rolling type flanging die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212945020U (en) |
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2020
- 2020-08-07 CN CN202021637475.9U patent/CN212945020U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A cylindrical rolling flanging die Effective date of registration: 20210928 Granted publication date: 20210413 Pledgee: Bank of Jiangsu Wuxi branch Limited by Share Ltd. Huishan Pledgor: WUXI ZHUHUA MACHINERY TECHNOLOGY Co.,Ltd. Registration number: Y2021320010394 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 18, Ouyang Road, Luoshe Town, Wuxi City, Jiangsu Province Patentee after: Wuxi Huaguang Auto Parts Technology Co.,Ltd. Address before: No. 18, Ouyang Road, Luoshe Town, Wuxi City, Jiangsu Province Patentee before: WUXI ZHUHUA MACHINERY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |