Space-adjustable printing mechanism
By introducing a combination structure of adjustable auxiliary rollers and hollowed-out master rollers into the tissue printing mechanism, the problem of low production efficiency caused by the fixed width of the printing roller is solved, and flexible production and efficient processing of tissues of different widths are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-07
AI Technical Summary
In existing tissue printing technology, the width of the printing roller is fixed, which means that the printing roller needs to be changed when producing tissues of different widths, increasing costs and reducing efficiency.
Design an adjustable spacing printing mechanism. By setting multiple movable and adjustable auxiliary rollers after the printing roller, and using the dynamic adjustment of the spacing and width of the auxiliary rollers, the large blank unit is divided into customizable small blank units. Combined with the composite structure of the hollow unit of the master roller and the printing roller with precise matching, flexible production can be achieved.
It enables flexible production of paper towels of different widths without changing the pattern rollers, improving production efficiency and the ease of adjusting equipment parameters, while ensuring the accuracy of pattern forming.
Smart Images
Figure CN224089872U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paper towel printing technology, specifically to an adjustable spacing printing mechanism. Background Technology
[0002] Tissue paper printing technology is a production process that uses a roller pressing process to create specific decorative patterns on paper strips. It utilizes a pattern roller engraved with background and printing patterns, in conjunction with a matching pressure roller, to press the pattern onto the paper surface. In traditional processes, the surface of the pattern roller is engraved with background, printing, and blank areas in a fixed proportion. By pressing against a flat roller or master roller, continuous repeating pattern units are formed on the paper strip.
[0003] In existing technology, a blank flat roller and a pattern roller are used to imprint the pattern on a tissue roll in one pass, including the background, printed pattern, and blank areas. The width of the roller is roughly the same as the width of the tissue roll, but the actual width of the tissues to be produced is much smaller than the width of the tissue roll. Therefore, it is necessary to carve the corresponding width of the cutouts and background on the pattern roller according to the actual width of the tissues to be produced, and then cut the imprinted tissues to the required width. Since the width of the cutouts and background on the pattern roller is fixed, only tissues of a fixed width can be produced each time. If there is a need to process tissues of different widths, different pattern rollers need to be used, which increases production costs and reduces production efficiency.
[0004] Therefore, how to process paper towels of different widths without changing the pattern roller has become an urgent problem to be solved. Utility Model Content
[0005] To address the problems existing in the background art, this utility model provides an adjustable spacing printing mechanism, which is provided with a pattern roller, a master roller and an auxiliary roller. The pattern roller is engraved with a background pattern and a print, and the background pattern and print cover the surface of the pattern roller.
[0006] The surface of the master roller is provided with several hollow units at intervals. Inside the hollow units are flower covers that match the printing position and size of the flower roller. After the flower covers come into contact with the printing, they completely cover the printing. The arc length R of the hollow unit is equal to the width of the large blank unit. The arc length between adjacent hollow units is equal to the width of the background pattern between adjacent large blank units.
[0007] There are n auxiliary rollers, denoted as A1, A2, ..., Ai, ..., An; n ≥ 2. After the paper tape is printed by the pattern roller and the n auxiliary rollers, the large blank unit is divided into n-1 small blank units, each containing the printed pattern; the background pattern is between adjacent small blank units; the distance between auxiliary roller Ai and auxiliary roller A(i+1) is denoted as Di, and the width of 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.
[0008] In the preferred embodiment, all the hollowed-out units of the mother roller have equal arc lengths R.
[0009] In a preferred embodiment, adjacent cutout units of the mother roller have equal spacing.
[0010] In the preferred embodiment, n auxiliary rollers are mounted on a slide rail, and the spacing of the auxiliary rollers is adjusted by moving along the slide rail.
[0011] In the preferred embodiment, the pattern roller, the main roller, and the auxiliary roller are mounted on the same support frame.
[0012] In the preferred embodiment, the depth of the bottom surface of the hollow unit from the surface of the mother roller is not less than 1 mm.
[0013] In the preferred embodiment, the number of auxiliary rollers, n, is at least 6.
[0014] In the preferred embodiment, all auxiliary rollers have the same width.
[0015] In the preferred embodiment, the spacing between adjacent auxiliary rollers is equal.
[0016] The beneficial effects achieved by this utility model are as follows:
[0017] First, this invention features an adjustable auxiliary roller assembly structure. By setting multiple movable and adjustable auxiliary rollers behind the pattern roller, and utilizing the dynamic adjustment of the spacing and width of the auxiliary rollers, the large blank space unit of the initial printing is divided into customizable small blank space units. This design breaks through the rigid limitations of traditional fixed pattern rollers, realizing the flexible production needs of a single pattern roller for tissue products of different widths.
[0018] Secondly, this invention employs a composite structure that precisely matches the hollowed-out units of the mother roller with the pattern roller. The hollowed-out units, spaced apart on the surface of the mother roller, have built-in pattern covers. During the initial printing, this accurately preserves the printed pattern within the large blank units while simultaneously creating a stable background pattern through the non-hollowed-out areas. This design ensures the forming accuracy of the basic pattern and provides a reliable reference structure for subsequent secondary processing of the auxiliary rollers.
[0019] Third, this invention achieves dynamic adjustment through a slide rail auxiliary roller mounting structure. The auxiliary roller group adopts a slide rail mounting method, allowing for individual or coordinated adjustment of the spacing and position parameters of each roller during operation. Combined with the quick replacement of auxiliary rollers of different widths, this enables flexible configuration of parameters such as the segmentation ratio of the blank space unit and the background pattern spacing. This design significantly improves the convenience of equipment parameter adjustment and process adaptability. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2yes Figure 1 Enlarged view of the structure at point A in the middle;
[0022] Figure 3 yes Figure 1 Enlarged view of the structure at point B;
[0023] Figure 4 This is a schematic diagram of the mother roller structure;
[0024] Figure 5 This is a schematic diagram of the flower roller structure;
[0025] Figure 6 This is a schematic diagram of the tissue paper pattern after being printed by the master roller and the pattern roller;
[0026] Figure 7 This is a schematic diagram of the tissue paper pattern after being pressed by the master roller and the pattern roller, and then pressed by the pattern roller and the auxiliary roller.
[0027] Figure 8 This is a schematic diagram of the unfolded pattern on the roller.
[0028] Figure 9 This is a schematic diagram of the auxiliary roller structure.
[0029] Numbering on the map:
[0030] 1. Pattern roller; 2. Mother roller; 21. Hollowed-out unit; 3. Auxiliary roller; 4. Background pattern; 5. Printing; 6. Large blank space unit; 7. Small blank space unit; 8. Pattern cover. Detailed Implementation
[0031] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0032] Reference Figures 1-9 This utility model designs an adjustable spacing printing mechanism, which includes the following structure:
[0033] The pattern roller 1 has a surface engraved with a background pattern 4 and printed patterns 5, the pattern of which is shown in the attached image. Figure 8 As shown. It works in conjunction with the mother roller 2 to complete the initial printing.
[0034] Mother roller 2 has several perforated units 21 spaced apart on its surface, as shown in the attached figure. Figure 4 As shown. The cutout unit contains a floral cover 8, which completely covers the printing 5 of the floral roller 1. The arc length of the cutout unit is equal to the width of the large blank unit 6, and the arc length between adjacent cutout units is equal to the width of the background pattern 4. All cutout units have equal arc lengths, and the bottom depth is no less than 1mm.
[0035] Auxiliary rollers 3, numbered at least two and denoted as A1-An, are mounted on a slide rail and can be moved along the rail to adjust the spacing Di. All auxiliary rollers have equal width, and the spacing between adjacent rollers is adjustable or set to be equal. The auxiliary rollers 3 and the pattern roller 1 form a small blanking unit 7 through secondary printing.
[0036] The support frame, the pattern roller 1, the main roller 2, and the auxiliary roller 3 are preferably all mounted on the same support frame. The main roller 2 and the pattern roller 1 press against each other to form the large white space unit 6. After the spacing of the auxiliary roller 3 group is adjusted by the slide rail, it works with the pattern roller 1 to press and divide the large white space unit into small white space units 7. The pattern cover 8 of the main roller 2 corresponds precisely to the printing position 5 of the pattern roller 1.
[0037] This invention features n auxiliary rollers, where n ≥ 2, denoted sequentially as A1, A2, ..., Ai, ..., An. All auxiliary rollers 3 are mounted on slide rails and can move independently along the rails to adjust their spacing. After the paper tape is initially pressed by the pattern roller 1 and the main roller 2, a large blank unit 6 with a width of R is formed, containing the printed pattern 5. A background pattern 4 is formed between adjacent large blank units 6.
[0038] After the paper tape enters the imprinting area composed of the pattern 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.
[0039] The distance between auxiliary rollers Ai and A(i+1) is denoted as Di, and the width of the i-th small blank space unit 7 is equal to Di. By moving the position of 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 space unit 7. The axial width of auxiliary roller Ai is denoted as di. The width of the background pattern 4 between the i-th small blank space unit 7 and the (i+1)-th small blank space unit 7 is equal to di. By replacing auxiliary rollers 3 with different widths di, the width of the background pattern 4 between adjacent small blank space units 7 is changed.
[0040] The following describes the detailed working process of an adjustable spacing printing mechanism according to this utility model:
[0041] Step S1: Initial Imprinting between the Mother Roller and the Pattern Roller; The paper tape first enters the imprinting area between the Pattern Roller 1 and the Mother Roller 2. Several perforated units 21 are distributed at intervals on the surface of the Mother Roller 2. The arc length of the perforated unit 21 is equal to the width of the large blank unit 6 printed out. A pattern cover 8 is set in each perforated unit 21, and the position and size of the pattern cover 8 are precisely matched with the printed pattern 5 on the surface of the Pattern Roller 1.
[0042] Imprinting to form a pattern: When the paper tape passes through the pattern roller 1 and the mother roller 2, the cutout unit 21 imprints several large blank units 6 on the paper tape. The pattern cover 8 completely covers the printed 5 of the pattern roller 1, so that each large blank unit 6 contains the printed 5. The background pattern 4 is formed by imprinting between adjacent large blank units 6 through the non-cutout area of the mother roller 2.
[0043] The arc length of all the hollowed-out units 21 of the mother roller 2 is preferably equal, the bottom depth is ≥1mm, and the arc length between adjacent hollowed-out units 21 is equal to the width of the background pattern 4.
[0044] Step S2: Secondary imprinting by auxiliary rollers and pattern rollers; the paper tape imprinted in step S1 continues to enter the imprinting area composed of pattern roller 1 and n auxiliary rollers 3A1, A2, …, An, n≥2.
[0045] All auxiliary rollers 3 are mounted on a slide rail. The distance Di between adjacent auxiliary rollers Ai and A(i+1) is adjusted by moving them along the slide rail. The width Di of the auxiliary rollers 3 can be the same or different. The paper tape is pressed by the pattern roller 1 and the auxiliary rollers 3. The distance Di of 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 rollers 3 determines the width of the background pattern 4 between the i-th and i+1-th small blank units 7.
[0046] The large white space unit 6 is divided into n-1 small white space units 7 by the background pattern printed by the auxiliary roller 3. Each small white space unit 7 has a printed pattern 5, and the background pattern 4 is between adjacent small white space units 7.
[0047] The width of the small blank space unit 7 can be flexibly controlled by adjusting the spacing Di of the auxiliary rollers 3; the width of the background pattern 4 can be changed by replacing the auxiliary rollers 3 with different widths di. If the width of the second small blank space unit 7 needs to be changed from 80mm to 100mm, simply increase the spacing D2 between the auxiliary rollers A2 and A3 from 80mm to 100mm. If the width of the background pattern 4 between the second and third small blank space units 7 needs to be changed from 50mm to 80mm, the width d2 of the auxiliary roller A2 needs to be changed from 50mm to 80mm.
[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An adjustable spacing printing mechanism, characterized in that: It is equipped with a pattern roller, a mother roller and an auxiliary roller. The pattern roller is engraved with a background pattern and a printed pattern, which cover the entire surface of the pattern roller. The surface of the master roller is provided with several hollow units at intervals. Inside the hollow units are flower covers that match the printing position and size of the flower roller. After the flower covers come into contact with the printing, they completely cover the printing. The arc length R of the hollow unit is equal to the width of the large blank unit. The arc length between adjacent hollow units is equal to the width of the background pattern between adjacent large blank units. There are n auxiliary rollers, denoted as A1, A2, ..., Ai, ..., An; n ≥ 2. After the paper tape is printed by the pattern roller and the n auxiliary rollers, the large blank unit is divided into n-1 small blank units, each containing the printed pattern; the background pattern is between adjacent small blank units; the distance between auxiliary roller Ai and auxiliary roller A(i+1) is denoted as Di, and the width of 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.
2. The printing mechanism according to claim 1, characterized in that: All the hollowed-out units of the mother roller have equal arc lengths R.
3. The printing mechanism according to claim 1, characterized in that: The adjacent cutout units of the mother roller have equal spacing.
4. The printing mechanism according to claim 1, characterized in that: n auxiliary rollers are installed on the slide rail, and the spacing of the auxiliary rollers is adjusted by moving along the slide rail.
5. The printing mechanism according to claim 1, characterized in that: The pattern roller, main roller, and auxiliary roller are mounted on the same support frame.
6. The printing mechanism according to claim 1, characterized in that: The depth of the bottom surface of the hollow unit from the surface of the mother roller is not less than 1mm.
7. The printing mechanism according to claim 1, characterized in that: The number of auxiliary rollers, n, is at least 6.
8. The printing mechanism according to claim 1, characterized in that: All auxiliary rollers have the same width.
9. The printing mechanism according to claim 1, characterized in that: The distance between adjacent auxiliary rollers is equal.