CN108381901B - Flaring die for producing plastic pipe with sealing groove for quick connection - Google Patents
Flaring die for producing plastic pipe with sealing groove for quick connection Download PDFInfo
- Publication number
- CN108381901B CN108381901B CN201810320540.6A CN201810320540A CN108381901B CN 108381901 B CN108381901 B CN 108381901B CN 201810320540 A CN201810320540 A CN 201810320540A CN 108381901 B CN108381901 B CN 108381901B
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- flaring
- cavity
- die
- core
- wall
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- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 230000007704 transition Effects 0.000 claims description 11
- 238000007790 scraping Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention provides a flaring die for producing a plastic pipe with a sealing groove for quick connection, and belongs to the technical field of plastic pipe processing. The flaring die comprises a cavity die and a core die, wherein the core die comprises a flaring die core capable of being inserted into the cavity die and a positioning die core connected with the flaring die core, a first compressed air flow passage parallel to the axis of the flaring die core is arranged in the flaring die core, an annular flaring groove recessed towards the inside of the flaring die core is formed in the outer wall of the flaring die core, and a plurality of air outlets are formed in the annular flaring groove and are communicated with the first compressed air flow passage. The invention can realize the arrangement of the flaring and the sealing groove in one step and has high production efficiency.
Description
Technical Field
The invention belongs to the technical field of plastic pipe processing, and relates to a flaring die for producing a plastic pipe with a sealing groove for quick connection.
Background
When plastic pipes are connected, the plastic pipes are usually butted by adopting flared pipes. In the prior art, a flaring machine is generally used to manufacture a flaring pipe. The flared tube and the common plastic tube are required to be sealed after being connected, and are usually sealed by sealant, namely, sealant is respectively smeared on the inner wall of the flared tube and the outer wall of the plastic tube to be connected and then are connected with each other, the gluing and connecting process is relatively long in time, and in addition, the sealant is easy to be corroded by fluid in the plastic tube to lose sealing effect.
It is considered to seal the junction between the flared tube and the plastic tube with a corrosion resistant seal ring, but this requires the provision of a seal groove for the flared tube for the placement of the seal ring. The sealing groove is arranged in the flaring pipe, and a procedure is needed, so that the manufacturing process is complicated.
Disclosure of Invention
The invention aims to solve the problems and provide a flaring die for producing plastic pipes with a sealing groove for quick connection.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a plastic pipe flaring die for producing a sealing groove for quick connection comprises a cavity die and a mandrel die, wherein the mandrel die comprises a flaring mandrel capable of being inserted into the cavity die and a positioning mandrel connected with the flaring mandrel, a first compressed air flow channel parallel to the axis of the flaring mandrel is arranged in the flaring mandrel, an annular flaring groove recessed towards the inside of the flaring mandrel is formed in the outer wall of the flaring mandrel, and a plurality of air outlets are formed in the annular flaring groove and are communicated with the first compressed air flow channel.
In the flaring die for producing the plastic pipe with the sealing groove for quick connection, a gap is reserved between the outer wall of the flaring core and the inner wall of the cavity die, the outer wall of the positioning core is tightly matched with the inner wall of the cavity die, the cavity die comprises two opposite cavity half dies with the same shape and size, and the two cavity half dies are mutually attached under the action of external force to form the cavity die.
In the flaring die for producing the plastic pipe with the sealing groove for quick connection, each cavity half die is connected with a half die driver with an output shaft capable of reciprocating along a straight line, and the half die drivers on the two cavity half dies are coaxially arranged.
In the plastic pipe flaring die for producing the sealing groove for quick connection, the driver mounting plate is detachably connected to the cavity half die, and the half die driver is detachably connected with the driver mounting plate.
In the plastic pipe flaring die for producing the sealing groove for quick connection, the second compressed air flow passage is arranged in the positioning die core, the second compressed air flow passage and the first compressed air flow passage are coaxially arranged and are mutually communicated, the positioning die core is externally screwed with the positioning flange, the flaring die core is inserted into the positioning flange and is screwed with the positioning flange, and when the positioning flange is inserted into the cavity die, the outer wall of the positioning flange is tightly matched with the inner wall of the cavity die.
In the plastic pipe flaring die for producing the sealing groove for quick connection, the flaring mandrel is provided with the sealing ring in sealing fit with the positioning flange, the end part of the positioning flange extends to the edge part close to the annular flaring groove, and one end of the positioning flange close to the annular flaring groove is provided with the cylindrical overflow channel.
In the plastic pipe flaring die for producing the sealing groove for quick connection, the inner wall of the die cavity half die is provided with the feeding cavity, the transition cavity, the flaring cavity and the sealing groove forming cavity which are connected with each other, the aperture of the flaring cavity is larger than that of the feeding cavity, the aperture of the transition cavity is gradually enlarged from the feeding cavity to the flaring cavity, the aperture of the sealing groove forming cavity is larger than that of the flaring cavity, when the die core die is inserted into the die cavity die, the annular flaring groove on the flaring die core is positioned in the sealing groove forming cavity, and the parts on the flaring die core and in front of the annular flaring groove are respectively matched with the feeding cavity, the transition cavity and the flaring cavity.
In the plastic pipe flaring die for producing the sealing groove for quick connection, one end of the flaring die core, which is far away from the positioning die core, is detachably connected with a guiding positioning head, and a gap is formed between the guiding positioning head and the inner wall of the feeding cavity.
In the plastic pipe flaring die for producing the sealing groove for quick connection, the guide positioning head is sleeved on the flaring mandrel and is in sealing connection with the flaring mandrel, the bottom of the guide positioning head protrudes outwards to form a wall scraping ring with a triangular section, the bottom of the wall scraping ring is provided with an air flow buffer groove, and the air flow buffer groove extends out of the outer wall of the end part of the flaring mandrel.
In the plastic pipe flaring die for producing the sealing groove for quick connection, a plurality of air outlet holes are uniformly arranged at intervals along the circumferential direction of the annular flaring groove.
Compared with the prior art, the invention has the advantages that:
1. the flaring and the sealing groove can be arranged in one step, and the production efficiency is high.
2. In the process of flaring the plastic pipe, the softened plastic pipe is expanded by adopting air pressure by utilizing the acting force of compressed air, and a sealing groove is formed in the plastic pipe; and the annular flaring groove is arranged to obtain the expansion pressure, and after acting on the pipe, the sealing groove with uniform size is obtained.
3. By adjusting the pressure of the compressed air, plastic pipes with different sealing groove positions can be obtained.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the structure provided by the present invention;
fig. 2 is a schematic diagram of the operation of the present invention.
In the figure, a cavity die 1, a core die 2, a flaring core 3, a positioning core 4, a first compressed air runner 5, an annular flaring groove 6, an air outlet 7, a cavity half die 8, a half die driver 9, a driver mounting plate 10, a second compressed air runner 11, a compressed air joint 11a, a positioning flange 12, a sealing ring 13, an overflow channel 14, a feeding cavity 15, a transition cavity 16, a flaring cavity 17, a sealing groove forming cavity 18, a guiding positioning head 19, a wall scraping ring 20, an airflow buffer groove 21, a plastic pipe 100 and a sealing groove 101.
Detailed Description
As shown in fig. 1, a plastic pipe flaring die for producing a sealing groove for quick connection comprises a cavity die 1 and a mandrel die 2, wherein the mandrel die 2 comprises a flaring mandrel 3 which can be inserted into the cavity die 1, the end part of the flaring mandrel 3 is preferably provided with a conical shape, when the flaring mandrel is inserted into the cavity die 1, a flaring can be formed, and a positioning mandrel 4 connected with the flaring mandrel 3, a first compressed air flow passage 5 parallel to the axis of the flaring mandrel 3 is arranged in the flaring mandrel 3, preferably, the axis of the first compressed air flow passage 5 coincides with the axis of the flaring mandrel 3, an annular flaring groove 6 which is sunken towards the inside of the flaring mandrel 3 is arranged on the outer wall of the flaring mandrel 3, a plurality of air outlets 7 are arranged on the annular flaring groove 6 and are communicated with the first compressed air flow passage 5, the air outlets 7 are uniformly arranged along the circumferential spacing of the annular flaring groove 6, and the compressed air is discharged from the air outlets 7 after being introduced into the first compressed air flow passage 5.
When the plastic pipe 100 is used, as shown in the figure 2, the plastic pipe 100 is heated and softened and is inserted into the cavity die 1, the core die 2 is inserted into the cavity die 1 and is pushed to a set position, compressed air enters the first compressed air runner 5, the pressure of the compressed air is kept at 0.8MPa, and the plastic pipe 100 at the corresponding position of the annular flaring slot 6 is outwards expanded under the action of the compressed air to form a sealing groove 101 for placing a sealing ring after expansion.
Since the annular flaring groove 6 is annular, the pressure of compressed air in the annular flaring groove is uniform, the force acting on the plastic pipe is also uniform, and the sealing groove 101 with uniform shape can be obtained.
The outer wall of the flaring core 3 and the inner wall of the cavity die 1 are provided with gaps, the specific size of the gaps corresponds to plastic pipes needing flaring, the outer wall of the positioning core 4 is tightly matched with the inner wall of the cavity die 1, the cavity die 1 comprises two opposite cavity half dies 8 with the same shape and size, and the two cavity half dies 8 are mutually attached under the action of external force to form the cavity die 1. The external force refers to the clamping force, that is, the clamping of the two cavity half-molds 8 into the cavity mold 1, and the clamping can be performed by a hydraulic system or other mechanical force.
In this embodiment, each cavity half 8 is connected to a half driver 9 having an output shaft that reciprocates along a straight line, and the half drivers 9 on the two cavity half 8 are coaxially arranged. In this embodiment, the mold half driver 9 may be a cylinder or an oil cylinder, preferably an oil cylinder, and this arrangement can achieve rapid mold closing and opening, and the production efficiency can be significantly improved.
The die half 8 is detachably connected with a driver mounting plate 10 by bolts, and the die half driver 9 is detachably connected with the driver mounting plate 10.
The positioning core 4 is internally provided with a second compressed air runner 11, the end part of the positioning core 4 is provided with a compressed air joint 11a, the compressed air joint 11a is communicated with the second compressed air runner 11, the second compressed air runner 11 and the first compressed air runner 5 are coaxially arranged and are mutually communicated, the positioning core 4 is externally screwed with a positioning flange 12, the flaring core 3 is inserted into the positioning flange 12 and is screwed with the positioning flange 12, when the positioning flange 12 is inserted into the cavity die 1, the outer wall of the positioning flange 12 is tightly matched with the inner wall of the cavity die 1, and the tight matching part can prevent the plastic pipe 100.
The flaring core 3 is provided with a sealing ring 13 in sealing fit with the positioning flange 12, the sealing ring 13 is used for preventing air leakage, the end part of the positioning flange 12 extends to the edge close to the annular flaring slot 6, and one end of the positioning flange 12 close to the annular flaring slot 6 is provided with a cylindrical overflow channel 14.
The applicant has surprisingly found that the provision of the sealing ring 13 in combination with the close fit of the outer wall of the positioning flange 12 to the inner wall of the cavity die 1 creates a relatively closed area between the outer wall of the flaring core 3 and the inner wall of the positioning flange 12, whereby when the compressed air in the annular flaring channel 6 is pressurized, the plastic tubing 100 deforms and ends into the overflow channel 14, thereby compressing the area between the outer wall of the flaring core 3 and the inner wall of the positioning flange 12, which area is pressurized, and when the pressure is pressurized to a level substantially equal to the pressure of the compressed air, the ends of the plastic tubing 100 no longer extend, and that the applicant can control the degree of extension of the ends of the plastic tubing 100 by controlling the pressure of the compressed air, as the pressure is directly related to the volume change of the gas, which is very convenient.
The inner wall of the cavity half die 8 is provided with a feeding cavity 15, a transition cavity 16, a flaring cavity 17 and a sealing groove forming cavity 18 which are connected with each other, the aperture of the flaring cavity 17 is larger than that of the feeding cavity 15, the aperture of the transition cavity 16 is gradually enlarged from the feeding cavity 15 to the flaring cavity 17, the aperture of the sealing groove forming cavity 18 is larger than that of the flaring cavity 17, when the core die 2 is inserted into the cavity die 1, the annular flaring groove 6 on the flaring core 3 is positioned in the sealing groove forming cavity 18, and the parts on the flaring core 3 and in front of the annular flaring groove 6 are respectively matched with the feeding cavity 15, the transition cavity 16 and the flaring cavity 17.
The end of the flaring core 3 remote from the positioning core 4 is detachably connected with a guiding positioning head 19, and a gap is formed between the guiding positioning head 19 and the inner wall of the feeding cavity 15, and the gap can be specifically set according to the plastic pipe, and is generally a wall thickness of the plastic pipe.
The guide positioning head 19 is sleeved on the flaring core 3 and is in sealing connection with the flaring core, the fixing is realized by adopting a bolt and the flaring core 3, two ends of the first compressed air flow channel 5 in the flaring core 3 are open, the processing is convenient, one end of the first compressed air flow channel is sealed with the guide positioning head 19, the bottom of the guide positioning head 19 protrudes outwards to form a wall scraping ring 20 with a triangular section, an air flow buffer groove 21 is formed in the bottom of the wall scraping ring 20, and the air flow buffer groove 21 extends out of the outer wall of the end part of the flaring core 3.
The wall scraping ring 20 is attached to the inner wall of the plastic pipe in the process that the core mold 2 is inserted into the cavity mold, so that the inner wall of the plastic pipe is kept smooth, and the air flow buffer groove 21 is arranged, so that the flaring core 3 is prevented from being normally inserted due to the fact that vacuum is generated when the flaring core 3 is tightly contacted with the inner wall of the plastic pipe.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the cavity mold 1, the core mold 2, the flaring core 3, the positioning core 4, the first compressed air runner 5, the annular flaring groove 6, the air outlet 7, the cavity half 8, the half driver 9, the driver mounting plate 10, the second compressed air runner 11, the compressed air joint 11a, the positioning flange 12, the seal ring 13, the overflow channel 14, the feed cavity 15, the transition cavity 16, the flaring cavity 17, the seal groove forming cavity 18, the guide positioning head 19, the wall scraping ring 20, the air flow buffer groove 21, the plastic pipe 100, the seal groove 101, etc. are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the invention and should be construed in a manner consistent with their spirit and scope.
Claims (8)
1. A plastic pipe flaring die for producing a sealing groove for quick connection comprises a cavity die (1) and a mandrel die (2), and is characterized in that the mandrel die (2) comprises a flaring mandrel (3) capable of being inserted into the cavity die (1) and a positioning mandrel (4) connected with the flaring mandrel (3), a first compressed air flow passage (5) parallel to the axis of the flaring mandrel (3) is arranged in the flaring mandrel (3), an annular flaring groove (6) recessed towards the inside of the flaring mandrel (3) is arranged on the outer wall of the flaring mandrel (3), a plurality of air outlets (7) are arranged on the annular flaring groove (6) and are communicated with the first compressed air flow passage (5),
the outer wall of the flaring core (3) is in clearance with the inner wall of the cavity mold (1), the outer wall of the positioning core (4) is tightly matched with the inner wall of the cavity mold (1), the cavity mold (1) comprises two opposite cavity mold halves (8) with the same shape and size, the two cavity mold halves (8) are mutually attached under the action of external force to form the cavity mold (1),
the air outlet holes (7) are uniformly arranged along the circumferential direction of the annular flaring groove (6) at intervals.
2. Flaring die for producing plastic pipes with sealing grooves for quick connection according to claim 1, characterized in that each cavity half (8) is connected with a half-die driver (9) with an output shaft capable of reciprocating along a straight line, the half-die drivers (9) on the two cavity half-dies (8) being coaxially arranged.
3. The flaring die for producing plastic pipes with sealing grooves for quick connection according to claim 2, characterized in that the die cavity half die (8) is detachably connected with a driver mounting plate (10), and the half die driver (9) is detachably connected with the driver mounting plate (10).
4. The flaring die for producing plastic pipes with sealing grooves for quick connection according to claim 1, wherein a second compressed air runner (11) is arranged in the positioning core (4), the second compressed air runner (11) and the first compressed air runner (5) are coaxially arranged and are mutually communicated, the positioning core (4) is externally screwed with a positioning flange (12), the flaring core (3) is inserted into the positioning flange (12) and is screwed with the positioning flange (12), and when the positioning flange (12) is inserted into the cavity die (1), the outer wall of the positioning flange (12) is tightly matched with the inner wall of the cavity die (1).
5. The flaring die for producing plastic pipes with sealing grooves for quick connection according to claim 4, wherein the flaring die core (3) is provided with a sealing ring (13) in sealing fit with a positioning flange (12), the end part of the positioning flange (12) extends to the edge near the annular flaring slot (6), and one end of the positioning flange (12) near the annular flaring slot (6) is provided with a cylindrical overflow channel (14).
6. The flaring die for producing plastic pipes with sealing grooves for quick connection according to claim 1, wherein the inner wall of the cavity half die (8) is provided with a feeding cavity (15), a transition cavity (16), a flaring cavity (17) and a sealing groove forming cavity (18) which are connected with each other, the aperture of the flaring cavity (17) is larger than that of the feeding cavity (15), the aperture of the transition cavity (16) is gradually enlarged from the feeding cavity (15) to the flaring cavity (17), the aperture of the sealing groove forming cavity (18) is larger than that of the flaring cavity (17), when the core die (2) is inserted into the cavity die (1), an annular flaring groove (6) on the flaring core (3) is positioned in the sealing groove forming cavity (18), and the parts, which are positioned in front of the annular flaring groove (6), on the flaring core (3) are respectively matched with the feeding cavity (15), the transition cavity (16) and the flaring cavity (17).
7. The flaring die for producing plastic pipes with sealing grooves for quick connection according to claim 6, characterized in that one end of the flaring core (3) far away from the positioning core (4) is detachably connected with a guiding positioning head (19), and a gap is formed between the guiding positioning head (19) and the inner wall of the feeding cavity (15).
8. The flaring die for producing the plastic pipe with the quick-connection sealing groove is characterized in that the guiding positioning head (19) is sleeved on the flaring core (3) and is in sealing connection with the flaring core, the bottom of the guiding positioning head (19) protrudes outwards to form a wall scraping ring (20) with a triangular section, an airflow buffer groove (21) is formed in the bottom of the wall scraping ring (20), and the airflow buffer groove (21) extends out of the outer wall of the end part of the flaring core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320540.6A CN108381901B (en) | 2018-04-11 | 2018-04-11 | Flaring die for producing plastic pipe with sealing groove for quick connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320540.6A CN108381901B (en) | 2018-04-11 | 2018-04-11 | Flaring die for producing plastic pipe with sealing groove for quick connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108381901A CN108381901A (en) | 2018-08-10 |
| CN108381901B true CN108381901B (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320540.6A Active CN108381901B (en) | 2018-04-11 | 2018-04-11 | Flaring die for producing plastic pipe with sealing groove for quick connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108381901B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681875B (en) * | 2021-10-26 | 2022-02-08 | 极限人工智能(北京)有限公司 | Flaring device, system and flaring method |
| CN114769442B (en) * | 2022-03-31 | 2023-12-22 | 公元股份有限公司 | Flaring machine capable of automatically feeding rubber rings |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201143770Y (en) * | 2007-12-05 | 2008-11-05 | 张欢庆 | Mold for processing plastic flared tube |
| CN201158143Y (en) * | 2007-12-21 | 2008-12-03 | 广东联塑机器制造有限公司 | Plastic tube enlarging apparatus with internal pressure inflation |
| CN105216294A (en) * | 2015-10-15 | 2016-01-06 | 鹤山市塑协科技有限公司 | A kind of expanding device of PVC-O tubing and flared method |
| CN205853354U (en) * | 2016-08-04 | 2017-01-04 | 中山环宇实业有限公司 | Pipe end can be made to form the flare forming apparatus of flaring structure |
| CN206967955U (en) * | 2017-07-13 | 2018-02-06 | 江苏贝尔机械有限公司 | A kind of hard PVC pipe expanding device |
| CN208148485U (en) * | 2018-04-11 | 2018-11-27 | 浙江天雁控股有限公司 | For producing the thick-wall plastic tubing mould with quick connection seal groove |
-
2018
- 2018-04-11 CN CN201810320540.6A patent/CN108381901B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201143770Y (en) * | 2007-12-05 | 2008-11-05 | 张欢庆 | Mold for processing plastic flared tube |
| CN201158143Y (en) * | 2007-12-21 | 2008-12-03 | 广东联塑机器制造有限公司 | Plastic tube enlarging apparatus with internal pressure inflation |
| CN105216294A (en) * | 2015-10-15 | 2016-01-06 | 鹤山市塑协科技有限公司 | A kind of expanding device of PVC-O tubing and flared method |
| CN205853354U (en) * | 2016-08-04 | 2017-01-04 | 中山环宇实业有限公司 | Pipe end can be made to form the flare forming apparatus of flaring structure |
| CN206967955U (en) * | 2017-07-13 | 2018-02-06 | 江苏贝尔机械有限公司 | A kind of hard PVC pipe expanding device |
| CN208148485U (en) * | 2018-04-11 | 2018-11-27 | 浙江天雁控股有限公司 | For producing the thick-wall plastic tubing mould with quick connection seal groove |
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| Publication number | Publication date |
|---|---|
| CN108381901A (en) | 2018-08-10 |
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