CN108909187A - A kind of printer negative-pressure adsorption mechanism - Google Patents

Abstract

A negative pressure vapor adsorption mechanism for a printer, installed on a printer, for absorbing inkjet vapor, the adsorption mechanism is a tubular hollow structure, provided with an adsorption channel and an adsorption part, and one end of the adsorption channel is provided with a negative pressure adsorption device The interface of the adsorption part is distributed on the lower side of the adsorption mechanism, the middle part of the adsorption part is concave, and a plurality of adsorption holes are distributed on the surface. The present invention can save the installation space to the greatest extent by arranging the tubular hollow adsorption mechanism between the nozzle trays, reduce the overall volume of the inkjet printing support, make the movement of the inkjet printing support more convenient, and make the printing more stable. In addition, through the setting of the concave adsorption part, it is possible to increase the adsorption area and at the same time make the adsorption space larger and improve the adsorption efficiency. Moreover, by providing a plurality of adsorption holes in the adsorption part, it is possible to achieve full coverage of adsorption for multiple nozzles, so that the adsorption effect is better. And the setting of the adsorption hole has better adsorption force because the adsorption hole is smaller.

Description

A printer negative pressure adsorption mechanism

technical field

The invention belongs to the field of printing equipment, and in particular relates to a negative pressure adsorption mechanism of a printer.

Background technique

Inkjet printing technology first appeared in the 1960s. With the gradual maturity of the technology in the mid-1980s, the first commercial inkjet printer was officially born. It sprayed ink onto the surface of various media through the nozzles on the print head to achieve Non-contact, high-speed, low-noise monochrome and color text and image printing. On the basis of inkjet printing technology, the special powder is prepared into ink, controlled by computer, and the configured ink can be directly printed on the surface of ceramics for surface modification or decoration by using a special printer.

At present, the application field is mainly to print on large-sized media such as ceramic tiles, wood boards, glass, corrugated paper, and gussets. By inkjet, various colors of ink are sprayed on the printing medium and then further processed to obtain the expected pattern. During the printing process, the ink penetrates into the interior of the printing medium through corrosion, so that the pattern obtained by inkjet printing is not easy to fade, and has the characteristics of waterproof, anti-ultraviolet, and anti-scratch.

The nozzle of the ink cartridge is the core part of the printer. The inkjet of the printer is to spray the ink onto the printing medium through the nozzle. The price is expensive, so it is particularly important to protect the nozzle. Existing printers generally use nozzle trays to support and fix the nozzles. In this way, when assembling the printer, other parts of the printer can be assembled before installing the nozzles, so as to avoid accidental damage to the nozzles during the assembly process and reduce losses.

Inkjet printing has certain requirements on the printing temperature. For ceramic ink, if the temperature is too high, the suspended particles will be degraded, and if the temperature is too low, the suspended particles will be precipitated; ; For solvent-based inks, too low temperature will also affect the ink drying time and thus affect the printing effect. In order to speed up the drying speed and prevent the ink from smearing on the printing medium, the conveying platform will also preheat the printing medium. Therefore, there is usually a high temperature in the printing area, so the inkjet will evaporate to a certain extent. Once the gaseous water molecules with high temperature hit the cold nozzle tray, they will quickly condense into water droplets, and most of these water molecules It is evaporated from the ink, more or less mixed with minerals in the ink, once these water droplets flow into the micropores on the nozzle or mix with the ink ejected from the nozzle, it will pollute the ink and affect the printing effect; in addition, If the steam mixed with minerals spreads further, it will also pollute the surrounding air, and in the long run, it will also have a certain impact on the health of the operator.

Contents of the invention

The object of the present invention is to provide a negative pressure adsorption mechanism for a printer, which can improve the printing stability and reduce the pollution caused during the inkjet process.

In order to solve the above technical problems, the present invention provides a printer negative pressure steam adsorption mechanism, which is installed on the printer and used to absorb inkjet steam. One end of the channel is provided with an interface connected to a negative pressure adsorption device. The adsorption part is distributed on the lower side of the adsorption mechanism. The middle part of the adsorption part is concave, and a plurality of adsorption holes are distributed on the surface.

The printer of the present invention is mainly aimed at industrial printers, and can be used for printing on ceramic tiles, wood boards, glass, corrugated, PCB, textiles, metal plates and other media. The printer is provided with an inkjet bracket, and the inkjet bracket is provided with a plurality of square-hole nozzle trays, and the nozzles are detachably installed on the nozzle trays, which can realize regular cleaning. The nozzle trays are arranged in multiple rows and arranged on the bottom of the inkjet bracket, wherein the adsorption mechanism is also arranged on the bottom of the inkjet bracket, and one row, two rows or multiple rows of nozzle trays can be used as a group, and a set of nozzle trays is arranged between each group of nozzle trays. In order to save the space of the whole inkjet bracket and make the structure of the inkjet bracket more compact, the present invention sets the adsorption mechanism as a tubular hollow structure. On the one hand, the hollow structure has enough space to absorb the steam of inkjet. The aspect is long and tubular, enabling it to fit in tight spaces between groups of printhead trays.

One end of the adsorption channel is provided with an interface connected to a negative pressure adsorption device. The interface is in the shape of a circular tube. By connecting a negative pressure adsorption device, such as a vacuum adsorption fan, a vacuum negative pressure adsorption fan or a vacuum pump, etc., using the principle of air extraction, Realize the adsorption of inkjet vapor or inkjet mist.

When inkjet, due to the high temperature on the printing medium, the ink will evaporate a small amount on the printing medium, or there will be a small amount of ink mist during the inkjet process, so before inkjet needs to be performed, the adsorption channel The interface is connected to the negative pressure adsorption device, and the negative pressure adsorption device is activated, so that the adsorption mechanism is always in a negative pressure state, which can absorb ink vapor and inkjet mist in time, and can reduce the damage caused by air pollution to the operator.

The adsorption mechanism is a tubular hollow structure, wherein the adsorption channel is a hollow tubular part, wherein the tubular shape can be round or square, and can be selectively set according to the spatial position. The diameter of the adsorption channel can also be limited according to the installation location. The adsorption part is distributed on the lower side of the adsorption mechanism. Since the inkjet direction is also downward spraying, the adsorption part is also arranged downward. The adsorption part is arranged on the lower side of the adsorption mechanism, and the middle part is concave. The concave can increase the adsorption area, so that more adsorption holes can be set on it, which improves the efficiency of steam adsorption, and by properly setting the adsorption holes in the adsorption part, the adsorption airflow can be made more regular and the turbulence of the airflow can be avoided.

Therefore, by providing a tubular hollow adsorption mechanism between the nozzle trays, the present invention can save installation space to the greatest extent, reduce the overall volume of the inkjet printing bracket, make the inkjet printing bracket move more conveniently, and make printing more stable. In addition, through the setting of the concave adsorption part, it is possible to increase the adsorption area and at the same time make the adsorption space larger and improve the adsorption efficiency. Moreover, by providing a plurality of adsorption holes in the adsorption part, it is possible to achieve full coverage of adsorption for multiple nozzles, so that the adsorption effect is better. Moreover, the setting of the adsorption hole, because the adsorption hole is smaller, has better adsorption force, and can effectively prevent the adsorbed steam or inkjet mist from forming ink droplets and leaking out after adsorption.

Further, the middle part of the adsorption part is concaved to form an inverted "V" shape.

In order to increase the adsorption area of the adsorption part, the cross section of the adsorption part presents an inverted "V" shape, which increases the adsorption area and the height of the adsorption hole, so that steam or mist can accumulate on the inner surface of the adsorption mechanism , to form a liquid, and then discharged. It reduces the influence of the negative pressure adsorption device on the working efficiency of the negative pressure adsorption device when the vapor is directly inhaled into the device.

And the inverted "V"-shaped design can also increase the adsorption area. According to the principle that the sum of the two sides of the triangle is greater than the third side, through the inverted "V"-shaped design, more adsorption holes can be set on both sides to achieve Full adsorption.

Therefore, in the present invention, the adsorption part is designed in an inverted "V" shape, on the one hand, the distance between the adsorption hole and the steam can be extended, so that the steam can be mainly concentrated on the inner side of the adsorption mechanism to condense to form ink droplets; on the other hand, it can also To increase the adsorption area, multiple adsorption holes can be set on both sides of the adsorption part. According to the movement of the airflow, a more reasonable setting can be realized, so that the corresponding inkjet positions of the nozzles have corresponding adsorption holes to achieve correspondence and achieve better adsorption.

Further, the angle formed by the inverted "V" shape formed by the adsorption part and the side wall of the adsorption channel is 40-60°.

The two sides of the inverted "V" shape formed by the indentation of the adsorption part form a certain angle with the side wall of the adsorption channel, so that two grooves are formed on both sides of the adsorption channel. When the adsorbed vapor condenses into droplets on the inner wall of the adsorption channel, due to the effect of gravity, the droplets will flow into the groove along the side wall of the adsorption channel. Therefore, devices for collecting condensed droplets can be installed at both ends, which can Take it out directly, or let it flow out naturally, catch it with a container below, and clean it regularly.

Among them, the angle formed by the inverted "V" shape and the side wall of the adsorption channel has certain requirements. If the angle is too large, the smoother the inverted "V" shape, making it difficult for the droplets adsorbed on the inner wall to converge downwards to the groove in time. If the angle is too small, the inverted "V" shape will be steeper, which can accelerate the convergence of droplets, but it will reduce the space of the adsorption channel and affect the print quality. Adsorption effect, therefore, preferably, the angle formed by the inverted "V" shape formed by the adsorption part and the side wall of the adsorption channel is 40-60°. The liquid droplets condensed on the inner wall of the adsorption part can quickly gather into the groove, and at the same time, it can ensure that the adsorption channel has enough space for adsorption.

Further, the adsorption holes are distributed on both sides of the inverted "V"-shaped adsorption part.

In order to make the adsorption effect more uniform, the plurality of adsorption holes are evenly spaced and distributed on two sides of the adsorption part. Since the steam or mist tends to diffuse after the ink is sprayed on the printing medium, the area of the adsorption area is increased by setting the adsorption holes on the two sides respectively.

In addition, the adsorption holes are distributed on two sides, so that the air flow can be split on both sides, and the multiple adsorption holes can be set at a short distance, so that the area printed by each nozzle can correspond to multiple adsorption holes, and the settings on both sides On the one hand, it can reduce the diffusion of steam to achieve more sufficient adsorption; on the other hand, it can split the steam to avoid the turbulence of the air flow and improve the adsorption efficiency.

Further, it also includes a plurality of guide grooves for catching the vapor condensed to form ink droplets, and the guide grooves are arranged at the lower ends of both sides of the inverted "V"-shaped adsorption part.

When the adsorption mechanism absorbs steam, a part of the steam will directly enter the adsorption channel, condense on the inner wall of the adsorption channel to form liquid droplets, and flow into the groove, and the other part may condense on the outer surface of the adsorption part. A small amount of ink vapor condenses, due to the liquid The existence of surface tension can prevent the droplets from converging,

However, when a certain amount of condensed liquid is accumulated, due to the effect of gravity, the ink droplets will gradually slide down, and may drop onto the printing medium to affect the printing quality. Downward sloping so that condensed ink droplets can flow down the sidewalls into the channel for ink droplet collection. Therefore, by providing guide grooves at the lower ends of both sides of the inverted "V"-shaped adsorption part, the converged ink droplets can be caught and unified treatment can be realized.

Further, the two ends of the guide groove are provided with openings for ink droplets to flow out.

In order to facilitate the flow of ink droplets, openings are provided at both ends of the guide groove. When there is a lot of ink in the guide groove, a container for collecting ink droplets can be arranged at the lower end of the opening, and the ink droplets can flow out along the guide groove.

The setting of the position of the opening needs to ensure that the condensed liquid verification guide groove flows to the opening, and after flowing out from the opening, it can ensure that the flowing ink will not pollute the printing medium.

Therefore, on the one hand, by setting the opening, the ink can flow out smoothly along the opening of the guide groove, and it is only necessary to regularly clean the container for collecting the ink; The condensed ink will also flow out along the groove to both ends when it gathers a certain amount, and the design of the opening also enables the ink collected in the groove to flow into the container set at the lower end of the opening to realize unified collection and make the operation It is more convenient, improves printing efficiency and saves labor costs.

Further, the guide groove is fixedly connected with the adsorption mechanism.

The guide groove can be made of metal, and can be fixed on the adsorption mechanism by screws to realize the overall adsorption and guiding function.

Further, the lowest position of the interface is lower than the lowest position of the adsorption hole.

The interface is connected to a negative pressure adsorption device. When the ink mist forms liquid droplets due to condensation in the adsorption channel, or even a large number of liquid droplets gather to form a liquid flow, because the position of the interface is lower, the liquid flow will mainly flow in the direction of the interface. , and due to the adsorption of the negative pressure mechanism, the liquid droplets are sucked out without flowing out from the adsorption hole, which avoids the ink droplets from dripping onto the printing medium and affecting the printing quality.

Further, the printer is provided with a belt for transporting printing media, and the length of the guide groove is greater than the width of the belt.

On large-scale industrial printers, the weight of the printing medium is generally heavy, and it is difficult to move by manpower. Generally, the belt is used for transmission, and the printing is realized during the transmission process, which makes the production efficiency higher. The purpose of setting the guide groove is to prevent the ink vapor or mist condensed on the outer surface of the adsorption mechanism from converging to form ink droplets, dripping onto the printing medium or the conveying belt, and contaminating the printing medium. Therefore, in order to prevent the ink vapor condensed on the adsorption mechanism from contaminating the printing medium, the length of the guide groove is greater than the width of the belt, so that the ink vapor or mist condensed on the outer surface of the adsorption mechanism above the printing medium gathers to form ink The drops can all be collected into the guide groove, which reduces the possibility of printing medium contamination and improves the stability of printing.

Further, the printer is provided with multiple sets of printhead assemblies, and the adsorption mechanism is arranged between each set of printhead assemblies.

The nozzle assembly is arranged on the lower side of the inkjet bracket. The nozzle assembly includes a nozzle tray and a nozzle, wherein the nozzle is installed on the nozzle tray, and the nozzle tray of the printer is arranged in a row in a straight line, wherein a group of nozzle assemblies can be one or two columns , in order to make the overall structure more compact, generally two rows of nozzle assemblies can be set as a group, and the space between each group can be equipped with an adsorption mechanism, and each adsorption mechanism corresponds to two rows of adsorption holes, so that the ink vapor can be fully absorbed. adsorption.

In addition to being arranged between each group of nozzle assemblies, the adsorption mechanism can also be arranged before entering the nozzle assembly and after exiting the nozzle assembly, that is, one can be arranged on both sides of the inkjet support and adjacent to the position of the nozzle assembly, so as to ensure Fuller absorption effect.

Further, the distance between the adsorption holes is 15-25 mm.

In order to realize sufficient absorption of ink vapor, preferably, the distance between the adsorption holes is 15-25 mm. Each nozzle can correspond to at least ten adsorption holes, which ensures the complete absorption of steam and reduces air pollution.

Beneficial effects of the present invention:

(1) The present invention can save the installation space to the greatest extent and reduce the overall volume of the inkjet printing bracket by arranging a tubular hollow adsorption mechanism between the nozzle trays, making the inkjet printing bracket move more conveniently and printing more stable. In addition, through the setting of the concave adsorption part, it is possible to increase the adsorption area and at the same time make the adsorption space larger and improve the adsorption efficiency. Moreover, by providing a plurality of adsorption holes in the adsorption part, it is possible to achieve full coverage of adsorption for multiple nozzles, so that the adsorption effect is better. Moreover, the setting of the adsorption hole, because the adsorption hole is smaller, has better adsorption force, and can effectively prevent the adsorbed steam or inkjet mist from forming ink droplets and leaking out after adsorption.

(2) In the present invention, the adsorption part is designed in an inverted "V" shape. On the one hand, the distance between the adsorption hole and the steam can be extended, so that the steam can be mainly concentrated on the inner side of the adsorption mechanism to condense to form ink droplets. On the other hand, it can also The adsorption area can be increased, and multiple adsorption holes can be set on both sides of the adsorption part. According to the movement of the airflow, a more reasonable setting can be realized, so that the corresponding inkjet positions of the nozzles have corresponding adsorption holes to achieve better adsorption.

(3) By setting the opening, on the one hand, the ink can flow out smoothly along the opening of the guide groove, and only need to regularly clean the container for collecting ink; on the other hand, in the groove of the inverted "V"-shaped adsorption part, the same Condensed ink will gather, and when it gathers a certain amount, it will also flow out along the groove to both ends, and the design of the opening also enables the ink gathered in the groove to flow into the container set at the lower end of the opening to achieve unified collection, making The operation is more convenient, the printing efficiency is improved, and the labor cost is saved.

(4) The length of the guide groove is greater than the width of the belt. The ink droplets above the printing medium and condensed on the outer surface of the adsorption mechanism to form ink droplets can all be collected in the guide groove, reducing the possibility of printing medium contamination and improving printing stability.

Description of drawings

Fig. 1 is a perspective view of the adsorption mechanism of the present invention.

Fig. 2 is a perspective view of the spray painting bracket of the present invention.

Fig. 3 is a transverse sectional view of the adsorption mechanism of the present invention.

Fig. 4 is a front view of the adsorption mechanism of the present invention.

Fig. 5 is a transverse cross-sectional view of the adsorption mechanism of the present invention with guide grooves.

Fig. 6 is a perspective view of the adsorption mechanism of the present invention with guide grooves.

Fig. 7 is a schematic side view of the adsorption mechanism of the present invention.

Fig. 8 is another perspective view of the adsorption mechanism of the present invention with guide grooves.

Fig. 9 is a partially enlarged schematic diagram of the adsorption mechanism of the present invention.

Fig. 10 is another transverse cross-sectional view of the adsorption mechanism of the present invention with guide grooves.

Fig. 11 is another transverse cross-sectional view of the adsorption mechanism of the present invention with guide grooves.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, the present invention provides a printer negative pressure steam adsorption mechanism 1, which is installed on the printer and used to absorb ink mist, the ink mist is the mist formed by water vapor and ink, and the adsorption mechanism 1 is tubular The hollow structure is provided with an adsorption channel 11 and an adsorption part 12. One end of the adsorption channel 11 is provided with an interface 13 connected to a negative pressure adsorption device. The adsorption part 12 is distributed on the lower side of the adsorption mechanism 1, and the middle part of the adsorption part 12 is Concave, with multiple adsorption holes 14 distributed on the surface.

The printer of the present invention is mainly aimed at industrial printers, and can be used for printing on ceramic tiles, wood boards, glass, corrugated, PCB, textiles, metal plates and other media. As shown in FIG. 2 , the printer is provided with an inkjet support 10 , and the inkjet support 10 is provided with a plurality of square-hole nozzle trays 20 , and the nozzles are detachably installed on the nozzle trays 20 , which can realize regular cleaning. In order to save the space of the entire inkjet bracket 10 and make the structure of the inkjet bracket 10 more compact, the present invention arranges the adsorption mechanism 1 in a tubular hollow structure. On the one hand, the hollow structure has enough space to absorb the steam of inkjet; The long tubular shape enables it to be installed in narrow spaces between groups of nozzle trays 20 .

As shown in Figures 1 to 2, one end of the adsorption channel 11 is provided with an interface 13 connected to a negative pressure adsorption device. Fans or vacuum pumps, etc., use the principle of air extraction to achieve the adsorption of inkjet steam or inkjet mist.

When inkjet, due to the high temperature on the printing medium, the ink will evaporate a small amount on the printing medium, or there will be a small amount of ink mist during the inkjet process, so before inkjet needs to be performed, the adsorption channel The interface 13 of 11 is connected to the negative pressure adsorption device, and the negative pressure adsorption device is activated, so that the adsorption mechanism 1 is always in a negative pressure state, which can absorb ink vapor and ink spray mist in time, prevent the blockage of the ink cartridge, and reduce air pollution to the operator. coming damage.

The adsorption mechanism 1 is a tubular hollow structure, wherein the adsorption channel 11 is a hollow tubular part, wherein the tubular shape can be round or square, and can be selectively set according to the spatial position. The diameter of the adsorption channel 11 can also be limited according to the installation location. The adsorption portion 12 is distributed on the lower side of the adsorption mechanism 1. Since the inkjet direction is also downward spraying, the adsorption portion 12 is also arranged downward. Concave, wherein the concave in the middle can increase the adsorption area, so that more adsorption holes 14 can be arranged on it, which improves the efficiency of vapor adsorption, and by reasonably setting the adsorption holes 14 in the adsorption part 12, the adsorption airflow can be made more regular. Air flow turbulence is avoided.

Therefore, by arranging the tubular hollow adsorption mechanism 1 between the nozzle trays 20 in the present invention, the installation space can be saved to the greatest extent, the overall volume of the inkjet support 10 can be reduced, the movement of the inkjet support 10 is more convenient, and the printing is more stable. In addition, through the arrangement of the recessed adsorption part 12, the adsorption area can be increased, and the adsorption space can be made larger, so as to improve the adsorption efficiency. Moreover, by arranging a plurality of adsorption holes 14 in the adsorption part 12 , it is possible to achieve full coverage of adsorption for multiple nozzles, so that the adsorption effect is better. Moreover, the setting of the adsorption hole 14 has a better adsorption force because the adsorption hole 14 is smaller, and can effectively prevent the adsorbed steam or inkjet mist from forming ink droplets and leaking out after adsorption.

Further, as shown in FIG. 3 , the middle part of the adsorption part 12 is concaved to form an inverted "V" shape.

In order to increase the adsorption area of the adsorption part 12, the cross-section of the adsorption part 12 presents an inverted "V" shape, which increases the area of adsorption and the height of the adsorption hole 14, so that steam or mist can accumulate in the adsorption area. Most of the inner surface of the mechanism 1 is in the form of gas, which is discharged through the exhaust channel, and a small part will flow out in the form of liquid. It reduces the influence of the negative pressure adsorption device on the working efficiency of the negative pressure adsorption device when the vapor is directly inhaled into the device.

And the inverted "V"-shaped design can also increase the adsorption area. According to the principle that the sum of the two sides of the triangle is greater than the third side, through the inverted "V"-shaped design, more adsorption holes 14 can be set on both sides. Achieve full adsorption.

Therefore, the present invention designs the adsorption part 12 into an inverted "V" shape. On the one hand, the distance between the adsorption hole 14 and the steam can be extended, so that the steam can be mainly concentrated on the inner side of the adsorption mechanism 1 to condense to form ink droplets. , can also increase the adsorption area, and a plurality of adsorption holes 14 can be set on both sides of the adsorption part 12. According to the movement of the air flow, a more reasonable setting can be realized, so that the corresponding inkjet positions of the nozzles have corresponding adsorption holes 14 to achieve correspondence. Better adsorption.

Further, as shown in FIG. 3 , the angle α formed between the inverted “V” shape formed by the adsorption portion 12 and the side wall of the adsorption channel 11 is 50°.

The two sides of the inverted "V" shape formed by the indentation of the adsorption part 12 form a certain angle α with the side wall of the adsorption channel 11 , so that two grooves 100 are formed on both sides of the adsorption channel 11 . When the adsorbed vapor condenses into droplets on the inner wall of the adsorption channel 11, due to the effect of gravity, the droplets will flow into the groove 100 along the sidewall of the adsorption channel 11, therefore, it is possible to set the two ends to collect the condensed droplets. The device can be pulled out directly, or it can be allowed to flow out naturally, and the container below is used to catch it, and it only needs to be cleaned regularly.

Among them, the angle formed by the inverted "V" shape and the side wall of the adsorption channel 11 has certain requirements. If the angle is too large, the smoother the inverted "V" shape, making it difficult for the droplets adsorbed on the inner wall to gather downwards in time. If the angle is too small, the inverted "V" shape will be steeper. Although it can accelerate the convergence of droplets, it will reduce the space of the adsorption channel 11. Therefore, preferably, the angle α formed between the inverted "V" shape formed by the adsorption part 12 and the side wall of the adsorption channel 11 is 50°. The liquid droplets condensed on the inner wall of the adsorption part 12 can quickly gather into the groove, and at the same time, it can ensure that the adsorption channel 11 has enough space for adsorption.

Further, as shown in FIG. 4 , the adsorption holes 14 are distributed on two sides of the inverted “V”-shaped adsorption portion 12 .

In order to make the adsorption effect more uniform, the plurality of adsorption holes 14 are evenly spaced on the two sides of the adsorption part 12. After the ink is sprayed on the printing medium, the ink mist tends to spread, so through the two sides respectively The adsorption holes 14 are provided to increase the area of the adsorption region.

In addition, the adsorption holes 14 are distributed on two sides, so that the air flow can realize the diversion on both sides, and the plurality of adsorption holes 14 can be set at a shorter distance, so that the area printed by each nozzle can correspond to a plurality of adsorption holes 14, and the two On the one hand, the setting of the side can reduce the diffusion of steam and achieve more sufficient adsorption; on the other hand, it can split the steam to avoid the turbulence of the air flow and improve the adsorption efficiency.

Further, as shown in FIGS. 5-6 , it also includes a plurality of guide grooves 15 for condensing steam to form ink droplets, and the guide grooves 15 are arranged at the lower ends of both sides of the inverted "V"-shaped adsorption part 12 .

When the adsorption mechanism 1 absorbs steam, a part of the steam will directly enter the adsorption channel 11, condense on the inner wall of the adsorption channel 11 to form liquid droplets, and flow into the groove, and the other part may condense on the outer surface of the adsorption part 12. A small amount of ink vapor Condensation, due to the existence of liquid surface tension, can avoid the convergence of droplets,

However, when a certain amount of condensed liquid is accumulated, due to the effect of gravity, the ink droplets will gradually slide down, and may drop onto the printing medium to affect the printing quality. It is inclined downward, so the condensed ink droplet can flow down into the guide groove 15 along the side wall, so as to realize the collection of the ink droplet. Therefore, by providing guide grooves 15 at the lower ends of both sides of the inverted "V"-shaped adsorption part 12, the converged ink droplets can be caught and unified treatment can be realized.

Further, as shown in FIG. 6 , openings 30 for ink droplets to flow out are provided at both ends of the guide groove 15 .

In order to facilitate the flow of ink droplets, the two ends of the guide groove 15 are provided with openings 30. When there are more ink collections in the guide groove 15, a container for collecting ink droplets can be arranged at the lower end of the opening 30, and the ink droplets can flow along the guide groove. 15 flow out.

The setting of the position of the opening 30 needs to ensure that the condensed liquid verification guide groove 15 flows to the opening 30, and after flowing out from the opening 30, it can ensure that the flowing ink will not pollute the printing medium.

Therefore, on the one hand, by setting the opening 30, the ink can flow out smoothly along the opening 30 of the guide groove 15, and only need to regularly clean up the container for collecting the ink; In the same way, the condensed ink will also gather, and when it gathers a certain amount, it will also flow out along the groove to both ends, and the design of the opening 30 also enables the ink gathered in the groove to flow into the container provided at the lower end of the opening 30, Realize unified collection, make operation more convenient, improve printing efficiency, and save labor costs.

Further, as shown in FIG. 6 , the guide groove 15 is fixedly connected with the adsorption mechanism 1 .

The guide groove 15 can be made of metal material, and can be fixed on the adsorption mechanism 1 by screws to realize the overall adsorption and guiding function.

Further, as shown in FIG. 7 , the lowest position of the interface 13 is lower than the lowest position of the adsorption hole 14 .

The interface 13 is connected to a negative pressure adsorption device. When the ink mist forms liquid droplets due to condensation in the adsorption channel, or even a large number of liquid droplets gather to form a liquid flow, because the position of the interface 13 is lower, the liquid flow will mainly flow to The direction of the interface 13, and due to the adsorption effect of the negative pressure mechanism, the liquid droplets are sucked out without flowing out from the adsorption hole 14, which prevents the ink droplets from dripping onto the printing medium and affecting the printing quality.

Further, the printer is provided with a belt (not marked in the figure) for transporting printing media, as shown in FIG. 8 , the length L of the guide groove 15 is greater than the width of the belt.

On large-scale industrial printers, the weight of the printing medium is generally heavy, and it is difficult to move by manpower. Generally, the belt is used for transmission, and the printing is realized through the belt transmission, which makes the production efficiency higher. The purpose of the guide groove 15 is to prevent the ink vapor or mist condensed on the outer surface of the adsorption mechanism 1 from forming ink droplets after condensation, dripping onto the printing medium or the conveying belt, thereby polluting the printing medium, affecting the printing quality and printing stability . Therefore, in order to prevent the ink vapor condensed on the adsorption mechanism 1 from contaminating the printing medium, the length of the guide groove 15 is greater than the width of the belt. The ink droplets formed after the ink vapor or mist condensed on the outer surface of the adsorption mechanism 1 above the printing medium can all be collected in the guide groove 15, reducing the possibility of printing medium contamination and improving printing stability.

Further, as shown in FIG. 1 , the printer is provided with multiple sets of print head assemblies, and the adsorption mechanism 1 is arranged between each set of print head assemblies.

The nozzle assembly is arranged on the bottom of the inkjet support 10, and the nozzle assembly includes a nozzle tray 20 and a nozzle, wherein the nozzle is installed on the nozzle tray 20, and the nozzle tray 20 of the printer is arranged in a row in a row, and one group of nozzle assemblies can be One row or two rows or multiple rows, in order to make the overall structure more compact, preferably, two rows of shower head assemblies can be set as a group, and the space between each group can be provided with an adsorption mechanism 1, and each adsorption mechanism 1 corresponds to two The adsorption holes 14 are arranged, so sufficient adsorption of ink vapor can be achieved.

In addition to being arranged between each group of nozzle assemblies, the adsorption mechanism 1, as shown in FIG. Adjacent nozzle assemblies are arranged to ensure a more adequate absorption effect.

Further, as shown in FIG. 9 , the distance N between the adsorption holes 14 is 20mm.

In order to realize sufficient absorption of ink vapor, preferably, the distance between the adsorption holes 14 is 20mm. Each nozzle can at least correspond to more than ten adsorption holes 14, which ensures complete absorption of steam and reduces air pollution.

Example 2

As shown in FIG. 10 , the difference between this embodiment and Embodiment 1 is that the angle α formed by the inverted “V” shape formed by the adsorption portion 12 and the side wall of the adsorption channel 11 is 40°.

Example 3

As shown in FIG. 11 , the difference between this embodiment and Embodiment 1 is that the angle α formed by the inverted “V” shape formed by the adsorption portion 12 and the side wall of the adsorption channel 11 is 60°.

Example 4

The difference between this embodiment and Embodiment 1 is that the distance N between the adsorption holes 14 is 15 mm.

Example 5

The difference between this embodiment and Embodiment 1 is that the distance N between the adsorption holes 14 is 25 mm.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced All should not deviate from the spirit and scope of the technical solution of the present invention. Those skilled in the art can also make other changes within the spirit of the present invention to be used in the design of the present invention, as long as it does not deviate from the technical effect of the present invention. These changes made according to the spirit of the present invention should be included within the scope of the present invention.

Claims (10)

1. A negative pressure vapor adsorption mechanism for a printer, installed on a printer, for absorbing inkjet vapor, the adsorption mechanism is a tubular hollow structure, provided with an adsorption channel and an adsorption part, and one end of the adsorption channel is provided with a connection negative pressure The interface of the adsorption device, the adsorption part is distributed on the lower side of the adsorption mechanism, and it is characterized in that the middle part of the adsorption part is concave, and a plurality of adsorption holes are distributed on the surface. 2. The adsorption mechanism according to claim 1, wherein the middle part of the adsorption part is concaved to form an inverted "V" shape. 3. The adsorption mechanism according to claim 2, wherein the angle formed by the inverted "V" shape formed by the adsorption part and the side wall of the adsorption channel is 40-60°. 4. The adsorption mechanism according to claim 2, wherein the adsorption holes are distributed on two sides of the inverted "V"-shaped adsorption part. 5. The adsorption mechanism according to any one of claims 2, characterized in that it further comprises a plurality of guide grooves for condensing steam to form ink droplets, the guide grooves are arranged on the inverted "V"-shaped adsorption part lower ends of both sides. 6 . The adsorption mechanism according to claim 5 , wherein openings for ink droplets to flow out are provided at both ends of the guide groove, and the guide groove is fixedly connected with the adsorption mechanism. 7 . 7. The adsorption mechanism according to claim 1, wherein the lowest position of the interface is lower than the lowest position of the adsorption hole. 8. The adsorption mechanism according to any one of claims 5-7, wherein the printer is provided with a belt for transmitting printing media, and the length of the guide groove is greater than the width of the belt. 9. The adsorption mechanism according to any one of claims 1-7, wherein the printer is provided with multiple sets of nozzle assemblies, and the adsorption mechanism is arranged between each group of nozzle assemblies. 10. The adsorption mechanism according to any one of claims 1-7, characterized in that, the distance between the adsorption holes is 15-25 mm.