CN111587065B - Method for accurately tracing single piece flow of drilling workshop based on PCB industry - Google Patents
Method for accurately tracing single piece flow of drilling workshop based on PCB industry Download PDFInfo
- Publication number
- CN111587065B CN111587065B CN202010460510.2A CN202010460510A CN111587065B CN 111587065 B CN111587065 B CN 111587065B CN 202010460510 A CN202010460510 A CN 202010460510A CN 111587065 B CN111587065 B CN 111587065B
- Authority
- CN
- China
- Prior art keywords
- drilling
- code
- automatic
- plate
- workshop
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/084—Product tracking, e.g. of substrates during the manufacturing process; Component traceability
Landscapes
- Engineering & Computer Science (AREA)
- Operations Research (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Drilling And Boring (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a method for accurately tracing a single piece flow of a drilling workshop based on the PCB industry, which comprises a cutting step and a drilling step, wherein the cutting step comprises bottom plate cutting and aluminum sheet cutting; the drilling step comprises a line side bin, a temporary storage area, a manual upper plate, drilling, a manual lower plate, a plate feeding and grinding line, automatic upper plate, two-dimensional code reading, clear code identification, flash polishing, water washing, hole inspection and automatic plate collection. The invention does not change the working mode of the existing drilling workshop, does not influence the production efficiency of the drilling workshop, has lower overall investment and realizes the accurate tracing of a single product in the drilling workshop without manual extra intervention.
Description
Technical Field
The invention relates to a method for accurately tracing a single flow of a drilling workshop based on the PCB industry.
Background
Currently, with the gradual popularization and popularity of intelligent manufacturing and informatization in the PCB industry, a part of PCB factories begin to implement MES systems or full-flow tracing systems. Because the production flow of the PCB is long, dozens of large procedures and dozens to hundreds of small procedures are performed in the middle, the PCB single-piece tracing scheme is gradually promoted by the leading factories of a part of the real industries. The drilling workshop is used as a major key process in the PCB production process, and due to the specific production mode, the existing single piece tracing scheme cannot be really executed on the ground in the drilling workshop.
Example 1 of the prior art
Before the PCB board is up-drilled, each block is scanned by the PDA. This solution is technically feasible, but in practice it can seriously affect the production efficiency and yield of the drilling shop. Firstly, the staff is required to scan each plate, and the existing working mode and working efficiency of the staff are seriously influenced; secondly, because the two-dimensional code difference of PCB board and the two-dimensional code that ordinary label paper printed, so can be more difficult on discerning, cause PDA can't the quick accurate discernment two-dimensional code, can seriously influence production efficiency equally. In conclusion, the scheme has serious influence on efficiency and cannot be really carried out on the ground.
The existing defects are as follows: the efficiency is seriously influenced, the operation is very complicated, omission is easy, and the implementation is difficult.
Example 2 of the prior art
Binding the PCB in advance before the drilling machine is installed, and spray-printing a bar code; and the machining is to scan the jet printing code. This approach is also attempted to be pursued in some PCB enterprises, but the effect and solution are not very different. Firstly, binding in advance is needed, which is equivalent to that the binding work of the upper plate of the drilling machine is preposed to a material preparation stage, and the workload cannot be reduced; in addition, code spraying equipment is added, the bound PCB is associated with code spraying, and the temporary two-dimensional code is sprayed on the aluminum sheet; when the drilling machine is used, the two-dimensional code is scanned and printed to be bound with the machine table or the shaft number, and therefore complete tracing is achieved. The scheme needs to be additionally input into code spraying equipment, but has serious influence on the efficiency of material preparation, and meanwhile, the offline material preparation (encapsulation and printing of pins) is only suitable for double-sided boards or boards with fewer layers and is not suitable for multilayer boards.
The existing defects are as follows: the efficiency is seriously influenced, the operation is complex, the limitation is large, omission is easy, and the implementation is difficult.
Disclosure of Invention
The invention aims to solve the technical problem that the method for accurately tracing the single piece flow of the drilling workshop based on the PCB industry does not change the working mode of the existing drilling workshop, does not influence the production efficiency of the drilling workshop, has low overall investment and realizes the accurate tracing of the single piece product of the drilling workshop without additional manual intervention.
The invention is realized by the following technical scheme: a method for accurately tracing a single piece flow of a drilling workshop based on the PCB industry comprises a cutting step and a drilling step, wherein the cutting step comprises base plate cutting and aluminum sheet cutting;
the drilling step comprises a line side bin, a temporary storage area, a manual upper plate, drilling, a manual lower plate, a plate feeding and grinding line, automatic upper plate, two-dimensional code reading, clear code identification, flash polishing, water washing, hole inspection and automatic plate collection.
As a preferred technical solution, the reading of the two-dimensional code specifically includes: and erecting an automatic code reader, reading the PANEL two-dimensional code and storing the PANEL two-dimensional code into the system.
As a preferred technical solution, the plain code identification specifically includes: erecting a clear code identification CCD and an identification system, identifying the clear code and uploading the information to an MES system.
As a preferred technical scheme, the uploading of the hole inspection data specifically comprises: and reading the two-dimensional code, and uploading the hole inspection data to the MES system.
As the preferred technical scheme, the hole inspection step adopts a hole inspection machine to inspect holes.
As a preferred technical scheme, the automatic plate feeding machine is adopted for automatic plate feeding, and the automatic plate collecting machine is adopted for automatic plate discharging.
As the preferred technical scheme, the step of reading the two-dimensional code adopts an automatic code reader, and the collection of the two-dimensional code is respectively arranged between the automatic feeding plate and the polishing burr and on the hole inspection machine.
As a preferable technical scheme, if the two-dimension code information can be simultaneously identified in the clear code identification process, the automatic code reader in the front can be cancelled, and the clear code identification system can upload the data to the MES system after identifying the two-dimension code and the clear code information.
The invention has the beneficial effects that: 1. the problem that the tracing of the single flow of the existing PCB drilling workshop cannot be performed on the ground is solved, and PCB manufacturing enterprises are helped to really realize the tracing of the single flow of the drilling workshop;
2. the efficiency of a drilling workshop is not influenced, and single piece flow tracing is realized through automation and informatization;
3. the scheme has low overall cost and high benefit;
4. the accurate tracing of the drilling workshop is that the whole flow tracing of the single PCB flow is realized, and the core competitiveness and the customer satisfaction of customers are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the present invention;
fig. 2 is an explanatory diagram of the drilling specification of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the method for accurately tracing the flow of a single piece in a drilling workshop based on the PCB industry comprises a cutting step and a drilling step, wherein the cutting step comprises cutting a base plate and cutting an aluminum sheet;
the drilling step comprises a line side bin, a temporary storage area, a manual upper plate, drilling, a manual lower plate, a plate feeding and grinding line, automatic upper plate, two-dimensional code reading, clear code identification, flash polishing, water washing, hole inspection and automatic plate collection.
Wherein, reading the two-dimensional code specifically includes: erecting an automatic code reader, reading the PANEL two-dimensional code and storing the PANEL two-dimensional code into a system; the plain code identification specifically comprises: erecting a clear code identification CCD and an identification system, identifying the clear code and uploading the information to an MES system; the hole inspection data uploading specifically comprises the following steps: and reading the two-dimensional code, and uploading the hole inspection data to the MES system.
In this embodiment, the hole inspection step uses a hole inspection machine to inspect holes, the automatic plate feeding step uses an automatic plate feeding machine, and the automatic plate discharging step uses an automatic plate receiving machine.
Wherein, read the two-dimensional code step and adopt automatic code reader, the collection of two-dimensional code sets up respectively in automatic upper plate and polish and drape over one's shoulders between the cutting edge of a knife or a sword to and on the hole inspection machine.
The method comprises the following concrete steps:
modifying the engineering drill tape file, adding variables such as drilling date, drilling machine number, staff number and corresponding shaft number on the process side, and automatically drilling corresponding holes by the drilling machine after the system is set, as shown in figure 2.
The specific coding rules are suggested as follows:
and secondly, adding a two-dimensional code and a character recognition system on the board grinding line after drilling, and associating the two-dimensional code information read by the system with the drilling machine number, the shaft number and other information recognized by the character recognition system, so that the processing information of the single product in the drilling workshop can be traced. If the plain code recognition system can recognize the two-dimension code information at the same time, the automatic code reader in the front can be cancelled, and after the plain code recognition system recognizes the two-dimension code and the plain code information, the data is uploaded to an MES system, so that the tracking of the drilling information is realized.
The invention has the beneficial effects that: 1. the problem that the tracing of the single flow of the existing PCB drilling workshop cannot be performed on the ground is solved, and PCB manufacturing enterprises are helped to really realize the tracing of the single flow of the drilling workshop;
2. the efficiency of a drilling workshop is not influenced, and single piece flow tracing is realized through automation and informatization;
3. the scheme has low overall cost and high benefit;
4. the accurate tracing of the drilling workshop is that the whole flow tracing of the single PCB flow is realized, and the core competitiveness and the customer satisfaction of customers are improved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. A method for accurately tracing single piece flow based on a drilling workshop in the PCB industry is characterized by comprising the following steps: the method comprises a cutting step and a drilling step, wherein the cutting step comprises cutting of a base plate and cutting of an aluminum sheet;
the drilling step comprises a line side bin, a temporary storage area, a manual upper plate, drilling, a manual lower plate, a plate feeding and grinding line, an automatic upper plate, two-dimensional code reading, clear code identification, burr grinding, water washing, hole inspection and automatic plate collection;
the step of reading the two-dimensional code adopts an automatic code reader, and the collection of the two-dimensional code is respectively arranged between an automatic upper plate and a polishing burr and on a hole inspection machine; if the two-dimension code information can be identified simultaneously in the clear code identification process, the automatic code reader in the front can be cancelled, and the clear code identification system can upload the data to the MES system after identifying the two-dimension code and the clear code information.
2. The method for accurately tracing the flow of single parts based on the drilling workshop of the PCB industry as claimed in claim 1, wherein: the reading of the two-dimensional code specifically includes: and erecting an automatic code reader, reading the PANEL two-dimensional code and storing the PANEL two-dimensional code into the system.
3. The method for accurately tracing the flow of single parts based on the drilling workshop of the PCB industry as claimed in claim 1, wherein: the plain code identification specifically comprises: erecting a clear code identification CCD and an identification system, identifying the clear code and uploading the information to an MES system.
4. The method for accurately tracing the flow of single parts based on the drilling workshop of the PCB industry as claimed in claim 1, wherein: the hole inspection data uploading specifically comprises the following steps: and reading the two-dimensional code, and uploading the hole inspection data to the MES system.
5. The method for accurately tracing the flow of single parts based on the drilling workshop of the PCB industry as claimed in claim 1, wherein: and in the hole inspection step, a hole inspection machine is adopted for inspecting holes.
6. The method for accurately tracing the flow of single parts based on the drilling workshop of the PCB industry as claimed in claim 1, wherein: the automatic plate feeding device adopts an automatic plate feeding machine, and the automatic plate discharging device adopts an automatic plate collecting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460510.2A CN111587065B (en) | 2020-05-26 | 2020-05-26 | Method for accurately tracing single piece flow of drilling workshop based on PCB industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460510.2A CN111587065B (en) | 2020-05-26 | 2020-05-26 | Method for accurately tracing single piece flow of drilling workshop based on PCB industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111587065A CN111587065A (en) | 2020-08-25 |
| CN111587065B true CN111587065B (en) | 2022-02-15 |
Family
ID=72127048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010460510.2A Active CN111587065B (en) | 2020-05-26 | 2020-05-26 | Method for accurately tracing single piece flow of drilling workshop based on PCB industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111587065B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857225A (en) * | 2021-01-20 | 2021-05-28 | 苏州维嘉科技股份有限公司 | Quality monitoring method of drilling machine and monitoring device for optical detection equipment |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2513890A1 (en) * | 1975-03-27 | 1976-09-30 | Siemens Ag | Machine-readable coded circuit board - has bar-coded optically-readable paint strip along board edge |
| US5140745A (en) * | 1990-07-23 | 1992-08-25 | Mckenzie Jr Joseph A | Method for forming traces on side edges of printed circuit boards and devices formed thereby |
| CN103366208A (en) * | 2012-04-09 | 2013-10-23 | 迈智电脑股份有限公司 | Code marking system and product thereof |
| CN104299106A (en) * | 2014-11-03 | 2015-01-21 | 叶校然 | Product tracing inquiry system of PCB enterprise |
| CN104820849A (en) * | 2015-04-22 | 2015-08-05 | 上海凯思尔电子有限公司 | Traceability system suitable for PCB manufacturing |
| CN105196709A (en) * | 2015-10-19 | 2015-12-30 | 红板（江西）有限公司 | Laser code printing device for circuit boards |
| CN105291602A (en) * | 2015-11-11 | 2016-02-03 | 叶校然 | Method and equipment for recognizing bar codes of inner layers of circuit boards and printing codes on outer layers of circuit boards |
| CN106604551A (en) * | 2016-12-19 | 2017-04-26 | 深圳崇达多层线路板有限公司 | Circuit board production method through automatic pressing and profiling |
| CN107944517A (en) * | 2017-12-13 | 2018-04-20 | 广东正业科技股份有限公司 | A kind of product whole process quality retroactive method |
| CN107992917A (en) * | 2017-12-13 | 2018-05-04 | 广东正业科技股份有限公司 | A kind of quality retroactive method of efficient multi-layer PCB |
| CN108921265A (en) * | 2018-08-29 | 2018-11-30 | 东莞市国瓷新材料科技有限公司 | A kind of ceramic substrate and preparation method thereof with traceable function |
| CN109033917A (en) * | 2018-06-04 | 2018-12-18 | 广州美维电子有限公司 | A kind of information tracing method of pcb board and pcb board |
| CN208613803U (en) * | 2018-06-26 | 2019-03-19 | 雪龙数控设备(深圳)有限公司 | Wiring board traceability code drilling device |
| CN209028662U (en) * | 2018-08-10 | 2019-06-25 | 湖南莱塞智能装备有限公司 | A kind of full processing procedure system for tracing and managing of PCB |
| CN209532174U (en) * | 2019-01-25 | 2019-10-25 | 雪龙数控设备(深圳)有限公司 | The online traceability code drilling device of wiring board |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203455868U (en) * | 2013-07-16 | 2014-02-26 | 湖州南浔双林振森实木加工厂 | Floor false-proof system based on two-dimensional code |
| CN108012426B (en) * | 2017-12-13 | 2020-07-28 | 广东正业科技股份有限公司 | Quality tracing method for multilayer PCB |
| CN108156762B (en) * | 2018-02-23 | 2020-08-04 | 江西志浩电子科技有限公司 | PCB production method |
| CN109743841A (en) * | 2019-01-08 | 2019-05-10 | 博罗县鸿源华辉电子有限公司 | A kind of processing technology of the PCB substrate without burr |
| CN110062532A (en) * | 2019-04-02 | 2019-07-26 | 江门荣信电路板有限公司 | Automatically the clear dirt of burr is gone to verify integrated production system |
| CN209640908U (en) * | 2019-04-23 | 2019-11-15 | 深圳镭霆激光科技有限公司 | PCB manufactures whole process and traces identification code |
| CN110769614A (en) * | 2019-10-28 | 2020-02-07 | 厦门弘信电子科技股份有限公司 | FPC full-process tracing method with black cover film |
-
2020
- 2020-05-26 CN CN202010460510.2A patent/CN111587065B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2513890A1 (en) * | 1975-03-27 | 1976-09-30 | Siemens Ag | Machine-readable coded circuit board - has bar-coded optically-readable paint strip along board edge |
| US5140745A (en) * | 1990-07-23 | 1992-08-25 | Mckenzie Jr Joseph A | Method for forming traces on side edges of printed circuit boards and devices formed thereby |
| CN103366208A (en) * | 2012-04-09 | 2013-10-23 | 迈智电脑股份有限公司 | Code marking system and product thereof |
| CN104299106A (en) * | 2014-11-03 | 2015-01-21 | 叶校然 | Product tracing inquiry system of PCB enterprise |
| CN104820849A (en) * | 2015-04-22 | 2015-08-05 | 上海凯思尔电子有限公司 | Traceability system suitable for PCB manufacturing |
| CN105196709A (en) * | 2015-10-19 | 2015-12-30 | 红板（江西）有限公司 | Laser code printing device for circuit boards |
| CN105291602A (en) * | 2015-11-11 | 2016-02-03 | 叶校然 | Method and equipment for recognizing bar codes of inner layers of circuit boards and printing codes on outer layers of circuit boards |
| CN106604551A (en) * | 2016-12-19 | 2017-04-26 | 深圳崇达多层线路板有限公司 | Circuit board production method through automatic pressing and profiling |
| CN107944517A (en) * | 2017-12-13 | 2018-04-20 | 广东正业科技股份有限公司 | A kind of product whole process quality retroactive method |
| CN107992917A (en) * | 2017-12-13 | 2018-05-04 | 广东正业科技股份有限公司 | A kind of quality retroactive method of efficient multi-layer PCB |
| CN109033917A (en) * | 2018-06-04 | 2018-12-18 | 广州美维电子有限公司 | A kind of information tracing method of pcb board and pcb board |
| CN208613803U (en) * | 2018-06-26 | 2019-03-19 | 雪龙数控设备(深圳)有限公司 | Wiring board traceability code drilling device |
| CN209028662U (en) * | 2018-08-10 | 2019-06-25 | 湖南莱塞智能装备有限公司 | A kind of full processing procedure system for tracing and managing of PCB |
| CN108921265A (en) * | 2018-08-29 | 2018-11-30 | 东莞市国瓷新材料科技有限公司 | A kind of ceramic substrate and preparation method thereof with traceable function |
| CN209532174U (en) * | 2019-01-25 | 2019-10-25 | 雪龙数控设备(深圳)有限公司 | The online traceability code drilling device of wiring board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111587065A (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209028662U (en) | A kind of full processing procedure system for tracing and managing of PCB | |
| CN104820849A (en) | Traceability system suitable for PCB manufacturing | |
| CN102271464B (en) | Method for tracing quality of circuit board | |
| CN111587065B (en) | Method for accurately tracing single piece flow of drilling workshop based on PCB industry | |
| CN107390649B (en) | Project type product processing Internet of things support system | |
| CN107895185A (en) | A kind of workpiece process intelligent tracing system based on RFID technique | |
| CN108447806B (en) | Chip automatic production equipment, system and method thereof | |
| CN104626324B (en) | A kind of sheet material automatic processing method for having furniture made to order | |
| CN104476616A (en) | Manufacturing method of slot of printed-circuit board | |
| CN108161048A (en) | A kind of integration PCB automatic drilling methods | |
| CN107717965A (en) | A kind of locating piece based on tag recognition goes out to be put in storage method and apparatus | |
| CN106276012A (en) | Material access arrangement and online material access method | |
| CN109561584A (en) | A kind of processing method of PCB circuit board tooling and PCB circuit board | |
| CN110766245A (en) | Production equipment and control method thereof | |
| CN103545595B (en) | Automatic line-picking method and automatic line-picking device for built-in card antennas | |
| CN209928478U (en) | Printed circuit board manufacturing process tracing system | |
| CN101525098A (en) | Bar code yarn tube for quality management of spun yarn | |
| CN101551659B (en) | Storage monitoring system integrating wireless radio-frequency identification | |
| CN202563528U (en) | Assembly system | |
| CN101500401B (en) | Surface adhesion equipment having automatic feeding function | |
| KR101408848B1 (en) | Information tracing method of pcb test processing with multi-step mapping | |
| CN206480053U (en) | A kind of fabric defects detection tracing management system based on Digital Image Processing | |
| CN113766724A (en) | Circuit board and manufacturing method and tracing method thereof | |
| CN205318462U (en) | Building management system based on radio frequency identification technology | |
| KR20100011004A (en) | Rfid tag system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |