CN110922046A - Automatic cooling system and cooling method for optical fiber preform - Google Patents

Automatic cooling system and cooling method for optical fiber preform Download PDF

Info

Publication number
CN110922046A
CN110922046A CN201911055889.2A CN201911055889A CN110922046A CN 110922046 A CN110922046 A CN 110922046A CN 201911055889 A CN201911055889 A CN 201911055889A CN 110922046 A CN110922046 A CN 110922046A
Authority
CN
China
Prior art keywords
cooling
optical fiber
fiber preform
rotating
transfer robot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911055889.2A
Other languages
Chinese (zh)
Inventor
林勇
李凡
眭立洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Yongding Optical Fiber Technology Co Ltd
Jiangsu Etern Co Ltd
Original Assignee
Jiangsu Yongding Optical Fiber Technology Co Ltd
Jiangsu Etern Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Yongding Optical Fiber Technology Co Ltd, Jiangsu Etern Co Ltd filed Critical Jiangsu Yongding Optical Fiber Technology Co Ltd
Priority to CN201911055889.2A priority Critical patent/CN110922046A/en
Publication of CN110922046A publication Critical patent/CN110922046A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/012Manufacture of preforms for drawing fibres or filaments
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Abstract

The application relates to an optical fiber perform automatic cooling system, including the rotatory cooling module that has carousel and cooling stores pylon, a plurality of the cooling stores pylon is evenly fixed the carousel outer fringe still includes rotating turret, delivery arm and transports the robot, the rotating turret has first pivoted position and second pivoted position, the delivery arm be used for with optical fiber perform fortune extremely first pivoted position or transport first pivoted position, transport the robot be used for with optical fiber perform by second pivoted position transport extremely cooling stores pylon or by the cooling stores pylon transports extremely the second pivoted position. The invention effectively improves the cooling efficiency of the optical fiber perform rod by using ingenious design and automatic equipment, avoids the possible injury to human bodies due to high temperature of the finished rod, reduces the occurrence of safety accidents, reduces the investment of manpower and a trolley, reduces the production cost, greatly improves the production efficiency and ensures that the cooling process of the optical fiber perform rod realizes high automation and intellectualization.

Description

Automatic cooling system and cooling method for optical fiber preform
Technical Field
The application belongs to the field of optical fiber manufacturing, and particularly relates to an automatic cooling system and a cooling method for an optical fiber preform.
Background
During the manufacture of optical fiber preforms, the sintered, annealed or tipped finished preform needs to be cooled. During cooling, an operator pushes the prefabricated rod to be cooled (about 100-200 ℃) to a corresponding simple cooling hanging position and hangs the prefabricated rod for cooling. There are some problem defects in this case, such as: the risk of scalding due to high temperature exists when an operator enters a cooling area; the cart required to be transported and the required manpower investment are more; the cooling rods cannot be accurately identified to be cooled well, the cooling rods still need to be cooled again, the number of waiting works cannot be accurately counted, and the like, so that the production efficiency is low. In order to avoid personal injury, reduce the occurrence of safety accidents, improve the production efficiency, reduce the investment of manpower and corresponding transfer equipment and meet the urgent need of the industry for highly automated and intelligent related method equipment.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the automatic cooling system and the cooling method for the optical fiber perform rod are highly automatic and intelligent, and are used for solving the defects of cooling efficiency and safety of the cooling method and the cooling system for the optical fiber perform rod in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an optical fiber perform automatic cooling system, is including the rotatory cooling module that has carousel and cooling stores pylon, a plurality of the cooling stores pylon is evenly fixed the carousel outer fringe still includes rotating turret, transport arm and transports robot, the rotating turret has first pivoted position and second pivoted position, transport arm be used for with optical fiber perform fortune extremely first pivoted position or transport first pivoted position, transport robot be used for with optical fiber perform by second pivoted position transport extremely cooling stores pylon or by cooling stores pylon transport extremely the second pivoted position.
In one embodiment, the robot further comprises an inquiry control assembly, wherein the inquiry control assembly comprises a processor, a memory, a signal receiver and a signal transmitter, and the processor controls the actions of the rotating frame, the conveying arm and the transfer robot through control signals sent by the signal transmitter.
In one embodiment, the memory stores motion rules of the turret, the transfer arm and the transfer robot, and the processor sends corresponding control signals according to the motion rules.
In one embodiment, the transfer robot is provided with a position sensor, the signal receiver receives a transfer robot position signal sent by the position sensor, and the processor sends a corresponding control signal according to the position signal.
In one embodiment, the polling control assembly includes an operation panel, an identification card is fixed on the optical fiber preform, the identification card records ID information of the optical fiber preform, the signal receiver and the memory receive and store the ID information in the identification card, and the operation panel can view the ID information in the memory.
In one embodiment, at least 2 of the rotary cooling assemblies are included, spaced apart from one another.
In one embodiment, the rotary cooling assembly comprises at least 3 cooling racks.
In one embodiment, the transfer arm and the transfer robot are provided with grippers for gripping and releasing the optical fiber preform.
In one embodiment, the cooling system further comprises a fence, wherein the rotary cooling assembly and the transfer robot are enclosed inside the fence, and the second rotating position and the first rotating position are respectively located inside and outside the fence.
A cooling method of an automatic cooling system for an optical fiber preform as described in any one of the above, comprising the steps of:
step 10, the conveying arm conveys the optical fiber preform to be cooled to the first rotating position;
step 20, the rotating frame rotates and conveys the optical fiber preform rod from the first rotating position to the second rotating position;
step 30, the transfer robot conveys the optical fiber preform to the cooling rack from the second rotating position for cooling;
step 40, after the cooling is finished, the transfer robot conveys the optical fiber preform to the second rotating position from the cooling rack;
step 50, the rotating frame rotates and conveys the optical fiber preform rod from the second rotating position to the first rotating position;
and step 60, the conveying arm conveys the optical fiber preform to be cooled out of the first rotating position.
The invention has the beneficial effects that: the invention effectively improves the cooling efficiency of the optical fiber perform rod by using ingenious design and automatic equipment, avoids the possible injury to human bodies due to high temperature of the finished rod, reduces the occurrence of safety accidents, reduces the investment of manpower and a trolley, reduces the production cost, can accurately identify the information, the position and the cooling time of the rod by using a system, greatly improves the production efficiency and ensures that the cooling process of the optical fiber perform rod realizes high automation and intellectualization.
Drawings
The technical solution of the present application is further explained below with reference to the drawings and the embodiments.
FIG. 1 is a schematic view of an automatic cooling system for an optical fiber preform according to an embodiment of the present application;
fig. 2 is a flowchart illustrating a cooling method of an automatic cooling system for an optical fiber preform according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, an automatic cooling system for an optical fiber perform includes a rotary cooling assembly having a rotary table 1 and a cooling rack 2, wherein the cooling racks 2 are uniformly fixed on the outer edge of the rotary table 1, the optical fiber perform can be hung on the cooling rack 2 for cooling, and the rotary table 1 rotates to drive the cooling rack 2 to rotate, so that the position of any optical fiber perform on the rotary cooling assembly can be adjusted, and the optical fiber perform can be conveniently detached and transported. The automatic cooling system of optical fiber perform of this embodiment still includes rotating turret 4, delivery arm and transfer robot 5, and rotating turret 4 has first rotational position and second rotational position, and the delivery arm is used for transporting optical fiber perform to first rotational position or transport first rotational position out, and transfer robot 5 is used for transporting optical fiber perform to cooling stores pylon 2 or transporting to the second rotational position by cooling stores pylon 2 by the second rotational position. The rotating frame 4 is a frame body capable of carrying the optical fiber perform rod, the frame body comprises a bearing area or a clamping structure used for carrying the optical fiber perform rod, the bearing area or the clamping structure rotates when the rotating frame 4 rotates, and two different first rotating positions and second rotating positions exist.
In order to realize the position transfer function of the optical fiber preform, in one embodiment, the carrying regions or the holding structures have a pair, wherein each carrying region or holding structure is located at the first rotation position or the second rotation position at the same time.
The first rotation position and the second rotation position are respectively arranged, so that the transportation motion space of the transfer robot 5 can be controlled within a certain range. Because the existing self-moving robot depends on certain space recognition and memory capacity to do planning movement, the movement range is limited. The first rotating position and the second rotating position are respectively positioned at two sides of the movement space boundary of the transfer robot 5, so that the movement rule is designed conveniently, the automatic transfer function of the transfer robot 5 is realized, and the cooling efficiency of the cooling system is improved.
In one embodiment, the robot further comprises an inquiry control assembly, which comprises a processor, a memory, a signal receiver and a signal transmitter, wherein the processor controls the action of the rotating frame 4, the conveying arm and the transfer robot 5 through control signals sent by the signal transmitter. In one embodiment, the memory stores the motion rules of the turret 4, the transfer arm and the transfer robot 5, and the processor sends corresponding control signals according to the motion rules. Specifically, the action rules include rules for controlling the rotation of the turret 4, and transporting the optical fiber preform by the transport arm and the transfer robot 5, such as a rotation angle (typically 180 °) of the turret 4, a rotation angle and a delivery distance of the transport arm, a traveling route of the transfer robot 5, and the like. In one embodiment, the transfer robot 5 is provided with a position sensor, the signal receiver receives a position signal of the transfer robot 5 sent by the position sensor, and the processor sends a corresponding control signal according to the position signal.
In order to facilitate the understanding of the information of the optical fiber preform, the operation and the control of the cooling progress, in one embodiment, the query control assembly comprises an operation screen, an identification card is fixed on the optical fiber preform, the identification card records the ID information of the optical fiber preform, the signal receiver and the memory receive and store the ID information in the identification card, and the ID information in the memory can be viewed by the operation screen.
To improve cooling efficiency, in one embodiment, at least 2 rotating cooling assemblies are included, spaced apart from one another. In one embodiment, there are 3 rotary cooling modules, and the transfer robot 5 transfers between the rotary cooling modules or between the rotary cooling modules and the turret 4.
In order to improve the cooling efficiency, in one embodiment, the rotary cooling module comprises at least 3 cooling racks 2, i.e. the same rotary cooling module can cool at least 3 optical fiber preforms at the same time. In one of the embodiments, the rotary cooling assembly comprises 11 cooling racks 2.
In one embodiment, the transfer arm and transfer robot 5 is provided with a gripper for gripping and releasing the optical fiber preform, for gripping and releasing the optical fiber preform.
In order to realize the self-movement of the transfer robot 5, improve the safety of the cooling system and limit the movement range of the transfer robot 5, in one embodiment, the optical fiber cooling system further comprises a fence 3, the rotary cooling assembly and the transfer robot 5 are enclosed inside the fence 3, the second rotating position and the first rotating position are respectively located inside and outside the fence, and the optical fiber preform to be cooled is transported into or out of the fence 3 through the rotating frame 4. The fence 3 can only serve as a collision obstacle to prevent the robot 5 from deviating and serve as a physical modifier of a movement path. The fence 3 can be further provided with a mark assembly for feedback positioning after the transfer robot 5 emits laser or ultrasonic waves to the mark assembly, or the mark assembly is shot by an image sensor for positioning.
In different embodiments, the transport arm may be replaced by a cart or the like.
When the optical fiber preform needs to be cooled: hanging the optical fiber preform to be cooled to a first rotating position by a cart or a conveying arm, scanning information such as the ID of the preform to an inquiry control component, and retrieving and recording corresponding information by the inquiry control component; the query control assembly sends a related instruction to the transfer robot 5 and the rotating frame 4, wherein the rotating frame 4 transfers the optical fiber preform to the second rotating position from the first rotating position, the transfer robot 5 clamps the preform from the second rotating position and places the preform on the cooling hanger 2, and specifically, which cooling hanger 2 can be automatically specified by the query control assembly according to the corresponding optical fiber preform ID and the set rule. This inquiry control assembly can inquire about the prefabricated stick ID in cooling zone, quantity, hangs a plurality of information such as position (cooling stores pylon 2 positions), cooling start time, finish time, and then can set up the optical fiber prefabricated stick that accomplishes to the cooling and have automatic prompt facility. After cooling is completed: after an operator clicks a corresponding ID taking-out command of the query control assembly, the robot automatically identifies the corresponding ID and the hanging position and then moves the optical fiber perform to a second rotating position, and the optical fiber perform at the second rotating position is rotated to the first rotating position and then is moved out of the system or moved to the next procedure by a trolley or a conveying arm.
Referring to fig. 2, an embodiment of the present invention further relates to a cooling method using the above automatic cooling system for an optical fiber preform, the method including the following steps:
step 10(S10), the transport arm transports the optical fiber preform to be cooled to a first rotational position;
step 20(S20) of the turret 4 carrying the optical fiber preform rod from the first rotational position to the second rotational position;
step 30(S30), the transfer robot 5 transports the optical fiber preform from the second rotational position to the cooling rack 2 for cooling;
step 40(S40), after the cooling is completed, the transfer robot 5 transports the optical fiber preform from the cooling rack 2 to a second rotational position;
step 50(S50), the turret 4 rotates and conveys the optical fiber preform from the second rotational position to the first rotational position;
step 60(S60), the transport arm carries the optical fiber preform to be cooled out of the first rotational position.
The invention has the beneficial effects that: the invention effectively improves the cooling efficiency of the optical fiber perform rod by using ingenious design and automatic equipment, avoids the possible injury to human bodies due to high temperature of the finished rod, reduces the occurrence of safety accidents, reduces the investment of manpower and a trolley, reduces the production cost, can accurately identify the information, the position and the cooling time of the rod by using a system, greatly improves the production efficiency and ensures that the cooling process of the optical fiber perform rod realizes high automation and intellectualization.
In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides an optical fiber perform automatic cooling system which characterized in that, is including the rotatory cooling module that has carousel and cooling stores pylon, a plurality of the cooling stores pylon is evenly fixed the carousel outer fringe still includes rotating turret, delivery arm and transports the robot, the rotating turret has first pivoted position and second pivoted position, the delivery arm be used for with optical fiber perform fortune to first pivoted position or transport first pivoted position, transport the robot be used for with optical fiber perform by second pivoted position transport to the cooling stores pylon or by the cooling stores pylon transport to the second pivoted position.
2. The system of claim 1, further comprising an interrogation control assembly including a processor, a memory, a signal receiver and a signal transmitter, wherein the processor controls the turret, the transfer arm and the transfer robot via control signals from the signal transmitter.
3. The system for automatically cooling an optical fiber preform according to claim 2, wherein the memory stores motion rules of the turret, the transfer arm and the transfer robot, and the processor transmits corresponding control signals according to the motion rules.
4. The system for automatically cooling an optical fiber preform according to claim 3, wherein the transfer robot is provided with a position sensor, the signal receiver receives a position signal of the transfer robot from the position sensor, and the processor sends out a corresponding control signal according to the position signal.
5. The system according to claim 2, wherein the polling control unit includes a screen, the optical fiber preform having an identification card fixed thereto, the identification card recording ID information of the optical fiber preform, the signal receiver and the memory receiving and storing the ID information in the identification card, and the screen being capable of viewing the ID information in the memory.
6. The system for automatically cooling an optical fiber preform according to claim 1, comprising at least 2 of the rotary cooling modules disposed at a distance from each other.
7. The system for automatically cooling an optical fiber preform according to claim 1, wherein the rotary cooling assembly comprises at least 3 cooling racks.
8. The system for automatically cooling an optical fiber preform according to claim 1, wherein the transfer arm and the transfer robot are provided with grippers for gripping and releasing the optical fiber preform.
9. The system for automatically cooling an optical fiber preform according to claim 1, further comprising an enclosure, wherein the rotary cooling module and the transfer robot are enclosed inside the enclosure, and the second rotational position and the first rotational position are respectively located inside and outside the enclosure.
10. A method for cooling an automatic cooling system for an optical fiber preform according to any one of claims 1 to 9, comprising the steps of:
step 10, the conveying arm conveys the optical fiber preform to be cooled to the first rotating position;
step 20, the rotating frame rotates and conveys the optical fiber preform rod from the first rotating position to the second rotating position;
step 30, the transfer robot conveys the optical fiber preform to the cooling rack from the second rotating position for cooling;
step 40, after the cooling is finished, the transfer robot conveys the optical fiber preform to the second rotating position from the cooling rack;
step 50, the rotating frame rotates and conveys the optical fiber preform rod from the second rotating position to the first rotating position;
and step 60, the conveying arm conveys the optical fiber preform to be cooled out of the first rotating position.
CN201911055889.2A 2019-10-31 2019-10-31 Automatic cooling system and cooling method for optical fiber preform Pending CN110922046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911055889.2A CN110922046A (en) 2019-10-31 2019-10-31 Automatic cooling system and cooling method for optical fiber preform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911055889.2A CN110922046A (en) 2019-10-31 2019-10-31 Automatic cooling system and cooling method for optical fiber preform

Publications (1)

Publication Number Publication Date
CN110922046A true CN110922046A (en) 2020-03-27

Family

ID=69850108

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911055889.2A Pending CN110922046A (en) 2019-10-31 2019-10-31 Automatic cooling system and cooling method for optical fiber preform

Country Status (1)

Country Link
CN (1) CN110922046A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114163120A (en) * 2021-12-10 2022-03-11 华能(泰安)光电科技有限公司 Cooling device for optical fiber perform

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002249332A (en) * 2001-02-20 2002-09-06 Mitsubishi Cable Ind Ltd Apparatus for producing optical fiber preform and method for producing the same
CN202849257U (en) * 2012-08-27 2013-04-03 浙江富通光纤技术有限公司 Rod suspension rack of fiber prefabricated rod
CN108438094A (en) * 2018-03-16 2018-08-24 烽火通信科技股份有限公司 AGV types loading and unloading mobile industrial robot and preform production system
CN209445703U (en) * 2018-11-01 2019-09-27 藤仓烽火光电材料科技有限公司 The cooling device of preform
CN211570473U (en) * 2019-10-31 2020-09-25 江苏永鼎光纤科技有限公司 Optical fiber perform automatic cooling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002249332A (en) * 2001-02-20 2002-09-06 Mitsubishi Cable Ind Ltd Apparatus for producing optical fiber preform and method for producing the same
CN202849257U (en) * 2012-08-27 2013-04-03 浙江富通光纤技术有限公司 Rod suspension rack of fiber prefabricated rod
CN108438094A (en) * 2018-03-16 2018-08-24 烽火通信科技股份有限公司 AGV types loading and unloading mobile industrial robot and preform production system
CN209445703U (en) * 2018-11-01 2019-09-27 藤仓烽火光电材料科技有限公司 The cooling device of preform
CN211570473U (en) * 2019-10-31 2020-09-25 江苏永鼎光纤科技有限公司 Optical fiber perform automatic cooling system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114163120A (en) * 2021-12-10 2022-03-11 华能(泰安)光电科技有限公司 Cooling device for optical fiber perform

Similar Documents

Publication Publication Date Title
CN111348361A (en) Goods taking and placing control method and device, conveying device and conveying robot
US20210395014A1 (en) Handling robot, material fetching method, material replenishing or returning method, intelligent warehousing system
CN107032031B (en) Automatic shipment system in warehouse
CN106379681A (en) Intelligent warehousing robot, system and system control method
CN109264283A (en) Sorting system and container method for sorting
CN210883786U (en) Transfer robot
CN107428466A (en) System and method for for overhead storage
CN211732699U (en) Carrying device and carrying robot with same
KR20110135121A (en) System for automatic praying and method for the same
CN210794517U (en) Transfer robot
JPH0428700A (en) Progam-controlled device for handling and transferring case, container or the like
CN216835493U (en) Storage scheduling system
CN107032033A (en) The intensive storage method of goods smart three-dimensional and intelligent intensive stereo garage system
CN211570473U (en) Optical fiber perform automatic cooling system
US10642165B2 (en) Automated mask storage and retrieval system
CN116648414A (en) Picking system and method
CN110922046A (en) Automatic cooling system and cooling method for optical fiber preform
CN107215602A (en) A kind of intelligentized blood red blood cell freezer deposits hair system automatically
CN112651694A (en) Intelligent management system and intelligent management method for warehouse goods
US20220219902A1 (en) Control method for goods retrievement and storage, apparatus, carrying apparatus, and transport robot
CN110127264A (en) Pipe fitting stores 3 D stereo warehouse
CN111598514A (en) Intelligent warehouse management system and method based on Internet of things technology
TWI754914B (en) Horizontal picking device for automatic storage system
CN108994816A (en) A kind of robot of supermarket
JP2021509881A (en) Parcel identification device and parcel sorting device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200327

RJ01 Rejection of invention patent application after publication