CN111257345B - Full-automatic bar code printing quality detector and detection method - Google Patents
Full-automatic bar code printing quality detector and detection method Download PDFInfo
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- CN111257345B CN111257345B CN202010079338.6A CN202010079338A CN111257345B CN 111257345 B CN111257345 B CN 111257345B CN 202010079338 A CN202010079338 A CN 202010079338A CN 111257345 B CN111257345 B CN 111257345B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0691—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of objects while moving
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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Abstract
The invention discloses a full-automatic bar code printing quality detector and a detection method, wherein the detector comprises a computer and a bar code detector host, the bar code detector host comprises a workbench capable of moving transversely and a probe seat which is positioned above the workbench and can move longitudinally, the workbench is connected with a first driving motor through a first transmission mechanism, the probe seat is connected with a second driving motor through a second transmission mechanism, a laser tube and a photoelectric amplifier are fixedly arranged on the probe seat, and a light beam emitted by the laser tube is placed on a bar code on the workbench to be reflected and then irradiated on the photoelectric amplifier. The invention has the beneficial effects that: the dimension measurement and N times of detection of the bar code can be automatically realized, the scanning paths are uniformly and equally spaced, the overall printing quality of the detected bar code is detected and evaluated more comprehensively and accurately, the human intervention is eliminated, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of bar code detection, in particular to a full-automatic bar code printing quality detector and a detection method.
Background
The bar code technology solves the problem of data input in the application process of a computer by the characteristics of reliability, rapidness, economy, practicability and the like, and the bar codes become common languages in international trade and identity cards of international commodities.
The bar code is a group of bar-space patterns with different widths and alternate black and white, and bears information by using the change of bar and space dimensions and the difference of bar and space optical characteristics, and realizes automatic data acquisition and automatic information identification together with a computer. Therefore, the bar, space geometric dimension and optical characteristic are important parameters for ensuring the correct reading of the bar code, and the bar code detector is a measuring instrument for detecting the bar, space geometric dimension and optical characteristic of the bar code printed matter.
The printing quality of the bar code is the basis of bar code application, and the establishment and execution of the bar code detection standard are very important to the international standardization organization and the national standardization organizations. There are two kinds of current bar code detector execution standards, one is based on EAN specifications established earlier by the international article coding association, and the absolute deviation of bar code bar and empty size values, actual measurement value of reflectivity and PCS value are given from the perspective of physical quantity measurement, which is the "traditional detection standard"; the detection standard which is uniformly executed internationally at present comprehensively considers single indexes of bar code printing quality from the reading angle of bar codes, verifies the printing quality of bar code printed products by comprehensive grades, is a 'grading detection standard', and is based on the actual condition of bar code scanning, not the isolated error size of bar and empty sizes of detected bar codes and the absolute numerical value of reflectivity, comprehensively considers the reflectivity of bar code symbols on various substrates and the measured values of bar empty widths, specifically establishes a set of symbol specifications, specifies a decoding algorithm, and finally expresses the printing quality of the bar code symbols in the modes of A, B, C, D, E and F grades. The Chinese commodity bar code and bar code symbol (bar code) printing quality detection has adopted the comprehensive judgment standard of 'grading detection standard'.
At present, the bar code detectors at home and abroad finish N times of detection on bar code symbols by manually moving the bar code detectors or the bar code symbols, and have the advantages of uneven scanning path intervals, low detection efficiency, easy manual intervention, incapability of comprehensively and accurately evaluating the overall printing quality of the detected bar code symbols, low automation degree and low detection efficiency.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a full-automatic bar code printing quality detector which completely overcomes the defects that the prior domestic and foreign bar code detectors finish N times of detection of bar code symbols by manually moving the bar code detectors or the bar code symbols, the scanning path intervals are uneven, the detection efficiency is low, the manual intervention is easy, the overall printing quality of the detected bar code symbols cannot be comprehensively and accurately evaluated, and the like, can automatically realize N times of detection of the bar codes, the scanning path intervals are uniform and equal, the overall printing quality of the detected bar codes is more comprehensively and accurately detected and evaluated, the manual intervention is eliminated, and the detection efficiency is improved.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the utility model provides a full-automatic bar code printing quality detector, includes computer and bar code detector host computer, the bar code detector host computer includes but lateral shifting's workstation and is located but workstation top and longitudinal movement's probe holder, the workstation passes through first drive mechanism and connects first driving motor, the probe holder passes through second drive mechanism and connects second driving motor, laser pipe and photoelectric amplifier have set firmly on the probe holder, the light beam that the laser pipe sent is placed shine behind the bar code reflection on the workstation photoelectric amplifier is last.
Further, the bar code detector host computer still includes the bottom plate, the top of bottom plate is fixedly connected with transverse guide and longitudinal rail support respectively, transverse slide rail sliding connection has transverse slider, transverse slider's top with the bottom fixed connection of workstation, fixedly connected with longitudinal rail on the longitudinal rail support, longitudinal rail sliding connection has longitudinal slider, the bottom fixed connection probe seat's of longitudinal slider top.
Furthermore, a grating reading head is fixedly connected to the longitudinal sliding block, and a scale grating corresponding to the grating reading head is fixedly connected to the longitudinal guide rail.
Further, the first transmission mechanism and the second transmission mechanism are both ball screw and nut pairs.
Further, the ball nut of the first transmission mechanism is fixedly connected with a nut support, and the top of the nut support is fixedly connected with the bottom of the workbench.
Further, the first driving motor is a stepping motor, and the second driving motor is a direct current motor.
Furthermore, a unthreaded hole adjusting handle is arranged on the laser tube.
Furthermore, the bottom plate is also detachably connected with a dust cover, and the workbench and the probe seat are both positioned in the dust cover.
The invention also provides a method for detecting the printing quality of the bar code, which comprises the following steps:
s1, a computer divides a detection zone of a bar code into N detection areas according to the bar height of the bar code placed on a workbench;
s2, a probe seat in a bar code detector host longitudinally moves under the control of the computer, a laser tube synchronously moving along with the probe seat emits light beams under the control of the computer, the light beams are reflected by a single detection area and then irradiate a photoelectric amplifier synchronously moving along with the probe seat, and the photoelectric amplifier converts optical signals into electric signals and then transmits the electric signals to the computer;
s3, the computer calculates the reflectivity value of each bar or each hollow in the bar code according to the electric signal, draws a reflectivity curve, and obtains the quality grade of the bar code through the reflectivity curve;
s4, the workbench in the bar code detector host moves transversely under the control of the computer until the light beam emitted by the laser tube irradiates the next detection area;
and S5, repeating S2-S3 until all the N detection areas are detected, obtaining N quality grades, and calculating the average value of the N quality grades by the computer to serve as the final quality grade of the bar code.
Further, in S2, the grating reading head moving synchronously with the probe holder measures the fixed scale grating, converts the measured length signal into an electric pulse signal, and transmits the electric pulse signal to the computer, thereby providing a basis for the computer to calculate the size value of the barcode.
The invention has the beneficial effects that: the size measurement and N detection of the bar code can be automatically realized, the intervals of scanning paths are uniform and equal, the overall printing quality of the detected bar code is more comprehensively and accurately detected and evaluated, the human intervention is eliminated, the detection efficiency is improved, and the defects that the existing domestic and foreign bar code detectors finish the N detection of bar code symbols by manually moving the bar code detectors or the bar code symbols, the intervals of the scanning paths are uneven, the detection efficiency is low, the human intervention is easy, the overall printing quality of the detected bar code symbols cannot be comprehensively and accurately evaluated, and the like are completely overcome; a plurality of bar code symbols can be placed on the workbench for detection at the same time and the detection result of each bar code symbol to be detected can be respectively given, thus thoroughly changing the detection mode that bar code detectors produced at home and abroad can only detect one bar code symbol at a time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described 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 without creative efforts.
FIG. 1 is a schematic diagram of a fully automatic bar code printing quality detector according to an embodiment of the present invention;
FIG. 2 is a front view of a host of a bar code detector according to an embodiment of the invention;
FIG. 3 is a side view of a barcode detector host according to an embodiment of the present invention;
FIG. 4 is a top view of a bar code detector host according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of an electrical enclosure according to an embodiment of the present invention;
fig. 6 is a logic diagram of barcode printing quality detection software according to an embodiment of the present invention.
In the figure:
1. a computer; 2. a printer; 3. a bar code detector host; 4. a ground pin adjusting screw; 5. a nut bracket; 6. a first drive motor; 7. a dust cover; 8. a base plate; 9. an electrical box bottom plate; 10. an electrical box; 11. a longitudinal rail bracket; 12. a transverse slide rail; 13. a work table; 14. a unthreaded hole adjusting handle; 15. a working surface; 16. a longitudinal guide rail; 17. a longitudinal slide block; 18. a coupling; 19. a second drive motor; 20. a laser tube; 21. a grating reading head; 22. a scale grating; 23. a probe base; 24. a power outlet; 25. and a USB interface.
Detailed Description
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 from the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
As shown in fig. 1 to 6, the fully automatic barcode printing quality detector according to the embodiment of the present invention includes a computer 1 and a barcode detector main unit 3, where the barcode detector main unit 3 includes a workbench 13 capable of moving transversely and a probe holder 23 located above the workbench 13 and capable of moving longitudinally, the workbench 13 is connected to a first driving motor 6 through a first transmission mechanism, the probe holder 23 is connected to a second driving motor 19 through a second transmission mechanism, a laser tube 20 and a photoelectric amplifier are fixed on the probe holder 23, and a light beam emitted by the laser tube 20 is reflected by a barcode on the workbench 13 and then irradiates the photoelectric amplifier.
In a specific embodiment of the present invention, the barcode detector main unit 3 further includes a bottom plate 8, the top of the bottom plate 8 is fixedly connected with a transverse guide rail 12 and a longitudinal guide rail bracket 11, respectively, the transverse slide rail 12 is connected with a transverse slide block in a sliding manner, the top of the transverse slide block is fixedly connected with the bottom of the workbench 13, the longitudinal guide rail bracket 11 is fixedly connected with a longitudinal guide rail 16, the longitudinal guide rail 16 is connected with a longitudinal slide block 17 in a sliding manner, and the bottom of the longitudinal slide block 17 is fixedly connected with the top of the probe holder 23.
In an embodiment of the present invention, a grating reading head 21 is further fixedly connected to the longitudinal sliding block 17, and a scale grating 22 corresponding to the grating reading head 21 is fixedly connected to the longitudinal guiding rail 16.
In a specific embodiment of the present invention, the first transmission mechanism and the second transmission mechanism are both ball screw and nut pairs.
In an embodiment of the present invention, the ball nut of the first transmission mechanism is fixedly connected with a nut bracket 5, and the top of the nut bracket 5 is fixedly connected with the bottom of the workbench 13.
In one embodiment of the present invention, the first driving motor 6 is a stepping motor, and the second driving motor 19 is a dc motor.
In one embodiment of the present invention, the laser tube 20 is provided with a light hole adjusting handle 14.
In an embodiment of the present invention, a dust cover 7 is further detachably connected to the bottom plate 8, and the worktable 13 and the probe holder 23 are both located inside the dust cover 7.
The invention also provides a method for detecting the printing quality of the bar code, which comprises the following steps:
s1, a computer 1 equally divides a detection zone of a bar code into N detection areas according to the bar height of the bar code placed on a workbench 13;
s2, a probe seat 23 in a bar code detector host 3 longitudinally moves under the control of the computer 1, and meanwhile, a laser tube 20 synchronously moving with the probe seat 23 emits light beams under the control of the computer 1, the light beams are reflected by a single detection area and then irradiate a photoelectric amplifier synchronously moving with the probe seat 23, and the photoelectric amplifier converts optical signals into electric signals and then transmits the electric signals to the computer 1;
s3, the computer 1 calculates the reflectivity value of each bar or each empty bar in the bar code according to the electric signal, draws a reflectivity curve, and obtains the quality grade of the bar code through the reflectivity curve;
s4, the workbench 13 in the bar code detector host 3 transversely moves under the control of the computer 1 until the light beam emitted by the laser tube 20 irradiates the next detection area;
s5, repeating S2-S3 until all the N detection areas are detected, obtaining N quality grades, and calculating the average value of the N quality grades by the computer 1 to serve as the final quality grade of the bar code.
In an embodiment of the present invention, in S2, the grating reading head 21 moving synchronously with the probe holder 23 measures the fixed scale grating 22, converts the measured length signal into an electrical pulse signal, and transmits the electrical pulse signal to the computer 1, thereby providing a basis for the computer 1 to calculate the dimension value of the barcode.
In order to facilitate understanding of the above-described embodiments of the present invention, the following detailed description of the embodiments of the present invention is provided by way of specific usage.
The full-automatic bar code printing quality detector comprises a computer 1, a printer 2 and a bar code detector host 3, wherein the computer 1 is respectively connected with the printer 2 and the bar code detector host 3.
The bar code detector host 3 comprises a dust cover 7, the dust cover 7 is fixedly connected with a bottom plate 8, the bottom plate 8 is respectively fixedly connected with a foundation adjusting screw 4, an electric appliance box bottom plate 9, a first driving motor 6, a longitudinal guide rail bracket 11 and a transverse guide rail 12, the transverse guide rail 12 is connected with a transverse sliding block in a sliding manner, the transverse sliding block is fixedly connected with a workbench 13, the workbench 13 is fixedly connected with a nut bracket 5, the nut bracket 5 is connected with an output shaft of the first driving motor 6 through a ball screw nut pair, the first driving motor 6 is a stepping motor, the electric appliance box bottom plate 9 is fixedly connected with an electric appliance box 10, the longitudinal guide rail bracket 11 is fixedly connected with a longitudinal guide rail 16, the longitudinal guide rail 16 is connected with a longitudinal sliding block 17 in a sliding manner, the longitudinal sliding block 17 is connected with a coupler 18 through a ball screw nut pair, the coupler 18 is fixedly connected with an output shaft of a second driving motor 19, the second driving motor 19 is a direct current motor, a scale grating 22 is fixedly connected with the longitudinal sliding block 17, the longitudinal sliding block 17 is respectively fixedly connected with a grating reading head 21 and a probe seat 23, the probe seat 23 is fixedly connected with a laser tube 20, a laser tube 20 is provided with a light hole adjusting handle 14, a photoelectric reading amplifier 21 and an electric appliance box amplifier 20 are respectively connected with the reading tube 20; the bottom plate 9 of the electrical appliance box is fixedly connected with the electrical appliance box 10. The top of the working table 13 is a working surface 15, the working surface 15 is used for placing a bar code (namely a bar code symbol), and during detection, the laser tube 20 forms a light beam through the measuring light hole and irradiates the bar code symbol (printed on the surface of a printed product) placed on the working surface 15.
The electrical appliance box 10 comprises a main power supply, a core board and an interface board, wherein the main power supply is respectively connected with a power socket 24, the core board and the interface board, the interface board is respectively connected with a direct current motor, a laser tube limit sensor (namely a scanning head limit position groove type optocoupler), a grating reading head 21, a laser tube 20, a photoelectric amplifier, a workbench limit sensor (namely a workbench limit position groove type optocoupler) and a stepping motor, a stepping motor power supply is respectively connected with the stepping motor and the power socket 24, and the core board is connected with a computer through a USB interface 25. The model of the main Power supply is Power-317, the model of the Core board is Core-841, the model of the interface board is Driver-548, the models of the laser tube limit sensor and the workbench limit sensor are ITR8402, the model of the grating reading head 21 is RGH24D50F00A, and the model of the photoelectric amplifier is GD81 PIN-FET.
The photo amplifier may also be referred to as a photosensor, or the like.
The electrical box 10 adopts a modular design and has the functions of data acquisition, function selection, control and the like, and the electrical box 10 is connected with the computer 1 into a whole through the USB port 25 and a cable; the computer 1 is internally provided with bar code printing quality detection software which adopts a Chinese interface, can perform function selection, data transmission and control operation through a USB port 25, and is simple, convenient, popular and easy to understand; the bar code printing quality detection software can automatically distinguish the code system of the detected bar code symbol; can detect various code systems such as commodity bar codes (EAN-13, EAN-8, UPC-A, UPC-E), cross two five, logistics bar code (ITF), 128, three nine, and bank bar (CODABAR); the bar code printing quality detection software provides bar code grading detection, traditional detection and tolerance measurement methods, and can display the detection result of printed bar code symbols; the detection of a single bar code or a plurality of bar codes can be selected; a detection path of whole-course scanning or nearby turning back can be selected; the full-automatic bar code printing quality detector can select single or N times (N is less than or equal to 10) scanning, automatically measures the bar height (also called as bar width) of the tested bar code symbol after selecting N times of scanning, automatically equally divides the detection band of the tested bar code into N detection areas according to the regulation of GB/T18348 'inspection of commodity bar code symbol printing quality', and sequentially detects each detection area to obtain N quality grades of the tested bar code symbol and calculate the average value; then, a reflectivity curve (namely a scanning path reflectivity curve) of the bar code is drawn on a display screen of the computer 1 in real time, and the size of a display graph of the curve can be adjusted; the bar code printing quality detection software can select various types of printers 2 to print detection results under various detection methods; the bar code printing quality detection software can detect the reflectivity of any position at fixed points.
The size value of the bar code comprises the length of the bar code and the height of the bar code, the length of the bar code can be obtained by measuring the longitudinal displacement of a probe seat 23 through a grating reading head 21 and a scale grating 22, the height of the bar code can be obtained by matching a stepping motor, a laser tube 20 and a photoelectric amplifier, concretely, the photoelectric amplifier detects an optical signal, the light beam emitted by the laser tube 20 irradiates on the bar code, the photoelectric amplifier cannot detect the optical signal, the light beam emitted by the laser tube 20 does not irradiate on the bar code, according to the principle, the worktable 13 is controlled to transversely move through the stepping motor, the photoelectric amplifier cannot detect the optical signal in the moving process, then detects the optical signal, and finally cannot detect the optical signal, the pulse number required for driving the stepping motor to act in the process of detecting the optical signal is obtained, the transverse moving distance of the worktable 13 is calculated through the pulse number, and further the height of the bar code is obtained.
When the device is used, the computer 1 transmits a control command to a core board of an electric appliance box through the USB port 25, the core board drives a stepping motor to move through an interface board and drives a workbench to move transversely, a light beam is emitted through the laser tube 20, then the bar height of a bar code is automatically measured in the transverse moving process of the workbench, the computer 1 divides a detection band of the bar code into N detection areas according to the bar height and the preset measurement times N and the regulation of GB/T18348 inspection of the printing quality of commodity bar code symbols, and detects each detection area in sequence, the detection process is that the computer transmits the control command to the core board of the electric appliance box through the USB port 25, the core board drives a direct current motor to move through the interface board and drives the longitudinal sliding block 17 to move longitudinally, and the grating reading head 21, the laser tube 20, the probe seat 23 and the photoelectric amplifier move synchronously along with the longitudinal sliding block 17, the light beam formed by the laser tube 20 through the measuring light hole scans each bar and each empty of the bar code symbol on the working face 15 in turn, after the light beam is reflected by the bar code symbol, the reflected light is received by the photoelectric amplifier in the probe seat 23 and converted into electric signal, at the same time, the grating reading head 21 measures the scale grating 22, and converts the measured length signal into electric pulse signal, the two signals (i.e. the electric signal and the electric pulse signal) are sent into the core plate through the interface plate, processed by the core plate and sent into the computer 1 through the USB port 25, the computer 1 calculates the reflectivity value, the dimension value and other parameter values related to the bar code symbol printing quality of each bar or each empty according to the data of the two signals, draws the reflectivity curve of the scanning path on the display screen of the computer 1 in due to the country and international inspection standards of the bar code symbol printing, and calculating the analysis and evaluation result of the printing quality of the tested bar code symbol.
In conclusion, by means of the technical scheme, the dimension measurement and N times of detection of the bar code can be automatically realized, the scanning path intervals are uniform and equal, the overall printing quality of the detected bar code is detected and evaluated more comprehensively and accurately, the human intervention is eliminated, the detection efficiency is improved, and the defects that the existing domestic and foreign bar code detectors finish N times of detection of bar code symbols by manually moving the bar code detectors or the bar code symbols, the scanning path intervals are uneven, the detection efficiency is low, the human intervention is easy, the overall printing quality of the detected bar code symbols cannot be comprehensively and accurately evaluated, and the like are completely overcome; a plurality of bar code symbols can be placed on the workbench for detection at the same time, and the detection result of each detected bar code symbol can be respectively given, so that the detection mode that the bar code detectors produced at home and abroad can only detect one bar code symbol at a time is thoroughly changed.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The full-automatic bar code printing quality detector is characterized by comprising a computer (1) and a bar code detector host (3), wherein the bar code detector host (3) comprises a workbench (13) capable of moving transversely and a probe seat (23) capable of moving longitudinally above the workbench (13), the workbench (13) is connected with a first driving motor (6) through a first transmission mechanism, the probe seat (23) is connected with a second driving motor (19) through a second transmission mechanism, a laser tube (20) and a photoelectric amplifier are fixedly arranged on the probe seat (23), a light beam emitted by the laser tube (20) is placed on the photoelectric amplifier after being reflected by a bar code on the workbench (13) and then irradiates the photoelectric amplifier, the detector host (3) further comprises a bottom plate (8), the top of the bottom plate (8) is fixedly connected with a transverse guide rail (12) and a longitudinal guide rail support (11) respectively, the transverse guide rail (12) is connected with a transverse slider in a sliding manner, the top of the transverse slider is fixedly connected with the bottom of the workbench (13), the longitudinal guide rail support (11) is fixedly connected with a longitudinal guide rail (16), and the top of a grating head (17) is connected with a grating head (17) which is connected with a grating head (17), the grating reading device is characterized in that a scale grating (22) corresponding to the grating reading head (21) is fixedly connected to the longitudinal guide rail (16), the first transmission mechanism and the second transmission mechanism are ball screw nut pairs, a ball nut of the first transmission mechanism is fixedly connected with a nut support (5), the top of the nut support (5) is fixedly connected with the bottom of the workbench (13), the first driving motor (6) is a stepping motor, the second driving motor (19) is a direct current motor, the electrical box (10) comprises a main power source, a core plate and an interface plate, the main power source is respectively connected with a power socket (24), the core plate and the interface plate, the interface plate is respectively connected with the direct current motor, a laser tube limit sensor, the grating reading head (21), the laser tube (20), the photoelectric amplifier, a workbench limit sensor and the stepping motor, the stepping motor power source is respectively connected with the stepping motor and the power socket (24), and the core plate is connected with the computer (1) through a USB interface (25).
2. The automatic barcode printing quality detector according to claim 1, wherein the first driving motor (6) is a stepping motor, and the second driving motor (19) is a dc motor.
3. The automatic barcode printing quality detector according to claim 1, wherein the laser tube (20) is provided with a light hole adjusting handle (14).
4. The automatic barcode printing quality detector according to claim 1, wherein the base plate (8) is further detachably connected with a dust cover (7), and the worktable (13) and the probe holder (23) are both located inside the dust cover (7).
5. A bar code printing quality detection method is characterized by comprising the following steps:
s1, a computer (1) transmits a control command to a core board of an electric appliance box (10) through a USB port (25), the core board drives a stepping motor to act through an interface board and drives a workbench (13) to transversely move, a light beam is emitted through a laser tube (20), then the bar height of a bar code is automatically measured in the transverse moving process of the workbench (13), and the computer (1) equally divides a detection band of the bar code into N detection areas according to the bar height of the bar code placed on the workbench (13);
s2, a probe seat (23) in a bar code detector host (3) longitudinally moves under the control of the computer (1), meanwhile, a laser tube (20) which synchronously moves along with the probe seat (23) emits light beams under the control of the computer (1), the light beams are reflected by a single detection area and then irradiate a photoelectric amplifier which synchronously moves along with the probe seat (23), and the photoelectric amplifier converts optical signals into electric signals and then transmits the electric signals to the computer (1);
s3, the computer (1) calculates the reflectivity value of each bar or each hollow in the bar code according to the electric signal, draws a reflectivity curve and obtains the quality grade of the bar code through the reflectivity curve;
s4, the workbench (13) in the bar code detector host (3) transversely moves under the control of the computer (1) until the light beam emitted by the laser tube (20) irradiates on the next detection area;
s5, repeating S2-S3 until all the detection of the N detection areas is completed, obtaining N quality grades, and calculating the average value of the N quality grades by the computer (1) to serve as the final quality grade of the bar code.
6. The method for detecting the printing quality of the bar code according to claim 5, wherein in the step S2, the grating reading head (21) moving synchronously with the probe holder (23) measures the fixed scale grating (22), converts the measured length signal into an electric pulse signal and transmits the electric pulse signal to the computer (1), thereby providing a basis for the computer (1) to calculate the size value of the bar code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010079338.6A CN111257345B (en) | 2020-02-04 | 2020-02-04 | Full-automatic bar code printing quality detector and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010079338.6A CN111257345B (en) | 2020-02-04 | 2020-02-04 | Full-automatic bar code printing quality detector and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111257345A CN111257345A (en) | 2020-06-09 |
| CN111257345B true CN111257345B (en) | 2023-02-28 |
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| CN101021431A (en) * | 2007-03-28 | 2007-08-22 | 北京东方捷码科技开发中心 | Table type bar code detector |
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| CN204166542U (en) * | 2014-11-14 | 2015-02-18 | 天津银箭科技有限公司 | A kind of intelligent barcode automatic tester |
| CN207074439U (en) * | 2017-08-24 | 2018-03-06 | 深圳市万讯通电子有限公司 | A kind of integrated bar code detector |
| CN109410210A (en) * | 2018-11-29 | 2019-03-01 | 陕西省标准化研究院 | Bar code printing quality detection method based on machine vision |
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| CN101021431A (en) * | 2007-03-28 | 2007-08-22 | 北京东方捷码科技开发中心 | Table type bar code detector |
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