阅读说明：本技术 一种滚动数字印刷装置 (Rolling digital printing device ) 是由 谢名优 赵希华 王培学 纪树滨 王培法 辛滨 李春花 于 2019-11-29 设计创作，主要内容包括：本发明提供一种滚动数字印刷装置,主要有滚筒,围绕滚筒按工序依次设置有清洁装置,第一涂布装置,干燥装置,第二涂布装置,喷印装置,上胶单元,复合单元,还包括承印物及其放卷机构,复合单元将承印物与经过滚筒多个工位所形成的转移层结合,转移层与承印物结合形成综合层后由导辊牵引离开复合单元与滚筒,综合层离开复合单元与滚筒后依次经过第一烘干装置、上光装置、第二烘干装置后由收卷机构收卷。本发明利用滚筒的切面、光滑度以及循环旋转等特点,形成一套结合转移层成型至承印物转移的数字印刷模式,能够保证产品质量稳定,故障率低,且提高生产效率。(The invention provides a rolling digital printing device, which mainly comprises a roller, wherein a cleaning device, a first coating device, a drying device, a second coating device, a jet printing device, a gluing unit and a compound unit are sequentially arranged around the roller according to working procedures, the compound unit combines a printing stock with a transfer layer formed by a plurality of stations of the roller, the transfer layer is combined with the printing stock to form a combined layer, then the combined layer is pulled away from the compound unit and the roller by a guide roller, and the combined layer is wound by a winding mechanism after sequentially passing through the first drying device, a glazing device and the second drying device after leaving the compound unit and the roller. The invention utilizes the characteristics of section, smoothness, circular rotation and the like of the roller to form a set of digital printing mode for combining the forming of the transfer layer to the transfer of the printing stock, thereby ensuring the stable product quality, having low failure rate and improving the production efficiency.)

1. A rolling digital printing apparatus, characterized by: the roller printing machine mainly comprises a roller (1), a cleaning device (2), a first coating device (3), a drying device (4), a second coating device (5), a jet printing device (6), a gluing unit (7) and a composite unit (8) are sequentially arranged around the roller (1) according to working procedures, and further comprises a printing stock (81) and an unwinding mechanism (17) thereof, wherein the composite unit (8) combines the printing stock (81) with a transfer layer (82) formed by a plurality of working positions of the roller (1), and the transfer layer (82) is pulled away from the composite unit (8) and the roller (1) by a guide roller after being combined with the printing stock (81) to form a comprehensive layer.

2. A roll digital printing apparatus as claimed in claim 1, wherein: the integrated layer leaves the composite unit (8) and the roller (1), sequentially passes through the first drying device (11), the glazing device (14) and the second drying device (15), and is wound by the winding mechanism (16).

3. A roll digital printing apparatus according to claim 1 or 2, wherein: the roller (1) and/or the compound unit (8) are driven by a servo motor.

4. A roll digital printing apparatus as claimed in claim 3, wherein: the first coating device (3) is used for coating the separation layer, and the second coating device (5) is used for coating the adaptation layer.

5. A rolling digital printing apparatus as claimed in claim 4, wherein: the gluing unit (7) is a glue spraying device (71) and/or a full-plate gluing device (72).

6. A rolling digital printing apparatus as claimed in claim 4, wherein: and an alignment detection device (80) is arranged on one side of the composite unit (8).

7. A roll digital printing apparatus as claimed in claim 2, wherein: the glazing device (14) is a local glazing device (18) and/or a full-page glazing device (19).

8. A roll digital printing apparatus as claimed in claim 7, wherein: a glazing detection device (141) is arranged on one side of the glazing device (14).

Technical Field

The invention relates to the technical field of digital printing, in particular to a rolling digital printing device.

Background

With the development of big data and the progress of mobile terminals, variable two-dimensional codes become important means for commodity information storage and anti-counterfeiting, especially under an intelligent network, one-object-one-code is needed, the variable two-dimensional codes are used on cigarette packets and medicine boxes in large batch at present, and a foundation is provided for intelligent logistics and sales management and control, so that digital jet printing becomes a new printing mode and gradually appears in printing enterprises.

At present, with the development of society, personalized printing or small-batch and multi-variety printing is more and more, the traditional printing mode is challenged because of the problems that the production conversion time is long, the cost of auxiliary materials such as plates is high and the like in the traditional printing modes such as offset printing, gravure and the like, and the digital printing mode is just the optimal selection of small-batch and multi-variety printing because a printing roller is not required to be manufactured in each printing mode. However, the digital printing method has a certain problem, which is mainly reflected in that the requirement on the printing stock is high, because the jet printing ink cannot adapt to the surfaces of all the printing stocks, and the jet nozzle of the jet printing is very precise, when the jet printing is carried out at a very short distance from the printing stock and moves at a high speed, dust on the printing stock or the printing stock is easy to frequently contact with the jet nozzle, so that the normal jet printing cannot be carried out.

Disclosure of Invention

The invention aims to provide a rolling digital printing device aiming at the prior technical situation, which forms a comprehensive integrated printing process flow, stabilizes the digital printing quality, reduces the failure rate and improves the efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

a rolling digital printing device mainly comprises a roller, a cleaning device, a first coating device, a drying device, a second coating device, a spray printing device, a gluing unit and a composite unit are sequentially arranged around the roller according to working procedures, the rolling digital printing device also comprises a printing stock and an unwinding mechanism thereof, the composite unit combines the printing stock with a transfer layer formed by a plurality of stations of the roller, and the transfer layer is pulled away from the composite unit and the roller by a guide roller after being combined with the printing stock to form a comprehensive layer.

In the above scheme, the integrated layer leaves the composite unit and the roller and then is rolled by the rolling mechanism after sequentially passing through the first drying device, the glazing device and the second drying device.

Further, the drum and/or the compound unit are driven by a servo motor.

Further, the first coating device is used for coating the separation layer, and the second coating device is used for coating the adaptive layer.

Furthermore, the gluing unit is a glue spraying device and/or a full-plate gluing device.

Furthermore, one side of the composite unit is provided with an alignment detection device.

Further, the glazing device is a local glazing device and/or a full-page glazing device.

Furthermore, a glazing detection device is arranged on one side of the glazing device.

The invention has the beneficial effects that: the digital printing is adopted as a process foundation, and by utilizing the stability and the fixity of the surface form of the roller, the distance between the digital jet printing position and the surface of the roller can be minimized, the jet printing speed and the jet printing quality are improved, and meanwhile, the problems that a nozzle is easily damaged by a printing stock, dust on the printing stock is easily blocked and the like can be solved; in addition, by utilizing the characteristics of circular rotation of the roller and the like, a set of digital printing mode combining the forming of the transfer layer to the compounding of the printing stock is formed, the digital printing mode can meet the requirements of various materials, the processes of full-plate on-site printing, full-plate pattern transfer, local printing pattern transfer, full-plate glazing, local positioning glazing and the like can be selected according to requirements, the digital printing mode has diversified selection, the consistency of printing positions, the accuracy of pattern positioning transfer, the smoothness of a jet printing process and the stability of the whole operation process are ensured, the stable product quality and the low failure rate can be ensured, and the production efficiency is improved.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows:

referring to fig. 1, a schematic structural diagram of a preferred embodiment of the present invention is shown, in which the present invention is a rolling digital printing apparatus, and a printing method thereof includes: utilize cylinder 1 continuous rotation, at first belt cleaning device 2 cleans cylinder 1 surface, form separating layer 31 through coating drying device 4 again, and then coat on separating layer 31 and form adaptation layer 51, separating layer 31 and adaptation layer 51's combination form transfer layer 82, spout the seal on adaptation layer through spouting printing device 6 again, form the printing layer that has the printing pattern, then the rubberizing, again with stock 81 bonding formation integrated layer, integrated layer can peel off cylinder 1, the cylinder enters into the rete coating of new round again after the cleaning station is cleaned, superpose and compound, and integrated layer later stage is through drying, a series of processes such as peeling off, finally realize the transfer of printing pattern.

The specific structure is that a roller 1 is mainly provided, a cleaning device 2, a first coating device 3, a drying device 4, a second coating device 5 are sequentially arranged around the roller 1 according to the working procedures, and a second group of drying devices (not shown in the figure), a jet printing device 6, a gluing unit 7 and a compounding unit 8 can be additionally arranged behind the second coating device 5 according to the requirements. The first coating device 3 is used for coating the separation layer, is high in smoothness, is convenient to peel off from the roller 1 at the later stage, forms a protective film of a printing stock on the uppermost surface of the integration layer, dries the separation layer 31 by adopting UV lamp drying or infrared hot air drying in the drying device 4, and then coats the adaptation layer 51 by the second coating device 5, wherein the adaptation layer 51 mainly improves the adaptation capability of the ink, can adapt to various inks, and has lower requirements on the ink for jet printing compared with the printing stock 81. The transfer layer 82 formed by combining the separation layer 31 and the adaptive layer 51 is directly rotated to the inkjet printing device 6 for inkjet printing, and the inkjet printing device 6 may be composed of a plurality of inkjet printing units and a drying unit, and may be configured as required. Because the transfer layer is directly attached to the roller 1 for forming, when entering the station of the spray printing device 6, a smooth tangent point spray printing area is formed with the spray printing device 6, thus not only minimizing the distance between the spray head and the transfer layer, but also avoiding the spray head from being damaged, improving the efficiency and reducing the faults.

The compound unit 8 adopts a driven roller, is pressed on the roller 1 when needing compound, and is in a pressure-releasing state when not needing compound.

After the spray printing of the transfer layer 82 is completed and the glue is applied, the composite unit 8 should enter the printing stock 81 to be compounded, therefore, the equipment further comprises the printing stock 81 and the unwinding mechanism 17 thereof, the composite unit 8 combines the printing stock 81 with the transfer layer 82 formed by a plurality of stations of the roller 1, the transfer layer 82 is combined with the printing stock 81 to form an integrated layer, and then the integrated layer is pulled away from the composite unit 8 and the roller 1 by a guide roller, so that the coating, the spray printing and the compounding of the transfer layer are completed, an initial pattern transferring and attaching process is formed, after the integrated layer leaves the roller 1, the roller 1 is cleaned by the cleaning device 2 and then enters the first coating unit 3 again, and the initial pattern transferring process is ensured to be continuously carried out.

The cleaning device 2 can be a scraper, or the scraper is combined with warm water spray cleaning and a rotary roller wrapped with rag and a blower, so that leftover materials or adhered particles left by the separation layer 31 on the roller 1 are cleaned clearly, and the leftover materials or adhered particles can enter the first coating device 3 again to coat the separation layer 31.

The roller 1 and/or the composite unit 8 are driven by a servo motor, namely the roller 1 can be driven by the servo motor alone, or the composite unit 8 can be driven by the servo motor alone, or both the roller 1 and the composite unit 8 can be driven by the servo motor, and the speed can be controlled to be consistent.

In addition, an alignment detection device 80 is arranged on one side of the composite unit 8, a detection sensor (not shown in the figure) is arranged on the jet printing device 6, and an encoder is also required to be arranged on the roller 1 and/or the composite unit 8, so that the detection sensor is used for knowing the time for the jet printing device 6 to start jet printing, or the alignment detection device 80 is used for knowing the position of a pattern on a printing stock 81, and the encoder is used for acquiring the distance between the positioning and transferring positions of the alignment detection device and the printing stock, so that the jet printing image-text and the pattern of the printing stock 81 are accurately aligned and overprinted by adjusting the start time of the.

In order to meet the process requirement, the integrated layer leaves the composite unit 8 and the roller 1, sequentially passes through the first drying device 11, the glazing device 14 and the second drying device 15, and is wound by the winding mechanism 16.

Specifically, the gluing unit 7 is a glue spraying device 71 and/or a full-plate gluing device 72, if the gluing unit 7 is used as a comprehensive device, the gluing unit 7 should include the glue spraying device 71 and the full-plate gluing device 72, and a pre-drying device (not shown in the figure) is also included, the glue spraying device 71 only needs to spray glue on the surface of the transfer layer 82 through a spray head, a coating roller of the full-plate gluing device 72 should be provided with a moving cylinder, and when the transfer layer 82 needs full-plate coating gluing according to the coating process requirements, the moving cylinder of the transfer layer 82 pushes the coating roller to be matched and connected with the transfer layer 82, so that the positioning glue spraying transfer or the random switching of the water-based glue and full-plate glue transfer can be met, and the glue spraying device can be pressed with the printing stock 81 after the same pre-drying device.

The glazing unit 14 is a partial glazing unit 18 and/or a full-size glazing unit 19, and if it is a comprehensive device, the glazing unit 14 should include the partial glazing unit 18 and the full-size glazing unit 19, and a glazing detection unit 141 should be provided on one side of the glazing unit 14, and when partial glazing is required, the glazing position is detected by the glazing detection unit 141. And a upgrading ink box is arranged below the full-plate glazing device 19, and when full-plate glazing is needed, the ink box rises to a position to be in contact with a printing stock 81, so that switching of local positioning glazing or full-plate glazing is met.

The second drying device 15 comprises UV lamp drying and oven drying, and is switched according to process requirements, and if the local positioning glazing is performed, the UV gloss oil and the UV lamp are used for drying, and if the water-based full plate glazing is performed, the oven drying is used for drying.

The working process is as follows: the roller 1 is driven by a servo motor to uniformly rotate at a certain speed, all devices are in a release state before the roller 1 starts to work, a cleaning device 2 is used for cleaning the surface of the roller, then a first coating device 3 is used for laminating and coating a separation layer 31 on the surface of the roller 1, the separation layer 31 is characterized in that the separation layer is easily separated from the roller 1 after a film layer is formed, a drying device 4 is used for drying the separation layer, then a second coating device 5 is used for laminating and coating an adaptive layer 51 on the separation layer 31, the adaptive layer 51 is used for enhancing the adaptability of later spray printing ink, the adaptive layer 51 is matched with the spray printing ink, the spray printing ink is sprayed and printed on the adaptive layer, the effect is best, the spray printing adaptability and the spray printing effect are enhanced, when a coating pattern passes through the spray printing device 6, the spray printing device 6 is used for digital spray printing and can directly perform spray printing on the adaptive layer, the variable information can be sprayed and printed without other auxiliary processes such as plate making and the like, the spraying and printing device 6 is used for spraying and printing a printing layer on the adaptive layer 51, the spraying and printing work of pictures and texts is carried out according to the requirement, drying is carried out in the spraying and printing process, after all the pictures and texts are sprayed and printed, the gluing unit 7 is used for pressing, a layer of transparent glue is arranged on the printing layer and is pre-dried, then the composite unit 8 is used for pressing, the printing stock 81 is combined with the transfer layer 82 through a glue layer under certain pressure, then the separation layer 31 is separated from the roller 1, the finally printed patterns are transferred onto the printing stock 81 to form the printed pictures and texts, and the cleaning device 2 is used for cleaning the surface of the separated roller 1 to complete a work cycle.

It should be understood that the above-mentioned drawings are merely illustrative of the preferred embodiments of the present invention, and that the scope of the invention is not limited thereto.