Tissue folding machine for manufacturing continuous folded tissue

Abstract

The paper towel folding machine for manufacturing continuous folded paper towels is provided with a pair of folding rollers which fold the paper material in a "Z" shape through a roller gap, one of the folding rollers is provided with a first paper conveying roller in the upstream thereof, the roller surface of the first paper conveying roller is provided with suction holes for sucking the paper material, a paper breaking device is arranged for breaking the paper material sucked on the roller surface of the first paper conveying roller, a second paper conveying roller is arranged in the upstream of the first paper conveying roller, the roller surface of the second paper conveying roller is provided with a first scraper, a second scraper is arranged close to the second paper conveying roller, the first scraper and the second scraper cut the paper material along with the rotation of the second paper conveying roller, the cutting edges of the first scraper or the second scraper are in the form of comb teeth, so that the first scraper and the second scraper can only cut the paper material into dotted lines and cannot cut the paper material. The folded paper towels manufactured by the paper towel folding machine are continuous, and the user can take out multiple folded paper towels through one pulling action.

Description

Technical Field

[0001] This utility model relates to paper processing equipment, and more particularly to a paper towel folding machine for producing folded paper towels. Background Technology

[0002] Existing tissue folding machines produce individual tissues, with each stack consisting of a single, separate sheet. Users can only pull out one tissue at a time; to retrieve multiple tissues, they must pull them out multiple times. Utility Model Content

[0003] The purpose of this invention is to provide a tissue folding machine for manufacturing continuously folded tissues, so as to meet the user's need to take out multiple folded tissues with one pull action.

[0004] This invention is implemented as follows: a paper towel folding machine for manufacturing continuous folding paper towels includes a pair of parallel folding rollers. Paper passes through the gap between the two folding rollers. Each folding roller has a blade and a groove on its surface. The blade and groove are arranged alternately along the circumferential direction of the roller surface. As the two folding rollers rotate synchronously, the blades of the two folding rollers alternately insert into the grooves of the other roller, thereby folding the paper passing through the gap in a "Z" shape. In particular, a first paper feeding roller is provided upstream of one of the folding rollers. The first paper feeding roller is close to the folding roller. The surface of the first paper feeding roller is provided with suction holes for adsorbing paper. The suction holes stop absorbing air at the gap between the first paper feeding roller and the folding roller. A paper-breaking component is provided near the first paper feed roller. Whenever the paper-breaking component presses against the roller surface of the first paper feed roller, the paper material adsorbed on the roller surface of the first paper feed roller is torn off by the paper-breaking component. A second paper feed roller is provided upstream of the first paper feed roller. The second paper feed roller rotates synchronously with the first paper feed roller. The roller surface of the second paper feed roller is provided with a raised first scraper. A second scraper is provided near the second paper feed roller. As the second paper feed roller rotates, the first scraper periodically scrapes against the second scraper. The paper is sandwiched between the first scraper and the second scraper during the scraping. The blade of the first scraper or the second scraper is comb-shaped. The comb-shaped blade ensures that the result of the first scraper scraping against the second scraper is only to cut a dotted perforation line on the paper without cutting the paper.

[0005] In a preferred embodiment, the surface of the first paper feed roller is provided with a groove corresponding to the insert on the adjacent folding roller. As the first paper feed roller and the folding roller rotate synchronously, the insert of the folding roller inserts into and exits the groove.

[0006] In a preferred embodiment, the surface of the first paper feed roller is provided with a groove corresponding to the first scraper. As the first paper feed roller and the second paper feed roller rotate synchronously, the first scraper inserts into and exits the groove.

[0007] The advantage of this invention is that the folded tissues produced are continuous sheets, which meets the user's need to take out multiple folded tissues with one pull action. Attached Figure Description

[0008] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the paper-breaking component pressing the first paper feed roller; Figure 3 This is a three-dimensional schematic diagram of the second scraper; Figure 4 This is a schematic diagram of a comb-shaped blade; Figure 5 yes Figure 1 Enlarged view of part A; Figure 6 yes Figure 1 Enlarged view of part B. Detailed Implementation

[0009] To facilitate understanding of this invention, a more comprehensive description is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0010] It should be noted that the terms "first" and "second" in this utility model are only used to distinguish names and do not represent specific quantities or order.

[0011] See Figure 1 The tissue folding machine of this invention includes a pair of parallel folding rollers 1 and 2. Each folding roller has alternating inserts 3 and grooves 4 arranged along the circumference of its surface. The paper passes through the gap between the two folding rollers. As the two folding rollers 1 and 2 rotate synchronously, the inserts 3 of the two folding rollers alternately insert into the grooves 4 of the other roller, thereby continuously folding the paper passing through the gap in a "Z" shape.

[0012] See Figure 1One of the folding rollers 1 has a first paper feed roller 5 located upstream of it. The first paper feed roller 5 is close to the folding roller 1. The roller surface of the first paper feed roller 5 is provided with suction holes 6 for adsorbing paper. The suction holes 6 adsorb the paper that has passed through the first paper feed roller 5 onto the roller surface. As the first paper feed roller 5 rotates, the suction holes 6 periodically stop absorbing air at the gap between the first paper feed roller 5 and the folding roller 1, so that the paper adsorbed on the first paper feed roller 5 can fall from the first paper feed roller 5 onto the folding roller 1. The specific method for controlling the periodic stopping and resuming of air intake by the suction holes 6 can adopt existing technology, such as the embodiment of periodic air intake and stopping of air intake by the suction holes of the upper and lower rewinding rollers disclosed in patent application No. 202410755930.1 entitled "Paper Breaking and Rewinding Mechanism and Method for Rewinding Machine".

[0013] See Figure 1 A paper breaker 7 is located near the first paper feed roller 5. Whenever the paper breaker 7... Figure 2 When the paper is pressed against the surface of the first paper feed roller 5, the paper traveling along with the rotation of the first paper feed roller 5 will be torn by the pressure and drag of the paper-breaking component 7. In this embodiment, the paper-breaking component 7 is fixed on a rotating shaft 8, which drives the paper-breaking component 7 to rotate. The rotational motion can be either rotating in the same direction or reciprocating. In addition to rotational motion, the paper-breaking component 7 can also perform reciprocating linear motion. The device driving the paper-breaking component 7 can be a motor, a cylinder, etc. The paper-breaking component 7 can be a single part covering the entire width of the paper, or it can be composed of multiple parts arranged at intervals along the width of the paper.

[0014] See Figure 1 A second paper feed roller 9 is located upstream of the first paper feed roller 5. The second paper feed roller 9 rotates synchronously with the first paper feed roller 5. The surface of the second paper feed roller 9 is provided with a raised first scraper 10. A second scraper 11 is located near the second paper feed roller 9. See also... Figure 1 , Figure 3 The second doctor blade 11 is fixed to a fixed roller 15, and its blade is spiral-shaped. As the second paper feed roller 9 rotates, the first doctor blade 10 periodically scrapes against the spiral-shaped second doctor blade 11, thus cutting the paper sandwiched between the first doctor blade 10 and the second doctor blade 11 like scissors. The blade of the second doctor blade 11 is comb-shaped. The comb-shaped blade ensures that the first doctor blade 10 and the second doctor blade 11 can only cut perforation lines on the paper without cutting the paper completely. Because the comb teeth are very fine, they cannot cut through the paper. Figures 1 to 3 It is drawn in the middle, therefore, Figures 1 to 3 The blade of the second scraper 11 in the picture does not have comb teeth drawn on it. Figure 4 This is a partially enlarged view of the second scraper 11, schematically showing its comb-like blade. It should be noted that, as another embodiment, the blade of the first scraper 10 may also be comb-like.

[0015] See Figure 1 In this embodiment, the second paper feed roller 9 is provided with three first scrapers 10. Each rotation of the second paper feed roller 9 cuts three perforation lines on the paper. However, the number of first scrapers 10 provided on the second paper feed roller 9 is not limited to three. For example, there may be only one or more, depending on the diameter of the second paper feed roller 9 and the spacing of the perforation lines to be cut on the paper.

[0016] The operation process of this utility model will be fully described below with reference to the accompanying drawings. (See attached figures) Figure 1 The continuous paper material passes sequentially through the gaps between the second feed roller 9, the first feed roller 5, and the folding rollers 1 and 2. The second feed roller 9, the first feed roller 5, and the folding rollers 1 and 2 rotate synchronously, with the roller surface linear velocity matching the paper's travel speed. As the second feed roller 9 rotates, the first doctor blade 10 periodically scrapes against the second doctor blade 11, thus cutting perforated lines on the paper. When the paper material passes the first feed roller 5, it is attracted to the roller surface by the suction holes 6 of the first feed roller 5. When the paper material reaches the gap between the first feed roller 5 and the folding roller 1, the suction holes 6 at this position stop suction, and the paper material falls from the first feed roller 5 onto the folding roller 1. The paper material falling onto the folding roller 1 passes through the gaps between the two folding rollers 1 and 2, and is continuously folded in a "Z" shape by the two folding rollers 1 and 2. The folded paper is stacked on a support below the folding roller (the support is omitted in the figure) to form a stack of folded tissues 12. When the stack of folded tissues 12 reaches the required quantity for a stack of tissues, see [reference needed]. Figure 2 The paper cutter 7 presses against the surface of the first paper feed roller 5, tearing the paper adhering to the roller 5. Since there are already perforated lines on the paper, it easily breaks at the perforation line closest to the paper cutter 7 downstream of it. After the paper breaks, the paper cutter 7 returns to its original position. Figure 1 As shown in the diagram, the broken paper material is divided into two parts. The paper material downstream of the break passes through the gap of the folding roller and becomes the end of a stack of folded tissues 12, at which point the entire stack of folded tissues 12 can be sent to the next process. The paper material upstream of the break passes through the gap of the folding roller and begins to move below the folding roller. Figure 1 The new stacking process is shown. By continuously repeating the above process, stacks of tissue products can be produced. Each stack of tissue products is made by folding continuous paper. The paper between each two adjacent perforation lines is a folded tissue. When using the tissue, the user can pull out multiple folded tissues at once and easily tear the folded tissues at the perforation lines.

[0017] For the best implementation, see also Figure 1 , Figure 5The first paper feed roller 5 has a groove 13 on its surface that corresponds to the insert 3 on the folding roller 1. As the first paper feed roller 5 and the folding roller rotate synchronously, the insert 3 of the folding roller periodically inserts into and exits the groove 13. The groove 13 allows the first paper feed roller 5 to be as close as possible to the folding roller 1, further ensuring that the paper can fall smoothly from the first paper feed roller 5 onto the folding roller 1.

[0018] For the best implementation, see also Figure 1 , Figure 6 The first paper feed roller 5 has a groove 14 on its surface corresponding to the first doctor blade 10. As the first paper feed roller 5 and the second paper feed roller 9 rotate synchronously, the first doctor blade 10 periodically inserts into and exits the groove 14. The groove 14 allows the second paper feed roller 9 to be as close as possible to the first paper feed roller 5, further ensuring that the paper can be smoothly transferred from the second paper feed roller 9 to the first paper feed roller 5.

[0019] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the scope of protection of this utility model.

Claims

1. A tissue folding machine for manufacturing continuous folding tissues, comprising a pair of parallel folding rollers, wherein paper passes through the gap between the two folding rollers, each folding roller has a cutter and a groove on its surface, the cutter and groove being arranged alternately along the circumferential direction of the roller surface, and as the two folding rollers rotate synchronously, the cutter of the two folding rollers alternately inserts into the groove of the other, thereby folding the paper passing through the gap in a "Z" shape, characterized in that: One of the folding rollers is provided with a first paper feeding roller upstream. The first paper feeding roller is close to the folding roller. The roller surface of the first paper feeding roller is provided with suction holes for adsorbing paper. The suction holes stop sucking air at the roller gap between the first paper feeding roller and the folding roller. A paper-breaking component is provided near the first paper feed roller. Whenever the paper-breaking component presses against the roller surface of the first paper feed roller, the paper material adsorbed on the roller surface of the first paper feed roller is torn off by the paper-breaking component. A second paper feed roller is provided upstream of the first paper feed roller. The second paper feed roller rotates synchronously with the first paper feed roller. The roller surface of the second paper feed roller is provided with a raised first scraper. A second scraper is provided near the second paper feed roller. As the second paper feed roller rotates, the first scraper periodically scrapes against the second scraper. The paper is sandwiched between the first scraper and the second scraper during the scraping. The blade of the first scraper or the second scraper is comb-shaped. The comb-shaped blade ensures that the result of the first scraper scraping against the second scraper is only to cut a dotted perforation line on the paper without cutting the paper.

2. The tissue folding machine for manufacturing continuously folded tissues as described in claim 1, characterized in that: The first paper feed roller has a groove on its surface that corresponds to the insert blade on the adjacent folding roller. As the first paper feed roller and the folding roller rotate synchronously, the insert blade of the folding roller inserts into and exits the groove.

3. The tissue folding machine for manufacturing continuously folded tissues as described in claim 1, characterized in that: The first paper feed roller has a groove on its surface that corresponds to the first scraper. As the first paper feed roller and the second paper feed roller rotate synchronously, the first scraper inserts into and retracts from the groove.

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