CN112222688A - Welding slag cleaning device of welded pipe unit - Google Patents
Welding slag cleaning device of welded pipe unit Download PDFInfo
- Publication number
- CN112222688A CN112222688A CN202011030791.4A CN202011030791A CN112222688A CN 112222688 A CN112222688 A CN 112222688A CN 202011030791 A CN202011030791 A CN 202011030791A CN 112222688 A CN112222688 A CN 112222688A
- Authority
- CN
- China
- Prior art keywords
- scraper
- welding slag
- plate
- welded pipe
- lifting plate
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 72
- 239000002893 slag Substances 0.000 title claims abstract description 69
- 238000004140 cleaning Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 claims description 21
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding slag cleaning device of a welded pipe unit, which comprises a frame body, a scraper mechanism and a cleaning mechanism, wherein the scraper mechanism is arranged on the frame body; the frame body comprises a bottom plate, two vertical plates fixed on the bottom plate, and a mounting plate and a supporting roller which are fixed between the two vertical plates; the scraper mechanism comprises a lifting plate, a lifting driving assembly, a scraper group and a limiting wheel; the lifting plate is matched on the mounting plate; the lifting driving assembly is arranged between the lifting plate and the mounting plate; the limiting wheels are positioned at two sides of the bottom of the lifting plate; the scraper group comprises a first scraper and a second scraper, and the first scraper and the second scraper are arranged on the lifting plate along the conveying direction of the welded pipe and can move up and down relative to the lifting plate; the cleaning mechanism comprises a drawing roller set and a collecting box; the collecting box is arranged on the two vertical plates, a drawing channel for welding slag to pass through is formed between the drawing roller sets, and the drawing channel draws the welding slag into the collecting box. The scraper can be used for a long time, and welding slag on the welded pipe can be effectively removed.
Description
Technical Field
The invention relates to the technical field of welded pipe units, in particular to a welding slag cleaning device of a welded pipe unit.
Background
In steel pipe production and processing enterprises, steel pipe production lines are widely used. The steel pipe is formed by cold bending and forming a plate, and then processing the plate by processes of internal and external butt welding and the like. In the automatic welding of steel pipes, the welding will generate welding slag on the welding bead, which must be removed before proceeding to the next process.
Adopt the form that sets up the scraper on the steel pipe transfer line to get rid of the welding slag on the steel pipe among the prior art, this welding slag removal mode among the prior art has the defect: 1. only one scraper is used, so that the service life of the scraper is short; 2. the scraped welding slag is accumulated on the periphery of the scraper, so that the cutting effect of the scraper on the welding slag is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a welding slag cleaning device of a welded pipe unit, which can ensure the long-time use of a scraper and effectively clean the welding slag on a welded pipe.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a welding slag cleaning device of welded tube unit, characterized by: comprises a frame body, a scraper mechanism and a cleaning mechanism;
the frame body comprises a bottom plate, two vertical plates fixed on the bottom plate, and a mounting plate and a supporting roller which are fixed between the two vertical plates;
the scraper mechanism comprises a lifting plate, a lifting driving assembly, a scraper group and a limiting wheel; the lifting plate can be vertically movably matched on the mounting plate; the lifting driving assembly is arranged between the lifting plate and the mounting plate so as to drive the lifting plate to move up and down; the limiting wheels are positioned on two sides of the bottom of the lifting plate, and a welded pipe channel is formed between the limiting wheels and the supporting roll;
the scraper group comprises a first scraper and a second scraper, and the first scraper and the second scraper are arranged on the lifting plate along the conveying direction of the welded pipe and can move up and down relative to the lifting plate;
the cleaning mechanism comprises a drawing roller set and a collecting box; the drawing roller sets and the collecting box are both arranged on the two vertical plates, drawing channels for welding slag to pass through are formed between the drawing roller sets, and the drawing channels draw the welding slag into the collecting box.
Preferably, the lifting driving assembly comprises a screw rod and a nut sleeve, the screw rod is vertically installed on the lifting plate, and the nut sleeve is fixed on the installation plate and matched with the screw rod.
Preferably, the front surface of the lifting plate is provided with an installation block, the installation block is provided with a first installation groove for assembling a first scraper and a second installation groove for assembling a second scraper, the installation block is provided with a plurality of locking bolts, and the end parts of the plurality of locking bolts respectively enter the first installation groove and the second installation groove to fix the first scraper and the second scraper.
Preferably, the first scraper and the second scraper are both installed on the installation block in an inclined state.
Preferably, a welding slag channel is formed in the position, corresponding to the position between the first mounting groove and the second mounting groove, of the mounting block.
Preferably, the cleaning mechanism further comprises a plurality of guide rollers, and the guide rollers are installed between the two vertical plates.
Preferably, the vertical plate is provided with a first hook, and the collecting box is provided with a second hook matched with the first hook.
Preferably, the traction roller group comprises a driving roller and a driven roller, and the driving roller and the supporting roller are connected through a synchronous belt.
Preferably, a plate frame is fixed on the left side face and the right side face of the bottom of the lifting plate through bolts, and the limiting wheels are mounted on the plate frame.
The invention has the advantages that:
1. the scraper group comprises a first scraper and a second scraper, so that secondary cutting of welding slag can be realized, the service life of the scraper group is ensured, and the cutting effect of the welding slag is improved;
2. the cut welding slag can be cleaned and collected through the cleaning mechanism, so that the environment-friendly effect can be improved, and the scraping quality of the scraper assembly on the welding slag can be improved;
3. in the process of scraping welding slag, the limiting wheel limits the welding pipe in conveying leftwards and rightwards, so that the stability of conveying the welding pipe is improved, and the quality of removing the welding slag is further improved;
4. through the lift drive assembly, can adjust the height of scraper group and spacing round for scraper group and welding slag effective contact, and spacing round are stabilized and are leaned on the steel pipe.
Drawings
FIG. 1 is a front view of a welding slag cleaning device of a welded pipe assembly provided in this embodiment;
FIG. 2 is a side view of a welding slag cleaning device of the welded pipe assembly provided in the present embodiment;
fig. 3 is a top view of the lifting plate and the mounting plate provided in this embodiment.
Detailed Description
The slag cleaning device of the welded pipe machine set of the present invention is further described with reference to fig. 1 to 3.
The utility model provides a welding slag cleaning device of welded tube unit, characterized by: comprises a frame body 1, a scraper mechanism 2 and a cleaning mechanism 3. The support body 1 comprises a bottom plate 11, two vertical plates 12 fixed on the bottom plate 11 through bolts, a mounting plate 14 fixed between the two vertical plates 12 through bolts and a supporting roller 13 mounted between the two vertical plates 12 through bearings, wherein the supporting roller 13 is positioned below the mounting plate 14. The scraper mechanism 2 comprises a lifting plate 21, a lifting driving component 24, a scraper group 22 and a limiting wheel 23; the lifting plate 21 can be vertically movably matched on the mounting plate 14; the lifting driving component 24 is arranged between the lifting plate 21 and the mounting plate 14 so as to drive the lifting plate 21 to move up and down; the two limiting wheels 23 are respectively positioned on the left side surface and the right side surface of the bottom of the lifting plate 21, and form a welded pipe channel with the supporting roller 13. The scraper group 22 includes a first scraper 221 and a second scraper 222, and the first scraper 221 and the second scraper 222 are arranged on the lifting plate 21 along the conveying direction of the welded pipe 5 and are vertically movably arranged relative to the lifting plate 21. The cleaning mechanism 3 comprises a drawing roller group 31 and a collecting box 33; the drawing roller group and the collection box 33 are both arranged on the two vertical plates 12, a drawing channel for the welding slag strip to pass through is formed between the drawing roller group 31, and the drawing channel draws the welding slag strip into the collection box 33.
During operation, the height of the lifting plate 21 is adjusted through the lifting driving assembly 24 according to the diameter of the welded pipe 5, so that the slag scraping end of the scraper group 22 is in contact with the welding slag of the welded pipe, and the limiting wheels are supported on the left side and the right side of the welded pipe 5; the welding slag on the welded pipe is cut by the scraper group 22 along with the conveying of the welded pipe 5, the cut welding slag forms a linear welding slag strip, and the welding slag strip is pulled and conveyed by the pulling roller group 31 and finally sent into a collecting box 33 to be collected. In the above process, the first scraper 221 is located at the front side of the second scraper 222, and the slag scraping end of the first scraper 221 is higher than that of the second scraper 222, so that the welding slag on the welded pipe 5 is scraped twice in a front-back manner, the thickness of the welding slag cut off by each scraper is reduced, the cutting of the welding slag can be facilitated, the loss of the scraper can be reduced, and the service life of the scraper can be prolonged.
The elevation driving assembly 24 includes a screw rod 241 and a nut bushing 242, the screw rod 241 is installed on the elevation plate 21 in a vertical state by a bearing, and the nut bushing 242 is fixed on the installation plate 14 and is engaged with the screw rod 241 while having an escape groove 213 at a rear surface of the elevation plate 21 for accommodating the nut bushing 242. With this structure, when the screw 241 is rotated, the screw 241 moves up and down together with the lifting plate 21 with respect to the mounting plate 14, thereby achieving the height adjustment function.
The mounting plate 14 has a stopper guide groove 141 extending vertically, and a stopper guide wall 214 engaged with the stopper guide groove 141 is formed on the rear surface of the elevating plate 21, so that the elevating plate 21 can be stably moved up and down on the mounting plate 14.
The front surface of the lifting plate 21 is fixed with an installation block 211 through bolts, the installation block 211 is provided with a first installation groove 2114 for assembling the first scraper 221 and a second installation groove 2115 for assembling the second scraper 222, meanwhile, the front surface of the installation block 211 is provided with a plurality of locking bolts, and the end parts of the plurality of locking bolts respectively enter the first installation groove 2114 and the second installation groove 2115 to fix the first scraper 221 and the second scraper 222. After the locking bolt is loosened, the scraper can move up and down in the mounting groove so as to adjust the distance between the scraper and the welded pipe 5; after the height adjustment of the scraper is completed, the locking bolt is tightened so that the end of the locking bolt abuts against the scraper, and the first scraper 221 and the second scraper 222 are fixed. Simple structure and convenient operation.
In order to facilitate the fixing of the first scraper 221 and the second scraper 222 in a front-back arrangement, the front surface of the mounting block 211 is provided in a stepped structure, and a first stepped surface 2112 and a second stepped surface 2111 are formed in tandem, while the length of the first scraper 221 is shorter than that of the second scraper 222, a locking bolt 51 for locking the first scraper 221 is located on the first stepped surface 2112, and a locking bolt 52 for locking the second scraper 222 is located on the second stepped surface 2111. Under this structure, after first scraper 221 and second scraper 222 were arranged in tandem on installation piece 211, be convenient for fix through the locking bolt, play the effect of dodging to the fixed of second scraper 222 promptly.
The first scraper 221 and the second scraper 222 are both installed on the installation block 211 in an inclined state. This structure can make scraping of scraper slag end and welded tube 5 form the contained angle, is convenient for remove the welding slag on the welded tube 5.
A welding slag channel 2113 is formed in the mounting block 211 at a position corresponding to a position between the first mounting groove 2114 and the second mounting groove 2115. The welding slag strips cut off by the second scraper 222 enter the drawing channel through the welding slag channel 2113 to be drawn, so that the welding slag strips cut off by the second scraper 222 can pass through conveniently, and the welding slag strips cut off by the first scraper 221 can pass through from the front surface of the first step surface 2112.
The cleaning mechanism 3 further comprises a plurality of guide rollers 32, and the guide rollers 32 are installed between the two vertical plates 12. The guide roller 32 is used for guiding the welding slag strip, and interference of the welding slag strip on the scraper group 22 in the process of being pulled is avoided.
The vertical plate 12 is provided with a first hook 121, and the collecting box 33 is provided with a second hook 331 matched with the first hook 121. This structure is convenient for the dismouting of collecting box 33, after the full welding slag strip of collection in collecting box 33, can pull down collecting box 33, changes overhead collecting box 33 and can continue to collect the welding slag, and simple structure not only can reach effectual collection effect moreover.
The bottom wall of the collecting box 33 is provided with a water outlet hole, the welding slag needs cooling water in the cutting process, so that part of the cooling water enters the collecting box 33 along with the welding slag strips, and the arrangement of the water outlet hole can discharge the cooling liquid entering the collecting box 33.
The drawing roller group 31 comprises a driving roller 312 and a driven roller 311, and the driving roller 312 and the supporting roller 13 are connected through a synchronous belt 4. The supporting roller 13 is driven by a transmission mechanism in the pipe welding unit. Under this structure, can realize the synchronous rotation of backing roll and drive roll 312, can be convenient for again to the tractive of welding slag strip, can save drive arrangement's in the tractive roller set 31 setting.
The driving roller and the driven roller are coated with rubber layers, the rubber layers can flexibly clamp the welding slag strips, and the possibility of fracture of the welding slag strips is reduced.
The left and right sides of lifter plate 21 bottom is passed through the bolt fastening and is had grillage 212, spacing wheel 23 is installed on grillage 212, and the dismouting of spacing wheel 23 on lifter plate 21 can be convenient for to this structure.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a welding slag cleaning device of welded tube unit, characterized by: comprises a frame body, a scraper mechanism and a cleaning mechanism;
the frame body comprises a bottom plate, two vertical plates fixed on the bottom plate, and a mounting plate and a supporting roller which are fixed between the two vertical plates;
the scraper mechanism comprises a lifting plate, a lifting driving assembly, a scraper group and a limiting wheel; the lifting plate can be vertically movably matched on the mounting plate; the lifting driving assembly is arranged between the lifting plate and the mounting plate so as to drive the lifting plate to move up and down; the limiting wheels are positioned on two sides of the bottom of the lifting plate, and a welded pipe channel is formed between the limiting wheels and the supporting roll;
the scraper group comprises a first scraper and a second scraper, and the first scraper and the second scraper are arranged on the lifting plate along the conveying direction of the welded pipe and can move up and down relative to the lifting plate;
the cleaning mechanism comprises a drawing roller set and a collecting box; the drawing roller sets and the collecting box are both arranged on the two vertical plates, drawing channels for welding slag to pass through are formed between the drawing roller sets, and the drawing channels draw the welding slag into the collecting box.
2. The welding slag cleaning device of the welded pipe unit as claimed in claim 1, wherein: the lifting driving assembly comprises a screw and a nut sleeve, the screw is vertically installed on the lifting plate, and the nut sleeve is fixed on the installation plate and matched with the screw.
3. The welding slag cleaning device of the welded pipe unit as claimed in claim 1, wherein: the mounting block is arranged on the front face of the lifting plate, a first mounting groove for assembling the first scraper and a second mounting groove for assembling the second scraper are formed in the mounting block, a plurality of locking bolts are assembled on the mounting block, and the end portions of the locking bolts respectively enter the first mounting groove and the second mounting groove to fix the first scraper and the second scraper.
4. The welding slag cleaning device of the welded pipe unit as claimed in claim 3, wherein: the first scraper and the second scraper are both installed on the installation block in an inclined state.
5. The welding slag cleaning device of the welded pipe unit as claimed in claim 3, wherein: and a welding slag channel is formed in the position, corresponding to the position between the first mounting groove and the second mounting groove, on the mounting block.
6. The welding slag cleaning device of the welded pipe unit as claimed in claim 1, wherein: the cleaning mechanism further comprises a plurality of guide rollers, and the guide rollers are installed between the two vertical plates.
7. The welding slag cleaning device of the welded pipe unit as claimed in claim 1, wherein: the vertical plate is provided with a first hook, and the collecting box is provided with a second hook matched with the first hook.
8. The welding slag cleaning device of the welded pipe unit as claimed in claim 1, wherein: the traction roller group comprises a driving roller and a driven roller, and the driving roller is connected with the supporting roller through a synchronous belt.
9. The welding slag cleaning device of the welded pipe unit as claimed in claim 1, wherein: and the left side surface and the right side surface of the bottom of the lifting plate are fixedly provided with plate frames through bolts, and the limiting wheels are arranged on the plate frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030791.4A CN112222688A (en) | 2020-09-27 | 2020-09-27 | Welding slag cleaning device of welded pipe unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030791.4A CN112222688A (en) | 2020-09-27 | 2020-09-27 | Welding slag cleaning device of welded pipe unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112222688A true CN112222688A (en) | 2021-01-15 |
Family
ID=74107793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011030791.4A Pending CN112222688A (en) | 2020-09-27 | 2020-09-27 | Welding slag cleaning device of welded pipe unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112222688A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669930A (en) * | 2022-05-31 | 2022-06-28 | 南通江淤新材料有限公司 | Welding equipment and welding method for corrosion-resistant alloy |
| CN114985330A (en) * | 2022-05-26 | 2022-09-02 | 安徽昊方机电股份有限公司 | Method and device for removing welding slag from crank disc |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227115A (en) * | 2014-08-14 | 2014-12-24 | 江苏龙源金属科技有限公司 | Scraper device for welded joint of welded tube |
| CN206326328U (en) * | 2016-12-05 | 2017-07-14 | 安徽兴林机械集团有限公司 | A kind of cleaning plant of built-up welder surface slag |
| CN110369774A (en) * | 2019-08-01 | 2019-10-25 | 张家港市中悦冶金设备科技有限公司 | A kind of outer welding slag removing device of welded tube |
| CN110369849A (en) * | 2019-01-30 | 2019-10-25 | 广州Jfe钢板有限公司 | A kind of rolling mill production line removes welding slag equipment |
-
2020
- 2020-09-27 CN CN202011030791.4A patent/CN112222688A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227115A (en) * | 2014-08-14 | 2014-12-24 | 江苏龙源金属科技有限公司 | Scraper device for welded joint of welded tube |
| CN206326328U (en) * | 2016-12-05 | 2017-07-14 | 安徽兴林机械集团有限公司 | A kind of cleaning plant of built-up welder surface slag |
| CN110369849A (en) * | 2019-01-30 | 2019-10-25 | 广州Jfe钢板有限公司 | A kind of rolling mill production line removes welding slag equipment |
| CN110369774A (en) * | 2019-08-01 | 2019-10-25 | 张家港市中悦冶金设备科技有限公司 | A kind of outer welding slag removing device of welded tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985330A (en) * | 2022-05-26 | 2022-09-02 | 安徽昊方机电股份有限公司 | Method and device for removing welding slag from crank disc |
| CN114985330B (en) * | 2022-05-26 | 2023-06-27 | 安徽昊方机电股份有限公司 | Method and device for removing welding slag by crank disc |
| CN114669930A (en) * | 2022-05-31 | 2022-06-28 | 南通江淤新材料有限公司 | Welding equipment and welding method for corrosion-resistant alloy |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 314300 south of xinyanhu line, Wuyuan street, Haiyan County, Jiaxing City, Zhejiang Province Applicant after: Zhejiang Heli New Material Co.,Ltd. Address before: 314300 south of xinyanhu line, Wuyuan street, Haiyan County, Jiaxing City, Zhejiang Province Applicant before: Zhejiang Heli Pipe Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |