Printing method and device for eliminating joints

Abstract

The invention belongs to the technical field of flat screen printing, and provides a printing method and device for eliminating seams, and the method comprises the following steps: S1, placing a material to be printed on a conveying device, and conveying the material to be printed into a printing system by the conveying device; s2, when the conveying device conveys the to-be-printed material to advance by the single printing length, the conveying device stops conveying the to-be-printed material, and the printing system prints the to-be-printed material; s3, after printing of the printing system is completed, the conveying device continues conveying, and the conveying distance is set to be 1 / 2 of the single-time printing length; s4, the conveying device stops conveying the to-be-printed material, and the printing system continues to print the to-be-printed material; and S5, the steps S3-S4 are repeated, and printing of the whole to-be-printed material is completed. According to the printing method and device for eliminating the joints, the joints between different times of printing can be eliminated, and long printing and high-quality printing of continuous pattern operation can be achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of flat screen printing, and particularly relates to a printing method and device for eliminating seams. Background Art

[0002] A flat screen printing machine is a device specifically used in the textile printing and dyeing field. It uses a flat screen plate as the printing medium. This device applies uniform pressure through a squeegee, accurately pressing the color paste into the fabric fibers, thereby presenting delicate and beautiful patterns on the fabric surface. Its operation mechanism is as follows: First, the fabric is fixed on the conveyor belt, and then it is pulled by the conveyor belt and moved to directly below the flat screen plate. At this time, the squeegee scrapes on the surface of the flat screen plate. With this action, the color paste penetrates and is pressed into the fabric from the pattern area engraved on the flat screen plate, thus completing one printing process. By continuously using multiple flat screen plates with different colors and their respective patterns for overprinting, multi-color patterns with rich layers and colorful colors can be superimposed on the fabric.

[0003] The technology of single printing on fabrics by flat screen printing machines is already very perfect. However, when facing long printing and continuous pattern operations, during the continuous printing process of flat screen printing machines, it is inevitable that seams will occur between each printing. To address this problem, a solution in the prior art is to strive to improve the accuracy of flat screen printing machines in order to minimize the visibility of seams to the greatest extent. Although this method can improve the seam effect to a certain extent, it is often accompanied by high cost investment, and even so, there may still be a relatively obvious light-colored seam left. Another coping strategy is to use rotary screen printing machines or digital printing machines for printing operations. However, these two printing methods are significantly inferior to flat screen printing machines in terms of printing fineness and permeability, and it is difficult to achieve the high-definition and high-permeability pattern effects that flat screen printing machines can achieve. In addition, from an economic perspective, the equipment purchase cost, daily operation and maintenance cost, and operation complexity of rotary screen printing machines and digital printing machines are far higher than those of flat screen printing machines.

[0004] The Chinese patent application with the publication number CN108790383A discloses a flat screen printing machine equipped with a cleaning and drying device, and elaborates on the structural details of this printing machine, as well as the cooperative operation and usage process among its various components. This application aims to provide a printing device capable of printing high-quality patterns. However, its advantages are limited to high-quality performance in single printing and are applicable to application scenarios with less stringent requirements for printing length. When facing the need to print long and continuous patterns, this application shows relatively obvious limitations. Specifically, due to the relatively significant seam marks at the connection of patterns in different prints of this application, and this application does not propose an effective solution to this problem, therefore, this application cannot meet the high-quality requirements of long pattern printing.

[0005] The invention patent with the patent number CN103448359B discloses a pattern alignment system for a flat screen printing machine. This system adjusts the position of the printing screen frame manually to ensure the printing quality of the flat screen printing machine. However, this patent still fails to fundamentally solve the problem of seams existing between different prints. Even after delicate manual adjustment, there will still be slight seam marks between different prints, which will greatly affect the beauty of the final pattern. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a printing method and device for eliminating seams, which can eliminate the seams between different prints and can achieve high-quality printing for long prints and continuous pattern operations.

[0007] The above object of the present invention is achieved by the following technical solutions:

[0008] The present invention provides a printing method for eliminating seams, including the following steps: S1. Place the material to be printed on the conveying device, and the conveying device transports the material to be printed into the printing system; S2. When the conveying device transports the material to be printed forward by the length of a single print, the conveying device pauses transporting the material to be printed, and the printing system prints the material to be printed; S3. After the printing system finishes printing, the conveying device continues to transport, and the set conveying distance is 1 / 2 of the length of a single print; S4. The conveying device pauses transporting the material to be printed, and the printing system continues to print the material to be printed; S5. Repeat steps S3 - S4 to complete the printing of the entire material to be printed.

[0009] According to an embodiment of the present invention, the material of the material to be printed in S1 is one of textile, paper, leather, and plastic film; the conveying device in S1 includes a conveyor belt, a first motor, a cylinder, and a gear. The material to be printed is placed above the conveyor belt. The conveyor belt is used to transport the material to be printed. The first motor is used to drive the conveyor belt to transport the material to be printed. The output shaft of the first motor is connected to the gear. The inner surface of the cylinder is provided with teeth, and the gear meshes with the teeth. The outer surface of the cylinder is a rough outer surface, and the outer surface of the cylinder is attached to the inner side of the conveyor belt; the printing system in S1 is a flat screen printing system, and the flat screen printing system includes at least one flat screen printing machine.

[0010] According to an embodiment of the present invention, the length of a single print in S2 is the maximum length of the pattern that can be printed by the flat screen printing machine in a complete printing process. The interval between adjacent flat screen printing machines is set to N / 2 times the length of a single print, where N is a natural number; in S3, the conveying device is controlled by a control system so that the conveying distance is 1 / 2 of the length of a single print.

[0011] According to an embodiment of the present invention, in S3, the data of the length of a single print of the printing system is obtained manually and input into the control system.

[0012] According to an embodiment of the present invention, in S3, data on the single-printing length of the printing system is obtained through a ranging system, and the ranging system transmits the data to the control system.

[0013] According to an embodiment of the present invention, the specific steps of S3 are as follows: Q1. Manually obtain data on the single-printing length of the printing system; Q2. Input the single-printing length of the printing system into the control system; Q3. After the printing system finishes printing, the control system controls the conveying device to continue conveying the material to be printed, and the conveying distance each time is 1 / 2 of the single-printing length.

[0014] According to an embodiment of the present invention, the specific steps of S3 are as follows: T1. After the printing system finishes printing, the ranging system scans the material to be printed after printing to obtain data on the single-printing length of the printing system; T2. The ranging system transmits the obtained data to the control system; T3. The control system controls the conveying device to continue conveying the material to be printed and sets the conveying distance to 1 / 2 of the single-printing length of the printing system.

[0015] According to an embodiment of the present invention, in S4, the printing system continues to print the material to be printed, and the patterns on the material to be printed will overlap. Set the patterns of the printing system so that the overlapping patterns will form new patterns.

[0016] The present invention also provides a printing device for eliminating seams, which is used to implement the method of the above embodiment, including a control device, a ranging device, a conveying device, a printing system, and a drying device. The control device is respectively connected to and controls the ranging device, the conveying device, and the printing system. The ranging device is used to measure the single-printing length and transmit the data to the control device. The conveying device is used to convey the material to be printed. The printing system is used to print the material to be printed. The drying device is arranged behind the printing system and is used to dry the material to be printed after printing. The control device controls the first conveying distance of the conveying device to be the single-printing length, and the conveying distance for each subsequent conveying is 1 / 2 of the single-printing length.

[0017] According to an embodiment of the present invention, the distance measuring device is a laser distance measuring device. After the first printing of the printing system is completed, the laser distance measuring device irradiates both ends of the pattern of a single printing with laser light, calculates and obtains the length of the single printing, and transmits the length data to the control system. The distance measuring device is also used to measure the distance of the conveying device for transporting the material to be printed, and transmits the distance data to the control device; the control device is a PLC device. After receiving the data signal of the distance measuring device, the PLC device controls the operation of the first motor in the conveying device through an electrical signal, so that the conveying distance in each subsequent conveying in the second and subsequent conveyings of the conveyor belt is 1 / 2 of the length of a single printing; the printing system includes a second motor, a printing screen frame, a screen, a sizing device, and a scraping device. The second motor is connected to and drives the printing screen frame to rise or fall. The screen is arranged inside the printing screen frame. The sizing device is used to apply the color paste onto the screen, and the scraping device is used to transfer the color paste from the screen to the material to be printed.

[0018] The beneficial effects of the present invention compared with the prior art solutions are as follows:

[0019] 1. In the present invention, the conveying device is responsible for transporting the material to be printed. The conveying distance of the material to be printed in each subsequent conveying after the first time is 1 / 2 of the length of a single printing. Therefore, except for the first printing and the last printing, each printing of the printing system can eliminate the seam at the connection between the previous and subsequent printings, thereby eliminating the seams between different printings on the entire material to be printed, and solving the problem of seams existing in long printing operations using a flat screen printing machine.

[0020] 2. The present invention realizes the seam problem that can only be solved by using a rotary screen or digital printing machine in the traditional technology through a flat screen printing machine, so that long printing operations can also have delicate and beautiful patterns. And the present invention expands the use of the flat screen printing machine in long printing operations, and also greatly reduces the cost and time of long printing operations.

[0021] 3. By setting the pattern of the printing system in the present invention, the front half and the rear half of the pattern printed by the printing system will form a new pattern after overlapping, so that the pattern on the finally obtained material to be printed is smooth and delicate, and will not give the user a feeling that the pattern is too abrupt.

[0022] 4. When there is only one flat screen printing machine, for the material to be printed after printing in the present invention, except for the parts with a single-layer pattern at the front and the end with a length of 1 / 2 of a single printing, the other parts of the material to be printed have a consistent double-layer pattern structure, so as to ensure the consistency of the pattern to the greatest extent, facilitate the design of the pattern in the printing system, and at the same time can achieve a good printing effect.

[0023] 5. When there are multiple flat screen printing machines, except for the patterns on the printing materials at the first and last 1 / 2 of the single printing length, the patterns on the other parts of the printing materials are the same. When the present invention realizes the goal of long printing operation, it maintains the unity of patterns in a large range, so that the present invention can be conveniently commercialized. Brief Description of the Drawings

[0024] Figure 1 It is a schematic flow chart of a printing method for eliminating seams provided by the present invention. Detailed Embodiments

[0025] In order to enable those skilled in the art to better understand the solution of the present invention, the following will further describe the present invention in detail with reference to the drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention. The following is only a conceptual description of the specific embodiments of the present invention, and does not limit the embodiments of the present invention. Without departing from the design spirit of the present invention, any adjustments, equivalent replacements, improvements, etc. made by those skilled in the art to various detailed parts of the technical solution of the present invention shall fall within the scope of protection determined by the claims of the present invention.

[0026] Embodiment 1

[0027] Figure 1 Shown is a schematic flow chart of a printing method for eliminating seams of the present invention. In order to more clearly show and explain the technical solution and principle of the present invention, the following will further describe with reference to specific implementation examples and drawings. The steps are as follows:

[0028] In this embodiment, there is only one flat screen printing machine in the printing system.

[0029] S1. Place the printing material on the conveying device, and the conveying device conveys the printing material into the flat screen printing machine. The material of the printing material is generally a textile, but the present invention can also perform printing operations on paper, leather or plastic film.

[0030] S2. When the printing material advances a distance of the single printing length, the flat screen printing machine prints on the printing material.

[0031] When the printing system prints on the printing material for the first time, the length of the printing material passing through the flat screen printing machine will not affect the subsequent processes, but just passing through the single printing length can minimize the waste of the printing material to the greatest extent.

[0032] S3. (1) After the printing system finishes printing, the ranging system scans the printed material to be printed and obtains the data of the single printing length of the printing system. (2) The ranging system transmits the obtained data to the control system. (3) The control system controls the conveying device to continue conveying the material to be printed and controls the conveying distance to be 1 / 2 of the single printing length of the printing system.

[0033] By designing the pattern of the flat screen printing machine, the front half and the rear half of the pattern printed each time by the flat screen printing machine are smoothly connected, and the front half and the rear half of the pattern printed each time can be combined to form a new pattern. As a result, the patterns printed three times by the flat screen printing machine, namely the pattern printed this time, the pattern printed last time, and the pattern printed next time, can be smoothly connected. In this way, the pattern finally presented on the material to be printed is smooth, and there is no seam between the patterns printed by the flat screen printing machine at different times.

[0034] S4. The conveying device pauses conveying the material to be printed, and the flat screen printing machine continues to print the material to be printed.

[0035] Each time the material to be printed moves a distance of 1 / 2 of the single printing length, it can make the pattern printed each time by the flat screen printing machine, except for the first and the last time, cover the seam at the connection of the patterns printed in the previous and the next times. Since the seam at the connection is not particularly obvious, the seam can be eliminated by the coverage of the pattern.

[0036] S5. Repeat steps S3 - S4 to complete the printing of the entire material to be printed.

[0037] After the printing is completed, only 1 / 2 of the single printing length at the frontmost and rearmost ends of the material to be printed is printed once, while the other parts of the material to be printed are printed twice.

[0038] Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that in this embodiment, multiple flat screen printing machines are set, and the information of the single printing length of the printing machine can be obtained in advance.

[0040] S1. Place the material to be printed on the conveying device, and the conveying device conveys the material to be printed through the first flat screen printing machine.

[0041] There are 5 flat screen printing machines in the printing system, and the interval between adjacent flat screen printing machines is set as the single printing length.

[0042] S2. When the conveying device conveys the material to be printed forward by the single printing length, the conveying device pauses conveying the material to be printed, and the printing system prints the material to be printed.

[0043] Design the patterns of different flat screen printing machines so that the first half and the second half of the patterns printed by each flat screen printing machine can be combined to form new patterns, and the patterns of multiple flat screen printing machines

[0044] S3. (1) Obtain the data of the printing system; (2) Input the single-printing length of the printing system into the control system; (3) After the printing system finishes printing, the control system controls the conveying device to continue conveying the material to be printed, and makes the conveying distance be 1 / 2 of the single-printing length.

[0045] When the information of the single-printing length of the printing machine can be directly obtained, there is no need to use the ranging system to obtain the data of the single-printing length, but the control system can be directly used to control the conveying device.

[0046] S4. The conveying device pauses to convey the material to be printed, and the flat screen printing machine continues to print the material to be printed; the material to be printed passes through 5 flat screen printing machines in sequence. When the material to be printed passes through the single-printing length of each flat screen printing machine, the flat screen printing machine starts to perform the printing operation on the material to be printed, so as to ensure that the flat screen printing machine prints the material to be printed each time, effectively preventing the printing paste of the flat screen printing machine from flowing onto the conveying device. Different patterns can be designed on the screens of different flat screen printing machines, so that the patterns on the finally obtained material to be printed are richer in levels.

[0047] S5. Repeat steps S3 - S4 to complete the printing of the entire material to be printed. When the material to be printed leaves the last flat screen printing machine, the printing of the entire material to be printed is considered completed. There are 5 layers of printing on the frontmost and rearmost 1 / 2 single-printing length distances of the final material to be printed, and 10 layers of printing exist in other parts of the material to be printed.

[0048] Embodiment 3

[0049] This embodiment provides a printing device for eliminating seams, including a control device for controlling a ranging device, a conveying device, and a flat screen printing machine, a ranging device for measuring the single-printing length, a conveying device for transporting the material to be printed, a flat screen printing machine for printing, and a drying device for drying the printed material to be printed.

[0050] The control device is a PLC device. When the PLC device obtains the data of the single-printing length transmitted by the laser ranging device, it can control the first motor through an electric signal, and then make the conveying distance in the second and subsequent conveyings of the conveyor belt be 1 / 2 of the single-printing length.

[0051] The distance measuring device is a laser distance measuring device. The laser distance measuring device needs to wait until the first printing of the printing machine is completed before measurement. The laser distance measuring device can also ensure that the advancing distance of the conveyor belt each time is 1 / 2 of the single printing length. One method is to directly manually adjust the angle of the laser distance measuring device so that it irradiates both ends of the single printing pattern respectively. Another method is to additionally set up a camera. By receiving the color information on the material to be printed through the camera, the angle of the laser distance measuring device is adjusted so that it irradiates both ends of the single printing pattern respectively. The laser distance measuring device irradiates both ends of the single printing pattern with laser, and can calculate and obtain the length of the single printing according to the return time of the laser and the included angle of the laser.

[0052] The conveying device includes a first motor and a conveyor belt. A cylinder is provided inside the conveyor belt. The outer surface of the cylinder has a large frictional force, and the cylinder is closely attached to the conveyor belt. Teeth are provided inside the cylinder. A gear is provided outside the first motor, and the teeth are engaged with the gear. The first motor drives the gear to rotate, thereby driving the cylinder to rotate, and further enabling the conveyor belt to convey the material to be printed.

[0053] Multiple flat screen printing machines can be set in the printing device. The flat screen printing machine includes a second motor, a printing screen frame, a screen, a sizing device, and a scraping device. The second motor is used to drive the printing screen frame to rise or fall. The screen is provided inside the printing screen frame, and the screen is the key component that determines the pattern shape. The sizing device includes a color paste tank and a slurry supply pump. The color paste tank is used to store the color paste, and the slurry supply pump is used to spray the color paste in the color paste tank onto the screen. The scraping device includes a scraper, a scraper clamping device, and a scraper driving device. The scraper clamping device is used to fix the scraper to maintain the stability and position accuracy of the scraper during the working process. The scraper driving device is used to drive the scraper clamping device, and further drive the scraper to move on the screen, so that the color paste is transferred from the screen to the material to be printed. The PLC device controls the second motor, the sizing device, and the scraping device respectively, so that the printing device will print the material to be printed when the conveying device stops conveying the material to be printed, and stop printing when the conveying device conveys the material to be printed.

[0054] The drying device is arranged after the flat screen printing machine. The drying device is an infrared drying device, which uses infrared radiation to heat the printed material, so that the internal moisture evaporates rapidly to achieve the drying purpose. The infrared drying device has high heating efficiency, fast drying speed, and little damage to the printed material. When there are multiple flat screen printing machines, a drying device can be selected to be arranged after all the flat screen printing machines to perform an overall drying operation on the material to be printed. It is also possible to arrange a drying device after each flat screen printing machine respectively. Since there will be a large amount of moisture in the pattern, if it is not dried, it is easy to cause interference between the prints of the flat screen printing machines, thus affecting the printing quality. The drying device can also assist different flat screen printing machines to print patterns with different levels and depths.

[0055] Embodiment 4

[0056] This embodiment is about the operation steps of a printing device for eliminating seams. The specific operation steps are as follows:

[0057] Place the material to be printed on the conveyor belt. The PLC device controls the first motor, and then conveys the material to be printed through the conveyor belt. When the material to be printed passes through the flat screen printing machine, the first motor pauses. The PLC device controls the second motor to drive the printing screen frame to descend. When the printing screen frame descends to the appropriate position, the PLC device controls the sizing device to apply the color paste onto the screen mesh, and then the PLC device controls the scraping device to scrape the color paste onto the material to be printed. After the scraping is completed, the PLC device controls the second motor to drive the printing screen frame to rise. The laser ranging device irradiates both ends of the pattern on the material to be printed with laser, calculates to obtain the length of a single printing, and transmits the data of the single printing length to the PLC device.

[0058] The PLC device controls the first motor to continue running, controls the conveyor belt to advance by 1 / 2 of the single printing length through the PLC device, and ensures the accuracy of the advancing distance through the laser ranging device. The first motor stops running, causing the conveyor belt to stop advancing. At this time, the PLC device continues to control the second motor to drive the printing screen frame to descend. When the printing screen frame descends to the appropriate position, the PLC device controls the sizing device to apply the color paste onto the screen mesh, and then the PLC device controls the scraping device to scrape the color paste onto the material to be printed. After the scraping is completed, the PLC device controls the second motor to drive the printing screen frame to rise, and the PLC device controls the first motor to continue running. Repeat the above operations until the entire material to be printed is completed. The material to be printed after printing will pass through the drying device to ensure that the multi-layer color paste can be stably retained on the material to be printed. After drying, a printed product without seams can be obtained.

[0059] The above-described embodiments are only the preferred embodiments of the present invention, rather than all the feasible embodiments of the present invention. For those of ordinary skill in the art, any obvious modifications made without departing from the principles and spirit of the present invention should be considered to be included within the protection scope of the claims of the present invention.

Claims

1. A printing method for eliminating seams, characterized in that It includes the following steps: S1. Place the material to be printed on the conveying device, and the conveying device transports the material to be printed into the printing system; S2. When the conveying device transports the material to be printed forward by the single-printing length, the conveying device pauses to transport the material to be printed, and the printing system prints the material to be printed; S3. After the printing system finishes printing, the conveying device continues to transport, and the set conveying distance is 1 / 2 of the single-printing length; S4. The conveying device pauses to transport the material to be printed, and the printing system continues to print the material to be printed; S5. Repeat steps S3 - S4 to complete the printing of the entire material to be printed.

2. The method for printing to eliminate seams according to claim 1, wherein: The material to be printed in S1 is one of textile, paper, leather, and plastic film; the conveying device in S1 includes a conveyor belt, a first motor, a cylinder, and a gear. The material to be printed is placed above the conveyor belt. The conveyor belt is used to transport the material to be printed. The first motor is used to drive the conveyor belt to transport the material to be printed. The output shaft of the first motor is connected to the gear. The cylinder is provided with teeth inside, and the gear meshes with the teeth. The outer surface of the cylinder is a rough outer surface, and the outer surface of the cylinder is attached to the inner side of the conveyor belt; the printing system in S1 is a flat screen printing system, and the flat screen printing system includes at least one flat screen printing machine.

3. A printing method for eliminating seams according to claim 2, characterized in that: The single-printing length in S2 is the maximum length of the pattern that can be printed by the flat screen printing machine in one complete printing process. The interval between adjacent flat screen printing machines is set to N / 2 times the single-printing length, where N is a natural number; in S3, the conveying device is controlled by a control system so that the conveying distance is 1 / 2 of the single-printing length.

4. A printing method for eliminating seams according to claim 3, characterized in that: In S3, the data of the single-printing length of the printing system is obtained manually and input into the control system.

5. A printing method for eliminating seams according to claim 3, characterized in that: In S3, the data of the single-printing length of the printing system is obtained by a ranging system, and the ranging system transmits the data to the control system.

6. A printing method for eliminating seams according to claim 4, characterized in that: The specific steps of S3 are as follows: Q1. Manually obtain the data of the single-printing length of the printing system; Q2. Input the single-printing length of the printing system into the control system; Q3. After the printing system finishes printing, the control system controls the conveying device to continue transporting the material to be printed and makes the conveying distance 1 / 2 of the single-printing length each time.

7. A printing method for eliminating seams according to claim 5, characterized in that: The specific steps of S3 are as follows: T1. After the printing system finishes printing, the ranging system scans the printed material to be printed to obtain the data of the single-printing length of the printing system; T2. The ranging system transmits the obtained data to the control system; T3. The control system controls the conveying device to continue transporting the material to be printed and sets the conveying distance to 1 / 2 of the single-printing length of the printing system.

8. A printing method for eliminating seams according to claim 1, characterized in that: In S4, the printing system continues to print the material to be printed, and the patterns on the material to be printed will overlap. Set the patterns of the printing system so that the overlapping patterns will form new patterns.

9. A printing device for eliminating seams, which is used to implement the method described in any one of claims 1-8, characterized in that: It includes a control device, a ranging device, a conveying device, a printing system, and a drying device. The control device is respectively connected to and controls the ranging device, the conveying device, and the printing system. The ranging device is used to measure the length of a single printing and transmit the data to the control device. The conveying device is used to convey the material to be printed. The printing system is used to print the material to be printed. The drying device is arranged behind the printing system and is used to dry the printed material to be printed. The control device controls the first conveying distance of the conveying device to be the length of a single printing, and the conveying distance for each subsequent conveying after the first time is 1 / 2 of the length of a single printing.

10. The printing device for eliminating seams according to claim 9, characterized in that: The ranging device is a laser ranging device. After the first printing of the printing system is completed, the laser ranging device irradiates both ends of the pattern of a single printing through laser, obtains the length of a single printing by calculation, and transmits the length data to the control system. The ranging device is also used to measure the distance of the conveying device transporting the material to be printed and transmit the distance data to the control device; The control device is a PLC device. After receiving the data signal from the ranging device, the PLC device controls the operation of the first motor in the conveying device through an electrical signal, so that the conveying distance for each subsequent conveying in the second and subsequent conveyings of the conveyor belt is 1 / 2 of the length of a single printing; The printing system includes a second motor, a printing screen frame, a screen, a sizing device, and a squeegee device. The second motor is connected to and drives the printing screen frame to rise or fall. The screen is arranged inside the printing screen frame. The sizing device is used to apply the color paste onto the screen, and the squeegee device is used to transfer the color paste from the screen to the material to be printed.

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