Multi-jet array type concave printing and coding integrated module

Abstract

The utility model relates to the intaglio printing code spraying technical field, concretely relates to a kind of multi-jet array formula intaglio printing code spraying integrated module, further comprising ink tank and ink jet subassembly;Ink tank is equipped with ink recovery port, ink outlet and the flow guide groove body matched with ink recovery port;The bottom of flow guide groove body is formed with the liquid leakage port located above ink recovery port;Flow guide groove body forms two upper extension flow guide plates, two flow guide plates are symmetrically arranged with the vertical plane determined by the axis of compression roller and the axis of concave roller as symmetry plane, and two flow guide plates respectively extend to the direction away from symmetry plane;Ink jet subassembly is equipped with several nozzles between concave roller and flow guide groove body, all nozzles are equidistantly spaced along the axis direction of concave roller arrangement.The way of array formula nozzle to concave plate on the ink spraying mode greatly reduces the usage amount of ink, and combined with the ink tank with flow guide groove body can recycle redundant ink in time, greatly avoid the waste of ink.

Description

Technical Field

[0001] This utility model relates to the field of gravure printing and coding technology, specifically to a multi-head array gravure printing and coding integrated module. Background Technology

[0002] Gravure inkjet printing is a coding technology commonly used in the field of industrial marking. Its working principle combines the characteristics of gravure printing and inkjet printing technology. It can form clear and durable markings on the surface of various materials. It is based on the "engraving and debossing" concept of gravure printing, which sprays ink or other marking materials onto the surface of the substrate to form preset text, patterns, barcodes and other information.

[0003] Currently, when performing gravure printing on paper, ink needs to be poured onto the gravure cylinder first, and then the ink in the grooves is pressed onto the paper. This requires a large amount of ink to be poured onto the gravure cylinder, but a large amount of excess ink flowing down from the cylinder cannot be used, which increases the operating cost of the gravure printing integrated module. Utility Model Content

[0004] To address the aforementioned issues, a multi-head array gravure inkjet printing integrated module is provided, which greatly reduces ink waste.

[0005] To address the problems of existing technologies, this utility model provides a multi-head array gravure inkjet printing integrated module, including a pressure roller and a concave roller disposed below the pressure roller, as well as an ink storage tank and an inkjet assembly. The ink storage tank is disposed directly below the concave roller, and the ink storage tank has an ink recovery port, an ink outlet, and a guide channel that cooperates with the ink recovery port. A drain port is formed at the bottom of the guide channel above the ink recovery port. The guide channel has two upwardly extending guide plates, which are symmetrically arranged with respect to a vertical plane determined by the axis of the pressure roller and the axis of the concave roller as the plane of symmetry, and the two guide plates extend in a direction away from the plane of symmetry. The inkjet assembly has a plurality of printheads located between the concave roller and the guide channel, and all printheads are arranged at equal intervals along the axial direction of the concave roller.

[0006] Preferably, the flow guide channel is composed of a number of closely arranged flow guide units, and each collection hopper is equipped with a nozzle on its top.

[0007] Preferably, the flow guiding unit has a through-section at both ends, and the bottom of all flow guiding units constitutes the leakage port; the left and right sides of the flow guiding unit form mating surfaces for adjacent flow guiding units to be in close contact; the bottom of the front and rear sides of the flow guiding unit has connecting ears for connecting with the ink storage box; the top of the front and rear sides of the flow guiding unit has inclined upward side plates, and the edges of the side plates on the same side of adjacent flow guiding units are in close contact to form the flow guiding plate.

[0008] Preferably, a support plate is formed inside the flow guide unit, and the nozzle is mounted on top of the support plate.

[0009] Preferably, the top of the ink storage box has a positioning groove that mates with the connecting lug, and the bottom of the positioning groove has a threaded hole for tightening the connecting lug.

[0010] Preferably, a rubber pad is sandwiched between the mating surfaces of two adjacent flow guide units.

[0011] Preferably, the inkjet assembly further includes a pump body and an ink supply manifold. The input end of the pump body is connected to the ink outlet via a pipe. The input end of the ink supply manifold is connected to the output end of the pump body, and the output end of the ink supply manifold forms an ink supply branch pipe connected to the printhead.

[0012] Compared with the prior art, the advantages of this utility model are: by spraying ink onto the concave plate with an array of printheads, the amount of ink used is greatly reduced, and at the same time, the ink storage box with a guide groove can recover excess ink in time, which greatly avoids ink waste. Attached Figure Description

[0013] Figure 1 This utility model relates to a three-dimensional multi-nozzle array gravure inkjet printing integrated module. Figure 1 .

[0014] Figure 2 This utility model relates to a three-dimensional multi-nozzle array gravure inkjet printing integrated module. Figure 1 .

[0015] Figure 3 This is a three-dimensional view of the flow guiding unit in a multi-nozzle array gravure inkjet printing integrated module of this utility model.

[0016] Figure 4 This is a perspective view of the ink storage tank in a multi-nozzle array gravure inkjet printing integrated module of this utility model.

[0017] The numbers in the diagram are: 1. Pressure roller; 2. Concave roller; 3. Ink storage box; 3a. Ink recovery port; 3b. Ink outlet; 3c. Positioning groove; 4. Guide channel body; 5. Guide unit; 5a. Connecting ear; 5b. Side plate; 5c. Support plate; 6. Printhead; 7. Ink supply main pipe; 8. Rubber pad. Detailed Implementation

[0018] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0019] Reference Figure 1 and Figure 2As shown, a multi-head 6-array gravure inkjet printing integrated module includes a pressure roller 1 and a concave roller 2 disposed below the pressure roller 1, as well as an ink reservoir 3 and an inkjet assembly. The ink reservoir 3 is disposed directly below the concave roller 2, and the ink reservoir 3 has an ink recovery port 3a, an ink outlet 3b, and a guide channel 4 that cooperates with the ink recovery port 3a. The bottom of the guide channel 4 forms a drain port located above the ink recovery port 3a. The guide channel 4 has two upwardly extending guide plates, which are symmetrically arranged with respect to a vertical plane determined by the axis of the pressure roller 1 and the axis of the concave roller 2 as the plane of symmetry, and the two guide plates extend in a direction away from the plane of symmetry. The inkjet assembly has a plurality of printheads 6 located between the concave roller 2 and the guide channel 4, and all printheads 6 are arranged at equal intervals along the axial direction of the concave roller 2.

[0020] When performing gravure printing on paper, the pump and printing press are turned on simultaneously. The pump delivers ink to the printhead 6 via the ink supply manifold 7. The printhead 6 then sprays the ink onto the rotating gravure roller 2, ensuring a uniform ink coverage. Simultaneously, the operator uses a tool (such as a scraper) to scrape off excess ink from the gravure roller 2. The scraped-off excess ink drips down into the guide channel 4 and flows through the drain into the ink storage tank 3. It is important to note that the operator must use experience to avoid the printhead 6 located below the gravure roller 2 to prevent ink drips onto it and cover the nozzles, ensuring unobstructed flow for the next use. Excess ink on the gravure roller 2 is promptly recovered into the ink storage tank 3 via the guide channel 4, preventing it from dripping onto the gravure printing press and effectively avoiding ink waste.

[0021] refer to Figure 2 and Figure 3 As shown, the flow guide trough 4 is composed of several closely arranged flow guide units 5, and a nozzle 6 is installed on the top of each collection hopper. Specifically, the flow guide trough 4 has a split structure, with multiple flow guide units 5 closely arranged along the axis of the concave roller 2. The flow guide units 5 have a through-section, and the bottom of all flow guide units 5 forms the liquid outlet; the left and right sides of the flow guide units 5 form mating surfaces for adjacent flow guide units 5 to be in close contact; the bottom of the front and rear sides of the flow guide units 5 forms connecting ears 5a for connecting with the ink storage box 3; the top of the front and rear sides of the flow guide units 5 forms inclined upward side plates 5b, and the edges of the side plates 5b on the same side of two adjacent flow guide units 5 are in close contact to form the flow guide plate. A support plate 5c is formed inside the flow guide unit 5, and the nozzle 6 is installed on the top of the support plate 5c. More specifically, since the printhead 6 is directly mounted on the flow guide unit 5, and the flow guide unit 5 is detachably connected to the ink reservoir 3, the replacement, maintenance and cleaning of the printhead 6 are more convenient.

[0022] Reference Figure 3 As shown, the top of the ink reservoir 3 has a positioning groove 3c that mates with the connecting lug 5a. The bottom of the positioning groove 3c has a threaded hole for tightening the connecting lug 5a. A rubber pad 8 is sandwiched between the mating surfaces of two adjacent flow guide units 5. The mating of the connecting lug 5a and the positioning groove 3c ensures the installation accuracy of the flow guide unit 5. When the flow guide unit 5 is tightened by engaging the bolt with the threaded hole in the positioning groove 3c, the tightening process causes the two adjacent flow guide units 5 to squeeze the rubber pad 8 between them, ensuring that there is no leakage gap between the two adjacent flow guide units 5 and preventing ink from leaking into the gravure printing press from the leakage gap.

[0023] Reference Figure 1 and Figure 3 As shown, the inkjet assembly also includes a pump body and an ink supply manifold 7. The input end of the pump body is connected to the ink outlet 3b through a pipe. The input end of the ink supply manifold 7 is connected to the output end of the pump body, and the output end of the ink supply manifold 7 forms an ink supply branch pipe that is connected to the printhead 6.

[0024] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A multi-nozzle array gravure inkjet printing integrated module, comprising a pressure roller (1) and a concave roller (2) disposed below the pressure roller (1), characterized in that, Also includes: The ink storage box (3) is located directly below the concave roller (2). The ink storage box (3) is provided with an ink recovery port (3a), an ink outlet (3b), and a guide groove (4) that cooperates with the ink recovery port (3a). The bottom of the guide channel (4) has a drain outlet located above the ink recovery port (3a); The guide channel (4) has two upwardly extending guide plates. The two guide plates are symmetrically arranged with respect to the vertical plane determined by the axis of the pressure roller (1) and the axis of the concave roller (2). The two guide plates extend away from the plane of symmetry. The inkjet assembly has a plurality of printheads (6) located between the concave roller (2) and the guide groove (4), and all printheads (6) are arranged at equal intervals along the axial direction of the concave roller (2).

2. The multi-head array gravure inkjet printing integrated module according to claim 1, characterized in that, The flow guide trough (4) is composed of several closely arranged flow guide units (5), and each collection hopper is equipped with a nozzle (6) on top.

3. The multi-head array gravure inkjet printing integrated module according to claim 2, characterized in that, The flow guiding unit (5) is arranged with its upper and lower sections connected, and the bottom of all the flow guiding units (5) constitutes the leakage port; The left and right sides of the flow guide unit (5) form a mating surface for two adjacent flow guide units (5) to be closely attached; The bottom of the front and rear sides of the flow guide unit (5) is provided with connecting ears (5a) for connecting with the ink storage box (3); The top of the front and rear sides of the flow guide unit (5) is formed with an inclined upward side plate (5b), and the edges of the side plates (5b) on the same side of two adjacent flow guide units (5) are closely attached to form the flow guide plate.

4. The multi-head array gravure inkjet printing integrated module according to claim 3, characterized in that, A support plate (5c) is formed inside the flow guide unit (5), and the nozzle (6) is installed on the top of the support plate (5c).

5. A multi-head array gravure inkjet printing integrated module according to claim 4, characterized in that, The top of the ink storage box (3) is formed with a positioning groove (3c) that mates with the connecting ear (5a), and the bottom of the positioning groove (3c) is provided with a threaded hole for tightening the connecting ear (5a).

6. The multi-nozzle array gravure inkjet printing integrated module according to claim 5, characterized in that, A rubber pad (8) is sandwiched between the mating surfaces of two adjacent flow guide units (5).

7. A multi-head array gravure inkjet printing integrated module according to any one of claims 1-6, characterized in that, The inkjet assembly also includes: The pump body has its input end connected to the ink outlet (3b) via a pipe; The main ink supply pipe (7) has an input end connected to the output end of the pump body, and the output end of the main ink supply pipe (7) forms an ink supply branch pipe connected to the print head (6).

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