CN105563049B - A kind of crescent gear pump solar month of 30 days block teeth processing technology - Google Patents
A kind of crescent gear pump solar month of 30 days block teeth processing technology Download PDFInfo
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- CN105563049B CN105563049B CN201610158351.4A CN201610158351A CN105563049B CN 105563049 B CN105563049 B CN 105563049B CN 201610158351 A CN201610158351 A CN 201610158351A CN 105563049 B CN105563049 B CN 105563049B
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- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000000047 product Substances 0.000 claims abstract description 7
- 238000001192 hot extrusion Methods 0.000 claims abstract description 6
- 239000006227 byproduct Substances 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910001651 emery Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000011430 maximum method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention discloses a kind of crescent gear pump solar month of 30 days block teeth processing technology, the solar month of 30 days block teeth section bar of strip is made using hot extrusion technique, then semicircle sheet solar month of 30 days block teeth are cut into, semicircle sheet solar month of 30 days block teeth are put into face grinding fixture one end face of mill on surface grinding machine, by product clamping in turn after milled, another end face is ground, product is put into afterwards and roughly grinds cylindrical after being clamped in the fixture of cylindrical grinding face, is then refined.The present invention is by setting face grinding fixture, it is ensured that end face and the cylindrical perpendicularity of solar month of 30 days block teeth, and improves end face processing efficiency, by using hot extrusion technique, make the compactness of material more preferably, hardness has also been lifted, wearability is added, production efficiency is higher than wire cutting 5 ~ 10 times.
Description
Technical field
The present invention relates to hydraulic pump manufacturing technology field, especially a kind of crescent gear pump solar month of 30 days block teeth processing technology.
Background technology
Solar month of 30 days block teeth are the parts that height force feed region is separated in crescent gear pump, generally with solar month block teeth
Pairing is used, and material is generally tin bronze, and its profile is a semicircle laminated structure, and the precision of its periphery and end face is to whole
The influence of pump is maximum, and conventional method is to use linear cutter, but linear cutter speed is slow, the part essence after machining
Spend low, surface roughness poor, the development of crescent gear pump is constrained to a certain extent, so in the urgent need to a kind of brand-new
Technique manufactures solar month of 30 days block teeth.
The content of the invention
The invention aims to solve in existing crescent gear pump solar month of 30 days block teeth process, linear cutter speed
Degree is slow, the problem of element precision after machining is low, surface roughness is poor.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of crescent gear pump
Solar month of 30 days block teeth processing technology, it is characterized in that having steps of：
(1) the solar month of 30 days block teeth section bar of strip is made using hot extrusion technique：First according to solar month of 30 days block teeth Section Design, manufacture
Go out mould, using extruder by the circle casting rod heated the extrusion molding from grinding tool；（2）The solar month of 30 days block teeth section bar of strip is pressed
Certain length is cut into semicircle sheet solar month of 30 days block teeth；（3）Semicircle sheet solar month of 30 days block teeth are put into face grinding fixture in surface grinding machine
One end face of upper mill, by product clamping in turn after milled, grinds another end face；（4）Product is put into cylindrical grinding face folder
Roughly grind cylindrical after being clamped in tool, then refine, product is removed from fixture after having ground, machined.
Described face grinding fixture is made up of one piece of rectangular steel part, and the surface of steel part is cut provided with 12 with solar month of 30 days block teeth
The consistent half slot in face, is provided with bolt hole, bolt hole in the side of half slot and puller bolt is housed, and puller bolt is used for will production
The side of product and half slot is fixed.
Described cylindrical grinding face fixture includes chuck body and device for exerting, and described chuck body includes mandrel, first
End face disc, movable holddown, second end face disk, hold-down bolt, described mandrel is cylindric, and center section is relatively large in diameter,
Two ends support section diameter is smaller, and center section is evenly arranged 3 solar month of 30 days block teeth mounting grooves, and the end of two ends support section is provided with
Center hole, mounting groove diameter of section is consistent with circular diameter in solar month of 30 days block teeth；Described first end face disk is fixedly mounted on mandrel
The left side of center section；Described second end face disk is fixedly mounted on the right side of mandrel center section by screw；Described
Movable holddown has 3, and is evenly arranged in the mounting groove of second end face disk, and movable holddown is cut with scissors by the mounting hole of bottom first
Connect on the second mounting hole of second end face disk, and bearing pin is installed in two mounting holes；Described hold-down bolt peace
In the screwed hole of the second end face disk at movable holddown rear portion, hold-down bolt is used for promoting movable holddown to compress small crescent moon
Block；
Described device for exerting includes screw shell, nut, travelling carriage, extension sleeve, compression spring, expansion link, swing
Frame, articulated stand, rolling wheel support, roller, described screw shell are slidably mounted on the mandrel on the left of chuck body；Described
Travelling carriage is slidably mounted on screw shell, and the outside of travelling carriage is provided with 3 body cradles；It is left that described nut is arranged on travelling carriage
Side, and coordinate installation with the threaded portion of screw shell；Described extension sleeve is hinged on the body cradle on the outside of travelling carriage；Institute
The expansion link one end stated is hingedly mounted on the left end of swing span, and the other end is slidably installed with extension sleeve, in extension sleeve
Compression spring is provided between expansion link；Described articulated stand has 3, and is evenly distributed on the outside of screw shell flange；Institute
The position that kept left in the middle part of the swing span stated is hingedly mounted on the end of articulated stand；The symmetrical peace in described rolling wheel support bottom
Equipped with 2 rollers, the low order end of swing span is hingedly mounted in the middle part of rolling wheel support；Device for exerting is promoted by adjusting nut
Travelling carriage is moved axially, and then drives swing span by extension sleeve, compression spring, expansion link, and swing span drives rolling again
Wheel support produces certain pressure by 2 pair of rollers solar month of 30 days block teeth surfaces, and the size of pressure is adjusted by nut, device for exerting
Effect be make the inner headed faces of solar month of 30 days block teeth before being clamped by movable holddown and mandrel on solar month of 30 days block teeth to install rooved face close
Laminating, eliminates gap, needs to pull down device for exerting after the completion of 3 solar month of 30 days block teeth are all clamped by movable holddown.
Preferably, the described solar month of 30 days unilateral stock removal of block teeth end face is 0.1 ~ 0.15mm, the cylindrical corase grind of solar month of 30 days block teeth
Measure 0.08 ~ 0.1mm, 0.03 ~ 0.05mm of fine grinding amount.
Preferably, the cylindrical corase grind of described solar month of 30 days block teeth uses 150 mesh vitrified bonding emery wheels, corase grind speed is
7~13 μm/s, fine grinding uses 300 mesh vitrified bonding emery wheels, and fine grinding speed is 3~5 μm/s.
The beneficial effects of the invention are as follows：
1. by setting face grinding fixture, it is ensured that end face and the cylindrical perpendicularity of solar month of 30 days block teeth, and improve end face
Processing efficiency.
2. by using hot extrusion technique, make the compactness of material more preferably, hardness has also been lifted, and adds wearability,
Production efficiency is higher than wire cutting 5 ~ 10 times.
3. the present invention grinds the periphery of solar month of 30 days block teeth using cylindrical grinding face fixture, improve solar month of 30 days block teeth outer surface circularity,
Cylindricity and surface roughness, improve yields.
Brief description of the drawings
Fig. 1 assembles dimensional structure diagram for the overall of the present invention.
Fig. 2 is present clip body and device for exerting isolating construction schematic diagram.
Fig. 3 is present clip body deployed configuration schematic diagram.
Fig. 4 is face grinding clamp workpiece clamping schematic diagram of the present invention.
Fig. 5 is core shaft structure schematic diagram of the present invention.
Fig. 6 is screw shell of the present invention and articulated stand scheme of installation.
Fig. 7 is solar month of 30 days block teeth schematic diagram of the invention.
Drawing reference numeral：1- mandrels；2- screw shells；3- nuts；4- travelling carriages；5- extension sleeves；6- compression springs；7- stretches
Contracting bar；8- swing spans；9- articulated stands；10- first end face disks；11- rolling wheel supports；12- rollers；13- solar month of 30 days block teeth；14-
Movable holddown；15- second end face disks；16- hold-down bolts；The mounting holes of 1401- first；The mounting holes of 1501- second.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment one
A kind of crescent gear pump solar month of 30 days block teeth processing technology, using external diameter as 80mm, internal diameter 70mm, width 50mm's is small
Exemplified by month block teeth, make according to the following steps：
First, the solar month of 30 days block teeth section bar of strip is made using hot extrusion technique：First according to solar month of 30 days block teeth Section Design, manufacture
Go out mould, using extruder by the circle casting rod heated the extrusion molding from grinding tool；
2nd, the solar month of 30 days block teeth section bar of strip is cut into semicircle sheet solar month of 30 days block teeth by certain length；
3rd, semicircle sheet solar month of 30 days block teeth 13 are put into face grinding fixture on surface grinding machine one end face of mill, milled it
Afterwards by product clamping in turn, another end face is ground；
4th, product is put into and roughly grinds cylindrical after being clamped in the fixture of cylindrical grinding face, then refined, by product from fixture after having ground
On remove, machine.
Described face grinding fixture is made up of one piece of rectangular steel part, and the surface of steel part is cut provided with 12 with solar month of 30 days block teeth
The consistent half slot in face, is provided with bolt hole, bolt hole in the side of half slot and puller bolt is housed.
Described cylindrical grinding face fixture includes chuck body and device for exerting, and described chuck body includes mandrel 1, first
End face disc 10, movable holddown 14, second end face disk 15, hold-down bolt 16, described mandrel 1 are cylindric, center section
It is relatively large in diameter, two ends support section diameter is smaller, center section is evenly arranged 3 solar month of 30 days block teeth mounting grooves, two ends support section
End be provided with center hole, mounting groove diameter of section is consistent with circular diameter in solar month of 30 days block teeth；Described first end face disk 10 is consolidated
Dingan County is mounted in the left side of the center section of mandrel 1；Described second end face disk 15 is fixedly mounted on the pars intermedia of mandrel 1 by screw
The right side divided；Described movable holddown 14 has 3, and is evenly arranged in the mounting groove of second end face disk 15, movable holddown
14 are hingedly mounted on the second mounting hole 1501 of second end face disk 15 by the first mounting hole of bottom 1401, and in two peaces
Dress installs bearing pin in hole；Described hold-down bolt 16 is arranged on the screwed hole of the second end face disk 15 at the rear portion of movable holddown 14
It is interior；
Described device for exerting includes screw shell 2, nut 3, travelling carriage 4, extension sleeve 5, compression spring 6, expansion link
7th, swing span 8, articulated stand 9, rolling wheel support 11, roller 12, described screw shell 2 are slidably mounted on the left of chuck body
On mandrel 1；Described travelling carriage 4 is slidably mounted on screw shell 2, and the outside of travelling carriage 4 is provided with 3 body cradles；Described
Nut 3 is arranged on the left side of travelling carriage 4, and coordinates installation with the threaded portion of screw shell 2；Described extension sleeve 5 is hinged on
On the body cradle in the outside of travelling carriage 4；Described one end of expansion link 7 is hingedly mounted on the left end of swing span 8, and the other end is with stretching
Contracting sleeve 5 is slidably installed, and compression spring 6 is provided between extension sleeve 5 and expansion link 7；Described articulated stand 9 has 3, and
It is evenly distributed on the outside of the flange of screw shell 2；The middle part of described swing span 8 position that keeps left is hingedly mounted on articulated stand 9
End；The described bottom of rolling wheel support 11 has been left and right symmetrically arranged 2 rollers 12, and the middle part of rolling wheel support 11 is hingedly mounted on pendulum
The low order end of moving frame 8.
Preferably, the described unilateral stock removal of the end face of solar month of 30 days block teeth 13 is 0.1mm, the cylindrical corase grind amount of solar month of 30 days block teeth 13
0.08mm, fine grinding amount 0.03mm.
Preferably, the cylindrical corase grind of described solar month of 30 days block teeth 13 uses 150 mesh vitrified bonding emery wheels, speed is roughly ground
For 7 μm/s, fine grinding uses 300 mesh vitrified bonding emery wheels, and fine grinding speed is 3 μm/s.
Above-described embodiment is the description of the invention, is not limitation of the invention, any simple transformation to the present invention
Structure, method afterwards belongs to protection scope of the present invention.
Operation principle of the present invention：The present invention grinds the moon two end faces of block teeth by face grinding fixture first when in use, has ground
It is put into afterwards in the mounting groove of solar month of 30 days block teeth 13 of plug center section, device for exerting is then inserted in the left side of mandrel 1, device for exerting leads to
Overregulate nut 3 to promote travelling carriage 4 to move axially, and then driven by extension sleeve 5, compression spring 6, expansion link 7
Swing span 8, swing span 8 drives rolling wheel support 11 to produce certain pressure, pressure to the surface of solar month of 30 days block teeth 13 by 2 rollers 12 again
The size of power is adjusted by nut 3, and the effect of device for exerting is that the inner headed face for making solar month of 30 days block teeth 13 is clamping it by movable holddown 14
Solar month of 30 days block teeth 13 on preceding and mandrel 1 are installed rooved face and are brought into close contact, and eliminate gap, all movable in 3 solar month of 30 days block teeth 13
Briquetting 14 needs to pull down device for exerting after the completion of clamping, then that chuck body is small mounted in two top upper mills of cylindrical grinder
Crescent moon it is cylindrical, solar month of 30 days block teeth 13 are removed after having ground, machined.
Claims (4)
1. a kind of crescent gear pump solar month of 30 days block teeth processing technology, it is characterized in that having steps of：
（1）The solar month of 30 days block teeth section bar of strip is made using hot extrusion technique：First according to solar month of 30 days block teeth Section Design, manufacture depanning
Tool, using extruder by the circle casting rod heated the extrusion molding from grinding tool；
（2）The solar month of 30 days block teeth section bar of strip is cut into semicircle sheet solar month of 30 days block teeth by certain length（13）；
（3）By semicircle sheet solar month of 30 days block teeth（13）It is put into face grinding fixture on surface grinding machine after one end face of mill, milled
By product clamping in turn, another end face is ground；
（4）Product is put into and roughly grinds cylindrical after being clamped in the fixture of cylindrical grinding face, then refines, tears product from fixture open after having ground
Get off, machine；
Described cylindrical grinding face fixture includes chuck body and device for exerting, and described chuck body includes mandrel（1）, first end
Face disk（10）, movable holddown（14）, second end face disk（15）, hold-down bolt（16）, described mandrel（1）To be cylindric,
Center section is relatively large in diameter, and two ends support section diameter is smaller, and center section is evenly arranged 3 solar month of 30 days block teeth mounting grooves, two ends
The end of support section is provided with center hole, and mounting groove diameter of section is consistent with circular diameter in solar month of 30 days block teeth；Described first end face
Disk（10）It is fixedly mounted on mandrel（1）The left side of center section；Described second end face disk（15）Fixed and pacified by screw
Mounted in mandrel（1）The right side of center section；Described movable holddown（14）There are 3, and be evenly arranged in second end face disk
（15）Mounting groove in, movable holddown（14）Pass through the mounting hole of bottom first（1401）It is hingedly mounted on second end face disk（15）
The second mounting hole（1501）On, and bearing pin is installed in two mounting holes；Described hold-down bolt（16）Installed in activity pressure
Block（14）The second end face disk at rear portion（15）Screwed hole in；
Described device for exerting includes screw shell（2）, nut（3）, travelling carriage（4）, extension sleeve（5）, compression spring（6）、
Expansion link（7）, swing span（8）, articulated stand（9）, rolling wheel support（11）, roller（12）, described screw shell（2）Slide peace
Mandrel on the left of chuck body（1）On；Described travelling carriage（4）It is slidably mounted on screw shell（2）On, travelling carriage（4）
Outside provided with 3 body cradles；Described nut（3）Installed in travelling carriage（4）Left side, and and screw shell（2）Threaded portion
Distribution, which is closed, installs；Described extension sleeve（5）It is hinged on travelling carriage（4）On the body cradle in outside；Described expansion link（7）One end
It is hingedly mounted on swing span（8）Left end, the other end and extension sleeve（5）It is slidably installed, in extension sleeve（5）With it is flexible
Bar（7）Between be provided with compression spring（6）；Described articulated stand（9）There are 3, and be evenly distributed on screw shell（2）Outside flange
Side；Described swing span（8）The middle part position that keeps left be hingedly mounted on articulated stand（9）End；Described rolling wheel support
（11）Bottom has been left and right symmetrically arranged 2 rollers（12）, rolling wheel support（11）Middle part be hingedly mounted on swing span（8）It is most right
End.
2. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterised in that：Described
Face grinding fixture is made up of one piece of rectangular steel part, and the surface of steel part is provided with 12 semicircles consistent with solar month of 30 days block teeth section
Groove, is provided with bolt hole, bolt hole in the side of half slot and puller bolt is housed.
3. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterised in that：Described
Solar month of 30 days block teeth（13）The unilateral stock removal of end face is 0.1 ~ 0.15mm, solar month of 30 days block teeth（13）0.08 ~ 0.1mm of cylindrical corase grind amount, essence
0.03 ~ 0.05mm of mill amount.
4. a kind of crescent gear pump solar month of 30 days block teeth processing technology according to claim 1, it is characterised in that：Described
Solar month of 30 days block teeth（13）Cylindrical corase grind use 150 mesh vitrified bonding emery wheels, corase grind speed is 7~13 μm/s, and fine grinding adopts
With 300 mesh vitrified bonding emery wheels, fine grinding speed is 3~5 μm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158351.4A CN105563049B (en) | 2016-03-21 | 2016-03-21 | A kind of crescent gear pump solar month of 30 days block teeth processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610158351.4A CN105563049B (en) | 2016-03-21 | 2016-03-21 | A kind of crescent gear pump solar month of 30 days block teeth processing technology |
Publications (2)
| Publication Number | Publication Date |
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| CN105563049A CN105563049A (en) | 2016-05-11 |
| CN105563049B true CN105563049B (en) | 2017-09-19 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106862475B (en) * | 2017-02-23 | 2018-12-25 | 江苏天毅冷镦股份有限公司 | The cold upsetting production technique of interior hexagonal studs blank |
| CN107672115A (en) * | 2017-09-11 | 2018-02-09 | 东莞市热恒注塑科技有限公司 | A kind of device for being used to install oval hot nozzle heating wire |
| CN108453479B (en) * | 2018-07-10 | 2019-08-20 | 山东禧龙石油装备有限公司 | A kind of processing technology assisting the pump housing |
| CN113752162A (en) * | 2021-09-29 | 2021-12-07 | 中国第一汽车股份有限公司 | Centre surrounding clamping type driving clamp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2299134B (en) * | 1995-03-23 | 1998-06-24 | Sauer Sundstrand Ltd | Internal gear pump |
| DE19615849B4 (en) * | 1996-04-20 | 2004-07-08 | Bosch Rexroth Ag | Internal gear machine (hydraulic pump or hydraulic motor) |
| CN101885050A (en) * | 2010-07-16 | 2010-11-17 | 吴江市液铸液压件铸造有限公司 | Process of casting gear pump rear cover |
| CN102619746A (en) * | 2012-02-29 | 2012-08-01 | 盐城市驰英机械科技有限公司 | Internal gear pump |
| CN103695701B (en) * | 2013-12-17 | 2016-04-13 | 宁波华液机器制造有限公司 | A kind of crescent moon block assembly for crescent gear pump and preparation method thereof |
| CN104233008B (en) * | 2014-09-24 | 2016-05-25 | 中色（天津）特种材料有限公司 | A kind of preparation method of gear pump body side plate |
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2016
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Effective date of registration: 20170817 Address after: 602, room 1, unit 3, Huaxia District, Jiaojiang District, Zhejiang, Taizhou, 318000 Applicant after: Li Yinxiao Address before: 426100 Yongzhou City, Hunan province Qiyang County Zitang stone town of Xichong village seven Group No. 126 Applicant before: Yang Ding |
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Effective date of registration: 20181116 Address after: Room 103-16, Building 5, 656 Qixing Road, Wuxing District, Huzhou City, Zhejiang Province, 313028 Patentee after: Huzhou Peiyou Incubator Co., Ltd. Address before: Room 602, Unit 1, Building 3, Huaxia District, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: Li Yinxiao |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190513 Address after: 223000 No. 3 Lantian Road, Wudun Town, Qingpu District, Huai'an City, Jiangsu Province Patentee after: Huaian Foster Hydraulic Technology Co., Ltd. Address before: Room 103-16, Building 5, 656 Qixing Road, Wuxing District, Huzhou City, Zhejiang Province, 313028 Patentee before: Huzhou Peiyou Incubator Co., Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 223000 No. 3 Lantian Road, Wudun Town, Qingpu District, Huai'an City, Jiangsu Province Patentee after: Huaian Foster Hydraulic Technology Co., Ltd. Address before: 223000 No. 3 Lantian Road, Wudun Town, Qingpu District, Huai'an City, Jiangsu Province Patentee before: Huaian Foster Hydraulic Technology Co., Ltd. |