CN217294019U

CN217294019U - Digital printing machine

Info

Publication number: CN217294019U
Application number: CN202220470985.4U
Authority: CN
Inventors: 董霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-08-26
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a digital printing machine, which comprises a frame and a plurality of conveying roller, medium blowing station has set gradually along the conveying roller in the frame, the colored printing station of medium, stoving station and medium rolling station, the stoving station includes rotatable low temperature cylinder and sets up a plurality of heat sources in the low temperature cylinder periphery, in stoving station department, the conveying roller of stoving station input is walked around in proper order to the medium, low temperature cylinder in the stoving station, the conveying roller of stoving station output, in the transportation process of stoving station, inboard low temperature cylinder carries out the cooling of medium internal surface, the outside heat source carries out the stoving of medium surface. Orderly conveying media and finishing printing and drying through sequential multi-station arrangement; the printed medium is conveyed to a drying station, the inner surface of the medium is cooled through a low-temperature roller, and a printing layer on the outer surface of the medium is dried by a heat source, so that the medium is prevented from deforming, and the yield is ensured.

Description

Digital printing machine

Technical Field

The utility model relates to a printing machine field, more specifically the 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 easy to cause deformation of the film or paper, thereby influencing the printing yield. Therefore, how whole digital printing machine carries out orderly transport processing and carries out effectual cooling at the stoving in-process to the medium is the utility model discloses the problem that will solve.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a digital printing machine, it carries out orderly transport processing to the medium, through carry the medium after printing on convoluteing to the low temperature cylinder, carries out the mode that the inboard cooling of medium, outside were dried in follow-up transportation process, 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: digital printing machine, including the frame and set up a plurality of conveying rollers that are used for the medium in the frame around establishing, medium blowing station has set gradually along the conveying roller in the frame, medium color printing station, stoving station and medium rolling station, the stoving station includes a rotatable low temperature cylinder and sets up a plurality of heat sources in the low temperature cylinder periphery, in stoving station department, the conveying roller of stoving station input is walked around in proper order to the medium, low temperature cylinder in the stoving station, the conveying roller of stoving station output, in the transportation process of stoving station, inboard low temperature cylinder carries out the cooling of medium internal surface, the outside heat source carries out the stoving of medium surface.

As an improvement, an unreeling deviation correcting station is further arranged in the subsequent step of the medium discharging station, and a reeling deviation correcting station is further arranged in the preceding step of the medium reeling station.

As an improvement, a medium surface corona treatment station and a medium dust removal station are sequentially arranged between the medium discharging station and the medium color printing station.

As an improvement, a medium detection station is also arranged between the drying station and the medium winding station.

As an improvement, the medium detection station conveys the medium in a plane state through a plurality of conveying rollers, and an image acquisition mechanism is arranged to be over against the medium in the plane state to acquire image information.

As an improvement, the conveying roller at the input end of the drying station and the conveying roller at the output end of the drying station are both positioned above the low-temperature roller, a medium is input into and output from the low-temperature roller from the upper part, a plurality of heat sources are uniformly arranged at the peripheral positions except the upper part of the low-temperature roller, 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 plurality of fans, the fans are arranged along the axial direction of the arrangement cover opposite to the low-temperature roller, and the fans blow air to the cover opening to promote heat to be transferred outwards when in work.

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.

The utility model has the advantages that: the media feeding station, the media color printing station, the drying station and the media winding station are sequentially arranged, so that the media are orderly conveyed, and printing and drying are completed; the printed medium is conveyed to a drying station, the low-temperature roller is wound and cools the inner surface of the medium in the inner side in the conveying process, the heat source on the periphery of the outer side of the low-temperature roller dries the printing layer on the outer surface of the medium, the inner surface of the medium keeps a lower temperature than the outer surface while the drying and solidification of the printed pattern are ensured, the deformation of the thin medium caused by high temperature is avoided, and the printing yield is ensured.

Drawings

Fig. 1 is a schematic view of the front three-dimensional structure of the present invention.

Fig. 2 is the utility model discloses a spatial structure schematic diagram of stoving station.

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

Fig. 4 is a schematic perspective view of a heat source according to the present invention.

Fig. 5 is a schematic view of a reverse three-dimensional structure of the present invention.

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, it is a specific embodiment of the digital printer of the present invention. The embodiment comprises a rack 1 and a plurality of conveying rollers 0 arranged on the rack 1 and used for winding media, wherein a medium discharging station 2, a medium color printing station 3, a drying station 4 and a medium winding station 5 are sequentially arranged on the rack 1 along the conveying rollers 0, the drying station 4 comprises a rotatable low-temperature roller 41 and a plurality of heat sources 42 arranged on the periphery of the low-temperature roller 41, the media sequentially bypass the conveying rollers 0 at the input end of the drying station 4, the low-temperature roller 41 in the drying station 4 and the conveying rollers 0 at the output end of the drying station 4 at the position of the drying station 4, the inner low-temperature roller 41 cools the inner surface of the media in the conveying process of the drying station 4, and the outer heat sources 42 dry the outer surface of the media.

The utility model discloses when using, arrange medium blowing station 2, medium color printing station 3, stoving station 4 and medium rolling station 5 in proper order on digital printing machine's frame 1, the medium is carried in proper order between each station by a plurality of conveying rollers 0. A discharging roller arranged at the medium discharging station 2 is sleeved with the coiled medium and outputs the coiled medium outwards; the medium is conveyed to pass through a medium color printing station 3, and the printing mechanism prints the pattern on the medium; the medium is conveyed to pass through a drying station 4, and is cooled on the inner surface of the medium and dried on the outer surface of the medium by the cooperation of a low-temperature roller 41 and a heat source 42; the medium is conveyed to a medium winding station 5, and the medium is collected and wound into a roll by a material collecting roller. Through the multi-station matched conveying of the conveying rollers 0 in sequence, the ordered output and collection of media are realized, and the printing and drying processes are completed in the process. At the drying station 4, the low-temperature roller 41 is arranged far more than the ordinary conveying roller 0, so that when the medium is wound on the low-temperature roller and conveyed, the medium with sufficient time is dried by the heat source 42 arranged on the periphery, the medium printed by the printing mechanism is conveyed to the low-temperature roller 41 to be wound, the inner surface of the medium is cooled by the inner low-temperature roller 41 in the winding and conveying process, and the outer surface of the medium is dried by the outer heat source 42; in order to sufficiently dry the printed ink, the heat source 42 usually adopts a temperature of 60-70 ℃, sometimes the temperature needs to be adjusted to 80-100 ℃ to meet special drying requirements, at this time, the low-temperature roller 41 keeps a low-temperature state of 5-10 ℃ through the action of the low-temperature roller 41 to cool the medium, thereby reducing the possibility of deformation of the medium due to high temperature and ensuring the yield of products; the dried medium is output to the subsequent conveying roller 0, so that the medium can be conveyed to the subsequent station in order.

As an improved specific implementation mode, an unreeling deviation correcting station 21 is further arranged in the rear sequence of the medium discharging station 2, and a reeling deviation correcting station 51 is further arranged in the front sequence of the medium reeling station 5.

As shown in fig. 1, an unwinding deviation rectifying station 21 is further arranged at the subsequent stage of the medium discharging station 2, and when the medium is conveyed through the unwinding deviation rectifying station 21, the unwinding deviation rectifying device adjusts the axial front-back position of the medium on the conveying roller 0, so that the subsequent position for printing the graph is accurate. A winding deviation-correcting station 51 is further arranged in the preamble of the medium winding station 5, and when the medium is conveyed to pass through the winding deviation-correcting station 51, the axial front and rear positions of the medium on the conveying roller are adjusted by a winding deviation corrector, so that the medium wound to the medium winding station 5 in the subsequent step is kept orderly, and the subsequent conveying and packaging are facilitated.

As a modified specific implementation mode, a medium surface corona treatment station 22 and a medium dust removal station 23 are further arranged between the medium discharging station 2 and the medium color printing station 3 in sequence.

As shown in fig. 1, after two additional stations are further provided, when the medium is conveyed to pass through the medium surface corona treatment station 22, the corona treater performs corona treatment on the medium surface to ensure better adhesion and forming of subsequent printed patterns; when the medium is conveyed to pass through the medium dust removal station 23, the dust remover removes impurities possibly remaining on the surface of the medium, so that the influence of the impurities on the quality of a printed pattern is avoided, and the better printing yield of the machine is ensured.

As a modified specific embodiment, a medium detection station 52 is further arranged between the drying station 4 and the medium winding station 5.

As shown in fig. 1 and 2, after the printing and drying processes, the medium is conveyed to a medium detection station 52, and the image information on the surface of the medium is acquired by setting an image acquisition mechanism, so that whether the printed graph is qualified or not is confirmed, and then the printed product can be subjected to a direct quality inspection process without manual inspection, so that the medium is more intelligent and labor is liberated.

As a modified embodiment, the medium detection station 52 conveys the medium in a planar state through a plurality of conveying rollers 0, and an image acquisition mechanism is arranged to acquire image information of the medium in the planar state.

As shown in fig. 1 and 2, in specific implementation, the medium is conveyed by two conveying rollers 0 in a planar state, an image acquisition mechanism, such as a camera, is arranged above the medium, the image acquisition mechanism shoots the image on the medium, the image is transmitted to a control module, the control module prestores the image information of qualified products, and whether the printed and dried formed image meets the standard or not can be judged by comparison; if the standard is not met, the debugging of the machine still has certain problems, so that the debugging is convenient for workers to find in time, the machine is debugged, the debugging to the required state is ensured, the subsequently processed products meet the standard, and the finished product rate is prevented from being influenced by the defects of the products in one batch.

As a modified embodiment, the conveying roller 0 at the input end of the drying station 4 and the conveying roller 0 at the output end of the drying station 4 are both positioned above the low-temperature roller 41, a medium is input into and output from the low-temperature roller 41 from the upper part, a plurality of heat sources 42 are uniformly arranged at the peripheral positions except the upper part of the low-temperature roller 41, and a heat dissipation space 40 is arranged between the adjacent heat sources 42.

As shown in fig. 1 and 2, in other embodiments, the medium input and output drying station 4 may be disposed at two positions for inputting and outputting the medium, respectively, and may be selected according to the requirements of medium transportation and station arrangement position; in this embodiment, the input and output of the medium are realized by a space located above the low-temperature roller 41, so that the medium conveyed in the previous step can reach the low-temperature roller 41 to be wound more smoothly, and the pattern just printed can be stably reached to the low-temperature roller 41 to be dried by the heat source 42; on the other hand, the periphery of the low-temperature roller 41 except the space is used for arranging the heat source 42, and the patterns printed on the medium can be sufficiently heated and dried in the conveying process around the whole low-temperature roller 41, so that the drying effect is ensured; the continuous and uniform drying of the periphery of the low-temperature roller 41 is kept through the uniformly arranged heat sources 42, and the heat sources 42 are arranged uniformly in a part-by-part manner, so that the cost is lower compared with the integral periphery arrangement; and the heat dissipation space 40 arranged between the adjacent heat sources 42 is used for effectively keeping the air circulation on the structure, thereby discharging certain heat, and avoiding the situation that the medium is deformed due to overhigh heat caused by difficult heat dissipation in the mechanism, even potential safety hazards caused by high temperature.

As a modified embodiment, the heat source 42 includes a disposition cover 421 and a heat generating pipe 4222, a side of the disposition cover 421 is mounted on the frame 1 and is provided with an open cover opening 423 at a position facing the low temperature drum 41, and the heat generating pipe 4222 is mounted in the disposition cover 421 and transfers heat to the outside through the cover opening 423.

As shown in fig. 2, 3 and 4, the cover 421 is arranged to form a cavity, the heating tube 422 is arranged in the cavity, heat is transferred to the medium on the low-temperature roller 41 through the cover opening 423 facing the low-temperature roller 41, so as to dry the printed layer on the surface of the medium, the heat is well distributed around the low-temperature roller 41 by virtue of the structure of the cover 421, a continuous drying process is performed, and the space between the covers 421 is arranged to dissipate heat to a certain extent.

As a modified embodiment, the other side of the arrangement cover 421 relative to the cover opening 423 is further provided with a plurality of fans 424, the plurality of fans 424 are arranged along the axial direction of the arrangement cover 421 relative to the low-temperature roller 41, and the plurality of fans 424 blow air to the cover opening 423 to promote heat transfer outwards during operation.

As shown in fig. 2, 3 and 4, the further fan 424 is used as a wind source to blow the heat source of the heating tube 422 to the low-temperature roller 41 better along the cover opening 423, 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 achieve uniform and sufficient drying effect by well covering the heat at the position of the cover 421 and the peripheral position. In order to adapt to the width of the medium, namely the width of the medium wound by the low-temperature roller 41, a plurality of groups of fans 424 are arranged, and the heat uniformly blown out in the width direction covers the width position of the medium, so that the uniformity and the sufficiency of drying are ensured.

As a modified embodiment, the low-temperature roller 41 is introduced with gas or liquid for cooling from a central rotating shaft 411 through a pipeline 412.

As shown in fig. 5, in practical implementation, a circulating gas or liquid (the pipeline inside the low-temperature roller 41 is not shown in the drawing) may be introduced into the low-temperature roller 41 through the pipeline 412 at the rotating shaft 411, and the gas or liquid maintains a low temperature during introduction, so as to cool the low-temperature roller 41, and further cool the medium wound thereon; the gas or liquid with the increased temperature is output through the pipe 412, and the circulation of the gas or liquid is formed. In such an embodiment, a part of the structure is externally arranged while cooling is realized, so that the structure of the low-temperature roller 41 itself is simplified and light, and the manufacturing cost is reduced.

As a modified embodiment, a semiconductor refrigeration piece or a cold and hot piece for refrigeration is arranged in the low-temperature roller 41, and a power supply is externally connected to the rotating shaft 411 at the center of the low-temperature roller 41 to supply power to the semiconductor refrigeration piece or the cold and hot piece.

As shown in fig. 5, as another embodiment, the semiconductor cooling or heating plate disposed inside the low-temperature roller 41 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 41 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.

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, including frame (1) and set up be used for the medium on frame (1) around a plurality of conveying rollers (0) of establishing, frame (1) is gone up and is set gradually medium blowing station (2), medium color printing station (3), stoving station (4) and medium rolling station (5), its characterized in that along conveying roller (0): drying station (4) include a rotatable low temperature cylinder (41) and set up in a plurality of heat sources (42) on low temperature cylinder (41) periphery, and at drying station (4), the medium is walked around conveying roller (0) of drying station (4) input, low temperature cylinder (41) in drying station (4), conveying roller (0) of drying station (4) output in proper order, and in the transportation process of drying station (4), inboard low temperature cylinder (41) carry out the cooling of medium internal surface, and outside heat source (42) carry out the stoving of medium surface.

2. The digital printer according to claim 1, wherein: an unreeling deviation-rectifying station (21) is further arranged in the subsequent step of the medium unreeling station (2), and a reeling deviation-rectifying station (51) is further arranged in the preceding step of the medium reeling station (5).

3. The digital printer according to claim 1 or 2, characterized in that: and a medium surface corona treatment station (22) and a medium dust removal station (23) are sequentially arranged between the medium discharging station (2) and the medium color printing station (3).

4. The digital printer according to claim 1 or 2, characterized in that: and a medium detection station (52) is also arranged between the drying station (4) and the medium winding station (5).

5. The digital printer according to claim 4, wherein: the medium detection station (52) conveys the medium to be in a plane state through a plurality of conveying rollers (0), and an image acquisition mechanism is arranged to be over against the medium in the plane state to acquire image information.

6. The digital printer according to claim 1 or 2, characterized in that: conveying rollers (0) at the input end of the drying station (4) and conveying rollers (0) at the output end of the drying station (4) are both located above the low-temperature roller (41), the medium is input into and output from the low-temperature roller (41) from the upper side, the plurality of heat sources (42) are uniformly arranged at the peripheral positions except the upper side of the low-temperature roller (41), and a heat dissipation space (40) is arranged between every two adjacent heat sources (42).

7. The digital printer according to claim 6, characterized in that: the heat source (42) comprises a layout cover (421) and a heating pipe (422), the side edge of the layout cover (421) is installed on the frame (1) and an open cover opening (423) is arranged at the position facing the low-temperature roller (41), and the heating pipe (422) is installed in the layout cover (421) and transfers heat outwards through the cover opening (423).

8. The digital printer according to claim 7, wherein: the other side of the arrangement cover (421) opposite to the cover opening (423) is also provided with a plurality of fans (424), the fans (424) are arranged along the axial direction of the arrangement cover (421) opposite to the low-temperature roller (41), and the fans (424) blow air to the cover opening (423) during work to promote heat to be transferred outwards.

9. The digital printer according to claim 6, characterized in that: the low-temperature roller (41) is introduced with gas or liquid for cooling from a central rotating shaft (411) through a pipeline (412).

10. The digital printer according to claim 6, characterized in that: the low-temperature roller (41) is internally provided with a semiconductor refrigerating sheet or a cold and hot sheet for refrigeration, and a rotating shaft (411) at the center of the low-temperature roller (41) is externally connected with a power supply to supply power to the semiconductor refrigerating sheet or the cold and hot sheet.