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CN-121973551-A - Direct-injection and direct-injection adsorption combined double-sided digital printing device and double-sided printing method

CN121973551ACN 121973551 ACN121973551 ACN 121973551ACN-121973551-A

Abstract

The invention discloses a double-sided digital printing device combining direct spraying and direct spraying adsorption and a double-sided printing method, which comprises a guide belt and a digital spray printer, wherein the guide belt is annular and can run through a guide belt roller support, the guide belt comprises a first printing and dyeing section, a second printing and dyeing section and a spacing section, the first printing and dyeing section is positioned at the upstream position of the second printing and dyeing section along the running direction of the guide belt, the spacing section is positioned between the first printing and dyeing section and the second printing and dyeing section, and a belt-shaped printing object to be dyed is guided to the spacing section of the guide belt through a guide roller and is mutually attached to the guide belt, and the belt-shaped printing object is separated from the first printing and dyeing section of the guide belt and is mutually attached to the second printing and dyeing section of the guide belt. According to the double-sided composite printing machine, by means of a single conduction band, different technological printing on two sides can be completed successively without physical overturning in the double-sided printing process, so that the deformation and alignment problems caused by overturning and displacement are thoroughly avoided, and the double-sided composite printing with high efficiency, high precision and high flexibility is realized.

Inventors

  • SONG SHUIYOU
  • FANG YINGLONG
  • LI HONGLI
  • SUN XINGXIN

Assignees

  • 浙江海印数码科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260113

Claims (10)

  1. 1. The double-sided digital printing device combining direct spray and direct spray adsorption is characterized by comprising a guide belt (1) and a digital spray printer (2), wherein the guide belt (1) comprises a first printing section (101), a second printing section (102) and a spacing section (103), the first printing section (101) is located at the upstream position of the second printing section (102) along the running direction of the guide belt (1), the spacing section (103) is located between the first printing section (101) and the second printing section (102), a strip-shaped printing object (6) to be dyed is guided to the spacing section (103) of the guide belt (1) through a guide roller (7) and is mutually attached to the guide belt (1), the strip-shaped printing object (6) is separated from the first printing section (101) of the guide belt (1) and is mutually attached to the second printing section (102) of the guide belt (1), the digital spray printer (2) comprises a plurality of digital spray printing modules (201), part of the digital spray printing modules (201) are located outside the first printing section (101) of the guide belt (1), and part of the digital spray printing modules (201) are used for printing the first printing surface of the first printing section (101) of the guide belt (1) to the first printing section (101) and part of the digital printing surface of the first printing section (101) to be used for printing the strip-shaped printing object (101).
  2. 2. The direct-injection and direct-injection adsorption combined double-sided digital printing device according to claim 1, wherein each digital printing module (201) of the digital printing machine (2) realizes image synchronization through a unified encoder signal.
  3. 3. The double-sided digital printing device combining direct injection and direct injection adsorption according to claim 1, wherein the digital printing machine (2) is a singlepass digital printing machine.
  4. 4. The double-sided digital printing device combining direct injection and direct injection adsorption according to claim 1, wherein a carrier roller (104) and a pressing roller (105) are arranged on a spacing section (103) of the guide belt (1), the carrier roller (104) is located on the inner periphery of the guide belt (1) and can support the guide belt (1), and the pressing roller (105) is located on the outer side of the guide belt (1) and is used for pressing a strip-shaped printing object (6) and the guide belt (1) mutually.
  5. 5. The double-sided digital printing device combining direct injection and direct injection adsorption according to claim 1, further comprising an on-line sizing device (4), wherein the on-line sizing device (4) is located at a spacing section (103) of the guide belt (1) and is located at a downstream position after the strip-shaped printing object (6) is attached to the guide belt (1), and the on-line sizing device (4) is used for sizing the surface of the strip-shaped printing object (6) attached to the guide belt (1).
  6. 6. The direct-injection and direct-injection adsorption combined double-sided digital printing device according to claim 1, further comprising a precoating device (8), wherein the precoating device (8) is located at the upstream position of the first printing section (101) of the guide belt (1) along the running direction of the guide belt (1) and is used for forming a precoat layer on the surface of the guide belt (1), and the strip-shaped printing object (6) can be adsorbed on the guide belt (1) through the precoat layer.
  7. 7. The direct-injection and direct-injection adsorption combined double-sided digital printing device according to claim 6, further comprising a cleaning device (5), wherein the cleaning device (5) is located at a position downstream of the second printing section (102) of the guide belt (1) and at a position upstream of the precoating device (8) in the running direction of the guide belt (1).
  8. 8. The direct-injection and direct-injection adsorption combined double-sided digital printing device according to claim 1, wherein digital printing modules (201) located in the first printing section (101) form a first digital printing unit (21), and digital printing modules (201) located in the second printing section (102) form a second digital printing unit (22); The first printing and dyeing section (101), the second printing and dyeing section (102) and the interval section (103) of the conduction band (1) are all positioned on the upper side of the conduction band (1), and the upper side surface of the conduction band (1) is horizontally arranged.
  9. 9. A direct-injection and direct-injection adsorption combined double-sided digital printing method, which is characterized in that a direct-injection and direct-injection adsorption combined double-sided digital printing device is adopted according to any one of claims 1-8; The method comprises the steps of coating a pre-coating liquid on the surface of a guide belt (1) to form a pre-coating layer, spraying a first image on the surface of the first printing and dyeing section (101) of the guide belt (1) through a digital spraying module (201) positioned outside the first printing and dyeing section (101), directly guiding a strip-shaped printing material (6) to a spacing section (103) of the guide belt (1) through the first printing and dyeing section (101), mutually attaching the first surface of the strip-shaped printing material (6) to the guide belt (1), transferring the first image to the first surface of the strip-shaped printing material (6), synchronously moving the strip-shaped printing material (6) and attaching the guide belt (1), enabling the second surface of the strip-shaped printing material (6) to face outwards, and spraying a second image on the second surface of the strip-shaped printing material (6) through the digital spraying module (201) positioned outside the second printing and dyeing section (102).
  10. 10. The direct-injection and direct-injection adsorption combined double-sided digital printing method according to claim 9, wherein the first image and the second image are identical, the images on both sides of the strip-shaped printing object (6) are overlapped with each other, or the first image and the second image are different, and the images on both sides of the strip-shaped printing object (6) are different.

Description

Direct-injection and direct-injection adsorption combined double-sided digital printing device and double-sided printing method Technical Field The invention relates to the technical field of textile printing and dyeing equipment, in particular to a direct-injection and direct-injection adsorption combined double-sided digital printing device and a double-sided digital printing method adopting the device to combine direct injection and direct injection adsorption. Background The double-sided printing technology is an important means for improving the added value of textiles and realizing the digitization and the green of printing and dyeing technology. Currently, mainstream double-sided printing technical schemes in the market all have certain limitations, and differentiation and high-precision printing of the front side and the back side of the fabric are difficult to realize under the premise of high efficiency, precision and low loss. At present, the common double-sided printing technical scheme mainly comprises: 1. Flat screen/cylinder screen double sided embossing, this solution typically requires two separate sets of embossing units. After finishing printing and pre-drying the first surface of the fabric, the fabric needs to be turned over by a mechanical turning mechanism, and then printing the second surface of the fabric is performed. The scheme has the main defects that firstly, the turnover process and the secondary on-machine alignment are extremely easy to cause serious overprinting inaccuracy problem due to fabric tension change and stretching deformation, the front and back face patterns are difficult to align accurately, and the defective rate is high. Secondly, the equipment flow is long, the occupied area is large, and two drying processes are needed, so that the energy consumption is high and the efficiency is low. 2. The scheme has flexibility but also faces challenges. The 'secondary cloth' mode of the main stream also has the problems of low efficiency and turnover alignment. The front edge single PASS double-sided synchronous jet printing technology has the advantages that the overturning step is eliminated theoretically, but the jet heads are required to precisely and synchronously jet printing on the upper side and the lower side or the left side and the right side of the fabric, the equipment manufacturing technology threshold is extremely high, the maintenance difficulty of the jet heads is extremely high, the patterns are easily blurred due to transparent printing and bleeding, the control requirements on the fabric organization structure, the ink performance and jet printing parameters are extremely strict, and the stability and the universality are insufficient. 3. The method can realize double-sided transfer printing, but is mainly suitable for chemical fiber fabrics such as terylene, needs to consume a large amount of transfer paper, has hard hand feeling, is not environment-friendly and has limited application range. The double-sided effect is generally consistent, and the patterns with completely different front and back sides are difficult to realize conveniently. In the technical direction of the current market, the technical scheme of AI real-time deformation compensation and high-precision constant tension closed-loop control is provided, but the technical compensation and the improvement based on the main stream scheme are still realized, the technical problem is not solved from the structure, and the AI technology has the problems of universality, high technical threshold and the like. Therefore, it is necessary to invent a solution to the problem of double-sided printing. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a direct-injection and direct-injection adsorption combined double-sided digital printing device and a double-sided printing method, which rely on a single conduction band, and can sequentially complete printing of different processes on two sides without physical overturning in the double-sided printing process, thereby thoroughly avoiding the deformation and alignment problems caused by overturning and displacement and realizing high-efficiency, high-precision and high-flexibility double-sided composite printing. In order to achieve the above purpose, the present invention adopts the following technical scheme: The double-sided digital printing device combining direct spraying and direct spraying adsorption comprises a guide belt and a digital spraying printer, wherein the guide belt comprises a first printing section, a second printing section and a spacing section, the first printing section is positioned at the upstream position of the second printing section along the running direction of the guide belt, the spacing section is positioned between the first printing section and the second printing section, a strip-shaped printing object to be dyed is guided to the spacing section of the guide belt t