CN114833218A - Straightening device for titanium alloy material processing - Google Patents
Straightening device for titanium alloy material processing Download PDFInfo
- Publication number
- CN114833218A CN114833218A CN202210484056.3A CN202210484056A CN114833218A CN 114833218 A CN114833218 A CN 114833218A CN 202210484056 A CN202210484056 A CN 202210484056A CN 114833218 A CN114833218 A CN 114833218A
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- CN
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- Prior art keywords
- straightening roller
- straightening
- transmission shaft
- roller group
- titanium alloy
- 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.)
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Links
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 16
- 239000000956 alloy Substances 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000001125 extrusion Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the technical field of bar straightening equipment, and discloses a straightening device for processing a titanium alloy material, which comprises a straightening roller set, wherein a transmission shaft is in transmission connection with the interior of the straightening roller set, pressure rings are arranged on the outer surface of the transmission shaft in a hanging manner and are in transmission connection with the inner cavity of the straightening roller set, an annular curved surface matched with the outer surface of a metal bar is arranged on the outer surface of the straightening roller set, a group of pressure rings are respectively arranged on the front side and the rear side of the inner cavity of the straightening roller set, and a linkage shaft is fixedly arranged between the two groups of pressure rings and in the inner cavity of the straightening roller set. The straightening device for processing the titanium alloy material can transmit the rotating moment to the metal bar and the reverse acting force of the metal bar with larger bending degree to the elastic clamp spring for the pressure ring and the upper structure thereof, and can force the straightening roller group to eccentrically move relative to the central axis of the transmission shaft.
Description
Technical Field
The invention relates to the technical field of bar straightening equipment, in particular to a straightening device for processing a titanium alloy material.
Background
The straightener is used for improving the straightness of the section or the bar by applying pressure to the section or the bar, so that the section or the bar meets the requirements of subsequent processing or use, the stress deformation phenomenon of the section or the bar in the production or processing process can be effectively solved, the precision of the section or the bar in the production or processing process is further effectively improved, and the straightener is widely applied to the field of processing various sections or bars.
The straightening machine for producing or processing the bar mainly depends on an upper group of straightening rollers and a lower group of straightening rollers with concave centers to apply pressure to the bar in the middle, drives the bar on the straightening machine to rotate and move forwards, and simultaneously implements the straightening action on the bar, and the bar is continuously rotated and pressed during straightening, so that the straightening device has extremely high precision on the straightening of the bar.
However, the distance between two groups of straightening rollers on the straightening device is fixed, so that the straightening pressures applied to bars with different bending degrees are the same, and further, when a bar with a larger bending degree is straightened, fatigue damage is easily caused to the inside of the bar due to overlarge single extrusion feeding amount, and when a bar with an overlarge bending process is straightened, the phenomenon of excessive abrasion of the surface of the bar is also caused due to overlarge pressure applied to the straightening rollers, the service life of the bar is influenced, and meanwhile, the straightening precision of the bar is greatly influenced, and the stability and the reliability are poorer.
Therefore, a straightening device for bar production or processing is needed to solve the above-mentioned defects of the prior straightening device in straightening the bar.
Disclosure of Invention
Technical problem to be solved
The invention provides a straightening device for processing a titanium alloy material, which has the advantages of slowly deforming a bar with larger bending degree by gradually applying extrusion feeding amount until the straightness reaches the requirement, avoiding fatigue damage in the bar due to overlarge extrusion feeding amount and avoiding excessive abrasion on the surface of a straightening roller, along with high stability and reliability, and solves the problems that the distance between two groups of straightening rollers on the existing straightening device for the bar is fixed, so that the fatigue damage in the bar is easily caused due to the overlarge extrusion feeding amount of a single time when the straightening device straightens the bar with larger bending degree, and the excessive abrasion on the surface of the bar due to overlarge pressure on the straightening roller when the straightening device straightens the bar with overlarge bending degree, the straightening precision, stability and reliability of the rod material are greatly influenced while the service life of the rod material is influenced.
(II) technical scheme
The invention provides the following technical scheme: a straightening device for processing a titanium alloy material comprises two groups of straightening roller sets which are arranged at a certain angle, a metal bar is connected between the two groups of straightening roller sets in an extrusion transmission manner, a transmission shaft is connected to the inner portion of each straightening roller set in a transmission manner, pressure rings are arranged on the outer surface of the transmission shaft in a hanging manner and are in transmission connection with an inner cavity of each straightening roller set, an annular curved surface matched with the outer surface of the metal bar is arranged on the outer surface of each straightening roller set, a first clamping block is fixedly arranged in the inner wall of each straightening roller set, a group of pressure rings are respectively arranged on the front side and the rear side of the inner cavity of each straightening roller set, a linkage shaft is fixedly arranged between the two groups of pressure rings and located in the inner cavity of each straightening roller set, a second clamping block matched with the first clamping block on each straightening roller set is fixedly arranged in the middle of the outer surface of the transmission shaft, and clamping grooves are formed in the outer surface of the transmission shaft, and the end surface of the first clamping block extends to the inside of the clamping groove on the transmission shaft.
Preferably, the end face of the pressure ring is elastically connected with the inner walls of the straightening roller sets through elastic clamp springs fixedly mounted on the pressure ring, and therefore corresponding extrusion feeding pressure can be applied to the metal bar between the two straightening roller sets.
Preferably, the outer surface of the straightening roller group is provided with an annular curved surface matched with the outer surface of the metal bar.
Preferably, the inner diameter of the pressure ring is larger than the outer diameters of the two sides of the outer surface of the transmission shaft, so that the straightening roller group can eccentrically move relative to the central axis of the transmission shaft under the action of the elastic clamp spring when being excessively extruded.
Preferably, the maximum track circle diameter formed by the end face of the second fixture block on the transmission shaft is smaller than the inner diameter of the middle part of the inner cavity of the straightening roller group.
Preferably, an included angle towards the inner side is formed between the end face of the second clamping block on the transmission shaft and the adjacent end face of the first clamping block on the straightening roller group, and the linkage shaft on the pressure ring is clamped in the included angle.
(III) advantageous effects
The invention has the following beneficial effects:
1. the straightening device for processing the titanium alloy material can drive the straightening roller group to rotate along with the rotation of the transmission shaft and can also force the straightening roller group to eccentrically move relative to the transmission shaft when the straightening roller group receives larger reverse acting force by arranging the first clamping block on the straightening roller group, the second clamping block on the transmission shaft and the linkage shaft.
2. This straightener is used in titanium alloy material processing to pressure ring and the setting of structure on it, both can transmit the moment of rotation to metal bar, can transmit the reverse effort of the metal bar of great bending degree that the straightening roller set received to the elasticity jump ring again, and can force the straightening roller set to take place the eccentric motion for the transmission shaft axis, and the accessible adjusts its extrusion feed pressure to metal bar production of elasticity jump ring's elasticity size and adjustment, so that it satisfies the aligning demand to different specification metal bars, and then effectively improved this straightener's application scope.
Drawings
FIG. 1 is a schematic view of the present invention in a straightening operation for a metal bar;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view showing the internal structure of a straightening roll group according to the present invention;
FIG. 4 is a schematic structural view of a propeller shaft according to the present invention;
fig. 5 is a partial front view of the inventive structure.
In the figure: 1. a straightening roller set; 2. a metal bar; 3. a drive shaft; 4. a pressure ring; 5. a first clamping block; 6. a second fixture block; 7. a card slot; 8. an annular curved surface; 9. a linkage shaft; 10. and an elastic clamp spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a straightening device for processing titanium alloy materials comprises two groups of straightening roller sets 1 arranged at a certain angle, a metal bar 2 is connected between the two groups of straightening roller sets 1 in a squeezing transmission manner, as shown in fig. 2, a transmission shaft 3 is connected in the straightening roller sets 1 in a transmission manner, the straightening roller sets 1 are in transmission connection with a power output mechanism in the straightening device through the transmission shaft 3, a pressure ring 4 is arranged on the outer surface of the transmission shaft 3 in a hanging manner and is in transmission connection with an inner cavity of the straightening roller sets 1, as shown in fig. 3, an annular curved surface 8 matched with the outer surface of the metal bar 2 is arranged on the outer surface of the straightening roller sets 1, when the straightening roller sets 1 rotate, the metal bar 2 can be driven to rotate forwards, first clamping blocks 5 arranged in an annular array manner are fixedly arranged in the inner wall of the straightening roller sets 1, and a group of pressure rings 4 are respectively arranged at the front side and the rear side of the inner cavity of the straightening roller group 1, a linkage shaft 9 is fixedly arranged between the two groups of pressure rings 4 and in the inner cavity of the straightening roller group 1 for transmitting the reverse pressure applied to the straightening roller group 1, as shown in fig. 4, a second clamping block 6 matched with the first clamping block 5 on the straightening roller group 1 is fixedly arranged in the middle of the outer surface of the transmission shaft 3, and transmits the rotating torque in the transmission shaft 3 to the straightening roller group 1 under the action of the linkage shaft 9 on the pressure rings 4 and drives the transmission shaft to rotate along with the rotating torque, clamping grooves 7 arranged in an annular array are arranged on the outer surface of the transmission shaft 3, and the end surface of the first clamping block 5 extends into the clamping grooves 7 on the transmission shaft 3.
In the technical scheme, the end face of the pressure ring 4 is elastically connected with the inner walls of the straightening roller sets 1 through the elastic clamp springs 10 fixedly installed on the pressure ring, so that corresponding extrusion feeding pressure can be applied to the metal bar 2 between the two straightening roller sets 1, and the extrusion feeding pressure of the pressure ring on the metal bar 2 can be adjusted by adjusting the elastic force of the elastic clamp springs 10, so that the straightening requirements on the metal bars 2 of different specifications are met.
In the technical scheme, the outer surface of the straightening roller group 1 is provided with an annular curved surface 8 matched with the outer surface of the metal bar 2, and when the straightening roller group 1 rotates, the metal bar 2 can be driven to rotate forwards along with the annular curved surface.
In the technical scheme, the inner diameter of the pressure ring 4 is larger than the outer diameters of two sides of the outer surface of the transmission shaft 3, so that the straightening roller group 1 can eccentrically move relative to the central axis of the transmission shaft 3 under the action of the elastic clamp spring 10 when being excessively extruded.
As shown in fig. 5, in the present technical solution, the maximum diameter of the track circle formed by the end surface of the second fixture 6 on the transmission shaft 3 is smaller than the inner diameter of the middle part of the inner cavity of the straightening roller group 1, so as to leave sufficient space when the straightening roller group 1 eccentrically moves and prevent the second fixture 6 on the transmission shaft 3 from interfering with the inner wall of the straightening roller group 1 in the process.
In the technical scheme, an included angle towards the inner side is formed between the end face of the second fixture block 6 on the transmission shaft 3 and the adjacent end face of the first fixture block 5 on the straightening roller group 1, and the linkage shaft 9 on the pressure ring 4 is clamped in the included angle, so that the straightening roller group 1 can be driven to rotate along with the included angle when the transmission shaft 3 rotates, and meanwhile, the elastic clamp spring 10 on the straightening roller group 1 is forced to move in the corresponding direction along with the linkage shaft 9 on the pressure ring 4 when the straightening roller group 1 eccentrically moves, and the metal bar 2 is prevented from being excessively extruded and fed while the straightening pressure formed on the metal bar 2 is kept.
The use method and the working principle of the embodiment are as follows:
the transmission system and the control system on the straightening device are fixedly installed according to the content, the transmission shaft 3 is driven by a power output mechanism in the transmission system, the straightening roller group 1 is driven to rotate along with the transmission action of the first clamping block 5 on the straightening roller group 1, the second clamping block 6 on the transmission shaft 3 and the elastic clamping spring 10 on the pressure ring 4 between the first clamping block and the second clamping block, and then the metal bar 2 between the first clamping block and the second clamping block is forced to rotate along with the metal bar to move forwards in the continuous rotation process of the straightening roller group 1, so that the metal bar can be straightened in all directions;
when the degree of bending of the metal bar 2 is large, the roll sets 1 in the corresponding positions receive reaction forces in opposite directions when the portion enters between the two roll sets 1, thereby forcing the straightening roller group 1 to generate eccentric movement relative to the central axis of the transmission shaft 3, transmitting force to the elastic clamp spring 10 on the straightening roller group under the action of the linkage shaft 9 on the pressure ring 4 so as to deform the straightening roller group in the corresponding direction, while maintaining the straightening pressure on the metal bar 2, at the same time, the extrusion feed amount of the metal bar 2 to the straightening roll group 1 is reduced, so that the straightening apparatus gradually applies the extrusion feed amount to the metal bar 2 having a large degree of bending to perform the straightening action thereto, and the phenomenon that fatigue damage is formed in the bar due to overlarge extrusion feeding amount and the surface of the straightening roll is not excessively abraded is avoided.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a straightener is used in titanium alloy material processing, is two sets of straightening roller group (1) that certain angle was arranged including two sets of extrusion transmission is connected with metal bar (2) between straightening roller group (1), the internal drive of straightening roller group (1) is connected with transmission shaft (3), and unsettled the arranging of surface at transmission shaft (3) pressure ring (4) to form the transmission between the inner chamber with straightening roller group (1) and be connected its characterized in that: the outer surface of straightening roller set (1) is equipped with outer surface matched with annular curved surface (8) with metal rod (2), fixed mounting has first fixture block (5) in the inner wall of straightening roller set (1), and is equipped with a set of pressure ring (4) respectively in both sides around straightening roller set (1) inner chamber, and is two sets of fixed mounting has universal driving shaft (9) in the inner chamber that just is located straightening roller set (1) between pressure ring (4), first fixture block (5) matched with second fixture block (6) on the middle part fixed mounting of transmission shaft (3) surface and straightening roller set (1), the surface of transmission shaft (3) is equipped with draw-in groove (7), and the terminal surface of first fixture block (5) extends to the inside of draw-in groove (7) on transmission shaft (3).
2. The straightening device for processing the titanium alloy material according to claim 1, wherein: the end face of the pressure ring (4) is in elastic connection with the inner walls of the straightening roller sets (1) through elastic clamp springs (10) fixedly installed on the pressure ring, and then corresponding extrusion feeding pressure can be applied to the metal bars (2) between the two straightening roller sets (1).
3. The straightening device for processing the titanium alloy material according to claim 2, wherein: the outer surface of the straightening roller group (1) is provided with an annular curved surface (8) matched with the outer surface of the metal bar (2).
4. The straightening device for processing the titanium alloy material according to claim 3, wherein: the inner diameter of the pressure ring (4) is larger than the outer diameters of two sides of the outer surface of the transmission shaft (3), so that the straightening roller group (1) can eccentrically move relative to the central axis of the transmission shaft (3) under the action of the elastic clamp spring (10) when being excessively extruded.
5. The straightening device for processing the titanium alloy material according to claim 4, wherein the straightening device comprises: the maximum track circle diameter formed by the end face of the second clamping block (6) on the transmission shaft (3) is smaller than the inner diameter of the middle part of the inner cavity of the straightening roller group (1).
6. The straightening device for titanium alloy material processing according to claim 5, wherein: an included angle towards the inner side is formed between the end face of the second clamping block (6) on the transmission shaft (3) and the adjacent end face of the first clamping block (5) on the straightening roller group (1), and a linkage shaft (9) on the pressure ring (4) is clamped in the included angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210484056.3A CN114833218B (en) | 2022-05-06 | 2022-05-06 | Straightening device for titanium alloy material processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210484056.3A CN114833218B (en) | 2022-05-06 | 2022-05-06 | Straightening device for titanium alloy material processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114833218A true CN114833218A (en) | 2022-08-02 |
| CN114833218B CN114833218B (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210484056.3A Active CN114833218B (en) | 2022-05-06 | 2022-05-06 | Straightening device for titanium alloy material processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114833218B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986652A (en) * | 1974-08-12 | 1976-10-19 | The Corey Steel Company | Feeding apparatus |
| DE19953138A1 (en) * | 1999-11-04 | 2001-05-31 | Sms Eumuco Gmbh | Straightening method for esp. bars and roller straightening machine with individually adjustable rollers and straightening in reversing operation |
| US20070017268A1 (en) * | 2005-07-20 | 2007-01-25 | Nakata Manufacturing Co., Ltd. | Metal pipe straightening method, straightening roller, and manufacturing device |
| DK201070148A (en) * | 2010-04-15 | 2011-10-16 | Pedax As | Bending of rod which is led in a curved path between rollers in a straightening |
| CN105057406A (en) * | 2015-08-13 | 2015-11-18 | 浙江超凡新材科技有限公司 | Uncoiling straightener |
| CN204996858U (en) * | 2015-08-13 | 2016-01-27 | 浙江超凡新材科技有限公司 | Decoiling and straightening machine |
| CN107838230A (en) * | 2017-12-02 | 2018-03-27 | 余姚市奥祥轴承有限公司 | A kind of bar material straightening mechanism |
| CN109226356A (en) * | 2018-10-31 | 2019-01-18 | 安徽科信矿山机械制造有限公司 | A kind of well cementation derrick bending bar recycling straightener |
| CN208583838U (en) * | 2018-06-08 | 2019-03-08 | 康丹华 | A kind of aluminum profile straightener for industry |
| CN215199069U (en) * | 2021-04-01 | 2021-12-17 | 江苏泰富恒通特种材料有限公司 | Straightening machine for processing polished silver bar of air valve steel |
-
2022
- 2022-05-06 CN CN202210484056.3A patent/CN114833218B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986652A (en) * | 1974-08-12 | 1976-10-19 | The Corey Steel Company | Feeding apparatus |
| DE19953138A1 (en) * | 1999-11-04 | 2001-05-31 | Sms Eumuco Gmbh | Straightening method for esp. bars and roller straightening machine with individually adjustable rollers and straightening in reversing operation |
| US20070017268A1 (en) * | 2005-07-20 | 2007-01-25 | Nakata Manufacturing Co., Ltd. | Metal pipe straightening method, straightening roller, and manufacturing device |
| DK201070148A (en) * | 2010-04-15 | 2011-10-16 | Pedax As | Bending of rod which is led in a curved path between rollers in a straightening |
| CN105057406A (en) * | 2015-08-13 | 2015-11-18 | 浙江超凡新材科技有限公司 | Uncoiling straightener |
| CN204996858U (en) * | 2015-08-13 | 2016-01-27 | 浙江超凡新材科技有限公司 | Decoiling and straightening machine |
| CN107838230A (en) * | 2017-12-02 | 2018-03-27 | 余姚市奥祥轴承有限公司 | A kind of bar material straightening mechanism |
| CN208583838U (en) * | 2018-06-08 | 2019-03-08 | 康丹华 | A kind of aluminum profile straightener for industry |
| CN109226356A (en) * | 2018-10-31 | 2019-01-18 | 安徽科信矿山机械制造有限公司 | A kind of well cementation derrick bending bar recycling straightener |
| CN215199069U (en) * | 2021-04-01 | 2021-12-17 | 江苏泰富恒通特种材料有限公司 | Straightening machine for processing polished silver bar of air valve steel |
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| Publication number | Publication date |
|---|---|
| CN114833218B (en) | 2023-09-08 |
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Effective date of registration: 20230811 Address after: No. 21, 10th Road, High tech Development Zone, Baoji City, Shaanxi Province, 721000 Applicant after: BAOJI JUCHENG TITANIUM INDUSTRY CO.,LTD. Address before: 351100 No. 34, Lane 936, Lihua West Avenue, Chengxiang District, Putian City, Fujian Province Applicant before: Zou Xiuyan |
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