CN113215548A - Automatic control system and execution method for transmission speed of building glass coating sputtering chamber - Google Patents

Automatic control system and execution method for transmission speed of building glass coating sputtering chamber Download PDF

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Publication number
CN113215548A
CN113215548A CN202110326524.XA CN202110326524A CN113215548A CN 113215548 A CN113215548 A CN 113215548A CN 202110326524 A CN202110326524 A CN 202110326524A CN 113215548 A CN113215548 A CN 113215548A
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glass
target position
sputtering chamber
control system
speed
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CN113215548B (en
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余华骏
王艮
赵习军
米永江
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CSG Holding Co Ltd
Wujiang CSG East China Architectural Glass Co Ltd
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CSG Holding Co Ltd
Wujiang CSG East China Architectural Glass Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
    • C23C14/568—Transferring the substrates through a series of coating stations
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/54—Controlling or regulating the coating process
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention relates to an automatic control system and an execution method for the transmission speed of a coating sputtering room for architectural glass, wherein the automatic control system comprises a conveying mechanism, a conveying mechanism controller, a plurality of target positions, a target position power supply, a PLC (programmable logic controller) control system, a field bus and a plurality of target position data storage units, the PLC control system is respectively connected with the conveying mechanism controller and the target position power supply through the field bus, and each target position data storage unit is used for storing the initial position information of the target position, the tail end position information of the target position, the state information of the target position power supply and the speed mark information; the PLC control system is used for calculating real-time position data of the glass in the sputtering chamber and controlling the conveying mechanism to adjust the glass transmission speed of the sputtering chamber according to the calculation result and the power-on state of the target position. The automatic control system for the transmission speed of the coating sputtering chamber of the building glass, provided by the invention, can enable the coating sample to be simpler and more convenient, reduce the sample mixing time and improve the sample mixing efficiency; manual adjustment is not needed, and labor intensity is reduced.

Description

Automatic control system and execution method for transmission speed of building glass coating sputtering chamber
Technical Field
The invention relates to the technical field of glass production, in particular to an automatic control system and an execution method for the transmission speed of a coating sputtering chamber of building glass.
Background
The building glass with vacuum magnetron sputtering coating is a glass product which changes the optical performance of the glass and meets certain specific requirements by coating one or more layers of metal, alloy or metal compound films on the surface of the glass by utilizing the vacuum magnetron sputtering principle. Architectural coated glass is widely used because of its good thermal insulation and optical properties.
In order to achieve specific optical and thermal insulation properties, the film system parameters need to be tuned to achieve specific optical and emissivity parameters, a process also known as profiling. The transmission speed of a sputtering chamber needs to be adjusted to reduce the sample preparation time in the sample preparation process of the coated glass for buildings, an existing production line of the building glass needs operators to pay attention to the position of the glass on the production line, if the speed of the glass is manually adjusted at a non-sputtering position, the glass is accelerated to pass through the position, the glass is manually restored to the preset sputtering speed after the sputtering position is reached, the adjustment process is complicated and is not humanized, and the operators pay attention to the position of the glass in the sputtering chamber all the time and need to manually judge and adjust the transmission speed of the sputtering chamber; the labor intensity of process debugging personnel is high, the production efficiency is low, and errors are easy to occur; the sample preparation time is long, and the sample preparation efficiency is low.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an automatic control system and an execution method for the transmission speed of a coating sputtering chamber of building glass, which can make the coating sample-mixing process simpler and more convenient, reduce the sample-mixing time and improve the sample-mixing efficiency, and the technical scheme is as follows:
the invention provides an automatic control system for the transmission speed of a coating sputtering chamber of architectural glass, which comprises a conveying mechanism for conveying the glass, a conveying mechanism controller electrically connected with the conveying mechanism, a plurality of target positions arranged in the sputtering chamber, and a target position power supply electrically connected with the target positions, and also comprises a PLC control system, a field bus and a plurality of target position data storage units, wherein the target positions, the target position data storage units and the target position power supply correspond to each other one by one, and the PLC control system is respectively connected with the conveying mechanism controller and the target position power supply through the field bus;
each target position data storage unit is used for storing the initial position information of the target position, the tail end position information of the target position, the power supply state information of the target position and the speed mark information;
the conveying mechanism is used for driving the glass to sequentially pass through the initial position and the tail end position of each target position, and the head part of the glass enters the sputtering chamber before the tail part of the glass;
the PLC control system is used for calculating real-time position data of the glass in the sputtering chamber and controlling the conveying mechanism to adjust the transmission speed of the glass in the sputtering chamber according to a calculation result and the starting state of the target power supply, and comprises the following specific steps: when the head of the glass is judged to reach the initial position of a certain target position, if the power supply of the target position is turned on, the PLC control system controls the glass transmission speed of the sputtering chamber to be adjusted to a first speed; if the power supply of the target position is turned off, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a second speed, wherein the first speed is lower than the second speed;
and the conveying mechanism controller is used for receiving a speed adjusting instruction of the PLC control system and controlling the conveying mechanism to adjust the transmission speed of the glass of the sputtering chamber.
Further, the PLC control system is used for judging whether the glass head reaches the initial position of a certain target position according to the real-time position data of the glass, when the glass head reaches the initial position of the target position, the PLC control system adjusts the glass transmission speed of the sputtering chamber according to the starting state of the target position power supply of the target position, if the target position power supply of the target position is started, the speed flag of the target position is set to be 0, and the glass transmission speed of the sputtering chamber is adjusted to be a first speed; if the power supply of the target position is turned off, the speed flag of the target position is set to 1, and the glass transmission speed of the sputtering chamber is adjusted to a second speed, wherein the first speed is lower than the second speed.
Further, the real-time position of the glass head within the sputtering chamber is obtained by the following formula:
Figure BDA0002994867820000021
wherein S is the distance from the glass head to the inlet of the sputtering chamber, the unit is mm, Delta T is 50ms, v is the instantaneous speed of the glass transmission of the sputtering chamberiThe speed sample value for the ith time period.
Furthermore, the driving mechanism comprises a motor and an encoder arranged on the motor, an inlet area is arranged at the inlet of the sputtering chamber, an outlet area is arranged at the outlet of the sputtering chamber,
the glass length is obtained by the following formula:
L＝(PIDout-PIDin)*K
l is the length of the glass, PIDin is the encoder real-time value read when the glass enters the entry zone, PIDout is the encoder real-time value read when the glass leaves the entry zone, K is the coefficient, K is 1.841, with unit 1/100 mm.
Further, the real-time position data of the glass tail in the sputtering chamber is obtained by the following formula:
M＝S-L
wherein M is the distance from the tail of the glass to the inlet of the sputtering chamber, and the unit is mm; s is the distance from the glass head to the inlet of the sputtering chamber and the unit is mm; l is the glass length in mm.
Further, the real-time position data of the glass in the sputtering chamber comprises real-time position data of a glass head part in the sputtering chamber and real-time position data of a glass tail part in the sputtering chamber;
the distance value between the starting position of a certain target position and the inlet of the sputtering chamber is a first fixed value, and the distance value between the tail end position of the target position and the inlet of the sputtering chamber is a second fixed value;
the PLC control system is used for calculating a first distance value between the glass head of the sputtering chamber and the inlet of the sputtering chamber and a second distance value between the glass tail of the sputtering chamber and the inlet of the sputtering chamber, comparing the first distance value with a second fixed value and comparing the second distance value with the first fixed value, and if the first distance value is larger than or equal to the first fixed value and smaller than or equal to the second fixed value, indicating that the glass head reaches the target position; if the second distance value is larger than or equal to the second fixed value, the tail part of the glass leaves the target position.
In another aspect, the invention further provides an execution method based on the automatic transmission speed control system of the architectural glass coating sputtering chamber, which comprises the following steps:
s1, when the glass head enters the sputtering chamber, the PLC control system starts to calculate the real-time position data of the glass in the sputtering chamber;
s2, judging whether the head of the glass reaches the initial position of a certain target position or not by the PLC control system according to the real-time position data of the glass in the sputtering chamber in the step S1, judging whether the target position power supply of the target position is turned on or not if the head of the glass reaches the initial position of the certain target position, and executing a step S3 if the target position power supply of the target position is turned on; if the target position power of the target position is turned off, executing step S4;
s3, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a first speed;
and S4, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a second speed.
Further, in step S3, when the glass head reaches the initial position of a certain target position, if the PLC control system determines that the power of the target position is turned on, the speed flag of the target position is set to 0, and the speed flags of all target positions are logically operated, and if the operation value is 0, the transmission speed of the glass in the sputtering chamber is adjusted to the first speed;
in step S4, when the glass head reaches the start position of a certain target position, if the PLC control system determines that the power of the target position is turned off, the speed flag of the target position is set to 1, and the speed flags of all target positions are logically operated, and if the operation value is 1, the transmission speed of the glass in the sputtering chamber is adjusted to a second speed, where the first speed is lower than the second speed.
Further, in step S2, the calculation flow of the real-time position data of the glass head in the sputtering chamber is as follows:
s21, initializing target position numbers, wherein the target position number of each target position is 0;
s22, the data area pointer points to the target position data unit of the first target position;
s23, the PLC control system calculates the current position data of the glass head in the sputtering chamber;
s24, the PLC control system judges whether the glass head reaches the initial position of the first target position according to the real-time position data of the glass in the step S23, if the glass head reaches the initial position of the target position, the step S25 is executed, and if the glass head does not reach the initial position of the target position, the step S23 is returned;
s25, pointing the data area pointer to the next target position, and updating the target position number of the current target position;
s26, performing the operations of steps S23-S25 on the residual target positions one by one;
and S27, judging whether the tail part of the glass leaves the last target position by the PLC control system, and if so, resetting the target position numbers of all the target positions to be 0.
Further, in step S2, the calculation flow of the real-time position data of the glass tail in the sputtering chamber is as follows:
21. initializing a target position number, wherein the target position number of each target position is 0;
22. the data area pointer points to a target data unit of a first target position;
23. the PLC control system calculates real-time position data of the tail part of the glass in the sputtering chamber;
24. the PLC control system judges whether the tail part of the glass leaves the tail end position of the first target position or not according to the real-time position data of the glass in the step 23, if the tail part of the glass leaves the tail end position of the target position, the step 25 is executed, and if the tail part of the glass does not leave the tail end position of the target position, the step 23 is returned;
25. the data area pointer points to the next target position and updates the target position number of the current target position;
26. the operation of steps 23 to 25 is performed one by one for the remaining target positions;
27. and the PLC control system judges whether the tail part of the glass leaves the last target position, and if so, the target position numbers of all the target positions are reset to be 0.
The technical scheme provided by the invention has the following beneficial effects:
according to the automatic control system for the transmission speed of the coating sputtering chamber of the building glass, provided by the invention, the automatic control system can automatically calculate the real-time position data of the glass in the sputtering chamber and control the transmission mechanism to adjust the transmission speed of the glass in the sputtering chamber according to the calculation result and the starting state of the target position power supply, so that the coating and sample-adjusting process is simpler and more convenient, the sample-adjusting time is reduced, the sample-adjusting efficiency is improved, and the energy and material waste is reduced;
the execution method of the automatic control system for the transmission speed of the architectural glass coating sputtering chamber can greatly reduce program codes and improve the program execution efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a sputtering chamber for coating architectural glass according to an embodiment of the present invention;
FIG. 2 is a top view of an automatic transmission speed control system for a sputtering chamber for coating architectural glass according to an embodiment of the present invention;
FIG. 3 is a flow chart of the adjustment of the transmission speed of the sputtering chamber for glass coating according to the embodiment of the present invention;
FIG. 4 is a flow chart of the calculation of the current position of the glass head according to the embodiment of the present invention;
FIG. 5 is a flow chart of a calculation of a current position of a glass tail according to an embodiment of the present invention;
FIG. 6 is a schematic view showing the structure of the glass provided in the embodiment of the present invention reaching a target site;
FIG. 7 is a schematic view of the configuration of glass as it leaves a target site according to an embodiment of the present invention.
Wherein, 1-glass, 2-conveying roller, 3-motor, 4-encoder, 5-photoelectric switch, 6-inlet area, 7-sputtering chamber, 8-outlet area, and 9-target position.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
In one embodiment of the invention, an automatic transmission speed control system for a coating sputtering chamber of architectural glass is provided, which comprises a conveying mechanism for conveying glass, a conveying mechanism controller electrically connected with the conveying mechanism, a plurality of target positions arranged in the sputtering chamber, and a target position power supply electrically connected with the target positions.
The conveying mechanism comprises a conveying roller 2 for conveying the glass and a driving mechanism for driving the conveying roller to move along the conveying direction, the driving mechanism is preferably a servo motor, and the actual speed of the motor is measured through a servo motor encoder.
The automatic control system further comprises a PLC control system, a field bus and a plurality of target position data storage units, the target positions 9 and the target position data storage units correspond to the target position power supplies one by one, the PLC control system is connected with the conveying mechanism controller and the target position power supplies through the field bus respectively, and the PLC control system can read the running speed of the driving mechanism (motor) and the target position power supply states of all the target positions.
Each target position corresponds to one target position data storage unit, each target position data storage unit is used for storing the initial position information of the target position, the tail end position information of the target position, the power supply state information of the target position and the speed mark information, and the automatic adjustment of the glass transmission speed of the sputtering chamber when multiple pieces of glass pass through each target position can be facilitated.
The conveying mechanism is used for driving the glass to sequentially pass through the initial position and the tail end position of each target position, the head of the glass enters the sputtering chamber before the tail of the glass, each target position has a certain length and is not a point, the head of the glass firstly passes through the initial position of one target position and then sequentially passes through the tail end position of the target position, and namely the initial position of each target position is close to the inlet of the sputtering chamber than the tail end position of the target position.
The sputtering chamber is internally provided with a plurality of target positions which are arranged in sequence, each target position can be numbered, for example, 10 target positions, and the number of each target position is 1-10. For different coated glass, the target positions needing coating are different, for example, if one coated glass needs 5 target positions, the 5 target positions can be arranged in sequence or in a staggered way; if 8 target sites are required for a coated glass, the 8 target sites may be arranged sequentially or alternatively. Before one coated glass is coated, target position power supplies corresponding to a plurality of target positions needing coating can be turned on in advance, and target position power supplies corresponding to other target positions needing coating are not turned off.
And the conveying mechanism controller is used for receiving a speed adjusting instruction of the PLC control system and controlling the conveying mechanism to adjust the transmission speed of the glass of the sputtering chamber.
The PLC control system is used for calculating real-time position data of the glass in the sputtering chamber, and controlling the conveying mechanism to adjust the transmission speed of the glass in the sputtering chamber according to a calculation result and the starting state of the target power supply, and comprises the following specific steps: when the head of the glass is judged to reach the initial position of a certain target position, if the power supply of the target position is turned on, the PLC control system controls the glass transmission speed of the sputtering chamber to be adjusted to a first speed; and if the target position power supply of the target position is turned off, the PLC control system controls the glass transmission speed of the sputtering chamber to be adjusted to a second speed, wherein the first speed is lower than the second speed. The first speed is the film coating speed, and the film coating needs a lower speed to facilitate film coating and improve the film coating precision; the second speed is the non-coating speed, namely the glass passes through at a high speed relatively, so that the sample preparation time is reduced, the coating efficiency is improved, manual adjustment of an operator is not needed, the labor intensity of the operator is reduced, and the operation error is reduced.
The PLC control system judges whether the glass head reaches the initial position of a certain target position according to the real-time position data of the glass, when the glass head reaches the initial position of the target position, the PLC control system adjusts the glass transmission speed of the sputtering chamber according to the starting state of a target position power supply of the target position, if the target position power supply of the target position is judged to be started, the speed mark of the target position is set to be 0, the speed marks of all the target positions are subjected to logical operation, and if the operation value is 0, the glass transmission speed of the sputtering chamber is adjusted to be a first speed; and if the power supply of the target position is judged to be turned off, setting the speed mark of the target position to be 1, carrying out logic operation on the speed marks of all the target positions, and if the operation value is 1, adjusting the transmission speed of the glass in the sputtering chamber to be a second speed, wherein the first speed is lower than the second speed, namely the transmission speed of the glass when the film is required to be coated is lower than the transmission speed of the glass when the film is not coated.
The real-time position data of the glass in the sputtering chamber comprises real-time position data of a glass head part in the sputtering chamber and real-time position data of a glass tail part in the sputtering chamber, when the glass head part reaches the initial position of a certain target position, the PLC control system judges the starting state of a target position power supply of the target position and stores the starting state information of the target position power supply in a data storage area of the target position, if the target position power supply of the target position is started, the speed mark of the target position is set to be 0, and if the target position power supply of the target position is turned off, the speed mark of the target position is set to be 1; when the glass tail leaves the end position of the target position, the speed flag of the target position is set to 1.
The specific implementation mode of the real-time position acquisition of the glass head in the sputtering chamber is as follows: the distance the glass travels in the sputtering chamber within 50ms is calculated using a timer (50ms interval) within a precise PLC control system, and the actual position of the glass is obtained by summing up this distance, see the following equation.
The real-time position of the glass head within the sputtering chamber is obtained by the following formula:
Figure BDA0002994867820000081
wherein S is the distance from the glass head to the inlet of the sputtering chamber and is in mm. The sputtering chamber inlet is assumed as the starting point (indicated by a in fig. 6), which can be understood as the zero point of the coordinate axis; Δ T is 50ms (i.e., 0.05s), v is the instantaneous speed of the sputtering chamber glass drive, v isiThe speed sample value for the ith time period.
Now suppose v1＝10000，v2＝10100，v3＝10050，v49950 in units of 1/100 mm/s;
cumulative value to third time:
s-500 +505+ 502.5-1507.5 units of 1/100mm (10000 × 0.05+10100 × 0.05+10050 × 0.05), and S-15.075 mm, i.e., the distance from the glass head to the inlet of the sputtering chamber is 15.075 mm.
Accumulated value by fourth timing:
s ═ 10000 × 0.05+10100 × 0.05+10050 × 0.05+9950 × 0.05 ═ 500+505+502.5+497.5 ═ 2005 denotes 1/100mm, S ═ 20.05mm, i.e. the distance from the glass head to the sputtering chamber inlet was 20.05 mm.
The real-time position of the glass tail in the sputtering chamber is obtained by the following formula:
M＝S-L
wherein M is the distance from the tail of the glass to the inlet of the sputtering chamber, and the unit is mm; s is the distance from the glass head to the inlet of the sputtering chamber and the unit is mm; l is the glass length in mm.
The installation position of each target position is fixed, the real-time position precision of the glass calculated by the method is high, the real-time position data of the head of the glass in the sputtering chamber and the real-time position data of the tail of the glass in the sputtering chamber can be obtained, whether the glass reaches the target position and leaves the target position can be accurately judged, and the PLC control system can conveniently control the conveying mechanism to adjust the glass transmission speed of the sputtering chamber according to the real-time position data of the glass and the starting state of the power supply of the target position.
The driving mechanism comprises a motor 3 and an encoder 4 arranged on the motor 3, an inlet area 6 is arranged at an inlet of the sputtering chamber 7, an outlet area 8 is arranged at an outlet of the sputtering chamber, and the glass sequentially passes through the inlet area, the sputtering area and the outlet area, which are shown in fig. 1 and 2.
The glass length is obtained in two ways, the first being as follows:
the glass length is obtained by the following formula:
L＝(PIDout-PIDin)*K，
l is the glass length, PIDinEncoder real-time value, PID, read for glass entering the entry zoneoutThe real-time value of the encoder is read when the glass leaves the inlet area, and the real-time value of the encoder has no physical unit but is a variable integer. K is the coefficient, K is 1.841, unit 1/100 mm.
For example, the following steps are carried out: PIDin50000, PIDoutThe glass length L is 200000 ═ 200000-.
The second way is as follows:
the inlet of the sputtering chamber is provided with a sensor, preferably a photoelectric switch 5, and the rising edge and the falling edge of the photoelectric switch are used for calculating the length of the glass.
The specific implementation mode that the PLC control system judges whether the head of the glass reaches the initial position of a certain target position according to the real-time position data of the glass is as follows: referring to fig. 6 and 7, the position of each target in the production line is fixed in the sputtering chamber, that is, the distance value between the starting position of each target and the inlet of the sputtering chamber is a fixed value, and the distance value between the end position of each target and the inlet of the sputtering chamber is a fixed value. The distance between the starting position (e) of a target and the inlet of the sputtering chamber is a first fixed value (Li)Get up) The distance between the end position (f) of the target and the inlet of the sputtering chamber is a second fixed value (Li)Powder)。
The PLC control system is used for calculating a first distance value (S) between a glass head (b) in the sputtering chamber and an inlet of the sputtering chamberHead i) And a second spacing (S) between the glass tail (c) and the chamber inleti tail) And applying the first pitch value (S)Head i) With a second fixed value (Li powder), a second spacing value (S)i tail) Comparing with the first fixed value (Li-on) if the first spacing value (S)Head i) Greater than or equal to a first fixed value (Li) of a current target positionGet up) And is less than or equal to a second fixed value (Li) of a current one of the target sitesPowder) If the target position is reached, the head of the glass is indicated to reach the target position; if the second pitch value (S)i tail) Greater than or equal to a second fixed value (Li)Powder) The tail of the glass leaves the target position.
The sensor at the inlet of the sputtering chamber is used for detecting whether glass enters the sputtering chamber or not and sending a detection result to the PLC control system, and the PLC control system calculates real-time position data of the head of the glass in the sputtering chamber and real-time position data of the tail of the glass in the sputtering chamber according to the detection result of the sensor. The PLC control system starts to calculate the actual position of the head of the glass in the sputtering chamber and simultaneously calculates the actual position of the tail of the glass in the sputtering chamber if the fact that the glass enters the sputtering chamber is detected, and simultaneously records the real-time position data and the length data of the glass entering the sputtering chamber.
The invention also provides an execution method of the automatic transmission speed control system of the architectural glass coating sputtering chamber based on the claims, which is shown in figure 3 and comprises the following steps:
s1, when the glass head enters the sputtering chamber, the PLC control system starts to calculate the real-time position data of the glass in the sputtering chamber;
s2, judging whether the head of the glass reaches the initial position of a certain target position or not by the PLC control system according to the real-time position data of the glass in the sputtering chamber in the step S1, judging whether the target position power supply of the target position is turned on or not if the head of the glass reaches the initial position of the certain target position, and executing a step S3 if the target position power supply of the target position is turned on; if the target position power of the target position is turned off, executing step S4;
wherein a certain target position is resolved as follows: for example, when a target position is reached, the real-time position data of the glass in the sputtering chamber in the step S1 is only required to be compared with the target position data, and the real-time position data is not required to be compared with the rest target position data, namely, only the position data of the target position close to the target position, so that the program is simplified, and the calculation time is reduced.
S3, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a first speed;
and S4, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a second speed.
In step S3, when the head of the glass is judged to reach the initial position of a target position, if the PLC control system judges that the power supply of the target position is turned on, the speed flag of the target position is set to 0, and the speed flags of all target positions are logically operated, and if the operation value is 0, the transmission speed of the glass in the sputtering chamber is adjusted to the first speed.
In step S4, when the glass head reaches the start position of a certain target position, if the PLC control system determines that the power of the target position is turned off, the speed flag of the target position is set to 1, and the speed flags of all target positions are logically operated, and if the operation value is 1, the transmission speed of the glass in the sputtering chamber is adjusted to a second speed, where the first speed is lower than the second speed.
In step S2, the calculation flow of the real-time position data of the glass head in the sputtering chamber is as follows, see fig. 4:
s21, initializing target position numbers, wherein the target position number of each target position is 0;
s22, pointing the data area pointer to the target position data unit of the first target position, wherein the data area pointer is a program-specific term;
s23, the PLC control system calculates the current position data of the glass head in the sputtering chamber;
s24, the PLC control system judges whether the glass head reaches the initial position of the first target position according to the real-time position data of the glass in the step S23, if the glass head reaches the initial position of the target position, the step S25 is executed, and if the glass head does not reach the initial position of the target position, the step S23 is returned;
s25, the data area pointer points to the next target position, and the target position number of the current target position is updated, if the initial target position number of the first target position is 0, the initial target position number of the first target position is 1 after updating;
s26, performing the operations of steps S23-S25 on the residual target positions one by one;
and S27, judging whether the tail part of the glass leaves the last target position by the PLC control system, and if so, resetting the target position numbers of all the target positions to be 0.
The method accesses the target position data unit (target position data area) in a pointer mode, greatly reduces program codes and improves program execution efficiency. When the PLC control system judges whether the head of the glass reaches the initial position of a certain target position according to the real-time position data of the glass, only the head position data of the glass is required to be compared with the initial position (a first fixed value) and the tail end position (a second fixed value) of the target position pointed by the data area pointer, the head position data of the glass is not required to be compared with the initial positions (the first fixed value) and the tail end position (the second fixed value) of all the target positions, program codes can be greatly reduced, and the program execution efficiency is improved.
Similarly, in step S2, the calculation flow of the real-time position of the glass tail in the sputtering chamber is as follows, see fig. 5:
21. initializing a target position number, wherein the target position number of each target position is 0;
22. a data field pointer pointing to a target data cell of the first target location, wherein the data field pointer is a program specific term;
23. the PLC control system calculates real-time position data of the tail part of the glass in the sputtering chamber;
24. the PLC control system judges whether the tail part of the glass leaves the tail end position of the first target position or not according to the real-time position data of the glass in the step 23, if the tail part of the glass leaves the tail end position of the target position, the step 25 is executed, and if the tail part of the glass does not leave the tail end position of the target position, the step 23 is returned;
25. the data area pointer points to the next target position and updates the target position number of the current target position;
26. the operation of steps 23 to 25 is performed one by one for the remaining target positions;
27. and the PLC control system judges whether the tail part of the glass leaves the last target position, and if so, the target position numbers of all the target positions are reset to be 0.
The method accesses the target position data unit (namely the target position data area) in a pointer mode, greatly reduces program codes and improves program execution efficiency. When the PLC control system judges whether the head of the glass reaches the initial position of a certain target position according to the tail position data of the glass, only the tail position data of the glass needs to be compared with the initial position (a first fixed value) and the tail end position (a second fixed value) of the target position pointed by the data area pointer, the tail position data of the glass does not need to be compared with the initial positions (the first fixed value) and the tail end positions (the second fixed value) of all the target positions, program codes can be greatly reduced, and the program execution efficiency is improved.
According to the automatic control system for the transmission speed of the coating sputtering chamber of the building glass, provided by the invention, the automatic control system can automatically calculate the real-time position data of the glass in the sputtering chamber, and control the transmission mechanism to adjust the transmission speed of the glass in the sputtering chamber according to the calculation result and the starting state of the target power supply, and automatically judge whether the speed needs to be adjusted or not and automatically adjust the transmission speed of the sputtering chamber, so that the manual adjustment is not needed, the coating sample adjusting process is simpler and more convenient, the sample adjusting time is shortened (sufficient time is provided for other subsequent production), the sample adjusting efficiency and the production efficiency are improved, and the energy and material waste is reduced; multiple pieces of glass can be entered during sample preparation, and the system can automatically adjust the transmission speed of the sputtering chamber for each piece of glass. The execution method of the automatic control system for the transmission speed of the architectural glass coating sputtering chamber can greatly reduce program codes and improve the program execution efficiency.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. An automatic control system for transmission speed of a coating sputtering chamber for architectural glass comprises a conveying mechanism for conveying glass, a conveying mechanism controller electrically connected with the conveying mechanism, a plurality of target positions arranged in the sputtering chamber, and a target position power supply electrically connected with the target positions, and is characterized by further comprising a PLC control system, a field bus and a plurality of target position data storage units, wherein the target positions, the target position data storage units and the target position power supply correspond to one another one by one, and the PLC control system is respectively connected with the conveying mechanism controller and the target position power supply through the field bus;
each target position data storage unit is used for storing the initial position information of the target position, the tail end position information of the target position, the power supply state information of the target position and the speed mark information;
the conveying mechanism is used for driving the glass to sequentially pass through the initial position and the tail end position of each target position, and the head part of the glass enters the sputtering chamber before the tail part of the glass;
the PLC control system is used for calculating real-time position data of the glass in the sputtering chamber and controlling the conveying mechanism to adjust the transmission speed of the glass in the sputtering chamber according to a calculation result and the starting state of the target power supply, and comprises the following specific steps: when the head of the glass is judged to reach the initial position of a certain target position, if the power supply of the target position is turned on, the PLC control system controls the glass transmission speed of the sputtering chamber to be adjusted to a first speed; if the power supply of the target position is turned off, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a second speed, wherein the first speed is lower than the second speed;
and the conveying mechanism controller is used for receiving a speed adjusting instruction of the PLC control system and controlling the conveying mechanism to adjust the transmission speed of the glass of the sputtering chamber.
2. The automatic transmission speed control system for the architectural glass coating sputtering chamber according to claim 1, wherein the PLC control system is used for judging whether the glass head reaches the initial position of a certain target position according to the real-time position data of the glass, when the glass head reaches the initial position of the target position, the PLC control system adjusts the transmission speed of the glass in the sputtering chamber according to the starting state of the target position power supply of the target position, if the target position power supply of the target position is started, the speed flag of the target position is set to be 0, and the transmission speed of the glass in the sputtering chamber is adjusted to be a first speed; if the power supply of the target position is turned off, the speed flag of the target position is set to 1, and the glass transmission speed of the sputtering chamber is adjusted to a second speed, wherein the first speed is lower than the second speed.
3. The automatic control system for transmission speed of architectural glass coating sputtering chamber according to claim 1, wherein the real-time position of the glass head in the sputtering chamber is obtained by the following formula:
Figure FDA0002994867810000021
wherein S is the distance from the glass head to the inlet of the sputtering chamber and the unit is mm; delta T is 50ms, v is the instantaneous speed of the glass drive of the sputtering chamber, viThe speed sample value for the ith time period.
4. The automatic transmission speed control system for the architectural glass coating sputtering chamber according to claim 1, wherein the driving mechanism comprises a motor and an encoder arranged on the motor, an inlet area is arranged at the inlet of the sputtering chamber, an outlet area is arranged at the outlet of the sputtering chamber,
the glass length is obtained by the following formula:
L＝(PIDout-PIDin)*K
l is the glass length, PIDinEncoder real-time value, PID, read for glass entering the entry zoneoutThe encoder real-time values read as the glass exited the entrance zone, K is a coefficient, K is 1.841 in units of 1/100 mm.
5. The automatic control system for transmission speed of architectural glass coating sputtering chamber according to claim 4, wherein the real-time position data of the glass tail in the sputtering chamber is obtained by the following formula:
M＝S-L
wherein M is the distance from the tail of the glass to the inlet of the sputtering chamber, and the unit is mm; s is the distance from the glass head to the inlet of the sputtering chamber and the unit is mm; l is the glass length in mm.
6. The automatic transmission speed control system for the architectural glass coating sputtering chamber according to claim 1, wherein the real-time position data of the glass in the sputtering chamber comprises real-time position data of a glass head in the sputtering chamber and real-time position data of a glass tail in the sputtering chamber;
the distance value between the starting position of a certain target position and the inlet of the sputtering chamber is a first fixed value, and the distance value between the tail end position of the target position and the inlet of the sputtering chamber is a second fixed value;
the PLC control system is used for calculating a first distance value between the glass head of the sputtering chamber and the inlet of the sputtering chamber and a second distance value between the glass tail of the sputtering chamber and the inlet of the sputtering chamber, comparing the first distance value with a second fixed value and comparing the second distance value with the first fixed value, and if the first distance value is larger than or equal to the first fixed value and smaller than or equal to the second fixed value, indicating that the glass head reaches the target position; if the second distance value is larger than or equal to the second fixed value, the tail part of the glass leaves the target position.
7. An execution method of the automatic transmission speed control system of the architectural glass coating sputtering chamber based on any one of claims 1 to 6, which is characterized by comprising the following steps:
s1, when the glass head enters the sputtering chamber, the PLC control system starts to calculate the real-time position data of the glass in the sputtering chamber;
s2, judging whether the head of the glass reaches the initial position of a certain target position according to the real-time position data of the glass in the sputtering chamber obtained in the step S1 by the PLC control system, judging whether the target position power supply of the target position is turned on if the head of the glass reaches the initial position of the target position, and executing a step S3 if the target position power supply of the target position is turned on; if the target position power of the target position is turned off, executing step S4;
s3, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a first speed;
and S4, the PLC control system controls the transmission speed of the glass of the sputtering chamber to be adjusted to a second speed.
8. The execution method of the automatic transmission speed control system of the architectural glass coating sputtering chamber according to claim 7, wherein,
in step S3, when the glass head reaches the initial position of a certain target position, if the PLC control system judges that the power supply of the target position is turned on, the speed mark of the target position is set to be 0, the speed marks of all the target positions are logically operated, and if the operation value is 0, the transmission speed of the glass in the sputtering chamber is adjusted to be a first speed;
in step S4, when the glass head reaches the start position of a certain target position, if the PLC control system determines that the power of the target position is turned off, the speed flag of the target position is set to 1, and the speed flags of all target positions are logically operated, and if the operation value is 1, the transmission speed of the glass in the sputtering chamber is adjusted to a second speed, where the first speed is lower than the second speed.
9. The method for implementing the automatic transmission speed control system for the architectural glass coating sputtering chamber according to claim 7, wherein in step S2, the calculation flow of the real-time position data of the glass head in the sputtering chamber is as follows:
s21, initializing target position numbers, wherein the target position number of each target position is 0;
s22, the data area pointer points to the target position data unit of the first target position;
s23, the PLC control system calculates the current position data of the glass head in the sputtering chamber;
s24, the PLC control system judges whether the glass head reaches the initial position of the first target position according to the real-time position data of the glass in the step S23, if the glass head reaches the initial position of the target position, the step S25 is executed, and if the glass head does not reach the initial position of the target position, the step S23 is returned;
s25, pointing the data area pointer to the next target position, and updating the target position number of the current target position;
s26, performing the operations of steps S23-S25 on the residual target positions one by one;
and S27, judging whether the tail part of the glass leaves the last target position by the PLC control system, and if so, resetting the target position numbers of all the target positions to be 0.
10. The execution method of the automatic transmission speed control system of the architectural glass coating sputtering chamber according to claim 7, wherein,
in step S2, the calculation procedure of the real-time position data of the glass tail in the sputtering chamber is as follows:
21. initializing a target position number, wherein the target position number of each target position is 0;
22. the data area pointer points to a target data unit of a first target position;
23. the PLC control system calculates real-time position data of the tail part of the glass in the sputtering chamber;
24. the PLC control system judges whether the tail part of the glass leaves the tail end position of the first target position or not according to the real-time position data of the glass in the step 23, if the tail part of the glass leaves the tail end position of the target position, the step 25 is executed, and if the tail part of the glass does not leave the tail end position of the target position, the step 23 is returned;
25. the data area pointer points to the next target position and updates the target position number of the current target position;
26. the operation of steps 23 to 25 is performed one by one for the remaining target positions;
27. and the PLC control system judges whether the tail part of the glass leaves the last target position, and if so, the target position numbers of all the target positions are reset to be 0.
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