Adjustable sectional type four-edge freeze-frame embossing device for paper for daily use
By adopting an adjustable segmented four-side frozen embossing device in the production of domestic paper, the problems of single visual effects, fixed specifications, high cost and limited production efficiency in the prior art are solved, and the flexibility and efficient production of products are achieved.
Patent Information
- Application Number
- CN202411796904.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-02-28
AI Technical Summary
The existing bilateral embossing and traditional four-side embossing technologies each have problems such as single visual effects, fixed specifications, high costs and limited production efficiency, which are difficult to meet market changes and consumer needs.
The adjustable segmented four-side freeze-forming embossing device is adopted. Through the combined design of the horizontal embossing roller group and the vertical embossing roller group, and the adjustability of the axial spacing between the vertical embossing sub-rolls, the interlaced arrangement and freeze of the horizontal pattern pattern and the vertical pattern pattern on the base paper is realized, forming a beautiful four-side lattice pattern, and the spacing of the vertical pattern pattern is adjusted as needed.
It realizes product flexibility and adaptability, reduces production costs and maintenance costs, improves production efficiency, and can quickly switch embossed paper products that are suitable for different specifications.
Smart Images
Figure CN119526830A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of paper towel machinery production, in particular to a device for embossing household paper, which can form a four-side fixed-grid embossing effect with beautiful patterns on base paper through an adjustable segmented design. Background Art
[0002] In the field of household paper, tissue products are an indispensable part of our daily lives. Their quality and appearance design are gradually becoming important considerations for consumers when making choices. From napkins, toilet paper to facial tissue, these seemingly ordinary products often bring unexpected surprises through innovations in details. Among them, embossing technology is an important means to enhance the texture and aesthetics of household paper. Its development history and changes in market demand are particularly worthy of attention.
[0003] The existing double-side embossing and four-side embossing are two common forms of embossing technology for tissue paper, each of which has some characteristics and limitations.
[0004] Specifically, double-sided embossing, that is, the process of embossing only on both sides of the paper, although it can improve the appearance and touch of the paper to a certain extent, its disadvantages are also obvious: 1) Single visual effect: Since the embossed pattern is only distributed on both sides of the paper, the overall visual effect is relatively single and lacks layering. In occasions where the embossing effect needs to be displayed in all directions, double-sided embossing may not appear to be outstanding enough; 2) Double-sided embossing may be more suitable for certain specific decoration or packaging scenes, but in occasions where the embossing effect needs to be displayed in all directions or the overall beauty of the paper needs to be emphasized (such as napkins and gift wrapping paper in high-end restaurants), single-sided embossing may not appear to be delicate and high-end enough; 3) Double-sided embossed tissue products are easy to spread out on the other two sides without embossing, and the stacking and composite effect is not good.
[0005] Specifically, four-side embossing, that is, the process of embossing the edges of the paper, has some unique characteristics and advantages, but it also has some limitations: 1) High aesthetics: Four-side embossing can enhance the overall aesthetics of the paper, making the paper look more refined and high-end. The embossed pattern is usually distributed on the edges of the paper, forming a unique border effect, which enhances the three-dimensional sense of the paper. 2) Fixed specifications: Traditional four-side embossing devices often adopt a fixed embossing roller group design, resulting in the inability to flexibly adjust the specifications of the embossed pattern (such as size, shape, spacing, etc.), which limits the flexibility of producers in responding to different market demands. 3) High cost: Since the traditional four-side embossing device needs to be equipped with a special embossing roller group for each specification of the embossed pattern, the producer needs to bear a higher cost when replacing or upgrading the embossed pattern. 4) Limited production efficiency: When it is necessary to produce embossed paper products of different specifications, the traditional four-side embossing device may need to replace the entire embossing roller group or perform tedious adjustments, which will affect production efficiency and increase the production cycle.
[0006] In summary, single-sided embossing and traditional four-sided embossing each have their own characteristics and limitations. In order to overcome these limitations and meet market changes and consumer needs, producers need to continuously explore and innovate embossing technology, for example, developing embossing devices with higher flexibility and customizability. Summary of the invention
[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an adjustable segmented four-side grid embossing device for daily use paper. Through the combined design of the horizontal embossing roller group and the vertical embossing roller group, and the adjustability of the axial spacing between the vertical embossing auxiliary rollers, the horizontal pattern and the vertical pattern on the base paper are staggered and gridded to form a beautiful four-side grid pattern. At the same time, the spacing of the vertical pattern can be adjusted as needed.
[0008] In order to achieve the above-mentioned purpose, the present invention provides an adjustable segmented four-side fixed-grid embossing device for daily use paper, comprising a horizontal embossing roller group and a vertical embossing roller group that can be arranged front and back and for base paper to pass continuously, the horizontal embossing roller group comprises a horizontal embossing main roller and a horizontal embossing auxiliary roller whose roller surfaces are arranged closely, wherein the vertical embossing roller group comprises a vertical embossing main roller and at least two vertical embossing auxiliary rollers that are parallel and close to the roller surface of the vertical embossing main roller and whose axial spacing is adjustable, and the base paper passes through the horizontal embossing rollers respectively and continuously. The roller group and the vertical edge embossing roller group are used to make the horizontal edge embossing main roller and the horizontal edge embossing auxiliary roller press against each other to form at least two horizontal edge patterns on the base paper, and to make the vertical edge embossing main roller and each vertical edge embossing auxiliary roller press against each other to form at least two vertical edge patterns on the base paper for a second time. These horizontal edge patterns and vertical edge patterns are arranged alternately on the base paper and fixed to form at least one four-sided grid pattern; the spacing between adjacent vertical edge patterns on the base paper is adjusted accordingly by adjusting the axial distance between adjacent vertical edge embossing auxiliary rollers.
[0009] Furthermore, at least one group of transverse pattern protrusions extending along a direction parallel to the axis are formed on the roller surface of the transverse edge embossing main roller and / or the transverse edge embossing auxiliary roller, wherein, as the transverse edge embossing main roller and the transverse edge embossing auxiliary roller rotate and press together, the transverse pattern protrusions between the roller surfaces of the two rollers act on the base paper to continuously form a plurality of equally spaced transverse pattern patterns.
[0010] Furthermore, the roller surface of the main roller for transverse edge embossing is formed with at least two groups of transverse edge pattern protrusions distributed in a circumferential annular direction, and the roller surface of the auxiliary roller for transverse edge embossing is flat and smooth.
[0011] Furthermore, the surface of the main transverse edge embossing roller is smooth and flat, and the surface of the auxiliary transverse edge embossing roller is formed with at least one group of transverse edge pattern protrusions.
[0012] Furthermore, the roller surfaces of the transverse edge embossing main roller and the transverse edge embossing auxiliary roller are both formed with at least one group of transverse edge pattern protrusions.
[0013] Furthermore, at least one group of vertical pattern protrusions extending along the circumferential direction are formed on the roller surface of the vertical edge embossing main roller or the vertical edge embossing auxiliary roller, wherein, as the vertical edge embossing main roller and the vertical edge embossing auxiliary roller rotate in tandem, the vertical pattern protrusions between the roller surfaces of the two rollers act on the base paper to continuously form a plurality of vertical pattern patterns arranged at equal intervals.
[0014] Furthermore, the roller surface of each of the vertical-edge embossing auxiliary rollers is formed with a group of vertical-edge pattern protrusions extending along the circumferential direction, and the roller surface of the vertical-edge embossing main roller is a flat and smooth surface.
[0015] Furthermore, the surface of the vertical edge embossing main roller is covered with a plurality of protrusions, and the surface of each vertical edge embossing auxiliary roller is smooth, wherein the protrusions at the overlapping positions of the surface of the vertical edge embossing main roller and each vertical edge embossing auxiliary roller also serve as vertical edge pattern protrusions.
[0016] Furthermore, the main roller for embossing the horizontal edges and the main roller for embossing the vertical edges share the same roller body, and the auxiliary roller for embossing the horizontal edges and the auxiliary roller for embossing the vertical edges are respectively close to the roller surface of the same roller body.
[0017] The present invention adopts the above-mentioned scheme, and its beneficial effects are: 1) Adjustable spacing: The adjustability of the axial spacing between the vertical embossing sub-rollers allows the spacing of adjacent vertical pattern patterns to be adjusted as needed, thereby improving the flexibility and adaptability of the product; 2) Simple structure: The overall structure of the device is simple, easy to operate and maintain, and reduces production costs; 3) High production efficiency: It can quickly switch to adapt to embossed paper products of different specifications, reducing the adjustment time occupied by specification switching. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the combination of the four-side fixed embossing device.
[0019] Figure 2-3 Schematic diagram of the first embodiment of the raised horizontal pattern.
[0020] Figure 4-5 It is a schematic diagram of the second embodiment of the raised horizontal pattern.
[0021] Figure 6-7 It is a schematic diagram of the third implementation mode of the raised horizontal edge pattern.
[0022] Figure 8-9 It is a schematic diagram of the first embodiment of the vertical edge embossing roller group.
[0023] Figure 10-11 Schematic diagram of the second embodiment of the vertical edge embossing roller group, Fig.12 It is a schematic diagram of the combination of a four-side fixed-grid embossing device shown in other embodiments.
[0024] Fig.13 A schematic diagram of a four-sided grid pattern.
[0025] Fig.14 It is a schematic diagram of the combination of a four-side fixed-grid embossing device shown in other embodiments.
[0026] Fig.15 Schematic diagram of a four-sided grid pattern shown in other embodiments.
[0027] Among them, 1-horizontal embossing roller group, 11-horizontal embossing main roller, 12-horizontal embossing auxiliary roller, 13-horizontal pattern protrusion, 2-vertical embossing roller group, 21-vertical embossing main roller, 22-vertical embossing auxiliary roller, 23-vertical pattern protrusion, 3-embossing roller group, A-base paper, A1-horizontal pattern, A2-vertical pattern, A3-pre-embossing pattern. DETAILED DESCRIPTION
[0028] To facilitate the understanding of the present invention, the present invention is described more comprehensively below with reference to the accompanying drawings. The accompanying drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.
[0029] See attached Figure 1-11 As shown, in this embodiment, an adjustable segmented four-side fixed-grid embossing device for household paper includes a transverse embossing roller group 1 and a vertical embossing roller group 2 which can be arranged front to back and for base paper A to pass continuously, wherein those skilled in the art can set the transverse embossing roller group 1 at the upstream position of the vertical embossing roller group 2 (at this time, the base paper A first passes through the transverse embossing roller group 1 and then passes through the vertical embossing roller group 2) according to actual production needs, or place the vertical embossing roller group 2 at the upstream position of the transverse embossing roller group 1 (at this time, the base paper A first passes through the vertical embossing roller group 2 and then passes through the transverse embossing roller group 1). The horizontal edge embossing roller group 1 is composed of a horizontal edge embossing main roller 11 and a horizontal edge embossing auxiliary roller 12, and the roller surfaces of the two rollers are arranged closely. The horizontal edge embossing main roller 11 and the horizontal edge embossing auxiliary roller 12 act on the base paper A that passes continuously, so that the base paper A is embossed to form at least two horizontal edge patterns A1, and the horizontal edge patterns A1 here are 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 parallel rollers close to the roller surface of the vertical edge embossing main roller 21 and the axial spacing is adjustable. The vertical edge embossing auxiliary rollers 22, specifically, each vertical edge embossing auxiliary roller 22 can be coaxially arranged or circumferentially staggered. No matter which arrangement is adopted, it is only necessary to ensure that each vertical edge embossing auxiliary roller 22 is equidistantly arranged axially relative to the vertical edge embossing main roller 21. The vertical edge embossing main roller 21 and each vertical edge embossing auxiliary roller 22 rotate and press against each other to act on the base paper A passing continuously, so that the base paper A is embossed to form at least two vertical patterns, and the vertical pattern here is arranged almost parallel to the conveying direction of the base paper A.
[0030] In this embodiment, base paper A passes through the transverse embossing roller group 1 and the vertical embossing roller group 2 in sequence. First, in the transverse embossing roller group 1, the transverse embossing main roller 11 and the transverse embossing auxiliary roller 12 are pressed against each other, and at least two transverse pattern patterns A1 are embossed on the base paper A for one time; then, in the vertical embossing roller group 2, the vertical embossing main roller 21 and each vertical embossing auxiliary roller 22 are pressed against each other, and at least two vertical pattern patterns A2 are formed on the base paper A for a second time. These transverse pattern patterns A1 and vertical pattern patterns A2 are arranged alternately on the base paper A and fixed to form at least one four-sided grid pattern. In actual production, a number of four-sided grid patterns arranged in a matrix will be formed on the base paper A. These four-sided grid patterns can be squares, rectangles or other polygons, depending on the arrangement and spacing of the transverse and vertical pattern patterns A2.
[0031] In this embodiment, by adjusting the axial distance between adjacent vertical embossing rollers 22, the spacing between adjacent vertical pattern A2 on the base paper A can be adjusted accordingly, so as to meet the size requirements of products of different specifications. Specifically, each vertical embossing roller 22 of this embodiment is installed on a preset bracket (not shown in the figure), which allows the vertical embossing roller 22 to move in the axial direction. By adjusting the position of the roller on the bracket, the axial distance between adjacent vertical embossing rollers 22 can be changed. For example, if the original axial distance between adjacent vertical embossing rollers 22 is 15 cm, then the lateral width of the four-sided grid pattern produced will also be 15 cm. When the axial distance between adjacent vertical embossing rollers 22 is adjusted to 20 cm, the lateral width of the four-sided grid pattern produced will correspondingly become 20 cm. This adjustment method enables the produced products to flexibly adapt to different size requirements.
[0032] In this embodiment, the horizontal pattern A1 and the vertical pattern A2 may be simple lines, geometric shapes or more complex patterns, depending on the engraving design of the roller surface.
[0033] In this embodiment, see the attached Figure 2-7As shown, at least one group of transverse pattern protrusions 13 extending along a direction parallel to the axis are formed on the roller surface of the transverse embossing main roller 11 and / or the transverse embossing auxiliary roller 12. These protrusions can be in various shapes, such as lines, geometric figures or complex patterns, depending on the desired embossing effect. When the transverse embossing main roller 11 and the transverse embossing auxiliary roller 12 rotate and press together, the transverse pattern protrusions 13 between the roller surfaces of the two will act on the base paper A passing between them. Due to the design of the protrusions, they will periodically leave equally spaced transverse pattern patterns A1 on the base paper A, and each transverse pattern pattern A1 is relatively extended and arranged perpendicular to the conveying direction of the base paper A. Therefore, with the continuous pressing effect, the base paper A will periodically form a number of spaced transverse pattern patterns A1. In order to facilitate the understanding of the transverse embossing roller group 1, further explanation is given below in conjunction with the specific implementation method.
[0034] For further information, see Appendix Figure 3-4 As shown, implementation mode 1 of the transverse edge pattern protrusions 13: the transverse edge pattern protrusions 13 are correspondingly formed on the roller surface of the transverse edge embossing main roller 11, that is, at least two groups of circumferentially annularly distributed transverse edge pattern protrusions 13 are formed on the roller surface of the transverse edge embossing main roller 11, and the actual number of groups provided can be determined according to actual production needs. Here, three or four groups of transverse edge pattern protrusions 13 are preferably provided, and the roller surface of the transverse edge embossing auxiliary roller 12 is flat and smooth. Therefore, the embossing action is completed by performing "point-to-face" periodic pressing between each group of transverse edge pattern protrusions 13 of the transverse edge embossing main roller 11 and the roller surface of the transverse edge embossing auxiliary roller 12.
[0035] For further information, see Appendix Figure 4-5 As shown, the second implementation mode of the transverse edge pattern protrusions 13: the roller surface of the transverse edge embossing main roller 11 is flat and smooth, and at least one group of transverse edge pattern protrusions 13 are formed on the roller surface of the transverse edge embossing auxiliary roller 12, and preferably one or two groups of transverse edge pattern protrusions 13 are formed here. Thus, the embossing action is completed by periodically pressing the roller surface of the transverse edge embossing main roller 11 and each group of transverse edge pattern protrusions 13 of the transverse edge embossing auxiliary roller 12 "face to face".
[0036] For further information, see Appendix Figure 6-7 As shown, implementation method three of the transverse edge pattern protrusions 13: the roller surface of the transverse edge embossing main roller 11 and the roller surface of the transverse edge embossing auxiliary roller 12 are both formed with at least one group of transverse edge pattern protrusions 13, thereby, the transverse edge pattern protrusions 13 on the roller surface of the transverse edge embossing main roller 11 and the transverse edge pattern protrusions 13 on the roller surface of the transverse edge embossing auxiliary roller 12 are subjected to "point-to-point" periodic pressing to complete the embossing action.
[0037] In summary, no matter which implementation method is used, the embossing action of the horizontal edge pattern A1 can be completed, thereby improving the flexibility and production efficiency of the equipment and making it easier and faster to produce paper with different patterns.
[0038] In this embodiment, see the attached Figure 7-11 As shown, at least one group of vertical pattern protrusions 23 extending along the circumferential direction are formed on the roller surface of the vertical edge embossing main roller 21 and / or the vertical edge embossing auxiliary roller 22. These protrusions can be lines, geometric figures or other patterns. They extend along the circumference of the roller surface to form continuous vertical pattern protrusions 23. Therefore, when the vertical edge embossing main roller 21 and the vertical edge embossing auxiliary roller 22 rotate and press together, the vertical pattern protrusions 23 between the roller surfaces of the two will act on the base paper A passing between them. Due to the design of the protrusions, they will leave continuous, evenly spaced vertical pattern patterns A2 on the base paper A. The formation of this pattern is similar to the horizontal edge pattern, but the direction is vertical, thereby forming a vertical edge decoration on the paper. In order to facilitate the understanding of the vertical edge embossing roller group 2, further explanation is given below in conjunction with the specific implementation method.
[0039] For further information, see Appendix Figure 8-9 As shown, implementation mode 1 of the vertical edge embossing roller group 2: a group of vertical edge pattern protrusions 23 extending along the circumferential direction are formed on the roller surface of each vertical edge embossing auxiliary roller 22, and the roller surface of the vertical edge embossing main roller 21 is flat and smooth. Therefore, the embossing action is completed by continuous "face-to-face" pressing between the roller surface of the vertical edge embossing main roller 21 and the vertical edge pattern protrusions 23 on the roller surface of the vertical edge embossing auxiliary roller 22.
[0040] For further information, see Appendix Figure 10-11 As shown, the second implementation mode of the vertical edge embossing roller group 2: the roller surface of the vertical edge embossing main roller 21 is covered with a plurality of protrusions, which can be regarded as potential vertical edge pattern protrusions 23. At the same time, the roller surface of each vertical edge embossing auxiliary roller 22 is smooth. When the vertical edge embossing main roller 21 and the vertical edge embossing auxiliary roller 22 rotate and press against each other, the protrusions on the vertical edge embossing main roller 21 will interact with the roller surface of the vertical edge embossing auxiliary roller 22 to form a vertical edge pattern A2 on the base paper A. However, it should be noted that not all protrusions will form patterns; only those protrusions at the overlapping position with the vertical edge embossing auxiliary roller 22 will act as vertical edge pattern protrusions 23. The significant advantage of adopting this design is flexibility. Since the main roller 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 auxiliary rollers, which makes it easier and faster to produce embossed paper of different specifications and styles.
[0041] In summary, no matter which implementation method is used, the embossing action of the vertical pattern A2 can be completed, thereby improving the flexibility and production efficiency of the equipment and making it easier and faster to produce paper with different patterns.
[0042] See attached Fig.13As shown, in the present embodiment, base paper A is sequentially passed through a transverse embossing roller group 1 and a vertical embossing roller group 2 for secondary embossing operations, and a transverse pattern A1 and a vertical pattern A2 are respectively formed on the base paper A, wherein the axial spacing between each vertical embossing roller 22 is adjusted to correspond to the spacing between adjacent vertical pattern A2, so that the spacing between adjacent vertical pattern A2 can be adjusted as needed, thereby improving the flexibility and adaptability of the product, and further flexibly and quickly changing the specifications of the four-sided lattice pattern without the need for additional tedious operations such as changing rollers, thereby greatly reducing the production and maintenance costs.
[0043] In addition, the present invention also discloses other embodiments, specifically, see the attached Fig.12 As shown, the transverse edge embossing main roller 11 and the vertical edge embossing main roller 21 share the same roller body, and the transverse edge embossing auxiliary roller 12 and the vertical edge embossing auxiliary roller 22 are respectively close to the roller surface of the same roller body. Although they share the same roller body, the transverse edge embossing pattern and the vertical edge embossing pattern are achieved through different mechanisms. Although this method can reduce the manufacturing cost, its embossing effect is always limited compared with the previous embodiment. Secondly, the roller surface of the roller body using this method can be covered with a number of protrusions or adopt a smooth and smooth surface. Specifically, for the roller body design that is covered with protrusions: these protrusions can be regarded as potential vertical pattern protrusions 23 or horizontal embossed protrusions 13, that is, only the protrusions that partially overlap with the horizontal embossed auxiliary roller 12 will function as horizontal pattern protrusions 13, and only the protrusions that partially overlap with the vertical embossed auxiliary roller 22 will function as vertical pattern protrusions 23; the roller surface of the horizontal embossed auxiliary roller 12 and the vertical embossed auxiliary roller 22 here can adopt a roller surface structure with a convex point roller surface or a smooth and smooth surface. For the roller body design that adopts a smooth and smooth surface, the roller surface of the horizontal embossed auxiliary roller 12 and the vertical embossed auxiliary roller 22 here needs to adopt a roller surface design with horizontal embossed protrusions 13 and vertical pattern protrusions 23, respectively.
[0044] See attached Fig.14 and 15As shown, the present invention also discloses other embodiments, specifically, it also includes an embossing roller group 3, wherein the embossing roller group 3 can be set at the upstream position of the horizontal embossing roller group 1, and can also be set at the downstream position of the horizontal embossing roller group 1, wherein the embossing roller group 3 is composed of a stack of embossing main rollers and embossing auxiliary rollers close to each other, and the base paper A passes through the roller surface gap between the embossing main roller and the embossing auxiliary roller in advance to achieve embossing forming to obtain a pre-embossed pattern A3, and the pre-embossed pattern A3 corresponds to the position of forming the horizontal pattern A1 and the vertical pattern A2 to avoid the gap, and serves to embellish the blank position in the middle of the four-sided grid pattern, making the product more beautiful. In addition, the structure and principle of the embossing main roller and the embossing auxiliary roller belong to conventional technical means, which will not be elaborated here. The embossing main roller can adopt a patterned roller structure with convex points, and the embossing auxiliary roller can adopt a smooth roller or a patterned roller structure with convex points. No specific restrictions are made here, and those skilled in the art can choose as needed.
[0045] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the art can make more possible changes and modifications to the technical solutions of the present invention using the technical contents disclosed above without departing from the scope of the technical solutions of the present invention. All modifications are equivalent embodiments of the present invention. Therefore, all equivalent and equivalent changes made according to the ideas of the present invention without departing from the content of the technical solutions of the present invention should be included in the protection scope of the present invention.
Claims
1. An adjustable segmented four-side fixed-grid embossing device for household paper, characterized in that: The invention comprises a transverse embossing roller group (1) and a vertical embossing roller group (2) which can be arranged in a front-to-back manner and through which base paper continuously passes, wherein the transverse embossing roller group (1) comprises a transverse embossing main roller (11) and a transverse embossing auxiliary roller (12) whose roller surfaces are arranged closely together, wherein the vertical embossing roller group (2) comprises a vertical embossing main roller (21) and at least two vertical embossing auxiliary rollers (22) which are parallel to and close to the roller surface of the vertical embossing main roller (21) and whose axial spacing is adjustable, and the base paper (A) continuously passes through the transverse embossing roller group (1) and the vertical embossing roller group (2) respectively, so that the transverse embossing main roller (11) and the transverse embossing auxiliary roller (12) are arranged closely together, and wherein the vertical embossing roller group (2) comprises a vertical embossing main roller (21) and at least two vertical embossing auxiliary rollers (22) which are parallel to and close to the roller surface of the vertical embossing main roller (21) and whose axial spacing is adjustable. The side embossing auxiliary rollers (12) are pressed against each other to form at least two horizontal side patterns (A1) on the base paper (A), and the vertical side embossing main roller (21) and each vertical side embossing auxiliary roller (22) are pressed against each other to form at least two vertical side patterns (A2) on the base paper (A) for a second time. These horizontal side patterns (A1) and vertical side patterns (A2) are arranged alternately on the base paper (A) and are fixed to form at least one four-sided grid pattern; the axial distance between adjacent vertical side embossing auxiliary rollers (22) is adjusted to adjust the spacing between adjacent vertical side patterns (A2) on the base paper (A) accordingly.
2. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 1, characterized in that: At least one group of transverse pattern protrusions (13) extending in a direction parallel to the axis are formed on the roller surface of the transverse edge embossing main roller (11) and / or the transverse edge embossing auxiliary roller (12), wherein, as the transverse edge embossing main roller (11) and the transverse edge embossing auxiliary roller (12) rotate and press together, the transverse pattern protrusions (13) between the roller surfaces of the two rollers act on the base paper (A) to continuously form a plurality of transverse pattern patterns (A1) arranged at equal intervals.
3. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 2, characterized in that: The roller surface of the main transverse edge embossing roller (11) is formed with at least two groups of transverse edge pattern protrusions (13) distributed in a circumferential annular manner, and the roller surface of the auxiliary transverse edge embossing roller (12) is a smooth and glossy surface.
4. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 2, characterized in that: The roller surface of the transverse edge embossing main roller (11) is a smooth and flat surface, and the roller surface of the transverse edge embossing auxiliary roller (12) is formed with at least one group of transverse edge pattern protrusions (13).
5. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 2, characterized in that: The roller surfaces of the transverse edge embossing main roller (11) and the transverse edge embossing auxiliary roller (12) are both formed with at least one group of transverse edge pattern protrusions (13).
6. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 2, characterized in that: At least one group of vertical pattern protrusions (23) extending along the circumferential direction are formed on the roller surface of the vertical edge embossing main roller (21) or the vertical edge embossing auxiliary roller (22), wherein, as the vertical edge embossing main roller (21) and the vertical edge embossing auxiliary roller (22) rotate in tandem, the vertical pattern protrusions (23) between the roller surfaces of the two rollers act on the base paper (A) to continuously form a plurality of vertical pattern patterns (A2) arranged at equal intervals.
7. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 6, characterized in that: The roller surface of each of the vertical edge embossing auxiliary rollers (22) is formed with a group of vertical edge pattern protrusions (23) extending along the circumferential direction, and the roller surface of the vertical edge embossing main roller (21) is a smooth and glossy surface.
8. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 6, characterized in that: The roller surface of the vertical edge embossing main roller (21) is covered with a plurality of protrusions, and the roller surface of each vertical edge embossing auxiliary roller (22) is a smooth surface, wherein the protrusions at the overlapping positions of the roller surface of the vertical edge embossing main roller (21) and each vertical edge embossing auxiliary roller (22) also serve as vertical edge pattern protrusions (23).
9. The adjustable segmented four-side fixed-grid embossing device for household paper according to claim 1, characterized in that: The transverse edge embossing main roller (11) and the vertical edge embossing main roller (21) share the same roller body, and the transverse edge embossing auxiliary roller (12) and the vertical edge embossing auxiliary roller (22) are respectively closely attached to the roller surface of the same roller body.