UV curing device and UV inkjet printing apparatus

Abstract

The utility model belongs to the field of UV curing technology, solve the existing technology's easy because of the existence of ink flying or ink curing effect is not good and lead to the printing medium's printing quality is not good's insufficient, provide UV curing device and UV inkjet printing equipment, UV curing device includes: casing, install on the casing UV lamp, heat abstractor, filter piece and heat dissipation fan, heat abstractor and UV lamp heat conduction contact, heat dissipation fan is used to form heat dissipation air path to pass heat abstractor and filter piece in proper order, casing is equipped with with heat abstractor side surface intercommunication's outer air inlet, in the flow direction of heat dissipation air path in the casing, heat dissipation fan is arranged between heat abstractor and filter piece, and the ink flying produced by spraying ink is guided to filter piece through air inlet along heat dissipation air path, thereby heat dissipation air path makes the ink flying be collected in filter piece while heat abstractor radiates, the utility model has can absorb ink flying and improve the heat dissipation effect of UV lamp, thereby improving the printing quality of printing medium's advantage.

Description

Technical Field

[0001] This utility model relates to the field of UV curing technology, and in particular to a UV curing device and a UV inkjet printing equipment. Background Technology

[0002] Inkjet printing technology refers to the technique of spraying ink onto a printing medium through nozzles on a printhead to obtain images or text. The printing medium is generally two-dimensional, and the printing platform carrying the medium is a moving platform controlled by a transport mechanism. However, during inkjet printing, ink splatter is unavoidable when the nozzles eject ink. This splatter, falling onto the printing medium, reduces print quality. Furthermore, the ink that forms the image or text in inkjet printing needs to be cured by UV lamps. UV lamps reach high temperatures after prolonged operation, requiring additional heat dissipation. Poor heat dissipation can lead to inadequate ink curing, further reducing print quality.

[0003] Therefore, there is an urgent need to provide a UV curing device and a UV inkjet printing device that can improve the printing quality of printing media by reducing ink splatter and improving heat dissipation. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies, such as poor print quality due to ink splatter or inadequate ink curing. To achieve this objective, a UV curing device is provided, comprising: a housing for fixing to the side of a printing carriage, the printing carriage for spraying ink onto the printing medium on a printing platform; a UV lamp, a heat sink, a filter, and a cooling fan mounted on the housing; the UV lamp for curing the ink sprayed by the printing carriage; the heat sink in thermal contact with the UV lamp; the cooling fan for drawing outside air into the housing to form a cooling airflow path, which passes sequentially through the heat sink and the filter; the filter for filtering the cooling airflow path; the housing has an external air inlet connected to the side of the heat sink; the cooling fan is positioned between the heat sink and the filter in the direction of airflow path within the housing; ink splatter generated by ink spraying is guided through the air inlet to the filter via the cooling airflow path, thus dissipating heat from the heat sink while simultaneously collecting the ink splatter in the filter.

[0005] Furthermore, the housing includes an outer frame and a first inner frame. The first inner frame is fixed in the outer frame, and the filter element is arranged in the first inner frame. The outer frame includes a detachable top shell. The top surface of the filter element abuts against the top shell. The top shell is provided with an exhaust port that communicates with the filter element. An air duct for heat dissipation is formed in the internal space of the bottom surface of the first inner frame facing the filter element and opposite to the top surface. The top shell can be disassembled to replace the filter element.

[0006] Furthermore, the housing also includes an outer side plate and a second inner frame shell. The second inner frame shell is fixed in the outer frame shell, and the heat sink and cooling fan are fixed in the second inner frame shell. An inner air inlet and an inner baffle are provided on the lower side of an inner shell plate of the second inner frame shell. The inner baffle is inclined relative to the vertical direction and the end of the plate connected to the inner shell plate is connected to the lower side of the inner air inlet. The outer side plate is located on the outer frame shell at a position opposite to the air inlet, and an outer air inlet is provided on the outer side plate.

[0007] Furthermore, an outer baffle is provided on the outer side panel. The outer baffle is inclined relative to the vertical direction and the inclination direction is the same as that of the inner baffle. An external air inlet is formed between the outer baffle and the outer side panel.

[0008] Furthermore, both the outer and inner baffles extend horizontally and are perpendicular to the direction of movement of the printing carriage.

[0009] Furthermore, the UV lamp is fixed to the lower part of the second inner frame and makes thermal contact with the lower side of the heat sink.

[0010] Furthermore, the second inner frame is configured to tilt away from the printing carriage relative to the vertical direction.

[0011] Furthermore, an anti-collision detection mechanism is fixed on the outer frame shell between the outer frame shell and the second inner frame shell, and an electrostatic bar is fixed on the outer frame shell between the second inner frame shell and the printing carriage, with the electrostatic bar facing the printing platform.

[0012] Furthermore, the heat dissipation component is a heat dissipation fin, the filter component is a filter cotton, the UV lamp has UV lamp beads that contact the heat dissipation fins, the gaps in the heat dissipation fins allow the heat dissipation airflow to pass through, and the inner baffle is spaced relative to the gaps.

[0013] To achieve another objective of this utility model, a UV inkjet printing device is provided, which includes a printing carriage, a frame, a crossbeam, and a printing platform. The crossbeam and the printing platform are both supported by the frame. The printing carriage is movably connected to the crossbeam and is provided with nozzles. The UV inkjet printer is characterized in that it also includes any of the above-mentioned UV curing devices, which are fixed to the side of the printing carriage.

[0014] The beneficial effects of this utility model are as follows:

[0015] The UV curing device and UV inkjet printing equipment provided by this utility model utilize the heat dissipation air path for cooling the UV lamp to attract and guide the ink to enter the filter and be absorbed. This can reduce the size of the equipment, improve the energy efficiency of the device, and simultaneously reduce ink spillage and improve heat dissipation, thus significantly improving the printing quality of the printing media. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0017] Figure 1 A schematic diagram of the assembly of the UV curing device and the printing carriage provided in this embodiment of the utility model;

[0018] Figure 2 A cross-sectional schematic diagram showing the assembly of the UV curing device and the printing carriage provided in an embodiment of this utility model;

[0019] Figure 3 A bottom-view axial-side view of the UV curing device and printing carriage provided in this embodiment of the utility model, with the outer frame shell hidden.

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

[0021] 1. Housing; 11. Outer frame; 111. Top shell; 1111. Exhaust vent; 12. First inner frame; 121. Air duct; 13. Outer side panel; 131. External air inlet; 132. External baffle; 14. Second inner frame; 141. Inner shell panel; 142. Internal air inlet; 143. Internal baffle; 2. UV lamp; 3. Heat sink; 4. Filter; 5. Collision detection mechanism; 6. Static bar; 10. Printing carriage. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element limited by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0023] refer to Figures 1 to 3 As an objective of this utility model, a UV curing device is provided, comprising a housing 1, a UV lamp 2, a heat sink 3, a filter 4, an anti-collision detection mechanism 5, and an electrostatic rod 6. The housing 1 is fixed to the side of a printing carriage 10, which sprays ink onto the printing medium on a printing platform. The UV lamp 2 cures the ink sprayed by the printing carriage 10. The heat sink 3 is in thermal contact with the UV lamp 2. A cooling fan (not shown) draws outside air into the housing 1 to form a cooling airflow path, which passes sequentially through the heat sink 3 and the filter 4. The filter 4 filters the cooling airflow path. The housing 1 has an external air inlet 131 connected to the side of the heat sink 3. In the flow direction of the cooling airflow path within the housing 1, the cooling fan is positioned between the heat sink 3 and the filter 4. The ink splatter generated by the ink spraying flows through the air inlet to the filter 4, thus dissipating heat from the heat sink 3 while simultaneously collecting the ink splatter in the filter 4.

[0024] Therefore, the UV curing device provided by this utility model uses the heat dissipation air path of the UV lamp 2 to attract and guide the ink splatter into the filter element 4 for absorption, which is equivalent to combining the filter air path for filtering ink splatter with the heat dissipation air path of the UV lamp 2. This can reduce the size of the device, improve the energy efficiency of the device, and simultaneously reduce ink splatter and improve the heat dissipation effect, thus significantly improving the printing quality of the printing medium.

[0025] Please refer to the reference. Figure 1 and 2 Preferably, the housing 1 includes an outer frame 11 and a first inner frame 12. The first inner frame 12 is fixed in the outer frame 11, and the filter element 4 is arranged in the first inner frame 12. The outer frame 11 includes a detachable top shell 111. The top surface of the filter element 4 abuts against the top shell 111. The top shell 111 is provided with an exhaust port 1111 that communicates with the filter element 4. An air duct 121 for heat dissipation is formed in the internal space of the bottom surface of the first inner frame 12 facing the filter element 4 and opposite to the top surface. The top shell 111 can be disassembled to replace the filter element 4. Because existing UV curing devices install the filter 4 directly on the top of the cooling fan, it is very inconvenient to replace the filter 4. It is necessary to first remove the outermost shell of the existing UV curing device and then remove the UV lamp 2 in order to disassemble and replace the internal filter 4. However, the UV curing device of this embodiment extends the upper air duct 121 and raises the installation position of the filter 4 accordingly, so that the top of the filter 4 contacts the top shell 111, and the top shell 111 is set to be detachably fixed. In this way, when replacing the filter 4, only the top shell 111 needs to be removed, which improves convenience.

[0026] Please refer to the reference. Figure 1 and Figure 2 Preferably, the housing 1 further includes an outer side plate 13 and a second inner frame shell 14. The second inner frame shell 14 is fixed in the outer frame shell 11, and the heat sink 3 and the cooling fan are fixed in the second inner frame shell 14. An inner air inlet 142 and an inner baffle 143 are provided on the lower side of an inner shell plate 141 of the second inner frame shell 14. The inner baffle 143 is inclined relative to the vertical direction and its end connected to the inner shell plate 141 is connected to the lower side of the inner air inlet 142. The outer side plate 13 is located on the outer frame shell 11 at a position opposite to the air inlet, and an outer air inlet 131 is provided on the outer side plate 13. In this way, since the inner air inlet 142 is located on the lower side of the inner shell plate 141, and the lower end of the inner baffle 143 is connected to the lower side of the inner air inlet 142, it can play a role in preventing ink overflow.

[0027] Please refer to the reference. Figure 1 and 2Preferably, the outer side plate 13 is provided with an outer baffle 132, which is inclined relative to the vertical direction and in the same direction as the inner baffle 143. An outer air inlet 131 is formed between the outer baffle 132 and the outer side plate 13. Therefore, by providing the outer baffle 132, it can both guide the heat dissipation airflow and prevent foreign objects from easily entering the inner frame shells.

[0028] Please refer to the reference. Figure 2 Preferably, both the outer baffle 132 and the inner baffle 143 extend horizontally and are perpendicular to the direction of movement of the printing carriage 10. In this way, when the printing carriage 10 moves, the airflow disturbance generated by its movement and the guiding effect of the baffles can make it easier for ink to be captured by the suction force generated by the cooling fan through the cooling air path and guided to the filter element 4.

[0029] Please refer to the reference. Figure 2 Preferably, the UV lamp 2 is fixed to the lower part of the second inner frame shell 14 and makes thermal contact with the lower side of the heat sink 3. Therefore, the assembly structure of the UV lamp 2 and the heat sink 3 is compact, which is beneficial for heat dissipation of the UV lamp 2.

[0030] Please refer to the reference. Figure 2 Preferably, the second inner frame 14 is tilted away from the printing carriage 10 relative to the vertical direction. This design, by setting the second inner frame 14 to be tilted outward relative to the printing carriage 10 as a whole, can prevent UV light from being reflected to the printhead, thereby preventing the printhead from being blocked by cured ink.

[0031] Please refer to the reference. Figure 2 and Figure 3 Preferably, an anti-collision detection mechanism 5 is fixed on the outer frame 11, located between the outer frame 11 and the second inner frame 14. An electrostatic rod 6 is also fixed on the outer frame 11, located between the second inner frame 14 and the printing carriage 10. The electrostatic rod 6 faces the printing platform, especially the printing medium. The electrostatic rod 6 typically contains one or more rows of sharp discharge needles. By applying a high voltage, typically AC or DC, to these discharge needles, a strong electric field is generated at their tips. This strong electric field ionizes surrounding air molecules, generating a large number of positive and negative ions. When a statically charged material passes near the electrostatic rod 6, the static charge on the material surface attracts and combines with ions of opposite charge in the air, thereby neutralizing the charge and eliminating static electricity. This effectively eliminates or neutralizes the static charge generated on the surface of the printing medium (e.g., paper, film, plastic sheet, etc.) during the printing process, and also helps reduce the accumulation of static electricity on the UV curing device and adjacent components of the printing equipment.

[0032] Please refer to the reference. Figure 2Preferably, the heat sink 3 is a heat sink fin, the filter 4 is a filter cotton, the UV lamp has UV lamp beads in contact with the heat sink fin, the gaps in the heat sink fin allow the heat dissipation airflow, and the inner baffle 143 is opposite to the gap. In this way, the heat sink fin not only has good heat dissipation effect and low cost, but is also easy to connect with the inner air inlet 142. The filter cotton has good ink filtration effect and the air resistance has limited impact on the heat dissipation of the UV lamp 2.

[0033] As another objective of this utility model, it also provides a UV inkjet printing device, which includes a printing carriage 10, a crossbeam, a printing platform, and a frame (not shown). Both the crossbeam and the printing platform are supported by the frame. The printing carriage 10 is movably connected to the crossbeam and has nozzles mounted on it. The UV inkjet printing device also includes any of the above-mentioned UV curing devices, which are fixed to the side of the printing carriage 10. The UV inkjet printing device can obtain the beneficial effects brought by any of the UV curing devices, which will not be elaborated further here. Therefore, the UV inkjet printing device provided by this utility model can reduce ink splatter onto the printing medium and improve the heat dissipation effect of the UV lamp 2, thereby significantly improving the printing quality of inkjet printing on the printing medium.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A UV curing apparatus, characterized in that, include: A housing for fixing to the side of a printing carriage, which is used to spray ink onto printing media on a printing platform; A UV lamp, a heat sink, a filter, and a cooling fan are installed on the housing. The UV lamp is used to cure the ink ejected by the printing carriage. The heat sink is in thermal contact with the UV lamp. The cooling fan is used to draw outside air into the housing to form a cooling air path, so that it passes through the heat sink and the filter in sequence. The filter is used to filter the cooling air path that passes through it. The housing is provided with an external air inlet that communicates with the side of the heat sink. In the flow direction of the heat dissipation air path in the housing, the heat dissipation fan is arranged between the heat sink and the filter. The ink sprayed by the ink is guided to the filter through the air inlet by the heat dissipation air path, so that the heat dissipation air path dissipates heat from the heat sink while also collecting the ink spray in the filter.

2. The UV curing apparatus according to claim 1, characterized in that, The housing includes an outer frame and a first inner frame. The first inner frame is fixed in the outer frame, and the filter element is arranged in the first inner frame. The outer frame includes a detachable top shell. The top surface of the filter element abuts against the top shell. The top shell is provided with an exhaust port communicating with the filter element. An air duct is formed in the internal space of the bottom surface of the first inner frame facing the filter element, opposite to the top surface, for the heat dissipation airflow to pass through. The top shell can be disassembled to replace the filter element.

3. The UV curing apparatus according to claim 2, characterized in that, The housing also includes an outer side plate and a second inner frame shell. The second inner frame shell is fixed in the outer frame shell. The heat sink and the cooling fan are fixed in the second inner frame shell. An inner air inlet and an inner baffle are provided on the lower side of an inner shell plate of the second inner frame shell. The inner baffle is inclined relative to the vertical direction and the end of the plate connected to the inner shell plate is connected to the lower side of the inner air inlet. The outer side plate is located on the outer frame shell at a position opposite to the air inlet, and the outer side plate is provided with the outer air inlet.

4. The UV curing apparatus according to claim 3, characterized in that, An outer baffle is provided on the outer side plate. The outer baffle is inclined relative to the vertical direction and the inclination direction is the same as that of the inner baffle. The outer air inlet is formed between the outer baffle and the outer side plate.

5. The UV curing apparatus according to claim 4, characterized in that, Both the outer baffle and the inner baffle extend horizontally and are perpendicular to the direction of movement of the printing trolley.

6. The UV curing apparatus according to claim 3, characterized in that, The UV lamp is fixed to the lower part of the second inner frame and makes thermal contact with the lower side of the heat sink.

7. The UV curing apparatus according to claim 3, characterized in that, The second inner frame is configured to tilt away from the printing carriage relative to the vertical direction.

8. The UV curing apparatus according to claim 3, characterized in that, An anti-collision detection mechanism is fixed on the outer frame shell between the outer frame shell and the second inner frame shell, and an electrostatic bar is fixed on the outer frame shell between the second inner frame shell and the printing carriage, with the electrostatic bar facing the printing platform.

9. The UV curing apparatus according to claim 3, characterized in that, The heat dissipation component is a heat dissipation fin, the filter component is a filter cotton, the UV lamp has UV lamp beads that are in contact with the heat dissipation fin, the gaps in the heat dissipation fins allow the heat dissipation airflow to pass through, and the inner baffle is spaced opposite to the gaps.

10. A UV inkjet printing apparatus, comprising a printing carriage, a frame, a crossbeam, and a printing platform, wherein the crossbeam and the printing platform are both supported by the frame, and the printing carriage is movably connected to the crossbeam and has nozzles mounted thereon, characterized in that, The UV inkjet printing equipment further includes a UV curing device as described in any one of claims 1 to 9, wherein the UV curing device is fixed to the side of the printing carriage.

Images