ED ink printing and curing device

Abstract

The utility model belongs to the technical field of printing, and discloses an ED ink printing and curing device which comprises a machine body, an inert gas generating device, an electron beam generator, an inert gas spraying device and a control system, a gas pipeline is arranged in the machine body, and the inert gas generating device is communicated with the gas pipeline. The electron beam generators are arranged in the machine body, the inert gas injection devices are arranged on the peripheries of the electron beam generators in a one-to-one correspondence mode and used for forming an inert gas barrier to isolate peripheral air, and the control system is electrically connected with the electron beam generators and the inert gas injection devices. The device is used for selectively starting an electron beam generator and an inert gas injection device at a printed matter printing part. According to the ED ink printing and curing device, through precise gas supply, the inert gas injection device and the electron beam generator are only started at the printing part, the idling rate of equipment can be reduced, the consumption of inert gas is greatly reduced, the operation cost is reduced, and the environmental protection property is good.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to an ED ink printing and curing device. Background Technology

[0002] As the global printing industry transforms towards green, digital, and flexible technologies, there is an urgent market demand for low-cost, high-efficiency, and environmentally friendly electron beam (EB) curing technology. Electron beam (EB) curing technology, with its advantages of high efficiency, solvent-free operation, and low VOC emissions, has attracted significant attention in printing, coating, and packaging industries.

[0003] In traditional electron beam curing processes, to prevent oxygen from depleting electron beam energy and to avoid ozone generation, a high-purity inert gas (such as nitrogen or argon) is typically filled throughout a fully enclosed curing chamber to maintain a low-oxygen environment (oxygen concentration ≤50ppm). However, relying on a sealed inert gas environment requires continuous gas replacement of the entire curing chamber to maintain the low-oxygen environment, resulting in huge inert gas consumption, high operating costs, low energy efficiency, and insufficient environmental friendliness.

[0004] Therefore, there is an urgent need to design a new ED ink printing and curing device to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an ED ink printing and curing device to solve the technical problems of continuous gas replacement of the entire curing chamber to maintain a low-oxygen environment, huge consumption of inert gas, high operating costs, low energy efficiency, and insufficient environmental protection.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] ED ink printing and curing apparatus, including:

[0008] The body, in which gas pipes are arranged;

[0009] An inert gas generating device is connected to the gas pipeline to supply inert gas to the gas pipeline;

[0010] An electron beam generator is provided in the machine body, wherein at least one of the electron beam generators is provided along the printing transport direction, and multiple electron beam generators are provided at intervals along a first direction perpendicular to the printing transport direction.

[0011] An inert gas injection device is provided, which is disposed one-to-one on the outer periphery of the electron beam generator to form an inert gas barrier to isolate the surrounding air.

[0012] A control system, electrically connected to the electron beam generator and the inert gas injection device, is used to selectively activate the electron beam generator and the inert gas injection device located at the printing area of ​​the printed matter.

[0013] The printed material is transported within the machine. An inert gas generator is activated, and inert gas is introduced into the inert gas injection device through a gas pipeline. The control system adjusts the activation of the corresponding inert gas injection device and electron beam generator based on the printing location of the printed material. The inert gas ejected by the inert gas injection device forms an air curtain, isolating the surrounding air while continuously replacing the inner air with inert gas. This ensures sufficient inert gas content and guarantees that the electron beam generator can be fully irradiated by the electron beam under low-oxygen conditions. Precise gas supply through the control system, activating the inert gas injection device and electron beam generator only at the printing location, reduces equipment idling rate, significantly decreases inert gas consumption, lowers operating costs, and improves environmental friendliness.

[0014] As a preferred embodiment of the ED ink printing and curing apparatus, at least two electron beam generators are arranged along the printing transport direction to form two rows of electron beam generator groups, and the electron beam generators of the two rows of electron beam generator groups are staggered and cross-arranged in the transport direction.

[0015] By setting up two rows of staggered electron beam generators, multiple electron beam generators in the second row can supplement the irradiation of the printing area located between two adjacent electron beam generators in the first row, ensuring that the printed material can be fully irradiated along the first direction, avoiding dead corners, ensuring the quality of printing curing, and reducing the defect rate.

[0016] As a preferred embodiment of an ED ink printing curing apparatus, the inert gas injection device includes:

[0017] A gas delivery pipeline is sleeved on the outer periphery of the electron beam generator and is connected to the gas pipeline;

[0018] The nozzles are provided in a plurality of them, and each of the nozzles is connected to the gas supply pipeline.

[0019] As a preferred embodiment of the ED ink printing curing apparatus, the inert gas injection device further includes:

[0020] A control valve is provided at the connection between the gas supply pipeline and the gas pipeline. The control valve is electrically connected to the control system and is used to regulate the on / off state and flow rate of the inert gas.

[0021] The control system adjusts the control valves of the corresponding gas pipelines to precisely control the on / off state and flow rate of the inert gas in the corresponding gas pipelines according to the printing conditions, offering good flexibility.

[0022] As a preferred embodiment of an ED ink printing and curing apparatus, the shape of the gas delivery pipe is matched with that of the electron beam generator.

[0023] Ensure that the air curtain formed can cover the irradiated area of ​​the printed material irradiated by the electron beam generator.

[0024] As a preferred embodiment of the ED ink printing and curing apparatus, the inner diameter of the gas supply pipe is larger than the diameter of the electron beam generator.

[0025] It facilitates the replacement of electron beam generators and is also compatible with different models of electron beam generators, offering good versatility. The gap between the gas delivery pipeline and the electron beam generator provides space for the rotation and adjustment of the subsequently installed rotatable nozzle.

[0026] As a preferred embodiment of the ED ink printing and curing device, the printhead is a rotatable printhead, which is electrically connected to the control system.

[0027] The rotatable nozzle can be flexibly combined with the electron beam generator to precisely adjust the spray range.

[0028] As a preferred embodiment of the ED ink printing curing device, at least two connecting short pipes connected to the gas pipeline are provided on the gas pipeline.

[0029] Two connecting short tubes can transport inert gas into the gas pipeline more quickly and are easy to connect to the gas pipeline.

[0030] As a preferred embodiment of the ED ink printing and curing device, a paper outlet is provided on one side of the machine body and a paper inlet is provided on the other side. The paper outlet and the paper inlet are on the same horizontal plane, and the printed matter enters the paper outlet through the paper inlet and is then exported.

[0031] Printed materials are horizontally fed into the machine body through the paper inlet via a traction mechanism and discharged through the paper outlet. The machine body is a hollow, closed structure that creates conditions for the formation of a low-oxygen environment, thereby improving energy efficiency.

[0032] In a preferred embodiment of an ED ink printing and curing apparatus, both the electron beam generator and the inert gas injection device are located at the top of the machine body, with the output end of the electron beam generator located at its bottom.

[0033] All devices are integrated on the top of the machine and located above the printed material, with the electron beam generator irradiating the surface of the printed material vertically.

[0034] The beneficial effects of this utility model are:

[0035] The printed material is transported within the machine. An inert gas generator is activated, and inert gas is introduced into the inert gas injection device through a gas pipeline. The control system adjusts the activation of the corresponding inert gas injection device and electron beam generator based on the printing area of ​​the material. The inert gas ejected by the injection device forms an air curtain, isolating the surrounding air while continuously replacing the inner air with inert gas, ensuring sufficient inert gas content and guaranteeing that the electron beam generator can be fully irradiated by the electron beam under low-oxygen conditions. By precisely supplying gas and activating the inert gas injection device and electron beam generator only at the printing area, the equipment's idling rate can be reduced, significantly decreasing inert gas consumption, lowering operating costs, and improving environmental friendliness. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the ED ink printing and curing device provided in this embodiment of the utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the hidden upper cover plate of the ED ink printing and curing device provided in this embodiment of the utility model;

[0038] Figure 3 This is a schematic diagram of the electron beam generator and inert gas injection device provided in this embodiment of the utility model.

[0039] In the picture:

[0040] 1. Machine body; 11. Paper output port; 12. Paper input port;

[0041] 2. Inert gas generating device;

[0042] 3. Electron beam generator;

[0043] 4. Inert gas injection device; 41. Gas delivery pipeline; 411. Connecting short pipe; 42. Nozzle;

[0044] 5. Control system;

[0045] 6. Gas pipelines. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] Combination Figures 1-3 As shown, this embodiment provides an ED ink printing and curing apparatus, including a body 1, an inert gas generating device 2, an electron beam generator 3, an inert gas injection device 4, and a control system 5.

[0051] The machine body 1 has a hollow interior and is supported by legs at its bottom. A paper output port 11 is located on one side of the machine body 1, and a paper input port 12 is located on the other side. The paper output port 11 and the paper input port 12 are positioned opposite each other and on the same horizontal plane. Printed materials enter through the paper input port 12 and exit through the paper output port 11. The printed materials are horizontally drawn into the machine body 1 through the paper input port 12 by a traction mechanism and exited through the paper output port 11. The machine body 1 has a hollow, closed structure, which creates conditions for the formation of a low-oxygen environment, thereby improving energy efficiency.

[0052] Furthermore, such as Figure 2As shown, a gas pipe 6 is installed inside the body 1. The gas pipe 6 is located at the top of the body 1. The inert gas generating device 2 is connected to the gas pipe 6 to supply inert gas to the gas pipe 6.

[0053] Preferably, the inert gas generating device 2 in this embodiment is a nitrogen generating device, that is, nitrogen is selected as the inert gas. Nitrogen is non-flammable and non-toxic, and is safer than argon, helium and other gases. Helium is the main component of air, and its production cost is lower than other inert gases, resulting in good economic benefits.

[0054] In this embodiment, several electron beam generators 3 are arranged inside the body 1. At least one electron beam generator 3 is arranged along the printing transport direction (Y direction in the figure), and multiple electron beam generators 3 are arranged at intervals along a first direction perpendicular to the printing transport direction (X direction in the figure). Preferably, at least two electron beam generators 3 are arranged along the printing transport direction to form two rows of electron beam generator groups. Each row of electron beam generator groups has five electron beam generators 3, and the electron beam generators 3 of the two rows of electron beam generator groups are staggered and cross-arranged in the transport direction.

[0055] Furthermore, the two rows of electron beam generator groups are defined as the first electron beam generator group and the second electron beam generator group, respectively. The electron beam generators 3 of the first electron beam generator group are arranged at equal intervals along the first direction. The center line of the electron beam generators 3 of the second electron beam generator group corresponds to the gap between two adjacent electron beam generators 3 of the first electron beam generator group along the transmission direction. By setting up two rows of staggered electron beam generators 3, multiple electron beam generators 3 of the first electron beam generator group can supplement the irradiation of the printing area located at the gap between two adjacent electron beam generators 3 of the second electron beam generator group, ensuring that the printed matter can be fully irradiated along the first direction, avoiding dead corners, ensuring the quality of printing and curing, and reducing the defect rate.

[0056] In other embodiments, the number of electron beam generators 3 arranged along the printing transport direction, i.e. the number of rows of electron beam generator groups, can be one row, three rows, four rows, five rows, or more rows. The number of electron beam generators 3 arranged along the first direction can be one, two, three, four, six, or even more. This embodiment does not specifically limit this.

[0057] In this embodiment, to accommodate the placement of the electron beam generator 3, three gas pipelines 6 are laid. These three gas pipelines 6 extend along the first direction and are spaced apart along the transmission direction. Two rows of electron beam generator groups are located between two adjacent gas pipelines 6. One end of each of the three gas pipelines 6 is closed, and the other ends are connected via a pipe. Both ends of the pipes are closed. The gas supply pipe of the inert gas generating device 2 is connected to the pipe connected to the three gas pipelines 6, thus supplying gas to the gas pipelines 6.

[0058] Alternatively, the connection between the pipelines can be via valve body, fixed connection, threaded connection, etc.

[0059] like Figure 2 and Figure 3 As shown, inert gas injection devices 4 are correspondingly arranged on the outer periphery of electron beam generator 3 to form an inert gas barrier to isolate the surrounding air. Specifically, the inert gas injection device 4 includes a gas supply pipe 41 and nozzles 42. The gas supply pipe 41 is sleeved on the outer periphery of electron beam generator 3 and is connected to gas pipe 6. Several nozzles 42 are provided, and each nozzle 42 is connected to the gas supply pipe 41. Preferably, the nozzles 42 in this embodiment are rotatable nozzles, which can flexibly cooperate with electron beam generator 3 and accurately adjust the injection range.

[0060] The shape of the gas supply pipe 41 matches that of the electron beam generator 3. In this embodiment, the electron beam generator 3 is cylindrical, so the gas supply pipe 41 is set as an annular shape to ensure that the formed air curtain can cover the irradiation area of ​​the printed material irradiated by the electron beam generator 3. The inner diameter of the gas supply pipe 41 is larger than the diameter of the electron beam generator 3, which facilitates the replacement of the electron beam generator 3 and can also adapt to different models of electron beam generator 3, providing good versatility. The gap between the gas supply pipe 41 and the electron beam generator 3 provides space for the rotation and adjustment of the rotatable nozzle.

[0061] Furthermore, a connecting short pipe 411 is provided between the gas transmission pipeline 41 and the gas pipeline 6, and at least two connecting short pipes 411 connected to the gas pipeline 6 are provided on one gas transmission pipeline 41. The two connecting short pipes 411 can transmit inert gas into the gas transmission pipeline 41 more quickly and are convenient to connect to the gas pipeline 6.

[0062] In addition, the electron beam generator 3 and the inert gas injection device 4 are both located on the top of the machine body 1, with the output end of the electron beam generator 3 located at its bottom. All devices are integrated on the top of the machine body 1 and positioned above the printed matter, with the electron beam generator 3 vertically irradiating the surface of the printed matter.

[0063] like Figure 2As shown, in this embodiment, the control system 5 is electrically connected to the electron beam generator 3 and the inert gas injection device 4, and is used to selectively activate the electron beam generator 3 and the inert gas injection device 4 located at the printing area of ​​the printed matter. Specifically, the control system 5 can directly control the opening and closing of the electron beam generator 3. The inert gas injection device 4 also includes a control valve, which is located at the connection between the gas supply pipe 41 and the gas pipe 6. The control valve is electrically connected to the control system 5 and is used to adjust the on / off state and flow rate of the inert gas. The rotatable nozzle is electrically connected to the control system 5. By adjusting the control valve of the corresponding gas supply pipe 41, the control system 5 can accurately control the on / off state and flow rate of the inert gas in the corresponding gas supply pipe 41 according to the printing situation. By adjusting the rotation of the nozzle 42, the injection range can be precisely adjusted, providing good flexibility.

[0064] In summary, the printed material is transported within the machine body 1. The helium generation device is activated, and the generated helium is transmitted through the gas supply pipe to the three gas pipes 6. It then enters the gas delivery pipe 41 through the connecting short pipe 411. The control system 5 adjusts the control valve of the helium injection device and the electron beam generator 3 corresponding to the printing area of ​​the printed material. Simultaneously, the nozzle 42 is rotated to a suitable angle, and it ejects helium to form an air curtain, isolating the surrounding air. The inner air is continuously replaced by helium, ensuring helium content and guaranteeing that the electron beam generator 3 can be fully irradiated by the electron beam under low-oxygen conditions. Through precise gas supply by the control system 5, the helium injection device and electron beam generator 3 are activated only at the printing area, reducing the equipment's idling rate, significantly reducing inert gas consumption, lowering operating costs, and improving environmental friendliness.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An ED ink printing and curing apparatus, characterized in that, include: The body (1) is provided with gas pipes (6); An inert gas generating device (2) is connected to the gas pipeline (6) to deliver inert gas to the gas pipeline (6); An electron beam generator (3) is provided in the body (1). At least one of the electron beam generators (3) is provided along the printing transport direction, and multiple electron beam generators (3) are provided at intervals along a first direction perpendicular to the printing transport direction. Inert gas injection device (4), the inert gas injection device (4) is arranged one-to-one on the outer periphery of the electron beam generator (3) to form an inert gas barrier to isolate the surrounding air; A control system (5) is electrically connected to the electron beam generator (3) and the inert gas injection device (4) for selectively activating the electron beam generator (3) and the inert gas injection device (4) located at the printing area of ​​the printed matter.

2. The ED ink printing and curing apparatus according to claim 1, characterized in that, At least two electron beam generators (3) are arranged along the printing transmission direction to form two rows of electron beam generator groups, and the electron beam generators (3) of the two rows of electron beam generator groups are staggered and cross-arranged in the transmission direction.

3. The ED ink printing and curing apparatus according to claim 1, characterized in that, The inert gas injection device (4) includes: Gas delivery pipe (41), the gas delivery pipe (41) is sleeved on the outer periphery of the electron beam generator (3), and the gas delivery pipe (41) is connected to the gas pipe (6); The nozzle (42) is provided in a plurality of units, and all of the nozzles (42) are connected to the gas supply pipe (41).

4. The ED ink printing and curing apparatus according to claim 3, characterized in that, The inert gas injection device (4) further includes: A control valve is provided at the connection between the gas pipeline (41) and the gas pipeline (6). The control valve is electrically connected to the control system (5) and is used to regulate the on / off state and flow rate of the inert gas.

5. The ED ink printing and curing apparatus according to claim 3, characterized in that, The shape of the gas pipeline (41) matches that of the electron beam generator (3).

6. The ED ink printing and curing apparatus according to claim 5, characterized in that, The inner diameter of the gas pipeline (41) is larger than the diameter of the electron beam generator (3).

7. The ED ink printing and curing apparatus according to claim 3, characterized in that, The nozzle (42) is a rotatable nozzle, which is electrically connected to the control system (5).

8. The ED ink printing and curing apparatus according to claim 3, characterized in that, At least two connecting short pipes (411) connected to the gas pipeline (6) are provided on the gas pipeline (41).

9. The ED ink printing and curing apparatus according to any one of claims 1-8, characterized in that, The machine body (1) has a paper outlet (11) on one side and a paper inlet (12) on the other side. The paper outlet (11) and the paper inlet (12) are on the same horizontal plane. The printed matter enters the paper outlet (11) through the paper inlet (12) and is then exported.

10. The ED ink printing and curing apparatus according to claim 9, characterized in that, The electron beam generator (3) and the inert gas injection device (4) are both located on the top of the body (1), and the output end of the electron beam generator (3) is located at its bottom.

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