Safety film ceramic roller

Abstract

The safety film ceramic roller comprises an anilox roller body, a center through shaft is arranged on the anilox roller body in the axial direction of the anilox roller body in a penetrating mode, a plurality of through holes are formed in the surface of the center through shaft, and a cold conduction medium is introduced into the center through shaft; the hole diameter of the through holes is gradually increased in the axial direction of the center through shaft, and the hole diameter of the through hole close to the cold conduction oil inlet is smaller than the hole diameter of the through hole far away from the cold conduction oil inlet. According to the invention, the remaining amount of the shielding oil on the surface of the anilox roller can be effectively increased, the waste of the shielding oil can be reduced, the problem of abnormal pollution of products can be reduced, the uniformity of the surface temperature of the ceramic anilox roller can be ensured, and the printing effect can be further ensured while the waste of the shielding oil is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of thin film coating, and in particular relates to a safety film ceramic roller. Background Art

[0002] The safety film ceramic anilox roller plays the role of transferring shielding oil in the safety film system. The working principle is to vaporize the shielding oil by heating it in a vacuum environment. The vaporized oil vapor condenses on the surface of the ceramic anilox roller and enters the mesh holes on the ceramic anilox roller for storage. It is kept in the mesh holes by its tension. When it contacts the resin plate on the plate roller, the shielding oil is transferred to the part with graphics on the resin plate (i.e., the protruding dots), and then pressed onto the film by the plate roller and the pressure roller to complete the printing of the safety film.

[0003] In the related art, when the shielding oil is heated, vaporized and cooled on the surface of the ceramic anilox roller, the shielding oil is easily vaporized, resulting in a reduction in the shielding oil on the surface of the ceramic anilox roller, which can easily cause abnormal contamination of the product and a reduction in the printing effect. Summary of the invention

[0004] The purpose of the present invention is to provide a safety film ceramic roller to solve the problems in the prior art.

[0005] To this end, the present invention provides a safety film ceramic roller, comprising: An anilox roller body, wherein the anilox roller body is provided with a central through-shaft along its axial direction, a plurality of through-holes are provided on the surface of the central through-shaft, and a cooling medium is passed through the central through-shaft; The aperture of the through hole gradually increases along the axial direction of the central through axis, wherein the aperture of the through hole close to the cooling oil inlet position is smaller than the aperture of the through hole far from the cooling oil inlet position; When in use, the cooling oil enters the interior of the central through-shaft from the cooling oil inlet, and is transferred along the through hole to the inner surface of the anilox roller body, so as to achieve uniform cooling of the anilox roller body.

[0006] As a further description of the above technical solution, a rotary sealing device is provided at one end of the anilox roller body, the interior of the rotary sealing device is connected to a cooling oil return port, and the cooling oil inlet is connected to the central through shaft.

[0007] As a further description of the above technical solution, the cooling oil return port and the cooling oil inlet are both connected to a cooling system, and the cooling system is used to circulate the cooling oil into the central through shaft.

[0008] As a further description of the above technical solution, the cooling system includes a heat exchanger connected to the cooling oil return port and the cooling oil inlet, the heat exchanger is connected to a storage tank, and a circulating pump is provided at the upper end of the storage tank.

[0009] As a further description of the above technical solution, the inner diameter of the anilox roller body gradually decreases from one end close to the cooling oil inlet to the other end, and when the cooling oil in the through hole is transferred to the inner wall of the anilox roller body, the amount of oil transferred by the larger through hole per unit time is greater than the amount of oil transferred by the smaller through hole per unit time.

[0010] As a further description of the above technical solution, the shape of the through hole includes any one of a circle, a square, a triangle or a diamond.

[0011] As a further description of the above technical solution, the spacing between adjacent through holes distributed axially upward along the central through axis gradually increases.

[0012] Beneficial effects: 1. The present invention provides a safety film ceramic roller, which can effectively increase the amount of shielding oil retained on the surface of the anilox roller by arranging a central through-shaft inside the anilox roller and introducing a cooling medium into the interior of the anilox roller through the central through-shaft to cool the anilox roller, thereby reducing the waste of shielding oil and the problem of abnormal product contamination. In addition, by opening a plurality of through holes in the axial direction of the central through-shaft, and gradually increasing the aperture of the through hole away from the inlet of the cooling oil, the larger the aperture, the greater the flow rate of the shielding oil, thereby ensuring the uniformity of the surface temperature of the ceramic anilox roller, reducing the waste of shielding oil and further ensuring the printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic structural diagram of a safety film ceramic roller provided by the present invention.

[0015] Figure 2 A cross-sectional view of a safety film ceramic roller provided by the present invention.

[0016] Figure 3 A three-dimensional diagram of a cooling system provided by the present invention; Figure 4 An internal schematic diagram of the cooling system provided by the present invention.

[0017] In the figure: 1. anilox roller body; 2. center through shaft; 3. through hole; 4. rotary sealing device; 5. cooling oil inlet; 6. cooling oil return port; 7. heat exchanger; 8. storage tank; 9. circulation pump; 10. housing. DETAILED DESCRIPTION

[0018] The content of the present invention can be more easily understood by selecting the following detailed description of the preferred implementation method of the present invention and the embodiments included. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art to which the present invention belongs. When there is a conflict, the definition in this specification shall prevail.

[0019] The present invention provides a safety film ceramic roller, which solves the problem in the prior art that the amount of shielding oil retained on the surface is reduced, causing abnormal contamination of the product. In order to solve this problem, it is necessary to increase the temperature of the shielding oil heater so that more shielding oil can be retained on the surface of the ceramic anilox roller. However, as the temperature of the shielding oil heater increases, although the amount of shielding oil retained on the ceramic anilox roller can be increased to a certain extent, the increase in the temperature of the shielding oil heater leads to an increase in the amount of shielding oil that is vaporized and not attached to the ceramic anilox roller, which in turn further leads to a waste of shielding oil.

[0020] The technical concept of the present application is that, by providing a central shaft 2 inside the anilox roller, a cooling medium is introduced into the interior of the anilox roller through the central shaft 2 to cool the anilox roller, which can effectively increase the amount of shielding oil retained on the surface of the anilox roller, reduce the waste of shielding oil, and reduce the problem of abnormal product contamination. However, it is found in actual applications that due to the temperature of the anilox roller itself, the temperature of the cooling medium will change after entering the central shaft 2, resulting in inconsistent temperature on the surface of the anilox roller, affecting the printing effect. In order to solve this problem, the present application opens a plurality of through holes 3 in the axial direction of the central shaft 2, and the aperture of the through hole 3 away from the cooling oil inlet 5 gradually increases. The larger the aperture, the greater the flow rate of the shielding oil, thereby ensuring the uniformity of the surface temperature of the ceramic anilox roller, reducing the waste of shielding oil and further ensuring the printing effect.

[0021] Specifically in conjunction with the following embodiments: like Figure 1-2 As shown, a safety film ceramic roller comprises an anilox roller body 1, wherein the anilox roller body 1 is provided with a central through-shaft 2 along its axial direction, a plurality of through-holes 3 are provided on the surface of the central through-shaft 2, a cooling medium is passed through the central through-shaft 2, and in some embodiments, the cooling medium may be cooling oil, through which the heat in the anilox roller body 1 can be taken away, thereby realizing cooling of the anilox roller body 1; The aperture of the through hole 3 gradually increases along the axial direction of the central through shaft 2, wherein the aperture of the through hole 3 near the position of the cooling oil inlet 5 is smaller than the aperture of the through hole 3 far away from the position of the cooling oil inlet 5, and the flow rate of the cooling oil sprayed by the through hole 3 with a larger aperture is greater than the flow rate of the cooling oil sprayed by the through hole 3 with a smaller aperture. As the central through shaft 2 goes deeper, the temperature of the cooling oil inside it will also increase to a certain extent. Therefore, by increasing the flow rate of the cooling oil sprayed by the through hole 3, the temperature of the anilox roller body 1 at the other end can be effectively cooled down; When in use, the cooling oil enters the center through-shaft 2 from the cooling oil inlet 5 and is transferred to the inner surface of the anilox roller body 1 along the through hole 3 to achieve uniform cooling of the anilox roller body 1 .

[0022] Optionally, a rotary sealing device 4 is provided at one end of the anilox roller body 1, and the interior of the rotary sealing device 4 is connected to a cooling oil return port 6, and the cooling oil inlet 5 is connected to the center through shaft 2. By providing the rotary sealing device 4, the cooling oil can be effectively prevented from leaking from the gap between the shaft and the housing 10, thereby effectively improving the sealing performance. At the same time, the rotary sealing device 4 can ensure lubrication and reduce wear.

[0023] Alternatively, if Figure 3-4 As shown, the cooling oil return port 6 and the cooling oil inlet port 5 are both connected to the cooling system. The cooling system is used to circulate the cooling oil into the center shaft 2. The cooling oil inlet port 5, the cooling oil return port 6, the center shaft 2 and the cooling system together constitute a cooling oil circulation system. Specifically, the cooling oil takes away the heat in the anilox roller body 1 and then circulates to the cooling system, thereby realizing the reuse of the cooling oil.

[0024] Alternatively, if Figure 3-4 As shown, the cooling system includes a shell 10, in which a heat exchanger 7 connected to a cooling oil return port 6 and a cooling oil inlet 5 is arranged, and the heat exchanger 7 is connected to a storage tank 8 storing cooling oil, and a circulating pump 9 is arranged at the upper end of the storage tank 8. The cooling oil in the storage tank 8 can be pumped into the anilox roller body 1 through the circulating pump 9, and the cooling oil refluxed from the cooling oil return port 6 is cooled again through the heat exchanger 7 for repeated use.

[0025] Optionally, in some embodiments, the inner diameter of the anilox roller body 1 gradually increases from one end close to the cooling oil inlet 5 to the other end, and when the cooling oil in the through hole 3 is transferred to the inner wall of the anilox roller body 1, the amount of oil transferred per unit time by the larger through hole 3 is greater than the amount of oil transferred per unit time by the smaller through hole 3. When the length of the anilox roller is long, the temperature of the cooling oil at a position farther away from the cooling oil inlet 5 is higher, so the flow rate of the guide oil to be sprayed is larger, which to a certain extent will cause the weight of the left and right ends inside the anilox roller body 1 to be inconsistent, affecting the stability during rotation. By making the inner diameter of the anilox roller body 1 larger as it is farther away from the cooling oil inlet 5, the cooperation between the anilox roller body 1 and the cooling oil can keep the stability of the anilox roller body 1 during operation. At the same time, the larger the inner diameter of the anilox roller body 1, the smaller its thickness, and it is easier to transfer the cooling amount of the cooling oil to the surface of the anilox roller body 1, reducing the influence of the increase in the temperature of the cooling oil on the cooling effect.

[0026] Optionally, the shape of the through hole 3 is any one of regular shapes such as circle, square, triangle or diamond, which can be selected according to actual needs and circumstances and is not limited here.

[0027] Optionally, in some embodiments, the spacing between adjacent through holes 3 distributed axially along the center through shaft 2 gradually decreases, which can increase the flow rate of the cooling oil at the right end of the center through shaft 2 and effectively reduce the impact of the increase in the cooling oil temperature on the cooling effect.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety film ceramic roller, characterized in that: It comprises an anilox roller body, wherein the anilox roller body is provided with a central through-shaft along its axial direction, a plurality of through-holes are opened on the surface of the central through-shaft, and a cooling medium is passed into the central through-shaft; The aperture of the through hole gradually increases along the axial direction of the central through axis, wherein the aperture of the through hole close to the cooling oil inlet position is smaller than the aperture of the through hole far from the cooling oil inlet position; When in use, the cooling oil enters the interior of the central through-shaft from the cooling oil inlet, and is transferred along the through hole to the inner surface of the anilox roller body, so as to achieve uniform cooling of the anilox roller body.

2. The safety film ceramic roller according to claim 1, characterized in that: A rotary sealing device is arranged at one end of the anilox roller body, the interior of the rotary sealing device is connected with a cooling oil return port, and the cooling oil inlet is connected with the central through shaft.

3. The safety film ceramic roller according to claim 2, characterized in that: The cooling oil return port and the cooling oil inlet are both connected to a cooling system, and the cooling system is used to circulate the cooling oil into the central through shaft.

4. The safety film ceramic roller according to claim 3, characterized in that: The cooling system comprises a heat exchanger connected to the cooling oil return port and the cooling oil inlet, the heat exchanger is connected to a storage tank, and a circulation pump is arranged at the upper end of the storage tank.

5. The safety film ceramic roller according to claim 4, characterized in that: The inner diameter of the anilox roller body gradually decreases from one end close to the cooling oil inlet to the other end. When the cooling oil in the through hole is transferred to the inner wall of the anilox roller body, the amount of oil transferred by the larger through hole per unit time is greater than the amount of oil transferred by the smaller through hole per unit time.

6. The safety film ceramic roller according to claim 5, characterized in that: The shape of the through hole includes any one of circular, square, triangular or rhombus.

7. The safety film ceramic roller according to claim 6, characterized in that: The spacing between adjacent through holes distributed axially upward along the central through axis gradually increases.

Images