CN113561672A

CN113561672A - UV printing process

Info

Publication number: CN113561672A
Application number: CN202110840457.3A
Authority: CN
Inventors: 杨忠海
Original assignee: Shanghai May May Noble Printing Co ltd
Current assignee: Shanghai May May Noble Printing Co ltd
Priority date: 2021-07-24
Filing date: 2021-07-24
Publication date: 2021-10-29
Anticipated expiration: 2041-07-24
Also published as: CN113561672B

Abstract

The application discloses a UV printing process, which comprises the following steps: the method comprises the following steps of firstly, preparing a screen printing plate, secondly, printing, thirdly, curing, fourthly, cleaning, wherein a UV printing and curing device comprises a shell, an LED lamp panel arranged in the shell, a cleaning device for cleaning the LED lamp panel and a driving assembly for driving the cleaning device to move; the cleaning device comprises a connecting plate driven by a driving assembly to move, a supporting seat arranged on the connecting plate and a wiping block arranged on the supporting seat; the driving assembly comprises connecting rods fixed at four top corners inside the shell, chain wheels rotatably connected with the connecting rods, chains meshed with the chain wheels, connecting shafts fixedly connected with the chain wheels and coaxially rotating, and driving pieces driving the chain wheels to rotate; the chain is fixedly provided with a connecting block, and the connecting plate is fixedly connected with the connecting block; and step five, standing. The LED lamp has the effect of reducing the influence of the solvent condensed into liquid drops on the surface of the LED lamp on the LED lamp irradiation.

Description

UV printing process

Technical Field

The application relates to the technical field of printing, in particular to a UV printing process.

Background

With the progress of society and the improvement of aesthetic appearance, people have higher and higher requirements on printed products. In order to beautify the package, the printed color needs to have smooth and colorful colors, higher glass and metal luster and stereoscopic impression to show the gorgeous and noble colors. At present, the production and manufacturing of the color packaging box mainly adopt a UV printing process.

In the related art, the chinese invention application document with publication number CN104786684A discloses a full gravure solvent-free printing process method of LED UV cold light source, comprising the following steps: a, conveying the printing stock forwards; b, conveying the printing stock to a multicolor printing unit, wherein the multicolor printing unit comprises a plurality of printing units, each printing unit comprises a UV printing machine for printing by using UV ink and an LED UV cold light source for drying the printing stock, the printing stock is conveyed between a gravure printing rubber roll and a gravure printing plate roll of the UV printing machine, a UV ink supply device supplies ink to the gravure printing plate roll, patterns on the gravure printing plate roll are transferred to the surface of the printing stock in the rotating process of the gravure printing rubber roll and the gravure printing plate roll, and then the patterns on the surface of the printing stock are cured by the LED UV cold light source; c, continuously conveying the printing stock forward to the next printing unit to print another color; d, repeating the step C according to the required color types; e, cutting the printing stock subjected to the step D into a finished product.

Due to the fact that the LED cold light source is used for solidification, in the solidification process, the solvent in the printing ink can volatilize and adhere to the surface of the LED lamp and is condensed into liquid again to form the lens, normal irradiation of light rays of the LED lamp is affected, and therefore the solidification effect of the subsequent printing ink is affected.

Disclosure of Invention

In order to reduce the influence of the solvent condensed into liquid drops on the surface of the LED lamp on the irradiation of the LED lamp, the application provides a UV printing process.

The subject name provided by the application adopts the following technical scheme:

a UV printing process comprising the steps of:

preparing a silk-screen printing plate, namely preparing the silk-screen printing plate according to the requirement of a printed pattern;

printing, namely printing the patterns on the silk-screen printing plate to a printing stock through a printer;

curing, namely curing the ink by using an LED cold light source of the UV printing curing device;

cleaning, namely cleaning the LED cold light source;

the UV printing and curing device comprises a shell, an LED lamp panel arranged in the shell, a cleaning device for cleaning the LED lamp panel and a driving assembly for driving the cleaning device to move; the cleaning device comprises a connecting plate driven by a driving assembly to move, a supporting seat arranged on the connecting plate and a wiping block arranged on the supporting seat; the driving assembly comprises connecting rods fixed at four top corners inside the shell, chain wheels rotatably connected with the connecting rods, chains meshed with the chain wheels, connecting shafts fixedly connected with the chain wheels and coaxially rotating, and driving pieces driving the chain wheels to rotate; the chain is fixedly provided with a connecting block, and the connecting plate is fixedly connected with the connecting block;

and step five, standing, namely standing the printed printing stock to completely cure the printing ink.

Through adopting above-mentioned technical scheme, the sprocket rotates and drives the chain motion, and the chain motion drives the connecting plate motion to the piece motion of wiping of drive setting on the connecting plate wipes the piece motion, cleans condensing the remaining solvent liquid drop on the LED lamp plate, and the reduction leads to the inhomogeneous condition of light emission of LED lamp to appear because of the lens effect that the liquid drop formed, increases the stability that LED lamp light shines, thereby stabilizes the solidification effect to printing ink.

Optionally: the cleaning device also comprises a supporting plate, a connecting column which is fixed on one side of the supporting plate close to the connecting plate and is in sliding connection with the connecting plate, a nut which is in threaded connection with the connecting column and an elastic piece which drives the supporting plate to move towards the direction far away from the connecting plate; the supporting seat is installed on the supporting plate.

Through adopting above-mentioned technical scheme, the elastic component drives the backup pad to the direction motion of keeping away from the connecting plate for wipe the piece can with the inseparable butt of LED lamp plate, improve the effect of cleaning LED.

Optionally: the supporting seat is connected with the supporting plate in a sliding mode, and an air cylinder for driving the supporting seat to slide is arranged on the supporting plate.

Through adopting above-mentioned technical scheme, the reciprocating motion of backup pad length direction is followed at the backup pad seat to the supporting seat under the drive of cylinder, increases and transversely cleans, improves the effect of cleaning to the LED lamp plate.

Optionally: one end of the supporting seat close to the supporting plate is provided with a sliding plate which is in sliding connection with the supporting plate; and two sides of the sliding plate are provided with limiting blocks for limiting the sliding of the sliding plate.

Through adopting above-mentioned technical scheme, the stopper is spacing to the slip of sliding plate, improves the gliding stability of sliding plate.

Optionally: one end of the supporting seat, which is far away from the connecting plate, is a connecting seat, the section of the connecting seat is U-shaped, and a placing groove for placing wiping blocks is formed in the middle of the connecting seat; the two sides of the connecting seat are provided with a pressing plate which is rotationally connected with the connecting seat and an elastic piece which drives the pressing plate to rotate towards the direction close to the connecting seat.

Through adopting above-mentioned technical scheme, the clamp plate compresses tightly fixedly to the piece of wiping that is located the standing groove, increases the stability that the piece of placing placed in the standing groove placed.

Optionally: a limiting rod is fixed on the connecting rod.

Through adopting above-mentioned technical scheme, the gag lever post can be spacing to the removal of cleaning assembly's connecting plate, prevents that the connecting plate from excessively moving, increases the stability that cleaning assembly removed.

Optionally: and the two ends of the shell are provided with air suction components, and each air suction component comprises an air suction nozzle fixedly connected with the shell and an air suction pipe communicated with the air suction nozzle.

By adopting the technical scheme, the solvent vapor escaping from the shell of the air suction assembly is absorbed, and the solvent vapor entering the air is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the cleaning device also comprises a supporting plate, a connecting column which is fixed on one side of the supporting plate close to the connecting plate and is in sliding connection with the connecting plate, a nut which is in threaded connection with the connecting column and an elastic piece which drives the supporting plate to move towards the direction far away from the connecting plate; the supporting seat is arranged on the supporting plate;

2. the elastic piece drives the supporting plate to move in the direction away from the connecting plate, so that the wiping block can be tightly abutted against the LED lamp panel, and the wiping effect on the LED is improved;

3. the limiting block limits the sliding of the sliding plate, and the sliding stability of the sliding plate is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural view showing the interior of the housing;

FIG. 3 is a schematic structural view embodying the housing;

FIG. 4 is a schematic view showing the construction of an access panel;

FIG. 5 is a schematic structural view of a cleaning apparatus;

FIG. 6 is a schematic view showing a structure of the support base;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic structural diagram of a drive assembly;

fig. 9 is a schematic view of the structure of the getter module.

Description of reference numerals: 1. a housing; 11. a support bar; 12. an access hole; 121. a bump; 13. an access panel; 131. a groove; 14. a notch; 2. an LED lamp panel; 3. a cleaning device; 31. a connecting plate; 32. a support plate; 321. a limiting block; 33. connecting columns; 34. a nut; 35. a spring; 36. a cylinder; 361. a fixing plate; 37. a supporting seat; 371. a sliding plate; 3711. a protrusion; 372. a connecting seat; 3721. a placement groove; 373. a fixed block; 374. pressing a plate; 3741. a rotating shaft; 375. a torsion spring; 38. a wiping block; 4. a drive assembly; 41. a connecting rod; 42. a sprocket; 43. a chain; 431. connecting blocks; 44. a connecting shaft; 45. a limiting rod; 5. a getter assembly; 51. a suction nozzle; 52. and (4) sucking a pipe.

Detailed Description

The present application is described in further detail below with reference to the attached figures.

Example (b): the embodiment of the application discloses a UV printing process, which comprises the following steps:

the method comprises the following steps: and (5) preparing a silk screen printing plate. And preparing the silk screen printing plate according to the requirement of the printing pattern.

Step two: and (7) printing. The pattern on the screen printing plate is printed on a printing stock (paper/PP/PET material) by a printer.

Step three: and (5) curing. The ink is cured using an LED cold light source of the printer.

Step four: and (6) cleaning. The cleaning device is used for cleaning the LED lamp and removing liquid drops condensed on the surface of the LED lamp.

Referring to fig. 1 and 2, a UV printing curing device includes a housing 1, an LED lamp panel 2 disposed inside the housing 1, a cleaning device 3 for cleaning the LED lamp panel 2, a driving assembly 4 for driving the cleaning device 3 to move, and suction assemblies 5 disposed at two ends of the housing 1.

Referring to fig. 1 and 3, support rods 11 are fixed at two ends of the housing 1, and the support rods 11 are fixedly connected with a frame of a uv printing machine to support and fix the housing 1. Notches 14 are formed at two ends of the shell 1, and the notches 14 are used for printing stocks to pass through. The air suction assembly 5 is fixed on the top of the notch 14.

The access hole 12 has been seted up on the top of shell 1, and access hole 12 upper cover is equipped with access panel 13, and access panel 13's sectional area is greater than the sectional area of access hole 12 for access panel 13 can cover access hole 12 completely. The LED lamp panel 2 and the cleaning device 3 inside the shell 1 can be maintained and replaced through the access hole 12.

Referring to fig. 3 and 4, a protrusion 121 disposed around the access opening 12 is fixed on the housing 1, and a groove 131 for inserting the protrusion 121 is formed on one side of the access panel 13 close to the access opening 12. After the projection 121 is inserted into the groove 131, the sealing performance of the access panel 13 for sealing the access opening 12 can be increased.

Referring to fig. 5, the cleaning device 3 includes a connecting plate 31, a supporting plate 32 disposed on one side of the connecting plate 31 close to the LED lamp panel 2, a connecting column 33 fixed on one side of the supporting plate 32 close to the connecting plate 31, a nut 34 in threaded connection with the connecting column 33, a spring 35 sleeved on the connecting column 33, a supporting seat 37 disposed on one side of the supporting plate 32 far from the connecting plate 31, a cylinder 36 driving the supporting seat to slide on the supporting plate 32, and a wiping block 38 mounted on the supporting seat 37.

Two ends of the spring 35 are respectively fixedly connected with the connecting plate 31 and the supporting plate 32, and drive the supporting plate 32 to move in a direction away from the connecting plate 31. The nut 34 is disposed on a side of the connecting plate 31 away from the support plate 32, and the nut 34 abuts against the connecting plate 31 by being urged by the spring 35. The number of the air cylinders 37 is two, and they are respectively provided at both ends of the support plate 32. The wiping block 38 is generally made of a material having good adsorbability, such as sponge.

Referring to fig. 6 and 7, the supporting seat 37 includes a sliding plate 371, a connecting seat 372 fixed to one end of the sliding plate 371 away from the supporting plate 32, a fixing block 373 fixed to a top end of the connecting seat 372, a pressing plate 374 rotatably connected to the fixing block 373, and a torsion spring 375 for driving the pressing plate 374 to rotate toward the direction close to the connecting seat 372.

A limiting block 321 is fixed on one side of the supporting plate 32 close to the supporting seat 37, the limiting block 321 is arranged along the length direction of the supporting plate 32, and the limiting blocks 321 are located on two sides of the sliding plate 371. The cross-section of the stopper 321 is L-shaped, the bottom end of the sliding plate 371 is fixed with a protrusion 3711, and the protrusion 3711 slides between the two stoppers 321, so that the sliding plate 371 can be limited in sliding, and the sliding plate 371 can be prevented from leaving the support plate 32 in the vertical direction.

Fixed plates 361 are fixed at both ends of the supporting plate 32, the cylinder body of the cylinder 36 is fixed on the fixed plates 361, and the piston rod of the cylinder 36 is fixedly connected with the sliding plate 371. The sliding of the sliding plate 371 on the supporting plate 32 can be carried out by extending or retracting the piston rod of the air cylinder 36.

The connecting seat 372 is U-shaped in vertical section, a placing groove 3721 for placing the wiping piece 38 is arranged in the middle, and the pressing plate 374 can extend into the placing groove 3721. A rotating shaft 3741 rotatably connected with the fixing block 373 is fixed to both ends of the pressing plate 374. The torsion spring 375 is fixedly connected to the rotating shaft 3741 and the fixing block 373, and drives the pressing plate 374 to turn toward the positioning slot 3721. The pressure plate 374 can press the wiping pieces 38 placed in the placement groove 3721, and the placing stability of the wiping pieces 38 placed in the placement groove 3721 is improved.

Referring to fig. 8, the driving assembly 4 includes a connecting rod 41 fixed inside the housing 1, a sprocket 42 rotatably connected to the connecting rod 41, a chain 43 engaged with the sprocket 42, a connecting shaft 44 fixedly connected to the sprocket 42 and coaxially rotating, and a stopper rod 45 fixedly connected to the connecting rod 41.

The number of the connecting rods 41 is four, and the connecting rods are fixed at four vertex angles inside the housing 1. The chain 43 can engage with two chain wheels 42 on the same side of the housing 1 at the same time, so that the two chain wheels 42 on the same side of the housing 1 can rotate synchronously. The connecting shaft 44 is fixedly connected with the two chain wheels 42 which are positioned at the same end of the shell 1 and positioned at two sides of the shell 1, and can drive the chain wheels 42 positioned at two sides of the shell 1 to synchronously rotate, and the connecting shaft 44 is parallel to the width direction of the shell 1. A motor for driving the chain wheel 42 to rotate is fixed on one connecting rod 41, and power is provided for the rotation of the chain wheel 42; and the motor intermittently rotates forward and backward to drive the chain 43 to move forward and backward in a clearance manner.

A connecting block 431 is fixed on the chain 43, and the connecting block 431 and one side of the connecting plate 31, which is far away from the supporting plate 32, are fixed on the chain; the two chains 43 located on both sides of the housing 1 have their connecting blocks 431 located opposite to each other so that the connecting plates 31 are fixed to the two connecting blocks 431 in parallel with the connecting shaft 44. The two ends of the limiting rod 45 are fixedly connected with the two connecting rods 41, and the limiting rod 41 is parallel to the length direction of the connecting plate 31.

Referring to fig. 9, the air suction assembly 5 includes a suction nozzle 51 fixedly connected to the housing 1 and a suction pipe 52 communicating with the suction nozzle 51. The suction nozzle 51 is provided along the longitudinal direction of the notch 14, and the bottom end of the suction nozzle 511 is opened to absorb the solvent vapor escaping from the notch 14. The end of the suction pipe 52 remote from the suction nozzle 51 is connected to an air pump to provide a negative pressure to the suction nozzle 51.

Step five: and (5) standing. And (4) standing the printed printing stock to completely solidify the printing ink.

The implementation principle of the UV printing process in the embodiment of the application is as follows: in the process of curing the printing ink by the LED lamp, the cleaning device 3 cleans the LED lamp panel under the drive of the drive component 4, and solvent drops condensed on the surface of the LED are cleaned. The phenomenon that light emission of the LED lamp is uneven due to the lens effect formed by liquid drops is reduced, and the stability of light irradiation of the LED lamp is improved.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A UV printing process comprising the steps of:

cleaning, namely cleaning the LED cold light source;

the UV printing and curing device comprises a shell (1), an LED lamp panel (2) arranged in the shell (1), a cleaning device (3) for cleaning the LED lamp panel (2) and a driving assembly (4) for driving the cleaning device (3) to move; the cleaning device (3) comprises a connecting plate (31) driven by a driving assembly (4) to move, a supporting seat (37) arranged on the connecting plate (31) and a wiping block (38) arranged on the supporting seat (37); the driving assembly (4) comprises connecting rods (41) fixed at four vertex angles inside the shell (1), a chain wheel (42) rotationally connected with the connecting rods (41), a chain (43) meshed with the chain wheel (42), a connecting shaft (44) fixedly connected with the chain wheel (42) and coaxially rotating, and a driving piece driving the chain wheel (42) to rotate; a connecting block (431) is fixed on the chain (43), and the connecting plate (31) is fixedly connected with the connecting block (431);

2. The UV printing process according to claim 1, characterized in that: the cleaning device (3) further comprises a supporting plate (32), a connecting column (33) which is fixed on one side of the supporting plate (32) close to the connecting plate (31) and is in sliding connection with the connecting plate (31), a nut (34) which is in threaded connection with the connecting column (33), and an elastic piece which drives the supporting plate (32) to move towards the direction far away from the connecting plate (31); the supporting seat (37) is arranged on the supporting plate (32).

3. The UV printing process according to claim 2, characterized in that: the supporting seat (37) is connected with the supporting plate (32) in a sliding mode, and an air cylinder (36) driving the supporting seat (37) to slide is arranged on the supporting plate (32).

4. The UV printing process according to claim 3, wherein: one end of the supporting seat (37) close to the supporting plate (32) is provided with a sliding plate (371) which is connected with the supporting plate (32) in a sliding way; and two sides of the sliding plate (371) are provided with limiting blocks (321) for limiting the sliding of the sliding plate (371).

5. The UV printing process according to claim 1, characterized in that: one end of the supporting seat (37) far away from the connecting plate (31) is provided with a connecting seat (372), the section of the connecting seat (372) is U-shaped, and a placing groove (3721) for placing the wiping block (38) is formed in the middle of the connecting seat; both sides of connecting seat (372) are provided with and rotate with connecting seat (372) and are connected with clamp plate (374) and drive clamp plate (374) to being close to connecting seat (372) direction pivoted elastic component.

6. The UV printing process according to claim 1, characterized in that: a limiting rod (45) is fixed on the connecting rod (41).

7. The UV printing process according to claim 1, characterized in that: both ends of shell (1) are provided with air suction assembly (5), and air suction assembly (5) are including with shell (1) fixed connection's suction nozzle (51) and with suction nozzle (51) the breathing pipe (52) intercommunication.