Claims:1. A system for laser marking on an article, the system comprising:
a laser assembly comprising:
a conveyor unit adapted to move the article form an inlet side to an outlet side;
a scanner operatively coupled to the conveyor unit to scan one or more coded data on the article and generate a first signal based on the scanned coded data;
a clamping unit configured with the scanner , the clamping unit is adapted to hold the article at a predefined position;
a sensor configured with the clamping unit to detect the article at the predefined position and generate a second signal based on the detection;
a laser unit comprises a first laser source accommodated in a first cavity, a second laser source accommodated in a second cavity; a first galvo coupled to the first cavity and a second galvo coupled to the second cavity, each of first galvo and the second galvo having an optical lens; and
a lifter configured with the laser unit to move any or a combination of the first galvo and second galvo in a vertical direction; and
a control unit comprising one or more processors and a memory coupled to the one or more processors, the memory storing a set of instructions executable by the one or more processors to:
receive the generated first signal;
select one or more templates from a plurality of templates stored in a database that is operatively coupled to the control unit based on the received first signal;
receive the generated second signal; and
generate actuation signals based on the received first signal and the selected one or more templates;
wherein the first laser source and the second laser source are adapted to emit laser beams upon receipt of the actuation signals, and
wherein the optical lens of the first galvo and the second galvo are adapted to direct the emitted laser beams to a first marking region and a second marking region, respectively, on the article to enable marking on the article in accordance with the selected one or more templates.
2. The system as claimed in claim 1, wherein the control unit is configured to generate a third signal based on the received first signal.
3. The system as claimed in claim 2, wherein the lifter is configured to move any or a combination of the first galvo and second galvo at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
4. The system as claimed in claim 1, wherein the lifter comprises one or more stepper motors to enable movement of the first galvo and the second galvo in a vertical direction.
5. The system as claimed in claim 1, wherein each of the first galvo and the second galvo comprises a set of mirrors with precise motion capability to reflect the emitted laser beams at predetermined angles towards the corresponding optical lenses.
6. The system as claimed in claim 1, wherein the one or more coded data are selected from any or combination of barcodes and QR codes.
7. The system as claimed in claim 1, wherein the article is a molded case circuit breaker.
8. A method for laser marking on an article, the method comprising steps of:
providing, conveyor unit adapted to move the article form an inlet side to an outlet side;
scanning, by a scanner, one or more coded data on the article and generate a first signal based on the scanned coded data;
detecting, by a sensor, the article at a predefined position on the conveyor unit and generate a second signal based on the detection;
receiving, by a control unit having one or more processors, the first signal;
selecting, by the one or more processors, one or more templates from a plurality of templates stored in a database based on the received first signal;
receiving, by the one or more processors, the second signal;
generating, by the one or more processors, actuation signals based on the received first signal and the selected one or more templates; and
emitting, by a first laser source and a second laser source, laser beams upon receipt of the actuation signals.
wherein the emitted laser beams are directed to a first marking region and second marking region on the article to enable marking on the article in accordance with the selected one or more templates.
9. The method as claimed in claim 8, wherein the method comprising a step of generating, by the control unit, a third signal based on the received first signal.
10. The method as claimed in claim 9, wherein the method comprises a step of moving any or a combination of a first galvo and a second galvo, by a lifter, at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates generally to the field of laser marking system. In particular, the present disclosure relates to an online automated twin head laser marking system for engraving features on multiple sides of switchgears.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] As is well known in the art, marking systems are used for marking indicia on surface of objects. A major use of the marking system is for marking an article or product or a product package particularly with respect to high volume manufacturing lines, so as to take advantage of marking these goods "on-the-fly". Marking provides data/information about the product, such as, date of manufacture, shelf life, factory origin, model and/or serial number, product tracking and the like.
[0004] Markings on switchgears/molded-case circuit breaker(MCCB) are done for marking safety information on the switchgears. Generally, a conventional single face marking using pad printing method is used for marking the switchgears. This type of marking is scratch/fade prone. Stencils of different templates are to be maintained and silicon/rubber stamps also to be replaced too frequently. Preparation of ink is in optimum proportions are done manually so that standardization and consistency of quality of the mark is difficult.
[0005] There is, therefore a need in art to provide a simple and cost effectiveonline automated twin head laser marking system for engraving features on multiple sides of a MCCB.
[0006] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0007] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about”. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0008] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0009] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0010] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for regions of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
OBJECTS OF THE INVENTION
[0011] A general object of the present invention is to provide an improved laser marking system for engraving features on an article.
[0012] Another object of the present invention is to provide an online automated twin head laser marking system for engraving features on multiple sides of a switchgear.
[0013] Another object of the present invention is to provide a simple and cost effective laser marking system for engraving features on multiple sides of a molded-case circuit breaker.
[0014] Another object of the present invention is to provide method for laser marking on an article.
[0015] Another object of the present invention is to provide an improved and efficient system and method which can be easily implemented for laser marking on multiple sides of switchgears.

SUMMARY
[0016] The present disclosure relates generally to the field of laser marking system. In particular, the present disclosure relates to an online automated twin head laser marking system for engraving features on multiple sides of a MCCB.
[0017] In an aspect, the present disclosure provides a system for laser marking on an article, the system can include a laser assembly include a conveyor unit adapted to move the article form an inlet side to an outlet side, a scanner operatively coupled to the conveyor unit to scan one or more coded data on the article and generate a first signal based on the scanned coded data, a clamping unit configured with the scanner to hold the article at a predefined position, a sensor configured with the clamping unit to detect the article at the predefined position and generate a second signal based on the detection; a laser unit that can include a first laser source accommodated in a first cavity, a second laser source accommodated in a second cavity, a first galvo coupled to the first cavity and a second galvo coupled to the second cavity, and a lifter configured with the laser unit to move any or a combination of the first galvo and the second galvo in a vertical direction; and a control unit. Each of the first galvo and the second galvo having an optical lens.
[0018] In an aspect, the control unit can include one or more processors and a memory coupled to the one or more processors, the memory storing a set of instructions executable by the one or more processors to: receive the generated first signal; select one or more templates from a plurality of templates stored in a database that is operatively coupled to the control unit based on the received first signal; receive the generated second signal; and generate actuation signals based on the received first signal and the selected one or more templates.
[0019] In an aspect, the first laser source and the second laser source can be adapted to emit laser beams upon receipt of the actuation signals.
[0020] In an aspect, the optical lens of the first galvo and the second galvo can be adapted to direct the emitted laser beams to a first marking region and a second marking region, respectively, on the article to enable marking on the article in accordance with the selected one or more templates.
[0021] In an embodiment, the control unit can be configured to generate a third signal based on the received first signal.
[0022] In an embodiment, the lifter can include one or more stepper motors to enable movement of the first galvo and the second galvo in a vertical direction. The lifter can be configured to move any or a combination of the first galvo and the second galvo at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
[0023] In an embodiment, each of the first galvo and the second galvo comprises a set of mirrors with precise motion capability to reflect the emitted laser beams from the laser source at predetermined angles towards the corresponding optical lenses.
[0024] In an embodiment, the one or more coded data are selected from any or combination of barcodes and QR codes, and the like.
[0025] In another aspect of the present disclosure provides a method for laser marking on an article, the method can include steps of: providing, conveyor unit adapted to move the article form an inlet side to an outlet side; scanning, by a scanner, one or more coded data on the article and generate a first signal based on the scanned coded data; detecting, by a sensor, the article at a predefined position on the conveyor unit and generate a second signal based on the detection; receiving, by a control unit having one or more processors, the first signal; selecting, by the one or more processors, one or more templates from a plurality of templates stored in a database based on the received first signal; receiving, by the one or more processors, the second signal; generating, by the one or more processors, actuation signals based on the received first signal and the selected one or more templates; and emitting, by a first laser source and a second laser source, laser beams upon receipt of the actuation signals. wherein the emitted laser beams are directed to a first marking region and second marking region on the article to enable marking on the article in accordance with the selected one or more templates.
[0026] In an embodiment, the method can include a step of generating, by the control unit, a third signal based on the received first signal.
[0027] In an embodiment, the method can include a step of moving any or a combination of a first galvo and a second galvo, by a lifter, at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
[0028] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0029] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[0030] FIG. 1 illustrates exemplary representation of a leaser assembly of the proposed system for laser marking on an article, in accordance of an embodiment of the present disclosure.
[0031] FIG. 2 illustrates an exemplary block diagram representation of the proposed system laser marking on an article, in accordance of an embodiment of the present disclosure.
[0032] FIG. 3 illustrates an exemplary flow diagram of the proposed method for laser marking on an article, in accordance of an embodiment of the present disclosure.
[0033] FIG. 4 illustrates an exemplary working flow diagram representation of the proposed system for laser marking on an article, in accordance of an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0034] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0035] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[0036] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0037] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[0038] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0039] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0040] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0041] The present disclosure relates generally to the field of laser marking system. In particular, the present disclosure relates to an online automated twin head laser marking system for engraving features on multiple sides of a molded-case circuit breaker (MCCB).
[0042] In an embodiment, the present disclosure provides a system for laser marking on an article, the system can include a laser assembly, and a control unit operatively coupled to the laser assembly. The laser assembly can include conveyor unit adapted to move the article form an inlet side to an outlet side; a scanner operatively coupled to the conveyor unit to scan one or more coded data on the article and generate a first signal based on the scanned coded data; a clamping unit configured with the scanner to hold the article at a predefined position; a sensor configured with the clamping unit to detect the article at the predefined position and generate a second signal based on the detection; a laser unit that can include a first laser source accommodated in a first cavity, a second laser source accommodated in a second cavity; a first galvo coupled to the first cavity and a second galvo coupled to the second cavity, each of first galvo and the second galvo having an optical lens; a lifter configured with the laser unit to move any or a combination of the first galvo and the second galvo in a vertical direction; and.
[0043] In an embodiment, the control unit can include one or more processors and a memory coupled to the one or more processors, the memory storing a set of instructions executable by the one or more processors to: receive the generated first signal; select one or more templates from a plurality of templates stored in a database that is operatively coupled to the control unit based on the received first signal; receive the generated second signal; and generate actuation signals based on the received first signal and the selected one or more templates.
[0044] In an embodiment, the first laser source and the second laser source can be adapted to emit laser beams upon receipt of the actuation signals.
[0045] In an embodiment, the optical lens of the first galvo and the second galvo can be adapted to direct the emitted laser beams to a first marking region and a second marking region, respectively, on the article to enable marking on the article in accordance with the selected one or more templates.
[0046] In an embodiment, the control unit can be configured to generate a third signal based on the received first signal.
[0047] In an embodiment, the lifter can include one or more stepper motors to enable movement of the first galvo and the second galvo in a vertical direction. The lifter can be configured to move any or a combination of the first galvo and the second galvo at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
[0048] In an embodiment, each of the first galvo and the second galvo comprises a set of mirrors with precise motion capability to reflect the emitted laser beams from the laser source at predetermined angles towards the corresponding optical lenses.
[0049] In an embodiment, the one or more coded data are selected from any or combination of barcodes and QR codes, and the like.
[0050] In another embodiment of the present disclosure provides a method for laser marking on an article, the method can include steps of: providing, conveyor unit adapted to move the article form an inlet side to an outlet side; scanning, by a scanner, one or more coded data on the article and generate a first signal based on the scanned coded data; detecting, by a sensor, the article at a predefined position on the conveyor unit and generate a second signal based on the detection; receiving, by a control unit having one or more processors, the first signal; selecting, by the one or more processors, one or more templates from a plurality of templates stored in a database based on the received first signal; receiving, by the one or more processors, the second signal; generating, by the one or more processors, actuation signals based on the received first signal and the selected one or more templates; and emitting, by a first laser source and a second laser source, laser beams upon receipt of the actuation signals. wherein the emitted laser beams are directed to a first marking region and second marking region on the article to enable marking on the article in accordance with the selected one or more templates.
[0051] In an embodiment, the method can include a step of generating, by the control unit, a third signal based on the received first signal.
[0052] In an embodiment, the method can include a step of moving any or a combination of a first galvo and a second galvo, by a lifter, at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
[0053] FIG. 1 illustrates exemplary representation of a leaser assembly of the proposed system for laser marking on an article, in accordance of an embodiment of the present disclosure.In an embodiment, the disclosed laser assembly can include a conveyor unit 102 adapted to move the article (not shown) form an inlet side 104 to an outlet side 106; a scanner (not shown) operatively coupled to the conveyor unit 102 to scan one or more coded data on the article and generate a first signal based on the scanned coded data; a clamping unit 108 configured with the scanner to hold the article at a predefined position on the conveyor unit 102; and a sensor (not shown) configured with the clamping unit 108 to detect the article at the predefined position and generate a second signal based on the detection of the article.
[0054] In an embodiment, the one or more coded data on the article can be selected from any or combination of barcodes and QR codes.
[0055] In an embodiment, the article can be a molded-case circuit breaker/switchgear.
[0056] In an embodiment, the laser assembly can include a laser unitthat can include a first laser source accommodated in a first cavity 110, a first galvo coupled 114 to the first cavity 110, a second laser source accommodated in a second cavity 112, and a second galvo 116 coupled to the second cavity 112.
[0057] In an embodiment, the first laser source and the second laser source are adapted to emit laser beams which are passed through optical cables in the corresponding first cavity 110 and second cavity 112, and the laser beams are focused in the corresponding first galvo 114 and the second galvo 116.
[0058] In an embodiment, each of the first galvo114 and the second galvo116 having an optical lens (not shown). The optical lens of the first galvo114 and the second galvo116 can be adapted to direct the emitted laser beams/focused laser beams to a first marking region and a second marking region, respectively, on the article to enable marking on the article.
[0059] In an embodiment, each of the first galvo114 and the second galvo116 can include a set of mirrors with precise motion capability to reflect the emitted laser beams from the laser source at predetermined angles towards the corresponding optical lenses of the first galvo114 and the second galvo116.
[0060] In an embodiment, each of the first galvo114 and the second galvo116 can include one or more servo motors to enable movement of the set of mirrors of the first galvo114 and the second galvo116.
[0061] In an embodiment, the laser assembly can include a lifter (also referred to as Z lifter) 118 configured with the laser unit to move any or a combination of the first galvo114 and the second galvo116 in a vertical direction. The lifter 118 can include one or more stepper motors (not shown) to enable movement of the first galvo114 and the second galvo 116 in the vertical direction.
[0062] FIG. 2 illustrates an exemplary block diagram representation of the proposed system laser marking on an article, in accordance of an embodiment of the present disclosure. The disclosed system 200 can include a control unit 202 for controlling operation of the laser assembly. The control unit can include one or more processors 204 and a memory 206 coupled to the one or more processors 204.The one or more processor(s) 204 can be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, logic circuitries, and/or any devices that manipulate databased on operational instructions. Among other capabilities, the one or more processor(s) 204 are configured to fetch and execute computer-readable instructions stored in the memory 206. The memory 206 can store one or more computer-readable instructions or routines, which can be fetched and executed to create or share the data units over a network service. The memory 206 can include any non-transitory storage device including, for example, volatile memory such as RAM, or non-volatile memory such as EPROM, flash memory, and the like.
[0063] Various components /units of the proposed system 200 can be implemented as a combination of hardware and programming (for example, programmable instructions) to implement their one or more functionalities as elaborated further themselves or using one or more processors 204. In examples described herein, such combinations of hardware and programming may be implemented in several different ways. For example, the programming for the units may be processor executable instructions stored on a non-transitory machine-readable storage medium and the hardware for units may include a processing resource (for example, one or more processors), to execute such instructions. In the present examples, the machine-readable storage medium may store instructions that, when executed by the processing resource, implements the various units. In such examples, the system 200 may include the machine-readable storage medium storing the instructions and the processing resource to execute the instructions, or the machine-readable storage medium may be separate but accessible to system 200 and the processing resource. In other examples, the units may be implemented by electronic circuitry. A database 208 may include data that is either stored or generated as a result of functionalities implemented by any of the other components /units of the proposed system 200.
[0064] In an embodiment, the processor 204 can be configured to receive the generated first signal generated by a scanner 210 of the laser assembly.
[0065] In an embodiment, the first signal can be correspond to information regarding the switchgear to be laser marked based on the scheduling logic.
[0066] In an embodiment, the scanner 210 can be any of a barcode scanner and QR code scanner.
[0067] In an embodiment, the processors 204 can be configured to select one or more templates from a plurality of templates stored in the database 208 that is operatively coupled to the control unit 202 based on the received first signal.
[0068] In an embodiment, the database 208 can be a server.
[0069] In an embodiment, the processors 204 can be configured to receive the generated second signal generated from a sensor 212 of the laser assembly and generate actuation signals based on the received first signal and the selected one or more templates.
[0070] In an embodiment, the sensor 212 can be a presence sensor.
[0071] In an embodiment, the first laser source and the second laser source (collectively referred to as laser sources 214 hereinafter) of the laser assembly can be adapted to emit the laser beams upon receipt of the actuation signals.
[0072] In an embodiment, the system can include a laser card 216 operatively coupled to the laser sources 214 and the control unit 202.
[0073] In an embodiment, the control unit 202 can be configured to generate a third signal based on the received first signal.
[0074] In an embodiment, the lifter 118 can be configured to move any or a combination of the first galvo and the second galvo at predetermined positions upon receipt of the third signal to a stepper driver 218 of stepper motors 220 of the lifter 118 to maintain a distance between the optical lens of the first galvo114 and the first marking region on the article equal to a focal length of the optical lenses of the first galvo114 and a distance between the second galvo116 and the second marking region on the article equal to a focal length of the optical lens of the second galvo 116.
[0075] In an embodiment, the laser sources214 can be adapted to emit the laser beams upon receipt of the actuation signals.
[0076] In an embodiment, one or more servo motors of each of the galvos114/116 can include can be operatively coupled the control unit 202 to allow movement of the set of mirrors of the first galvo114 and the second galvo116 for directing the focused laser beams from the laser sources 214 at the predetermined angles towards the corresponding optical lenses of the galvos114/116.
[0077] In an embodiment, the optical lenses of the galvos114/16 can be adapted to direct the laser beams to the first marking region and the second marking region, respectively, on the article to enable marking on the article in accordance with the selected one or more templates.
[0078] In an exemplary embodiment, after marking is done on both the faces the article is pushed out of fixture of the clamping unit 232 and moved onto outlet side of conveyor unit 202 for further operation and receipt of completion signals from the control unit 202.
[0079] In an embodiment, the conveyor unit 102 can include one or more drivers such as motors to drive a conveyor of the conveyor unit 102. The drivers of the conveyor unit can be operatively coupled to the control unit 202 for making conveyor unit 102 on-line at an assembly line.
[0080] In an embodiment, the system 200 can include a human machine interface (HMI) 222 such as a computing unit operatively coupled to the control unit 202 to allow interaction of an operator to use the system 200.In an exemplary embodiment, the computing unit can be any of a computer system, a laptop, a smart mobile phone and the like.
[0081] In an embodiment, the system 200 can include switch and indicators 230 operatively coupled to the control unit 202.
[0082] In an embodiment, the system 200 can include a safety unit that can include a pneumatic sub-system 224, an air conditioner 226 and a fume extractor 228.The air conditioner 226 can be adapted to maintain optimum temperature while the system 200 is operating. The fume extractor 228 can be adapted to purify air and maintain the ambience clean.
[0083] FIG. 3 illustrates an exemplary flow diagram of the proposed method for laser marking on an article,in accordance of an embodiment of the present disclosure.In embodiment, the disclosed method 300 can include at step 302, providing, a conveyor unit adapted to move the article form an inlet side to an outlet side, and at step 304, scanning, by a scanner, one or more coded data on the article and generate a first signal based on the scanned coded data.
[0084] In an embodiment, the disclosed method 300 can include at step 306, detecting, by a sensor, the article at a predefined position on the conveyor unit and generate a second signal based on the detection, and at step 308, receiving, by a control unit having one or more processors, the first signal.
[0085] In an embodiment, the disclosed method 300 can include at step 310, selecting, by the one or more processors, one or more templates from a plurality of templates stored in a database based on the received first signal, and at step 312, receiving, by the one or more processors, the second signal.
[0086] In an embodiment, the disclosed method 300 can include at step 314, generating, by the one or more processors, actuation signals based on the received first signal and the selected one or more templates, and at step 316, emitting, by a first laser source and a second laser source, laser beams upon receipt of the actuation signals. The emitted laser beams are directed to a first marking region and a second marking region on the article to enable marking on the article in accordance with the selected one or more templates.
[0087] In an embodiment, the method can include a step of generating, by the control unit, a third signal based on the received first signal.
[0088] In an embodiment, the method can include a step of moving any or a combination of a first galvo and a second galvo, by a lifter, at predetermined positions upon receipt of the third signal to maintain a distance between the optical lens of the first galvo and the first marking region on the article equal to a focal length of the optical lenses of the first galvo and a distance between the second galvo and the second marking region on the article equal to a focal length of the optical lens of the second galvo.
[0089] FIG. 4 illustrates an exemplary working flow diagram representation of the proposed system for laser marking on an article, in accordance of an embodiment of the present disclosure. In an exemplary embodiment, the method 400 can include at step 402, scanning barcode on an article such as a MCCB by a scanner. At step 404, check line information and number of poles of the MCCB, at step 406, if unable to identify from the barcode then the step 402 is repeated, at step 408, if the number of poles are three then, at step 410, check if the pointer is at home position which is the base focus of the lowest height variant, if yes then, at step 412, start marking, and at step 414, wait for completion signal, and if no, then at step 416, send required pulse and direction of rotation to motor through the control unit using stepper driver. At step 418 wait for pulse completion signal, at step 420, start marking, and at step 422, wait for completion signal from the control unit.
[0090] In an embodiment, at step 424, if the number of poles are four, then at step 426, check if the pointer is at home position which is the base focus of the lowest height variant, if yes, then at step 428, start marking, and at step 430, wait for completion signal, and if no, then at step 432, send required pulse and direction of rotation to motor through the control unit using stepper driver, and after that the steps from 418 to 422 are repeated.
[0091] Without departing from the spirit and concept of the present invention, any variations and modifications to the embodiments should be within the apprehension of those with ordinary knowledge and skills in the art, and therefore fall in the scope of the present invention which is defined by the accompanied claims. Though the present invention has been described on the basis of some preferred embodiments, those skilled in the art should appreciate that those embodiments should by no means limit the scope of the present invention. Without departing from the spirit and concept of the present invention, any variations and modifications to the embodiments should be within the apprehension of those with ordinary knowledge and skills in the art, and therefore fall in the scope of the present invention which is defined by the accompanied claims.
[0092] Only certain features of the invention have been specifically illustrated and described herein, and many modifications and changes will occur to those skilled in the art. The invention is not restricted by the preferred embodiment described herein in the description. It is to be noted that the invention is explained by way of exemplary embodiment and is neither exhaustive nor limiting. Certain aspects of the invention that not been elaborated herein in the description are well understood by one skilled in the art. Also, the terms relating to singular form used herein in the description also include its plurality and vice versa, wherever applicable. Any relevant modification or variation, which is not described specifically in the specification are in fact to be construed of being well within the scope of the invention. The appended claims are intended to cover all such modifications and changes which fall within the spirit of the invention.
[0093] The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.
[0094] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the appended claims.
[0095] While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.
[0096] In the description of the present specification, reference to the term "one embodiment," "an embodiments", "an example", "an instance", or "some examples" and the description is meant in connection with the embodiment or example described, the particular feature, structure, material, or characteristic included in the present invention, at least one embodiment or example. In the present specification, the term of the above schematic representation is not necessarily for the same embodiment or example. Furthermore, the particular features structures, materials, or characteristics described in any one or more embodiments or examples in proper manner. Moreover, those skilled in the art can be described in the specification of different embodiments or examples are joined and combinations thereof.
[0097] All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
[0098] Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
[0099] The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
[00100] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[00101] The present disclosure provides an improved laser marking system for engraving features on an article.
[00102] The present disclosure provides an online automated twin head laser marking system for engraving features on multiple sides of a switchgear.
[00103] The present disclosure provides a simple and cost effective laser marking system for engraving features on multiple sides of a molded case circuit breaker.
[00104] The present disclosure provides a method for laser marking on an article.
[00105] The present disclosure provides an improved and efficient system and method which can be easily implemented for laser marking on multiple sides of switchgears.