UV reverse gloss oil applying and curing equipment for thin labels

Abstract

The utility model relates to UV reverse gloss oil applying and curing equipment for thin labels. The UV reverse gloss oil applying and curing equipment comprises a gloss oil box, a printing and oiling assembly, a reversing roller assembly and a UV light source, the printing oil coating assembly comprises an oil conveying roller, the lower half portion of the oil conveying roller is located in a gloss oil box, the upper half portion of the oil conveying roller is tangent to an anilox roller, the other side of the anilox roller is tangent to an oil applying roller, and the other side of the oil applying roller is tangent to a traction roller. Label paper penetrates between the oiling roller and the traction roller, the conveying direction of the label paper is changed through the reversing roller assembly, and the label paper firstly extends downwards after leaving from the traction roller, then extends forwards to form a loopback area and finally extends out from the rear side. A UV light source is arranged in the loopback area and right faces the oil coating face of the label paper. The device can achieve a reverse effect on thin label paper and is simple in overall structure, small in occupied space and good in curing effect, compared with purchasing of a whole set of equipment, a workshop can conduct assembly by itself, and the cost of the workshop cannot be remarkably increased.

Description

Technical Field

[0001] The utility model relates to the field of label printing, in particular to a UV reverse varnish oiling and curing device for thin labels. Background Art

[0002] Reverse-printed packaging cardboard is currently popular with consumers. However, the printing equipment required is large and expensive, placing high demands on the printing company. Furthermore, this type of printing equipment is mostly designed for printing on rigid materials like cardboard and paperboard, and is not yet suitable for printing thin labels. Therefore, achieving reverse-printing in label production workshops with a simple, low-cost method is a common pain point in the industry. Utility Model Content

[0003] The purpose of this application is to provide a UV reverse varnish oiling and curing device for thin labels, aiming to solve the problems existing in the prior art.

[0004] The embodiment of the present application provides a varnish oiling and curing device for UV reverse of thin labels, including a varnish box, a printing oiling component, a reversing roller component and a UV light source; the printing oiling component includes an oil transfer roller, an anilox roller, an oiling roller and a traction roller, the lower half of the oil transfer roller is located in the varnish box, the upper half of the oil transfer roller is tangent to the anilox roller, the other side of the anilox roller is tangent to the oiling roller, and the other side of the oiling roller is tangent to the traction roller, the oil transfer roller, anilox roller, oiling roller and the axial ends of the traction roller are all equipped with transmission gears and are meshed and connected in sequence; the label paper passes between the oiling roller and the traction roller, and the label paper changes its conveying direction through the reversing roller assembly. After leaving the traction roller, the label paper first extends downward, then extends forward to form a loop area, and finally extends out from the rear side; a UV light source is provided in the loop area, and the UV light source is facing the oiled surface of the label paper.

[0005] Furthermore, the reversing roller assembly includes a first reversing roller and a second reversing roller, a first reversing roller is provided on the entry side of the traction roller, and the first reversing roller is located below the printing oiling assembly; a second reversing roller is provided on the exit side of the traction roller to change the conveying direction of the label paper to downward conveyance, a third reversing roller is provided below the second reversing roller to convey the label paper to the front side, a fourth reversing roller is provided in front of the third reversing roller to convey the label paper downward again, and a fifth reversing roller is provided below the fourth reversing roller to convey the label paper to the rear side; a UV light source and a support plate are provided between the third reversing roller and the fourth reversing roller, and the UV light source and the support plate are respectively provided on the upper and lower sides of the label paper.

[0006] Furthermore, a feed buffer roller group is provided on the entry side of the first reversing roller. The feed buffer roller group includes a plurality of feed rollers that are staggered up and down, and the label paper is wound around the plurality of feed rollers in sequence.

[0007] Furthermore, a discharge buffer roller group is provided on the exit side of the fifth reversing roller. The discharge buffer roller group includes a plurality of discharge rollers that are staggered up and down, and the label paper is wound around the plurality of discharge rollers in sequence.

[0008] Furthermore, an oil baffle is installed on the front side of the oil transfer roller, and the front side of the oil baffle forms the oil inlet of the varnish box. The varnish box at the oil inlet is connected to an oil filling pipe and a valve.

[0009] Furthermore, an oil scraper is installed on the front side of the anilox roller, the oil scraper is fixed on the adjustment plate, and both ends of the adjustment plate are installed on the chassis platform through lifting adjustment screws.

[0010] The beneficial effects of the present invention are: the present invention can achieve a reverse effect on thin label paper, has a simple overall structure, occupies little space, and has a good curing effect. Compared with purchasing a complete set of equipment, the workshop can assemble it by itself, which will not significantly increase the cost of the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the internal principle structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0013] In the picture:

[0014] 1. Varnish box; 2. UV light source; 3. Oil transfer roller; 4. Anilox roller; 5. Oiling roller; 6. Traction roller; 7. Transmission gear; 8. Label paper; 9. Oil baffle; 10. Oil filling pipe; 11. Oil scraper; 12. Adjustment plate; 13. Lifting adjustment screw; 14. First reversing roller; 15. Second reversing roller; 16. Third reversing roller; 17. Fourth reversing roller; 18. Fifth reversing roller; 19. Support plate; 20. Feed buffer roller group; 21. Feed roller; 22. Discharge buffer roller group; 23. Discharge roller; 24. Chassis platform. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] like Figure 1The illustrated apparatus for UV reverse curing of thin-sheet labels includes a varnish cartridge 1, a printing oiling assembly, a reversing roller assembly, and a UV light source 2. The printing oiling assembly comprises an oil transfer roller 3, an anilox roller 4, an oiling roller 5, and a draw roller 6. The lower half of the oil transfer roller 3 is located in the varnish cartridge 1, while the upper half of the oil transfer roller 3 is tangential to the anilox roller 4. The other side of the anilox roller 4 is tangential to the oiling roller 5, which in turn is tangential to the draw roller 6. Drive gears 7 are mounted on the shaft ends of the oil transfer roller 3, anilox roller 4, oiling roller 5, and draw roller 6, meshing in sequence. Label paper 8 passes between the oiling roller 5 and draw roller 6. Driven by a motor, the draw roller 6 rotates clockwise, while the oiling roller 5 rotates counterclockwise, squeezing the label paper 8 from front to back through the rollers. Due to the gear transmission, the anilox roller 4 rotates clockwise, while the oil transfer roller 3 rotates counterclockwise.

[0017] In order to prevent the oil transfer roller 3 from splashing when it rotates, an oil baffle 9 is installed on the front side of the oil transfer roller. The front side of the oil baffle 9 forms the oil inlet of the varnish box 1. The varnish box 1 at the oil inlet is connected to an oil filling pipe 10 and a valve. Figure 2 shown.

[0018] The front side of the anilox roller 4 is provided with an oil scraper 11, which is fixed on an adjustment plate 12. The two ends of the adjustment plate 12 are mounted on the chassis platform 24 via lifting adjustment screws 13. Figure 2 As shown, the lifting adjustment screw 13 is rotatably connected to the adjustment plate 12, and the lifting adjustment screw 13 is threadedly connected to the chassis platform 24. When the lifting adjustment screw 13 is rotated, the adjustment plate 12 can be driven to rise and fall, thereby changing the distance between the scraper plate 11 and the anilox roller 4, thereby adjusting the amount of oil on the anilox roller 4.

[0019] The label paper 8 changes its conveying direction through the reversing roller assembly. Specifically, the reversing roller assembly includes a first reversing roller 14 and a second reversing roller 15. The first reversing roller 14 is provided on the inlet side of the traction roller 6 and is located below the printing and oiling assembly. The label paper 8 passes around the first reversing roller 14 from below and then wraps around the traction roller 6. A second reversing roller 15 is provided on the exit side of the traction roller 6 to change the conveying direction of the label paper 8 to downward conveying, and a third reversing roller 16 is provided below the second reversing roller 15 to convey the label paper 8 to the front side, and a fourth reversing roller 17 is provided in front of the third reversing roller 16 to convey the label paper 8 downward again, and a fifth reversing roller 18 is provided below the fourth reversing roller 17 to convey the label paper 8 to the rear side; a UV light source 2 and a support plate 19 are provided between the third reversing roller 16 and the fourth reversing roller 17, and the UV light source 2 and the support plate 19 are respectively provided on the upper and lower sides of the label paper 8, and the UV light source 2 is facing the oiled surface of the label paper 8, so that the label paper 8 forms a loop to complete the UV light source 2 irradiation and curing step.

[0020] In conventional processes, reverse varnish coating requires a thoroughly dried substrate. To shorten the production line length during drying, a feed buffer roller assembly 20 is installed on the inlet side of the first reversing roller 14. The feed buffer roller assembly 20 includes multiple feed rollers 21 staggered vertically. The label paper 8 is wound around these feed rollers 21 in sequence, with the last feed roller 21 positioned at the top to connect with the first reversing roller 14. This increases the length of the label paper 8 in a shorter space, saving equipment space.

[0021] Also, in order to shorten the production line length before winding, a discharge buffer roller group 22 is provided on the exit side of the fifth reversing roller 18. The discharge buffer roller group 22 includes a plurality of discharge rollers 23 that are staggered up and down. The label paper 8 is wound around the plurality of discharge rollers 23 in sequence. The first discharge roller 23 is located on the lower side and is used to connect with the fifth reversing roller 18.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

Claims

1. A UV reverse varnish curing device for thin labels, characterized by: It includes a varnish box, a printing oiling assembly, a reversing roller assembly, and a UV light source; the printing oiling assembly includes an oil transfer roller, an anilox roller, an oiling roller, and a traction roller. The lower half of the oil transfer roller is located in the varnish box, the upper half of the oil transfer roller is tangent to the anilox roller, the other side of the anilox roller is tangent to the oiling roller, and the other side of the oiling roller is tangent to the traction roller. The ends of the shafts of the oil transfer roller, anilox roller, oiling roller, and traction roller are all equipped with transmission gears and are meshed and connected in sequence; the label paper passes between the oiling roller and the traction roller, and the label paper changes its conveying direction through the reversing roller assembly. After leaving the traction roller, the label paper first extends downward, then extends forward to form a loop area, and finally extends out from the rear side; A UV light source is provided in the loop area, and the UV light source faces the oiled surface of the label paper.

2. The UV reverse varnish curing equipment for thin labels according to claim 1 is characterized in that: The reversing roller assembly includes a first reversing roller and a second reversing roller. A first reversing roller is provided on the entry side of the traction roller, and the first reversing roller is located below the printing oiling assembly; a second reversing roller is provided on the exit side of the traction roller to change the conveying direction of the label paper to downward conveying, a third reversing roller is provided below the second reversing roller to convey the label paper to the front side, a fourth reversing roller is provided in front of the third reversing roller to convey the label paper downward again, and a fifth reversing roller is provided below the fourth reversing roller to convey the label paper to the rear side; a UV light source and a support plate are provided between the third reversing roller and the fourth reversing roller, and the UV light source and the support plate are respectively arranged on the upper and lower sides of the label paper.

3. The UV reverse varnish curing equipment for thin labels according to claim 2 is characterized in that: A feed buffer roller group is provided on the entry side of the first reversing roller. The feed buffer roller group includes a plurality of feed rollers that are staggered up and down. The label paper is wound around the plurality of feed rollers in sequence.

4. The UV reverse varnish curing equipment for thin labels according to claim 2 is characterized in that: A discharge buffer roller group is provided on the exit side of the fifth reversing roller. The discharge buffer roller group includes a plurality of discharge rollers that are staggered up and down. The label paper is wound around the plurality of discharge rollers in sequence.

5. The UV reverse varnish curing equipment for thin labels according to claim 1, characterized in that: An oil baffle is installed on the front side of the oil transfer roller. The front side of the oil baffle forms the oil inlet of the varnish box. The varnish box at the oil inlet is connected to an oil filling pipe and a valve.

6. The UV reverse varnish curing equipment for thin labels according to claim 1, characterized in that: An oil scraper is installed on the front side of the anilox roller. The oil scraper is fixed on the adjustment plate. Both ends of the adjustment plate are installed on the chassis platform through lifting adjustment screws.

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