CN112895729B - Spray printing machine set for color spray printing - Google Patents

Abstract

The invention relates to the technical field related to printing equipment, in particular to a spray printing unit for color spray printing, wherein a substrate transition roller set is arranged in a sealed shell, a spray printing assembly and a first curing lamp set are installed on a spray printing support one by one, a nitrogen air knife structure is arranged at the substrate feeding end of the sealed shell, a second curing lamp set structure is arranged at the substrate feeding end of the sealed shell, a nitrogen supply interface and a nitrogen air knife structure at one side of the sealed shell are connected to a nitrogen storage barrel, and a displacement driving motor drives a spray printing displacement support to displace to a scraping ink groove position through a conveying belt. This application is through having installed sealed shell additional on mechanical equipment and come whole spray printing parcel to seal shell in filling a large amount of nitrogen gas, carry out color spray printing in sealed shell inside, and sealed shell's feed port has set up the air-out guide, and the air exhauster blows out nitrogen gas in the nitrogen gas storage barrel from the air-out guide, avoids external oxygen to get into the color spray station inside, makes its printing ink reaction more accelerate to improve color spray printing's quality and efficiency.

Description

Color inkjet printing printing unit

Technical field

The present invention relates to the technical field related to printing equipment, and in particular to a printing unit for color inkjet printing.

Background technique

With the continuous development of domestic packaging materials, the variety, quality and quantity of packaging products are increasing day by day, and the printing speed and printing accuracy requirements for color inkjet printing machines are also getting higher and higher. Color inkjet printing press is an important member of the printing family. It occupies an important position in the packaging field with its exquisite printing quality. This kind of printing press generally consists of unwinding, unwinding traction, printing, rewinding traction and rewinding. In order to ensure a good printing effect, the printed pattern needs to be cured and a high-frequency and efficient curing lamp is used to illuminate the pattern. However, the high-power curing lamp needs to overcome problems such as heat generation and operational stability, and in a nitrogen environment This can effectively improve the printing quality.

The applicant has seen the shortcomings of the above-mentioned conventional inkjet printing units, adheres to the spirit of research, innovation and excellence, combined with production practice, and used professional and scientific methods to propose a practical solution, so he filed this application.

Contents of the invention

The object of the present invention is to provide a printing unit for color inkjet printing based on the existing technical status.

The printing unit for color inkjet printing includes: printing component, first curing lamp group, substrate transition roller group, sealed shell, nitrogen air knife structure, printing displacement bracket, second curing lamp group structure and displacement drive motor. The top of the sealed shell is equipped with a printing bracket, the base material transition roller group is set inside the sealing shell, the printing assembly and the first curing lamp group are installed on the printing bracket one by one, and the base material inlet end of the sealing shell is equipped with a nitrogen gas Air knife structure, the base material discharge end of the sealed housing is equipped with a second curing lamp group structure, the nitrogen supply interface and the nitrogen air knife structure on one side of the sealed housing are connected to the nitrogen gas storage barrel, and the top shell of the sealed housing is installed on the inkjet printer On the displacement bracket, the displacement drive motor drives the printing displacement bracket to the squeegee slot through the conveyor belt.

Specifically, the displacement drive motor drives the conveyor belt to operate by driving the rotating shaft. Both ends of the printing displacement bracket are installed on the conveyor belt through limit slide blocks. The bottom of the limit slide block is installed on the limit slide bar and along the limit slide bar. The limit slide bar moves linearly, and the scraping groove is arranged on one side of the printing station. The scraping grooves are equipped with scraping parts, and the scraping parts correspond to the printing components one by one.

Specifically, the squeegee slots are arranged in an arc to form a squeegee group. The squeegee slots are located below the printing displacement bracket. The entire squeegee set is equipped with squeegee lifting assemblies at both front and rear ends. The above-mentioned ink tank lifting assembly is mainly composed of a lifting motor and a lifting driving shaft. The lifting motor drives the lifting driving shaft to rotate and drives the scraping tank group to move up and down through the lifting driving shaft. The front and rear ends of the scraping tank group are equipped with lifts. The limit slider moves up and down along the lifting limit slider, and the two limit sliders are respectively arranged on the left and right sides of the lifting drive shaft.

Specifically, the nitrogen air knife structure mainly consists of an air outlet guide, a nitrogen air inlet pipe and an air knife bracket. One end of the nitrogen air inlet pipe is connected to one side of the air outlet guide, and the other end of the nitrogen air inlet pipe is connected to the nitrogen storage. Air barrel, the air outlet guide is installed on the inside of the fixed plates on both sides of the color inkjet printing equipment through the air knife bracket. There is an air outlet limit plate in front of the air outlet guide, and there is a printing base between the upper and lower air outlet limit plates. The exhaust gap through which the material passes.

Specifically, one side of the air outlet guide is provided with an air inlet end, and the air inlet end is connected to the nitrogen gas storage barrel. The front end of the air outlet guide is provided with an air guide plate, and the front ends of the two air guide plates gather toward the middle to form a line. An air outlet for nitrogen to blow out. The air outlet of the air outlet guide is aligned with the exhaust gap. The two air outlet guides are symmetrically arranged and located on the upper and lower sides of the printing substrate. There is a limit plate between the two air outlets. There are support pillars located at the left and right ends of the exhaust gap. The two ends of the air outlet limit plate are fixed on the inside of the fixed plates on both sides of the color inkjet printing equipment. The front and rear ends of the air outlet guide are provided with useful Transition roller for transporting substrate.

Specifically, the second curing lamp group structure is arranged and placed inside the mechanical equipment, the condensate flow seat is installed inside the lamp group installation shell, the LED curing lamp group is arranged on the condensate flow seat, and the sliding door leaf is installed on the lamp group. The front end of the installation shell is installed, and the lamp group installation shell is installed inside the mechanical equipment.

Specifically, L-shaped slide bars are provided on both sides of the lamp unit installation shell. The lamp unit installation groove is fixed inside the mechanical equipment. The L-shaped slide bar is embedded in the lamp group installation groove and moves forward and backward along the lamp group installation groove. , the condensate flow seat is divided into an upper double reflux pipe and a lower double reflux pipe. The upper double reflux pipe and the lower double reflux pipe are connected to each other through the end ports. The front end of the lower double reflux pipe is provided with a device for connecting the condensate. The pipe joint, a heat dissipation cavity for heat dissipation is provided between the bottom of the condensate flow seat and the lamp group installation shell, and the LED curing lamp group is mainly covered by the curing lamp group, the lamp group carrier plate and the lamp group It consists of a fixed plate. The curing lamp group is installed on the lamp group carrier plate. The lamp group carrier plate and the condensate flow seat are in contact with each other and installed on the upper end of the condensate flow seat. The lamp group covering fixed plate covers the upper end surface of the lamp group installation shell, so The above-mentioned lamp unit covering fixed plate is provided with a strip-shaped light-transmitting opening, and the light-transmitting opening is covered by a light-transmitting plate.

Specifically, the sealed shell is installed inside the wall panels on both sides of the mechanical equipment. The sealed shell and the wall panels on both sides form a nitrogen spray paint cavity. The two ends of the nitrogen spray paint cavity are respectively the base material feeding end and the base material. At the discharge end, the base material transition roller group is distributed in an arc shape inside the sealed shell and is located below the printing assembly. The nitrogen supply interface penetrates the inside of the sealed shell, and several nitrogen supply interfaces are distributed in an arc shape on the wall plate of the mechanical equipment. On the outside, the top of the sealed housing is provided with a printing plate holder, and the printing plate of the printing assembly is installed on the printing plate holder.

The beneficial effects of the present invention are:

1. This application uses a displacement drive motor to drive the displacement of the entire printing displacement bracket. The printing assembly and the first curing lamp group on the printing displacement bracket are simultaneously displaced to one side and above the squeegee group. During the process, the squeegee on the squeegee set is used to scrape the printing nozzle and printing plate to prevent ink from adhering to the equipment for a long time and causing the printed pattern to be blurred. This ensures the printing quality of the equipment and facilitates maintenance by staff. Equipment, extremely convenient and fast;

2. In this application, a sealed shell is installed on the mechanical equipment to wrap the entire printing process, a large amount of nitrogen is filled into the sealed shell, and color printing is performed inside the sealed shell, and the feed port of the sealed shell is provided with an outlet. The air guide and the exhaust fan blow out the nitrogen in the nitrogen storage barrel from the air outlet guide to prevent external oxygen from entering the interior of the color printing station, making the ink react faster and keeping the printing process in a high-concentration nitrogen environment. to improve the quality and efficiency of color inkjet printing;

3. This equipment uses an LED curing lamp set to irradiate and cure the pattern of the printing substrate. Since irradiation curing requires high-intensity light irradiation, the upper double reflux pipe and the lower double reflux pipe of the condensate flow seat are used to cure the LED curing lamp. The group is cooled down to control the temperature of the curing lamp unit structure to avoid excessive temperature after long-term operation and keep the equipment able to operate efficiently for a long time; the L-shaped sliders on both sides of the lamp unit installation shell cooperate with the lamp group installation slot to realize the curing lamp The group structure is quick to install, which facilitates maintenance and replacement of this application;

4. In this application, an air outlet guide is installed on the mechanical equipment. The air outlet guide is located at the base material inlet of the color spray station. The exhaust fan blows the nitrogen in the nitrogen storage barrel out of the air outlet guide. , to prevent external oxygen from entering the interior of the color inkjet printing station, and to keep the printing process in a high-concentration nitrogen environment, thereby improving the quality and efficiency of color inkjet printing.

Description of drawings

Figure 1 is a perspective view of the present invention;

Figure 2 is a cross-sectional view of the present invention;

Figure 3 is a top view of the present invention;

Figure 4 is a schematic structural diagram of the nitrogen air knife structure of the present invention;

Figure 5 is a perspective view of the structure of the second curing lamp set of the present invention;

Figure 6 is a cross-sectional view of the structure of the second curing lamp group of the present invention.

Note: Printing component 1, first curing lamp group 2, substrate transition roller group 3, sealed shell 4, nitrogen air knife structure 5, printing displacement bracket 6, second curing lamp group structure 7, displacement drive motor 8 , squeegee slot 9, ink tank lifting assembly 10; printing bracket 11; air outlet guide 51, nitrogen air inlet pipe 52, air outlet limit plate 53; driving shaft 61; lamp unit installation shell 71, condensate flow seat 72 , LED curing lamp set 73, sliding door leaf 74, L-shaped slider 75, lamp set installation groove 76, heat dissipation cavity 77; ink scraper 91; lifting motor 101, lifting drive shaft 102.

Implementation

The drawings are for illustrative purposes only and should not be construed as limitations of this patent; in order to better illustrate this embodiment, some components of the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations of this patent.

As shown in Figures 1 to 6, the printing unit for color inkjet printing includes: printing assembly, first curing lamp group, substrate transition roller group, sealed shell, nitrogen air knife structure, printing displacement bracket, second Curing lamp group structure and displacement drive motor, the top of the sealed shell is provided with a printing bracket, the substrate transition roller group is set inside the sealing shell, the printing assembly and the first curing lamp group are installed on the printing bracket one by one, and the sealing shell The base material inlet end of the sealing shell is equipped with a nitrogen air knife structure, and the base material discharging end of the sealed shell is equipped with a second curing lamp group structure. The nitrogen supply interface and nitrogen air knife structure on one side of the sealed shell are connected to the nitrogen gas storage barrel. The top shell of the sealed housing is installed on the printing displacement bracket, and the displacement drive motor drives the printing displacement bracket to move to the scraper slot through the conveyor belt.

In the above scheme, the displacement drive motor drives the conveyor belt to operate by driving the rotating shaft. Both ends of the printing displacement bracket are installed on the conveyor belt through limit slide blocks. The bottom of the limit slide block is installed on the limit slide bar and along the limit slide bar. The limit slider moves linearly, and the scraping groove is set on one side of the printing station. The scraping grooves are equipped with scraping parts, which correspond to the printing components one by one. The scraping slots are arranged in an arc to form a scraping slot group. The scraping slots are located below the printing displacement bracket. The entire scraping slot group is equipped with scraping slot lifting assemblies at both front and rear ends. The ink slot lifting assembly It is mainly composed of a lifting motor and a lifting driving shaft. The lifting motor drives the lifting driving shaft to rotate, and the lifting driving shaft drives the squeegee group to move up and down. The front and rear ends of the squeegee group are equipped with lifting limit slides to limit the The position slider moves up and down along the lifting limit slider, and the two limit sliders are respectively arranged on the left and right sides of the lifting drive shaft.

When the displacement structure of the printing module is implemented, the staff first starts the lifting motor, which drives the squeegee group to move upward through the lifting and lowering drive shaft. The displacement reaches the specified height, and then the displacement drive motor is started to drive the entire printing displacement bracket along both sides. The limit slider moves to the top of the squeegee groove group; then, during the displacement process of the printing displacement bracket, the squeegee piece on the squeegee groove scrapes off the ink at the bottom of the printing template of the jet printing assembly, and the ink is scraped off smoothly. It falls into the squeegee slot to facilitate subsequent recycling; finally, the lifting motor drives the squeegee set to reset downwards, and the displacement drive motor also drives the printing displacement bracket to reset to the printing station to continue color printing on the substrate. Printing.

In the above scheme, the nitrogen air knife structure mainly consists of an air outlet guide, a nitrogen air inlet pipe and an air knife bracket. One end of the nitrogen air inlet pipe is connected to one side of the air outlet guide, and the other end of the nitrogen air inlet pipe is connected to the nitrogen storage. Air barrel, the air outlet guide is installed on the inside of the fixed plates on both sides of the color inkjet printing equipment through the air knife bracket. There is an air outlet limit plate in front of the air outlet guide, and there is a printing base between the upper and lower air outlet limit plates. There is an exhaust gap through which the material passes. One side of the air outlet guide is provided with an air inlet end. The air inlet end is connected to the nitrogen gas storage barrel. The front end of the air outlet guide is provided with an air guide plate. The front ends of the two air guide plates face They gather in the middle to form an air outlet for nitrogen to blow out. The air outlet of the air outlet guide is aligned with the exhaust gap. The two air outlet guides are symmetrically arranged and located on the upper and lower sides of the printing substrate. The two air outlets are limited. There are support pillars between the plates. The support pillars are located at the left and right ends of the air exhaust gap. The two ends of the air outlet limit plate are fixed on the inside of the fixed plates on both sides of the color inkjet printing equipment. The air outlet guides are located at the front and rear ends. Both ends are equipped with transition rollers for transporting the substrate.

The operating principle of the nitrogen air knife structure: the printing substrate is pulled through the nitrogen air knife structure through the front and rear transition rollers, and then enters the printing station for color printing. There are air outlet guides on the upper and lower sides of the printing substrate. The air outlet guides Blow nitrogen at the inlet of the substrate. The exhaust pump extracts the nitrogen from the nitrogen storage barrel and discharges it through the air outlet of the air outlet guide. The air outlet of the air outlet guide plays a certain role in gathering gas. Strong wind blows out the oxygen from the outside, thereby preventing other gases in the oxygen from entering the printing station, maintaining color printing in a nitrogen environment, and improving the quality of color printing.

In the above scheme, the second curing lamp group structure is arranged and placed inside the mechanical equipment, the condensate flow seat is installed inside the lamp group installation shell, the LED curing lamp group is arranged on the condensate flow seat, and the sliding door leaf is installed on the lamp group The front end of the installation shell is installed. The lamp group installation shell is installed inside the mechanical equipment. L-shaped sliders are provided on both sides of the lamp group installation shell. The lamp group installation groove is fixed inside the mechanical equipment. The L-shaped slider is embedded in the lamp group installation The condensate flow seat is divided into an upper double reflux pipe and a lower double reflux pipe, and the upper double reflux pipe and the lower double reflux pipe are connected to each other through the end ports. The front end of the lower double return pipe is provided with a pipe joint for connecting the condensate. There is a heat dissipation cavity for heat dissipation between the bottom of the condensate flow seat and the lamp unit installation shell. The LED curing lamp unit is mainly composed of curing The curing lamp group is composed of a lamp group, a lamp group carrier plate and a lamp group covering fixed plate. The curing lamp group is installed on the lamp group carrier plate. The lamp group carrier plate is in contact with the condensate flow seat and is installed on the upper end of the condensate flow seat. The lamp group cover is fixed. The plate covers the upper end surface of the lamp group installation shell, and the lamp group covering fixed plate is provided with a strip-shaped light-transmitting opening, and the light-transmitting opening is covered by the light-transmitting plate.

When the second curing lamp group structure is implemented, the worker installs the three curing lamp group structures inside the mechanical equipment. The curing lamp group structure is inserted into the lamp group installation groove through the L-shaped slide bars on both sides and along the lamp group installation groove. Slide inward, and then use bolts to fix the limit. The coolant flows in through the inlet of the lower double return pipe, flows to the channel on one side of the upper double return pipe, and then flows through the U-shaped pipe to the channel on the other side of the upper double return pipe. , and finally flows out from the outlet of the lower double reflux pipe. When the LED curing lamp unit operates to generate heat, its heat is transferred to the condensate flow seat, and then the condensate absorbs its heat, and then passes through the upper double reflux pipe and the lower double reflux The tube dissipates heat and plays an efficient condensation effect to ensure stable and long-lasting operation of the product.

In the above scheme, the sealed shell is installed inside the wall panels on both sides of the mechanical equipment. The sealed shell and the wall panels on both sides form a nitrogen spray paint cavity. The two ends of the nitrogen spray paint cavity are respectively the base material feeding end and the base material. At the discharge end, the base material transition roller group is distributed in an arc shape inside the sealed shell and is located below the printing assembly. The nitrogen supply interface penetrates the inside of the sealed shell, and several nitrogen supply interfaces are distributed in an arc shape on the wall plate of the mechanical equipment. On the outside, the top of the sealed housing is provided with a printing plate holder, and the printing plate of the printing assembly is installed on the printing plate holder.

Printing process: First start the air pump to fill the nitrogen in the nitrogen gas storage barrel into the inside of the sealed shell. Nitrogen continues to enter the inside of the sealed shell through the nitrogen supply interface. Set the filling time according to the internal volume of the sealed shell; then stop feeding the sealing shell. The inside of the shell is filled with nitrogen, and then the nitrogen gas storage barrel connected to the air knife structure is started to blow out the gas through the air outlet guide, and continuously blows out nitrogen to the exhaust gap for the printing substrate to pass, to prevent external oxygen from entering the inside of the sealed shell; Finally, the traction motor and the printing component of the mechanical equipment are started to drive the printing substrate to continue to be transported forward, and the printing component prints on the printing substrate, and then the first curing lamp group prints on the previous group of printing components The pattern is pre-cured, and so on. Since it is carried out in a nitrogen environment, the final pattern is efficiently cured with the structure of the second curing lamp group, which can effectively improve the printing effect and efficiency.

Obviously, the above-mentioned embodiments of the present invention are only examples to clearly illustrate the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (3)

1. A jet printing unit for color jet printing, comprising: spout seal subassembly, first solidification banks, substrate transition roller group, seal housing, nitrogen gas air knife structure, spout seal displacement support, second solidification banks structure and displacement driving motor, its characterized in that: the top of the sealing shell is provided with a jet printing support, the substrate transition roller set is arranged inside the sealing shell, the jet printing component and the first curing lamp set are installed on the jet printing support one by one, the substrate feeding end of the sealing shell is provided with a nitrogen air knife structure, the substrate discharging end of the sealing shell is provided with a second curing lamp set structure, a nitrogen supply interface and a nitrogen air knife structure on one side of the sealing shell are connected with a nitrogen air storage barrel, the top shell of the sealing shell is installed on the jet printing displacement support, the displacement driving motor drives the jet printing displacement support to displace to the ink scraping groove position through a conveying belt, the displacement driving motor drives the conveying belt to operate through a driving rotating shaft, both ends of the jet printing displacement support are installed on the conveying belt through limiting sliding blocks, the bottoms of the limiting sliding blocks are installed on the limiting sliding strips and linearly displace along the limiting sliding strips, the ink scraping groove position set up in jet printing station one side, all be equipped with on the ink scraping groove position and scrape ink spare and jet printing subassembly one-to-one, the ink scraping groove position be the arc and arrange into and scrape the ink groove group, scrape the ink groove position and be located jet printing displacement support below, both ends all are equipped with the ink scraping groove lifting assembly around the whole group of ink scraping groove group, scrape the ink groove lifting assembly and mainly constitute by elevator motor and lift drive pivot, elevator motor drives lift drive pivot rotation and drives the ink scraping groove group through lift drive pivot and reciprocate, the front and back end of ink scraping groove group all be equipped with the spacing slider of lift, spacing slider reciprocates along the spacing draw of lift, two spacing sliders set up respectively in lift drive pivot left and right sides, second solidification lamp group structure specifically be: the LED curing lamp set mainly comprises a curing lamp set, a lamp set carrier plate and a lamp set cover fixing plate, wherein the curing lamp set is arranged on the lamp set carrier plate, the lamp set carrier plate is mutually contacted with the condensate flow seat and is arranged on the upper end of the condensate flow seat, the condensate flow seat is divided into an upper layer double return pipe and a lower layer double return pipe, the upper layer double return pipe and the lower layer double return pipe are mutually communicated through terminal ports, the front end of the lower layer double return pipe is provided with a pipe joint for connecting condensate, a heat dissipation cavity for heat dissipation is arranged between the bottom of the condensate flow seat and the lamp set mounting housing, the curing lamp set mainly comprises a curing lamp set, the lamp set carrier plate and the lamp set cover fixing plate, the curing lamp set is arranged on the lamp set carrier plate, the lamp set carrier plate and the condensate flow seat are mutually contacted, the lamp set cover fixing plate is covered on the upper end face of the lamp set mounting housing, and the lamp set cover fixing plate is provided with a long light transmission port which is covered by a light transmission plate; the nitrogen air knife structure mainly comprises an air outlet guide piece, a nitrogen air inlet pipe and an air knife bracket, wherein one end of the nitrogen air inlet pipe is connected to one side of the air outlet guide piece, the other end of the nitrogen air inlet pipe is connected to a nitrogen air storage barrel, the air outlet guide piece is arranged on the inner sides of fixing plates on two sides of color jet printing equipment through the air knife bracket, an air port limiting plate is arranged in front of the air outlet guide piece, and an air exhaust gap for a printing substrate to pass through is arranged between the upper air port limiting plate and the lower air port limiting plate; the three groups of second curing lamp sets are arranged in the mechanical equipment, the sliding door page is arranged at the front end of the lamp set mounting shell, and the lamp set mounting shell is arranged in the mechanical equipment.

2. The inkjet printing unit for color inkjet printing according to claim 1 wherein: the air outlet guide piece one side be equipped with the air intake end, the air intake end is connected in nitrogen gas storage, the front end of air outlet guide piece is equipped with the aviation baffle, two aviation baffles front end gather together to the centre and form the air outlet that supplies nitrogen gas to blow out, the air outlet of air outlet guide piece aim at the clearance of airing exhaust, two air outlet guide pieces symmetrical arrangement just are located printing substrate upper and lower both sides face, two wind gap limiting plates between be equipped with the support column, the support column is located the left and right sides both ends in clearance of airing exhaust, wind gap limiting plate both ends fix the fixed plate inboard in color inkjet printing equipment both sides, air outlet guide piece front and back both ends all be equipped with the excessive roller that is used for transmitting the substrate.

3. The inkjet printing unit for color inkjet printing according to claim 1 wherein: the utility model provides a seal shell, the inside both sides wallboard of mechanical equipment, seal shell and both sides wallboard form a nitrogen gas cavity that sprays paint, nitrogen gas cavity both ends below is substrate pan feeding end and substrate discharge end respectively, the excessive roller set of substrate is the arc and distributes inside seal shell and be located and spray the seal assembly below, supply nitrogen gas interface to link up inside seal shell, a plurality of supplies nitrogen gas interface be the arc and distribute in mechanical equipment's wallboard outside, seal shell's top is equipped with the printing plate fixing base, the printing plate of spraying the seal assembly is installed on the printing plate fixing base.