Ink conveying system of gravure printing equipment and gravure printing equipment

Abstract

The utility model relates to an ink conveying system of gravure printing equipment and the gravure printing equipment. The ink conveying system can comprise an intaglio roller, wherein an intaglio structure is arranged on the outer surface of the intaglio roller; the ink transfer roller is in rotating contact with the gravure roller; the ink box is used for containing ink; the ink is in contact with the outer surface of the ink transfer roller; the rubber roller is connected with the air cylinder, and the rubber roller is in pressure contact with the gravure roller through the air cylinder; the pressure contact between the rubber roller and the gravure roller is used for conveying ink on the gravure structure to the textile. According to the technical scheme provided by the utility model, the ink conveying uniformity and precision can be improved, the ink transfer efficiency is enhanced, the printing quality of textiles is improved, the conditions of skip printing, virtual printing and the like are avoided, and the printing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of printing machine technology, and in particular to an ink supply system and gravure printing equipment. Background Technology

[0002] Currently, the main methods used in textile printing include screen printing (referred to as "screen printing") and digital inkjet printing (referred to as "digital inkjet printing"). However, both methods have certain limitations in practical applications:

[0003] For lightweight fabrics, such as nylon, polyester, and silk weighing less than 50 grams, screen printing can easily result in uneven ink penetration and pattern distortion, leading to poor final printing results.

[0004] Digital inkjet printing can only achieve surface coloring and struggles to penetrate deep into the ink, a significant drawback for applications requiring high penetration. Secondly, digital printing technology is expensive, with both the equipment itself and consumables being costly. Furthermore, digital printing equipment is typically complex, making repairs difficult in case of malfunction, which undoubtedly increases long-term operating costs and risks. Utility Model Content

[0005] To address at least one of the aforementioned technical problems, this utility model provides an inking system for gravure printing equipment and the gravure printing equipment itself. The technical solution of this utility model is as follows:

[0006] According to a first aspect of the present invention, an ink supply system for a gravure printing apparatus is provided, comprising: a gravure roller having a gravure structure disposed on its outer surface; an ink transfer roller having rotatable contact with the gravure roller; an ink cartridge containing ink; the ink having contact with the outer surface of the ink transfer roller; and a rubber roller connected to a cylinder, the rubber roller having pressure contact with the gravure roller via the cylinder; wherein the pressure contact between the rubber roller and the gravure roller is used to transfer the ink on the gravure structure to the textile.

[0007] In one possible implementation, the ink supply system also includes a doctor blade and a doctor blade support frame, the doctor blade being detachably connected to the ink cartridge; the doctor blade is detachably connected to the doctor blade support frame, and the doctor blade is used to scrape off ink from the surface of the gravure roller.

[0008] In one possible implementation, the ink supply system also includes a level sensor located in the ink cartridge to monitor the ink level.

[0009] In one possible implementation, the ink supply system further includes a feed guide roller and an output guide roller, with the feed guide roller located on one side of the rubber roller and the output guide roller located on the other side of the rubber roller.

[0010] In one possible implementation, the ink delivery system also includes a material tank, a delivery motor, a delivery pump, and a delivery pipe; the material tank and the delivery pipe form a closed ink delivery channel; the delivery pump is connected to the delivery pipe, and the delivery motor drives the delivery pump to deliver ink to the ink cartridge.

[0011] According to a second aspect of the present invention, a gravure printing apparatus is provided, comprising the inking system described in any of the above embodiments.

[0012] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the present invention.

[0013] The technical solutions provided by the embodiments of this utility model bring at least the following beneficial effects:

[0014] By setting the gravure structure on the outer surface of the gravure roller, the storage and transfer amount of ink can be precisely controlled, thereby achieving precise quantitative transmission of abrasive during textile printing and improving ink uniformity and accuracy.

[0015] The ink transfer roller rotates and contacts the gravure roller, enabling the ink to be efficiently transferred from the ink cartridge to the gravure structure of the gravure roller, avoiding problems such as uneven ink supply or ink interruption that occur in traditional ink feeding, and improving the stability of printing.

[0016] The contact between the ink and the outer surface of the ink transfer roller ensures the continuity of ink supply and avoids situations such as ink interruption.

[0017] The rubber rollers are in pressure contact with the gravure rollers via cylinders, and the air pressure can be flexibly adjusted according to textiles of different thicknesses or materials, improving the flexibility of the ink supply system. At the same time, the overall ink supply system has a compact structure, is easy to maintain, reduces equipment costs, and extends service life.

[0018] Other features and aspects of the present invention will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions and advantages in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of an inking system for a gravure printing apparatus according to an exemplary embodiment.

[0021] Figure 2This is a structural diagram of an ink cartridge according to an exemplary embodiment.

[0022] Figure 3 This is a system block diagram illustrating an inking system of a gravure printing apparatus according to an exemplary embodiment.

[0023] In the picture,

[0024] 1-Glue roller, 2-Gravure roller, 3-Ink transfer roller, 4-Doctor blade, 5-Ink cartridge, 6-Infeed guide roller, 7-Outfeed guide roller, 8-Feeding pipe, 9-Cylinder, 10-Feeding pump, 11-PLC controller, 12-Material bucket, 13-Liquid level sensor, 14-Roller. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in the specification, and not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0027] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0028] The term "exemplary" as used herein means "serving as an example, embodiment, or illustration." Any embodiment illustrated herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments. The term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more of a plurality, for example, including at least one of A, B, and C, which can represent including any one or more elements selected from the set consisting of A, B, and C.

[0029] Unless otherwise specified, the directions in this article should be understood as follows: the direction closer to the user is forward, and the direction farther from the user is backward.

[0030] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this utility model.

[0031] It should be noted that the following diagram shows one possible sequence of steps, and it is not strictly necessary to follow this order. Some steps can be executed in parallel without interdependence.

[0032] Before introducing the method embodiments provided by this utility model, a brief introduction will be given on the application scenarios, related terms or nouns that may be involved in the method embodiments of this utility model, so as to facilitate the understanding of those skilled in the art.

[0033] Printing equipment is a mechanical device used to transfer designs onto textiles. It is widely used in clothing, home décor, and other industries that require fabric printing. Based on different technical principles and application scenarios, printing equipment can be mainly divided into the following types:

[0034] Gravure printing machines use a cylindrical screen with an engraved pattern. As the cylinder rotates, ink is forced into the textile. This technology combines the advantages of screen printing and roller printing, achieving high production efficiency and good print quality, and is especially suitable for printing continuous patterns.

[0035] Screen printing is a traditional printing method that uses a taut screen to transfer ink onto textiles. This type of machine is suitable for mass production, can handle a wide variety of complex patterns, and is compatible with many types of dyes.

[0036] Digital inkjet printers use computer-controlled printheads to directly spray ink onto fabric, achieving pattern printing. This method is particularly suitable for small-batch and customized production, offering advantages such as rapid design changeover, vibrant colors, and environmental friendliness. However, as mentioned earlier, it suffers from higher costs and poor ink penetration. This invention relates to an inking system for gravure printing equipment and the gravure printing device itself, primarily applied to gravure printing machines.

[0037] Figure 1 This is a structural cross-sectional view of the inking system of a gravure printing apparatus according to an exemplary embodiment. For example... Figure 1 As shown, it may include the following devices.

[0038] The inking system of the gravure printing equipment includes a gravure roller 2, the circumference of which can be set between 500 mm and 2500 mm, depending on user requirements. The gravure roller 2 can be driven by a 1.5 kW to 15 kW motor. The outer surface of the gravure roller 2 is provided with a gravure structure, which can be engraved with different patterns or meshes for printing. This invention does not limit the specific shape or depth of the gravure structure. The type of gravure roller 2 can be chrome-plated copper roller, chrome-plated steel roller, chrome-plated ceramic anilox roller, or chrome-plated steel anilox roller; this invention does not limit this type.

[0039] The ink transfer roller 3 rotates and contacts the gravure roller 2. The ink transfer roller 3 has various structures, including a smooth-surfaced rubber roller 1, which is suitable for low-viscosity inks, such as 50-500 centipoise; a rubber roller 1 with circular grooves on its surface, which is suitable for medium-viscosity inks, such as 500-2000 centipoise; and a chrome-plated roller, which is suitable for high-viscosity inks, such as 2000-5000 centipoise. This invention allows for the selection of the appropriate type of ink transfer roller 3 according to the viscosity of the ink.

[0040] Figure 2 This is a structural diagram of an ink cartridge according to an exemplary embodiment. For example... Figure 3 As shown, the ink cartridge 5 is used to hold ink. The ink in the ink cartridge 5 is in contact with the outer surface of the ink transfer roller 3. That is, the ink transfer roller 3 rotates in the ink cartridge. During the rotation, the outer surface of the ink transfer roller 3 is coated with ink. Then, when the ink transfer roller 3 comes into contact with the gravure roller 2, it delivers ink to the outer surface of the gravure roller 2.

[0041] In one possible implementation, the ink supply system further includes a doctor blade 4 and a blade support frame. The blade support frame is detachably connected to the ink cartridge 5. Preferably, the blade support frame is located at one end of the ink cartridge 5 and its angle and height can be adjusted. The doctor blade 4 is in contact with the blade support frame and is used to remove excess ink from the surface of the gravure roller 2, leaving only ink on the gravure structure. This allows the doctor blade 4 to be replaced at any time to ensure the quality of ink removal. The doctor blade 4 can be made of stainless steel or rubber; this invention does not limit its use.

[0042] In one possible implementation, the bottom of the ink cartridge 5 is provided with rollers 14. The present invention does not limit the number of rollers 14. Preferably, the present invention provides 4 rollers 14. When the ink cartridge 5 needs to be cleaned or the ink needs to be replaced, the bottom of the rollers 14 is provided with a slide rail, and the rollers 14 can slide in the slide rail. This arrangement can ensure that the ink cartridge 5 can be easily moved by the operator.

[0043] Figure 3 This is a system block diagram illustrating an inking system of a gravure printing apparatus according to an exemplary embodiment. For example... Figure 3 As shown, the ink delivery system also includes a PLC controller 11, a material tank 12, a delivery motor, a delivery pump, a delivery pipe 8, and a liquid level sensor 13. The material tank 12 can be configured as a closed material tank for storing ink; the delivery motor can be configured as a servo motor, and this utility model does not limit the specific type of delivery motor. A closed ink delivery channel is formed between the material tank 12 and the delivery pipe 8; the delivery pump is connected to the delivery pipe 8, and the delivery motor is used to drive the delivery pump, thereby delivering the ink to the ink cartridge 5.

[0044] A liquid level sensor 13 is installed in the ink cartridge 5 to monitor the ink level. The type of liquid level sensor 13 may include a capacitive liquid level sensor, an ultrasonic liquid level sensor, an optical liquid level sensor, a float-type liquid level switch, etc. This utility model does not limit the specific type of liquid level sensor 13, and it can be determined according to the actual situation.

[0045] The liquid level sensor 13 is also connected to the PLC controller 11. When the liquid level sensor 13 detects that the ink level in the ink cartridge 5 is lower than the preset lower limit, the PLC controller 11 starts the feed motor, which in turn drives the feed pump to deliver the ink to the ink cartridge 5. When the liquid level sensor 13 detects that the ink level in the ink cartridge 5 has reached the preset upper limit, the PLC controller 11 controls the feed motor to shut down. This setting can accurately control the ink cartridge level and avoid damage to the gravure printing equipment caused by too much or too little ink.

[0046] In one possible implementation, the ink supply system further includes a feed guide roller 6, an output guide roller 7, a rubber roller 1, and a cylinder 9. The feed guide roller 6 is positioned on one side of the rubber roller 1 and is used to guide the textile fabric into the ink supply system of the gravure printing equipment, eliminating wrinkles on the textile and making the printed fabric smoother. The rubber roller 1 is connected to the cylinder 9, which provides pressure. The diameter of the cylinder 9 can be set to 50-125 mm, and the air pressure at both ends is adjusted by a valve on the cylinder 9. The cylinder 9 can provide an adjustable pressure of 30 kg to 3000 kg; this invention does not limit this, and the specific pressure value is determined according to the weight of the textile fabric and the viscosity of the ink.

[0047] As the textile passes through the rubber roller 1, the cylinder 9 provides pressure to ensure full contact between the rubber roller 1 and the gravure roller 2. This pressure contact between the rubber roller 1 and the gravure roller 2 precisely transfers the ink from the gravure structure of the gravure roller 2 onto the textile, thereby improving the printing quality. In this invention, the diameter of the rubber roller 1 can be set to 225-350 mm. The rubber roller 1 is coated with an acid- and alkali-resistant composite rubber, and its hardness is set to 65-95 Shore A. After the textile printing is completed, the pressure of the cylinder 9 is reduced to separate the gravure roller 2 and the rubber roller 1, allowing the textile to be exited via the fabric guide roller 7 located on the other side of the rubber roller 1.

[0048] In one possible implementation, the line connecting the center of the gravure roller 2, the center of the rubber roller 1, and the center of the ink transfer roller 3 is set as an inclined plane angle, not a vertical angle. This utility model does not limit the inclined plane angle.

[0049] In one possible implementation, the inking system of the gravure printing equipment of this invention is applied to the gravure printing equipment.

[0050] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0051] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0052] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. An inking system for a gravure printing apparatus, characterized in that, The ink delivery system comprises: a gravure roller, an outer surface of which is provided with a gravure structure; an ink transfer roller, which is in rolling contact with the gravure roller; an ink box, which contains ink, the ink being in contact with an outer surface of the ink transfer roller; a rubber roller, which is connected with an air cylinder, the rubber roller being in pressure contact with the gravure roller through the air cylinder, wherein the pressure contact between the rubber roller and the gravure roller is used to transfer the ink on the gravure structure to a textile.

2. The inking system of the intaglio printing apparatus according to claim 1, characterized in that, The ink delivery system further comprises a doctor blade and a blade support frame, the blade support frame being detachably connected with the ink box, the doctor blade being detachably connected with the blade support frame, the doctor blade being used to scrape off the ink on the surface of the gravure roller.

3. The inking system of the intaglio printing apparatus according to claim 1, wherein The ink delivery system further comprises a liquid level sensor, which is arranged in the ink box and used to monitor the liquid level of the ink.

4. The inking system of the intaglio printing apparatus according to claim 1, wherein The ink delivery system further comprises an entry guide roller and an exit guide roller, the entry guide roller being arranged on one side of the rubber roller, and the exit guide roller being arranged on the other side of the rubber roller.

5. The inking system of the intaglio printing apparatus according to claim 1, wherein The ink delivery system further comprises a material bucket, a material delivery motor, a material delivery pump and a material delivery pipe, the material bucket and the material delivery pipe constituting a closed ink delivery channel, the material delivery pump being connected with the material delivery pipe, the material delivery motor driving the material delivery pump, which is used to deliver the ink to the ink box.

6. An intaglio printing apparatus, characterized by The ink delivery system comprises any one of claims 1-5.

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