CN106003749B - A kind of production equipment of heavy caliber structure-wall pipe material and the technique for preparing tubing - Google Patents
A kind of production equipment of heavy caliber structure-wall pipe material and the technique for preparing tubing Download PDFInfo
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- CN106003749B CN106003749B CN201610481391.2A CN201610481391A CN106003749B CN 106003749 B CN106003749 B CN 106003749B CN 201610481391 A CN201610481391 A CN 201610481391A CN 106003749 B CN106003749 B CN 106003749B
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- heavy caliber
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- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 47
- 238000001746 injection moulding Methods 0.000 claims abstract description 11
- 238000009966 trimming Methods 0.000 claims abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005253 cladding Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 210000004262 dental pulp cavity Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/82—Cores or mandrels
- B29C53/821—Mandrels especially adapted for winding and joining
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/84—Heating or cooling
- B29C53/845—Heating or cooling especially adapted for winding and joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
Abstract
The present invention relates to structure-wall pipe material preparation technical fields, and in particular to a kind of production equipment of heavy caliber structure-wall pipe material and the technique for preparing tubing.The equipment includes bell and spigot injection molding unit, several groups winding station unit, inner wall forming unit, cage walls forming unit and trimming unit, and inner wall forming unit and cage walls forming unit have the relative position that can be adjusted with winding station unit；The equipment is produced using 2 or 3 winding station units, can be made full use of the production capacity of equipment, be greatly improved production efficiency.It is produced using inner wall and cage walls substep, 5%-10% can be improved in the ring stiffness of identical structure, identical weight, tubing, to save material.
Description
Technical field
The present invention relates to structure-wall pipe material preparation technical fields, and in particular to a kind of production of heavy caliber structure-wall pipe material is set
Technique that is standby and preparing tubing.
Background technique
Traditional structure-wall pipe material production technology high temperature and is melted the melt body of state shape and is squeezed through internal layer and outer layer mold in production
Out, simultaneously wound to be respectively formed the inner wall and layer structure wall of tubing on Wound Dies, in the junction of outer wall and inner wall,
Because interior layered material and outer layer material are combined together under melting state, in conjunction with rear because of cooling outer wall inner layer tightening, inner wall is squeezed
By inner wall material outwardly against protrusion is formed, because expecting that the cladding face of raised pair of interior support pipe increases, inner support tube because outer layer material and with
The high temperature of internal layer junction makes phase heated softening, and in tubing cooling procedure, inner support tube will become oval (sd becomes smaller), centroid
Becoming smaller away from (e) and total height (h), the moment of inertia in tubing section becomes smaller, so that the whole ring stiffness of tubing becomes smaller, it is especially big straight
The tubing of diameter, so inner support tube deformation is bigger, influences the ring stiffness of tubing entirety bigger because inner wall is very thick.
In addition, traditional structure-wall pipe material production technology, since what is taken is one-to-one operation, mold exchange, preheating,
The operation such as cooling, inevitably occupies the mass production time, seriously hinders the raising of production efficiency.
Summary of the invention
The purpose of the present invention is to solve the above problems, provide a kind of production equipment of heavy caliber structure-wall pipe material
And the technique for preparing tubing.
In order to achieve the above object of the invention, the invention adopts the following technical scheme:
A kind of production equipment of heavy caliber structure-wall pipe material, the equipment include bell and spigot injection molding unit, several groups winding work
Bit location, inner wall forming unit, cage walls forming unit and trimming unit, inner wall forming unit and cage walls forming unit have
The relative position that can be adjusted with winding station unit；
The Wound Dies that station unit includes pedestal and is placed on pedestal are wound, pedestal is equipped with rolling mechanism and preheating
Device, preheating apparatus and pedestal are using the adjustable connection in position relative to mold；
Inner wall forming unit includes inner wall extruder, inner wall extrusion die and inner wall heating device；
Cage walls forming unit includes cage walls extruder, cladding pipe mold and cladding pipe heating device.
Preferably, inner wall forming unit and cage walls forming unit are connect using guide rail with ground, or winding station list
Member is connect using guide rail with ground.
Preferably, the structure of the Wound Dies are as follows:
Including central axis, the left receipts plate, right receipts plate and lower receipts plate of columnar main body are surrounded；
Left receipts plate and the right lower inner wall for receiving plate pass through several rotation cylinders and center axis connection, and rotation cylinder lower end
Hinged with left receipts plate or right receipts plate inner wall, upper end is hinged with central axis；
Left receipts plate and the right upper inside wall for receiving plate are installed with bending plate respectively, and two bending plates are hinged below, and common logical
Support plate and center axis connection are crossed, support plate top and two bending plates are hinged, and support plate is connected with central axis below；
Lower receipts plate is connected by vertical cylinder and center axis connection, vertical cylinder upper end and central axis, lower end and lower receipts plate
It is connected.
The technique that heavy caliber pipe is prepared using a kind of production equipment of heavy caliber structure-wall pipe material, which is characterized in that packet
Include following steps:
(1) bellmouth and socket are prepared using the injection molding of bell and spigot injection molding unit, and bellmouth and socket is installed on
On the Wound Dies for winding station unit；
(2) bellmouth or socket are located at using the beginning that preheating apparatus winds the Wound Dies on station unit to first
Place is preheated, and after reaching predetermined temperature, prepares pipe material inner wall using inner wall extruder extrusion, and mutually glue with bellmouth or socket
It closes；Before tubing completes inner wall winding, starting preheating apparatus preheats the Wound Dies of socket or socket, and
Ensure that Wound Dies temperature reaches production requirement when inner wall extruder reaches at this；In inner wall extruder extrusion molding is completed
The bonding of wall and socket or bellmouth；And start the preheating apparatus on second winding station unit before this is done,
It is preheated on the beginning of the Wound Dies in bellmouth or spigot, and according to above-mentioned steps to second winding station list
The combination of the pipe material inner wall winding and inner wall and bell and spigot of member and other winding station units；
(3) after the tubing on station unit to be wound is cooling, using the cage walls extruder of cage walls forming unit to it
Carry out the Wrapping formed of cage walls；The inner wall of tubing is heated using preheating apparatus first, is then squeezed using cage walls
Machine squeeze out to it Wrapping formed out, before Wrapping formed completion, starts preheating apparatus on next winding station unit
Pipe material inner wall thereon is preheated；
(4) the winding station unit after the completion of winding cage walls is transferred to amending unit and is modified and demoulds.
Preferably, step (2) preheating apparatus is 120-160 DEG C to the heating temperature of preheating apparatus.
Compared with prior art, the present invention beneficial effect is:
If produced using 2 or 3 winding station units, after finishing the first root canal material, two extrusion systems
System (inner wall forming unit and cage walls forming unit) is moved to next winding station cellular manufacture the second root canal material at once,
Second or third winding station cellular manufacture while, can be by the mold with tubing on first winding station unit
Demoulding is changed, without waiting for more mold exchange, the production capacity of equipment can be made full use of, greatly improve production efficiency.
2 and 2 or more winding station units, due to eliminating because more mold exchange keeps extrusion system out of service
Time, the preheating system of mold eliminate the mold preheating time, and have the cooling tubing of sufficient rotary work station, to mention
High production efficiency.
It is produced using inner wall and cage walls substep, integrally reheats its surface wrap cage walls after cooling is hardened in inner wall,
One, because inner wall only have surface be it is hot, inner wall and cage walls junction are heated few, and it is few that the support tube in cage walls absorbs heat,
It deforms small；Two, inner wall has cooled down, and the material of junction will not be extruded into outside structural portion by cage walls in winding because of cooling meat
(bonded area can be increased by being extruded into outside, so that support tube is absorbed more heats, led to bigger deformation), can greatly reduce support
Extruding of the deformation and outer wall of pipe to inner wall reduces inner support tube oval (sd) degree, increases centroid away from (e) and total height (h), pipe
The moment of inertia in material section becomes larger, so that the whole ring stiffness of tubing becomes larger.It is learnt through test, it is identical using identical structure
5%-10% can be improved in the ring stiffness of weight, tubing, to save material.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of Wound Dies of the present invention；
Fig. 3 is the structural schematic diagram of Wound Dies working condition of the present invention.
In figure: 1 bell and spigot injection molding unit, 2 winding station units, 3 inner wall forming units, 4 cage walls forming units, 5 repair
Whole unit, 6 guide rails, 201 pedestals, 202 Wound Dies, 203 rolling mechanisms, 204 preheating apparatus, 301 inner wall extruders, 302
Inner wall extrusion die, 303 inner wall heating devices, 401 cage walls extruders, 402 cladding pipe molds, 403 cladding pipe heating devices,
221 central axises, 222 right receipts plates, 223 left receipts plates, 224 lower receipts plates, 225 rotation cylinders, 226 vertical cylinders, 227 support plates, 228
Bending plate.
Specific embodiment
Below by specific embodiment the technical scheme of the present invention will be further described explanation.
If raw material employed in the embodiment of the present invention is raw material commonly used in the art without specified otherwise, implement
Method employed in example, is the conventional method of this field.
Embodiment:
A kind of production equipment of heavy caliber structure-wall pipe material, the equipment include bell and spigot injection molding unit 1, several groups winding work
Bit location 2, inner wall forming unit 3, cage walls forming unit 4 and trimming unit 5, inner wall forming unit 3 and cage walls molding are single
Member 4 has the relative position that can be adjusted with winding station unit 2；Winding station unit 2 includes pedestal 201 and is placed in pedestal
Wound Dies 202 on 201, pedestal 201 are equipped with rolling mechanism 203 and preheating apparatus 204, preheating apparatus 204 and base
Seat 201 is using the adjustable connection in position relative to mold；Inner wall forming unit 3 includes inner wall extruder 301, inner wall extrusion
Mold 302 and inner wall heating device 303；Cage walls forming unit 4 includes cage walls extruder 401, cladding pipe mold 402 and packet
Cover pipe heating device 403.Inner wall forming unit 3 and cage walls forming unit 4 are connect using guide rail 6 with ground, or winding station
Unit 2 is connect using guide rail 6 with ground.
The structure of the Wound Dies 202 are as follows: including central axis 221, surround left receipts plate 223, the right side of columnar main body
Receive plate 222 and lower receipts plate 224；Left receipts plate 223 and the right lower inner wall for receiving plate 222 pass through several rotation cylinders 225 and center
Axis 221 connects, and 225 lower end of rotation cylinder and left 223 or right receipts 222 inner walls of plate of receipts plate are hinged, and upper end and central axis 221 are cut with scissors
It connects；Left receipts plate 223 and the right upper inside wall for receiving plate 222 are installed with bending plate 228 respectively, and two bending plates 228 are following hinged, and
It is connect commonly through support plate 227 with central axis 221,227 top of support plate is hinged with two bending plates 228, under support plate 227
Side and central axis 221 are connected；Lower receipts plate 224 is connect by vertical cylinder 226 with central axis 221, and 226 upper end of vertical cylinder is in
Mandrel 221 is connected, and lower end and lower receipts plate 224 are connected.
The technique that heavy caliber pipe is prepared using the equipment, comprising the following steps:
(1) bellmouth and socket are prepared using 1 injection molding of bell and spigot injection molding unit, and bellmouth and socket is installed on
On the Wound Dies 202 for winding station unit 2；
(2) it is located at using the beginning that preheating apparatus 204 winds the Wound Dies 202 on station unit 2 to first and is held
Mouthful or spigot preheated, after reaching predetermined temperature, pipe material inner wall is prepared using 301 extrusion of inner wall extruder, and with hold
Mouth or socket are bonding；Before tubing completes inner wall winding, start preheating apparatus 204 for socket or the winding mould of socket
Tool 202 is preheated, and ensures that, when inner wall extruder 301 reaches at this, 202 temperature of Wound Dies reaches production requirement；
The bonding of inner wall and socket or bellmouth is completed in 301 extrusion molding of inner wall extruder；And start second before this is done
The preheating apparatus 204 on station unit 2 is wound, carries out pre-add in bellmouth or spigot on the beginning of the Wound Dies 202
Heat, and pipe material inner walls winding and inner wall according to above-mentioned steps to second winding station unit 2 and other winding station units 2
And the combination of bell and spigot；Preheating apparatus 204 is 120-160 DEG C to the heating temperature of preheating apparatus 204
(3) after the tubing on station unit 2 to be wound is cooling, using the cage walls extruder 401 of cage walls forming unit 4
The Wrapping formed of cage walls is carried out to it；The inner wall of tubing is heated using preheating apparatus 204 first, then using packet
It covers pipe extruder 401 and it squeeze out Wrapping formed, before Wrapping formed completion, start on next winding station unit 2
Preheating apparatus 204 preheats pipe material inner wall thereon；
(4) the winding station unit 2 after the completion of winding cage walls is transferred to amending unit and is modified and demoulds.
Claims (4)
1. a kind of technique that the production equipment of heavy caliber structure-wall pipe material prepares heavy caliber pipe, which is characterized in that including following
Step:
(1) bellmouth and socket are prepared using bell and spigot injection molding unit (1) injection molding, and bellmouth and socket is installed on and twined
On the Wound Dies (202) of station unit (2)；
(2) it is located at using the beginning that preheating apparatus (204) wind the Wound Dies (202) on station unit (2) to first
Bellmouth or spigot are preheated, and after reaching predetermined temperature, prepare pipe material inner wall using inner wall extruder (301) extrusion, and
It is bonding with bellmouth or socket；Before tubing completes inner wall winding, starting preheating apparatus (204) is by socket or socket
Wound Dies (202) are preheated, and ensure that, when inner wall extruder (301) reaches at this, Wound Dies (202) temperature reaches
To production requirement；The bonding of inner wall and socket or bellmouth is completed in (301) extrusion molding of inner wall extruder；And complete the operation it
Preheating apparatus (204) on second winding station unit (2) of preceding starting, on the beginning of the Wound Dies (202) in holding
Mouth or spigot are preheated, and according to above-mentioned steps to second winding station unit (2) and other winding station units
(2) combination of pipe material inner wall winding and inner wall and bell and spigot；
(3) after the tubing on station unit (2) to be wound is cooling, using the cage walls extruder of cage walls forming unit (4)
(401) the Wrapping formed of cage walls is carried out to it；The inner wall of tubing is heated using preheating apparatus (204) first, so
It squeeze out Wrapping formed using cage walls extruder (401) afterwards, before Wrapping formed completion, starts next winding work
Preheating apparatus (204) preheats pipe material inner wall thereon on bit location (2)；
(4) the winding station unit (2) after the completion of winding cage walls is transferred to amending unit and is modified and demoulds；
The production equipment of above-mentioned heavy caliber structure-wall pipe material includes bell and spigot injection molding unit (1), several groups winding station unit
(2), inner wall forming unit (3), cage walls forming unit (4) and trimming unit (5), inner wall forming unit (3) and cage walls at
Type unit (4) has the relative position that can be adjusted with winding station unit (2)；
Winding station unit (2) includes pedestal (201) and the Wound Dies (202) being placed on pedestal (201), on pedestal (201)
Equipped with rolling mechanism (203) and preheating apparatus (204), preheating apparatus (204) and pedestal (201) are using relative to mold
The adjustable connection in position；
Inner wall forming unit (3) includes inner wall extruder (301), inner wall extrusion die (302) and inner wall heating device (303)；
Cage walls forming unit (4) includes cage walls extruder (401), cladding pipe mold (402) and cladding pipe heating device
(403).
2. a kind of production equipment of heavy caliber structure-wall pipe material according to claim 1 prepares the technique of heavy caliber pipe,
It is characterized in that, inner wall forming unit (3) and cage walls forming unit (4) are connect using guide rail (6) with ground, or winding station
Unit (2) is connect using guide rail (6) with ground.
3. a kind of production equipment of heavy caliber structure-wall pipe material according to claim 1 prepares the technique of heavy caliber pipe,
It is characterized in that, the structure of the Wound Dies (202) are as follows:
Including central axis (221), left receipts plate (223), right receipts plate (222) the He Xiashou plate (224) of columnar main body are surrounded；
The left lower inner wall for receiving plate (223) He Youshou plate (222) is connected by several rotation cylinders (225) and central axis (221)
It connects, and rotation cylinder (225) lower end and left receipts plate (223) or right receipts plate (222) inner wall are hinged, upper end and central axis (221) are cut with scissors
It connects；
The left upper inside wall for receiving plate (223) He Youshou plate (222) is installed with bending plate (228) respectively, under two bending plates (228)
Side is hinged, and connect commonly through support plate (227) with central axis (221), support plate (227) top and two bending plates
(228) hingedly, support plate (227) is connected with central axis (221) below；
Lower receipts plate (224) is connect by vertical cylinder (226) with central axis (221), vertical cylinder (226) upper end and central axis
(221) it is connected, lower end and lower receipts plate (224) are connected.
4. a kind of production equipment of heavy caliber structure-wall pipe material according to claim 1 prepares the technique of heavy caliber pipe,
It is characterized in that, step (2) preheating apparatus (204) is 120-160 DEG C to the heating temperature of preheating apparatus (204).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481391.2A CN106003749B (en) | 2016-06-23 | 2016-06-23 | A kind of production equipment of heavy caliber structure-wall pipe material and the technique for preparing tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481391.2A CN106003749B (en) | 2016-06-23 | 2016-06-23 | A kind of production equipment of heavy caliber structure-wall pipe material and the technique for preparing tubing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106003749A CN106003749A (en) | 2016-10-12 |
| CN106003749B true CN106003749B (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610481391.2A Active CN106003749B (en) | 2016-06-23 | 2016-06-23 | A kind of production equipment of heavy caliber structure-wall pipe material and the technique for preparing tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106003749B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077613A (en) * | 2007-06-25 | 2007-11-28 | 李富春 | Method for producing steel mesh reinforced plastic composite pipes and its self-contained equipment |
| CN104786514A (en) * | 2015-03-13 | 2015-07-22 | 浙江双林机械股份有限公司 | Continuous fiber reinforced tube processing apparatus and processing method thereof |
| CN205202226U (en) * | 2015-11-18 | 2016-05-04 | 郁世超 | Winding pipe multistation extrusion system |
| CN205889911U (en) * | 2016-06-23 | 2017-01-18 | 郁世超 | Production facility of heavy -calibre structure wall tubular product |
-
2016
- 2016-06-23 CN CN201610481391.2A patent/CN106003749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077613A (en) * | 2007-06-25 | 2007-11-28 | 李富春 | Method for producing steel mesh reinforced plastic composite pipes and its self-contained equipment |
| CN104786514A (en) * | 2015-03-13 | 2015-07-22 | 浙江双林机械股份有限公司 | Continuous fiber reinforced tube processing apparatus and processing method thereof |
| CN205202226U (en) * | 2015-11-18 | 2016-05-04 | 郁世超 | Winding pipe multistation extrusion system |
| CN205889911U (en) * | 2016-06-23 | 2017-01-18 | 郁世超 | Production facility of heavy -calibre structure wall tubular product |
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| Publication number | Publication date |
|---|---|
| CN106003749A (en) | 2016-10-12 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190201 Address after: 311251 Tu Pu Dai village and Mu Ting Xu village, Lin Pu town, Xiaoshan District, Hangzhou, Zhejiang Applicant after: HONGSHENG PLASTICS (HANGZHOU) CO.,LTD. Address before: 311251 Japan's 1 Industrial Park, Xiaoshan, Hangzhou, Zhejiang Applicant before: Yu Shichao Applicant before: Zhou Maozhen |
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| TA01 | Transfer of patent application right | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A production equipment and process for preparing large-diameter structural wall pipes Effective date of registration: 20231108 Granted publication date: 20190326 Pledgee: Zhejiang Xiaoshan rural commercial bank Limited by Share Ltd. Lin Pu branch Pledgor: HONGSHENG PLASTICS (HANGZHOU) CO.,LTD. Registration number: Y2023980064552 |
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