CN106945409A - A kind of marking machine and its alignment method - Google Patents
A kind of marking machine and its alignment method Download PDFInfo
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- CN106945409A CN106945409A CN201710146152.6A CN201710146152A CN106945409A CN 106945409 A CN106945409 A CN 106945409A CN 201710146152 A CN201710146152 A CN 201710146152A CN 106945409 A CN106945409 A CN 106945409A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000000758 substrate Substances 0.000 claims description 128
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 230000002146 bilateral effect Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000576 coating method Methods 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/46—Applications of alarms, e.g. responsive to approach of end of line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Supply And Installment Of Electrical Components (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a kind of marking machine and its alignment method, the marking machine includes：Microscope carrier, multiple images getter, judge module and alarm module；Wherein, the multiple image grabbers for obtaining image of periphery correspondence of display base plate on microscope carrier, and the corresponding image grabber in the relative both sides of display base plate quantity it is identical and correspond, it so may be constructed bilateral alignment system, the view data obtained by both sides image grabber is measured jointly, both sides are drawn respectively to place value, and then judge whether that contraposition is abnormal to the contrast of place value and normal data according to the bilateral of feedback.So bilateral contraposition judges more accurately judge that contraposition is abnormal relative to unilateral contraposition judgement in the prior art, so that the more effectively generation of control contraposition alarm, improves equipment mobility；And can largely reduce that technique is bad, image grabber camera lens grabs the factor such as partially and causes to align the occurrence frequency of false alarm, effective lifting means mobility.
Description
Technical Field
The invention relates to the technical field of display, in particular to a marking machine and an alignment method thereof.
Background
The marking machine is a device used in the glue coating photoetching process in the field of display Panel manufacturing, and is mainly used for marking the identification code ID of Glass substrate and the identification code ID of display substrate Panel. When the marking machine is used for marking, the substrate needs to be aligned, so that the position of the substrate is determined to be free from offset, and the position of the marking ID on the substrate is ensured to meet the design requirement of a product.
The current marking machine counterpoint principle is: as shown in fig. 1, two reference edges of the substrate are photographed by 3 image acquirers C (e.g. CCDCamera) corresponding to the P edge of the substrate, and compared with a standard photograph, so as to measure alignment values of the two edges to determine alignment; when the measured alignment value exceeds the set range, alignment alarm can be generated, so that the substrate is subjected to angle adjustment to realize accurate alignment.
However, in actual production, due to some process problems or the brightness of the lens of the image acquirer, an image acquirer is often mistakenly grabbed or misaligned in the alignment process to cause an alignment alarm (such an alarm is usually defined as a false alarm, the position of the substrate itself is correct, and the measurement of the alignment value is abnormal). The counterpoint defect of present marking machine is that the counterpoint value measurement is single measurement, and just simple and standard photograph and the alarm range who sets for contrast, the warning rule is single to the camera lens of certain image acquisition ware is grabbed wrong or is grabbed when deviating from the accurate judgement and be grabbing partially, lead to equipment frequent emergence counterpoint to report to the police, staff can't judge the authenticity of counterpoint deviation when taking place this warning simultaneously, lead to equipment to be married and is influenced, can cause the base plate when handling the anomaly piece when serious, the condition such as cost impaired.
Therefore, how to improve the problem of false alarm generated when the marking machine performs alignment is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a marking machine and a contraposition method thereof, which are used for solving the problem of false alarm generated when the marking machine is contraposition in the prior art.
The embodiment of the invention provides a marking machine, which comprises: the system comprises a carrying platform, a plurality of image acquirers, a judgment module and an alarm module; wherein,
the carrying platform is used for placing a display substrate to be marked;
each image acquirer is used for acquiring an image of each edge of the display substrate, converting the image into corresponding data information and transmitting the data information to the judging module; each image acquirer is positioned right above the carrying platform, and the orthographic projection of each image acquirer on the carrying platform is distributed on the periphery of the display substrate to be marked; the image acquirers corresponding to two opposite sides of the display substrate are the same in number and are in one-to-one correspondence;
the judging module is used for comparing the data information with pre-stored standard data and judging whether the display substrate deviates according to a comparison result, if so, a first control signal is input to the alarm module, and if not, a second control signal is input to the alarm module; the standard data comprises standard values and standard range values corresponding to all edges of the display substrate, and a distance range value corresponding to a distance between two opposite sides of the display substrate;
the alarm module is used for sending out warning prompt when receiving the first control signal and keeping the current state when receiving the second control signal.
In a possible implementation manner, the marking machine provided in an embodiment of the present invention includes: six of the image obtainers;
the display substrate to be marked comprises two groups of opposite sides, wherein one group of opposite sides corresponds to four image acquirers, and the other group of opposite sides corresponds to two image acquirers.
In a possible implementation manner, in the marking machine provided by the embodiment of the present invention, the display substrate to be marked includes a long edge group and a short edge group, where each long edge in the long edge group corresponds to two image obtainers, and each short edge in the short edge group corresponds to one image obtainer.
In a possible implementation manner, in the marking machine provided in an embodiment of the present invention, the determining module is specifically configured to:
comparing the measured values corresponding to the edges of the display substrate in the data information with the corresponding standard values in the standard data;
when the measured values corresponding to the opposite sides of at least one group of the display substrates exceed the standard range value and the distance calculated by the two measured values corresponding to the opposite sides does not exceed the distance range value compared with the actual distance between the opposite sides, the first control signal is input to the alarm module; otherwise, the second control signal is input to the alarm module.
In a possible implementation manner, the marking machine provided in an embodiment of the present invention further includes: an automatic motor;
the automatic motor is used for controlling the carrying platform to adjust the placing angle of the display substrate.
The embodiment of the invention provides an alignment method of the marking machine, which comprises the following steps:
acquiring images of all edges of a display substrate to be marked and converting the images into corresponding data information;
comparing the data information with pre-stored standard data, and judging whether the display substrate deviates according to a comparison result, if so, outputting a first control signal, otherwise, outputting a second control signal;
and sending out a warning prompt when the first control signal is received, and keeping the current state when the second control signal is received.
In a possible implementation manner, in the alignment method provided by an embodiment of the present invention, the comparing the data information with standard data stored in advance, and determining whether the display substrate is shifted according to a comparison result, if so, outputting a first control signal, otherwise, outputting a second control signal, specifically including:
comparing the measured values corresponding to the edges of the display substrate in the data information with the standard values and the standard range values corresponding to the standard data;
when the measured values corresponding to at least one group of opposite sides of the display substrate exceed the standard range value and the distance calculated by the two measured values corresponding to the opposite sides does not exceed the distance range value compared with the actual distance between the opposite sides, outputting the first control signal; otherwise, outputting the second control signal.
In a possible implementation manner, the alignment method provided in an embodiment of the present invention further includes:
and after the warning prompt is sent out, determining the reason for the deviation of the display substrate and carrying out corresponding adjustment.
In a possible implementation manner, the alignment method provided in an embodiment of the present invention further includes:
placing the display substrate to be marked on the carrying platform, and manually adjusting the placing angle of the display substrate;
and controlling the carrying platform to automatically adjust the placing angle of the display substrate through an automatic motor.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a marking machine and an alignment method thereof, wherein the marking machine comprises: the system comprises a carrying platform, a plurality of image acquirers, a judgment module and an alarm module; the carrying platform is used for placing a display substrate to be marked; each image acquirer is used for acquiring images of each edge of the display substrate, converting the images into corresponding data information and transmitting the data information to the judging module; the image acquiring devices are positioned right above the carrying platform, and the orthographic projections on the carrying platform are distributed on the periphery of the display substrate to be marked; the number of the corresponding image acquirers on the two opposite sides of the display substrate is the same and the image acquirers are in one-to-one correspondence; the judging module is used for comparing the data information with pre-stored standard data and judging whether the display substrate deviates according to a comparison result, if so, a first control signal is input to the alarm module, and if not, a second control signal is input to the alarm module; the standard data comprises standard values and standard range values corresponding to all edges of the display substrate, and a distance range value corresponding to the distance between two opposite edges of the display substrate; the alarm module is used for sending out warning prompt when receiving the first control signal and keeping the current state when receiving the second control signal.
According to the marking machine provided by the embodiment of the invention, the periphery of the display substrate positioned on the carrying platform corresponds to the plurality of image acquirers for acquiring images, and the image acquirers corresponding to two opposite sides of the display substrate are the same in number and are in one-to-one correspondence, so that a bilateral alignment system can be formed. Compared with the single-side alignment judgment in the prior art, the double-side alignment judgment can more accurately judge the abnormal alignment, thereby more effectively controlling the occurrence of the alignment alarm and improving the equipment utilization rate; the occurrence frequency of alignment false alarms caused by factors such as poor process, image acquirer lens grabbing deviation and the like can be reduced to a greater extent, and the equipment utilization rate is effectively improved; the reference and contrast of the alignment value obtained by a bilateral alignment value measurement mode under the condition of the bilateral alignment system device are stronger, and a more reasonable basis is provided for an engineer to judge the abnormity; the probability of confirming the position of the substrate when a worker enters the equipment is reduced to a certain extent, and the possibility of bringing impurities and foreign matters into the equipment when the worker enters the equipment is reduced; the probability that a worker enters equipment to confirm the position of the substrate or manually tries to correct the substrate due to alignment alarm is reduced, so that the risk of substrate breakage caused by the mistake of the worker is reduced to a certain extent, and the cost loss is favorably controlled; the probability of entering the equipment is reduced, and the safety of the working personnel on equipment exception handling is improved to a certain extent.
Drawings
FIG. 1 is a schematic diagram of an alignment structure of a marking machine in the prior art;
fig. 2 is a schematic structural diagram of a marking machine according to an embodiment of the present invention;
fig. 3 is a flowchart of an alignment method of the marking machine according to the embodiment of the present invention;
fig. 4 is a schematic diagram of an alignment process of the marking machine according to the embodiment of the present invention.
Detailed Description
The following describes in detail a specific implementation of the marking machine and the alignment method thereof according to the embodiment of the present invention with reference to the accompanying drawings.
An embodiment of the present invention provides a marking machine, as shown in fig. 2, including: a stage (not shown in fig. 2), a plurality of image grabbers C (e.g., CCD cameras, represented in fig. 2 as projections of the image grabbers onto the stage), a determination module (not shown in fig. 2), and an alarm module (not shown in fig. 2); wherein,
the carrying platform is used for placing a display substrate P to be marked;
each image acquirer C is used for acquiring images of each edge of the display substrate P, converting the images into corresponding data information and transmitting the data information to the judging module; each image acquirer C is positioned right above the carrying platform, and the orthographic projection on the carrying platform is distributed on the periphery of the display substrate P to be marked; the number of the image acquirers C corresponding to the two opposite sides of the display substrate is the same and corresponds to one another;
the judging module is used for comparing the data information with pre-stored standard data and judging whether the display substrate deviates according to a comparison result, if so, a first control signal is input to the alarm module, and if not, a second control signal is input to the alarm module; the standard data comprises standard values and standard range values corresponding to all edges of the display substrate, and a distance range value corresponding to the distance between two opposite edges of the display substrate;
the alarm module is used for sending out warning prompt when receiving the first control signal and keeping the current state when receiving the second control signal.
According to the marking machine provided by the embodiment of the invention, the periphery of the display substrate positioned on the carrying platform corresponds to the plurality of image acquirers for acquiring images, and the image acquirers corresponding to two opposite sides of the display substrate are the same in number and are in one-to-one correspondence, so that a bilateral alignment system can be formed. Compared with the single-side alignment judgment in the prior art, the double-side alignment judgment can more accurately judge the abnormal alignment, thereby more effectively controlling the occurrence of the alignment alarm and improving the equipment utilization rate; the occurrence frequency of alignment false alarms caused by factors such as poor process, image acquirer lens grabbing deviation and the like can be reduced to a greater extent, and the equipment utilization rate is effectively improved; the reference and contrast of the alignment value obtained by a bilateral alignment value measurement mode under the condition of the bilateral alignment system device are stronger, and a more reasonable basis is provided for an engineer to judge the abnormity; the probability of confirming the position of the substrate when a worker enters the equipment is reduced to a certain extent, and the possibility of bringing impurities and foreign matters into the equipment when the worker enters the equipment is reduced; the probability that a worker enters equipment to confirm the position of the substrate or manually tries to correct the substrate due to alignment alarm is reduced, so that the risk of substrate breakage caused by the mistake of the worker is reduced to a certain extent, and the cost loss is favorably controlled; the probability of entering the equipment is reduced, and the safety of the working personnel on equipment exception handling is improved to a certain extent.
In a specific implementation, as shown in fig. 2, the marking machine provided in the embodiment of the present invention may include: six image acquirers C; the display substrate to be marked comprises two groups of opposite sides, wherein one group of opposite sides corresponds to the four image acquirers, and the other group of opposite sides corresponds to the two image acquirers; and two sets of opposite sides of the display substrate to be marked can be a long side group and a short side group, wherein each long side in the long side group corresponds to two image acquirers C, and each short side in the short side group corresponds to one image acquirer C. Specifically, as shown in fig. 2, in the marking machine provided in the embodiment of the present invention, six image acquirers may be provided, such that one group of opposite sides of the display substrate corresponds to four image acquirers, the other group of opposite sides corresponds to two image acquirers, each long side of a long side group of the display substrate that is longer may correspond to two image acquirers, and each short side of a short side group corresponds to one image acquirer, so that the long side group may compare two groups of data, and more accurately determine whether the display substrate is offset.
In a specific implementation, in the marking machine provided in the embodiment of the present invention, the determining module may be specifically configured to: comparing the measured values of the edges of the corresponding display substrate in the data information with the corresponding standard values in the standard data; when the measured values corresponding to the opposite sides of at least one group of display substrates exceed the standard range value and the comparison between the distance calculated by the two measured values corresponding to the opposite sides and the actual distance between the opposite sides does not exceed the distance range value, inputting a first control signal to an alarm module; otherwise, a second control signal is input to the alarm module.
Specifically, in the marking machine provided by the embodiment of the present invention, the relative distance between the edges captured by the image capturing devices corresponding to the two opposite sides should be close to the length or width of the substrate under normal conditions, regardless of the deviation of the substrate. The conditions under which an alarm occurs are therefore set to: 1. the relative distance of the alignment positions measured by the image acquirer at two sides, namely opposite sides, of the display substrate is approximately equal to the length or width of the substrate in the direction; 2. the measured alignment value of the double-side alignment system exceeds the set range; under the condition of meeting the two conditions, the substrate can be judged to deviate, and the alignment alarm can be generated at the moment, so that the alignment alarm is effectively controlled, and the false alarm is reduced.
In a specific implementation, the marking machine provided in the embodiment of the present invention may further include: an automatic motor; the automatic motor is used for controlling the carrying platform to adjust the placing angle of the display substrate. Specifically, in the marking machine provided by the embodiment of the invention, an automatic motor may be further provided, and after the display substrate is placed on the carrier, the placing angle of the display substrate may be adjusted by the automatic motor, so that the alignment accuracy of the display substrate is improved.
Based on the same inventive concept, an embodiment of the present invention provides an alignment method of the marking machine, as shown in fig. 3, the alignment method may include:
s101, obtaining images of all edges of a display substrate to be marked and converting the images into corresponding data information;
s102, comparing the data information with pre-stored standard data, and judging whether the display substrate deviates according to a comparison result, if so, executing a step S103, otherwise, executing a step S104;
s103, outputting a first control signal;
s104, outputting a second control signal;
and S105, sending out a warning prompt when the first control signal is received, and keeping the current state when the second control signal is received.
In the alignment method provided by the embodiment of the invention, the alignment values at two sides of the display substrate are respectively obtained by common measurement of the two-sided image acquirer, and whether the alignment is abnormal (substrate offset) is judged according to comparison between the feedback two-sided alignment values and standard data. Compared with the single-side alignment judgment in the prior art, the double-side alignment judgment can judge the abnormal alignment more accurately, so that the alignment alarm is more effectively controlled, and the equipment utilization rate is improved.
In a specific implementation, in the alignment method provided in the embodiment of the present invention, step S102 may specifically include: comparing the measured value corresponding to each edge of the display substrate in the data information with the corresponding standard value and standard range value in the standard data; when the measured values corresponding to the opposite sides of at least one group of display substrates exceed the standard range value and the comparison between the distance calculated by the two measured values corresponding to the opposite sides and the actual distance between the opposite sides does not exceed the distance range value, outputting a first control signal; otherwise, outputting a second control signal.
The alignment process of the marking machine provided by the embodiment of the present invention is described in detail below with a specific embodiment, which specifically includes:
as shown in fig. 4, the boxes at 6 positions represent data information corresponding to the images captured by the image capturing device, and the meaning represented by each line in the figure is listed in the small graph at the leftmost position in the figure, where the line B represents a standard line, and the line D represents an alignment line when the substrates are actually aligned. In normal production, when the alignment position of the image acquirer is within +/-Spec (namely a preset standard range), alignment alarm cannot occur. However, in actual production, if a substrate with poor process is encountered (the substrate itself has no obvious position deviation, i.e. within an allowable range), as shown in fig. 4, the middle vertical line m indicates the position of the mark (i.e. the mark generated by the poor process on the substrate during the process production) on the surface of the actual substrate, and this position may be the mark generated by the poor process during the coating process. When alignment is carried out in a photoetching process, the position image acquirer wrongly takes the print as a substrate edge reference edge to take a picture when taking a picture, the system compares data information corresponding to the picture with set standard data to obtain an alignment position measurement c1, the alignment position where the image acquirer takes a picture exceeds a Spec line, alignment deviation alarm occurs at the moment under the original equipment state, and a processing person cannot judge whether the substrate deviates or the picture is abnormal by simply depending on a1 and b1 values in the graph 4, so that the position image acquirer enters the equipment to carry out manual inspection, and a lot of troubles are caused. In the above alignment method provided in the embodiment of the present invention, when such a situation occurs, a system determination may be performed according to the relative distance between the alignment positions at two sides of a1 and a2, b1 and b2, and the relative distance between the alignment positions at two sides of c2 and c1 and c2 in fig. 4, where a1 and a2, b1 and b2, and c2 are all within a set range, and the relative distance between the alignment positions of a1 and a2, and the relative distance between the alignment positions of b1 and b2 are approximately equal to 2200mm, and the relative distance between the alignment positions of c1 and c2 exceeds 2500mm ± spec, and at this time, the system determines that the alignment measurement corresponding to the c1 single-side image acquirer is abnormal, which is a false alarm, that the abnormal is a false alarm, and the operation of the apparatus is not affected. If the system reports an alarm, the system can try to realign at the moment, and a plurality of unnecessary manual detection and confirmation steps are omitted.
In a specific implementation, the alignment method provided in the embodiment of the present invention may further include: and after the warning prompt is sent out, determining the reason for the deviation of the display substrate and carrying out corresponding adjustment. Specifically, after the warning prompt is sent out, the substrate offset direction and the substrate offset can be judged by checking the edge measurement alignment values corresponding to the 6 image acquirers, so that correction and adjustment are realized; in addition, the measurement alignment value can be checked to judge which image acquirer takes a picture, and then adjustment is carried out from the direction related to poor process or image acquirers, so that the abnormal processing efficiency is greatly improved, and the standby time is shortened.
In a specific implementation, the alignment method provided in the embodiment of the present invention may further include: placing a display substrate to be marked on a carrying platform, and manually adjusting the placing angle of the display substrate; the placing angle of the display substrate is automatically adjusted by controlling the carrying platform through the automatic motor. Specifically, the placement angle of the display substrate can be adjusted through manual and automatic motors before image acquisition is carried out, so that normal alignment of the display substrate is guaranteed, and alignment efficiency and accuracy of the display substrate are improved.
The embodiment of the invention provides a marking machine and an alignment method thereof, wherein the marking machine comprises: the system comprises a carrying platform, a plurality of image acquirers, a judgment module and an alarm module; the carrying platform is used for placing a display substrate to be marked; each image acquirer is used for acquiring images of each edge of the display substrate, converting the images into corresponding data information and transmitting the data information to the judging module; the image acquiring devices are positioned right above the carrying platform, and the orthographic projections on the carrying platform are distributed on the periphery of the display substrate to be marked; the number of the corresponding image acquirers on the two opposite sides of the display substrate is the same and the image acquirers are in one-to-one correspondence; the judging module is used for comparing the data information with pre-stored standard data and judging whether the display substrate deviates according to a comparison result, if so, a first control signal is input to the alarm module, and if not, a second control signal is input to the alarm module; the standard data comprises standard values and standard range values corresponding to all edges of the display substrate, and a distance range value corresponding to the distance between two opposite edges of the display substrate; the alarm module is used for sending out warning prompt when receiving the first control signal and keeping the current state when receiving the second control signal.
According to the marking machine provided by the embodiment of the invention, the periphery of the display substrate positioned on the carrying platform corresponds to the plurality of image acquirers for acquiring images, and the image acquirers corresponding to two opposite sides of the display substrate are the same in number and are in one-to-one correspondence, so that a bilateral alignment system can be formed. Compared with the single-side alignment judgment in the prior art, the double-side alignment judgment can more accurately judge the abnormal alignment, thereby more effectively controlling the occurrence of the alignment alarm and improving the equipment utilization rate; the occurrence frequency of alignment false alarms caused by factors such as poor process, image acquirer lens grabbing deviation and the like can be reduced to a greater extent, and the equipment utilization rate is effectively improved; the reference and contrast of the alignment value obtained by a bilateral alignment value measurement mode under the condition of the bilateral alignment system device are stronger, and a more reasonable basis is provided for an engineer to judge the abnormity; the probability of confirming the position of the substrate when a worker enters the equipment is reduced to a certain extent, and the possibility of bringing impurities and foreign matters into the equipment when the worker enters the equipment is reduced; the probability that a worker enters equipment to confirm the position of the substrate or manually tries to correct the substrate due to alignment alarm is reduced, so that the risk of substrate breakage caused by the mistake of the worker is reduced to a certain extent, and the cost loss is favorably controlled; the probability of entering the equipment is reduced, and the safety of the working personnel on equipment exception handling is improved to a certain extent.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A marking machine, comprising: the system comprises a carrying platform, a plurality of image acquirers, a judgment module and an alarm module; wherein,
the carrying platform is used for placing a display substrate to be marked;
each image acquirer is used for acquiring an image of each edge of the display substrate, converting the image into corresponding data information and transmitting the data information to the judging module; each image acquirer is positioned right above the carrying platform, and the orthographic projection of each image acquirer on the carrying platform is distributed on the periphery of the display substrate to be marked; the image acquirers corresponding to two opposite sides of the display substrate are the same in number and are in one-to-one correspondence;
the judging module is used for comparing the data information with pre-stored standard data and judging whether the display substrate deviates according to a comparison result, if so, a first control signal is input to the alarm module, and if not, a second control signal is input to the alarm module; the standard data comprises standard values and standard range values corresponding to all edges of the display substrate, and a distance range value corresponding to a distance between two opposite sides of the display substrate;
the alarm module is used for sending out warning prompt when receiving the first control signal and keeping the current state when receiving the second control signal.
2. The marking machine of claim 1, comprising: six of the image obtainers;
the display substrate to be marked comprises two groups of opposite sides, wherein one group of opposite sides corresponds to four image acquirers, and the other group of opposite sides corresponds to two image acquirers.
3. The marking machine of claim 2, wherein the display substrate to be marked comprises a long edge group and a short edge group, wherein each long edge in the long edge group corresponds to two of the image capturers, and each short edge in the short edge group corresponds to one of the image capturers.
4. The marking machine according to any one of claims 1 to 3, wherein the determination module is specifically configured to:
comparing the measured values corresponding to the edges of the display substrate in the data information with the corresponding standard values in the standard data;
when the measured values corresponding to the opposite sides of at least one group of the display substrates exceed the standard range value and the distance calculated by the two measured values corresponding to the opposite sides does not exceed the distance range value compared with the actual distance between the opposite sides, the first control signal is input to the alarm module; otherwise, the second control signal is input to the alarm module.
5. The marking machine of claim 4, further comprising: an automatic motor;
the automatic motor is used for controlling the carrying platform to adjust the placing angle of the display substrate.
6. An alignment method of the marking machine according to any one of claims 1 to 5, comprising:
acquiring images of all edges of a display substrate to be marked and converting the images into corresponding data information;
comparing the data information with pre-stored standard data, and judging whether the display substrate deviates according to a comparison result, if so, outputting a first control signal, otherwise, outputting a second control signal;
and sending out a warning prompt when the first control signal is received, and keeping the current state when the second control signal is received.
7. The alignment method according to claim 6, wherein comparing the data information with pre-stored standard data, and determining whether the display substrate is shifted according to the comparison result, if yes, outputting a first control signal, otherwise, outputting a second control signal, specifically comprising:
comparing the measured values corresponding to the edges of the display substrate in the data information with the standard values and the standard range values corresponding to the standard data;
when the measured values corresponding to at least one group of opposite sides of the display substrate exceed the standard range value and the distance calculated by the two measured values corresponding to the opposite sides does not exceed the distance range value compared with the actual distance between the opposite sides, outputting the first control signal; otherwise, outputting the second control signal.
8. The alignment method according to claim 6 or 7, further comprising:
and after the warning prompt is sent out, determining the reason for the deviation of the display substrate and carrying out corresponding adjustment.
9. The alignment method according to claim 8, further comprising:
placing the display substrate to be marked on the carrying platform, and manually adjusting the placing angle of the display substrate;
and controlling the carrying platform to automatically adjust the placing angle of the display substrate through an automatic motor.
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| CN106945409B (en) | 2018-06-29 |
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