ES2289859A1 - Surface fingerprint installation involves acting synchronously with automatic supply by systems and automatic retreating by discharging system, where functional set has successive zones of printing, special varnish, heating and treating - Google Patents

Abstract

The installation involves acting synchronously with an automatic supply by systems and an automatic retreating by a discharging system. A functional set has successive zones of printing, special varnish, heating and treating.

Description

Digital printing installation of surfaces.

Technical sector

The present invention is related to the digital printing of surfaces, proposing an installation that allows you to make both a feed of parts to print from different materials and dimensions, as a printing process automatic, thus reducing both the times of Production as the process costs.

State of the art

In contrast to printing methods traditional, digital printing allows transfers direct from the designs created on a computer to the material to print without the need for negatives or intermediate processes, thus constituting a true business opportunity in circulation short and customized

However, currently the printing process  automatic on large surfaces is difficult due to the shortage of means for feeding materials to print continuously and a printing process in adequate conditions.

On the other hand, when the pieces to be printed do not they are of smooth surface, presenting undulations, the heads of impression should move relative to the way the surface presents maintaining a constant distance between said heads Print and surface mentioned. This movement in the current facilities is only resolved by manual control facilities or extremely complex installations and expensive.

Object of the invention

According to the invention, a installation of digital surface printing, which has been developed according to an embodiment that provides very characteristic advantageous, overcoming the inconveniences of the facilities Conventionals of the same function.

The installation object of the invention is constituted by a loading zone, a printing zone, a zone of special varnishing, a baking zone, a curing zone and finally a discharge zone, establishing all zones controlled by a process management program You get an automated process.

This installation allows printing both large areas of for example two meters wide and of any length, such as smaller surfaces, for example of two by three meters, allowing different projects idols, such as printing façade coatings, printing of books, advertising posters, posters, etc.

For this, the installation includes an area of large area cargo, consisting of a lung formed by lockers in which pieces of different materials are stored and dimensions; and a smaller surface loading area, constituted by a table that has a set of rollers folding that is removed to the side to let rise by a  suction cup elevator parts located on a lower pallet.

This double charging system in addition to allowing perform the printing of pieces of different dimensions, also allows to make multiplicity prints of common pieces or punctual impressions of unique pieces.

The printing area consists of a printing machine that prints at a speed of for example 50 m2 per hour, being able to print in different colors as black, yellow, red, blue, white, etc.

The special varnishing zone is used to varnish those pieces that will be located outdoors, and consists of at least two mobile nozzles transversely and in height so that they fit a minimum distance from the surface to be varnished, allowing varnish surfaces of any shape, which can be both smooth and wavy, also including fans that allow the elimination of odors produced by the varnished

In the baking zone only they are introduced those pieces that after having been varnished need a heat drying process.

The cure zone consists of a lung  which allows the storage of the different printed pieces for final drying, while the discharge zone may be constituted by a warehouse lung formed by lockers and Programmed controlled.

The passage of the pieces from one area to another is performed using motion trains that are synchronized, so that the whole process is done in a way keep going. In the trains of movement there are also some stomps that prevent parts from moving from their initial position during the different stages of the process, preventing the finish Final result defective.

Description of the figures

Figure 1 shows a plan view of a example of realization of a digital printing installation of according to the invention.

Figure 2 shows a perspective of the area loading for smaller parts, according to an example of embodiment.

Figure 3 is a plan view of the machine  varnishing

Detailed description of the invention

The object of the present invention relates to a digital surface printing facility, which allows print surfaces of different materials, sizes and shapes of automated way.

The installation consists of a zone of printing (1), a special varnishing zone (2), an area of baked (3) and a curing zone (4).

The printing area (1) consists of a conventional printing machine (5), which can reach speeds of up to 50 m 2 per hour, allowing to perform prints in different colors like white, black, red yellow or blue, among others.

Immediately after this machine print (5) is located a roller train (6) that transports the printed pieces (7) to an area (8), in which the pieces that they have to be varnished they separate towards the varnishing area special (2), and those that should not be varnished continue towards the curing zone (4).

In the area of special varnishing (2), the pieces  printed (7) pass through a special varnishing unit (9), the which has at least two nozzles (9.1) moving in direction transverse and in height, thus allowing to adjust a constant distance between said nozzles (9.1) and the surface a varnish, which allows to varnish evenly smooth and wavy surfaces, also incorporating fans (10) that allow the elimination of odors produced by varnishing.

Once the printed pieces (7) have passed through the varnishing unit (9) these are introduced in an oven (11), in which they dry, after which they pass to the cured area (4), where are left, along with the pieces that have not been varnished, waiting if stored for shipment or delivery.

To feed the parts to be printed,  provides a loading arrangement comprising a zone (12) for large pieces, for example two meters wide and any length, and another zone (13) for parts smaller than one fixed length, for example two by three meters.

The area (12) for loading large parts is constituted by a storage lung (14), in which they are located different lockers (15) where pieces of different types house of materials and / or sizes, from which the feed automatically. This loading area (12) is communicates with the printing area (1) by a roller train (16) from which the pieces are oriented towards the area of printing (1) using a robot (17).

The area (13) for loading minor parts is constituted by a roller table (18), which disposes in its part bottom of a housing (19) for one or more pallets of parts while above is a suction cup elevator (twenty).

The rollers (21) of the table (18) are located hinged by its central part, so that when needed one piece, said rollers (21) are folded and removed to a side of the table (18), allowing the suction cup lift (20) can lower and take a piece of the lower housing and raise it to a height above the table surface (18); so that when the part has been raised the rollers (21) return to their initial position allowing the elevator (20) deposit the piece on them.

Said loading area (13) is located immediately ahead of the printing area (1), performing Direct feed of the parts to the printing machine (5).

The installation includes at the end an area of unloading (22) consisting of a roller train (23), for transport the finished parts from the curing zone (4) to the shipping area, and may be included in relation to this area of discharge (22) also a storage lung, in which you can deposit the finished parts in a classified way.

Adjacent to the curing zone (4) you can also have a storage lung (4.1), to deposit in he directly the minor pieces (7) finished and from there Remove them from the installation.

The different zones of the installation go arranged consecutively, with a distribution that depends of the needs of production and the form of the local accommodation, being able to communicate the consecutive areas by roller bearings or other systems such as robotic transports

In transport areas, the incorporation of tampers to press the pieces on the rollers corresponding, in order to prevent movements from occurring of parts that may cause a defective finish.

In the functional aspect, all zones operating systems are synchronized with each other, under control through a management program, so that all the process develops continuously and automatically.

Claims (7)

1. Installation of digital surface printing, for printing smooth or corrugated pieces, characterized in that it comprises a functional set consisting of a printing zone (1), a special varnishing zone (2), a baking zone (3) and a curing zone (4), which act synchronized with each other through control managed by a computer program, for the treatment of parts that are fed and removed automatically by means of a loading system (12, 13) and a system of download (22). 2. Installation of digital printing of surfaces, according to the first claim, characterized in that the loading system of the pieces to be printed comprises an area (12) for feeding large parts, consisting of a roller train (16) and a warehouse lung (14) provided with lockers (15) for the storage of the different types of parts. 3. Installation of digital surface printing, according to the first claim, characterized in that the loading system of the pieces to be printed comprises an area (13) for feeding smaller parts, consisting of an articulated roller table (18), below which a housing (19) is included to locate one or more pallets of pieces, while above it is arranged a suction cup elevator (20), the rollers (21) of the table (18) being hinged by its central area, with the possibility of folding and withdrawing to one side to allow the passage of the suction cup elevator (20) to the lower housing (19) to take the parts thereof. 4. Installation of digital printing of surfaces, according to the first claim, characterized in that after the printing area (1) there is a part separation zone (8), in which the printed parts (7) are diverted towards the special varnishing zone (2) or they are carried directly towards the curing zone (4), depending on the finish they require. 5. Installation of digital surface printing, according to the first claim, characterized in that the special varnishing zone (2) includes a varnishing unit (9) that has at least two heads (9.1) with transverse and height movement , which maintain a constant distance from the surface to be varnished, making a uniform varnish application. 6. Installation of digital surface printing, according to the first claim, characterized in that the unloading system (22) comprises a roller train (23) for transporting the finished parts (7) towards its evacuation, the arrangement being also provided of a storage lung to classify the pieces (7) at the exit. 7. Installation of digital printing of surfaces, according to the first claim, characterized in that adjacent to the curing zone (4) the incorporation of a storage lung (4.1) is foreseen, in which the smaller pieces can be deposited directly (7) finished, to be removed.