CN103009608B - Integrated device for controlling wall thickness by digital cam and servo motor - Google Patents
Integrated device for controlling wall thickness by digital cam and servo motor Download PDFInfo
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- CN103009608B CN103009608B CN201210581971.0A CN201210581971A CN103009608B CN 103009608 B CN103009608 B CN 103009608B CN 201210581971 A CN201210581971 A CN 201210581971A CN 103009608 B CN103009608 B CN 103009608B
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Classifications
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- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
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- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
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- 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
- B29C48/025—General arrangement or layout of plant
- B29C48/0255—General arrangement or layout of plant for extruding parallel streams of material, e.g. several separate parallel streams of extruded material forming separate articles
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
- B29C49/04108—Extrusion blow-moulding extruding several parisons parallel to each other at the same time
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
- B29C49/04116—Extrusion blow-moulding characterised by the die
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention relates to a plastic extrusion blowing wall thickness control device and particularly relates to an integrated device for controlling wall thickness by a digital cam and a servo motor. The integrated device comprises a digital cam software system and a servo motor control mechanical device, wherein the servo motor control mechanical device comprises the servo motor, a ball screw helical pair, a guide pillar, a fixed support plate, a movable support plate, a piston rod, a movable guide mechanism, a hydraulic gravity balancing mechanism, a cylinder body fixing plate, a precise cylinder body, an extrusion die head device and a stander. The integrated device is mainly used for controlling the wall thickness of a plastic extrusion bottle blowing machine in a dairy industry, the shape of the digital cam can be changed according to different products, and thus plastic products with different wall thicknesses can be produced by extrusion blowing. As the integrated device is provided with the digital cam and the servo motor, not only is the strength of the extruded products with the uniform wall thicknesses of the device greatly improved, but also raw materials are saved, the cooling time of the finished product is shortened, the defective percentage is lowered, and the production rate and the quality of the products are greatly improved.
Description
Technical field
The present invention relates to a kind of plastic extrusion blowing wall thickness control device, the particularly integrating device of a kind of digital cam and Serve Motor Control wall thickness.
Background technology
Hollow plastic product adopts the method for blowing to obtain, goods define minimum wall thickness (MINI W.) because of its requirement of strength, and early stage hollow blow molding equipment lacks system of parison wall thickness control system, minimum wall thickness (MINI W.) requirement is reached for making goods thinnest part, other position of goods will correspondingly thicken, and causes the waste of material.In order to save cost, shortening the part cooling time, accelerate article manufacturing cycle, a kind of both economical way adopts digital cam Serve Motor Control system of parison wall thickness exactly.At present, the wall thickness controller of domestic use has the product of the company such as Mu Ge (M00G), Bei Jialai (B & R), Siemens (SIEMENS).In the wall thickness control apparatus of these products, the control of the plug of vital part mainly adopts PID electrohydraulic proportional control valve to control or mechanical cam controls.By being combined by electro-hydraulic proportional reducing valve and hydraulicchange-over valve, and the size of forward and reverse opening of hydraulicchange-over valve is controlled according to outlet pressure, thus control the direction of liquid stream and the size of flow, the displacement of final control plug and direction, this device is owing to adopting hydraulic control, and therefore the feature such as life period hysteresis quality and system itself are easy to be subject to external influence and cause control accuracy lower.Though and adopt mechanical cam can obtain continuous control, the problem that life period is not delayed, the kinematic pair due to cam mechanism belongs to higher pair and namely puts or linear contact lay, and therefore wear extent is large, and a cam is only for a kind of hollow plastic product, and flexible degree is lower.Device of the present invention is the integrated system adopting digital cam and Serve Motor Control wall thickness in conjunction with the feature of above device, servomotor realizes controlling plug by ball screw, and the kinematic pair of this device have employed roller line slideway, has rigidity high, kinematic accuracy is high, brisk feature of moving.For mechanical cam only for a kind of limitation point of product, this device adopts digital cam according to the shape of different product changed digital cams, thus can have flexible feature, can produce the plastic products of various wall thickness control.Especially the digital cam in device is compared with mechanical cam mechanism, and it can realize being almost arbitrary cam curve, and not by the constraint of mechanism structure.The advantage of another uniqueness of digital cam is adopted to be its flexibility in device.The characteristics of motion of mechanical cam is customization, just immutable once complete.And the characteristics of motion of digital cam is determined by software, therefore same set of digitlization cam can realize the different characteristics of motion by changing software.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Shortcomings, provides that a kind of structure is simple, Wall Thickness Control System is easy to operate, and it is fast to have motor imagination, the integrating device with digital cam and Serve Motor Control wall thickness of the feature that control accuracy is high.
The technical solution adopted in the present invention is: the integrating device of a kind of digital cam and Serve Motor Control wall thickness, includes digital cam software systems and servomotor controller tool device;
Described servomotor controller tool device comprises servomotor, ball screw spiral pair, lead, fixed support plate, movable supporting plate, piston rod, guiding movable device, hydraulic pressure gravitational equilibrium mechanism, cylinder body fixed head, accurate cylinder body, extrusion die device and frame;
Described ball screw spiral pair is made up of ball-screw, ball and nut;
Described extrusion die device is made up of extrusion die, wall thickness control plug and hot-fluid deferent;
Described servomotor is linked together by flanged joint and ball-screw;
One end of described ball-screw is supported by precise roller deep groove ball bearing, and the other end is supported by a precise roller deep groove ball bearing and thrust ball bearing;
Described precise roller deep groove ball bearing is arranged on bearing supporting frame, and precise roller deep groove ball bearing and thrust ball bearing are arranged on fixed support plate;
Described nut is arranged on nut support plate, and nut, nut support plate, movable supporting plate, piston rod and wall thickness control plug are fixed with each other.
Described digital cam is with microprocessor for the numerical control system of core replaces the plug linear reciprocating motion desired by traditional cam mechanism realization, and it is a kind of typical electro-mechanical system.And the characteristics of motion of digital cam is determined by software, therefore same set of digital cam can realize the different characteristics of motion by changing software.
Control signal point in the shape that this device is produced by the software systems of digital cam, export responsive control signal, thus servomotor produces corresponding action under the effect of control signal.Finally, wall thickness control plug moves up and down under the effect of ball-screw, and the motion of plug makes die gap change, and reaches wall thickness control object.
Preferably, described digital cam software systems comprise man-machine interactive interface and digital cam software module, wherein man-machine interface provides user to edit digital cam control point data, data import PLC into by communication interface (RS232), and in PLC, specific data district preserves and controls servomotor action.
Preferably, described digital cam software systems adopt extrusion-blown modling system of parison wall thickness Control System Software module.
Preferably, described ball screw spiral pair adopts screw-drive mechanism, and between its spiral fluted leading screw and nut, intermediate transmission element is housed, described intermediate transmission element is ball.Ball screw spiral pair is mainly used to the rectilinear motion rotary motion of servomotor being transformed to plug.
Preferably, described guiding movable device is made up of feed screw nut, nut support frame, movable guide plate.This mechanism, under the effect of leading screw and lead, moves up and down.
Preferably, described hydraulic pressure gravitational equilibrium mechanism is made up of hydraulic cylinder, reversal valve, overflow valve, vane pump and piston rod.This mechanism is mainly used in hydraulic coupling and balances each other with the gravity of guiding movable device.
Preferably, described piston rod is arranged in accurate cylinder body, and accurate cylinder body is fixed in frame gripper shoe.
Preferably, described fixed support plate comprises the first fixed support plate and the second fixed support plate, and described servomotor is arranged on the first fixed support plate, and described precise roller deep groove ball bearing and thrust ball bearing are arranged on the second fixed support plate.
Extrusion die device is mainly used in wall thickness control plug and moves up and down acting on of screw mandrel, the size of adjustment die gap.
The present invention is mainly used in the wall thickness control of plastic extrusion bottle blowing machine in dairy industry, and can change the shape of digital cam according to different products, extrusion blow goes out the plastic products of different wall.Digital cam and servomotor use in this device by the present invention, by the goods extruding uniform wall thickness of this device not only intensity improve a lot, also save raw material simultaneously, shorten finished product cool time, reduce defect rate, substantially increase the quality of productivity ratio and product.
Accompanying drawing explanation
The newly-built initial setting up surface chart of Fig. 1 digital cam of the present invention;
The control point of Fig. 2 digital cam of the present invention;
The profile traces of Fig. 3 digital cam of the present invention;
Fig. 4 dragging control point amendment of the present invention digital cam profile;
Fig. 5 structural representation of the present invention;
Fig. 6 main sectional view of the present invention;
Extrusion die apparatus structure sectional view in Fig. 7 the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation, but be not limiting the scope of the invention.
As shown in Fig. 1-Fig. 7, the present embodiment is the shape changing digital cam according to different products, and extrusion blow goes out a kind of digital cam of the plastic products of different wall and the integrating device of Serve Motor Control wall thickness.It is fast that device has motor imagination, control accuracy high feature.Digital cam servomotor wall thickness control device includes digital cam software systems 16, servomotor 1, ball screw spiral is secondary, extrusion die device and hydraulic pressure gravity balance device 2, described servomotor 1 is arranged on the first fixed support plate 3, and is linked together by flanged joint 17 and ball-screw 7.One end of described ball-screw 7 is supported by precise roller deep groove ball bearing 18, and the other end is supported by a precise roller deep groove ball bearing 19 and thrust ball bearing 20.Precise roller deep groove ball bearing 18 is arranged on bearing supporting frame 4, and precise roller deep groove ball bearing 19 and thrust ball bearing 20 are arranged on the second fixed support plate 9.Described ball screw spiral pair is made up of ball-screw 7, ball 6-2 and nut 6.Nut 6 is arranged on above nut support plate 6-1.Nut 6, nut support plate 6-1, movable supporting plate 8, piston rod 10 and wall thickness control plug 15 are fixed with each other, can move up and down in guide support column 5 with nut 6 together.Described piston rod 10 is arranged in accurate cylinder body 11, and accurate cylinder body 11 is fixed in frame gripper shoe 13.Described extrusion die device forms primarily of extrusion die 14, wall thickness control plug 15 and hot-fluid deferent 12.Described digital cam software systems 16 mainly adopt extrusion-blown modling system of parison wall thickness Control System Software (ZJ-BHCS V1.0), provide the digital cam profile that extrusion-blown modling system of parison wall thickness controls, PLC and serial ports of computers data exchanging function, also comprise the man-machine interface of the manufacturing system of carrying out the control of extrusion-blown modling system of parison wall thickness with PLC.
The operation principle of the present embodiment is as follows: run digital cam software, occur software initial interface (Fig. 1).System initial default is for drawing setting means, and " drawing setting " radio button is clicked.When drawing generative approach cam mode, click the mouse, determine CN interactive editor control point, occur 5 squares in Fig. 2, roughly represent the shape of whole piece curve.The point produced using this CN click is generated the SPL of cam contour by system as control point, as Fig. 3.On each control point, show the numerical value that this point is current.If dissatisfied Contemporary Digital cam contour, can choose any control point, pin left mouse button and do not put dragging, this can change the digital cam height of curve (parison wall thickness) in this region, and the whole point data of real-time update, as shown in Figure 4.In the software systems 16 of digital cam, the shape of digital cam is set according to extrusion blow product wall thickness, exported by P LC and serial ports of computers data exchanging function and control servomotor 1 control signal, servomotor 1 starts to rotate under the control of wall thickness control signal, ball-screw 7 is rotated with servomotor 1 by flange-face coupling 17, ball-screw 7, ball and nut 6 form ball screw spiral pair and start working, the rotary motion of leading screw converts the upper of nut 6, lower movement, the nut 6 simultaneously fixed together with nut 6, nut support plate 6-1, movable supporting plate 8, piston rod 10 and wall thickness control plug 15 with start action.And the motion of wall thickness control plug 15 makes the die gap of extrusion die 14 change, reach product wall thickness and control object.
In order to make more effectively to work between servomotor 1 and ball spiral pair, and reduction produces huge cost owing to selecting servo motor model number to select excessive, this device can external hydro-cushion gravity installation 2, for offsetting the weight of nut 6, nut support plate 6-1, movable supporting plate 8, piston rod 10 and wall thickness control plug 15, or can additional balancing weight mechanism for offsetting above-mentioned part gravity.To realize reducing servomotor cost, the fast and accurate high of device motor imagination.
Claims (7)
1., with an integrating device for digital cam and Serve Motor Control wall thickness, include digital cam software systems and servomotor controller tool device, it is characterized in that:
Described servomotor controller tool device comprises servomotor, ball screw spiral pair, lead, fixed support plate, movable supporting plate, piston rod, guiding movable device, hydraulic pressure gravitational equilibrium mechanism, cylinder body fixed head, accurate cylinder body, extrusion die device and frame;
Described ball screw spiral pair is made up of ball-screw, ball and nut;
Described extrusion die device is made up of extrusion die, wall thickness control plug and hot-fluid deferent;
Described servomotor is linked together by flanged joint and ball-screw;
One end of described ball-screw is supported by precise roller deep groove ball bearing, and the other end is supported by a precise roller deep groove ball bearing and thrust ball bearing;
Described precise roller deep groove ball bearing is arranged on bearing supporting frame, and precise roller deep groove ball bearing and thrust ball bearing are arranged on fixed support plate;
Described nut is arranged on nut support plate, and nut, nut support plate, movable supporting plate, piston rod and wall thickness control plug are fixed with each other;
Described digital cam software systems comprise man-machine interactive interface and digital cam software module, wherein man-machine interface provides user to edit digital cam control point data, data import PLC into by communication interface RS232, and in PLC, specific data district preserves and controls servomotor action.
2. the integrating device of a kind of digital cam according to claim 1 and Serve Motor Control wall thickness, is characterized in that: described digital cam software systems adopt extrusion-blown modling system of parison wall thickness Control System Software module.
3. the integrating device of a kind of digital cam according to claim 1 and Serve Motor Control wall thickness, it is characterized in that: described ball screw spiral pair adopts screw-drive mechanism, between its spiral fluted leading screw and nut, intermediate transmission element is housed, described intermediate transmission element is ball.
4. the integrating device of a kind of digital cam according to claim 1 and Serve Motor Control wall thickness, is characterized in that: described guiding movable device is made up of feed screw nut, nut support frame, movable guide plate.
5. the integrating device of a kind of digital cam according to claim 1 and Serve Motor Control wall thickness, is characterized in that: described hydraulic pressure gravitational equilibrium mechanism is made up of hydraulic cylinder, reversal valve, overflow valve, vane pump and piston rod.
6. the integrating device of a kind of digital cam according to claim 1 and Serve Motor Control wall thickness, is characterized in that: described piston rod is arranged in accurate cylinder body, and accurate cylinder body is fixed in frame gripper shoe.
7. the integrating device of a kind of digital cam according to claim 1 and Serve Motor Control wall thickness, it is characterized in that: described fixed support plate comprises the first fixed support plate and the second fixed support plate, described servomotor is arranged on the first fixed support plate, and described precise roller deep groove ball bearing and thrust ball bearing are arranged on the second fixed support plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210581971.0A CN103009608B (en) | 2012-12-28 | 2012-12-28 | Integrated device for controlling wall thickness by digital cam and servo motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210581971.0A CN103009608B (en) | 2012-12-28 | 2012-12-28 | Integrated device for controlling wall thickness by digital cam and servo motor |
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| CN103009608A CN103009608A (en) | 2013-04-03 |
| CN103009608B true CN103009608B (en) | 2015-04-29 |
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| CN201210581971.0A Expired - Fee Related CN103009608B (en) | 2012-12-28 | 2012-12-28 | Integrated device for controlling wall thickness by digital cam and servo motor |
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| CN111186120A (en) * | 2018-11-15 | 2020-05-22 | 中达电子零组件(吴江)有限公司 | Control method and system of electric bottle blowing machine |
| CN109878062A (en) * | 2019-04-23 | 2019-06-14 | 上海弋朋自动化科技有限公司 | A kind of integrating device of motor driven crank link mechanism control bottle blowing machine wall thickness |
| CN115071109B (en) * | 2022-07-22 | 2022-11-04 | 广东乐善智能装备股份有限公司 | Neck ring mold control method and system of extruder in bottle blowing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203004295U (en) * | 2012-12-28 | 2013-06-19 | 浙江机电职业技术学院 | Device for servo control on wall thickness by digital cam wheel |
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| CN101966750B (en) * | 2010-08-27 | 2013-04-10 | 华南理工大学 | Extrusion blow molding machine-head-and-die-orifice gap electrical adjustment device and realization method and application thereof |
| CN202241953U (en) * | 2011-07-24 | 2012-05-30 | 天津市三山塑料有限公司 | Wall thickness controller |
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| CN203004295U (en) * | 2012-12-28 | 2013-06-19 | 浙江机电职业技术学院 | Device for servo control on wall thickness by digital cam wheel |
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Inventor after: Lai Jianliang Inventor after: Lou Xiangming Inventor after: Gao Yongxiang Inventor after: Lv Yongfeng Inventor after: Xu Chunwei Inventor after: Huang Jinyong Inventor after: Du Hongwen Inventor before: Lai Jianliang Inventor before: Gao Yongxiang Inventor before: Lv Yongfeng Inventor before: Xu Chunwei Inventor before: Huang Jinyong Inventor before: Du Hongwen |
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Effective date of registration: 20131230 Address after: Hangzhou City, Zhejiang province Binjiang District 310053 shore road 528 Applicant after: Zhejiang Institute of Mechanical & Electrical Engineering Applicant after: Hangzhou Wahaha Group Co., Ltd. Address before: Hangzhou City, Zhejiang province Binjiang District 310053 shore road 528 Applicant before: Zhejiang Institute of Mechanical & Electrical Engineering |
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