Space-adjustable printing method and mechanism
By designing an imprinting system with adjustable auxiliary roller set, tissue printing of different widths can be achieved without replacing the flower rollers, which solves the problem of inefficient production efficiency of traditional tissue printing equipment, reduces costs and improves production flexibility.
Patent Information
- Application Number
- CN202510737429.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-07-22
AI Technical Summary
In the prior art, paper towel printing equipment requires replacement of flower rollers to adapt to the production of tissues of different widths, resulting in high production costs and low efficiency.
An adjustable pitch printing method and mechanism is designed. Through an imprinting system composed of flower rollers, mother rollers and multiple adjustable auxiliary rollers, the large white space unit is divided into small white space units by dynamic adjustment of auxiliary roller spacing and width, and the production of tissue paper of different widths is realized.
It breaks through the limitations of the traditional flower roll fixed structure and realizes flexible production of tissue paper with different widths of a single flower roll, reducing equipment costs and improving production efficiency.
Smart Images
Figure CN120348062A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of tissue printing, and specifically relates to an adjustable-spacing printing method and mechanism. Background Art
[0002] Tissue printing technology is a production process that forms specific decorative patterns on paper tapes through a rolling process. It uses a patterned roller engraved with background patterns and prints and a matching pressure roller to press the patterns onto the paper surface. In traditional processes, the surface of the patterned roller is engraved with background patterns, prints, and blank areas in a fixed ratio. By pressing against a flat roller or a master roller, continuous and repeated pattern units are formed on the paper tape.
[0003] In the prior art, a blank flat roller and a patterned roller are used to press the patterns on a tissue roll at one time, including background patterns, prints, and blanks. The width of the pressure roller is equivalent to the width of the tissue roll. However, the width of the tissue actually required for production is much smaller than the width of the tissue roll. Therefore, it is necessary to engrave corresponding-width hollow areas and background patterns on the patterned roller according to the width of the tissue actually required for production, and cut the printed tissue to obtain the tissue of the required width. Since the widths of the hollow areas and background patterns on the patterned roller are fixed, only tissues of a fixed width can be produced each time. If there are processing requirements for tissues of different widths, different patterned rollers need to be replaced, which increases the production cost and results in low production efficiency.
[0004] Therefore, how to process tissues of different widths without replacing the patterned roller has become an urgent problem to be solved. Summary of the Invention
[0005] To solve the problems in the background art, the present invention provides an adjustable-spacing printing method, which includes the following steps: S1, a paper tape is pressed by a patterned roller and a master roller to print a number of large blank units; the large blank units contain prints; the background patterns are between adjacent large blank units; S2, the paper tape is further pressed by the patterned roller and n auxiliary rollers, and the n auxiliary rollers are respectively denoted as A1, A2... Ai... An; n≥2; after the paper tape is pressed by the patterned roller and the n auxiliary rollers, the large blank units are divided into n-1 small blank units, and each small blank unit contains a print; the background patterns are between adjacent small blank units; the distance between the auxiliary roller Ai and the auxiliary roller A(i+1) is denoted as Di, and the width of the auxiliary roller Ai is denoted as di, where: The width of the i-th small blank unit is equal to Di; the width of the background pattern between the i-th small blank unit and the (i+1)-th small blank unit is equal to di; the width of the i-th small blank unit is adjusted by adjusting Di, and the width of the background pattern between the i-th small blank unit and the (i+1)-th small blank unit is adjusted by adjusting di.
[0006] The present invention designs an adjustable-spacing printing mechanism, which is provided with a flower roller, a mother roller and auxiliary rollers. The surface of the flower roller is engraved with background patterns and prints, and the background patterns and prints cover the surface of the flower roller; A number of hollowing units are arranged at intervals on the surface of the mother roller. Flower covers that match the printing positions and sizes of the flower roller are arranged in the hollowing units. After the flower covers contact the prints, the prints are completely covered; the arc length R of the hollowing unit is equal to the width of the large blanking unit; the interval arc length between adjacent hollowing units is equal to the width of the background pattern between adjacent large blanking units.
[0007] In a preferred solution, all the hollowing units of the mother roller have an equal arc length R.
[0008] In a preferred solution, the adjacent hollowing units of the mother roller have an equal interval distance.
[0009] In a preferred solution, n auxiliary rollers are installed on a slide rail, and the spacing between the auxiliary rollers is adjusted by moving along the slide rail.
[0010] In a preferred solution, the flower roller, the mother roller and the auxiliary rollers are installed on the same support frame.
[0011] In a preferred solution, the depth of the bottom surface of the hollowing unit from the surface of the mother roller is not less than 1 mm.
[0012] In a preferred solution, the number n of the auxiliary rollers is at least 6.
[0013] In a preferred solution, all the auxiliary rollers have equal widths.
[0014] In a preferred solution, the spacing between adjacent auxiliary rollers is equal.
[0015] The beneficial effects achieved by the present invention are as follows: First, the present invention designs an adjustable auxiliary roller group structure. By arranging a plurality of movable and adjustable auxiliary rollers behind the flower roller, and using the dynamic adjustment of the spacing and width of the auxiliary rollers, the large blanking units in the primary imprinting are divided into customizable small blanking units. This design breaks through the rigid limitation of the traditional fixed flower roller and realizes the flexible production requirements of a single flower roller for paper towel products with different widths.
[0016] Second, the present invention adopts a composite structure in which the hollowing units of the mother roller are precisely matched with the flower roller. The hollowing units arranged at intervals on the surface of the mother roller are internally provided with flower covers. During the primary imprinting, the printing patterns in the large blanking units can be precisely retained, and at the same time, stable background patterns are formed through the non-hollowing areas. This design ensures the forming accuracy of the basic patterns and lays a reliable reference structure for the secondary processing of the subsequent auxiliary rollers.
[0017] Thirdly, the present invention realizes dynamic adjustment through the slide rail type auxiliary roller installation structure. The auxiliary roller group adopts the slide rail installation method. During operation, the spacing and position parameters of each roller can be adjusted individually or cooperatively. With the rapid replacement of auxiliary rollers of different widths, parameters such as the segmentation ratio of the blanking unit and the distance between the background patterns can be flexibly configured. This design greatly improves the convenience of equipment parameter adjustment and the process adaptation ability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is Figure 1 the enlarged view of the structure at A in Figure 3 is Figure 1 the enlarged view of the structure at B of Figure 4 is a schematic diagram of the mother roller structure; Figure 5 is a schematic diagram of the engraved roller structure; Figure 6 is a schematic diagram of the paper towel pattern after being embossed by the mother roller and the engraved roller; Figure 7 is a schematic diagram of the paper towel pattern after being embossed by the mother roller and the engraved roller, and then being embossed by the engraved roller and the auxiliary roller; Figure 8 is a schematic diagram of the unfolded pattern of the engraved roller; Figure 9 is a schematic diagram of the auxiliary roller structure.
[0019] Reference numerals in the figures: 1, engraved roller; 2, mother roller; 21, hollowed-out unit; 3, auxiliary roller; 4, background pattern; 5, printing; 6, large blanking unit; 7, small blanking unit; 8, engraved cover. DETAILED DESCRIPTION OF THE INVENTION
[0020] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of each structure described in the following embodiments are merely examples, and the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
[0021] Referring to Figures 1-9 , the present invention designs an adjustable-spacing printing mechanism, including the following structures: An engraved roller 1, on the surface of which are engraved a full coverage of background patterns 4 and printing 5, and the unfolded pattern is as shown in the appendix Figure 8 . It cooperates with the mother roller 2 to complete the primary embossing.
[0022] A mother roller 2, with a number of hollowed-out units 21 arranged at intervals on the surface, as shown in the appendixFigure 4 As shown. A flower cover 8 is arranged inside the hollowing unit, and the flower cover 8 completely covers the printing pattern 5 of the flower roller 1. The arc length of the hollowing unit is equal to the width of the large blank unit 6, and the arc length of the interval between adjacent hollowings is equal to the width of the background pattern 4. The arc lengths of all the hollowing units are equal, and the bottom depth is not less than 1 mm.
[0023] The auxiliary rollers 3, with the number of at least 2, denoted as A1 - An, are installed on the slide rail and can move along the slide rail to adjust the spacing Di. The widths of all the auxiliary rollers are equal, and the adjacent spacings are adjustable or set to be equal. The auxiliary rollers 3 and the flower roller 1 perform secondary imprinting to form small blank units 7.
[0024] Supporting frame. Preferably, the flower roller 1, the master roller 2 and the auxiliary rollers 3 are all installed on the same supporting frame. The master roller 2 and the flower roller 1 perform counter - pressing to form the large blank unit 6. After the spacing of the group of auxiliary rollers 3 is adjusted through the slide rail, they cooperate with the flower roller 1 to perform imprinting to divide the large blank unit into small blank units 7. The flower cover 8 of the master roller 2 precisely corresponds to the position of the printing pattern 5 of the flower roller 1.
[0025] In the present invention, n auxiliary rollers are provided, n≥2, denoted as A1, A2, …, Ai, …, An in sequence. All the auxiliary rollers 3 are installed on the slide rail and can move independently along the slide rail to adjust the spacing. After the paper tape is initially imprinted by the flower roller 1 and the master roller 2, a large blank unit 6 with a width of R is formed, which contains the printing pattern 5, and a background pattern 4 is formed between adjacent large blank units 6.
[0026] After the paper tape enters the imprinting area composed of the flower roller 1 and n auxiliary rollers 3, the auxiliary rollers 3 perform secondary imprinting on the paper tape. The imprinting position of each auxiliary roller Ai divides the large blank unit 6 into multiple small blank units 7. The n auxiliary rollers 3 divide the large blank unit 6 into n - 1 small blank units 7; the imprinting area between adjacent auxiliary rollers Ai and A(i + 1) forms the background pattern 4.
[0027] The spacing between the auxiliary rollers Ai and A(i + 1) is denoted as Di, and the width of the i - th small blank unit 7 is equal to Di. By moving the positions of the auxiliary rollers Ai or A(i + 1) on the slide rail, the value of Di is changed, thereby directly adjusting the width of the i - th small blank unit 7. The axial width of the auxiliary roller Ai is denoted as di. The width of the background pattern 4 between the i - th small blank unit 7 and the (i + 1) - th small blank unit 7 is equal to di. By replacing the auxiliary rollers 3 with different widths di, the width of the background pattern 4 between adjacent small blank units 7 is changed.
[0028] The following introduces the detailed process of an adjustable - spacing printing method of the present invention: Step S1: Initial imprinting of the master roller and the patterned roller; The paper tape first enters the imprinting area between the patterned roller 1 and the master roller 2. A number of hollow units 21 are distributed at intervals on the surface of the master roller 2, and the arc length of the hollow unit 21 is equal to the width of the large blank unit 6 imprinted. A flower cover 8 is arranged in each hollow unit 21, and the position and size of the flower cover 8 are precisely matched with the position and size of the printed pattern 5 on the surface of the patterned roller 1.
[0029] Forming a pattern by imprinting: When the paper tape passes between the patterned roller 1 and the master roller 2, the hollow unit 21 imprints a number of large blank units 6 on the paper tape. The flower cover 8 completely covers the printed pattern 5 of the patterned roller 1, so that each large blank unit 6 contains the printed pattern 5. The background pattern 4 is formed by imprinting through the non-hollow area of the master roller 2 between adjacent large blank units 6.
[0030] Preferably, the arc lengths of all the hollow units 21 on the master roller 2 are equal, the bottom surface depth ≥ 1 mm, and the interval arc length between adjacent hollow units 21 is equal to the width of the background pattern 4.
[0031] Step S2: Secondary imprinting of the auxiliary roller and the patterned roller; The paper tape imprinted in step S1 continues to enter the imprinting area composed of the patterned roller 1 and n auxiliary rollers 3A1, A2,..., An, where n ≥ 2.
[0032] All the auxiliary rollers 3 are installed on the slide rail, and the distance Di between adjacent auxiliary rollers Ai and A(i + 1) is adjusted by moving along the slide rail. The widths di of the auxiliary rollers 3 can be the same or different. The paper tape passes through the imprinting of the patterned roller 1 and the group of auxiliary rollers 3. The distance Di between the auxiliary rollers 3 determines the width of the i-th small blank unit 7, that is, Di = the width of the i-th small blank unit. The width di of the auxiliary roller 3 determines the width of the background pattern 4 between the i-th and the (i + 1)-th small blank units 7.
[0033] The large blank unit 6 is divided into n - 1 small blank units 7 by the background pattern imprinted by the auxiliary roller 3. Each small blank unit 7 has a printed pattern 5, and the background pattern 4 is between adjacent small blank units 7.
[0034] By adjusting the distance Di between the auxiliary rollers 3, the width of the small blank unit 7 can be flexibly controlled; by replacing the auxiliary rollers 3 with different widths di, the width of the background pattern 4 can be changed. If it is necessary to change the width of the second small blank unit 7 from 80 mm to 100 mm, only need to increase the distance D2 between the auxiliary rollers A2 and A3 from 80 mm to 100 mm. If it is necessary to change the width of the background pattern 4 between the second small blank unit 7 and the third small blank unit 7 from 50 mm to 80 mm, it is necessary to replace the width d2 of the auxiliary roller A2 from 50 mm to 80 mm.
[0035] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An adjustable-spacing printing method, characterized in that, It includes the following steps: S1. The paper tape is embossed with a number of large blanking units by a flower roller and a master roller; the large blanking units contain prints; the area between adjacent large blanking units is the background pattern; S2. The paper tape is then embossed by the flower roller and n auxiliary rollers, and the n auxiliary rollers are respectively denoted as A1, A2... Ai... An; n≥2; after the paper tape is embossed by the flower roller and the n auxiliary rollers, the large blanking units are divided into n - 1 small blanking units, and each small blanking unit contains a print; the area between adjacent small blanking units is the background pattern; the distance between the auxiliary roller Ai and the auxiliary roller A(i + 1) is denoted as Di, and the width of the auxiliary roller Ai is denoted as di, where: The width of the i-th small blanking unit is equal to Di; the width of the background pattern between the i-th small blanking unit and the (i + 1)-th small blanking unit is equal to di; the width of the i-th small blanking unit is adjusted by adjusting Di, and the width of the background pattern between the i-th small blanking unit and the (i + 1)-th small blanking unit is adjusted by adjusting di.
2. A printing mechanism for implementing the adjustable-spacing printing method as described in claim 1, characterized in that: It is provided with a flower roller, a master roller and auxiliary rollers, and the surface of the flower roller is engraved with a background pattern and prints, and the background pattern and prints cover the surface of the flower roller; The surface of the master roller is provided with a number of hollowed-out units at intervals, and flower covers matching the printing positions and sizes of the flower roller are arranged in the hollowed-out units, and the flower covers completely cover the prints after contacting the prints; the arc length R of the hollowed-out unit is equal to the width of the large blanking unit; the interval arc length between adjacent hollowed-out units is equal to the width of the background pattern between adjacent large blanking units.
3. The printing mechanism according to claim 2, wherein: All the hollowed-out units of the master roller have an equal arc length R.
4. The printing mechanism according to claim 2, characterized in that: The adjacent hollowed-out units of the master roller have an equal interval distance.
5. The printing mechanism according to claim 2, characterized in that: The n auxiliary rollers are installed on a slide rail, and the spacing between the auxiliary rollers is adjusted by moving along the slide rail.
6. The printing mechanism according to claim 2, characterized in that: The flower roller, the master roller and the auxiliary rollers are installed on the same support frame.
7. The printing mechanism according to claim 2, characterized in that: The depth of the bottom surface of the hollowed-out unit from the surface of the master roller is not less than 1 mm.
8. The printing mechanism according to claim 2, characterized in that: The number n of the auxiliary rollers is at least 6.
9. The printing mechanism according to claim 2, wherein: All the auxiliary rollers have equal widths.
10. The printing mechanism according to claim 2, wherein: The distances between adjacent auxiliary rollers are equal.