High-speed and high-precision ink-jet printing equipment for two-dimensional code labels

Abstract

The utility model belongs to the technical field of ink-jet printing, and particularly relates to high-speed and high-precision ink-jet printing equipment for two-dimensional code labels, which comprises a printing table. A printing machine is mounted at the top of the printing table; an unwinding roller is mounted at the end part of the printing table; two guide rollers are installed at the end, away from the unwinding roller, of the printing table. A drying box is fixedly connected to the middle of the printing machine. Two air boxes are fixedly connected to the end part of the drying box; a fan is mounted in the middle of the air bellow; two drainage plates are fixedly connected to the middle of the drying box; the two drainage plates are oppositely arranged in a staggered manner; the drainage plate is arranged in an L shape; a heating wire is mounted in the middle of the drying box; the heating wire is arranged in an arch shape; the heating wire is arranged between the two drainage plates; through the structure, ink drops on the surface of the printed label can be rapidly shrunk and shaped, the situation that the black and white module boundary of the two-dimensional code is fuzzy due to burrs formed after the ink drops to the surface of the label and diffuses to the periphery is reduced, and the two-dimensional code pattern is kept complete.

Description

Technical Field

[0001] This utility model belongs to the field of inkjet printing technology, specifically a high-speed, high-precision inkjet printing device for QR code labels. Background Technology

[0002] QR code labels are a type of label that uses QR codes as information carriers and converts product information into a matrix of squares through graphic encoding technology.

[0003] In packaging production lines for industries such as food, beverages, and daily necessities, inkjet printing is required on different types of label materials. Inkjet printing equipment mainly uses the pressure of an ink supply pump to deliver ink from the ink tank through ink pipelines to the ink gun. When the ink passes through the nozzle, it is broken into a series of continuous, equally spaced, and uniformly sized ink droplets by the action of piezoelectric crystals. The QR code information to be printed is processed by the computer motherboard, and the control system precisely controls the spraying action of the printhead according to the signal, ultimately forming a QR code pattern.

[0004] Traditional QR code label inkjet printing relies on the natural evaporation of solvents after printing. However, the ink remains on the label surface, and the slow evaporation of solvents causes the ink to spread outwards due to gravity or surface tension. This can lead to blurred boundaries between the black and white modules of the QR code and reduced accuracy in inkjet printing.

[0005] Therefore, this utility model provides a high-speed, high-precision inkjet printing device for QR code labels. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A high-speed, high-precision inkjet printing device for QR code labels, comprising a printing table; a printing machine mounted on the top of the printing table; an unwinding roller mounted at the end of the printing table; two guide rollers mounted at the end of the printing table away from the unwinding roller; a drying chamber fixedly connected to the middle of the printing machine; two air boxes fixedly connected to the end of the drying chamber; a fan mounted in the middle of the air boxes; two guide plates fixedly connected to the middle of the drying chamber; the two guide plates are arranged in an opposing and staggered manner; the guide plates are L-shaped; and a heating wire is mounted in the middle of the drying chamber. The heating wire is bow-shaped; the heating wire is positioned between two guide plates; an exhaust duct is provided at the bottom of the drying chamber; a filter screen is fixedly connected to the middle of the exhaust duct; a dust removal component is installed in the middle of the printing machine; a positioning component is installed at one end of the middle of the printing table; the above structure enables the ink droplets on the label surface to quickly shrink and solidify after printing, reducing the spread of ink droplets on the label surface and the formation of rough edges that cause the black and white modules of the QR code to become blurred. The hot airflow can quickly evaporate the solvent in the ink, allowing the ink to solidify instantly at the landing point, keeping the QR code pattern intact, thereby improving printing efficiency and accuracy.

[0008] Preferably, the dust removal assembly includes two collection hoods; the two collection hoods are fixedly connected to the ends of corresponding air boxes; a suction pipe is fixedly connected to the ends of the two collection hoods; a plurality of suction holes are opened in the middle of the suction pipe; the plurality of suction holes are located on the side away from the drying box; two fixing rings are fixedly connected to the middle of the suction pipe; the two fixing rings are fixedly connected to the side wall of the printing machine; a filter plate is fixedly connected to the end of the collection hood near the air box; with the above structure, when the label moves, the fine dust will adhere to the label surface due to airflow disturbance, reducing the problem of ink not being able to adhere evenly to the label surface due to dust and impurities during inkjet printing, reducing the problem of spots on the label printing surface, quickly removing dust particles from the label surface, reducing the loss of QR code modules caused by dust particles, thereby improving the integrity of the pattern.

[0009] Preferably, the positioning component includes a positioning groove; the positioning groove is located on the top of the printing table; an adjustment groove is provided on the top of the positioning groove; two fixing plates are provided in the middle of the positioning groove; two springs are fixedly connected to the bottom of the fixing plates; and a positioning plate is fixedly connected to the top of the fixing plates. This structure ensures the label remains stable during printing, reduces label displacement and deviation during printing, effectively moves the label along a designated path, improves the accuracy of ink printing, and can fix labels of different sizes, increasing the versatility of the equipment.

[0010] Preferably, a sliding rod is slidably connected to the top of the collection hood; a brush strip is fixed to the end of the sliding rod; the brush strip is disposed inside the collection hood; the above structure enables the filter plate to be cleaned regularly, reducing the accumulation of dust and impurities on the surface of the filter plate and preventing blockage, maintaining the smooth flow of air through the middle of the filter plate, and the operation is simple and quick.

[0011] Preferably, a plurality of rollers are installed in the middle of the positioning plate; the plurality of rollers are equidistantly distributed; the plurality of rollers are rotatably connected to the middle of the positioning plate; the above structure can effectively reduce the direct friction between the label and the positioning plate, and reduce the problem of label wear.

[0012] Preferably, two guide plates are fixedly connected to the middle of the suction pipe; the two guide plates are arranged opposite each other; the two guide plates are arranged on both sides of multiple suction holes; the above structure can effectively guide the flow direction of airflow and dust and impurities, so that dust and airflow accurately enter the suction pipe through multiple suction holes, thereby increasing the dust removal effect on the label.

[0013] The beneficial effects of this utility model are:

[0014] The present invention provides a high-speed, high-precision inkjet printing device for QR code labels. Through the above structure, the ink droplets on the surface of the label after printing can be quickly contracted and shaped, reducing the spread of ink droplets on the label surface and the formation of rough edges that cause the black and white modules of the QR code to become blurred. The hot airflow can quickly evaporate the solvent in the ink, so that the ink can be instantly solidified at the landing point, keeping the QR code pattern intact, thereby improving the printing efficiency and accuracy.

[0015] The present invention discloses a high-speed, high-precision inkjet printing device for QR code labels. Through the above-mentioned structure, when the label moves, tiny dust particles will adhere to the label surface due to airflow disturbance. This reduces the problem of ink not being able to adhere evenly to the label surface due to dust and impurities during inkjet printing, thus reducing the problem of spots appearing on the label printing surface. It also quickly removes dust particles from the label surface, reducing the number of missing QR code modules caused by dust particles, thereby improving the integrity of the pattern. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the drying oven in this utility model;

[0018] Figure 3 This is a cross-sectional view of the collection cover in this utility model;

[0019] Figure 4 This is an exploded view of the positioning component in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Printing table; 10. Printing press; 11. Unwind roller; 12. Guide roller; 13. Drying oven; 14. Air box; 15. Fan; 16. Drainage plate; 17. Heating wire; 18. Exhaust duct; 19. Filter screen; 2. Dust removal assembly; 21. Collection hood; 22. Suction pipe; 23. Suction hole; 24. Filter plate; 25. Fixing ring; 3. Positioning assembly; 31. Positioning groove; 32. Adjustment groove; 33. Spring; 34. Fixing plate; 35. Positioning plate; 4. Slide bar; 41. Brush strip; 5. Roller; 6. Drainage plate; 7. Observation plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 4As shown, an embodiment of the present invention provides a high-speed, high-precision inkjet printing device for QR code labels, comprising a printing table 1; a printing press 10 mounted on top of the printing table 1; an unwinding roller 11 mounted at the end of the printing table 1; two guide rollers 12 mounted at the end of the printing table 1 away from the unwinding roller 11; a drying chamber 13 fixedly connected to the middle of the printing press 10; two air boxes 14 fixedly connected to the end of the drying chamber 13; a fan 15 mounted in the middle of the air box 14; and two guide plates 16 fixedly connected to the middle of the drying chamber 13; the two guide plates 16 are arranged in an opposing and staggered manner. The flow plate 16 is L-shaped; a heating wire 17 is installed in the middle of the drying chamber 13; the heating wire 17 is bow-shaped; the heating wire 17 is located between the two flow plates 16; an exhaust duct 18 is opened at the bottom of the drying chamber 13; a filter screen 19 is fixed in the middle of the exhaust duct 18; a dust removal component 2 is installed in the middle of the printing machine 10; a positioning component 3 is installed at one end of the middle of the printing table 1; during operation, the label is placed in the middle of the unwinding roller 11, and the label is driven into the printing machine 10 for conveying through the drive system, and the label moves between the guide rollers 12. The ink is sprayed into the label substrate surface in the form of tiny droplets by the inkjet printhead inside the printing press 10. The ink is precisely positioned and deposited according to the preset QR code pattern. After the label inkjet printing is completed, it is removed from the middle of the printing press 10. The fan 15 is turned on to allow airflow into the drying chamber 13. The heating wire 17 is turned on to heat the surface. The airflow at both ends of the drying chamber 13 is guided by the guide plate 16 to pass over the surface of the heating wire 17, which heats the airflow. The airflow passes through the two guide plates 16 to increase the contact time with the heating wire 17. The heated airflow is finally discharged to the bottom of the drying chamber 13 and discharged through the exhaust duct 18 to blow onto the printed label surface, so that the printed surface is dried quickly. At the same time, the hot airflow is filtered by the filter screen 19. Through the above structure, the ink droplets on the surface of the label after printing can be quickly contracted and shaped, reducing the spread of ink after dripping onto the label surface and forming rough edges that cause the black and white modules of the QR code to be blurred. The hot airflow can quickly evaporate the solvent in the ink, so that the ink is instantly solidified at the landing point, keeping the QR code pattern intact, thereby improving the printing efficiency and accuracy.

[0024] like Figures 1 to 3As shown, the dust removal assembly 2 includes two collection hoods 21; the two collection hoods 21 are fixed to the ends of the corresponding air boxes 14; a suction pipe 22 is fixed to the ends of the two collection hoods 21; the suction pipe 22 has multiple suction holes 23 in the middle; the multiple suction holes 23 are located on the side away from the drying chamber 13; two fixing rings 25 are fixed to the middle of the suction pipe 22; the two fixing rings 25 are fixed to the side wall of the printing machine 10; a filter plate 24 is fixed to the end of the collection hood 21 near the air box 14; during operation, air is blown into the drying chamber 13 by two fans 15, and a negative pressure airflow is formed inside the suction pipe 22 through the collection hood 21. During the movement of the label during inkjet printing, the negative pressure airflow passes through the multiple suction holes 23 to remove the label surface. Dust and impurities are drawn in, and the negative pressure airflow enters the collection hood 21 through the suction pipe 22. The impurities are intercepted and collected by the filter plate 24, while the clean airflow dries the printed label through the fan 15. The suction pipe 22 is fixed and supported by the fixing ring 25, thereby achieving continuous cleaning of the label surface. With the above structure, when the label moves, the fine dust will adhere to the label surface due to airflow disturbance, reducing the problem of ink not being able to adhere evenly to the label surface due to dust and impurities during inkjet printing, reducing the problem of spots on the label printing surface, quickly removing dust particles from the label surface, reducing the loss of QR code modules caused by dust particles, and thus improving the integrity of the pattern.

[0025] like Figure 1 and Figure 4 As shown, the positioning component 3 includes a positioning groove 31; the positioning groove 31 is formed on the top of the printing table 1; an adjustment groove 32 is formed on the top of the positioning groove 31; two fixing plates 34 are provided in the middle of the positioning groove 31; two springs 33 are fixedly connected to the bottom of the fixing plates 34; a positioning plate 35 is fixedly connected to the top of the fixing plates 34; during operation, according to the size of the label, the positioning plate 35 is pressed downward, the two springs 33 elastically contract, and the positioning plate 35 is rotated so that the fixing plate 34 corresponds to the bottom of the adjustment groove 32. When the fixing plate 34 enters the bottom of the adjustment groove 32, the springs 33 return to their original position. At this time, the fixing plate 34 is placed in the adjustment groove. The middle part of 32 slides to adjust the position of the positioning plate 35. After the positioning plate 35 is moved to the designated position, it is pressed down and rotated. The elastic pressure of the spring 33 causes the fixing plate 34 to push upward, thereby fixing the positioning plate 35 in the designated position. The two positioning plates 35 position the two sides of the label. The above structure can keep the label stable during printing, reduce the displacement and deviation of the label during the printing process, effectively make the label move along the designated route, improve the accuracy of ink printing, and fix labels of different sizes, increasing the versatility of the equipment.

[0026] like Figure 3As shown, a sliding rod 4 is slidably connected to the top of the collection cover 21; a brush strip 41 is fixed to the end of the sliding rod 4; the brush strip 41 is set inside the collection cover 21; during operation, after dust removal from the label surface, the sliding rod 4 is pulled upwards, causing the sliding rod 4 to slide on the top of the collection cover 21. As the sliding rod 4 moves, the surface of the filter plate 24 is cleaned by the brush strip 41, keeping the pores of the filter plate 24 unobstructed. Through the above structure, the filter plate 24 can be cleaned regularly, reducing the accumulation of dust and impurities on the surface of the filter plate 24 and preventing blockage, keeping the airflow unobstructed through the middle of the filter plate 24, and the operation is simple and quick.

[0027] like Figure 4 As shown, multiple rollers 5 are installed in the middle of the positioning plate 35; the multiple rollers 5 are equidistantly distributed; the multiple rollers 5 are rotatably connected to the middle of the positioning plate 35; during operation, after the two positioning plates 35 position the two sides of the label, as the label printing continues to move, the rollers 5 rotate with the label in the middle of the positioning plate 35. The above structure can effectively reduce the direct friction between the label and the positioning plate 35, and reduce the problem of label wear.

[0028] like Figure 2 As shown, two guide plates 6 are fixedly connected to the middle of the suction pipe 22; the two guide plates 6 are arranged opposite each other; the two guide plates 6 are arranged on both sides of multiple suction holes 23; during operation, when the negative pressure airflow suctions the label surface, the two guide plates 6 guide the airflow and dust impurities into the middle of the multiple suction holes 23. Through the above structure, the flow direction of airflow and dust and impurities can be effectively guided, so that dust and airflow accurately pass through multiple suction holes 23 and enter the interior of the suction pipe 22, thereby increasing the dust removal effect on the label.

[0029] like Figure 1 As shown, the side wall of the collection hood 21 is provided with an observation plate 7; the observation plate 7 is located on the side close to the filter plate 24; the observation plate 7 is made of transparent material; during operation, the inside of the collection hood 21 can be directly observed through the observation plate 7, and the impurity interception situation in the middle of the filter plate 24 can be checked at any time. Through the above structure, the filtration situation on the surface of the filter plate 24 can be directly observed, and the filter plate 24 can be cleaned in time to keep the surface of the filter plate 24 unobstructed.

[0030] During operation, the label is placed in the middle of the unwind roller 11. The drive system propels the label into the printing press 10 for transport. The label moves between the guide rollers 12, and the inkjet printhead inside the printing press 10 sprays ink in the form of tiny droplets onto the surface of the label substrate, precisely positioning and depositing according to the preset QR code pattern. After inkjet printing is completed, the label is removed from the middle of the printing press 10. The fan 15 is turned on to allow airflow into the drying chamber 13, and the heating wire 17 is turned on to raise the surface temperature. The airflow at both ends of the drying chamber 13 is guided by the guide plates 16 to pass over the surface of the heating wire 17, raising the airflow temperature. The airflow passes through the two guide plates 16 to increase contact with the heating wire 17. During the inkjet printing process, the heated airflow is finally discharged to the bottom of the drying chamber 13, exits through the exhaust duct 18, and blows onto the printed label surface, allowing the printed surface to dry quickly. Simultaneously, the hot airflow is filtered by the filter screen 19. Two fans 15 blow air into the drying chamber 13, and the collection hood 21 creates a negative pressure airflow inside the suction pipe 22. During the label's movement during inkjet printing, the negative pressure airflow passes through multiple suction holes 23, drawing in dust and impurities from the label surface. The drawn-in negative pressure airflow enters the collection hood 21 through the suction pipe 22, where the filter plate 24 intercepts and collects the drawn-in impurities. The clean airflow is then used by the fans 15 to further clean the printed labels. The drying process is achieved by fixing the suction pipe 22 with the fixing ring 25, thus enabling continuous cleaning of the label surface. Depending on the label size, the positioning plate 35 is pressed downwards, causing the two springs 33 to elastically contract. Rotating the positioning plate 35 aligns the fixing plate 34 with the bottom of the adjustment groove 32. Once the fixing plate 34 enters the bottom of the adjustment groove 32, the springs 33 return to their original position. The fixing plate 34 is then slid in the middle of the adjustment groove 32 to adjust the position of the positioning plate 35. After moving the positioning plate 35 to the designated position, it is pressed downwards and rotated again. The elastic pressure of the springs 33 causes the fixing plate 34 to push upwards, thus fixing the positioning plate 35 in the designated position. After the label is positioned on both sides by two positioning plates 35 and the label surface is dusted, the slide bar 4 is pulled upward to slide on the top of the collection cover 21. As the slide bar 4 moves, the surface of the filter plate 24 is cleaned by the brush bar 41 to keep the pores of the filter plate 24 unobstructed. After the label is positioned on both sides by two positioning plates 35, as the label printing continues to move, the roller 5 rotates with the label in the middle of the positioning plate 35. When the negative pressure airflow sucks dust from the label surface, the two guide plates 6 guide the airflow and dust impurities into the middle of the multiple dust suction holes 23. The inside of the collection cover 21 can be directly observed through the observation plate 7 to check the impurity interception in the middle of the filter plate 24 at any time.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-speed high-precision inkjet printing equipment for two-dimensional code label, comprising a printing table (1), characterized in that: The printing platform (1) top is provided with a printing machine (10), the printing platform (1) end is provided with a unwinding roller (11), the printing platform (1) is provided with two guide rollers (12) away from the unwinding roller (11) one end, the printing machine (10) middle is fixedly connected with a drying box (13), the drying box (13) end is fixedly connected with two wind boxes (14), the wind box (14) middle is provided with a fan (15), the drying box (13) middle is fixedly connected with two guide plates (16), two the guide plates (16) are oppositely staggered, the guide plate (16) is L-shaped, the drying box (13) middle is provided with a heating wire (17), the heating wire (17) is arc-shaped, the heating wire (17) is arranged between two guide plates (16), the drying box (13) bottom is provided with an exhaust slot (18), the exhaust slot (18) middle is fixedly connected with a filter screen (19), the printing machine (10) middle is provided with a dust removal assembly (2), the printing platform (1) middle one end is provided with a positioning assembly (3).

2. The high-speed and high-precision inkjet printing equipment for two-dimensional code label according to claim 1, characterized in that: The dust removal assembly (2) includes two collecting covers (21), two collecting covers (21) are fixedly connected to the corresponding wind box (14) end, the two collecting covers (21) are fixedly connected with a dust suction pipe (22) at the end, the dust suction pipe (22) is provided with a plurality of dust suction holes (23) in the middle, a plurality of dust suction holes (23) are arranged away from the drying box (13) side, the dust suction pipe (22) is fixedly connected with two fixed rings (25) in the middle, two fixed rings (25) are fixedly connected to the side wall of the printing machine (10), the collecting cover (21) is fixedly connected with a filter plate (24) close to the wind box (14) one end.

3. The high-speed and high-precision inkjet printing device for two-dimensional code label according to claim 1, characterized in that: The positioning assembly (3) includes a positioning groove (31), the positioning groove (31) is provided in the top of the printing platform (1), the positioning groove (31) is provided with an adjusting groove (32) in the top, the positioning groove (31) is provided with two fixed plates (34) in the middle, the fixed plate (34) is fixedly connected with two springs (33) at the bottom, the fixed plate (34) is fixedly connected with a positioning plate (35) at the top.

4. The high-speed and high-precision inkjet printing device for two-dimensional code label according to claim 2, characterized in that: The collecting cover (21) top is slidably connected with a slide rod (4), the slide rod (4) end is fixedly connected with a brush strip (41), the brush strip (41) is arranged in the collecting cover (21) inside.

5. The high-speed and high-precision inkjet printing device for two-dimensional code label according to claim 3, characterized in that: The positioning plate (35) is provided with a plurality of rollers (5) in the middle, a plurality of rollers (5) are equidistantly distributed, a plurality of rollers (5) are rotatably connected in the middle of the positioning plate (35).

6. The high-speed and high-precision inkjet printing device for two-dimensional code label according to claim 2, characterized in that: The dust suction pipe (22) is fixedly connected with two guide plates (6) in the middle, two guide plates (6) are oppositely arranged, two guide plates (6) are arranged on both sides of a plurality of dust suction holes (23).

7. The high-speed and high-precision inkjet printing device for two-dimensional code label according to claim 2, characterized in that: The collecting cover (21) side wall is provided with an observation plate (7), the observation plate (7) is arranged close to the filter plate (24) side, the observation plate (7) is of transparent material.

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