CN115057617A - Glass tube bottle-making taper mouth forming device and method - Google Patents
Glass tube bottle-making taper mouth forming device and method Download PDFInfo
- Publication number
- CN115057617A CN115057617A CN202210688264.5A CN202210688264A CN115057617A CN 115057617 A CN115057617 A CN 115057617A CN 202210688264 A CN202210688264 A CN 202210688264A CN 115057617 A CN115057617 A CN 115057617A
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- Prior art keywords
- glass tube
- station
- taper
- forming
- forming die
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/06—Cutting or splitting glass tubes, rods, or hollow products
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/045—Tools or apparatus specially adapted for re-forming tubes or rods in general, e.g. glass lathes, chucks
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/09—Reshaping the ends, e.g. as grooves, threads or mouths
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a forming device and a forming method for a conical opening of a glass tube bottle, and relates to the technical field of forming of glass tube bottles. The invention comprises a workbench; the working area comprises a first station area, a second station area and a third station area; the glass tube clamping mechanism is arranged above the first station; the heating device is arranged at the second station; the glass tube taper mouth preforming device is arranged at the third station; the taper forming die assembly comprises a first taper forming die tool, a second taper forming die tool and a third taper forming die tool; the cutting mark device is arranged at the seventh station; and the cutting device is arranged at the eighth station. The invention solves the problems of low precision and low productivity of the existing glass tube bottle-making taper mouth forming machine by arranging a plurality of forming mechanisms on the concentric circles of the glass tube clamping mechanisms in an integrated mode.
Description
Technical Field
The invention belongs to the technical field of glass tube bottle-making forming, and particularly relates to a glass tube bottle-making taper mouth forming device and method.
Background
In medicine packaging, vial bottles made of glass, pre-filled and sealed vials, ampoule bottles, cassette bottles and the like are often used, and tube bottles are generally made into various packaging bottles by utilizing formed glass tubes and processing the glass tubes through multiple processes. In the method for forming the taper of the tube-made packaging bottle, the glass tube which rotates at a high speed is usually rotated intermittently along with a circular workbench and is matched with forming devices at various stations on the fixed workbench to complete the taper forming. However, in the actual use process, the coaxiality of the glass tube which depends on intermittent rotary motion and each station on the fixed workbench is difficult to ensure to be consistent, and particularly after long-time use, the abrasion among parts is aggravated, the precision is further reduced, the forming quality of the cone mouth of the tube-made bottle is seriously influenced, and the yield is reduced; secondly, as the taper forming is an intermittent forming action, a plurality of similar glass tube processing and forming mechanisms are required to be arranged on the fixed working table, the structure becomes complex, the glass tube processing and forming mechanism is too bulky, and the manufacturing cost is high; meanwhile, the glass tube needs to be intermittently formed at a plurality of stations to complete the forming of the taper, and the glass tube cannot always keep the forming operation in the intermittent rotation process, so that the productivity in unit time is reduced.
Aiming at the problems, a glass tube bottle making taper mouth forming device and a glass tube bottle making taper mouth forming method which are high in precision, simple in structure and capable of meeting the capacity requirement need to be designed.
Disclosure of Invention
The invention aims to provide a forming device and a forming method for a glass tube bottle making taper opening.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a glass tube bottle-making taper mouth forming device, which comprises a workbench; the working area comprises a first station area, a second station area and a third station area which are arranged on the workbench; the first station area comprises a first station, a second station and a third station, wherein the first station is arranged at the center of the workbench and used for forming the taper of the glass tube, the second station is sequentially arranged and used for heating the glass tube, and the third station is used for pre-forming the taper of the glass tube; the second station area comprises a pair of fourth stations, a pair of fifth stations and a plurality of pairs of sixth stations which are symmetrically arranged; wherein the third station area comprises a seventh station and an eighth station; the glass tube clamping mechanism is coaxially arranged above the first station and clamps the glass tube to run at a high speed; the heating device is arranged at the second station; the glass tube taper mouth preforming device is arranged at the third station; the taper forming die assembly comprises a first taper forming die tool, a second taper forming die tool and a third taper forming die tool which are respectively arranged at a fourth station, a fifth station and a sixth station; the cutting mark device is arranged at the seventh station; and the cutting device is arranged at the eighth station.
As a preferable technical scheme of the invention, the heating device is provided with an automatic control ignition assembly and a pneumatic valve for controlling the gas flow and opening and closing.
As a preferable technical scheme of the invention, the heating device is connected with the output end of the rotary cylinder, and the rotary cylinder drives and adjusts the position of a combustion port of the heating device.
As a preferred technical scheme of the present invention, the first, second and third bevel forming die assemblies each include two bevel forming extrusion heads, the number of which can be adjusted according to the bevel forming process, and the cylinder controls the link mechanism to implement the motion of each set of bevel forming die.
As a preferred technical scheme of the invention, the center of the first station is provided with an ejector pin device, and the ejector pin device is used for fixing and centering the length of the glass tube.
As a preferable technical scheme of the invention, the glass tube clamping mechanism, the heating device, the glass tube taper mouth preforming device and the cutting device are arranged under the table surface of the workbench in an inverted mode.
The invention also provides a forming method of the glass tube bottle-making taper mouth, which comprises the following steps:
the method comprises the following steps that firstly, a rotary cylinder controls a heating device to rotate to enable a combustion port to be aligned to a glass tube, a pneumatic valve controls gas inflow and flow rate, and the glass tube is heated after automatic ignition is carried out, so that the glass tube is heated and softened at high temperature;
step two, after the glass tube is softened, the pneumatic valve is closed, heating is stopped, and the heating device returns to the original position under the action of the air cylinder;
performing the softened glass tube taper by the glass tube taper performing device under the action of the cylinder, and returning to the original position after finishing the performing;
after the heating device repeats the heating action to heat the glass tube again, the thimble device lifts under the action of the cylinder to insert the thimble into the taper mouth of the glass tube, the cylinder controls the first taper mouth forming die tool to form the taper mouth of the heated glass tube, and after the process, the cylinder respectively controls the first taper mouth forming die tool and the thimble device to return to the original position;
step five, the heating device heats the glass tube again, after heating, the second taper forming die tool and the ejector pin device form the taper of the glass tube again, after forming, the heating device repeats heating action to heat the glass tube again, and similarly, the third taper forming die tool and the ejector pin device finally form the taper of the glass tube;
and step six, after the taper opening is formed, the cylinder controls the cutting mark device to cut a shallow cross on the upper part of the taper opening of the glass tube, then the cutting mark part is cut off through the cutting device, and the glass tube which is formed after the cutting is finished is transferred to the next procedure.
As a preferred technical solution of the present invention, before the step one, the method further comprises the following steps: and (4) fixing the length of the glass tube concentric with the third station by the ejector pin device.
The invention has the following beneficial effects:
1. according to the invention, a plurality of forming mechanisms are arranged on the concentric circle of the glass tube clamping mechanism in an integrated manner, each forming mechanism and the glass tube clamping mechanism form a set of forming device, and the internal forming mechanism is called according to the forming process, so that the glass tube and the forming device are always in a concentric state in the whole process, the forming quality of the taper opening is well ensured, and the yield is improved.
2. The forming device is used for modularized positioning, installation and conical opening forming, can realize quick assembly, disassembly and replacement, can realize simultaneous working of a plurality of sets, and improves the forming yield of the conical opening in unit time.
3. According to the invention, the thimble device is assembled at the center of the first station, and the thimble device can be used for fixing and centering the length of the glass tube.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram according to a first embodiment;
FIG. 2 is a schematic structural diagram of the second embodiment;
in the drawings, the components represented by the respective reference numerals are listed below:
1-heating device, 2-glass tube taper preforming device, 3-cutting device, 4-first taper forming die tool, 5-second taper forming die tool, 6-third taper forming die tool, 7-cutting mark device, 8-ejector pin device, 9-glass tube clamping mechanism, 11-workbench, 12-glass tube, 101-first station, 102-second station, 103-third station, 104-fourth station, 105-fifth station, 106-sixth station, 107-seventh station, 108-eighth station.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention is a forming device for forming a tapered mouth of a glass tube bottle, including a working table 11; a working area including a first station area, a second station area and a third station area which are arranged on the worktable 11; the first station area comprises a first station 101 which is arranged at the center of the workbench 11 and is used for forming the taper of the glass tube 12, a second station 102 which is arranged in sequence and is used for heating the glass tube 12, and a third station 103 which is used for preforming the taper of the glass tube 12; the second station area comprises a pair of fourth stations 104, a pair of fifth stations 105 and a plurality of pairs of sixth stations 106 which are symmetrically arranged; the third station area includes a seventh station 107 and an eighth station 108; the glass tube clamping mechanism 9 is coaxially arranged above the first station 101, and clamps the glass tube 12 for high-speed operation; arranging a plurality of forming mechanisms on a concentric circle of the glass tube clamping mechanism 9 in an integrated manner, sequentially acting to complete the forming of the taper opening of the glass tube 12, forming a set of forming device by each forming mechanism and the glass tube clamping mechanism 9, calling the internal forming mechanism according to the forming process, keeping the glass tube 12 and the forming device in a concentric state all the time in the whole process, well ensuring the forming quality of the taper opening and improving the yield; the forming device is positioned in a modularized way, installed and formed in the taper opening, and is quickly disassembled, assembled and replaced, so that a plurality of sets of forming devices can work simultaneously, and the forming yield of the taper opening in unit time is improved; the concentricity precision of the glass tube 12 and the forming station can be ensured, the precision is high, the structure is simple, and the capacity requirement is met; the heating device 1, the heating device 1 is arranged at the second station 102; the glass tube taper mouth preforming device 2 is arranged at the third station 103, the glass tube taper mouth preforming device 2 performs the heated glass tube taper mouth, and the air cylinder is used for controlling the displacement of the heated glass tube taper mouth; the taper forming die assembly comprises a first taper forming die tooling 4, a second taper forming die tooling 5 and a third taper forming die tooling 6 which are respectively arranged at a fourth station 104, a fifth station 105 and a sixth station 106, and the first taper forming die tooling 4, the second taper forming die tooling 5 and the third taper forming die tooling 6 are symmetrically arranged in pairs; the cutting mark device 7 is arranged at the seventh station 107, the glass tube 12 with the formed conical opening is cut into a shallow cross at the upper part of the conical opening through the cutting mark device 7, and then the glass tube 12 is cut at the cutting mark through the cutting device 3; a cutting device 3, the cutting device 3 being provided at the eighth station 108; the forming mechanisms can be driven by driving units such as an air cylinder, an electric cylinder, a motor and the like; the transmission of each forming mechanism can be realized by adopting a link mechanism, a gear mechanism, a cam mechanism and the like.
The heating device 1 is provided with an automatic control ignition assembly and a pneumatic valve for controlling the flow rate of gas and opening and closing; the heating device 1 is connected with the output end of the rotary cylinder, and the rotary cylinder drives and adjusts the position of a combustion port of the heating device 1.
The first taper forming die tool 4, the second taper forming die tool 5 and the third taper forming die tool 6 all comprise two taper forming extrusion heads, the number of the extrusion heads can be adjusted according to the taper forming process, and the cylinder control connecting rod mechanism is used for realizing the action of each set of taper forming die; the two conical mouth forming extrusion heads can be controlled to move by a single air cylinder or can be controlled by two air cylinders independently.
Referring to FIG. 1, the center of the first station 101 is provided with an ejector pin device 8, and the ejector pin device 8 can be used to fix the length, center, etc. of the glass tube 12, and can be raised and lowered by an air cylinder.
Example two
In addition to the first embodiment, referring to fig. 1, the glass tube clamping mechanism 9, the heating device 1, the glass tube taper preforming device 2 and the cutting device 3 are mounted upside down on the table of the worktable 11.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the invention also provides a forming method of the glass tube bottle-making taper opening, which comprises the following steps:
firstly, fixing the length of a glass tube 12 concentric with a third station 103 through an ejector pin device 8; then the rotary cylinder controls the heating device 1 to rotate to align the combustion port with the glass tube 12, the pneumatic valve controls the gas inflow and the flow rate, and the glass tube 12 is heated after automatic ignition, so that the glass tube 12 is heated and softened at high temperature;
step two, after the glass tube 12 is softened, the pneumatic valve is closed, heating is stopped, and the heating device 1 returns to the original position under the action of the air cylinder;
performing the softened taper of the glass tube 12 by the glass tube taper performing device 2 under the action of the cylinder, and returning to the original position after finishing;
after the heating device 1 repeats the heating action to heat the glass tube 12 again, the thimble device 8 lifts up under the action of the cylinder to insert the thimble into the taper mouth of the glass tube 12, the cylinder controls the first taper mouth forming die tool 4 to form the taper mouth of the heated glass tube 12, and after the process, the cylinder respectively controls the first taper mouth forming die tool 4 and the thimble device 8 to return to the original positions;
step five, the heating device 1 heats the glass tube 12 again, after heating, the second taper forming die tool 5 and the thimble device 8 form the taper of the glass tube 12 again, after forming, the heating device 1 repeats heating action to heat the glass tube 12 again, and similarly, the third taper forming die tool 6 and the thimble device 8 form the taper of the glass tube 12 finally;
and step six, after the taper forming is finished, the cylinder controls the cut mark device 7 to cut a shallow transverse line on the upper part of the taper of the glass tube 12, then the cut mark part is cut off by the cutting device 3, and the glass tube 12 which is cut off and is finished with the taper forming is transferred to the next process.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A glass tube bottle-making taper mouth forming device comprises a workbench (11); it is characterized by also comprising:
the working area comprises a first station area, a second station area and a third station area which are arranged on the workbench (11);
wherein the first station area comprises a first station (101) which is arranged at the center of the workbench (11) and is used for forming the taper of the glass tube (12), a second station (102) which is arranged in sequence and is used for heating the glass tube (12), and a third station (103) which is used for preforming the taper of the glass tube (12);
the second station area comprises a pair of fourth stations (104), a pair of fifth stations (105) and a plurality of pairs of sixth stations (106) which are symmetrically arranged;
wherein the third station area comprises a seventh station (107) and an eighth station (108);
the glass tube clamping mechanism (9), the glass tube clamping mechanism (9) is coaxially arranged above the first station (101), and clamps the glass tube (12) to operate at a high speed;
a heating device (1), the heating device (1) being arranged at a second station (102);
the glass tube taper mouth preforming device (2), wherein the glass tube taper mouth preforming device (2) is arranged at the third station (103);
the device comprises a taper forming die tooling assembly, a first guide rail, a second guide rail and a third guide rail, wherein the taper forming die tooling assembly comprises a first taper forming die tooling (4), a second taper forming die tooling (5) and a third taper forming die tooling (6) which are respectively arranged at a fourth station (104), a fifth station (105) and a sixth station (106);
the cutting mark device (7), the cutting mark device (7) is arranged at the seventh station (107);
a severing device (3), said severing device (3) being arranged at an eighth station (108).
2. A glass tube neck finish forming device as claimed in claim 1, wherein the heating device (1) is provided with an automatic ignition control assembly and a pneumatic valve for controlling the flow rate and opening and closing of gas.
3. The forming device for the glass tube-made bottle cone mouth is characterized in that the heating device (1) is connected with the output end of a rotary cylinder, and the rotary cylinder drives and adjusts the position of a combustion port of the heating device (1).
4. The glass tube bottle making taper forming device according to claim 1, wherein the first taper forming die tooling (4), the second taper forming die tooling (5) and the third taper forming die tooling (6) comprise two taper forming extrusion heads.
5. A glass tube making machine according to claim 1, characterized in that said first station (101) is centrally equipped with ejector means (8).
6. The glass tube bottleneck forming device according to claim 1, wherein the glass tube clamping mechanism (9), the heating device (1), the glass tube bottleneck preforming device (2) and the cutting device (3) are arranged upside down under the surface of the workbench (11).
7. A method of forming a glass-tube-type bottle neck finish according to any one of claims 1 to 6, comprising the steps of:
step one, a rotary cylinder controls a heating device (1) to rotate to align a combustion port with a glass tube (12), so that the glass tube (12) is heated and softened at high temperature;
secondly, after the glass tube (12) is softened, closing the pneumatic valve, stopping heating, and returning the heating device (1) to the original position under the action of the cylinder;
performing the cone mouth of the softened glass tube (12) by the glass tube cone mouth performing device (2) under the action of the air cylinder, and returning to the original position after finishing;
after the heating device (1) repeats the heating action to heat the glass tube (12) again, the thimble device (8) lifts under the action of the cylinder to insert a thimble into the taper mouth of the glass tube (12), the cylinder controls the first taper mouth forming die tool (4) to form the taper mouth of the heated glass tube (12), and after the forming is finished, the cylinder respectively controls the first taper mouth forming die tool (4) and the thimble device (8) to return to the original positions;
step five, the heating device (1) heats the glass tube (12) again, after heating, the second cone mouth forming die tool (5) and the thimble device (8) form the cone mouth of the glass tube (12) again, after forming, the heating device (1) repeats heating action to heat the glass tube (12), and similarly, the third cone mouth forming die tool (6) and the thimble device (8) form the cone mouth of the glass tube (12) finally;
and step six, after the conical opening forming is finished, the cylinder controls the cutting mark device (7) to cut a shallow transverse line on the upper part of the conical opening of the glass tube (12), then the cutting mark part is cut off through the cutting device (3), and the glass tube (12) which is cut off and is finished with the conical opening forming is transferred to the next procedure.
8. The method as claimed in claim 7, further comprising the following steps before the step one: and (3) fixing the length of the glass tube (12) concentric with the third station (103) through the ejector pin device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688264.5A CN115057617B (en) | 2022-06-16 | 2022-06-16 | Device and method for forming tapered mouth of glass tube bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688264.5A CN115057617B (en) | 2022-06-16 | 2022-06-16 | Device and method for forming tapered mouth of glass tube bottle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115057617A true CN115057617A (en) | 2022-09-16 |
| CN115057617B CN115057617B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210688264.5A Active CN115057617B (en) | 2022-06-16 | 2022-06-16 | Device and method for forming tapered mouth of glass tube bottle |
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| Country | Link |
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| CN (1) | CN115057617B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB694089A (en) * | 1952-02-27 | 1953-07-15 | Hughes Murray Inc | Method and machine for manufacturing ampoules |
| WO2004057647A1 (en) * | 2002-12-21 | 2004-07-08 | Ick-Soo Choi | Method and system for manufacturing bulb |
| CN108423975A (en) * | 2018-04-26 | 2018-08-21 | 江苏嘉佳药用玻璃制品有限公司 | Base angle pipe-produced glass bottle bottle-making machine and its base angle pipe-produced glass bottle manufacturing method |
| CN208200737U (en) * | 2018-04-26 | 2018-12-07 | 江苏嘉佳药用玻璃制品有限公司 | Base angle pipe-produced glass bottle bottle-making machine |
| CN110482848A (en) * | 2019-09-27 | 2019-11-22 | 济南晶焱自动化科技有限公司 | Full-automatic glass back cover blows tire all-in-one machine and its blows tire method |
| CN213113058U (en) * | 2020-09-22 | 2021-05-04 | 重庆辉照光电科技有限公司 | Bulb forming device |
-
2022
- 2022-06-16 CN CN202210688264.5A patent/CN115057617B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB694089A (en) * | 1952-02-27 | 1953-07-15 | Hughes Murray Inc | Method and machine for manufacturing ampoules |
| WO2004057647A1 (en) * | 2002-12-21 | 2004-07-08 | Ick-Soo Choi | Method and system for manufacturing bulb |
| CN108423975A (en) * | 2018-04-26 | 2018-08-21 | 江苏嘉佳药用玻璃制品有限公司 | Base angle pipe-produced glass bottle bottle-making machine and its base angle pipe-produced glass bottle manufacturing method |
| CN208200737U (en) * | 2018-04-26 | 2018-12-07 | 江苏嘉佳药用玻璃制品有限公司 | Base angle pipe-produced glass bottle bottle-making machine |
| CN110482848A (en) * | 2019-09-27 | 2019-11-22 | 济南晶焱自动化科技有限公司 | Full-automatic glass back cover blows tire all-in-one machine and its blows tire method |
| CN213113058U (en) * | 2020-09-22 | 2021-05-04 | 重庆辉照光电科技有限公司 | Bulb forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115057617B (en) | 2023-09-12 |
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Effective date of registration: 20220915 Address after: No.1047 Tushan Road, Bengbu City, Anhui Province 233000 Applicant after: China Building Materials Glass New Materials Research Institute Group Co.,Ltd. Applicant after: HEFEI ZHONGCHEN LIGHT INDUSTRIAL MACHINERY Co.,Ltd. Address before: 230000 No.206 Jinxiu Avenue, Hefei Economic and Technological Development Zone, Anhui Province Applicant before: HEFEI ZHONGCHEN LIGHT INDUSTRIAL MACHINERY Co.,Ltd. |
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