CN217145402U

CN217145402U - Low-temperature roller structure of digital printing machine

Info

Publication number: CN217145402U
Application number: CN202220445523.7U
Authority: CN
Inventors: 董霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-08-09
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a digital printing machine's low temperature cylinder structure, including the frame, be provided with rotatable low temperature cylinder in the frame, the periphery of low temperature cylinder has the clearance of establishing around what supply medium input and output, and a plurality of heat sources that the circularity was arranged in the periphery, and the medium is carried to low temperature cylinder department after the printing, and inboard low temperature cylinder carries out the cooling of medium internal surface in transportation process, and the outside heat source carries out the stoving of medium surface. The utility model discloses a medium after will printing is carried and is convoluteed to the low temperature cylinder, the in-process of process is carried by low temperature cylinder department to the medium, the low temperature cylinder carries out cooling to the medium internal surface in the inboard, the peripheral heat source in the low temperature cylinder outside is dried the printing layer of medium surface, when guaranteeing the figure drying and the solidification of printing, the medium internal surface is keeping comparing the lower temperature of surface, the condition of avoiding the thin medium that the high temperature brought to produce the deformation takes place, thereby guarantee the printing yield.

Description

Low-temperature roller structure of digital printing machine

Technical Field

The utility model relates to a printing machine field, more specifically the low temperature cylinder structure of digital printing machine that says so.

Background

The digital printer is used for printing a pattern on the surface of a medium, the pattern is still in a liquid state when being just sprayed on the surface of the medium and needs to be dried in the process of continuous conveying, so that the pattern is shaped to complete the function of the printer. When the selected medium is a thin film or paper, the drying process is very likely to cause deformation of the film or paper, thereby affecting the printing yield. Therefore, how to effectively cool the medium in the drying process is the problem to be solved by the utility model.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a digital printing machine's low temperature cylinder structure through on convoluteing the medium to the low temperature cylinder, inboard cooling in transportation process, the mode of outside stoving makes the medium be difficult for producing high temperature deformation at the stoving in-process to guarantee the printing yield.

The utility model provides a following technical scheme: the low-temperature roller structure of the digital printing machine comprises a frame, wherein a rotatable low-temperature roller is arranged on the frame, a winding gap for inputting and outputting media is arranged at the periphery of the low-temperature roller, a plurality of heat sources are annularly arranged at the periphery of the low-temperature roller, the media are conveyed to the low-temperature roller after being printed, the inner side of the low-temperature roller is cooled for the inner surface of the media in the conveying process, and the outer side of the low-temperature roller is dried for the outer surface of the media.

As an improvement, the low-temperature roller is filled with gas or liquid for cooling from a central rotating shaft through a pipeline.

As an improvement, a semiconductor refrigerating sheet or a cold and hot sheet for refrigerating is arranged in the low-temperature roller, and a power supply is externally connected to a rotating shaft at the center of the low-temperature roller to supply power to the semiconductor refrigerating sheet or the cold and hot sheet.

As an improvement, a gap is arranged above the low-temperature roller, and the medium is input into and output from the low-temperature roller through the gap above.

As an improvement, an input roller for inputting and winding the medium and an output roller for outputting and winding the medium are respectively arranged at different height positions above the gap.

As an improvement, a plurality of heat sources are uniformly arranged at the peripheral positions of the low-temperature roller except for the gaps, and a heat dissipation space is arranged between the adjacent heat sources.

As an improvement, the heat source comprises an arrangement cover and a heating pipe, wherein the side edge of the arrangement cover is installed on the rack, an open cover opening is formed in the position facing the low-temperature roller, and the heating pipe is installed in the arrangement cover and transfers heat outwards through the cover opening.

As an improvement, the other side of the arrangement cover opposite to the cover opening is also provided with a fan, and the fan blows air to the cover opening to promote heat to be transferred outwards during work.

As an improvement, the arrangement cover is a strip shape adapting to the width of the low-temperature roller, and the fans are arranged into a plurality of groups along the strip shape of the arrangement cover.

As an improvement, the arrangement cover is arranged on the rack through an installation shaft, and an external connection circuit is arranged through a through hole in the installation shaft to supply power to the heating tube and the fan.

The utility model has the advantages that: the printed medium is conveyed to the low-temperature roller to be wound, the low-temperature roller cools and cools the inner surface of the medium at the inner side in the process that the medium is conveyed to pass through the low-temperature roller, and the heat source at the periphery of the outer side of the low-temperature roller dries the printing layer on the outer surface of the medium.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a heat source according to the present invention.

Fig. 3 is a schematic perspective view of a heat source according to the present invention.

Fig. 4 is a schematic view of the front three-dimensional structure of the present invention when applied to a digital printing machine.

Fig. 5 is a schematic diagram of a reverse three-dimensional structure when the present invention is applied to a digital printing machine.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, 4 and 5, the present invention is a specific embodiment of the structure of the low temperature roller of the digital printing machine. The embodiment comprises a rack 1, wherein a rotatable low-temperature roller 2 is arranged on the rack 1, a winding gap 3 for inputting and outputting media is arranged at the periphery of the low-temperature roller 2, a plurality of heat sources 4 are annularly arranged at the periphery of the low-temperature roller 2, the media are conveyed to the low-temperature roller 2 after being printed, the inner low-temperature roller 2 cools the inner surface of the media in the conveying process, and the outer heat sources 4 dry the outer surface of the media.

The utility model discloses when using, arrange in proper order on digital printing machine's frame 1 that medium blowing station 101, medium unreel and rectify station 102, medium surface corona treatment station 103, medium dust removal station 104, print station, stoving station, medium detection station 105, medium rolling and rectify station 106 and the material station 107 is received to the medium, the medium is carried in proper order between each station by a plurality of conveying rollers. A discharging roller arranged at the medium discharging station 101 is sleeved with coiled medium and outputs the coiled medium outwards; the medium is conveyed to pass through the medium unreeling deviation rectifying station 102, and the unreeling deviation rectifying device adjusts the axial front and back positions of the medium on the conveying roller, so that the position of a subsequent printed graph is accurate; the medium is conveyed to pass through a medium surface corona treatment station 103, and the surface of the medium is subjected to corona treatment by a corona treater, so that better adhesion and forming of subsequent printed patterns are ensured; the medium is conveyed to pass through the medium dust removal station 104, and impurities possibly remaining on the surface of the medium are removed by a dust remover, so that the influence of the impurities on the quality of a printed graph is avoided; the medium is conveyed to pass through a printing station, and the printing mechanism prints the pattern on the medium; the medium is conveyed to pass through a drying station, and the low-temperature roller 2 is matched with a heat source 4 to cool the inner surface of the medium and dry the outer surface of the medium; the medium is conveyed to pass through the medium detection station 105, and image information on the surface of the medium is collected by arranging an image collecting mechanism to confirm whether the printed graph is qualified or not; the medium is conveyed to pass through a medium winding deviation rectifying station 106, and the axial front and back positions of the medium on the conveying roller are adjusted by a winding deviation rectifying device, so that the subsequently wound medium is tidy; the media is finally transported to a media receiving station 107, and the media is collected and wound into a roll by a receiving roller.

As a core improvement point of the utility model, in the drying station, the low temperature roller 2 is far larger than the ordinary conveying roller, when the medium is coiled on the low temperature roller for conveying, the medium has sufficient time to be dried by the heat source 4 arranged on the periphery, the medium printed by the printing mechanism is conveyed from the gap 3 to the low temperature roller 2 for coiling, the inner low temperature roller 2 cools the inner surface of the medium in the coiling conveying process, and the outer heat source 4 dries the outer surface of the medium; in order to sufficiently dry the printed ink, the heat source 4 usually adopts a temperature of 60-70 ℃, sometimes the temperature needs to be adjusted to 80-100 ℃ to meet special drying requirements, at the moment, the low-temperature roller 2 keeps a low-temperature state of 5-10 ℃ under the action of the low-temperature roller 2 to cool the medium, so that the possibility of deformation of the medium due to high temperature is reduced, and the yield of products is ensured; the dried medium is output from the gap 3 and conveyed to the subsequent station.

As a modified embodiment, the cryogenic drum 2 is fed with gas or liquid for cooling from a central rotating shaft 21 through a pipeline 22.

As shown in fig. 5, in practical implementation, a circulating gas or liquid (the pipeline inside the low-temperature roller 2 is not shown in the drawing) may be introduced into the low-temperature roller 2 through the pipeline 22 at the rotating shaft 21, and the gas or liquid maintains a low temperature during introduction, so as to cool the low-temperature roller 2, and further cool the medium wound thereon; the gas or liquid with the increased temperature is output through the pipeline 22 to form the circulation of the gas or liquid. According to the embodiment, the cooling is realized, and meanwhile, part of the structure is arranged outside, so that the structure of the low-temperature roller 2 is simplified and light, and the manufacturing cost is reduced.

As a modified embodiment, a semiconductor refrigerating sheet or a cold and hot sheet for refrigerating is arranged in the low-temperature roller 2, and a power supply is externally connected to the rotating shaft 21 at the center of the low-temperature roller 2 to supply power to the semiconductor refrigerating sheet or the cold and hot sheet.

As shown in fig. 5, as another embodiment, the semiconductor cooling or heating plate disposed inside the low-temperature roller 2 is not shown in the drawing, and the semiconductor cooling or heating plate is operated by supplying power, so as to continuously lower the temperature of the low-temperature roller 2 itself and cool the medium wound thereon. The mechanism of the digital printer is more integrated, and the space occupied by the digital printer and the machine connected in a matching way can be reduced.

As a modified embodiment, the gap 3 opens above the cryogenic drum 2, and the medium is fed into and out of the cryogenic drum 2 through the upper gap 3.

As shown in fig. 1 and 4, in other embodiments, the gap 3 may be provided at two positions for inputting and outputting the medium, and may be selected according to the requirements of the medium conveying and the station arrangement position; in the embodiment, the input and output of the medium are realized by the gap 3 which is opened above the low-temperature roller 2 at one position, so that the medium which is conveyed in the front can reach the low-temperature roller 2 to be wound more smoothly, and the pattern which is printed on can be kept to stably reach the low-temperature roller 2 to be dried by the heat source 4; on the other hand, the periphery of the low-temperature roller 2 except the gap 3 is used for arranging the heat source 4, and the patterns printed on the medium can be sufficiently heated and dried in the conveying process of surrounding the whole low-temperature roller 2, so that the drying effect is ensured.

As a modified embodiment, an input roller 5 for inputting and winding the medium and an output roller 6 for outputting and winding the medium are respectively arranged at different height positions above the gap 3.

As shown in fig. 1 and 4, the printing mechanism is preferably arranged at a higher front portion with respect to the low-temperature cylinder 2, and a good support medium is conveyed from a relatively higher upper portion of the gap 3 to the low-temperature cylinder 2 by an input roller 5 for feeding the medium to be wound; an output roller 6 for outputting and winding the medium is arranged below the gap 3, the medium at the winding outlet bypasses the output roller 6, can bypass the low-temperature roller 2 from below and is continuously conveyed to a backward station; structural arrangement is reasonable on the whole, and the structural space is effectively utilized.

As a modified embodiment, a plurality of heat sources 4 are uniformly arranged at the peripheral position of the low-temperature roller 2 except the gap 3, and a heat dissipation space 7 is arranged between the adjacent heat sources 4.

As shown in fig. 1 and 4, the continuous and uniform drying of the periphery of the low-temperature roller 2 is maintained by uniformly arranging a plurality of heat sources 4, and the heat sources 4 are uniformly arranged in a component-based manner, so that the cost is lower compared with the integral periphery arrangement; and rely on the heat dissipation space 7 that sets up between the adjacent heat source 4, the circulation of air on the effectual holding structure to certain heat can be discharged, the condition that the medium warp is caused to the heat that the heat is difficult to disperse and takes place in the mechanism is too high, the potential safety hazard that even high temperature brought is avoided.

As a modified embodiment, the heat source 4 includes a disposition cover 41 and a heat generating pipe 42, a side of the disposition cover 41 is mounted on the frame 1 and is provided with an open cover opening 43 at a position facing the low-temperature drum 2, and the heat generating pipe 42 is mounted in the disposition cover 41 and transfers heat to the outside through the cover opening 43.

As shown in fig. 1, 2 and 3, the arrangement cover 41 forms a cavity, the heating tube 42 is arranged in the cavity, heat is transmitted to the medium on the low-temperature roller 2 by facing the cover opening 43 of the low-temperature roller 2, so as to dry the printing layer on the surface of the medium, the heat is well distributed on the periphery of the low-temperature roller 2 by virtue of the structure of the arrangement cover 41, a continuous drying process is carried out, and the space between the arrangement covers 41 is subjected to certain heat dissipation.

As a modified embodiment, the other side of the arrangement cover 41 opposite to the cover opening 43 is further provided with a fan 44, and the fan 44 blows air to the cover opening 43 to promote heat transfer outwards in operation.

As shown in fig. 1, 2 and 3, the further fan 44 is used as a wind source to blow the heat source of the heating tube 42 to the low-temperature drum 2 along the cover opening 43, so as to promote the flow of heat, dry the printed layer on the surface of the medium, make the surface of the medium fully contact with the heat, and cover the heat at the position of the cover 41 and the peripheral position thereof, so as to achieve uniform and sufficient drying effect.

As a modified embodiment, the arrangement cover 41 is a strip shape adapted to the width of the low temperature drum 2, and the fans 44 are provided in plural sets along the strip shape of the arrangement cover 41.

As shown in fig. 1, 2, and 3, in order to adapt to the width of the medium, i.e. the width of the medium wound by the low-temperature roller 2, a plurality of sets of fans 44 are provided to uniformly blow out heat in the width direction to cover the width position of the medium, so as to ensure uniform and sufficient drying.

As a modified embodiment, the arrangement cover 41 is mounted on the rack 1 through a mounting shaft 40, and external connection lines for supplying power to the heating tube 42 and the fan 44 are connected through a through hole on the mounting shaft 40.

As shown in fig. 2, 3 and 5, the mounting shaft 40 is fixedly mounted to the frame 1, the arrangement of the arrangement cover 41 is maintained in a circle, a good wiring space is formed in the through hole of the mounting shaft 40, the inside and outside of the circuit can be butted, and power is supplied to the heating tube 42 and the fan 44.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. Digital printing machine's low temperature cylinder structure, including frame (1), its characterized in that: the frame (1) is provided with a rotatable low-temperature roller (2), the periphery of the low-temperature roller (2) is provided with a winding gap (3) for inputting and outputting media, the periphery of the low-temperature roller is provided with a plurality of heat sources (4) which are annularly arranged, the media are conveyed to the low-temperature roller (2) after being printed, the inner low-temperature roller (2) cools the inner surface of the media in the conveying process, and the outer heat sources (4) dry the outer surface of the media.

2. The cryogenic cylinder structure of a digital printing press according to claim 1, characterized in that: the low-temperature roller (2) is filled with gas or liquid for cooling from a central rotating shaft (21) through a pipeline (22).

3. The cryogenic cylinder structure of a digital printing press according to claim 1, characterized in that: the low-temperature roller (2) is internally provided with a semiconductor refrigerating sheet or a cold and hot sheet for refrigeration, and a rotating shaft (21) at the center of the low-temperature roller (2) is externally connected with a power supply to supply power to the semiconductor refrigerating sheet or the cold and hot sheet.

4. The cryogenic cylinder structure of a digital printing machine according to claim 1, 2 or 3, characterized in that: the gap (3) is arranged above the low-temperature roller (2), and the medium is input into and output from the low-temperature roller (2) through the gap (3) above.

5. The cryogenic cylinder structure of a digital printing press according to claim 4, characterized in that: an input roller (5) for inputting and winding the medium and an output roller (6) for outputting and winding the medium are respectively arranged at different height positions above the gap (3).

6. The cryogenic cylinder structure of a digital printing press according to claim 4, characterized in that: the heat sources (4) are uniformly arranged at the peripheral positions of the low-temperature roller (2) except the gaps (3), and a heat dissipation space (7) is arranged between the adjacent heat sources (4).

7. The cryogenic cylinder structure of a digital printing machine according to claim 1, 2 or 3, characterized in that: the heat source (4) comprises a layout cover (41) and a heating pipe (42), the side edge of the layout cover (41) is installed on the rack (1) and an open cover opening (43) is arranged at the position facing the low-temperature roller (2), and the heating pipe (42) is installed in the layout cover (41) and transfers heat outwards through the cover opening (43).

8. The cryogenic cylinder structure of a digital printing press according to claim 7, characterized in that: the other side of the arrangement cover (41) opposite to the cover opening (43) is also provided with a fan (44), and the fan (44) blows air to the cover opening (43) to promote heat to be transferred outwards in work.

9. The cryogenic cylinder structure of a digital printing press according to claim 8, characterized in that: the arrangement cover (41) is a strip shape adapting to the width of the low-temperature roller (2), and the fans (44) are arranged into a plurality of groups along the strip shape of the arrangement cover (41).

10. The cryogenic cylinder structure of a digital printing press according to claim 8, characterized in that: the arrangement cover (41) is arranged on the rack (1) through a mounting shaft (40), and supplies power to the heating pipe (42) and the fan (44) through an external connection line through a through hole on the mounting shaft (40).