CN104607641B - Spray forming pipe expansion core shaft - Google Patents
Spray forming pipe expansion core shaft Download PDFInfo
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- CN104607641B CN104607641B CN201510046568.1A CN201510046568A CN104607641B CN 104607641 B CN104607641 B CN 104607641B CN 201510046568 A CN201510046568 A CN 201510046568A CN 104607641 B CN104607641 B CN 104607641B
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- axle sleeve
- lobe
- fixed seat
- mandrel
- connecting rod
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Abstract
The invention relates to a spray forming pipe expansion core shaft which comprises a core shaft. The core shaft is sleeved with a shaft sleeve, the shaft sleeve and the core shaft are coaxially arranged, and an annular outer supporting space is reserved between the core shaft and the shaft sleeve; the shaft sleeve is composed of four or more shaft sleeve valves, the number of the shaft sleeve valves is an even number, and the lengths of the shaft sleeve valves are equal to the length of the shaft sleeve; the outer supporting space is further provided with outer supporting mechanisms, the number of the outer supporting mechanisms is equal to the number of the shaft sleeve valves, and the shaft sleeve valves are connected with the core shaft through the corresponding outer supporting mechanisms. By means of the spray forming pipe expansion core shaft, the movement of the shaft sleeve valves is achieved through the outer supporting mechanisms, so that the separation of the expansion core shaft and a tubular ingot blank is achieved; the spray forming pipe expansion core shaft has the advantages that the structure is simple and the usage is convenient.
Description
Technical field
The mandrel the present invention relates to a kind of reaction-injection moulding pipe rises, is mainly used in spray forming technology field.
Background technology
Spray forming technology be a kind of metal alloy making liquid in the presence of noble gases, formed solid-state, semisolid,
The vaporific molecule of liquid, these small granules are deposited in different collection utensils and will form different ingot blanks, than
Cylinder or flat board ingot blank will be formed as being deposited on the pallet of plane, if deposited on cylindric rotating catcher
On will form tubulose ingot blank.
And prior art will rise by mandrel when separating with tubulose ingot blank, need to manually carry out the manual mandrel that will rise and remove, this dismounting
Process needs the cohesive force rising between mandrel and tubulose ingot blank using specific purpose tool ability client, and this process takes time and effort.
Content of the invention
In order to solve the problems, such as prior art, the mandrel the invention provides a kind of reaction-injection moulding pipe rises, it is being injected into
After shape pipe is made, just can achieve that the mandrel that rises is separated with tubulose ingot blank by the structure of the mandrel that rises itself, have separating rate fast,
Effect is good, simple, quick the features such as.
The technical solution adopted in the present invention:
A kind of reaction-injection moulding pipe rises mandrel, including mandrel, described mandrel is arranged with axle sleeve, described axle sleeve and described mandrel
It is coaxially disposed, leave the outer support space of annular between described mandrel and described axle sleeve, described axle sleeve is by least 4 axle sleeve lobe groups
Become, and the quantity of described axle sleeve lobe is even number, the length of described axle sleeve lobe is equal to the length of described axle sleeve, described outer support space
Inside it is additionally provided with outer support mechanism, the quantity of described outer support mechanism is equal with the quantity of described axle sleeve lobe, described axle sleeve lobe passes through corresponding
Outer support mechanism be connected with described mandrel.
Preferably, described outer support mechanism includes two support units outward, and two described outer support units are respectively left outside support units
Support unit with outside the right side, described outer support unit includes fixed seat and connecting rod, and one end of connecting rod is hinged in described fixed seat, connecting rod
The other end is hinged on the inner side of described axle sleeve lobe accordingly, and described fixed seating is located on described mandrel, described fixed seat interior
Matched with the external diameter of described mandrel in footpath, the axes intersect of the axis of connecting rod and described mandrel.
Preferably, the quantity of described fixed seat is two, and two described fixed seats are respectively left fixed seat and right fixed seat,
, as the fixed seat of all described left outside support units, described right fixed seat is as all described right outer support units for described left fixed seat
Fixed seat.
Preferably, the axle sleeve lobe of even number is divided into two groups, respectively first group axle sleeve lobe and second group of axle sleeve lobe, and described
All axle sleeve lobes in one group of axle sleeve lobe are the first axle sleeve lobe, and all of axle sleeve lobe in described second group of axle sleeve lobe is
Two axle sleeve lobes, the structure all same of all described first axle sleeve lobes, the structure all same of all described second axle sleeve lobes, two groups of institutes
State axle sleeve lobe interval setting, identical length of connecting rod corresponding to all described first axle sleeve lobes etc., described first axle sleeve lobe institute
Corresponding connecting rod is first connecting rod, identical length of connecting rod corresponding to all described second axle sleeve lobes etc., described second axle sleeve
Connecting rod corresponding to lobe is second connecting rod, and the length of described first connecting rod is more than the length of described second connecting rod, described first axle
Set lobe the radian corresponding to inwall be more than described first axle sleeve lobe the radian corresponding to outer wall, described second axle sleeve lobe interior
Radian corresponding to wall is less than the radian corresponding to outer wall of described second axle sleeve lobe.
Further, the radian corresponding to outer wall of described first axle sleeve lobe is right positioned at the inwall institute of described first axle sleeve lobe
In the radian answered, the radian corresponding to inwall of described second axle sleeve lobe is located at the arc corresponding to outer wall of described second axle sleeve lobe
In degree.
Further, plane centered on the plane that the midpoint of the axis of described axle sleeve and described axle sleeve lobe inwall is constituted,
Described axle sleeve lobe can be symmetrical with respect to corresponding central plane.
Further, the pin joint of described left fixed seat and connecting rod be located at hinged between this connecting rod and corresponding axle sleeve lobe
The left side of point, described right fixed seat is located at the right side of the pin joint between this connecting rod and corresponding axle sleeve lobe with the pin joint of connecting rod
Side.
Preferably, the left side of described left fixed seat is additionally provided with circular right baffle-plate, and the right side of described right fixed seat also sets
There is circular right shell body, described right baffle-plate is fixedly connected with described left fixed seat, described right shell body is solid with described right fixed seat
Fixed connection, the both sides of described mandrel are also arranged with clamp nut, and two described clamp nuts are respectively left clamp nut and right pressures
Jack panel, described left clamp nut is arranged on the left side of described right baffle-plate, described left clamp nut and described mandrel thread cooperation,
Fitted with the left side of described right baffle-plate in the right side of described left clamp nut, described right clamp nut is arranged on the right side of described right shell body
Side, described right clamp nut and described mandrel thread cooperation, the right side patch of the left side of described right clamp nut and described right shell body
Close.
Further, described right baffle-plate is additionally provided with left block plate, described left block plate and described right baffle-plate are coaxially disposed, described
Right baffle-plate and described left block plate interval setting, are bolted to connection between the outer of described left block plate and described right baffle-plate,
On described left clamp nut, also fixation is arranged with the left nut collar, and the described left nut collar is arranged on described right baffle-plate and a described left side
In interval between block plate.
Further, described right shell body is additionally provided with right block plate, described right block plate and described right shell body are coaxially disposed, described
Right shell body and described right block plate interval setting, are bolted to connection between the outer of described right block plate and described right shell body,
On described right clamp nut, also fixation is arranged with the right nut collar, and the described right nut collar is arranged on described right shell body and the described right side
In interval between block plate.
Further, the inwall of described fixed seat offers the fixed seat keyway of left and right directions, the outer wall of described mandrel
On offer the mandrel keyway of left and right directions, pass through bonded between described fixed seat keyway and described mandrel keyway, described solid
Reservation keyway connects the left and right sides of described fixed seat.
Beneficial effects of the present invention:
The present invention realizes the motion of axle sleeve lobe by outer support mechanism, thus realization is risen, mandrel is separated with tubulose ingot blank, tool
Standby structure is simple, easy to use the features such as.
Brief description
Fig. 1 is the left view of the present invention；
Fig. 2 is the positive view of the present invention；
Fig. 3 is the sectional view of the present invention.
Wherein: 1, mandrel；2nd, axle sleeve lobe；3rd, fixed seat；4th, connecting rod；5th, clamp nut；6th, left block plate；7th, right baffle-plate；21、
First axle sleeve lobe；22nd, the second axle sleeve lobe.
Specific embodiment
Referring to Fig. 1-Fig. 3, the mandrel the present invention relates to a kind of reaction-injection moulding pipe rises, including mandrel 1, described mandrel is arranged with
Axle sleeve, described axle sleeve is coaxially disposed with described mandrel, leaves the outer support space of annular between described mandrel and described axle sleeve, described
Axle sleeve is made up of at least 4 axle sleeve lobes 2, and the quantity of described axle sleeve lobe is even number, and the length of described axle sleeve lobe is equal to described
The length of axle sleeve, is additionally provided with outer support mechanism, the quantity of the quantity of described outer support mechanism and described axle sleeve lobe in described outer support space
Equal, described axle sleeve lobe is passed through outer support mechanism accordingly and is connected with described mandrel.
Below so that 4 axle sleeve lobes are constituted axle sleeve as a example:
First it is noted that 4 axle sleeve lobes are arranged circumferentially the described axle sleeve of composition, appointing on same axle sleeve lobe left and right directions
The sectional view all same of meaning position, the edge of described axle sleeve lobe is the straight line of left and right directions.
4 axle sleeve lobes include 2 the first axle sleeve lobes 21 and 22,2 the first axle sleeve lobes of 2 the second axle sleeve lobes and 2 second
Axle sleeve lobe is crisscross arranged.
It can further be stated that the structure of 2 the first axle sleeve lobes is identical, in the same manner, the structure of 2 the second axle sleeve lobes is also identical.
Described outer support mechanism includes two and supports outward unit, two described outer respectively left outside support units of support unit and right outer support
Unit, described outer support unit includes fixed seat 3 and connecting rod 4, and one end of connecting rod is hinged in described fixed seat, the other end of connecting rod
It is hinged on the inner side of described axle sleeve lobe accordingly, described fixed seating is located on described mandrel, the internal diameter of described fixed seat and institute
The external diameter stating mandrel matches, the axes intersect of the axis of connecting rod and described mandrel, and the quantity of described fixed seat is two, two
Described fixed seat is respectively left fixed seat and right fixed seat, and described left fixed seat is as the fixation of all described left outside support units
Seat, described right fixed seat is as all described right outer fixed seats supportting unit.
During use, by pulling fixed seat, left fixed seat is moved to the left, and right fixed seat moves right simultaneously, is moved to the left
Left fixed seat necessarily drive one end of corresponding connecting rod to be moved to the left, in the same manner, right fixed seat drives one end of corresponding connecting rod
Move right, and the other end of this two connecting rods is all hinged on axle sleeve lobe, the speed phase of left fixed seat and right fixed seat movement
With, so just can ensure corresponding axle sleeve lobe remains stationary in the lateral direction, and the length of connecting rod be to maintain constant, so
Axle sleeve lobe will be pulled to move to mandrel, otherwise so that the reverse mandrel of axle sleeve lobe moves.
Because all of left outside support unit all shares a left fixed seat, all of right outer support one right fixation of units shared
Seat, so when mobile left fixed seat and right fixed seat, will drive all of outer support unit motion, thus realizing all
The motion (move to mandrel, or reverse mandrel moves) of axle sleeve lobe.
Inventor consider 4 axle sleeve lobes with same speed to mandrel mobile when, can be mutually between adjacent axle sleeve lobe
Producing and interfere, thus stoping axle sleeve lobe from moving inward, for excluding this situation, the translational speed of the first axle sleeve lobe need to be ensured relatively
Different in the speed of the second axle sleeve lobe, that is, the fast speed of speed is slow.
And the effect before will reaching, only need to ensure that the length of the connecting rod corresponding to the first axle sleeve lobe is not equal to the second axle sleeve
The length of the connecting rod corresponding to lobe.
The length assuming connecting rod corresponding to the first axle sleeve lobe is a, and the length of the connecting rod corresponding to the second axle sleeve lobe is b,
Speed v of the first axle sleeve lobe movementaSpeed v more than the second axle sleeve lobe movementb, then need to ensure that a > b can be that is to say, that connect
The length of bar is longer, and the translational speed of corresponding axle sleeve lobe is faster accordingly.
Speed in view of the first axle sleeve lobe movement is faster than the speed of the second axle sleeve lobe movement, the process reclaiming in axle sleeve lobe
In (axle sleeve lobe moves to mandrel, similarly hereinafter), the second axle sleeve lobe can not hinder the motion of the first axle sleeve lobe, just need to ensure first axle
The cross section of the both sides of set lobe is in "eight" shape.
Described " eight " shape is: the radian corresponding to inwall of described first axle sleeve lobe is more than the outer wall of described first axle sleeve lobe
Corresponding radian, and the radian corresponding to outer wall of described first axle sleeve lobe is positioned at corresponding to the inwall of described first axle sleeve lobe
Radian in.
Corresponding, the both sides of the second axle sleeve lobe are in inverted "eight" shape.It is exactly specifically, the inwall of described second axle sleeve lobe
Corresponding radian is less than the radian corresponding to outer wall of described second axle sleeve lobe, corresponding to the inwall of described second axle sleeve lobe
Radian is located in the radian corresponding to outer wall of described second axle sleeve lobe.
Preferably, the angle that the both sides of the first axle sleeve lobe tilt is equal, the angle of the both sides inclination of the second axle sleeve lobe
Equal.
Plane centered on the plane that the midpoint of the axis of described axle sleeve and described axle sleeve lobe inwall is constituted, described axle sleeve lobe
Symmetrical with respect to corresponding central plane.
Described left fixed seat is located at the left side of the pin joint between this connecting rod and corresponding axle sleeve lobe with the pin joint of connecting rod,
Described right fixed seat is located at the right side of the pin joint between this connecting rod and corresponding axle sleeve lobe with the pin joint of connecting rod.
By such setting it is ensured that the seat that fixes is moved to the left, when right fixation moves right, axle sleeve lobe returns
Receive, conversely, the motion of axle sleeve lobe reverse mandrel.
For convenience of the actual position reconciling axle sleeve lobe of user, following mechanism is set.
The left side of described left fixed seat is additionally provided with circular right baffle-plate 7, and the right side of described right fixed seat is additionally provided with annulus
The right shell body of shape, described right baffle-plate is fixedly connected with described left fixed seat, and described right shell body is fixedly connected with described right fixed seat,
The both sides of described mandrel are also arranged with clamp nut 5, and two described clamp nuts are respectively left clamp nut and right clamp nut,
Described left clamp nut is arranged on the left side of described right baffle-plate, described left clamp nut and described mandrel thread cooperation, a described left side
Fitted with the left side of described right baffle-plate in the right side of clamp nut, described right clamp nut is arranged on the right side of described right shell body, institute
State right clamp nut and described mandrel thread cooperation, fitted with the right side of described right shell body in the left side of described right clamp nut.
So right baffle-plate can be pressed by left clamp nut, right clamp nut presses right shell body, thus axle sleeve lobe is propped up,
After tubulose ingot blank shapes, clamp nut is unclamped, more left fixed seat is moved to the left, right fixed seat to have mobile just can be by
Axle sleeve lobe reclaims.
Left block plate 6 is additionally provided with described right baffle-plate, described left block plate and described right baffle-plate are coaxially disposed, described right baffle-plate with
Described left block plate interval setting, is bolted to connection between the outer of described left block plate and described right baffle-plate, described left pressure
On jack panel, also fixation is arranged with the left nut collar, and the described left nut collar is arranged between described right baffle-plate and described left block plate
Interval in, described right shell body is additionally provided with right block plate, described right block plate and described right shell body are coaxially disposed, described right shell body with
Described right block plate interval setting, is bolted to connection between the outer of described right block plate and described right shell body, described right pressure
On jack panel, also fixation is arranged with the right nut collar, and the described right nut collar is arranged between described right shell body and described right block plate
Interval in.
Turning left clamp nut by such setting will drive left fixed seat to be moved (left clamp nut accordingly
It is moved to the left, left fixed seat is also moved to the left, left clamp nut moves right, left fixed seat also moves right), in the same manner, right pressure
Jack panel also can drive right fixed seat to be moved accordingly.
The fixed seat keyway of left and right directions is offered on the inwall of described fixed seat, the outer wall of described mandrel offers a left side
The mandrel keyway of right direction, passes through bonded between described fixed seat keyway and described mandrel keyway, described fixed seat keyway is even
Lead to the left and right sides of described fixed seat.
The setting of keyway so that fixed seat can only move in the lateral direction, situation about will not rotate.
It should be noted that the quantity of axle sleeve lobe is not limited to 4, need to be only the quantity arbitrarily more than 4 of even number
?.
Claims (7)
1. a kind of reaction-injection moulding pipe rises mandrel, including mandrel it is characterised in that: be arranged with axle sleeve on described mandrel, described axle sleeve
It is coaxially disposed with described mandrel, leave the outer support space of annular between described mandrel and described axle sleeve, described axle sleeve is by least 4
Axle sleeve lobe forms, and the quantity of described axle sleeve lobe is even number, and the length of described axle sleeve lobe is equal to the length of described axle sleeve, described
It is additionally provided with outer support mechanism, the quantity of described outer support mechanism is equal with the quantity of described axle sleeve lobe, described axle sleeve lobe in outer support space
It is connected with described mandrel by outer support mechanism accordingly；
Described outer support mechanism includes two and supports outward unit, and two described outer respectively left outside support units of support unit and right outer support are single
Unit, described outer support unit includes fixed seat and connecting rod, and one end of connecting rod is hinged in described fixed seat, and the other end of connecting rod is hinged
In the inner side of described axle sleeve lobe accordingly, described fixed seating is located on described mandrel, the internal diameter of described fixed seat and described core
The external diameter of axle matches, the axes intersect of the axis of connecting rod and described mandrel；
The quantity of described fixed seat is two, and two described fixed seats are respectively left fixed seat and right fixed seat, described left fixation
, as the fixed seat of all described left outside support units, described right fixed seat is as all described right outer fixed seats supportting unit for seat；
The axle sleeve lobe of even number is divided into two groups, respectively first group axle sleeve lobe and second group of axle sleeve lobe, described first group of axle sleeve lobe
Interior all axle sleeve lobes are the first axle sleeve lobe, and all of axle sleeve lobe in described second group of axle sleeve lobe is the second axle sleeve lobe,
The structure all same of all described first axle sleeve lobes, the structure all same of all described second axle sleeve lobes, axle sleeve lobe described in two groups
Interval setting, identical length of connecting rod corresponding to all described first axle sleeve lobes etc., the company corresponding to described first axle sleeve lobe
Bar is first connecting rod, and identical length of connecting rod corresponding to all described second axle sleeve lobes etc., corresponding to described second axle sleeve lobe
Connecting rod be second connecting rod, the length of described first connecting rod is more than the length of described second connecting rod, described first axle sleeve lobe interior
Radian corresponding to wall is more than the radian corresponding to outer wall of described first axle sleeve lobe, corresponding to the inwall of described second axle sleeve lobe
Radian be less than described second axle sleeve lobe the radian corresponding to outer wall.
2. reaction-injection moulding pipe according to claim 1 rise mandrel it is characterised in that: the outer wall of described first axle sleeve lobe institute is right
The radian answered is located in the radian corresponding to inwall of described first axle sleeve lobe, the arc corresponding to inwall of described second axle sleeve lobe
Degree is located in the radian corresponding to outer wall of described second axle sleeve lobe.
3. reaction-injection moulding pipe according to claim 2 rise mandrel it is characterised in that: the axis of described axle sleeve and described axle sleeve
Plane centered on the plane that the midpoint of lobe inwall is constituted, described axle sleeve lobe is symmetrical with respect to corresponding central plane.
4. reaction-injection moulding pipe according to claim 1 rise mandrel it is characterised in that: described left fixed seat is hinged with connecting rod
Point is located at the left side of the pin joint between this connecting rod and corresponding axle sleeve lobe, and the pin joint of described right fixed seat and connecting rod is located at should
The right side of the pin joint between connecting rod and corresponding axle sleeve lobe.
5. the reaction-injection moulding pipe according to any one of claim 1-4 rise mandrel it is characterised in that: a left side for described left fixed seat
Side is additionally provided with circular right baffle-plate, and the right side of described right fixed seat is additionally provided with circular right shell body, described right baffle-plate and institute
State left fixed seat to be fixedly connected, described right shell body is fixedly connected with described right fixed seat, the both sides of described mandrel are also arranged with pressure
Jack panel, two described clamp nuts are respectively left clamp nut and right clamp nut, and described left clamp nut is arranged on described
The left side of right baffle-plate, described left clamp nut and described mandrel thread cooperation, the right side of described left clamp nut and described left gear
The left side laminating of plate, described right clamp nut is arranged on the right side of described right shell body, described right clamp nut and described mandrel spiral shell
Stricture of vagina coordinates, and is fitted with the right side of described right shell body in the left side of described right clamp nut.
6. reaction-injection moulding pipe according to claim 5 rise mandrel it is characterised in that: left gear is additionally provided with described right baffle-plate
Disk, described left block plate and described right baffle-plate are coaxially disposed, described right baffle-plate and described left block plate interval setting, described left block plate
It is bolted to connection between outer and described right baffle-plate, on described left clamp nut, also fixation is arranged with the left nut collar,
The described left nut collar is arranged in the interval between described right baffle-plate and described left block plate,
Right block plate is additionally provided with described right shell body, described right block plate and described right shell body are coaxially disposed, described right shell body with described
Right block plate interval setting, is bolted to connection between the outer of described right block plate and described right shell body, described right compression spiral shell
On mother, also fixation is arranged with the right nut collar, between the described right nut collar is arranged between described right shell body and described right block plate
Every interior.
7. reaction-injection moulding pipe according to claim 1 rise mandrel it is characterised in that: offer on the inwall of described fixed seat
The fixed seat keyway of left and right directions, the outer wall of described mandrel offers the mandrel keyway of left and right directions, described fixed seat keyway
Pass through bonded and described mandrel keyway between, described fixed seat keyway connects the left and right sides of described fixed seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046568.1A CN104607641B (en) | 2015-01-29 | 2015-01-29 | Spray forming pipe expansion core shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046568.1A CN104607641B (en) | 2015-01-29 | 2015-01-29 | Spray forming pipe expansion core shaft |
Publications (2)
| Publication Number | Publication Date |
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| CN104607641A CN104607641A (en) | 2015-05-13 |
| CN104607641B true CN104607641B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510046568.1A Active CN104607641B (en) | 2015-01-29 | 2015-01-29 | Spray forming pipe expansion core shaft |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239889B (en) * | 2016-08-31 | 2018-10-12 | 宁波菲仕运动控制技术有限公司 | A kind of Expansion core tool for facilitating carbon fiber pipe to process |
| CN109909343B (en) * | 2019-01-28 | 2021-01-05 | 浙江大学宁波理工学院 | Stepping rolling forming method and device for thin-walled tube with ultra-large deformation |
| CN109909342B (en) * | 2019-01-28 | 2021-01-05 | 浙江大学宁波理工学院 | Roll forming method and device for low-plasticity alloy thin-walled tube with ultra-large deformation |
| CN109909344B (en) * | 2019-01-28 | 2021-01-05 | 浙江大学宁波理工学院 | Ultra-thin wall tube rolling forming method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE387922B (en) * | 1971-07-02 | 1976-09-20 | G Gattrugeri | EXAPADERBAR HALLARE |
| CN1052620A (en) * | 1990-10-30 | 1991-07-03 | 重庆特殊钢厂 | Squeezing cold-rolled steel strip straight peen decoiler |
| CN201389581Y (en) * | 2008-12-12 | 2010-01-27 | 沈阳汇博热能设备有限公司 | Major-diameter flanging corrugated pipe sealing surface leveling device |
| CN101961738B (en) * | 2010-11-16 | 2012-07-04 | 中冶赛迪工程技术股份有限公司 | Automatic expanding and shrinking waste edge coiling machine drum |
| CN102581151A (en) * | 2012-02-24 | 2012-07-18 | 佛山市澜石宇航星不锈钢有限公司 | Pipe expanding machine of titanium alloy thin-wall welded pipe |
| CN103862077A (en) * | 2014-03-10 | 2014-06-18 | 苏州捷德瑞精密机械有限公司 | Expansion mandrel |
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Effective date of registration: 20220106 Address after: 301800 No. 13, Baofu Road, energy conservation and environmental protection industrial zone, Baodi District, Tianjin Patentee after: Tianjin zoyuan New Material Technology Co.,Ltd. Address before: 301800 No. 13, Baofu Road, Tianbao Economic Development Zone, Baodi District, Tianjin Patentee before: TIANJIN BAIENWEI NEW MATERIAL TECHNOLOGY Co.,Ltd. |