CN107081644A - A kind of pipe fitting inner wall sanding apparatus - Google Patents
A kind of pipe fitting inner wall sanding apparatus Download PDFInfo
- Publication number
- CN107081644A CN107081644A CN201710342589.7A CN201710342589A CN107081644A CN 107081644 A CN107081644 A CN 107081644A CN 201710342589 A CN201710342589 A CN 201710342589A CN 107081644 A CN107081644 A CN 107081644A
- Authority
- CN
- China
- Prior art keywords
- chute
- pipe fitting
- servomotor
- push
- sliding block
- 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.)
- Granted
Links
Classifications
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/40—Single-purpose machines or devices for grinding tubes internally
-
- 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
- B24B41/02—Frames; Beds; Carriages
-
- 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
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a kind of pipe fitting inner wall sanding apparatus, including base, base top side is provided with the first push-rod electric machine, first sliding block is installed on the output shaft of the first push-rod electric machine, base top offers the first chute, first sliding block is slidably mounted in the first chute, and first sliding block extend to outside the first chute, one end that first sliding block is located at outside the first chute has been screwed the first servomotor, rotating disk is installed, the one end of the rotating disk away from the first servo motor output shaft offers the second chute on the output shaft of the first servomotor.The present invention is polished pipe fitting inner wall using cylindrical doubles bistrique, substantially increase grinding efficiency, and by the position for adjusting motor of being polished on disk, grinding head polishing can be more accurately controlled, make the precision of polishing higher, while fixture block is set to the adjustable pipe fitting enabled the invention to suitable for multiple diameter size.
Description
Technical field
The present invention relates to grinding technology field, more particularly to a kind of pipe fitting inner wall sanding apparatus.
Background technology
Polishing refers to grind or wipes implements surface, makes smooth exquisiteness, pipe fitting is the part that pipe is connected into pipeline, according to even
The method of connecing can be divided into socket fitting, threaded fitting, flanged fitting and the class of weld-end fittings four, use and pipe identical material system
Into having elbow (ell), flange, three-way pipe, four-way pipe and reduced pipe etc., elbow is used for the place of pipeline turning;Flange is used for
The part for making pipe be connected with each other with pipe, is connected to pipe end, and three-way pipe is used for the place that three pipes collect;Four-way pipe is used for
The place that four pipes collect;Reduced pipe is used for the place that the two tubes of different tube diameters are connected, with production technology not
Disconnected to improve, every profession and trade is to the accuracy of manufacture of all kinds of pipe fittings also more and more higher, so after formation of tubes, the inwall of pipe fitting can also be deposited
In many flaws, these flaw parts need to carry out careful polishing, and the polishing of current pipe fitting inner wall substantially still passes through people
The polishing of work bit by bit, this polishing mode not only labor intensive, and also polishing is extremely inefficient, and the precision of polishing is also poor,
And the demand of the quantization production of pipe fitting is carried out for factory at present, the mode of manual polishing is not catch up with production requirement much,
And manual polishing also considerably increases the cost of pipe fitting production, and in highly intelligentized today, this high cost is low-producing
Production model has not adapted to the development of productivity, how to solve this problem, to existing manufacturer with many puzzlements yet.
The content of the invention
The invention aims to solve shortcoming present in prior art, and a kind of pipe fitting inner wall polishing proposed is filled
Put.
To achieve these goals, present invention employs following technical scheme：
A kind of pipe fitting inner wall sanding apparatus, including base, base top side are provided with the first push-rod electric machine, the first push rod
First sliding block is installed, base top offers the first chute, and the first sliding block is slidably mounted on the first cunning on the output shaft of motor
In groove, and the first sliding block is extended to outside the first chute, and one end that the first sliding block is located at outside the first chute has been screwed first
Rotating disk is installed on servomotor, the output shaft of the first servomotor, and the first servomotor is arranged on the center of disk one end
Position, the one end of the rotating disk away from the first servo motor output shaft offers the second chute, if being provided with second chute
Slided in dry screw, the second chute and be provided with two the first fixed seats, and two the first fixed seats are symmetrically mounted in the second chute,
The corner of two the first fixed seats is equipped with fixing bolt, and fixing bolt is adapted with screw, two the first fixed seat centers
Position is mounted on being mounted on hollow stem on the second servomotor, the output shaft of two the second servomotors, and hollow stem is remote
Expansion link is movably installed with one end of second servo motor output shaft, and expansion link is extended to outside hollow stem, expansion link is located at
One end outside hollow stem is provided with the second fixed seat.
It is preferred that, the base top offers both sides in the 3rd chute, the 3rd chute and is mounted on the second push-rod electric machine,
Fixture block is equipped with two the second push-rod electric machine output shafts, two fixture blocks are slidably mounted in the 3rd chute, and two fixture blocks prolong
Extend outside the 3rd chute, the second push-rod electric machine model DTA1600.
It is preferred that, pipe fitting is folded between two fixture blocks, and the side that two fixture blocks are connected with pipe fitting is mounted on preventing
Sliding rubber blanket.
It is preferred that, some through holes are offered on the hollow stem, one end both sides that expansion link is located in hollow stem are opened up
There is circular hole, circular-hole internal-wall bottom is welded with one end of spring, and the one end of spring away from circular-hole internal-wall bottom is welded in the one of bayonet lock
End, bayonet lock is adapted with through hole, and bayonet lock is movably arranged in circular hole, and the one end of bayonet lock away from spring is extended to outside circular hole.
It is preferred that, the first sliding block both sides are equipped with limited block.
It is preferred that, the described one end of second fixed seat away from expansion link is provided with cylindrical grinding head.
It is preferred that, the first push-rod electric machine model DTA1000, the first servo motor model number is SM110-K160820,
Second servo motor model number is SM110-K120430.
Compared with prior art, the beneficial effects of the invention are as follows：
In the present invention, slided by base, the first push-rod electric machine, the first sliding block, the first chute, the first servomotor, rotating disk, second
Groove, the first fixed seat, screw, bolt, the second servomotor, hollow stem, expansion link, the second fixed seat, the 3rd chute, second push away
Bar motor, circular hole, spring, bayonet lock, through hole, pipe fitting, grinding head, fixture block, limited block are engaged, and constructing one kind can be to pipe fitting
Inside progress is quickly polished, the portable device that precision of polishing is high, and the first push-rod electric machine first promotes the first sliding block to be slided first
Back and forth movement in groove, can be accurately controlled grinding head back and forth movement on pipe fitting inner wall, and it mainly drives the by the first sliding block
One servomotor, the first servomotor drives disk, then drives grinding head by disk, wherein the limited block limitation on the first sliding block
First sliding block is moved on the skew brought, disk in the first chute and is engaged by the second chute with the first fixed seat, and
One fixed seat drives the second servomotor movable in the second chute, can be accurately positioned out pipe fitting inner wall position, and makes to beat
Bistrique can be close to pipe fitting inner wall, by adjusting two the first fixed seat positions, device can be made to be applied to multiple diameter size
The polishing work of pipe fitting, under the cooperation of bayonet lock, through hole and spring, makes expansion link to be stretched in hollow stem, and control is whole
The length of working beam, also operationally can firmly lock the two, in the presence of the second push-rod electric machine, and two fixture blocks of control exist
3rd chute is interior to move, the pipe fitting for being applicable to clamp multiple diameter size, and the anti-skid rubber cushion on fixture block will also make folder
Block energy firm grip pipe fitting, the present invention is polished pipe fitting inner wall using cylindrical doubles bistrique, substantially increases polishing effect
Rate, and by adjusting the position for motor of being polished on disk, can more be accurately controlled grinding head polishing, make the precision of polishing
It is higher, while fixture block is set to the adjustable pipe fitting enabled the invention to suitable for multiple diameter size.
Brief description of the drawings
Fig. 1 is a kind of overlooking the structure diagram of pipe fitting inner wall sanding apparatus proposed by the present invention.
Fig. 2 is a kind of positive structure diagram of pipe fitting inner wall sanding apparatus proposed by the present invention.
Fig. 3 is the structural representation of disk in a kind of pipe fitting inner wall sanding apparatus proposed by the present invention.
Fig. 4 is the structural representation of part A in a kind of pipe fitting inner wall sanding apparatus proposed by the present invention.
In figure：1 base, 2 first push-rod electric machines, 3 first sliding blocks, 4 first chutes, 5 first servomotors, 6 rotating disks, 7
Two chutes, 8 first fixed seats, 9 screws, 10 bolts, 11 second servomotors, 12 hollow stems, 13 expansion links, 14 second are fixed
Seat, 15 the 3rd chutes, 16 second push-rod electric machines, 17 circular holes, 18 springs, 19 bayonet locks, 20 through holes, 21 pipe fittings, 22 grinding heads, 23 folders
Block, 24 limited blocks.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
Reference picture 1-4, a kind of pipe fitting inner wall sanding apparatus, including base 1, the top side of base 1 are provided with first
First sliding block 3 is installed, the top of base 1 offers the first chute 4 on push-rod electric machine 2, the output shaft of the first push-rod electric machine 2, the
One sliding block 3 is slidably mounted in the first chute 4, and the first sliding block 3 is extended to outside the first chute 4, and the first sliding block 3 is located at first and slided
One end outside groove 4, which has been screwed on the first servomotor 5, the output shaft of the first servomotor 5, is provided with rotating disk 6, and the
One servomotor 5 is arranged on the center of the one end of disk 6, and the one end of the rotating disk 6 away from the output shaft of the first servomotor 5 is opened
Provided with the second chute 7, it is provided with some screws 9, the second chute 7 and is slided provided with two the first fixed seats in second chute 7
8, and two the first fixed seats 8 are symmetrically mounted in the second chute 7, the corner of two the first fixed seats 8 is equipped with fixing bolt
10, and fixing bolt 10 is adapted with screw 9, two centers of the first fixed seat 8 are mounted on the second servomotor 11, two
Hollow stem 12 is mounted on the output shaft of individual second servomotor 11, hollow stem 12 is away from the output shaft of the second servomotor 11
Expansion link 13 is movably installed with one end, and expansion link 13 is extended to outside hollow stem 12, expansion link 13 is located at outside hollow stem 12
One end is provided with the second fixed seat 14, and the top of base 1 offers both sides in the 3rd chute 15, the 3rd chute 15 and is mounted on
Fixture block 23 is equipped with second push-rod electric machine 16, two output shafts of the second push-rod electric machine 16, two fixture blocks 23 are slidably mounted on
In three chutes 15, and two fixture blocks 16 are extended to outside the 3rd chute 15, the model DTA1600 of the second push-rod electric machine 16, two folders
Pipe fitting 21 is folded between block 16, and two fixture blocks 16 are mounted on anti-skid rubber cushion with the side that pipe fitting 21 is connected, it is described
Some through holes 20 are offered on hollow stem 12, one end both sides that expansion link 13 is located in hollow stem 12 offer circular hole 17, circle
The inwall bottom of hole 17 is welded with one end of spring 18, and the one end of spring 18 away from the inwall bottom of circular hole 17 is welded in the one of bayonet lock 19
End, bayonet lock 19 is adapted with through hole 20, and bayonet lock 19 is movably arranged in circular hole 17, and one end extension of the bayonet lock 19 away from spring 18
To outside circular hole 17, the both sides of the first sliding block 3 are equipped with limited block 24, the described one end of second fixed seat 14 away from expansion link 13
Cylindrical grinding head 22, the model DTA1000 of the first push-rod electric machine 2, the model SM110- of the first servomotor 5 are installed
K160820, the model SM110-K120430 of the second servomotor 11.
When carrying out grinding process to a certain pipe fitting 21, pipe fitting is placed between the fixture block 23 of two, 1 top of base first, opened
Dynamic second push-rod electric machine 16, two the second push-rod electric machines 16 drive two fixture blocks 23 close to each other respectively, and two fixture blocks 23 are clamped
After pipe fitting 21, the second push-rod electric machine 16 is closed, then starts the first push-rod electric machine 2, the first push-rod electric machine 2 promotes the first sliding block 3
Move, due to the first servomotor 5, disk 6, the second servomotor 11, hollow stem 12, expansion link 13, beat in the first chute 4
The connection of bistrique 22 is integral, so all moved together with the first sliding block 3, until grinding head 22 enters in pipe fitting 21, closes the
One push-rod electric machine 2, then adjusts two the first fixed seats 8, until two grinding heads 22 can fit with the inwall of pipe fitting 21, adjusts
The length that section telescopic bar 13 stretches out, while starting the first servomotor 5 and the second servomotor 11, then disk 6 is rotated, grinding head
22 also begin to rotate polishing, and disk 6 drives the second servomotor 11 to rotate, 21 inwall of pipe fitting is polished for one week, according to beating
Mill situation restarts the first push-rod electric machine 2 and drives grinding head 22 to translate.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
1. a kind of pipe fitting inner wall sanding apparatus, including base（1）, it is characterised in that the base（1）Top side is provided with
One push-rod electric machine（2）, the first push-rod electric machine（2）Output shaft on the first sliding block is installed（3）, base（1）Top offers
One chute（4）, the first sliding block（3）It is slidably mounted on the first chute（4）It is interior, and the first sliding block（3）Extend to the first chute（4）
Outside, the first sliding block（3）Positioned at the first chute（4）Outer one end has been screwed the first servomotor（5）, the first servomotor
（5）Output shaft on rotating disk is installed（6）, and the first servomotor（5）Installed in disk（6）The center of one end, it is described
Rotating disk（6）Away from the first servomotor（5）One end of output shaft offers the second chute（7）, second chute（7）Inside it is provided with
Some screws（9）, the second chute（7）It is interior to slide provided with two the first fixed seats（8）, and two the first fixed seats（8）Symmetrical peace
Mounted in the second chute（7）It is interior, two the first fixed seats（8）Corner be equipped with fixing bolt（10）, and fixing bolt（10）With
Screw（9）It is adapted, two the first fixed seats（8）Center is mounted on the second servomotor（11）, two the second servos
Motor（11）Output shaft on be mounted on hollow stem（12）, hollow stem（12）Away from the second servomotor（11）The one of output shaft
Expansion link is movably installed with end（13）, and expansion link（13）Extend to hollow stem（12）Outside, expansion link（13）Positioned at hollow stem
（12）Outer one end is provided with the second fixed seat（14）.
2. a kind of pipe fitting inner wall sanding apparatus according to claim 1, it is characterised in that the base（1）Top is opened up
There is the 3rd chute（15）, the 3rd chute（15）Interior both sides are mounted on the second push-rod electric machine（16）, two the second push-rod electric machines
（16）Fixture block is equipped with output shaft（23）, two fixture blocks（23）It is slidably mounted in the 3rd chute, and two fixture blocks（23）Prolong
Extend the 3rd chute（15）Outside, the second push-rod electric machine（16）Model DTA1600.
3. a kind of pipe fitting inner wall sanding apparatus according to claim 2, it is characterised in that two fixture blocks（16）Between sandwiched
There is pipe fitting（21）, and two fixture blocks（16）With pipe fitting（21）The side being connected is mounted on anti-skid rubber cushion.
4. a kind of pipe fitting inner wall sanding apparatus according to claim 1, it is characterised in that the hollow stem（12）On open up
There are some through holes（20）, expansion link（13）Positioned at hollow stem（12）Interior one end both sides offer circular hole（17）, circular hole（17）
Inwall bottom is welded with spring（18）One end, spring（18）Away from circular hole（17）One end of inwall bottom is welded in bayonet lock（19）
One end, bayonet lock（19）With through hole（20）It is adapted, bayonet lock（19）It is movably arranged on circular hole（17）It is interior, and bayonet lock（19）Away from bullet
Spring（18）One end extend to circular hole（17）Outside.
5. a kind of pipe fitting inner wall sanding apparatus according to claim 1, it is characterised in that the first sliding block both sides are all provided with
Limited location block（24）.
6. a kind of pipe fitting inner wall sanding apparatus according to claim 1, it is characterised in that second fixed seat（14）Far
From expansion link（13）One end cylindrical grinding head is installed（22）.
7. a kind of pipe fitting inner wall sanding apparatus according to claim 1, it is characterised in that first push-rod electric machine（2）
Model DTA1000, the first servomotor（5）Model SM110-K160820, the second servomotor（11）Model SM110-
K120430。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342589.7A CN107081644B (en) | 2017-05-16 | 2017-05-16 | A kind of pipe fitting inner wall grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342589.7A CN107081644B (en) | 2017-05-16 | 2017-05-16 | A kind of pipe fitting inner wall grinding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107081644A true CN107081644A (en) | 2017-08-22 |
| CN107081644B CN107081644B (en) | 2019-05-21 |
Family
ID=59608075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710342589.7A Active CN107081644B (en) | 2017-05-16 | 2017-05-16 | A kind of pipe fitting inner wall grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107081644B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350912A (en) * | 2017-08-25 | 2017-11-17 | 宁波鄞州义旺电子科技有限公司 | A kind of high-end intelligent robot equipment |
| CN110524351A (en) * | 2019-09-04 | 2019-12-03 | 天长市华海电子科技有限公司 | Inner wall grinding device is used in a kind of processing of hardware casting pipe |
| CN111300183A (en) * | 2020-02-21 | 2020-06-19 | 潘雪军 | Fine processing device for boiler accessory fire grate segment after molding |
| CN111872776A (en) * | 2020-08-05 | 2020-11-03 | 李云明 | Spiral pipe inner wall weld joint polishing mechanism |
| CN111941235A (en) * | 2020-08-20 | 2020-11-17 | 湖南省宝满科技开发有限公司 | Automatic machine tool for grinding steel member for machining |
| CN112605178A (en) * | 2020-11-30 | 2021-04-06 | 常熟市欧迪管业有限公司 | Be used for titanium pipe wall correcting unit |
| CN112917267A (en) * | 2021-04-23 | 2021-06-08 | 程用房 | Polyethylene pipe forming system and forming process |
| CN112959184A (en) * | 2021-04-22 | 2021-06-15 | 牛腾龙 | Method for producing, manufacturing and finely machining reducing pipe |
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| CN106078421A (en) * | 2016-08-12 | 2016-11-09 | 无锡尊宝电动车有限公司 | A kind of component of machine produces uses efficient sanding apparatus |
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| JPH11254277A (en) * | 1998-03-04 | 1999-09-21 | Toyo Advanced Technologies Co Ltd | Internal grinding machine |
| CN204036169U (en) * | 2014-09-22 | 2014-12-24 | 马鞍山市天马冶金材料有限公司 | A kind of engine lathe with grinding function |
| CN104339249A (en) * | 2014-10-16 | 2015-02-11 | 黄石新兴管业有限公司 | Full-automatic internal grinding device for surface D5 of socket of ductile cast iron pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107350912A (en) * | 2017-08-25 | 2017-11-17 | 宁波鄞州义旺电子科技有限公司 | A kind of high-end intelligent robot equipment |
| CN107350912B (en) * | 2017-08-25 | 2018-08-31 | 高博集团有限公司 | A kind of high-end intelligent robot equipment |
| CN110524351A (en) * | 2019-09-04 | 2019-12-03 | 天长市华海电子科技有限公司 | Inner wall grinding device is used in a kind of processing of hardware casting pipe |
| CN111300183A (en) * | 2020-02-21 | 2020-06-19 | 潘雪军 | Fine processing device for boiler accessory fire grate segment after molding |
| CN111300183B (en) * | 2020-02-21 | 2021-11-09 | 江苏台正数控设备有限公司 | Fine processing device for boiler accessory fire grate segment after molding |
| CN111872776A (en) * | 2020-08-05 | 2020-11-03 | 李云明 | Spiral pipe inner wall weld joint polishing mechanism |
| CN111941235A (en) * | 2020-08-20 | 2020-11-17 | 湖南省宝满科技开发有限公司 | Automatic machine tool for grinding steel member for machining |
| CN112605178A (en) * | 2020-11-30 | 2021-04-06 | 常熟市欧迪管业有限公司 | Be used for titanium pipe wall correcting unit |
| CN112605178B (en) * | 2020-11-30 | 2021-11-05 | 常熟市欧迪管业有限公司 | Be used for titanium pipe wall correcting unit |
| WO2022110254A1 (en) * | 2020-11-30 | 2022-06-02 | 常熟市欧迪管业有限公司 | Correction device for titanium pipe walls |
| CN112959184A (en) * | 2021-04-22 | 2021-06-15 | 牛腾龙 | Method for producing, manufacturing and finely machining reducing pipe |
| CN112917267A (en) * | 2021-04-23 | 2021-06-08 | 程用房 | Polyethylene pipe forming system and forming process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107081644B (en) | 2019-05-21 |
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Effective date of registration: 20190404 Address after: 312500 Dongyuan Avenue, Yulin Street, Xinchang, Shaoxing City, Zhejiang Province Applicant after: XINCHANG HENGCHANG MACHINERY CO.,LTD. Address before: 528000 Building No. 2, 131 Jihua West Road, Chancheng District, Foshan City, Guangdong Province, No. 133, 404-405, fourth floor Applicant before: FOSHAN BIAOTIANXIA INFORMATION TECHNOLOGY CO.,LTD. |
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Denomination of invention: A device for polishing the inner wall of pipe fittings Effective date of registration: 20230823 Granted publication date: 20190521 Pledgee: Bank of China Limited by Share Ltd. Xinchang branch Pledgor: XINCHANG HENGCHANG MACHINERY CO.,LTD. Registration number: Y2023330001822 |