WO2021223433A1

WO2021223433A1 - Automatic registration printing machine and automatic registration method

Info

Publication number: WO2021223433A1
Application number: PCT/CN2020/134582
Authority: WO
Inventors: 唐桐泽; 江华; 张超; 廖述章
Original assignee: 深圳诚拓数码设备有限公司
Priority date: 2020-05-08
Filing date: 2020-12-08
Publication date: 2021-11-11
Also published as: CN111532014A

Abstract

Disclosed are an automatic registration printing machine and an automatic registration method, relating to the technical field of printing machines. The automatic registration printing machine comprises a printing assembly (4), an image acquisition device (5) and a control device connected to the image acquisition device (5), wherein the printing assembly (4) comprises a printing screen frame, a screen frame fixing device and a screen frame fine adjustment device, and the printing screen frame is arranged on the screen frame fixing device. The printing screen frame prints a mark pattern (12) on a platen (3), and when the platen (3) printed with the mark pattern (12) moves to a photographing range of the image acquisition device (5), the control device can obtain the offset between the mark pattern (12) and a reference pattern (11) according to the mark pattern (12) in a taken image and the reference pattern (11), and the screen frame fine adjustment device can quickly and accurately adjust the position of the printing screen frame according to the offset. The automatic registration printing machine and the automatic registration method are high in terms of registration precision.

Description

Automatic nesting printing machine and automatic nesting method

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 08, 2020. The application number is 202010383613.3 and the invention title is "An automatic registering machine and automatic registering method". The entire content is by reference. Incorporated in this application.

Technical field

The embodiments of the present application relate to the technical field of printing machines, in particular to an automatic registering printing machine and an automatic registering method.

Background technique

Screen printing is a printing method that uses ink or dye to penetrate the printed pattern area on the screen frame to print patterns on the substrate. During printing, the substrate is placed on the platen, and the substrate passes under the screen frame with the printing pattern along with the platen. The ink or dye is squeezed by the squeegee through the unblocked mesh to make the printing pattern printed on On the substrate, the target pattern is obtained through the screen frame printing of different stations. Before the printing machine performs printing processing, the screen frames of different stations need to be initially installed on the corresponding printing arms, but the preliminary installation cannot ensure the accuracy of the screen printing patterns of different stations. Therefore, it is necessary to set the printing machine before printing, and then perform batch processing and production after the set is completed.

In the process of realizing this application, the inventor found that in the prior art, most of the existing printing machines adopt manual nesting methods for nesting, which is difficult and low-efficiency; while the existing automatic nesting printing The machine has problems such as relatively complex structure and low positioning accuracy.

Summary of the invention

In order to overcome the problem of low registration accuracy of existing printing machines, embodiments of the present application provide an automatic registration printing machine and an automatic registration method, which can obtain the offset between the mark pattern generated by the printing screen frame and the reference pattern , And adjust the position of the printing screen frame according to the obtained offset.

In order to solve the above technical problems, the following technical solutions are provided in the embodiments of the present application:

In the first aspect, an embodiment of the present application provides an automatic register printing machine, the automatic register printing machine includes: a frame, a printing arm, a printing assembly, a platen, an image acquisition device and a control device, and the printing arm is arranged In the frame, the printing assembly is arranged on the printing arm, and the image acquisition device and the control device are communicatively connected; wherein,

The printing assembly includes a printing screen frame, a screen frame fixing device, and a screen frame fine-tuning device, the printing screen frame is set on the screen frame fixing device, and the screen frame fine-tuning device is used to adjust the printing screen frame in the The position of the screen frame fixing device;

The image acquisition device is arranged above the platen;

The control device is used for:

Controlling the printing screen frame to generate a marking pattern on the platen;

Acquiring the image with the marking pattern collected by the image collecting device;

Acquiring the offset between the marking pattern and the reference pattern according to the image;

The screen frame fine-tuning device is controlled to adjust the position of the printing screen frame according to the offset.

Optionally, the reference pattern includes a preset pattern in the image taken by the image acquisition device.

Optionally, the automatic register printing machine further includes a reference printing component, and the reference printing component is arranged on the printing arm;

The control device is also used for:

The reference printing assembly is controlled to generate the reference pattern on the platen.

Optionally, the reference printing component includes a digital printing machine;

Alternatively, the printing assembly includes a printing screen frame and a screen frame fixing device, and the printing screen frame is arranged on the screen frame fixing device.

Optionally, the reference pattern includes at least two reference positions, and the at least two reference positions are used to adjust the position of the printing screen frame in the X axis, Y1 axis, and Y2 axis directions.

Optionally, the marking pattern includes a cross pattern or a cross circle pattern.

Optionally, the screen frame fine-tuning device includes a first fine-tuning device and a second fine-tuning device, and the first fine-tuning device and the second fine-tuning device are respectively arranged at both ends of the printing arm;

The screen frame fixing device includes a first support seat and a second support seat, the first support seat is disposed on the first fine-tuning device, and the second support seat is disposed on the second fine-tuning device;

Two ends of the printing screen frame are respectively fixed to the first support base and the second support base;

The first fine-tuning device includes a Y1-axis fine-tuning motor, the second fine-tuning device includes a Y2-axis fine-tuning motor, the first fine-tuning device and/or the second fine-tuning device includes an X-axis fine-tuning motor, and the control device The X-axis fine-tuning motor, the Y1-axis fine-tuning motor and the Y2-axis fine-tuning motor are controlled to adjust the positions of the printing screen frame in the X-axis, Y1-axis and Y2-axis directions, respectively.

In a second aspect, the embodiments of the present application provide an automatic registering method, which is applied to an automatic registering printing machine, and the automatic registering printing machine includes an image acquisition device and a plurality of printing screen frames;

The method includes:

Printing a marking pattern on the corresponding substrate through the plurality of printing screen frames;

Forming the same reference pattern on the corresponding substrate;

Sequentially acquiring, by the image acquisition device, the marking pattern and the reference pattern on the corresponding substrate;

Acquiring the corresponding offset between the marking pattern and the reference pattern;

The positions of the multiple printing screen frames are sequentially adjusted according to the corresponding offset.

Optionally, the forming the same reference pattern on the corresponding substrate includes:

The reference pattern is formed on the substrate by the image acquisition device.

The reference pattern is printed on the platen.

In a third aspect, embodiments of the present application also provide a non-volatile computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by an electronic device, The electronic device is caused to execute the method as described above.

In a fourth aspect, the embodiments of the present application also provide a computer program product, the computer program product includes a computer program stored on a non-volatile computer-readable storage medium, the computer program includes program instructions, when the When the program instructions are executed by the electronic device, the electronic device is caused to execute the method as described above.

The beneficial effects of the embodiments of the present application are: different from the prior art, the automatic register printing machine provided in the embodiments of the present application includes a printing assembly, an image acquisition device, and a control device connected to the image acquisition device, and the printing assembly includes a printing screen. The frame, the screen frame fixing device and the screen frame fine-tuning device, wherein the printing screen frame is set on the screen frame fixing device. The printing screen frame prints the marking pattern on the platen. When the platen with the marking pattern is moved into the shooting range of the image acquisition device, the control device can obtain the marking pattern and the reference pattern according to the marking pattern and the reference pattern in the captured image After that, the screen frame fine-tuning device can quickly and accurately adjust the position of the printing screen frame according to the offset amount. Therefore, the automatic nesting printing machine and the automatic nesting method provided by the embodiments of the present application have high nesting accuracy and fast nesting speed.

Description of the drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. The elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the attached drawings do not constitute a scale limitation.

Figure 1 is a schematic structural diagram of an automatic register printing machine provided by an embodiment of the present application;

Figure 2a is a schematic diagram of a finished printed pattern provided by an embodiment of the present application;

Figure 2b is a schematic diagram of a set of platens printed with marking patterns provided by an embodiment of the present application;

2c is a schematic diagram of a set of platens printed with marking patterns according to another embodiment of the present application;

Figure 3 is an enlarged view of A in Figure 1;

4 is a schematic diagram of an image taken by an image acquisition device provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of an automatic register printing machine provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart of an automatic nesting method provided by an embodiment of the present application;

Fig. 7 is a schematic structural diagram of a control component provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and are not used to limit the application.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in this specification in the specification of this application are only for the purpose of describing specific implementations, and are not used to limit the application. In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In addition, "horizontal" and "vertical" and other indicating orientations or positional relationships are based on the orientations and positional relationships shown in the drawings, and are only for describing the application or facilitating the description, and do not indicate or imply that the device or element referred to must be It has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

The stations of the automatic register printing machine in the embodiments of the present application may be oval or linear. The following embodiments take an elliptical automatic register printing machine with an elliptical station as an example for description.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an automatic register printing machine provided by an embodiment of the present application. As shown in Figure 1, the automatic register printing machine includes a frame 1, a printing arm 2, a platen 3, a printing assembly 4, an image capture device 5 and a control device (not shown), wherein the frame 1 includes a frame foot ( (Not shown in the figure) and a fixed arm 7 fixed on the leg. One end of the printing arm 2 is hinged with the lower part of the fixed arm 7, the printing assembly 4 is connected with the printing arm 2, and the printing arm 2 drives printing by lifting or pressing itself The component 4 is lifted or pressed down. The printing arm 2 is connected with a driving device (not shown in the figure), and the printing arm 2 drives the printing arm to rise through the driving device. The printing arm 2 and the platen 3 are both arranged at intervals on the periphery of the fixed arm 7, the platen 3 is located below the printing arm 2, and the platen 3 is slidingly fitted with the frame 1.

Specifically, the driving device may be an air cylinder. The piston rod of the air cylinder extends from one end of the cylinder body and is hinged to the upper end of the fixed arm 7, and the other end of the cylinder body is hinged to the middle of the printing arm 2 and extends along the length of the printing arm 2. The direction is slidably matched with the printing arm 2.

In some embodiments, the automatic register printing machine further includes a tension spring (not shown), one end of the tension spring is connected to the middle of the fixed arm 7, and the other end is connected to the printing arm 2 through an adjusting plate (not shown) , The adjusting plate and the printing arm 2 can be installed in cooperation to change the relative position. Through the elastic force and buffering effect of the extension spring, the lifting or pressing action of the printing arm 2 can be buffered, and the vibration amplitude of the printing arm 2 can be reduced, thereby reducing the influence of the vibration of the printing arm 2 on the accuracy of the registration.

The printing assembly 4 in the embodiment of the present application includes a squeegee, a printing screen frame, a screen frame fixing device, and a screen frame fine-tuning device. The screen frame fixing device is fixedly connected to the printing arm 2, and the printing screen frame is set on the screen frame fixing device, and the screen frame fine-tuning The device is used to adjust the position of the printing screen frame on the screen frame fixing device. The printing screen frame is horizontally installed between the squeegee and the platen 3, and the squeegee can be installed on the printing arm 2 through a guide rail. The screen in the printing screen frame is usually made of nylon, glass, polyester, silk or metal mesh. The mesh of the printed pattern area on the screen is a through hole, which can penetrate ink or dye instead of the printed pattern area. The mesh is blocked and cannot penetrate the ink. The printed pattern area on the screen includes the ink leakage area of the pattern to be printed and the ink leakage area of the mark pattern. Scrape the ink or paste through the ink leakage area of the pattern to be printed and/or the ink leakage area of the marking pattern with a squeegee to print the pattern and/or marking pattern to be printed on the substrate; when the squeegee scrapes a screen frame, the The printing arm 2 is lifted up, and then the screen frame and the squeegee are lifted, and the next platen 3 enters the position of the squeegee from the previous station, so as to print a pattern on the substrate of the next platen 3.

The automatic register printing machine may include a plurality of platens 3. In some embodiments, the image capture device 5 is arranged above one of the platens 3; optionally, in some embodiments of the present application, the image capture device 5 can be set above the table 3 of the last station. The image acquisition device 5 is connected to the control device. Optionally, the image acquisition device 5 may be a CCD sensor. The image capture device 5 is used to capture the image of the marking pattern printed by the printing assembly 4 on the platen 3. The control device analyzes the offset between the marking pattern and the reference pattern according to the image of the marking pattern captured by the image capture device 5, and according to the deviation The displacement control screen frame fine-tuning device adjusts the position of the printing screen frame on the screen frame fixing device. There is a deviation between the position of the mark pattern and the reference pattern, the control device sends a control signal to make the screen frame fine-tuning device adjust the position of the printing screen frame; if the offset is 0, there is no deviation between the position of the mark pattern and the reference pattern, and the screen frame is fine-tuned The device does not need to adjust the position of the printing screen frame.

A printed pattern product usually includes partial patterns of different colors, and a screen frame can only print one color. Therefore, when the pattern to be printed includes multiple colors, multiple screen frames are required to cooperate to print the final printed pattern. Finished product. Therefore, the automatic register printing machine usually includes multiple printing components 4, each printing component is used to print a different color partial pattern, in order to make the partial pattern of each printing component 4 can be printed in the preset position, in the formal printing Previously, it was necessary to automatically correct the position of the printing screen frame on each printing assembly. Please refer to 2a and 2b, where FIG. 2a is a schematic diagram of a finished printed pattern provided by an embodiment of the present application; FIG. 2b is a schematic diagram of a plurality of platens 3 printed with marking patterns provided by an embodiment of the present application. As shown in Figure 2a and Figure 2b, the petal pattern in the printed pattern is composed of six petals of different colors, and six printing components 4 with different colors are required to print together to print a complete petal pattern on the substrate. Therefore, , It is necessary to pre-set ink leakage areas with different petal patterns on the printing screen frame of each printing unit, and then print six petals on the same substrate. In addition, it is necessary to correct the positions of the ink leakage areas of the six petal patterns one by one before printing.

When correcting the position of the printing screen frame, the actual printing pattern on the printing screen frame needs to be printed on the platen 3, and the image of the actual printed pattern on the platen 3 is acquired by the image acquisition device 5, and the image of the actual printed pattern Analyze the offset between the position of the actual printed pattern and the reference position. When the size of the actual printed pattern is large or the pattern is relatively complicated, if the offset of the actual printed pattern is directly obtained, there may be a large error in the obtained offset. Therefore, the marking pattern is used in the embodiment of the present application to indirectly analyze the offset of the actual printed pattern.

In order to improve the register accuracy of the automatic register printer, in some embodiments, the reference pattern includes at least two reference positions, that is, the number of the mark pattern and the reference pattern are both two or more. When the number of mark patterns (reference patterns) is two, the two mark pattern ink leakage areas (reference pattern ink leakage areas) are respectively located at both ends of the printing screen frame, and the control device is formed on the platen 3 according to the printing screen frame The offset between the two marking patterns and the corresponding reference pattern controls the screen frame fine-tuning device to adjust the position of the printing screen frame in the X axis, Y1 axis and Y2 axis directions.

Specifically, in some embodiments of the present application, the two marking pattern ink leakage areas are the marking pattern ink leakage area 1 and the marking pattern ink leakage area 2, and the marking pattern ink leakage area 1 is located at the first end of the screen frame. The ink leakage area 2 of the marking pattern is located at the second end of the screen frame, wherein the first end and the second end are arranged opposite to each other. The marking pattern ink leakage area 1 forms a marking pattern 1 on the platen 3, and the marking pattern ink leakage area 2 forms a marking pattern 2 on the platen 3. The control device can adjust the position of the printing screen frame in the X-axis direction according to the offset of the marking pattern 1 or the marking pattern 2 in the X-axis direction, and adjust the position of the first end according to the offset of the marking pattern 1 on the Y1 axis, and Adjust the position of the second end according to the offset of the marking pattern 2 on the Y2 axis.

Optionally, when the number of marking patterns printed on the platen 3 is three, the offset angle between the first corner formed by the three marking patterns and the corresponding second corner formed by the three reference patterns may be used, The control device rotates the printing screen frame clockwise or counterclockwise along the Z axis according to the obtained offset angle to fine-tune the position of the printing screen frame, where the Z axis is perpendicular to the plane formed by the X axis and the Y1 (or Y2 axis) .

Specifically, the marking pattern may be a cross pattern and/or a cross circle pattern and/or a hollow circle pattern and/or a solid circle pattern, which can be selected and used as required. At this time, the printing screen frame is provided with the actual printing pattern ink leakage area and the marking pattern ink leakage area, and the marking pattern ink leakage area is located in a fixed area near the actual printing pattern ink leakage area. The marking pattern is printed on the printing screen frame. After the platen 3 is placed, since the relative position of the marking pattern and the actual printing pattern remains unchanged, the adjustment of the actual printing pattern can be completed according to the marking pattern. Figures 2b and 2c take the cross-circle pattern as an example for illustration. For example, in Figure 2b, the actual printing pattern is the petals in the figure. In order to facilitate the analysis of the offset between the current position and the actual position of the petals, at least one cross circle pattern is set at a preset position around the petals. The offset between the current position and the reference position is the offset between the current position of the petal and the reference position.

In addition, in some embodiments, the number, position, and size of the ink leakage area of the marking pattern provided on each printing screen frame are the same. In order to make the offset acquired by the image acquisition device 5 more accurate, the image of each marking pattern on a platen needs a corresponding image acquisition device 5 to acquire, and each marking pattern can be located on the corresponding image acquisition device 5. Below. For example, in Figure 2c, the two marking patterns printed on the platen 3 are on both sides of the platen 3, and each platen 3 printed with the marking pattern requires two image acquisition devices 5 to obtain the two marking patterns. For the image, since the number and position of the ink leakage area of the marking pattern set on each printing screen frame are the same, the position of the marking pattern printed on the platen 3 of each printing screen frame is similar. Therefore, the controller can be based on The images taken by the two image acquisition devices 5 realize precise adjustment of the positions of all the printing screen frames. The image acquisition device 5 in this application is a group. After the marking pattern and reference pattern are formed on each platen 3, they are transferred to the image acquisition device 5. The image acquisition device 5 collects image data for each platen 3 respectively. , The whole set only needs a set of image acquisition devices 5, and the marking patterns and reference patterns are on the opposite ends of the platen 3, the position of the image acquisition device 5 is relatively fixed, and different platens 3 are moved to the image The image data can be collected when the collecting device 5 is below.

In the actual setting process, the size of the marking pattern is usually small, while the size of the actual printing pattern is relatively large. Since only the offset of the marking pattern is needed to correct the position of the printing screen frame, it only needs to be on the platen. 3, the marking pattern is printed on, without the need to print the actual printing pattern. Therefore, before correcting the position of the printing screen frame, it is necessary to block the meshes of the ink leakage area of the actual printing pattern on the printing screen frame or scrape ink only in the ink leakage area of the marking pattern. For example, in Figure 2c, only the marking pattern is printed on the platen 3. In addition, if the actual printing pattern is also printed on the platen 3 during the nesting process, not only the ink or paste used for printing will be wasted, but also the platen 3 will be contaminated.

In some embodiments, the reference pattern includes a preset pattern among the patterns captured by the image capture device 5. When at least one platen 3 printed with a marking pattern moves to the platen 3 below the image capture device 5 in turn, the image capture device 5 Acquire the image of each marking pattern in turn. Since the image also includes a preset pattern (or the position center of the image acquisition device 5), the preset pattern is used as the reference pattern, and the control device only needs to follow the image of the marking pattern. Correct the position of the printing screen frame. When the preset image in the image acquisition device 5 is used as the reference pattern, there are at least two printing components 4. In some other embodiments, the automatic register printing machine further includes a reference printing assembly, the reference printing assembly is arranged on the fixed arm 7 or the printing arm 2, the reference printing assembly is used to print a reference pattern on the platen 3, the reference printing assembly and Control device connection. The controller is used to control the printing device and the reference printing device to print the marking pattern and the reference pattern on the same platen 3 respectively. At this time, the control device can obtain the offset between the marking pattern and the reference pattern more conveniently and intuitively according to the image of the marking pattern and the reference pattern printed on the platen 3 taken by the image acquisition device 5, and the acquired offset It is more precise, and then the screen frame fine-tuning device can quickly and accurately adjust the position of the printing screen frame according to the offset.

In some embodiments, as shown in FIG. 1, the reference printing component may be a digital printing machine 6, which has a nozzle (not shown in the figure) for dyeing, and the nozzle is opposite to the platen 3. The inkjet printing pattern can be performed at the preset position as required. When the reference printing unit is a digital printing machine 6, there is at least one printing unit 4. When the reference printing component is the digital printer 6, it is traditional screen printing combined with digital printing. The advantages of traditional screen printing can be used to print the bottom pattern of a large area on the substrate, and then digital inkjet can be used for small areas and embellishments. Flexible printing, no plate making, reasonable use of the advantages of various modes, the use of rapid and efficient formation of delicate patterns, the printing effect is good. Optionally, in some other embodiments, the reference printing assembly includes a printing screen frame and a screen frame fixing device, and the printing screen frame is arranged on the screen frame fixing device. The structure of the reference printing assembly can be the same as the structure of the printing assembly 4. In some embodiments, a printing assembly 4 may also be selected, and the position of the screen frame in the printing assembly 4 may be corrected to use the corrected printing assembly 4 as Reference printing components. At this time, there are at least two printing components 4.

Please refer to Figure 3. Figure 3 is an enlarged view at A in Figure 1. As shown in Figure A, the screen frame fixing device includes two first support seats (not shown) and two second support seats (not shown) ), the screen frame fine-tuning device includes a first fine-tuning device 21 and a second fine-tuning device 22. The first and second fine-tuning

devices

21 and 22 are respectively arranged at both ends of the printing arm 2. The two first support seats and the first fine-tuning device The device 21 is connected, the two second supporting seats are connected with the second fine-tuning device 22, one end of the printing screen frame is fixed to the two first supporting seats, and the other end of the printing screen frame is fixed to the two second supporting seats.

In some embodiments, the first fine-tuning device includes an X1-axis fine-tuning device, a Y1-axis fine-tuning device, and a Z1-axis fine-tuning device, and the X1-axis fine-tuning device, the Y1-axis fine-tuning device, and the Z1-axis fine-tuning device are respectively used to drive the two first supports The seat moves along the X1 axis, Y1 axis and Z1 axis; the second fine-tuning device includes X2-axis fine-tuning device, Y2-axis fine-tuning device and Z2-axis fine-tuning device, and X2-axis fine-tuning device, Y2-axis fine-tuning device and Z2-axis fine-tuning device They are respectively used to drive the two second support bases to move along the X2 axis, Y2 axis and Z2 axis. Among them, the Y1-axis fine-tuning device and the Y2-axis fine-tuning device are connected with the control device, and the control device is used to control the Y1-axis fine-tuning device and the Y2-axis fine-tuning device. The X1-axis fine-tuning device or X2-axis fine-tuning device is connected to the control device.

Further, in some embodiments, the X1-axis fine-tuning device and/or the X2-axis fine-tuning device includes an X-axis fine-tuning motor, and the Y1-axis fine-tuning device and the Y2-axis fine-tuning device respectively include a Y1-axis fine-tuning motor and a Y2-axis fine-tuning motor; wherein, X1 The axis fine-tuning device drives the two first support bases and two second support bases to move along the X-axis direction through the X-axis fine-tuning motor, and the Y1-axis fine-tuning device drives the two first support bases to move along the Y1 axis through the Y1-axis fine-tuning motor. The Y2-axis fine-tuning device drives the two second support bases to move along the Y2-axis direction through the Y2-axis fine-tuning motor. The X-axis fine-tuning motor, Y1-axis fine-tuning motor and Y2-axis fine-tuning motor are respectively connected with the control device. The control device can obtain the offset of the mark pattern in the X-axis, Y1-axis and Y2-axis directions according to the image taken by the image acquisition device 5, and control the rotation of the X-axis fine-tuning motor according to the obtained offset to adjust the first support base And the displacement of the second support base along the X axis, and by controlling the rotation of the Y1 axis fine-tuning motor to adjust the displacement of the first support base along the Y1 axis, and by controlling the rotation of the Y2 axis fine-tuning motor to adjust the second support The displacement of the seat along the Y2 axis.

Please refer to FIG. 4, which is a schematic diagram of an image taken by the image acquisition device 5 in an embodiment of the application. The number of marking patterns and reference patterns in FIG. The offset between 12 and the corresponding reference pattern 11 is: a millimeter offset to the right along the X axis, and b1 millimeter downward along the Y1 axis; the mark pattern 22 is close to the Y2 axis fine-tuning motor, and the mark pattern 22 is aligned with the corresponding The offset between the reference patterns 21 is: a millimeter to the right along the X axis, and b2 millimeters to a downward along the Y2 axis. Let the Y1-axis fine-tuning motor drive the displacement of the first support base along the Y1-axis direction as m1, and let the Y2-axis fine-tuning motor drive the displacement of the second support base along the Y2-axis direction as m2. The control device can calculate the values of m1 and m2 according to b1 and b2 through the following formulas:

m1=k1·b1

m2=k2·b2

Among them, k1 is the Y1 axis correction coefficient, and k2 is the Y2 axis correction coefficient. Optionally, in some embodiments of the present application, 0<k1≦1, and 0<k2≦1.

After the control device calculates the values of m1 and m2, the X-axis fine-tuning motor drives the first support seat and the second support seat to move a millimeter to the left along the X-axis synchronously, and controls the Y1-axis fine-tuning motor to drive the first support seat along Y1. The axis is moved up by m1 mm, and the Y2 axis fine-tuning motor is controlled to drive the second support base to move up by m2 mm along the Y2 axis, so as to finally realize the rapid and accurate registration of the automatic registering machine.

Please refer to FIG. 5, which is a schematic structural diagram of an automatic register printing device provided by an embodiment of the present application. As shown in FIG. 5, in some embodiments, the automatic register printing machine also includes a person connected to the control device. Machine interface, the man-machine interface can be used to manually input parameters to adjust the position of the screen frame relative to the screen frame fixing device on the X axis, Y1 axis and Y2 axis. The control device in the embodiment of the present application includes a PLC controller, and the control device controls at least one printing assembly 4 through the PLC controller. Optionally, the control device further includes image analysis software. The image acquisition device 5 takes an image of the marking pattern and sends the image of the marking pattern to image analysis software. The image analysis software obtains the deviation between the marking pattern and the reference pattern according to the image of the marking pattern. The offset is converted into an electrical signal (pulse signal) and sent to the PLC controller, so that the PLC controller controls the fine-tuning motor in the screen frame fine-tuning device in each printing assembly 4 to adjust the position of the printing screen frame, Accurate and reliable in one step, will not be affected by human factors, high efficiency and good effect. The printing screen frames of different stations are all based on the reference pattern, the reference is unified, and then a group of image acquisition devices 5 are used to collect image data uniformly, and the offset between the mark pattern and the reference pattern is converted into an electrical signal to control the fine-tuning motor. , The degree of mechanical automation is high, and the setting is fast and accurate.

After the position of the screen frame is corrected, the meshes in the marking pattern area are blocked. When printing in production, only the pattern to be printed will be printed on the substrate (for example, cloth or finished clothes). The marking pattern will be printed. For example, by pasting transparent glue on the ink leakage area of the marking pattern, the mesh of the ink leakage area of the marking pattern can be blocked.

The automatic register printing machine provided by the embodiment of the present application includes at least one printing assembly 4, an image acquisition device 5, and a control device connected to the image acquisition device 5. The printing assembly 4 includes a printing screen frame, a screen frame fixing device, and a screen frame fine-tuning device , Wherein the printing screen frame is set on the screen frame fixing device. When the platen 3 printed with the marking pattern moves into the shooting range of the image acquisition device 5, the control device can obtain the offset between the marking pattern and the reference pattern according to the marking pattern and the reference pattern in the captured image, and the obtained The offset is relatively accurate, and then the screen frame fine-tuning device can quickly and accurately adjust the position of the printing screen frame according to the offset. Therefore, the automatic register printing machine provided by the embodiments of the present application has high register accuracy.

Please refer to FIG. 6. FIG. 6 is a schematic flowchart of an automatic arranging method provided by an embodiment of the present application. As shown in FIG. 6, in some embodiments, the control device is used to execute the following method steps:

S11. Printing a marking pattern on the corresponding substrate through the plurality of printing screen frames;

S12. Form the same reference pattern on the corresponding substrate;

S13: Acquire corresponding marking patterns and reference patterns on the substrate sequentially through the image acquisition device;

S14. Obtain a corresponding offset between the marking pattern and the reference pattern;

S15: Adjust the positions of the multiple printing screen frames in sequence according to the corresponding offset.

The substrate in the embodiment of this application can be the platen 3, fabric or finished clothes. When the substrate is the platen 3, it can avoid the automatic nesting of cloth or finished clothes, and use the existing platen 3 structure to avoid Waste of fabrics and finished clothes. The marking pattern and the reference pattern may be a group of two, or a group of three, and preferably a group of two. Each marking pattern is adjusted based on the reference pattern, which can quickly realize the registration and high accuracy.

In step S12, the formation of the reference pattern on the corresponding substrate may be formed by a digital printing machine, may be formed by scraping ink printing on the printing screen frame at the rear station, or may be formed by directly using the image capture device 5 The preset pattern is used as the reference pattern. When the digital printing machine or the printing screen frame forms the reference pattern, the order of forming the mark pattern and the reference pattern can be changed.

Step S15 also includes: converting each of the offsets into corresponding electrical signals and sending them to the PLC controller, so that the PLC controller controls the corresponding fine-tuning motor to adjust the position of the printing screen frame. Among them, the fine-tuning motors for adjusting each printing screen frame include X-axis fine-tuning motors, Y1-axis fine-tuning motors, and Y2-axis fine-tuning motors.

Please refer to FIG. 7. In some embodiments, the control device includes: one or more processors 410 and a memory 420. In FIG. 7, one processor 410 is taken as an example.

The processor 410 and the memory 420 may be connected through a bus or in other ways. In FIG. 6, the connection through a bus is taken as an example.

The memory 420, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The processor 410 executes various functional applications and data processing of the automatic register printing machine by running the non-volatile software programs, instructions and modules stored in the memory 420, that is, realizing the automatic registering method of the above method embodiment .

The memory 420 may include a program storage area and a data storage area. The program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the instant message reminder device. In addition, the memory 420 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 420 may optionally include a memory remotely provided with respect to the processor 410, and these remote memories may be connected to the instant message reminding device via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

The one or more modules are stored in the memory 420, and when executed by the one or more processors 410, the automatic arranging method in any of the above-mentioned method embodiments is executed, for example, the above-described FIG. 6 is executed. The method steps S11 to S15.

The above-mentioned products can execute the methods provided in the embodiments of the present application, and have functional modules and beneficial effects corresponding to the execution methods. For technical details not described in detail in this embodiment, please refer to the method provided in the embodiment of this application.

The embodiment of the present application provides a non-volatile computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, for example, as shown in FIG. 7 A processor 410 of may enable the above-mentioned one or more processors to execute the automatic arranging method in any of the above-mentioned method embodiments, for example, execute step S11 to step S15 of the method in FIG. 6 described above.

The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

Through the description of the above implementation manners, those of ordinary skill in the art can clearly understand that each implementation manner can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. A person of ordinary skill in the art can understand that all or part of the processes in the methods of the foregoing embodiments can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium. When executed, it may include the procedures of the above-mentioned method embodiments. Wherein, the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, not to limit them; under the idea of this application, the above embodiments or the technical features in different embodiments can also be combined. The steps can be implemented in any order, and there are many other variations in different aspects of the application as described above. For the sake of brevity, they are not provided in the details; although the application has been described in detail with reference to the foregoing embodiments, it is common in the art The technical personnel should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the implementations of this application Examples of the scope of technical solutions.

Claims

An automatic register printing machine, characterized in that the automatic register printing machine comprises: a frame, a printing arm, a printing assembly, a platen, an image acquisition device and a control device, and the printing arm is arranged on the frame , The printing assembly is arranged on the printing arm, and the image acquisition device and the control device are communicatively connected; wherein,

The printing assembly includes a printing screen frame, a screen frame fixing device, and a screen frame fine-tuning device, the printing screen frame is set on the screen frame fixing device, and the screen frame fine-tuning device is used to adjust the printing screen frame in the The position on the fixed device of the screen frame;

The image acquisition device is arranged above the platen;

The control device is used for:

Controlling the printing screen frame to generate a marking pattern on the platen;

Acquiring the image with the marking pattern collected by the image collecting device;

Acquiring the offset between the marking pattern and the reference pattern according to the image;

The screen frame fine-tuning device is controlled to adjust the position of the printing screen frame according to the offset.
The automatic register printing machine according to claim 1, wherein the reference pattern comprises a preset pattern in the image taken by the image acquisition device.
The automatic register printing machine according to claim 1, wherein the automatic register printing machine further comprises a reference printing assembly, and the reference printing assembly is arranged on the printing arm;

The control device is also used for:

The reference printing assembly is controlled to generate the reference pattern on the platen.
The automatic register printing machine according to claim 3, wherein the reference printing component comprises a digital printing machine;

Alternatively, the reference printing assembly includes a printing screen frame and a screen frame fixing device, and the printing screen frame is arranged on the screen frame fixing device.
The automatic register printing machine according to any one of claims 1-4, wherein the reference pattern includes at least two reference positions, and the at least two reference positions are used to adjust the printing screen frame at X Axis, Y1 axis, and Y2 axis direction.
An automatic register printing machine according to claim 5, wherein the marking pattern comprises a cross pattern or a cross circle pattern.
The automatic register printing machine according to claim 5, wherein the screen frame fine-tuning device comprises a first fine-tuning device and a second fine-tuning device, and the first fine-tuning device and the second fine-tuning device are respectively arranged at Both ends of the printing arm;

The screen frame fixing device includes a first support seat and a second support seat, the first support seat is disposed on the first fine-tuning device, and the second support seat is disposed on the second fine-tuning device;

Two ends of the printing screen frame are respectively fixed to the first support base and the second support base;

The first fine-tuning device includes a Y1-axis fine-tuning motor, the second fine-tuning device includes a Y2-axis fine-tuning motor, the first fine-tuning device and/or the second fine-tuning device includes an X-axis fine-tuning motor, and the control device The X-axis fine-tuning motor, the Y1-axis fine-tuning motor and the Y2-axis fine-tuning motor are controlled to adjust the positions of the printing screen frame in the X-axis, Y1-axis and Y2-axis directions, respectively.
An automatic nesting method applied to an automatic nesting printing machine, characterized in that the automatic nesting printing machine includes an image acquisition device and a plurality of printing screen frames;

The method includes:

Printing a marking pattern on the corresponding substrate through the plurality of printing screen frames;

Forming the same reference pattern on the corresponding substrate;

Sequentially acquiring, by the image acquisition device, the marking pattern and the reference pattern on the corresponding substrate;

Acquiring the corresponding offset between the marking pattern and the reference pattern;

The positions of the multiple printing screen frames are sequentially adjusted according to the corresponding offset.
8. The automatic registering method according to claim 8, wherein the forming the same reference pattern on the corresponding substrate comprises:

The reference pattern is formed on the substrate by the image acquisition device.
8. The automatic registering method according to claim 8, wherein the forming the same reference pattern on the corresponding substrate comprises:

The reference pattern is printed on the platen.
A non-volatile computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by an electronic device, the electronic device executes the right The method of any one of 8-10 is required.
A computer program product, characterized in that the computer program product includes a computer program stored on a non-volatile computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by an electronic device , Enabling the electronic device to execute the method according to any one of claims 8-10.