CN219486924U - Digital online spray printing glue printing device - Google Patents

Abstract

The utility model belongs to the field of digital printing equipment, and discloses a digital online glue printing device. The printing device comprises a printing unit, a drying unit and a tail gas treatment unit; the medium output port of the printing unit is connected with a bottom plate heating device, and a drying unit is fixed on the bottom plate heating device. The drying unit is composed of an area a drying device and an area b drying device which are connected to form a slope through an included angle, and an exhaust gas collecting unit is connected between the area a drying device and the area b drying device through a pipeline and connected with an exhaust gas treatment unit through a pipeline. The tail end of the drying device in the zone b is connected with an air cooling device. The printing unit nozzle adopts three groups of ink nozzles of color ink, white ink and jet printing glue to be sequentially arranged. The printing system is environment-friendly and noiseless, and overcomes the defects of the existing solid sizing or silk screen sizing modes. The transfer printing can be realized on various boards of pure cotton fabric, polyester fabric, blended fabric, leather, plastic and metal according to the requirements.

Description

Digital online spray printing glue printing device

Technical Field

The utility model belongs to the field of digital printing equipment, and relates to a digital online spray printing glue printing device which is suitable for a thermal transfer printing or pressure-sensitive transfer printing process in the fields of digital printing and digital printing.

Background

Digital ink-jet printing is an energy-saving and environment-friendly technology greatly popularized in China, and the development of thermal sublimation transfer printing is particularly rapid. The thermal sublimation transfer printing is to print disperse dye ink onto transfer paper according to sublimation characteristic of disperse dye, and transfer the dye onto fabric in a heating/pressurizing mode to form a product. The process has no waste water (waste is mainly waste paper after transfer printing), and promotes the popularization of digital printing of polyester fabrics.

The main current process in the market is powder shaking film transfer printing. The main process of the powder shaking film transfer printing is as follows: printing the designed pattern on the PET release film by using an ink-jet printer; coating a layer of hot melt powder on the printed pattern through a powdering process; placing the cloth or medium on the cloth or medium, and transferring the cloth or medium to the cloth or medium at high temperature through a pressing machine; and tearing off the PET film through hot tearing or cold tearing after transfer printing to finish manufacturing. For example, CN 114312085A discloses a method for producing white ink pyrograph, which comprises the following steps: spraying: spraying the color pattern on a transfer printing film with an ink curing pattern layer to obtain a transfer printing pattern, and spraying white ink on the transfer printing pattern; spreading hot melt powder on the ink solidified pattern layer; baking the transfer film with the hot melt powder, and sintering the hot melt powder into a hot melt film layer; and pressing the transfer printing film with the white ink on a required object for transfer printing, and tearing off the transfer printing film. However, the powder shaking film transfer printing process has the following defects: the hot melt powder is scattered on the ink curing pattern layer by using a powder shaking machine, so that the uniformity is poor, and the hot melt powder is partially wasted; the powder shaking machine has high noise and is easy to cause dust pollution. In addition, most of drying equipment matched with a powder shaking film transfer printing system in the current market is in a lamp tube heating mode, so that energy consumption is increased; more importantly, the heating temperature cannot be controlled, and corresponding adjustment cannot be made according to different products. Further, glycol, diethylene glycol, and glycerin compounds present in the ink for inkjet printing have a certain volatility in the drying process, and thus the exhaust gas needs to be treated. The effect of the matched treatment equipment such as adsorption or filtration and adsorption in the current market is not ideal. Obviously, the 'powder shaking film transfer printing' equipment has a large reconstruction space.

Disclosure of Invention

In order to overcome the defects brought by the prior process equipment adopting the powder shaking film transfer printing, the utility model aims to provide an improved printer which can directly print glue ink and omit a powder shaking machine in a powder shaking film transfer printing device.

In order to achieve the purpose of the utility model, the technical scheme is as follows:

the printing device comprises a printing unit, a drying unit and an exhaust gas treatment unit and is characterized in that a medium output port of the printing unit is connected with a bottom plate heating device, and the drying unit is fixed on the bottom plate heating device. The drying unit is composed of an area a drying device and an area b drying device, the area a drying device and the area b drying device are connected to form a slope through an included angle, and an exhaust gas collecting unit is connected between the area a drying device and the area b drying device through a pipeline and is connected with an exhaust gas treatment unit through a pipeline. The tail end of the drying device in the zone b is connected with an air cooling device.

The printing unit includes an inkjet printer and a media transport device.

The spray heads of the ink-jet printer are improved, and three groups of spray heads of color ink, white ink and spray printing glue are sequentially arranged.

The spray printing glue is thermosensitive glue or pressure-sensitive adhesive spray printing ink.

The printing device is used by spraying color ink on a release medium, spraying white ink, and finally printing spraying glue; and after the printing product is dried, the finished product is applied to a pressure-sensitive or heat-sensitive transfer printing method to finish transfer printing on other media.

The utility model has the advantages that: the printing system can realize digital online glue spraying and printing construction, overcomes the defects of the traditional powder shaking printer, can perform heat transfer or pressure-sensitive printing on various plates of pure cotton fabric, polyester fabric, blended fabric, leather, plastic and metal according to requirements, has bright images, high fastness and sharp image edges after transfer, and is simple in process, environment-friendly and free of noise and smoke pollution.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a printing device according to the present utility model, wherein a 1-medium conveying device, a 2-printing unit, a 3-printing medium output port, a 4-base plate heating device, a 5-drying unit, a 6-drying a area, a 7-waste gas collecting unit, an 8-drying b area, a 9' -air cooling device, a 10-medium winding device, an 11-waste gas purifying treatment unit, and a 12-bracket are provided.

FIG. 2 shows the internal nozzle arrangement of the printing unit, a 21-color ink printhead, a 22-white ink printhead, and a 23-jet glue printhead according to the present utility model.

Fig. 3 shows an arrangement of the printing unit internal light management MH5320 spray heads, 31-2 sets of four color ink printheads, 32-2 sets of white ink printheads, and 33-2 sets of inkjet glue printheads according to embodiment 2 of the present utility model.

Detailed Description

For better explaining the technical scheme of the utility model, the following are exemplified by the following examples in connection with the accompanying drawings: example 1

The printing device comprises a printing unit 2, a drying unit 5 and an exhaust gas purification treatment unit 11 and is characterized in that a medium output port 3 of the printing unit is connected with a bottom plate heating device 4, and the drying unit 5 is fixed on the bottom plate heating device 4. The drying unit 5 consists of an area a drying device 6 and an area b drying device 8; the a-area drying device 6 and the b-area drying device 8 are connected at an included angle to form a slope, and an exhaust gas collecting device 7 is connected between the a-area drying device 6 and the b-area drying device 8 through a pipeline, and the exhaust gas collecting device 7 is connected with an exhaust gas purifying treatment unit 11 through a pipeline. The tail end of the b-zone drying device 8 is connected with an air cooling device 9.

The units and the devices are arranged on a bracket 12, and a medium winding device 10 is arranged on the bracket 12 and is used for winding the printed medium material.

The printing unit 2 includes an inkjet printer and a medium conveying device 1.

The ink-jet printer adopts an EP i3200 nozzle printer, the nozzle of the ink-jet printer is improved, and three groups of nozzles of color ink, white ink and jet printing glue are sequentially arranged.

The improved ink-jet printer is connected with a medium conveying device, and then matched with drying equipment and waste gas treatment equipment, so that a novel pigment-type ink shake-free printing device is formed. The drying equipment can be selected from the prior patent (ZL 2021 2307 8331.1) issued by the applicant.

EP i3200 spray head features (see fig. 2): the size of the spray head; 69.1x 59.4x35.6mm width x depth x height; a total of 3200 nozzles in 8 rows; the distance between the nozzles is 1/300inch; up to 4 color ink printing can be supported; resolution 600dpi; the effective print width is 33.8mm. The computer software can realize the independent control of each spray hole, and ensures the ink application according to the specified quantity and position. The nozzle 1 in fig. 2 prints four inks of red, yellow, blue and black; the nozzle 2 in fig. 2 prints only white ink (the number of prints can be controlled, for example, only two rows of spray holes are required to jet ink, and the rest does not jet ink); the nozzle 3 in fig. 2 only prints the spray glue (the printing amount can be controlled).

The bottom plate heating device adopts intelligent temperature control, the temperature change range is below 80 ℃, and the temperature is adjustable; the temperature of hot air of the drying unit is below 150 ℃ and is adjustable. The waste gas treatment device can meet the waste gas treatment of the waste gas temperature below 90 ℃.

Example 2

Other embodiments, the ink jet printer is a finishing MH5320 nozzle printer. MH5320 showerhead features (see fig. 3): size of the spray head: 89x 24.51x 66.3mm;1280 nozzles; the resolution was 600dpi. In the figure, the nozzle group 1 and the nozzle group 2 print four inks of red, yellow, blue and black; the group 2 spray heads only print white ink (the printing quantity can be controlled, and the single spray head can be independently controlled to discharge ink); the group 3 and group 2 spray heads only print the spray printing glue (the printing quantity can be controlled). The drying and gas purging were the same as in example 1.

Application example 1

Printing medium enters the ink-jet printer through the medium conveying device; ink enters the nozzle through the ink supply. Under the control of a computer program, printing required color ink on the designated positions of the medium according to the specified quantity by the color ink nozzle to form required patterns; then printing a layer of white ink by a white ink nozzle; finally, printing a layer of spray printing glue by a spray printing glue nozzle.

After printing is finished, the printing medium is heated and evaporated to a small amount of water simply by a bottom plate heating device; drying by a dryer in the area a; drying is then continued by the b-zone dryer. After the drying is finished, the rolling device finishes rolling by cooling with cold air. When the rolled product is removed, the printing medium can enter a thermal transfer printing or pressure sensitive transfer printing process.

In the printing process, the waste gas collecting unit collects the dry waste gas and sends the dry waste gas to the waste gas purifying treatment unit for treatment.

The printing medium is PET film with release layer or release transfer paper.

Since there are many different manufacturers and different types of spray heads on the market, this application is not a list, but similar modifications are included in the claims of this application.

Claims (1)

1. A digital online glue printing device comprises a printing unit, a drying unit and an exhaust gas treatment unit and is characterized in that a medium output port of the printing unit is connected with a bottom plate heating device, and the drying unit is fixed on the bottom plate heating device; the drying unit consists of an area a drying device and an area b drying device which are connected to form a slope in an included angle, and an exhaust gas collecting unit is connected between the area a drying device and the area b drying device through a pipeline and is connected with an exhaust gas treatment unit through a pipeline; the tail end of the drying device in the zone b is connected with an air cooling device;

the printing unit comprises an inkjet printer and a medium conveying device; and the spray heads of the ink-jet printer adopt three groups of spray heads of color ink, white ink and jet printing glue to be sequentially arranged.