CN106975682B - A kind of bending machine and the technique using bend pipe machining multilayer bend pipe - Google Patents
A kind of bending machine and the technique using bend pipe machining multilayer bend pipe Download PDFInfo
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- CN106975682B CN106975682B CN201710327727.4A CN201710327727A CN106975682B CN 106975682 B CN106975682 B CN 106975682B CN 201710327727 A CN201710327727 A CN 201710327727A CN 106975682 B CN106975682 B CN 106975682B
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- locating part
- wrapping formed
- round tube
- bend pipe
- formed device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Unwinding Of Filamentary Materials (AREA)
Abstract
The present invention provides a kind of bending machine and the technique using bend pipe machining multilayer bend pipe comprising rack, the workbench for being set to upper rack, be installed on workbench and can around own axis the first locating part, be installed on workbench and can around own axis Wrapping formed device, be installed on Wrapping formed device pedestal the second locating part, be set to the motor and retarder of machine frame inside；The output shaft end of motor is connected by the input shaft end of belt and retarder, and the output shaft end of retarder is connect by belt with the input shaft end of Wrapping formed device.
Description
Technical field
The present invention relates to a kind of bending machines.
Background technique
Traditional bending machine can only carry out simple bending machining to pipe fitting in the same plane, process device structure used
It is complicated, volume is more larger, maintenance higher cost, for more complex pipe fitting bending machining frequently with artificial, increased work
The labor intensity of people, production efficiency are low.
Summary of the invention
To overcome the above disadvantages, the present invention provides a kind of high degree of automation for complex pipes bending machining, makes
With the bending machine laborsaving, work efficiency is high.
The present invention uses following technical scheme.
Bending machine includes rack, the workbench for being set to upper rack, is installed on workbench and can turn around own axes
Dynamic the first locating part, be installed on workbench and can around own axis Wrapping formed device, be set to machine frame inside
Motor and retarder；The output shaft end of motor is connected by the input shaft end of belt and retarder, the output of retarder
Shaft end is connect by belt with the input shaft end of Wrapping formed device；The second locating part being installed on Wrapping formed device pedestal
A through slot passed through for round tube is formed between Wrapping formed device, the first locating part is arranged along round tube axial direction in work
Make on platform, it is ipsilateral that the first locating part and the second locating part are located at round tube.
As a further improvement of the present invention.
First locating part is movably installed on workbench by the sliding rail being set on workbench, and the second locating part is by setting
The sliding rail being placed on Wrapping formed device pedestal is movably installed on the pedestal of Wrapping formed device, by adjusting the first locating part
With the position of the second locating part, it can be achieved that the different pipe fitting of processing thickness.
As a further improvement of the present invention.
Round tube is not horizontal with the pedestal of Wrapping formed device in the initial state, but has a certain degree with it, this
Angle is realized by the second locating part；Second locating part bottom surface is inclined-plane, and round tube is matched with its bottom surface thus with Wrapping formed
The pedestal shape of device has a certain degree, this angle functions as helix angle, and round tube can be made with Wrapping formed device
Rotational automatic wound upwards along its axial direction to completing bend pipe.
As a further improvement of the present invention.
The different sleeve of external surface shape can be installed additional on Wrapping formed device in order to meet the processing of different shape bend pipe,
Its middle sleeve and Wrapping formed device coaxial cooperation, the second pin hole on the first pin hole and sleeve on Wrapping formed device
Cooperated by bolt and is assembled.
Using the technique of above-mentioned bend pipe machining multilayer bend pipe, step includes:
S1: under original state, one end of round tube is passed through into the second locating part and Wrapping formed device is formed by through slot, separately
One end starts motor, round tube constrains between the first locating part and the second locating part and itself tube wall by manually holding
It is automatically Wrapping formed upwardly around the appearance of Wrapping formed device along Wrapping formed device axial direction under the action of power, when
When being wound into specified altitude assignment, formed first layer bend pipe, close motor, the circular tube external wall being wound by welding
Several angle bar highly identical with winding are installed;
The undressed part of round tube: manually being pulled the other side for folding to the first locating part by s2 and is wound in undressed round tube edge
Type device axial direction, which is pulled downwards, rolls over certain angle, inverts motor, under the action of the first locating part restraining force, due to
There is an initial angle plus the restraint stress between tube wall, round tube can be downward along Wrapping formed device axial direction
Automatic winding reaches Wrapping formed in the outside of several angle bar, forms second layer bend pipe；
S3: when being wound into close to Wrapping formed device pedestal, closing motor, the socket one in the outside of wind round tube
Sleeve, sleeve wall lower part are provided with the notch that can cooperate with round tube, and the purpose of the notch is the undressed circle in order to which sleeve is in socket
Pipe may pass through notch, and sleeve and the pedestal of Wrapping formed device are fitted closely, the second pin hole is provided with above sleeve,
It is coupled by bolt and the first pin hole on Wrapping formed device；
s4；Undressed round tube is manually pulled to the other side for folding to the first locating part at this time and is wound in undressed round tube edge
Type device axial direction is pulled upwards rolls over certain angle, and motor rotates forward, under the action of the first locating part restraining force, due to having
For one initial angle plus the restraint stress between tube wall, round tube can be upward certainly along Wrapping formed device axial direction
The dynamic outside for being wrapped in sleeve, reaches specified altitude assignment, Wrapping formed, forms third layer bend pipe；Undressed round tube and the first limit
The principle of part relative position is: the first locating part contacts the restraining force direction of undressed round tube with Wrapping formed device and round tube
Straight line where the tangential direction of point is perpendicular.
Using the technique of above-mentioned bend pipe machining multilayer bend pipe, step includes:
S1: under original state, one end of round tube is passed through into the second locating part and Wrapping formed device is formed by through slot, separately
One end starts motor, round tube constrains between the first locating part and the second locating part and itself tube wall by manually holding
Under the action of power, automatically along Wrapping formed device axial direction around the appearance of Wrapping formed device Wrapping formed upwardly, shape
At first layer bend pipe, when being wound into specified altitude assignment, close motor, the circular tube external wall being wound by welding
Several angle bar highly identical with winding are installed；
S2: manually pulling downwards along Wrapping formed device axial direction by the undressed part of round tube and roll over certain angle, starting
Generator, under the action of the first locating part restraining force, due to there is an initial angle plus the constraint between tube wall
Stress, round tube can reach Wrapping formed along the Wrapping formed downward automatic winding of device axial direction in the outside of several angle bar,
Form second layer bend pipe；
S3: when being wound into close to Wrapping formed device pedestal, closing motor, the socket one in the outside of wind round tube
Sleeve, sleeve wall lower part are provided with the notch that can cooperate with round tube, and the purpose of the notch is the undressed circle in order to which sleeve is in socket
Pipe may pass through notch, and sleeve and the pedestal of Wrapping formed device are fitted closely, the second pin hole is provided with above sleeve,
It is coupled by bolt and the first pin hole on Wrapping formed device；
S4: manually pulling upwards along Wrapping formed device axial direction by undressed round tube roll over certain angle at this time, starting
Motor, under the action of the first locating part restraining force, due to there is an initial angle plus the constraint between tube wall
Stress, round tube can reach specified altitude assignment along the Wrapping formed upward automatic winding of device axial direction in the outside of sleeve, winding
Molding forms third layer bend pipe, and motor steering remains unchanged in above-mentioned process.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the bend pipe original state figure of the embodiment of the present invention.
Fig. 3 be bend pipe of the embodiment of the present invention original state when and bending machine cooperation schematic diagram.
When Fig. 4 is bend pipe of embodiment of the present invention original state with the cooperation schematic diagram of the first locating part.
Fig. 5,6 are other embodiments of the invention schematic diagram.
Fig. 7 is a kind of multilayer bend pipe of processing of the embodiment of the present invention.
10, rack is denoted as in figure；11, workbench；12, the first locating part；13, the second locating part；20, retarder；
21a, third layer bend pipe；21b, second layer bend pipe；22c, first layer bend pipe；30, motor；40, round tube；50, Wrapping formed dress
It sets；51, the first pin hole；60, sleeve；61, the second pin hole；62, bolt 25, angle bar.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art without making creative work, every other reality obtained
Example is applied, the scope of the present invention is belonged to.
Referring to attached drawing 1, bending machine includes rack 10, the workbench 11 for being set to upper rack, is installed on workbench simultaneously
Can around own axis the first locating part 12, be installed on workbench and can be around the Wrapping formed device of own axis
50, the motor 30 and retarder 20 of machine frame inside are set to；The output shaft end of motor 30 passes through belt and retarder 20
The output shaft end of input shaft end connection, retarder 20 is connect by belt with the input shaft end of Wrapping formed device 50.
Referring to attached drawing 2, it is that 40 original state of round tube of the embodiment of the present invention and bending machine cooperate schematic diagram, is installed on winding
The second locating part 13 on 50 pedestal of molding machine and formed between Wrapping formed device 50 one passed through for round tube 40 it is logical
Slot, the first locating part 12 are arranged on workbench 11 along 40 axial direction of round tube, the first locating part 12 and the second locating part 13
It is ipsilateral in round tube 40, the wherein plane tangent of 40 feedstock direction of round tube and Wrapping formed 50 contact position of device.
Referring to attached drawing 3, round tube 40 is not horizontal with the pedestal of Wrapping formed device 50 in the initial state, but with its at
Certain angle, this angle are realized by the second locating part 13.
Referring to attached drawing 4,13 bottom surface of the second locating part is inclined-plane, and round tube 40 is matched with its bottom surface thus with Wrapping formed dress
It sets 50 pedestal shape to have a certain degree, the restraining force for functioning as helix angle, cooperating between tube wall of this angle can make
Round tube 40 winds to complete bend pipe along its axial direction upwards with the rotational automatic of Wrapping formed device 50.
In actual work, before bending machine not running, round tube 40 to be processed is manually placed on bending machine, opens bend pipe
Machine, the second locating part 13 for possessing ramped bottom surface and can under the collective effect of the first locating part 12 of own axis,
Round tube can voluntarily be wound along the axial direction of Wrapping formed device upwards, complete bend pipe.
Referring to attached drawing 5, sleeve 60 can be installed additional on Wrapping formed device 50, to realize the bend pipe of processing different inner diameters,
Middle sleeve 60 and Wrapping formed 50 coaxial cooperation of device, the first pin hole 51 on Wrapping formed device and second on sleeve 60
Pin hole 61 passes through the cooperation assembly of bolt 62.
Referring to attached drawing 6, the irregular external member of external surface shape can be installed additional on Wrapping formed device 50, to realize not similar shape
The bend pipe of shape, loading pattern are similar to above.
More specifically, the first locating part 12 is movably installed on workbench 11 by the sliding rail being set on workbench,
Second locating part 13 is movably installed in the bottom of Wrapping formed device 50 by the sliding rail being set on Wrapping formed 50 pedestal of device
On seat, by adjusting the position of the first locating part 12 and the second locating part 13, it can be achieved that processing the different pipe fitting of thickness.
Referring to attached drawing 1,2,7, using the technique of above-mentioned bend pipe machining multilayer bend pipe, step includes:
S1: under original state, one end of round tube 40 is spaced across the second locating part 13 and Wrapping formed device 50
It is formed by through slot, the other end starts motor 30, round tube is in the first locating part 12 and the second locating part 13 by manually holding
And between itself tube wall under the action of restraining force, automatically along Wrapping formed 50 axial direction of device around Wrapping formed device 50
Appearance it is Wrapping formed upwardly, formed first layer bend pipe 21c, when being wound into specified altitude assignment, close motor 30, winding
40 outer wall of round tube of formation installs several angle bar 25 highly identical with first layer bend pipe 21c winding by welding；
S2: the undressed part of round tube 40 is manually pulled to the other side for folding to the first locating part 12 and by undressed 40 edge of round tube
Wrapping formed 50 axial direction of device, which is pulled downwards, rolls over certain angle, inverts motor 30, in the first locating part restraining force
Under effect, due to there is an initial angle plus the restraint stress between 40 tube wall of round tube, round tube 40 can be along Wrapping formed
The downward automatic winding of 50 axial direction of device reaches Wrapping formed in the outside of several angle bar, forms second layer bend pipe 21b；
S3: when being wound into close to Wrapping formed 50 pedestal of device, motor is closed, in the outer sheath of wound round tube 40
Connect a sleeve 60, sleeve wall lower part is provided with the notch that can cooperate with round tube, the purpose of the notch be in order to which sleeve 60 is in socket,
Undressed round tube 40 may pass through notch, sleeve 60 and the pedestal of Wrapping formed device 50 be fitted closely, the top of sleeve
It is provided with the second pin hole 61, is coupled by bolt 62 and the first pin hole 51 on Wrapping formed device 50；
S4: undressed round tube is manually pulled to the other side for folding to the first locating part 12 at this time and by undressed round tube 40 along twining
It is pulled upwards around 50 axial direction of molding machine and rolls over certain angle, motor 30 rotates forward, in the effect of the first locating part restraining force
Under, due to there is an initial angle plus the restraint stress between 40 tube wall of round tube, round tube 40 can be along Wrapping formed device
The upward automatic winding of 50 axial directions reaches specified altitude assignment in the outside of sleeve 60, winding, forms third layer bend pipe 21a；
In above-mentioned steps S1, S2, S4, undressed round tube 40 and the principle of 12 relative position of the first locating part are: first
Locating part 12 is to the restraining force direction of undressed round tube 40 and the tangential direction institute of 40 contact point of Wrapping formed device 50 and round tube
It is perpendicular in straight line；
Referring to attached drawing 1,2,7, using the technique of above-mentioned bend pipe machining multilayer bend pipe, step includes:
S1: under original state, one end of round tube 40 is spaced across the second locating part 13 and Wrapping formed device 50
It is formed by through slot, the other end starts motor 30, round tube is in the first locating part 12 and the second locating part 13 by manually holding
And between itself tube wall under the action of restraining force, automatically along Wrapping formed 50 axial direction of device around Wrapping formed device 50
Appearance it is Wrapping formed upwardly, when being wound into specified altitude assignment, formed first layer bend pipe 21c, close motor 30, winding
40 outer wall of round tube of formation installs several angle bar 25 highly identical with winding by welding；
S2: manually pulling downwards along Wrapping formed 50 axial direction of device by the undressed part of round tube 40 and roll over certain angle,
Start generator, under the action of the first locating part restraining force, due to there is an initial angle plus between 40 tube wall of round tube
Restraint stress, round tube 40 can reach along the downward automatic winding of Wrapping formed 50 axial direction of device in the outside of several angle bar
To Wrapping formed, formation second layer bend pipe 21b；
S3: when being wound into close to Wrapping formed 50 pedestal of device, motor is closed, in the outer sheath of wound round tube 40
Connect a sleeve 60, sleeve wall lower part is provided with the notch that can cooperate with round tube, the purpose of the notch be in order to which sleeve 60 is in socket,
Undressed round tube 40 may pass through notch, sleeve 60 and the pedestal of Wrapping formed device 50 be fitted closely, the top of sleeve
It is provided with the second pin hole 61, is coupled by bolt 62 and the first pin hole 51 on Wrapping formed device 50；
S4: manually pulling upwards along Wrapping formed 50 axial direction of device by undressed round tube 40 roll over certain angle at this time,
Start motor, under the action of the first locating part restraining force, due to there is an initial angle plus between 40 tube wall of round tube
Restraint stress, round tube 40 can reach along the upward automatic winding of Wrapping formed 50 axial direction of device in the outside of sleeve 60
Specified altitude assignment, it is Wrapping formed, form third layer bend pipe 21a；
In above-mentioned steps S1, S2, S4, the rotation direction of motor is identical.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention；
Various modifications to these embodiments will be readily apparent to those skilled in the art, defined in the present invention
General Principle can be realized in other embodiments in the case where not departing from spirit or scope of the invention.Therefore, originally
Invention will not be defined to the embodiments shown herein, and be to fit to and the principles and novel features disclosed herein
Consistent widest scope.
Claims (5)
1. a kind of bending machine comprising rack, the workbench for being set to upper rack, the motor for being set to machine frame inside and subtract
Fast device；The output shaft end of motor is connected by the input shaft end of belt and retarder, and the output shaft end of retarder passes through belt
Connect with the input shaft end of Wrapping formed device, which is characterized in that the bending machine further include be installed on workbench and can around from
Body axis rotation the first locating part, be installed on workbench and can around own axis Wrapping formed device, be installed on
The second locating part on Wrapping formed device pedestal forms one between the second locating part and Wrapping formed device and wears for round tube
The through slot crossed；
S1: under original state, one end of round tube is passed through into the second locating part and Wrapping formed device is formed by through slot, the other end
It is fixed, start motor, round tube is between the first locating part and the second locating part and itself tube wall under the action of restraining force, edge
Wrapping formed device axial direction is Wrapping formed upwardly around the appearance of Wrapping formed device, is wound into specified altitude assignment, is formed
First layer bend pipe closes motor;
S2: the undressed part of round tube is pulled and folds to the other side of the first locating part and by undressed round tube along Wrapping formed assembly axis
It is pulled downwards to direction and rolls over certain angle, invert motor, under the action of the first locating part restraining force, as at the beginning of having one
For the angle of beginning plus the restraint stress between tube wall, round tube can be wrapped in downwards the along Wrapping formed device axial direction
On the outside of one layer of bend pipe, reach Wrapping formed, forms second layer bend pipe；
S3: when being wound into close to Wrapping formed device pedestal, closing motor, is socketed in the outside of wind round tube a set of
Cylinder, sleeve wall lower part are provided with the notch that can cooperate with round tube, are provided with the second pin hole above sleeve, by bolt be wound in
The first pin hole on type device is coupled；
S4: undressed round tube is pulled fold to the other side of the first locating part and by undressed round tube along Wrapping formed assembly axis at this time
Pulled upwards to direction and roll over certain angle, motor rotates forward, under the action of the first locating part restraining force, due to have one it is initial
Angle plus the restraint stress between tube wall, round tube can be wrapped in upwards sleeve along Wrapping formed device axial direction
Outside, reach specified altitude assignment, it is Wrapping formed, formed third layer bend pipe；Undressed round tube and the first locating part relative position
Principle is: the first locating part is to the restraining force direction of undressed round tube and the tangential direction of Wrapping formed device and round tube contact point
Place straight line is perpendicular.
2. bending machine according to claim 1, which is characterized in that under original state, the first locating part and the second locating part
It is ipsilateral positioned at round tube.
3. bending machine according to claim 1 or 2, which is characterized in that the second locating part bottom surface is inclined-plane.
4. bending machine according to claim 1, which is characterized in that can coaxially be socketed outer surface outside Wrapping formed device is
The sleeve of any shape.
5. bending machine according to claim 1 or 2, which is characterized in that the second locating part is movably installed in Wrapping formed dress
On the pedestal set, the first locating part is movably installed on work top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710327727.4A CN106975682B (en) | 2017-05-11 | 2017-05-11 | A kind of bending machine and the technique using bend pipe machining multilayer bend pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710327727.4A CN106975682B (en) | 2017-05-11 | 2017-05-11 | A kind of bending machine and the technique using bend pipe machining multilayer bend pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106975682A CN106975682A (en) | 2017-07-25 |
| CN106975682B true CN106975682B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710327727.4A Active CN106975682B (en) | 2017-05-11 | 2017-05-11 | A kind of bending machine and the technique using bend pipe machining multilayer bend pipe |
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| CN (1) | CN106975682B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238169A (en) * | 2020-09-14 | 2021-01-19 | 衡阳市大成锅炉有限公司 | Adjustable low-cost simple coiler |
| CN113894190B (en) * | 2021-10-11 | 2024-04-30 | 马鞍山市润通重工科技有限公司 | Large-sleeve pipe bending equipment and implementation method thereof |
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| CN201042727Y (en) * | 2007-03-20 | 2008-04-02 | 成都安特力边坡防护有限公司 | Manufacture equipment for concentric steel tendon |
| CN203955967U (en) * | 2014-07-15 | 2014-11-26 | 翟煜尧 | A kind of spiral bar producing device |
| EP2893988A1 (en) * | 2014-01-09 | 2015-07-15 | A-Steel S.R.L. | Device to hold at least one pipe loaded onto a forming line during its machining |
| CN205165559U (en) * | 2015-11-05 | 2016-04-20 | 重庆气体压缩机厂有限责任公司 | Heat exchange tube is around plumber's dress |
| CN106623547A (en) * | 2016-12-06 | 2017-05-10 | 中国化学工程第三建设有限公司 | Automatic winding system for spiral half-tube |
| CN206951873U (en) * | 2017-05-11 | 2018-02-02 | 叶集试验区红太阳动力机械有限公司 | A kind of bending machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201042727Y (en) * | 2007-03-20 | 2008-04-02 | 成都安特力边坡防护有限公司 | Manufacture equipment for concentric steel tendon |
| EP2893988A1 (en) * | 2014-01-09 | 2015-07-15 | A-Steel S.R.L. | Device to hold at least one pipe loaded onto a forming line during its machining |
| CN203955967U (en) * | 2014-07-15 | 2014-11-26 | 翟煜尧 | A kind of spiral bar producing device |
| CN205165559U (en) * | 2015-11-05 | 2016-04-20 | 重庆气体压缩机厂有限责任公司 | Heat exchange tube is around plumber's dress |
| CN106623547A (en) * | 2016-12-06 | 2017-05-10 | 中国化学工程第三建设有限公司 | Automatic winding system for spiral half-tube |
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| CN106975682A (en) | 2017-07-25 |
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Address after: 237431 Xingye Avenue, Yeji District, Luan City, Anhui Province Applicant after: Luan Yeji Red Sun Power Machinery Co., Ltd. Address before: 237431 Gangnan Road, Yeji Experimental Area, Luan City, Anhui Province Applicant before: Wuhan Huada Jene Technology Co., Ltd. |
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