Printing height adjustment method, device, UV printing equipment and storage medium

Abstract

Embodiments of the present invention provide a method and device for adjusting the printing height, a UV printing device, and a storage medium. The method comprises: measuring the thickness of a medium to be printed using a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed; performing thickness conversion processing on the minimum voltage value based on a pre-established calibration database to obtain the thickness of the medium to be printed; calculating the descending stroke of the Z axis of the printing carriage of the UV printing device based on the thickness to obtain a required descending stroke of the Z axis; and adjusting the Z axis downward based on the required descending stroke to adjust the printing height of the medium to be printed. Embodiments of the present invention can improve the accuracy of printing height adjustment, thereby ensuring printing accuracy and quality and reducing safety risks.

Description

Technical Field

[0001] The present invention relates to the field of printing technology, and in particular to a printing height adjustment method and device, UV printing equipment and storage medium. Background Art

[0002] The high efficiency, high precision, fast curing and versatility of UV printing equipment (such as the ability to support a variety of different materials to be printed media, a variety of different inks, etc.) make it the preferred equipment in the modern printing industry.

[0003] In the related art, an altimeter is usually installed on the printing carriage of the UV printing equipment. The altimeter is used to automatically measure the height between the nozzle carried by the printing carriage and the medium to be printed, so as to adjust the printing height of the nozzle to the medium to be printed and ensure the smooth progress of the printing operation.

[0004] However, this method can only measure the height of a certain point on the surface of the medium to be printed, and cannot comprehensively detect the overall condition of the surface of the medium to be printed. In particular, for the medium to be printed with poor workmanship such as uneven surface or partial warping, there may be measurement errors, resulting in collision between the print head and the surface of the medium to be printed, which not only affects the printing accuracy and quality of the medium to be printed, but also increases the safety risk of damaging the print head or the medium to be printed.

[0005] Therefore, how to improve the accuracy of printing height adjustment to ensure printing accuracy and quality and reduce safety risks has become a technical problem that needs to be solved urgently. Summary of the Invention

[0006] The main purpose of the embodiments of the present invention is to propose a printing height adjustment method, device, UV printing equipment and storage medium, aiming to reduce and improve the accuracy of printing height adjustment to ensure printing accuracy and quality and reduce safety risks.

[0007] To achieve the above-mentioned object, a first aspect of an embodiment of the present invention provides a method for adjusting printing height, wherein the method uses a UV printing device and comprises:

[0008] Measuring the thickness of the medium to be printed by a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed;

[0009] Performing thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed;

[0010] Calculating the Z-axis descent stroke of the printing carriage of the UV printing device according to the thickness to obtain the required Z-axis descent stroke;

[0011] The Z axis is adjusted downward according to the required downward stroke to adjust the printing height of the medium to be printed.

[0012] To achieve the above-mentioned purpose, a second aspect of an embodiment of the present invention provides a printing height adjustment device, the device comprising:

[0013] A measuring module, configured to measure the thickness of the medium to be printed by using a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed;

[0014] a conversion module, configured to perform thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed;

[0015] a calculation module, configured to calculate a descending stroke of a Z-axis of a printing carriage of a UV printing device according to the thickness, and obtain a required descending stroke of the Z-axis;

[0016] The adjustment module is used to adjust the Z axis downward according to the required downward stroke to adjust the printing height of the medium to be printed.

[0017] To achieve the above-mentioned purpose, the third aspect of an embodiment of the present invention proposes a UV printing device, which includes a memory and a processor. The memory stores a computer program, and the processor implements the method described in the first aspect when executing the computer program.

[0018] To achieve the above objectives, a fourth aspect of an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in the first aspect is implemented.

[0019] In the scheme implemented by the printing height adjustment method, device, UV printing equipment and storage medium proposed in the present invention, the thickness of the medium to be printed is measured by a laser laser to obtain the minimum voltage value when the laser laser measures the thickness of the medium to be printed; the minimum voltage value is converted into thickness according to a pre-constructed calibration database to obtain the thickness of the medium to be printed; according to the thickness, the descending stroke of the Z axis of the printing carriage of the UV printing equipment is calculated to obtain the required descending stroke of the Z axis; the Z axis is adjusted downward according to the required descending stroke to adjust the printing height of the medium to be printed. In the present invention, on the one hand, by obtaining the minimum voltage value when the laser measures the thickness of the medium to be printed in a non-contact manner, the measurement error can be reduced, and a reliable indicator can be provided for obtaining the thickness of the medium to be printed; on the other hand, through the pre-constructed calibration database, the minimum voltage value can be quickly converted into thickness, which can improve the accuracy of the thickness of the medium to be printed; on the other hand, the required descending stroke of the Z-axis of the printing carriage of the UV printing equipment is calculated according to the thickness of the printing medium, providing reliable data support for adjusting the Z-axis, so that the Z-axis can be automatically, reasonably and accurately lowered according to the required descending stroke, ensuring that the appropriate distance is maintained between the print head and the medium to be printed, and realizing precise printing height adjustment, thereby improving the accuracy, simplicity and automation of the printing height adjustment, and avoiding excessively high or low printing heights during the printing process to avoid collision between the print head and the surface of the medium to be printed, thereby ensuring printing accuracy and quality, and reducing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of a method for adjusting the printing height according to an embodiment of the present invention;

[0021] Figure 2 This is another schematic flow chart of a method for adjusting the printing height according to one embodiment of the present invention;

[0022] Figure 3 yes Figure 1 A schematic flow chart of a specific implementation of step S102;

[0023] Figure 4 is a schematic block diagram of a printing height adjustment device provided by an embodiment of the present invention;

[0024] Figure 5 The figure is a schematic block diagram of the structure of the UV printing device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein are for the purpose of describing embodiments of the present invention only and are not intended to limit the present invention.

[0028] In the related art, the process of automatic height measurement through an altimeter is generally to install the altimeter on the printing carriage, place the medium to be printed on the printing table of the UV printing equipment, move the printing table or the printing carriage to ensure that the medium to be printed is at the bottom of the altimeter, and then the altimeter pops out the height caliper, which stops after contacting the surface of the medium to be printed, and performs height measurement. Finally, the printing height of the print head to the medium to be printed is adjusted according to the height measurement result. This height measurement method can only measure the height of a point on the medium to be printed, and cannot cover the entire surface of the medium to be printed. If the surface of the medium to be printed is partially warped or uneven, it may cause measurement errors, affect the printing accuracy and quality, and may even bring safety risks of damaging the equipment or the medium to be printed.

[0029] In order to solve the above problems, a printing height adjustment method, device, UV printing equipment and storage medium are provided. In the embodiment of the present invention, a laser laser is used to measure the thickness of the medium to be printed to obtain the minimum voltage value when the laser laser measures the thickness of the medium to be printed; the minimum voltage value is converted into thickness according to a pre-constructed calibration database to obtain the thickness of the medium to be printed; according to the thickness, the descending stroke of the Z axis of the printing carriage of the UV printing equipment is calculated to obtain the required descending stroke of the Z axis; the Z axis is adjusted downward according to the required descending stroke to adjust the printing height of the medium to be printed. In this way, on the one hand, by obtaining the minimum voltage value when the laser measures the thickness of the medium to be printed in a non-contact manner, the measurement error can be reduced, providing a reliable indicator for obtaining the thickness of the medium to be printed; on the other hand, through the pre-constructed calibration database, the minimum voltage value can be quickly converted to thickness, which can improve the accuracy of the thickness of the medium to be printed; on the other hand, the required descending stroke of the Z-axis of the printing carriage of the UV printing equipment is calculated according to the thickness of the printing medium, providing reliable data support for adjusting the Z-axis, so that the Z-axis can be automatically, reasonably and accurately lowered according to the required descending stroke, ensuring that the appropriate distance is maintained between the print head and the medium to be printed, and realizing precise printing height adjustment, thereby improving the accuracy, simplicity and automation of the printing height adjustment, and avoiding excessively high or low printing heights during the printing process to avoid collision between the print head and the surface of the medium to be printed, thereby ensuring printing accuracy and quality, and reducing safety risks.

[0030] In the embodiments of the present invention, the printing height adjustment method can be applied to a UV printing device or can be software running on the UV printing device. The software can be an application that implements the printing height adjustment method, such as printing height adjustment software, but is not limited to the above form.

[0031] First, the nouns involved in this invention are analyzed:

[0032] UV printing equipment: refers to a digital inkjet printing device that uses ultraviolet (UV) light curing technology. It prints on the surface of various materials of the printing medium by spraying UV ink and uses ultraviolet lamps or light sources to cure the ink and make it dry quickly, thereby achieving the purpose of printing patterns or images.

[0033] The print carriage, also known as the printhead carriage or printing carriage, is the component responsible for moving the printheads in UV printing equipment. It is a key component of the printing system, carrying and moving the printheads to ensure print coverage and accuracy. The print carriage can move horizontally across the UV printing equipment's printing surface. Its Z-axis precisely controls the relative height (i.e., vertical distance) between the printheads and the printed media, ensuring an appropriate distance between them. This allows the printheads to accurately and evenly deposit ink across the entire surface, creating clear and detailed patterns or images.

[0034] The Z-axis controls the vertical distance between the printhead and the media being printed. It automatically adjusts the vertical position of the printhead. By precisely controlling the Z-axis, the printhead can be raised or lowered to accommodate uneven surfaces.

[0035] Media to be printed: For example, printed circuit boards (PCBs), metals, paper, cloth, glass, wood, ceramics and other materials to be printed.

[0036] Based on this, some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] See also Figure 1 , Figure 1 This is an optional flow chart of the printing height adjustment method provided by an embodiment of the present invention. Figure 1 The method may include but is not limited to steps S101 to S104.

[0038] S101: measuring the thickness of the medium to be printed by using a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed.

[0039] In order to reduce the measurement error and the impact of physical contact on the printing medium, and to improve the stability and reliability of the measurement, laser technology is used to perform non-contact thickness measurement of the printing medium. Specifically, the thickness of the printing medium can be measured by a laser.

[0040] In some embodiments, before step S101, a laser can be deployed at an appropriate location on the UV printing device so that the laser beam can fully cover the entire medium to be printed, facilitating high-precision thickness measurement of the medium to be printed. The UV printing device can communicate with the laser via a network.

[0041] Among them, the laser laser can include a laser laser transmitter and a laser laser receiver. For example, a pair of laser laser transmitters and laser laser receivers can be installed directly in front of the printing table of the UV printing equipment to ensure that the laser scanning range of the laser laser (also called the laser measurement area) can fully cover the entire printing table.

[0042] Before step S101 in some embodiments, the installation position of the laser relative to the UV printing device may be calibrated.

[0043] After installing the laser transmitter and laser receiver, calibrate the installation position of the laser transmitter and laser receiver to adjust the physical position of the laser transmitter and laser receiver so that the laser transmitter and laser receiver are horizontally aligned to ensure the consistency of the laser emission angle and the laser reception angle throughout the measurement process, thereby reducing measurement errors and improving measurement accuracy.

[0044] In this way, the medium to be printed can be placed on the printing table of the UV printing equipment and effectively fixed, and the laser laser can be started. After starting the laser laser, the printing table can be pushed forward so that the entire printing table passes through the laser scanning range of the laser laser to complete the thickness measurement.

[0045] The principle of laser thickness measurement is that laser light emitted by a laser transmitter strikes the surface of the media to be printed. The laser light interacts with the media and reflects off it. The thickness of the media to be printed is estimated by measuring the signal strength of the laser light reflected from the laser transmitter back to the laser receiver. However, the physical properties of the media to be printed (such as transparency, density, and optical properties), as well as external environmental factors (such as light and temperature), may affect the reflected signal strength, resulting in inaccurate thickness estimates. However, the laser receiver converts the reflected laser light into a voltage signal. This allows the minimum voltage of the laser receiver to accurately reflect the specific relationship between the reflected signal strength and the thickness of the media to be printed. Therefore, the minimum voltage of the laser receiver can be indirectly measured as an effective thickness indicator, providing a better understanding of the thickness of the media to be printed.

[0046] In this way, by obtaining the lowest voltage value when the laser measures the thickness of the medium to be printed, the thickness of the medium to be printed can be determined by the lowest voltage value, thereby improving the accuracy of the thickness of the medium to be printed.

[0047] S102: Performing thickness conversion processing on the lowest voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed.

[0048] In order to accurately convert the minimum voltage value into the thickness of the medium to be printed, the minimum voltage value may be converted into thickness according to a pre-built calibration database.

[0049] In some embodiments, see Figure 2 Before step S101, the following steps may also be included but not limited to:

[0050] S105: measuring the thickness of a standard gauge block with a calibrated thickness by using a laser to obtain a calibrated minimum voltage value when the laser measures the thickness of the standard gauge block.

[0051] S106: Constructing a calibration database according to the calibration thickness and the calibration minimum voltage value.

[0052] For steps S105-S106, a standardized calibration database can be constructed through pre-calibration experiments. Specifically, a set of standard gauge blocks of varying calibrated thicknesses are sequentially placed on the printing table of the UV printing equipment and effectively secured (e.g., with tape). The printing table is then advanced, and the thickness of each standard gauge block is measured using a laser. The lowest voltage value of the laser receiver when measuring the thickness of each standard gauge block is recorded (defined as the calibration minimum voltage value).

[0053] Among them, the standard gauge block refers to a physical sample with a known calibrated thickness (that is, accurate thickness), such as a well-made metal block, plastic block or other material block.

[0054] For example, for a set of 8 standard gauge blocks, the calibrated thicknesses are 2 mm, 3 mm, 4 mm, 5 mm, ..., 9 mm, respectively. The thicknesses of these standard gauge blocks are measured by a laser. The lowest voltage value of the laser receiver when measuring the thickness of each standard gauge block is recorded as the calibration lowest voltage value, such as:

[0055] The minimum voltage value of the 2mm standard gauge block is 2.1V;

[0056] The minimum voltage value of the 3mm standard gauge block is 2.5V;

[0057] The minimum voltage value of the 4mm standard gauge block is 2.9V;

[0058] The minimum voltage value of the 5mm standard gauge block is 3.3V;

[0059] …

[0060] The minimum voltage value of the 9mm standard gauge block is 4.5V.

[0061] In this way, a mapping relationship between the calibrated thickness and the corresponding calibrated minimum voltage value can be established, for example:

[0062] When the calibration thickness is 2mm, the mapped calibration minimum voltage value is 2.1V;

[0063] When the calibration thickness is 3mm, the mapped calibration minimum voltage value is 2.5V;

[0064] When the calibrated thickness is 4mm, the mapped calibrated minimum voltage value is 2.9V;

[0065] When the calibration thickness is 5mm, the mapped calibration minimum voltage value is 3.3V;

[0066] …

[0067] When the calibrated thickness is 9mm, the mapped calibrated minimum voltage value is 4.5V.

[0068] It can be understood that the mapping relationship is a one-to-one correspondence between the calibrated thickness and the calibrated minimum voltage value.

[0069] In this way, a calibration database (such as covering a calibration thickness range of 0-9 mm) can be constructed through this mapping relationship as an accurate reference for thickness conversion.

[0070] It is worth noting that the calibration database has good scalability and maintainability. The mapping relationship between calibration thickness and calibration minimum voltage value can be added regularly and flexibly to ensure that the calibration database covers a wider range of dielectric thickness and can adapt to thickness conversion changes and requirements in a timely manner.

[0071] In some embodiments, see Figure 3 Step S102 may include but is not limited to the following steps:

[0072] S1021: Compare the lowest voltage value with the calibration database to find out whether there is a first calibrated lowest voltage value consistent with the lowest voltage value in the calibration database.

[0073] S1022: When a first calibrated lowest voltage value exists in the calibration database, based on a mapping relationship between calibrated thickness and calibrated lowest voltage value in the calibration database, use the first calibrated thickness mapped to the first calibrated lowest voltage value as the thickness.

[0074] S1023: If the first calibrated lowest voltage value does not exist in the calibration database, search the calibration database for a second calibrated lowest voltage value that is smaller than the lowest voltage value and a third calibrated lowest voltage value that is larger than the lowest voltage value.

[0075] S1024: Determine a second calibration thickness of the second calibration lowest voltage value mapping and a third calibration thickness of the third calibration lowest voltage value mapping based on the mapping relationship.

[0076] S1025: Calculate the thickness of the lowest voltage value according to the second calibrated lowest voltage value, the third calibrated lowest voltage value, the second calibrated thickness, and the third calibrated thickness to obtain the thickness.

[0077] For steps S1021-S1025, in order to quickly and accurately convert the minimum voltage value when measuring the thickness of the medium to be printed, the minimum voltage value is compared with the calibration database to find out whether there is a first calibrated minimum voltage value consistent with the minimum voltage value in the calibration database.

[0078] When there is a first calibrated minimum voltage value in the calibration database, the first calibrated thickness mapped to the first calibrated minimum voltage value is determined based on the mapping relationship between the calibrated thickness and the calibrated minimum voltage value in the calibration database, and the determined first calibrated thickness is used as the thickness of the medium to be printed.

[0079] When the first calibrated minimum voltage value does not exist in the calibration database, a second calibrated minimum voltage value that is less than the minimum voltage value and a third calibrated minimum voltage value that is greater than the minimum voltage value are searched in the calibration database, and based on the mapping relationship between the calibrated thickness and the calibrated minimum voltage value in the calibration database, the second calibrated thickness mapped by the second calibrated minimum voltage value and the third calibrated thickness mapped by the third calibrated minimum voltage value are determined.

[0080] In this way, the thickness of the medium to be printed can be obtained by performing thickness calculation on the lowest voltage value according to the second calibrated lowest voltage value, the third calibrated lowest voltage value, the second calibrated thickness, and the third calibrated thickness.

[0081] In this way, by querying the calibration database, the lowest voltage value can be quickly converted into the thickness of the medium to be printed, which not only simplifies the thickness conversion process and improves the thickness conversion efficiency, but also improves the accuracy of the thickness of the medium to be printed.

[0082] In step S1025 of some embodiments, a preset thickness calculation formula may be obtained. ,in, Indicates the minimum voltage value, Indicates the second lowest voltage value. Indicates the third calibration lowest voltage value, Indicates the second calibration thickness, represents the third calibrated thickness; substitute the minimum voltage value, the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness, and the third calibrated thickness into the thickness calculation formula to calculate the thickness.

[0083] In step S1025, if the first calibrated lowest voltage value that is consistent with the lowest voltage value cannot be directly matched in the calibration database, an interpolation calculation can be performed based on a preset thickness calculation formula to calculate the thickness of the medium to be printed using the lowest voltage value. The thickness calculation formula is as follows:

[0084]

[0085] in, Indicates the thickness of the medium to be printed;

[0086] Indicates the minimum voltage value;

[0087] Indicates the second lowest calibration voltage value;

[0088] Indicates the third calibration lowest voltage value;

[0089] Indicates the second calibration thickness;

[0090] Indicates the third calibration thickness.

[0091] In this way, even if the minimum voltage value when measuring the thickness of the medium to be printed fails to match a consistent calibration minimum voltage value in the calibration database, the thickness of the medium to be printed can be calculated more accurately based on the calibration database, thereby improving the reliability of the thickness of the medium to be printed.

[0092] In S1021 of some embodiments, after comparing the lowest voltage value with the calibration database, it may also include: when the lowest voltage value is less than the minimum calibrated lowest voltage value in the calibration database or greater than the maximum calibrated lowest voltage value in the calibration database, issuing a prompt message that the measurement range is exceeded.

[0093] If the minimum voltage value when measuring the thickness of the medium to be printed is outside the range of the calibrated minimum voltage value contained in the calibration database, a prompt message indicating that the measurement range is exceeded can be issued to remind the relevant printing operator to take corresponding measures, for example:

[0094] Check the condition of the media to be printed: confirm whether the media to be printed meets the requirements of the UV printing equipment, such as whether there is obvious dirt or deformation. If so, clean or re-prepare the media to be printed;

[0095] Check the working status of the laser: confirm whether the laser is working properly and whether there are any faults or calibration problems, such as whether the power of the laser transmitter is stable, whether the laser is correctly focused, etc. If so, the laser needs to be maintained;

[0096] Check the coordination between the UV printing equipment and the laser: for example, whether there is any abnormality on the printing table. If so, perform maintenance on the printing table.

[0097] In this way, step S101 is re-executed to ensure that the printing operation on the medium to be printed is completed smoothly.

[0098] S103: Calculate the Z-axis descent stroke of the printing carriage of the UV printing device based on the thickness to obtain the required Z-axis descent stroke;

[0099] After obtaining the thickness of the medium to be printed, the Z-axis descending stroke of the printing carriage is calculated according to the thickness of the medium to be printed, and the required descending stroke of the Z-axis is obtained, so as to provide a reliable basis for automatic and precise adjustment of the Z-axis.

[0100] In step S103 of some embodiments, a preset travel calculation formula may be obtained. ,in, Indicates that the demand for the trip is decreasing. Indicates the preset maximum descending stroke of the Z axis. Indicates thickness, Indicates the preset safety height; substitute the thickness into the stroke calculation formula to obtain the required descent stroke.

[0101] In step S103, the required descending stroke of the Z axis can be calculated according to the thickness of the medium to be printed using a preset stroke calculation formula. The stroke calculation formula is as follows:

[0102]

[0103] in, Indicates a decreasing demand trip;

[0104] Indicates the preset maximum descent stroke of the Z axis, which can be a constant value determined based on the physical structure of the printing carriage;

[0105] Indicates the thickness of the medium to be printed;

[0106] Indicates the preset safety height, which is a fixed safety height to prevent the print head from colliding with the surface of the medium to be printed. For example, the value is 1mm.

[0107] In this way, the required descending stroke of the Z axis of the printing carriage is calculated according to the thickness of the medium to be printed, so that the Z axis can be automatically adjusted based on the required descending stroke, thereby achieving precise adjustment of the printing height.

[0108] S104: The Z axis is adjusted downward according to the required downward stroke to adjust the printing height of the medium to be printed.

[0109] Finally, based on the calculated required descent stroke, the Z-axis of the printing carriage is automatically lowered to ensure an appropriate distance between the print head and the surface of the medium to be printed, thereby automatically adapting and accurately adjusting the printing height.

[0110] It can be seen that in the above solution, through non-contact automatic thickness measurement, thickness conversion processing, required descending stroke calculation and automatic adjustment of the Z axis, it is possible to ensure that the appropriate distance between the print head and the medium to be printed is maintained, thereby avoiding excessively high or low printing heights during the printing process, ensuring precise control of the printing height during the printing operation, improving printing quality and efficiency, and thus improving the printing effect. It is suitable for application fields requiring high-precision printing, such as:

[0111] Advertising industry: such as high-quality printing on outdoor billboards, signs, display boards, etc.

[0112] Industrial product identification: such as printing clear patterns, barcodes, QR codes, etc. on plastic, metal, glass, wood and other products.

[0113] Personalized customization: such as customized exquisite mobile phone cases, home decorations, souvenirs, etc.

[0114] Packaging industry: used for beautifying printing of various packaging materials, especially small-batch, customized packaging.

[0115] PCB printing: such as directly printing fine circuit patterns on PCB boards.

[0116] The printing height adjustment method provided in the above embodiment measures the thickness of the medium to be printed by a laser laser to obtain the minimum voltage value when the laser laser measures the thickness of the medium to be printed; the minimum voltage value is converted into thickness according to a pre-built calibration database to obtain the thickness of the medium to be printed; according to the thickness, the descending stroke of the Z axis of the printing carriage of the UV printing equipment is calculated to obtain the required descending stroke of the Z axis; the Z axis is adjusted downward according to the required descending stroke to adjust the printing height of the medium to be printed. In this way, on the one hand, by obtaining the minimum voltage value when the laser measures the thickness of the medium to be printed in a non-contact manner, the measurement error can be reduced, providing a reliable indicator for obtaining the thickness of the medium to be printed; on the other hand, through the pre-constructed calibration database, the minimum voltage value can be quickly converted to thickness, which can improve the accuracy of the thickness of the medium to be printed; on the other hand, the required descending stroke of the Z-axis of the printing carriage of the UV printing equipment is calculated according to the thickness of the printing medium, providing reliable data support for adjusting the Z-axis, so that the Z-axis can be automatically, reasonably and accurately lowered according to the required descending stroke, ensuring that the appropriate distance is maintained between the print head and the medium to be printed, and realizing precise printing height adjustment, thereby improving the accuracy, simplicity and automation of the printing height adjustment, and avoiding excessively high or low printing heights during the printing process to avoid collision between the print head and the surface of the medium to be printed, thereby ensuring printing accuracy and quality, and reducing safety risks.

[0117] See also Figure 4 , Figure 4 It is a schematic block diagram of a printing height adjustment device provided by an embodiment of the present invention. The printing height adjustment device can be configured in a UV printing device to execute the aforementioned printing height adjustment method.

[0118] like Figure 4 As shown, the printing height adjustment device 400 includes: a measuring module 401 , a conversion module 402 , a calculation module 403 and an adjustment module 404 .

[0119] The measuring module 401 is configured to measure the thickness of the medium to be printed by using a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed;

[0120] A conversion module 402 is configured to perform thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed;

[0121] A calculation module 403 is configured to calculate the Z-axis descending stroke of the printing carriage of the UV printing device according to the thickness to obtain the required Z-axis descending stroke;

[0122] The adjustment module 404 is configured to adjust the Z axis downward according to the required downward stroke, so as to adjust the printing height of the medium to be printed.

[0123] In one embodiment, the calculation module 403 is specifically configured to:

[0124] Get the preset travel calculation formula ,in, Indicates the required descending stroke, Indicates the preset maximum descending stroke of the Z axis, represents the thickness, Indicates the preset safety height;

[0125] Substitute the thickness into the stroke calculation formula to calculate and obtain the required descending stroke.

[0126] In one embodiment, the conversion module 402 is specifically configured to:

[0127] Comparing the minimum voltage value with the calibration database to find out whether there is a first calibrated minimum voltage value consistent with the minimum voltage value in the calibration database;

[0128] If the first calibrated lowest voltage value exists in the calibration database, based on a mapping relationship between calibrated thicknesses and calibrated lowest voltage values ​​in the calibration database, using the first calibrated thickness mapped to the first calibrated lowest voltage value as the thickness;

[0129] If the first calibrated lowest voltage value does not exist in the calibration database, searching the calibration database for a second calibrated lowest voltage value that is smaller than the lowest voltage value and a third calibrated lowest voltage value that is larger than the lowest voltage value;

[0130] Determining, based on the mapping relationship, a second calibrated thickness of the second calibrated lowest voltage value mapping and a third calibrated thickness of the third calibrated lowest voltage value mapping;

[0131] The thickness is calculated by performing thickness calculation on the lowest voltage value according to the second calibrated lowest voltage value, the third calibrated lowest voltage value, the second calibrated thickness, and the third calibrated thickness to obtain the thickness.

[0132] In one embodiment, the conversion module 402 is further configured to:

[0133] Get the preset thickness calculation formula ,in, Indicates the minimum voltage value, Indicates the second lowest voltage value. represents the third calibrated lowest voltage value, represents the second nominal thickness, represents the third calibration thickness;

[0134] The minimum voltage value, the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness, and the third calibrated thickness are substituted into the thickness calculation formula to calculate and obtain the thickness.

[0135] In one embodiment, the conversion module 402 is further configured to:

[0136] When the minimum voltage value is less than the minimum calibrated minimum voltage value in the calibration database or is greater than the maximum calibrated minimum voltage value in the calibration database, a prompt message indicating that the measurement range is exceeded is issued.

[0137] In one embodiment, the printing height adjustment device 400 further includes a calibration module for:

[0138] Measuring the thickness of a standard gauge block with a calibrated thickness by the laser laser to obtain a calibrated minimum voltage value when the laser laser measures the thickness of the standard gauge block;

[0139] The calibration database is constructed according to the calibrated thickness and the calibrated minimum voltage value.

[0140] In one embodiment, the printing height adjustment device 400 further includes a calibration module for:

[0141] The installation position of the laser relative to the UV printing device is calibrated.

[0142] Among them, each module in the above-mentioned printing height adjustment device 400 corresponds to each step in the above-mentioned printing height adjustment method embodiment, and their functions and implementation processes are no longer described here one by one.

[0143] The printing height adjustment device 400 can execute the printing height adjustment method provided by the embodiment of the present invention. Therefore, on the one hand, by obtaining the minimum voltage value when the laser laser measures the thickness of the medium to be printed in a non-contact manner, the measurement error can be reduced, and a reliable indicator can be provided for obtaining the thickness of the medium to be printed; on the other hand, through the pre-constructed calibration database, the minimum voltage value can be quickly converted into thickness, which can improve the accuracy of the thickness of the medium to be printed; on the other hand, the required descending stroke of the Z axis of the printing trolley of the UV printing equipment is calculated according to the thickness of the printing medium, providing reliable data support for adjusting the Z axis, so that the Z axis can be automatically, reasonably and accurately lowered according to the required descending stroke, ensuring that the appropriate distance is maintained between the print head and the medium to be printed, and realizing precise printing height adjustment, thereby improving the accuracy, simplicity and automation of the printing height adjustment, and avoiding excessively high or low printing heights during the printing process to avoid collision between the print head and the surface of the medium to be printed, thereby ensuring printing accuracy and quality, and reducing safety risks.

[0144] The specific definition of the printing height adjustment device can be found in the definition of the printing height adjustment method above and will not be repeated here. The various modules in the above-mentioned printing height adjustment device can be implemented in whole or in part through software, hardware, or a combination thereof. The above-mentioned modules can be embedded in or independent of the processor of the UV printing device in hardware form, or can be stored in the memory of the UV printing device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0145] The methods and apparatus of the present invention can be used in a wide variety of general or specialized computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multi-processor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, and the like. The present invention can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, and the like that perform specific tasks or implement specific abstract data types. The present invention can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communications network. In a distributed computing environment, program modules can be located in local and remote computer storage media, including storage devices.

[0146] For example, the above method and apparatus may be implemented in the form of a computer program. The computer program may be implemented in the form of a computer program. Figure 5 The UV printing equipment shown is running.

[0147] See also Figure 5 , Figure 5 The figure is a schematic block diagram of the structure of a UV printing device provided by an embodiment of the present invention.

[0148] See also Figure 5 The UV printing device includes a processor and a memory connected through a system bus, wherein the memory may include a non-volatile storage medium and an internal memory.

[0149] The processor is used to provide computing and control capabilities to support the operation of the entire UV printing equipment.

[0150] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the processor can execute any one of the printing height adjustment methods.

[0151] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0152] In one embodiment, the processor is configured to execute a computer program stored in the memory to implement the following steps:

[0153] Measuring the thickness of the medium to be printed by a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed;

[0154] Performing thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed;

[0155] Calculating the Z-axis descent stroke of the printing carriage of the UV printing device according to the thickness to obtain the required Z-axis descent stroke;

[0156] The Z axis is adjusted downward according to the required downward stroke to adjust the printing height of the medium to be printed.

[0157] In one embodiment, when the processor calculates the descending stroke of the Z axis of the printing carriage of the UV printing device according to the thickness to obtain the required descending stroke of the Z axis, it is used to implement:

[0158] Get the preset travel calculation formula ,in, Indicates the required descending stroke, The preset maximum descending stroke of the Z axis, represents the thickness, Indicates the preset safety height;

[0159] Substitute the thickness into the stroke calculation formula to calculate and obtain the required descending stroke.

[0160] In one embodiment, when the processor performs thickness conversion processing on the minimum voltage value according to the pre-built calibration database to obtain the thickness of the medium to be printed, it is configured to implement:

[0161] Comparing the minimum voltage value with the calibration database to find out whether there is a first calibrated minimum voltage value consistent with the minimum voltage value in the calibration database;

[0162] If the first calibrated lowest voltage value exists in the calibration database, based on a mapping relationship between calibrated thicknesses and calibrated lowest voltage values ​​in the calibration database, using the first calibrated thickness mapped to the first calibrated lowest voltage value as the thickness;

[0163] If the first calibrated lowest voltage value does not exist in the calibration database, searching the calibration database for a second calibrated lowest voltage value that is smaller than the lowest voltage value and a third calibrated lowest voltage value that is larger than the lowest voltage value;

[0164] Determining, based on the mapping relationship, a second calibrated thickness of the second calibrated lowest voltage value mapping and a third calibrated thickness of the third calibrated lowest voltage value mapping;

[0165] The thickness is calculated by performing thickness calculation on the lowest voltage value according to the second calibrated lowest voltage value, the third calibrated lowest voltage value, the second calibrated thickness, and the third calibrated thickness to obtain the thickness.

[0166] In one embodiment, when the processor calculates the thickness of the minimum voltage value according to the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness, and the third calibrated thickness to obtain the thickness, the processor is configured to implement:

[0167] Get the preset thickness calculation formula ,in, Indicates the minimum voltage value, Indicates the second lowest voltage value. represents the third calibrated lowest voltage value, represents the second nominal thickness, represents the third calibration thickness;

[0168] The minimum voltage value, the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness, and the third calibrated thickness are substituted into the thickness calculation formula to calculate and obtain the thickness.

[0169] In one embodiment, after comparing the lowest voltage value with the calibration database, the processor is further configured to:

[0170] When the minimum voltage value is less than the minimum calibrated minimum voltage value in the calibration database or is greater than the maximum calibrated minimum voltage value in the calibration database, a prompt message indicating that the measurement range is exceeded is issued.

[0171] In one embodiment, before the processor measures the thickness of the medium to be printed by a laser to obtain the minimum voltage value when the laser measures the thickness of the medium to be printed, the processor is further configured to:

[0172] Measuring the thickness of a standard gauge block with a calibrated thickness by the laser laser to obtain a calibrated minimum voltage value when the laser laser measures the thickness of the standard gauge block;

[0173] The calibration database is constructed according to the calibrated thickness and the calibrated minimum voltage value.

[0174] In one embodiment, before implementing the thickness measurement of the medium to be printed by the laser to obtain the minimum voltage value when the laser measures the thickness of the medium to be printed, the processor is further configured to implement:

[0175] The installation position of the laser relative to the UV printing device is calibrated.

[0176] The UV printing device can execute the printing height adjustment method provided in the embodiment of the present invention, and therefore can achieve the beneficial effects that can be achieved by the printing height adjustment method provided in the embodiment of the present invention. Please refer to the previous embodiment for details and will not be repeated here.

[0177] An embodiment of the present invention also provides a computer-readable storage medium.

[0178] The computer-readable storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned method for adjusting the printing height are implemented.

[0179] The computer-readable storage medium may be an internal storage unit of the printing height adjustment device or UV printing device described in the aforementioned embodiments, such as a hard disk or memory of the printing height adjustment device or UV printing device. The computer-readable storage medium may also be an external storage device of the printing height adjustment device or UV printing device, such as a plug-in hard disk, a smart media card (SMC), a secure digital card (SD card), a flash card, etc., provided on the printing height adjustment device or UV printing device.

[0180] Since the computer program stored in the computer-readable storage medium can execute any one of the printing height adjustment methods provided in the embodiments of the present invention, the beneficial effects that can be achieved by any one of the printing height adjustment methods provided in the embodiments of the present invention can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0181] Furthermore, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of the blockchain node, etc.

[0182] Blockchain, as used in this article, refers to a novel application model for computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanisms, and encryption algorithms. Blockchain is essentially a decentralized database, a series of data blocks generated using cryptographic methods. Each block contains information about a batch of online transactions, used to verify the validity of this information (to prevent counterfeiting) and generate the next block. Blockchain can include the underlying blockchain platform, the platform product service layer, and the application service layer.

[0183] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0184] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all be included in the scope of protection of the present invention.

Claims

1. A method for adjusting printing height, characterized in that: The method is applied to UV printing equipment, including: Measuring the thickness of the medium to be printed by a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed; Performing thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed; Calculating the Z-axis descent stroke of the printing carriage of the UV printing device according to the thickness to obtain the required Z-axis descent stroke; Adjusting the Z axis downward according to the required downward stroke to adjust the printing height of the medium to be printed; The step of performing thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed includes: Comparing the minimum voltage value with the calibration database to find out whether there is a first calibrated minimum voltage value consistent with the minimum voltage value in the calibration database; If the first calibrated lowest voltage value exists in the calibration database, based on a mapping relationship between calibrated thicknesses and calibrated lowest voltage values ​​in the calibration database, using the first calibrated thickness mapped to the first calibrated lowest voltage value as the thickness; If the first calibrated lowest voltage value does not exist in the calibration database, searching the calibration database for a second calibrated lowest voltage value that is smaller than the lowest voltage value and a third calibrated lowest voltage value that is larger than the lowest voltage value; Determining, based on the mapping relationship, a second calibrated thickness of the second calibrated lowest voltage value mapping and a third calibrated thickness of the third calibrated lowest voltage value mapping; performing thickness calculation on the minimum voltage value according to the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness, and the third calibrated thickness to obtain the thickness; The step of calculating the Z-axis descent stroke of the printing carriage of the UV printing device according to the thickness to obtain the required Z-axis descent stroke includes: Get the preset travel calculation formula ,in, Indicates the required descending stroke, Indicates the preset maximum descending stroke of the Z axis, represents the thickness, Indicates the preset safety height; Substitute the thickness into the stroke calculation formula to calculate and obtain the required descending stroke.

2. The method according to claim 1, characterized in that The step of calculating the thickness of the lowest voltage value according to the second calibrated lowest voltage value, the third calibrated lowest voltage value, the second calibrated thickness, and the third calibrated thickness to obtain the thickness includes: Get the preset thickness calculation formula ,in, Indicates the minimum voltage value, Indicates the second lowest voltage value. represents the third calibrated lowest voltage value, represents the second nominal thickness, represents the third calibration thickness; The minimum voltage value, the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness, and the third calibrated thickness are substituted into the thickness calculation formula to calculate and obtain the thickness.

3. The method according to claim 1, characterized in that After comparing the minimum voltage value with the calibration database, the method further includes: When the minimum voltage value is less than the minimum calibrated minimum voltage value in the calibration database or is greater than the maximum calibrated minimum voltage value in the calibration database, a prompt message indicating that the measurement range is exceeded is issued.

4. The method according to any one of claims 1 to 3, characterized in that Before measuring the thickness of the medium to be printed by a laser to obtain the lowest voltage value when the laser measures the thickness of the medium to be printed, the method further includes: Measuring the thickness of a standard gauge block with a calibrated thickness by the laser laser to obtain a calibrated minimum voltage value when the laser laser measures the thickness of the standard gauge block; The calibration database is constructed according to the calibrated thickness and the calibrated minimum voltage value.

5. The method according to any one of claims 1 to 3, characterized in that Before measuring the thickness of the medium to be printed by a laser to obtain the lowest voltage value when the laser measures the thickness of the medium to be printed, the method further includes: The installation position of the laser relative to the UV printing device is calibrated.

6. A printing height adjustment device, characterized in that: The device comprises: A measuring module, configured to measure the thickness of the medium to be printed by using a laser to obtain a minimum voltage value when the laser measures the thickness of the medium to be printed; a conversion module, configured to perform thickness conversion processing on the minimum voltage value according to a pre-built calibration database to obtain the thickness of the medium to be printed; a calculation module, configured to calculate a descending stroke of a Z-axis of a printing carriage of a UV printing device according to the thickness, and obtain a required descending stroke of the Z-axis; An adjustment module, configured to adjust the Z axis downward according to the required downward stroke, so as to adjust the printing height of the medium to be printed; Wherein, the conversion module is further used to compare the minimum voltage value with the calibration database to find out whether there is a first calibrated minimum voltage value consistent with the minimum voltage value in the calibration database; if the first calibrated minimum voltage value exists in the calibration database, based on the mapping relationship between the calibrated thickness and the calibrated minimum voltage value in the calibration database, the first calibrated thickness mapped by the first calibrated minimum voltage value is used as the thickness; if the first calibrated minimum voltage value does not exist in the calibration database, the calibration database is searched for a second calibrated minimum voltage value less than the minimum voltage value and a third calibrated minimum voltage value greater than the minimum voltage value; based on the mapping relationship, the second calibrated thickness mapped by the second calibrated minimum voltage value and the third calibrated thickness mapped by the third calibrated minimum voltage value are determined; the thickness of the minimum voltage value is calculated according to the second calibrated minimum voltage value, the third calibrated minimum voltage value, the second calibrated thickness and the third calibrated thickness to obtain the thickness; The calculation module is also used to obtain the preset travel calculation formula ,in, Indicates the required descending stroke, Indicates the preset maximum descending stroke of the Z axis, represents the thickness, represents the preset safety height; the thickness is substituted into the stroke calculation formula to calculate the required descent stroke.

7. A UV printing device, characterized in that: The UV printing device includes a memory and a processor, the memory stores a computer program, and the processor implements the printing height adjustment method according to any one of claims 1 to 5 when executing the computer program.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the printing height adjustment method according to any one of claims 1 to 5 is implemented.

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