Tipping paper cold perm device and cold perm method

Abstract

The present invention provides a cold-foil device and method for tipping paper. The cold-foil device includes a hot stamping foil drive module, a printing material drive module, a coating unit, a first and second embossing rollers arranged opposite each other, and a cooling roller and a holding roller arranged opposite each other. The hot stamping foil drive module is used to drive the hot stamping foil to pass through the first and cooling rollers in sequence, and the printing material drive module is used to drive the printing material to pass through the second and holding rollers in sequence. The coating unit is arranged upstream of the second embossing roller and directly opposite the side of the printing material closest to the hot stamping foil. The hot stamping foil and the printing material are in close contact between the first and second embossing rollers and between the cooling roller and the holding roller, respectively. The cooling roller has at least one closed linear cooling zone on its circumferential outer surface, which coincides with the boundary of the pattern applied by the coating unit. By providing a cooling roller, the present invention forms an internal stress zone at the edge of the hot stamping pattern, facilitating separation of the hot stamping foil and improving the quality of the pattern.

Description

Technical Field

[0001] The present invention relates to the field of printing technology, in particular to a cold stamping device and a cold stamping method for tipping paper. Background Art

[0002] Tipping paper is used for cigarette filter packaging. By hot stamping on the surface of the tipping paper, it can increase the aesthetics and also have a certain degree of anti-counterfeiting properties.

[0003] However, cigarette filters are relatively small, and the stamped area is relatively fine. This places new demands on stamping equipment and technology to achieve a good stamped appearance. Existing cold stamping techniques primarily utilize adhesives to bond stamping foil to achieve the desired effect. However, during the separation of the stamped pattern from the substrate, some of the foil adheres to the surrounding area of the stamped pattern on the tipping paper during the peeling process. This is especially true when the foil is thick or the pattern is intricate, leaving traces of foil at the edges and in the gaps of the pattern. This necessitates mechanical or manual cleaning operations, which can easily damage the pattern.

[0004] In view of this, how to improve the foil layer separation effect at the pattern boundary after cold foil transfer, or how to facilitate the cleaning of the foil layer at the pattern boundary has become one of the technical problems that need to be solved urgently. Summary of the Invention

[0005] In view of this, the present invention proposes a cold perm device and cold perm method for tipping paper, aiming to improve the cleanability of residual foil at the pattern boundary after cold perm of tipping paper, thereby reducing the difficulty of cold perm of tipping paper and improving the quality of cold perm.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a cold stamping device for tipping paper, comprising: a hot stamping foil driving module, a printing material driving module, a coating unit, a first embossing roller, a second embossing roller, a cooling roller and a holding roller. The first embossing roller and the second embossing roller are arranged parallel to each other and in rolling contact, the cooling roller and the holding roller are arranged parallel to each other and in rolling contact, the hot stamping foil driving module is used to drive the hot stamping foil to pass through the first embossing roller and the cooling roller in sequence, the printing material driving module is used to drive the printing material to pass through the second embossing roller and the holding roller in sequence, the coating unit is arranged upstream of the second embossing roller and facing the side of the printing material close to the hot stamping foil, and the hot stamping foil and the printing material are in contact with each other. When the material passes between the first embossing roller and the second embossing roller and between the cooling roller and the supporting roller, the surface is in close contact, thereby achieving the effect of cold stamping. At least one closed linear cooling area is provided on the circumferential outer surface of the cooling roller. The closed linear cooling area coincides with the boundary of the pattern coated by the coating unit. The closed linear cooling area cools the edge of the hot stamping foil bonding area. Since the cooling area is linear, internal stress will appear between the area where the line passes and the hot stamping foil connected to it due to different shrinkage. The stress area is more likely to break during the subsequent separation process of the hot stamping foil and the printing material. Therefore, it is conducive to fast travel and clear boundaries.

[0007] In some embodiments, the cooling roller includes a roller body, a first thermally conductive strip, an insulating pad, and a refrigeration device. The roller body is a cylindrical body. The first thermally conductive strip is embedded in the outer surface of the roller body and is flush with the surface of the roller body. At least a portion of the first thermally conductive strip passes through the roller body and protrudes from the inner surface of the roller body. The portion of the first thermally conductive strip located on the inner side of the roller body is connected to the refrigeration end of the refrigeration device. The refrigeration device is fixed to the inner side of the roller body through the insulating pad. The area where the closed linear frame formed by the first thermally conductive strip located on the outer surface of the roller body is located is the closed linear cooling area.

[0008] In some embodiments, the cooling roller further includes a heat insulating layer, and the heat insulating layer is disposed between the first heat conductive strip and the roller body.

[0009] In some embodiments, the surface of the first embossing roller is provided with at least one closed linear heating area, and the closed linear heating area coincides with the boundary of the pattern coated by the coating unit. The above-mentioned closed linear heating area is a closed ring, which can be an irregular closed ring, and the ring has the same shape and size as the boundary of the adhesive area pattern formed after coating by the coating unit.

[0010] In some embodiments, the first embossing roller includes a second roller body, a second thermally conductive strip and a heating device, wherein the second thermally conductive strip is embedded in the outer surface of the second roller body and is flush with the surface of the second roller body, the heating device is arranged on the inner side of the second roller body, at least a portion of the second thermally conductive strip is connected to the heating end of the heating device, and the area where the closed linear frame formed by the second thermally conductive strip located on the outer surface of the second roller body is located is the closed linear heating area.

[0011] In some embodiments, the closed linear frame formed by the axis of the first thermally conductive strip is the same size as the closed linear frame formed by the axis of the second thermally conductive strip, and the diameter of the first thermally conductive strip is smaller than the diameter of the second thermally conductive strip.

[0012] In some embodiments, a dehumidification unit is further included, and the dehumidification unit is used to dry the surface of the cooling roller.

[0013] In some embodiments, the dehumidification unit includes a drying roller and a hot air dryer, the surface of the drying roller is provided with a water-absorbing sponge, the drying roller is rollingly connected to the cooling roller, and the air outlet of the hot air dryer is arranged directly facing the surface of the drying roller.

[0014] In a second aspect, the present invention further provides a method for cold-ironing tipping paper, comprising the following steps:

[0015] The hot stamping foil driving module drives the hot stamping foil to unfold and move, and the printing material driving module drives the printing material to unfold and move. Before the printing material enters between the first embossing roller and the second embossing roller, the coating unit coats the adhesive on the surface of the printing material.

[0016] The printing material and the hot stamping foil enter between the first and second embossing rollers. Under the pressure of the first and second embossing rollers, the hot stamping foil sticks to the adhesive.

[0017] The printing material with hot stamping foil attached enters between the cooling roller and the holding roller. The closed linear cooling area on the cooling roller surface contacts and cools the hot stamping foil surface at the edge of the adhesive. The local temperature difference causes stress concentration areas on the hot stamping foil surface.

[0018] The hot stamping foil drive module drives the hot stamping foil to be rolled up after cold stamping, and the printing material drive module drives the printing material to be rolled up after cold stamping. At this time, the hot stamping foil attached to the surface of the printing material is separated from part of the hot stamping foil substrate, completing the cold stamping.

[0019] In some embodiments, a closed linear heating area is provided on the surface of the first embossing roller, and when the printing material and the hot stamping foil enter between the first embossing roller and the second embossing roller, the closed linear heating area heats the surface of the hot stamping foil at the edge of the adhesive.

[0020] The tipping paper cold-ironing device and cold-ironing method of the present invention have the following beneficial effects compared with the prior art:

[0021] The tipping paper cold stamping device of the present invention locally cools the edge of the hot stamping pattern after cold stamping by adding a cooling roller for local cooling, and utilizes the shrinkage effect brought about by the local temperature difference during cooling to generate internal stress on the surface of the hot stamping foil along the edge of the hot stamping pattern. Under the action of the internal stress, these stress action areas are more likely to break when the hot stamping foil is separated from the printing material. Therefore, providing a closed linear cooling area identical to the boundary of the cold stamping pattern can ensure that the boundary of the pattern has a better separation effect during the separation of the hot stamping foil from the printing material after cold stamping, reduce the amount of residual hot stamping foil at the boundary of the pattern, reduce the difficulty of post-processing, and improve the quality of the cold stamping pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0023] Figure 1 Schematic diagram of the structure of the tipping paper cold stamping device according to some embodiments of the present invention;

[0024] Figure 2 An axonometric view of a cooling roller in a tipping paper cold foiling device according to some embodiments of the present invention;

[0025] Figure 3 for Figure 2 Exploded diagram;

[0026] Figure 4 A cross-sectional view of a cooling roller in a tipping paper cold-ironing device according to some embodiments of the present invention;

[0027] Figure 5 A cross-sectional view of a first embossing roller in a tipping paper cold foiling device according to some embodiments of the present invention;

[0028] Figure 6 for Figure 4 A partial enlarged view of part A;

[0029] Figure 7 A partially enlarged view of the working state of the cooling roller and the abutting roller in the tipping paper cold-ironing device according to some embodiments of the present invention;

[0030] Figure 8 It is a partially enlarged view of the working status of the first embossing roller and the second embossing roller in the tipping paper cold stamping device of some embodiments of the present invention.

[0031] In the figure: 1- hot stamping foil drive module, 2- printing material drive module, 3- coating unit, 4- first embossing roller, 5- second embossing roller, 6- cooling roller, 7- holding roller, 8- hot stamping foil, 9- printing material, 10- closed linear cooling area, 11- pattern, 12- closed linear heating area, 13- dehumidification unit, 41- second roller body, 42- second heat conductive strip, 43- heating device, 61- roller body, 62- first heat conductive strip, 63- heat insulating pad, 64- refrigeration device, 65- heat insulating layer, 131- drying roller, 132- hot air dryer, 133- absorbent sponge. DETAILED DESCRIPTION

[0032] The following will be combined with 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.

[0033] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the present invention belong. If the definitions set forth in this section are contrary to or otherwise inconsistent with definitions set forth in the patents, patent applications, published patent applications, and other publications incorporated herein by reference, the definitions listed in this section take precedence over the definitions incorporated herein by reference.

[0037] like Figure 1 As shown, combined Figure 2-8 As shown, a cold stamping device for tipping paper of one embodiment of the present invention includes: a hot stamping foil driving module 1, a printing material driving module 2, a coating unit 3, a first embossing roller 4, a second embossing roller 5, a cooling roller 6 and a holding roller 7, wherein the hot stamping foil driving module 1 includes at least a unwinding roller and a winding roller, the coil of the hot stamping foil 8 is unwound from the unwinding roller and finally wound up on the winding roller, the printing material driving module 2 includes at least a unwinding roller and a winding roller, the coil of the printing material 9 is unwound from the unwinding roller and finally wound up on the winding roller, the hot stamping foil 8 passes through the surface of the first embossing roller 4 and the surface of the cooling roller 6 in sequence from unwinding to winding, the printing material 9 passes through the surface of the second embossing roller 5 and the surface of the holding roller 7 in sequence from unwinding to winding, and at the same time, a coating unit 3 is also provided between the unwinding position of the printing material 9 and the second embossing roller 5, and the coating unit 3 is used to apply pressure to the printing material 9 close to the second embossing roller Adhesive is coated on one side of the hot stamping foil 8, and a pattern 11 is formed on the surface of the printing material 9 after the adhesive is coated. The first embossing roller 4 and the second embossing roller 5 are parallel to each other and in rolling contact with each other. Between the first embossing roller 4 and the second embossing roller 5, the hot stamping foil 8 and the surface of the printing material 9 are pressed against each other, thereby realizing the cold stamping treatment of the hot stamping foil 8. Between the cooling roller 6 and the supporting roller 7, the hot stamping foil 8 and the surface of the printing material 9 are pressed against each other again. At the same time, a closed linear cooling area 10 is arranged on the outer surface of the cooling roller 6, which is aligned with the side of the hot stamping foil 8 away from the printing material 9 where the pattern 11 is located. The closed linear cooling area 10 cools the hot stamping foil 8 at the edge of the pattern 11. The linear cooling area causes internal stress to appear at the position of the linear contact. When the hot stamping foil 8 and the printing material 9 leave the cooling roller 6 and separate, the area where the internal stress is located is more likely to break.

[0038] In the above embodiment, a closed linear cooling area 10 having a corresponding shape is used to cool the boundary of the cold-stamped pattern 11, thereby forming a stress area that is consistent with the boundary position of the pattern 11. This stress area is preferentially broken during the separation process of the hot stamping foil 8, thereby forming a more neat boundary of the pattern 11. This avoids the problem of flash caused by inconsistent breaking effects of the hot stamping foil 8 at the boundary of the pattern 11 during conventional cold stamping, thereby reducing the difficulty of post-processing and improving the quality of the cold-stamped pattern.

[0039] In some embodiments, the cooling roller 6 includes a roller body 61, a first thermally conductive strip 62, an insulation pad 63 and a refrigeration device 64. The roller body 61 is a cylindrical body. The first thermally conductive strip 62 is embedded in the outer surface of the roller body 61. At the same time, the surface of the first thermally conductive strip 62 is flush with the surface of the roller body 61. At least a portion of the first thermally conductive strip 62 close to the inner side of the roller body 61 passes through the roller body 61 and protrudes from the inner surface of the roller body 61, and the protruding portion is connected to the cooling end of the refrigeration device 64. The refrigeration device 64 is arranged on the inner side of the roller body 61, and an insulation pad 63 is arranged between the refrigeration device 64 and the roller body 61. The cooling end of the refrigeration device 64 cools and can be transferred to the first thermally conductive strip 62.

[0040] In the above embodiment, the first heat-conducting strip 62 can be made of a good thermal conductor material, such as copper, aluminum, silver, gold or their corresponding alloys. After the refrigeration device 64 cools, the cold energy is transferred to the first heat-conducting strip 62. The first heat-conducting strip 62 is enclosed on the surface of the roller body 61 to form a closed linear cooling area. When the linear cooling area contacts the hot stamping foil 8, the surface of the hot stamping foil 8 is locally cooled. The local cooling causes local stress concentration on the surface of the hot stamping foil. In the subsequent separation process of the hot stamping foil 8, the stress concentration area is more likely to break, thereby forming a controllable boundary. During the actual cold stamping process, the closed linear cooling area enclosed by the first heat-conducting strip 62 corresponds to the boundary of the pattern 11 formed by the coating unit 3 on the surface of the printing material 9.

[0041] In some embodiments, in order to achieve good local cooling, the cooling end of the cooling device 64 needs to avoid contact with the surface of the roller body 61. The cooling device 64 and the roller body 61 are spaced apart by a thermal insulation pad 63, which can effectively avoid cooling on the surface of the roller body 61. At this time, relatively speaking, only the exposed area of the first thermal conductive strip 62 has a significant cooling effect, so good local cooling can be achieved, thereby forming a stress concentration effect on the surface of the hot stamping foil 8.

[0042] In some embodiments, a heat insulation layer 65 is further included, and the heat insulation layer 65 is disposed between the first heat conductive strip 62 and the roller body 61 .

[0043] In the above embodiment, in order to further improve the local cooling effect of the first thermally conductive strip 62, it is necessary to avoid as much as possible the transfer of cold energy on the surface of the first thermally conductive strip 62 to the adjacent roller body 61. Therefore, a thermal insulation layer 65 is provided in the area between the first thermally conductive strip 62 and the roller body 61. On the one hand, the thermal insulation layer 65 can reduce the loss of cold energy of the first thermally conductive strip 62 and improve the heat preservation effect of the first thermally conductive strip 62; on the other hand, the thermal insulation layer 65 can also reduce the first thermally conductive strip 62 from cooling the nearby roller body 61. The greater the temperature difference between the roller body 61 adjacent to the first thermally conductive strip 62 and the first thermally conductive strip 62, the stronger the internal stress effect on the surface of the hot stamping foil 8. Therefore, it is necessary to increase the temperature difference between the two as much as possible. The thermal insulation layer 65 can be made of a material with good thermal insulation effect, such as rubber, foam, aerogel, etc.

[0044] In some embodiments, at least one closed linear heating area 12 is provided on the surface of the first pressing roller 4 , and the closed linear heating area 12 coincides with the boundary of the pattern 11 coated by the coating unit 3 .

[0045] In the above embodiment, in order to further increase the temperature difference of the cooling area during local cooling of the first heat conductive strip 62 and increase the internal stress of the hot stamping foil 8, a closed linear heating area 12 can be provided on the surface of the first pressing roller 4. Before entering the cooling roller 6 for cooling and lowering the temperature, the part to be cooled is heated. The heating area can be located on the side of the cooling area or the heating area can be larger than the cooling area. At this time, during cooling and lowering, the periphery of the cooling area has a heated high-temperature area, thereby forming a larger temperature difference.

[0046] In some embodiments, the first embossing roller 4 also includes a second roller body 41, a second thermal conductive strip 42 and a heating device 43. The second thermal conductive strip 42 is embedded in the outer surface of the second roller body 41 and is flush with the outer surface of the second roller body 41. The heating device 43 is arranged on the inner side of the second roller body 41. At least a portion of the second thermal conductive strip 42 is connected to the heating end of the heating device 43. The area where the closed linear frame formed by the second thermal conductive strip 42 located on the outer surface of the second roller body 41 is located is the closed linear heating area 12.

[0047] In the above embodiment, the first embossing roller 4 adopts a structure similar to that of the cooling roller 6, and the second heat-conducting strip 42 is used to generate heat, thereby preheating the area that needs to be cooled down later, and increasing the temperature difference between the cooling area and the surrounding hot stamping foil 8 after cooling down. Unlike the cooling roller 6, there is no need to set a heat-insulating pad structure in the first embossing roller 4, and there is no need to set a heat-insulating layer on the outside of the second heat-conducting strip 42. Since the purpose of heating is to increase the local temperature difference after cooling down, the heated area is not particularly limited. However, as a preferred embodiment, a corresponding heat-insulating pad can also be set on the first embossing roller 4 to isolate the second roller body 41 from the heating device 43, and a corresponding heat-insulating layer can also be set on the outside of the second heat-conducting strip 42, so as to improve the concentration effect of the heating area of the second heat-conducting strip 42.

[0048] In some embodiments, the closed linear frame formed by the axes of the first thermally conductive strip 62 and the closed linear frame formed by the second thermally conductive strip 42 are of the same size, and the diameter of the first thermally conductive strip 62 is smaller than that of the second thermally conductive strip 42 .

[0049] In the above embodiment, the linear area formed after the second heat-conducting strip 42 is heated has a larger linear width. At this time, the area where the first heat-conducting strip 62 is cooled is located on the inner side of the heating area of the second heat-conducting strip 42, thereby forming a regional structure with high temperature on both sides and low temperature in the middle. At this time, the high-temperature area expands to the largest size, and the low-temperature area shrinks to the smallest size, thereby forming a strong internal stress in the middle shrinkage area, and the temperature drop in this area is within a relatively concentrated range, and the stress effect is obvious. During the separation process of the hot stamping foil 8, a significant fracture boundary can be formed, thereby improving the separation uniformity of the hot stamping pattern boundary.

[0050] In some embodiments, a dehumidification unit 13 is further included, and the dehumidification unit 13 is used to perform a dehumidification and drying process on the surface of the cooling roller 6 .

[0051] In the above embodiment, since the temperature of some areas on the surface of the cooling roller 6 is relatively low, cooling water is easily generated. The cooling water may have an unnecessary quality impact on the hot stamping foil 8, or ice may form on the surface of the cooling roller 6, affecting the rolling effect. Therefore, a dehumidification unit 13 is provided to dry and dehumidify the surface of the cooling roller 6 to keep the surface of the cooling roller 6 dry at all times.

[0052] In some embodiments, the dehumidification unit 13 includes a drying roller 131 and a hot air dryer 132. The surface of the drying roller 131 is provided with a water-absorbing sponge 133. The drying roller 131 and the cooling roller 6 are parallel to each other and connected in a rolling manner on the surface. The air outlet of the hot air dryer 132 is arranged directly opposite the water-absorbing sponge 133 on the surface of the drying roller 131.

[0053] In the above embodiment, the absorbent sponge 133 is used to absorb the condensed water formed on the surface of the cooling roller 6 in a timely manner. After the absorbent sponge 133 absorbs the condensed water, it is dried with hot air in the hot air dryer 132 to remove the moisture in the absorbent sponge 133.

[0054] A cold-ironing method for tipping paper according to an embodiment of the present invention comprises the following steps:

[0055] Driven by the printing material drive module 2, the tipping paper roll is unwound and passes sequentially through the coating unit 3, the surface of the second embossing roller 5 near the first embossing roller 4, and the surface of the abutting roller 7 near the cooling roller 6. While passing through the coating unit 3, the coating unit 3 prints a ball of adhesive on the surface of the tipping paper near the hot stamping foil 8. Driven by the hot stamping foil drive module 1, the hot stamping foil 8 roll is unwound and passes through the surface of the first embossing roller 4 near the second embossing roller 5, and the surface of the cooling roller 6 near the abutting roller 7. Between the first embossing roller 4 and the second embossing roller 5, the closed linear heating area 12 located on the surface of the first embossing roller 4 heats the edge of the hot stamping foil 8 bonded to the adhesive pattern 11, and embosses at the same time to achieve the purpose of cold stamping. The bonded hot stamping foil 8 and the corresponding tipping paper are continued to be transported to between the cooling roller 6 and the supporting roller 7. At this time, the closed linear cooling area 10 on the surface of the cooling roller 6 cools the edge of the hot stamping foil 8 bonded to the adhesive pattern 11. A temperature difference is formed between the cooled area and the surrounding area, thereby generating internal stress. Then, driven by the hot stamping foil driving module 1 and the printing material driving module 2, the hot stamping foil 8 is separated from the tipping paper, and the edge area of the pattern 11 is preferentially broken and separated under the action of the internal stress, thereby forming a pattern of the hot stamping foil 8 on the surface of the tipping paper. The edge of the pattern is cleaned continuously, and there is basically no residual hot stamping foil 8.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tipping paper cold perm device, characterized in that: include: The hot stamping foil drive module, the printing material drive module, the coating unit, the first embossing roller, the second embossing roller, the cooling roller and the holding roller, the first embossing roller and the second embossing roller are arranged opposite to each other and in rolling contact, the cooling roller and the holding roller are arranged opposite to each other and in rolling contact, the hot stamping foil drive module is used to drive the hot stamping foil to unfold and pass through the first embossing roller and the cooling roller in sequence before winding up, the printing material drive module is used to drive the printing material to unfold and pass through the second embossing roller and the holding roller in sequence before winding up, the coating unit is arranged upstream of the second embossing roller and is directly opposite to the printing material close to the hot stamping foil. On one side, the hot stamping foil and the printing material are in close contact between the first embossing roller and the second embossing roller, and between the cooling roller and the abutting roller, respectively. The circumferential outer surface of the cooling roller is provided with at least one closed linear cooling area, and the closed linear cooling area coincides with the boundary of the pattern coated by the coating unit. The cooling roller comprises a roller body, a first heat-conducting strip, a heat-insulating pad, a refrigeration device and a heat-insulating layer. The roller body is a cylindrical cylinder. The first heat-conducting strip is embedded in the outer surface of the roller body and is flush with the surface of the roller body. At least a portion of the first heat-conducting strip passes through the roller body and protrudes from the inner side of the roller body. The surface of the first heat-conducting strip is connected to the cooling end of the refrigeration device, and the refrigeration device is fixed to the inside of the roller body through an insulation pad. The area where the closed linear frame formed by the first heat-conducting strip on the outer surface of the roller is located is a closed linear cooling area. The insulation layer is arranged between the first heat-conducting strip and the roller body. The surface of the first embossing roller is provided with at least one closed linear heating area, and the closed linear heating area coincides with the boundary of the pattern coated by the coating unit. The first embossing roller includes a second roller body, a second heat-conducting strip and a heating device. The second heat-conducting strip is embedded in the outer surface of the second roller body and is flush with the surface of the second roller body. The heating device is arranged on the inner side of the second roller body. At least a part of the second heat-conducting strip is connected to the heating end of the heating device. The area where the closed linear frame formed by the second heat-conducting strip on the outer surface of the second roller is located is a closed linear heating area. The closed linear frame formed by the axis of the first heat-conducting strip is the same size as the closed linear frame formed by the axis of the second heat-conducting strip, and the diameter of the first heat-conducting strip is smaller than the diameter of the second heat-conducting strip.

2. The tipping paper cold perm device according to claim 1, characterized in that: The cooling roller further comprises a dehumidification unit for drying the surface of the cooling roller.

3. The tipping paper cold perm device according to claim 2, characterized in that: The dehumidification unit includes a drying roller and a hot air dryer. The surface of the drying roller is provided with a water-absorbing sponge. The drying roller is rollingly connected to the cooling roller. The air outlet of the hot air dryer is arranged facing the surface of the drying roller.

4. A cold ironing method for tipping paper, characterized in that: The tipping paper cold stamping device according to any one of claims 1 to 3 is used for cold stamping, comprising the following steps: The hot stamping foil driving module drives the hot stamping foil to unfold and move, and the printing material driving module drives the printing material to unfold and move. Before the printing material enters between the first embossing roller and the second embossing roller, the coating unit coats the adhesive on the surface of the printing material. A closed linear heating area is provided on the surface of the first embossing roller. The printing material and the hot stamping foil enter between the first and second embossing rollers. The closed linear heating area heats the surface of the hot stamping foil at the edge of the adhesive. Under the pressure of the first and second embossing rollers, the hot stamping foil adheres tightly to the adhesive. The printing material with the hot stamping foil attached enters between the cooling roller and the holding roller. The closed linear cooling area on the cooling roller surface contacts the hot stamping foil surface at the edge of the adhesive and cools it down. The hot stamping foil drive module drives the hot stamping foil to be rolled up after cold stamping, and the printing material drive module drives the printing material to be rolled up after cold stamping. At this time, the hot stamping foil attached to the surface of the printing material is separated from part of the hot stamping foil substrate, completing the cold stamping.

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