Adjustable sectional type four-edge freeze-frame embossing device for paper for daily use

Abstract

The utility model discloses an adjustable sectional type four-edge freeze-frame embossing device for household paper, which consists of a transverse edge embossing roller group and a vertical edge embossing roller group which are respectively responsible for forming transverse edge and vertical edge patterns on raw paper, the transverse edge embossing roller group comprises a transverse edge embossing main roller and a transverse edge embossing auxiliary roller, and the transverse edge embossing main roller and the vertical edge embossing auxiliary roller are respectively responsible for forming transverse edge patterns and vertical edge patterns on the raw paper. At least two transverse edge patterns can be formed; the vertical edge embossing roller set comprises a vertical edge embossing main roller and at least two vertical edge embossing auxiliary rollers with the adjustable axial distance, at least two vertical edge patterns can be formed, the patterns are arranged in a staggered mode and freeze-frame to form at least one four-edge grid pattern, and the distance between the adjacent vertical edge patterns can be adjusted by adjusting the axial distance between the vertical edge embossing auxiliary rollers, so that the vertical edge patterns are formed. Besides, transverse edge and vertical edge pattern protrusions of different forms can be formed on the roller surfaces of the transverse edge embossing roller and the vertical edge embossing roller so as to meet different embossing requirements, and the device has the advantages of being adjustable in distance, simple in structure and high in production efficiency and can flexibly meet the production requirements of embossed paper products of different specifications.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of paper towel mechanical production, and specifically relates to a device for embossing treatment of household paper, which can form four-side fixed embossing effect with beautiful patterns on the base paper through adjustable segmented design. BACKGROUND

[0002] In the field of household paper, paper products are an indispensable part of our daily life, and their quality and appearance design are gradually becoming important factors for consumers to consider when choosing. From napkin paper, toilet paper to facial tissue paper, these seemingly ordinary products often bring unexpected surprises through innovation in details. Among them, embossing technology as an important means to improve the quality and aesthetics of household paper is particularly worth paying attention to in terms of its development history and market demand changes.

[0003] The existing double-sided embossing and four-sided embossing are two common forms of household paper embossing technology, each having some characteristics and limitations.

[0004] Specifically, double-sided embossing, which is a process of embossing only on both sides of the paper, can improve the aesthetics and touch of the paper to some extent, but its disadvantages are also obvious: 1) single visual effect: since the embossing pattern is only distributed on both sides of the paper, the overall visual effect is relatively single and lacks depth, and in situations where embossing effect needs to be fully displayed, double-sided embossing may not be good enough, 2) double-sided embossing may be more suitable for some specific decoration or packaging scenarios, but in situations where embossing effect needs to be fully displayed or the overall beauty of the paper needs to be emphasized (such as high-end restaurant napkin paper, gift wrapping paper, etc.), single-sided embossing may not be sophisticated and high-end enough, 3) double-sided embossed paper products are prone to spread at the other two sides without embossing, and the layering and compounding effect is not good.

[0005] In particular, the four-edge embossing process, which embosses the four edges of the paper, has some unique features and advantages, but also has some limitations: 1) high aesthetic: four-edge embossing can improve the overall aesthetic of the paper, making it look more delicate and high-end, the embossed pattern is usually distributed on the four edges of the paper, forming a unique border effect, enhancing the three-dimensional effect of the paper, 2) fixed specifications: traditional four-edge embossing devices often use fixed embossing roller group designs, which limit the flexibility of producers in responding to different market demands, 3) high cost: because traditional four-edge embossing devices need to equip each specification of embossed pattern with a special embossing roller group, producers need to bear high cost when changing or upgrading embossed patterns, 4) limited production efficiency: when producing different specifications of embossed paper products, traditional four-edge embossing devices may need to replace the entire embossing roller group or perform tedious adjustment work, which will affect production efficiency and increase production cycle.

[0006] In summary, single-edge embossing and traditional four-edge embossing each have their own characteristics and limitations, in order to overcome these limitations and meet market changes and consumer demand, producers need to continuously explore and innovate embossing technology, for example, develop embossing devices with higher flexibility and customizability. Content of the utility model

[0007] The utility model aims at overcoming the deficiency of prior art, provides a kind of adjustable segmented four-edge fixed embossing device of life paper, through the combination design of horizontal edge embossing roller group and vertical edge embossing roller group, and the adjustable of the axial spacing between vertical edge embossing vice roller, realize the staggered arrangement and fixed of horizontal edge pattern and vertical edge pattern on raw paper, form the beautiful four-edge lattice pattern, simultaneously can adjust the spacing of vertical edge pattern according to need.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a kind of adjustable segmented four-side fixed grid embossing device of life paper, including the horizontal edge embossing roller group and vertical edge embossing roller group that can be arranged and supply original paper continuously through including the horizontal edge embossing main roller and horizontal edge embossing auxiliary roller of horizontal edge embossing roller group being arranged in close proximity to roll face, wherein, the vertical edge embossing roller group includes vertical edge embossing main roller and at least two vertical edge embossing auxiliary rollers, which are in close proximity to the roll face of vertical edge embossing main roller and the axial spacing of vertical edge embossing auxiliary rollers is adjustable, and the original paper is continuously through horizontal edge embossing roller group and vertical edge embossing roller group respectively, so that the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller are pressed to each other to form at least two horizontal edge pattern patterns on the original paper, and the vertical edge embossing main roller and each vertical edge embossing auxiliary roller are pressed to each other to form at least two vertical edge pattern patterns on the original paper, and these horizontal edge pattern patterns and vertical edge pattern patterns are staggered on the original paper and form at least one four-side grid pattern.

[0009] Further, the roll face of the horizontal edge embossing main roller and / or the horizontal edge embossing auxiliary roller is formed with at least one group of horizontal edge pattern protrusions arranged along the parallel axis direction, wherein, with the rotation of the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller, the horizontal edge pattern protrusions between the roll faces of the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller act on the original paper to continuously form a plurality of horizontal edge pattern patterns arranged at equal intervals.

[0010] Further, the roll face of the horizontal edge embossing main roller is formed with at least two groups of horizontal edge pattern protrusions distributed in a circumferential annular shape, and the roll face of the horizontal edge embossing auxiliary roller is a smooth surface.

[0011] Further, the roll face of the horizontal edge embossing main roller is a smooth surface, and the roll face of the horizontal edge embossing auxiliary roller is formed with at least one group of horizontal edge pattern protrusions.

[0012] Further, the roll face of the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller is formed with at least one group of horizontal edge pattern protrusions.

[0013] Further, the roll face of the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller is formed with at least one group of horizontal edge pattern protrusions.

[0014] Further, the roll face of the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller is formed with at least one group of horizontal edge pattern protrusions.

[0015] Further, the vertical edge embossing main roller surface is provided with a plurality of protrusions, and each of the vertical edge embossing auxiliary roller surfaces is a smooth surface, wherein the protrusions of the vertical edge embossing main roller surface at the overlapping position with the vertical edge embossing auxiliary roller serve as the vertical edge pattern protrusions.

[0016] Further, the horizontal edge embossing main roller and the vertical edge embossing main roller share the same roller body, and the horizontal edge embossing auxiliary roller and the vertical edge embossing auxiliary roller are respectively in close contact with the roller surface of the same roller body.

[0017] The utility model discloses the above -mentioned scheme, and its beneficial effect lies in: 1) adjustable spacing: the adjustable spacing of the vertical edge embossing auxiliary roller axial spacing makes the spacing of adjacent vertical edge pattern can be adjusted according to the need, improves the flexibility and adaptability of product, 2) simple structure: the overall structure of device is simple, and easy operation and maintenance reduce production cost, 3) high production efficiency: can quickly switch to adapt to different specifications embossed paper product, reduces the adjustment time occupied because of the specification switching. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the combination schematic view of four-side fixed grid embossing device.

[0019] Figures 2-3 It is the schematic view of the first embodiment of horizontal edge pattern protrusion.

[0020] Figures 4-5 It is the schematic view of the second embodiment of horizontal edge pattern protrusion.

[0021] Figures 6-7 It is the schematic view of the third embodiment of horizontal edge pattern protrusion.

[0022] Figures 8-9 It is the schematic view of the first embodiment of vertical edge embossing roller group.

[0023] Figures 10-11 It is the schematic view of the second embodiment of vertical edge embossing roller group,

[0024] Figure 12 It is the combination schematic view of four-side fixed grid embossing device shown in other embodiments.

[0025] Figure 13 It is the schematic view of four-side grid pattern.

[0026] Figure 14 It is the combination schematic view of four-side fixed grid embossing device shown in other embodiments.

[0027] Figure 15 It is the schematic view of four-side grid pattern shown in other embodiments.

[0028] Wherein, 1 - transverse edge embossing roller group, 11 - transverse edge embossing main roller, 12 - transverse edge embossing auxiliary roller, 13 - transverse edge pattern protrusion, 2 - vertical edge embossing roller group, 21 - vertical edge embossing main roller, 22 - vertical edge embossing auxiliary roller, 23 - vertical edge pattern protrusion, 3 - embossing roller group, A - base paper, A1 - transverse edge pattern, A2 - vertical edge pattern, A3 - pre-embossing pattern. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the drawings, in which preferred embodiments of the present application are shown. The present application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0030] Referring to the drawings Figures 1-11 As shown in the drawings, in the present embodiment, an adjustable segmented four-side fixed pattern embossing device for household paper includes a transverse edge embossing roller group 1 and a vertical edge embossing roller group 2 which are arranged in front and back and through which the base paper A continuously passes. In this embodiment, the skilled person can set the transverse edge embossing roller group 1 at the upstream position of the vertical edge embossing roller group 2 (in this case, the base paper A passes through the transverse edge embossing roller group 1 first and then the vertical edge embossing roller group 2) or set the vertical edge embossing roller group 2 at the upstream position of the transverse edge embossing roller group 1 (in this case, the base paper A passes through the vertical edge embossing roller group 2 first and then the transverse edge embossing roller group 1) according to the actual production needs. The transverse edge embossing roller group 1 is composed of a transverse edge embossing main roller 11 and a transverse edge embossing auxiliary roller 12, which are arranged in close contact with each other. The continuous base paper A is pressed by the rotation of the transverse edge embossing main roller 11 and the transverse edge embossing auxiliary roller 12, so that at least two transverse edge pattern A1 are formed on the base paper A. The transverse edge pattern A1 is arranged almost vertically to the conveying direction of the base paper A. The vertical edge embossing roller group 2 includes a vertical edge embossing main roller 21 and at least two vertical edge embossing auxiliary rollers 22 which are arranged in parallel and in close contact with the roller surface of the vertical edge embossing main roller 21 and have an adjustable axial spacing. Specifically, each vertical edge embossing auxiliary roller 22 can be arranged coaxially or circumferentially offset. Regardless of the arrangement, as long as each vertical edge embossing auxiliary roller 22 is arranged at equal intervals relative to the vertical edge embossing main roller 21, the continuous base paper A is pressed by the rotation of the vertical edge embossing main roller 21 and each vertical edge embossing auxiliary roller 22, so that at least two vertical edge patterns are formed on the base paper A. The vertical edge patterns are arranged almost parallel to the conveying direction of the base paper A.

[0031] In the present embodiment, the base paper A is continuously fed through the cross edge embossing roller set 1 and the vertical edge embossing roller set 2 in sequence, firstly in the cross edge embossing roller set 1, the cross edge embossing primary roller 11 and the cross edge embossing secondary roller 12 are pressed against each other to form at least two cross edge pattern A1 on the base paper A by embossing; then in the vertical edge embossing roller set 2, the vertical edge embossing primary roller 21 and each vertical edge embossing secondary roller 22 are pressed against each other to form at least two vertical edge pattern A2 on the base paper A by embossing, these cross edge pattern A1 and vertical edge pattern A2 are staggered and fixed on the base paper A to form at least one four-side grid pattern, in actual production, a plurality of four-side grid patterns arranged in matrix will be formed on the base paper A, these four-side grid patterns can be square, rectangular or other polygons, depending on the arrangement and spacing of the cross edge and vertical edge pattern A2.

[0032] In the present embodiment, by adjusting the axial distance between adjacent vertical edge embossing secondary rollers 22, the spacing of adjacent vertical edge pattern A2 on the base paper A can be adjusted accordingly to meet the size requirements of different specifications of products, specifically, each vertical edge embossing secondary roller 22 in the present embodiment is mounted on a pre-set bracket (not shown in the figure), these brackets allow the vertical edge embossing secondary roller 22 to move in the axial direction, by adjusting the position of the secondary roller on the bracket, the axial distance between adjacent vertical edge embossing secondary rollers 22 can be changed, for example, if the axial distance between adjacent vertical edge embossing secondary rollers 22 is 15 cm, the transverse width of the four-side grid pattern produced will also be 15 cm, when the axial distance between adjacent vertical edge embossing secondary rollers 22 is adjusted to 20 cm, the transverse width of the four-side grid pattern produced will also be 20 cm accordingly, this adjustment method makes the produced products flexible to adapt to different size requirements.

[0033] In the present embodiment, the above-mentioned cross edge pattern A1 and vertical edge pattern A2 can be simple lines, geometric shapes or more complex patterns, depending on the engraving design of the roller surface.

[0034] In the present embodiment, referring to the attached Figures 2-7As shown, at least one group of lateral pattern protrusions 13 extending along the parallel axis direction is formed on the roll surface of the lateral embossing main roller 11 and / or the lateral embossing auxiliary roller 12. The protrusions can be various shapes, such as lines, geometric patterns or complex patterns, depending on the desired embossing effect. When the lateral embossing main roller 11 and the lateral embossing auxiliary roller 12 rotate and are in pressure fit, the lateral pattern protrusions 13 between the two roll surfaces act on the base paper A passing therebetween. Due to the design of the protrusions, they periodically leave lateral pattern patterns A1 on the base paper A at equal intervals, and each lateral pattern pattern A1 extends along a direction perpendicular to the conveying direction of the base paper A. Therefore, with continuous pressure fit, the base paper A is periodically formed with a plurality of lateral pattern patterns A1 arranged at intervals. For the sake of understanding the lateral embossing roller set 1, further explanation will be given in combination with specific embodiments.

[0035] Further, referring to the accompanying drawings Figures 3-4 As shown, embodiment one of the lateral pattern protrusions 13: the lateral pattern protrusions 13 are formed on the roll surface of the lateral embossing main roller 11, i.e., at least two groups of lateral pattern protrusions 13 are formed on the roll surface of the lateral embossing main roller 11 in a circumferential ring shape. The actual number of groups can be determined according to actual production needs. Here, three or four groups of lateral pattern protrusions 13 are preferred. The roll surface of the lateral embossing auxiliary roller 12 is smooth. Thus, the lateral embossing action is completed by the "point-to-surface" periodic pressure fit between the lateral pattern protrusions 13 of each group of the lateral embossing main roller 11 and the roll surface of the lateral embossing auxiliary roller 12.

[0036] Further, referring to the accompanying drawings Figures 4-5 As shown, embodiment two of the lateral pattern protrusions 13: the roll surface of the lateral embossing main roller 11 is smooth, and the roll surface of the lateral embossing auxiliary roller 12 is formed with at least one group of lateral pattern protrusions 13. Here, one or two groups of lateral pattern protrusions 13 are preferred. Thus, the lateral embossing action is completed by the "surface-to-point" periodic pressure fit between the roll surface of the lateral embossing main roller 11 and the lateral pattern protrusions 13 of each group of the lateral embossing auxiliary roller 12.

[0037] Further, referring to the accompanying drawings Figures 6-7 As shown, embodiment three of the lateral pattern protrusions 13: the roll surface of the lateral embossing main roller 11 and the roll surface of the lateral embossing auxiliary roller 12 are both formed with at least one group of lateral pattern protrusions 13. Thus, the lateral embossing action is completed by the "point-to-point" periodic pressure fit between the lateral pattern protrusions 13 of the roll surface of the lateral embossing main roller 11 and the lateral pattern protrusions 13 of the roll surface of the lateral embossing auxiliary roller 12.

[0038] In summary, no matter what embodiment is used, the lateral pattern pattern A1 embossing action can be completed, which improves the flexibility and production efficiency of the equipment and makes it easier and faster to produce paper with different patterns.

[0039] In the present embodiment, refer to the attached drawings Figures 7-11 As shown, at least one group of vertical edge pattern protrusions 23 arranged along the circumferential direction of the roll surface of the vertical edge embossing master roll 21 and / or the vertical edge embossing slave roll 22 are formed on the roll surface, which can be lines, geometric figures or other patterns, extending along the circumferential direction of the roll surface to form continuous vertical edge pattern protrusions 23, thus, when the vertical edge embossing master roll 21 and the vertical edge embossing slave roll 22 rotate and are in a pressing fit, the vertical edge pattern protrusions 23 between the roll surfaces will act on the raw paper A passing between them, and due to the design of the protrusions, they will leave a continuous, equally spaced vertical edge pattern A2 on the raw paper A, which is similar to the horizontal edge pattern, but in a perpendicular direction, thus forming a vertical edge decoration on the paper. In order to facilitate the understanding of the vertical edge embossing roll set 2, further explanation and description will be made in combination with the specific embodiments below.

[0040] Further, refer to the attached drawings Figures 8-9 As shown, embodiment one of the vertical edge embossing roll set 2: a group of vertical edge pattern protrusions 23 arranged along the circumferential direction of the roll surface are formed on the roll surface of each vertical edge embossing slave roll 22, while the roll surface of the vertical edge embossing master roll 21 is smooth, thus, through the continuous "point-to-surface" pressing of the roll surface of the vertical edge embossing master roll 21 and the vertical edge pattern protrusions 23 of the roll surface of the vertical edge embossing slave roll 22, the embossing action is completed.

[0041] Further, refer to the attached drawings Figures 10-11 As shown, embodiment two of the vertical edge embossing roll set 2: the roll surface of the vertical edge embossing master roll 21 is covered with a plurality of protrusions, which can be regarded as potential vertical edge pattern protrusions 23, while the roll surface of each vertical edge embossing slave roll 22 is smooth, when the vertical edge embossing master roll 21 and the vertical edge embossing slave roll 22 rotate and are in a pressing fit, the protrusions on the vertical edge embossing master roll 21 will interact with the roll surface of the vertical edge embossing slave roll 22 to form a vertical edge pattern A2 on the raw paper A, but it should be noted that not all protrusions will form a pattern; only those protrusions that overlap with the vertical edge embossing slave roll 22 will function as vertical edge pattern protrusions 23. The significant advantage of this design is flexibility, as the master roll is covered with protrusions, the pattern and spacing of the vertical edge pattern can be easily changed by adjusting the position and number of the slave rolls, which makes it easier and faster to produce embossed paper of different specifications and styles.

[0042] In summary, no matter what embodiment is used, the embossing action of the vertical edge pattern A2 can be completed, which improves the flexibility and production efficiency of the equipment, making it easier and faster to produce paper with different patterns.

[0043] Refer to the attached drawings Figure 13As shown, in the embodiment, the base paper A sequentially passes through the horizontal edge embossing roller group 1 and the vertical edge embossing roller group 2 to perform secondary embossing operation, and horizontal edge pattern A1 and vertical edge pattern A2 are formed on the base paper A, respectively, wherein the axial spacing between each vertical edge embossing sub-roller 22 is adjusted to correspondingly adjust the spacing of adjacent vertical edge pattern A2, so that the spacing of adjacent vertical edge pattern A2 can be adjusted as needed, improving the flexibility and adaptability of the product, and further flexibly and quickly changing the specifications of the four-edge grid pattern without additional cumbersome operations such as roller replacement, greatly reducing the production and maintenance costs.

[0044] In addition, the utility model discloses other embodiments, specifically, referring to the attached Figure 12 As shown, the horizontal edge embossing main roller 11 and the vertical edge embossing main roller 21 share the same roller body, and the horizontal edge embossing sub-roller 12 and the vertical edge embossing sub-roller 22 are respectively close to the roller surface of the same roller body, although sharing one roller body, but the horizontal edge embossing pattern and the vertical edge embossing pattern are realized by different mechanisms, and in this way, although the manufacturing cost can be reduced, but the embossing effect is always limited compared with the previous embodiment. Secondly, the roller surface of the roller body in this way can be fully covered with several protrusions or adopt a flat surface, specifically, for the roller body design with full protrusions: these protrusions can be regarded as potential vertical edge pattern protrusions 23 or horizontal edge embossing protrusions 13, that is: only the protrusions in the position overlapping with the horizontal edge embossing sub-roller 12 can play the role of horizontal edge pattern protrusions 13, and only the protrusions in the position overlapping with the vertical edge embossing sub-roller 22 can play the role of vertical edge pattern protrusions 23; The roller surface of the horizontal edge embossing sub-roller 12 and the vertical edge embossing sub-roller 22 here can adopt a roller surface structure with convex points or a flat surface. For the roller body design with a flat surface, the roller surface of the horizontal edge embossing sub-roller 12 and the vertical edge embossing sub-roller 22 here needs to be designed with a roller surface with horizontal edge embossing protrusions 13 and vertical edge pattern protrusions 23, respectively.

[0045] Referring to the attached Figure 14 and 15As shown, the utility model discloses other embodiments, specifically, still include embossing roller group 3, wherein, embossing roller group 3 can be set in the upstream position of horizontal edge embossing roller group 1, also can be set in the downstream position of horizontal edge embossing roller group 1, wherein, embossing roller group 3 is by a bunch of each other close embossing master roll and embossing auxiliary roll, and the base paper A is preformed from the roll face gap between embossing master roll and embossing auxiliary roll to realize embossing forming and get pre-embossed pattern A3, and pre-embossed pattern A3 corresponds the position of forming the empty horizontal edge pattern pattern A1 and vertical edge pattern pattern A2, plays the blank position in the middle part of the four edge lattice pattern, makes the product more beautiful. In addition, the structure and principle of embossing master roll and embossing auxiliary roll belong to conventional technical means, do not expand here, and embossing master roll can adopt the pattern roll structure with the convex point, and embossing auxiliary roll can adopt the light roll or the pattern roll structure with the convex point, do not make specific limit here, and the person skilled in the art can select as required.

[0046] The above-mentioned embodiments are only the preferred embodiments of the utility model, and do not make any form of the utility model, and any person skilled in the art, without departing from the technical scheme range of the utility model, the above-mentioned disclosed technical content is used to make more possible changes and adornment, or modification to the utility model technical scheme of the utility model, so that all the equivalent embodiments of the utility model, therefore, the contents of the utility model technical scheme are not departed from, according to the idea of the utility model, the equivalent equivalent change made, should be covered in the protection scope of the utility model.

Claims

1. An adjustable segmented four-sided register embosser for tissue paper, characterized by: The invention discloses a kind of papermaking embossing roller group, including front-back reversible arrangement and for raw paper continuous passage vertical edge embossing roller group (2), the vertical edge embossing roller group (2) includes vertical edge embossing main roller (21) and at least two parallel vertical edge embossing sub-rollers (22) of vertical edge embossing main roller (21) roll surface and axial spacing adjustable, the raw paper (A) is respectively continuous through vertical edge embossing roller group (2), so that vertical edge embossing main roller (21) and each vertical edge embossing sub-roller (22) are mutually pressed to form at least two vertical edge pattern (A2) on raw paper (A) secondary.

2. A segmented four-edge register embossing apparatus for tissue paper as claimed in claim 1, wherein: The roll surface of the horizontal edge embossing main roller (11) and / or the horizontal edge embossing sub-roller (12) is formed with at least one group of horizontal edge pattern protrusions (13) arranged along the parallel axis direction, wherein, with the rotational pressing cooperation of the horizontal edge embossing main roller (11) and the horizontal edge embossing sub-roller (12), the horizontal edge pattern protrusions (13) between the roll surfaces of the two rollers act on the raw paper (A) to continuously form a plurality of horizontal edge pattern (A1) arranged at equal intervals.

3. A segmented four-sided register embosser for tissue paper as claimed in claim 2, wherein: The roll surface of the horizontal edge embossing main roller (11) is formed with at least two groups of circumferentially annular horizontal edge pattern protrusions (13), and the roll surface of the horizontal edge embossing sub-roller (12) is smooth.

4. A segmented four-edge register embosser for tissue paper as claimed in claim 2, wherein: The roll surface of the horizontal edge embossing main roller (11) is smooth, and the roll surface of the horizontal edge embossing sub-roller (12) is formed with at least one group of horizontal edge pattern protrusions (13).

5. A segmented four-edge registration embosser for tissue paper as claimed in claim 2, wherein: The roll surfaces of the horizontal edge embossing main roller (11) and the horizontal edge embossing sub-roller (12) are both formed with at least one group of horizontal edge pattern protrusions (13).

6. A segmented four-edge registration embosser for tissue paper as claimed in claim 2, wherein: The roll surface of the vertical edge embossing main roller (21) or the vertical edge embossing sub-roller (22) is formed with at least one group of vertical edge pattern protrusions (23) arranged along the circumferential direction, wherein, with the rotational pressing cooperation of the vertical edge embossing main roller (21) and the vertical edge embossing sub-roller (22), the vertical edge pattern protrusions (23) between the roll surfaces of the two rollers act on the raw paper (A) to continuously form a plurality of vertical edge pattern (A2) arranged at equal intervals.

7. A segmented four-edge registration embosser for tissue paper according to claim 6, wherein: Each of the vertical edge embossing sub-rollers (22) is formed with a group of vertical edge pattern protrusions (23) arranged along the circumferential direction, and the roll surface of the vertical edge embossing main roller (21) is smooth.

8. A segmented four-edge registration embosser for tissue paper as claimed in claim 6, wherein: The roll surface of the vertical edge embossing main roller (21) is covered with a plurality of protrusions, and the roll surface of each of the vertical edge embossing sub-rollers (22) is smooth, wherein the protrusions of the roll surface of the vertical edge embossing main roller (21) at the overlapping position with each of the vertical edge embossing sub-rollers (22) serve as vertical edge pattern protrusions (23).

9. A segmented four-edge registration embosser for tissue paper as claimed in claim 1, wherein: The horizontal edge embossing master roller (11) and the vertical edge embossing master roller (21) share the same roller body, and the horizontal edge embossing slave roller (12) and the vertical edge embossing slave roller (22) are respectively close to the roller surface of the same roller body.

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