Paper end-to-end lapping mechanism of folding machine

Abstract

A paper material end-to-end lap joint mechanism of a folding machine is provided with a paper conveying roller close to a paper breaking roller and a folding roller, the diameter of the paper conveying roller is smaller than that of the paper breaking roller, and the arrangement distance of paper head air suction holes in the paper conveying roller is smaller than the arrangement distance of paper cutters of the paper breaking roller and equal to the arrangement distance of paper suction holes of the folding roller. The paper body air suction holes of the paper breaking roller stop air suction according to the sequence that the paper body air suction holes close to the paper head stop air suction firstly and the paper body air suction holes close to the paper tail stop air suction finally, and a paper pressing roller abutting against the roller face of the paper conveying roller is further arranged. The paper feeding device has the advantages that the head of the paper is always in a state of being sucked by a certain roller body in the end-to-end lap joint process of the paper, and in the process that each piece of paper passes through the paper conveying roller, not only is the head sucked by the paper conveying roller, but also the paper body part is sucked by the paper breaking roller or pressed by the paper pressing roller, so that the paper feeding efficiency is greatly improved. According to the utility model, the end-to-end lap joint process of paper can be smoothly completed even under the condition that the paper breaking roller, the paper conveying roller and the folding roller rotate at a high speed, and the production efficiency of the folding machine can be improved.

Description

Technical Field

[0001] The utility model relates to a folding machine for producing folded paper towels, in particular to a mechanism for realizing the end-to-end overlap of paper materials in the folding machine. Background Art

[0002] After cutting the continuous paper material released from a single roll into sequentially arranged sheets, a folding machine using a single paper source needs to overlap the ends of adjacent sheets so that the front end of the next sheet overlaps the back end of the previous sheet. In the prior art, the paper material overlap mechanism of the folding machine can only operate at low speeds, which seriously restricts the improvement of the folding machine's production efficiency. For example, the utility model patent with publication number CN488451Y and titled "An N-type paper towel folding machine" requires the use of airflow to flip the paper during the overlap process. If the mechanism runs too fast, the airflow cannot ensure sufficient time to flip the paper, resulting in failure of the mechanism. Utility Model Content

[0003] The utility model aims to provide a paper material end-to-end overlapping mechanism for a folding machine, so as to overcome the defect that the existing mechanism can only operate at a low speed.

[0004] The utility model is implemented as follows: the paper material end-to-end overlapping mechanism of the folding machine includes a paper cutting roller, the roller surface of the paper cutting roller is provided with a plurality of paper cutting knives protruding from the roller surface and arranged at equal intervals along the circumferential direction of the roller surface, and a scraper is provided near the paper cutting roller. Each time the paper cutting roller rotates one circle, each paper cutting knife scrapes against the scraper once in turn, thereby cutting the continuous paper material passing through the paper cutting roller and the scraper into independent sheets of paper. A folding roller is provided below the paper cutting roller, and the roller surface of the folding roller is provided with a plurality of paper suction holes arranged at equal intervals along the circumferential direction of the roller surface. In particular, a paper feeding roller is provided close to both the paper cutting roller and the folding roller. The paper cutting roller, the paper feeding roller and the folding roller are parallel and rotate synchronously at equal angular velocities. The angular velocity direction of the paper feeding roller is opposite to that of the paper cutting roller and the folding roller; from the cross section of the paper cutting roller, on the roller surface between every two adjacent paper cutting knives of the paper cutting roller, there are a paper head suction hole and a plurality of paper body suction holes arranged in sequence along the reverse direction of the rotation direction of the paper cutting roller, the paper head suction hole absorbs the head of the cut paper, and the paper body suction hole absorbs the paper body part from the head to the tail of the cut paper; the diameter of the paper feeding roller is smaller than that of the paper cutting roller, and the roller surface of the paper feeding roller is provided with a plurality of paper head suction holes arranged at equal intervals along the circumferential direction of the roller surface, and the arrangement spacing of the paper head suction holes is both smaller than the arrangement spacing of the paper cutting knives of the paper cutting roller and equal to the arrangement spacing of the folding roller. The paper suction holes of the rollers are arranged at equal intervals; as the paper feed roller and the paper cutting roller rotate synchronously, the paper head suction holes of the paper cutting roller and the paper head suction holes of the paper feed roller periodically reach the roller gap between the two rollers together, and the paper head suction holes of the paper cutting roller that reach the roller gap stop suctioning to release the paper head it has adsorbed. The roller gap is so narrow that the released paper head can be immediately adsorbed by the paper head suction holes of the paper feed roller that are also in the roller gap; the position where the paper body suction holes of the paper cutting roller stop suctioning lags behind the position where the paper head suction holes of the paper cutting roller stop suctioning. As the paper cutting roller rotates, every time the paper head adsorbed by the paper head suction holes of the paper cutting roller is transferred to the paper feed roller, multiple paper heads of the paper are adsorbed. The paper suction holes of the paper body stop suctioning in sequence, and the multiple paper body suction holes stop suctioning in sequence according to the order that the paper head stops suctioning first and the paper tail stops suctioning last; as the paper feed roller and the folding roller rotate synchronously, the paper head suction holes of the paper feed roller and the paper suction holes of the folding roller periodically reach the roller gap between the two rollers together, and the paper head suction holes of the paper feed roller that reach the roller gap stop suctioning, thereby releasing the paper head they have adsorbed, and the roller gap is so narrow that the released paper head can be immediately adsorbed by the paper suction holes of the folding roller that is also in the roller gap; a pressure roller is provided against the roller surface of the paper feed roller, and the pressure roller presses the paper onto the paper feed roller when the paper passes through the paper feed roller.

[0005] As the best embodiment, a paper guide is provided between the paper feed roller and the folding roller to guide the paper to separate from the roller surface of the paper feed roller. The roller surface of the paper feed roller is provided with an annular groove along the circumferential direction of the roller surface. The front guiding end of the paper guide is hidden in the annular groove at the roller gap between the paper feed roller and the folding roller and does not protrude from the roller surface of the paper feed roller. Starting from the front guiding end, the paper guide extends along the rotation direction of the folding roller to form an arcuate guiding surface facing the roller surface of the folding roller, and the arcuate guiding surface is curved in a direction gradually away from the paper feed roller.

[0006] As a best embodiment, viewed from the cross section of the paper breaking roller, a roller surface of the paper breaking roller is provided with a groove between each of the paper head suction holes and the first paper body suction hole immediately following the paper head suction hole.

[0007] The advantage of the present invention is that in the process of each sheet of paper starting from the paper breaking roller, passing through the paper feeding roller and finally reaching the folding roller, the head of the paper is always in a state of being sucked by the paper breaking roller, the paper feeding roller or the folding roller, and in the process of each sheet of paper passing through the paper feeding roller, not only is the head of the paper always sucked by the paper feeding roller, but the paper body behind the head is also either sucked by the paper breaking roller or pressed by the paper pressing roller. Therefore, the present invention can ensure that the process of overlapping the head and tail of the paper can be successfully completed even when the paper breaking roller, the paper feeding roller and the folding roller are rotating at high speed, which is conducive to improving the production efficiency of the folding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0009] Figure 2 This is a schematic diagram of the paper cutter and scraper of the paper breaking roller scraping against each other;

[0010] Figure 3 yes Figure 2 A magnified view of part A;

[0011] Figure 4 This is a schematic diagram of the paper head transferring from the paper breaking roller to the paper feeding roller;

[0012] Figure 5 yes Figure 4 A magnified view of part B;

[0013] Figures 6 to 8 This is a schematic diagram of the process of separating the paper body from the paper breaking roller;

[0014] Figure 9 This is a schematic diagram showing that the paper head suction hole of the paper feed roller and the paper suction hole of the folding roller reach the roller gap together;

[0015] Figure 10 yes Figure 9 Magnified view of part C;

[0016] Figure 11 It is a schematic diagram of the paper transferred to the folding roller and continuing to move under the drive of the folding roller;

[0017] Figure 12 It is a three-dimensional schematic diagram of the coordination relationship among the paper breaking roller, folding roller and paper guide;

[0018] Figure 13 Yes Delete Figure 12 Schematic diagram after folding roller in;

[0019] Figure 14 The present invention is a schematic diagram of an embodiment in which the paper head suction holes on the paper feed roller are arranged in groups. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description is provided below with reference to the accompanying drawings. The accompanying drawings illustrate 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. These embodiments are provided solely to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0021] It should be noted that when an element is considered to be “connected to” another element, it can be directly connected to the other element or there may be an intervening element.

[0022] See also Figure 1 The paper sheet end-to-end splicing mechanism of the folding machine includes a paper cutting roller 1, a folding roller 2 located below the paper cutting roller, and a paper feed roller 3 located between the paper cutting roller and the folding roller. The paper feed roller 3 is close to both the paper cutting roller 1 and the folding roller 2. The paper cutting roller 1, the paper feed roller 3, and the folding roller 2 are parallel and rotate synchronously at equal angular velocities. The angular velocity of the paper feed roller 3 is opposite to that of the paper cutting roller 1 and the folding roller 2. It should be noted that Figure 1 The illustrated mechanism features another folding roller to the right of folding roller 2, similar to the structure of existing folding machines. However, the folding roller operating in the opposite direction of the feed roller's angular velocity, as described in the present invention and in the claims, specifically refers to the folding roller closest to the feed roller. The specific structure and operating principles of these two folding rollers are similar to those of existing folding machines and are irrelevant to the objectives of this invention, so they will not be described in detail.

[0023] The roller surface of the paper cutting roller 1 is provided with a plurality of paper cutting knives 4 that are arranged at equal intervals along the circumference of the roller surface and protrude from the roller surface. The number of paper cutting knives 4 is determined according to actual needs. In this embodiment, four paper cutting knives 4 are provided. A scraper 5 is provided near the paper cutting roller 1. Figure 2 Every time the paper cutting roller 1 rotates one circle, each paper cutter 4 takes turns to scrape against the scraper 5 once, thereby cutting the continuous paper material passing between the paper cutting roller 1 and the scraper 5 into independent sheets of paper 6.

[0024] From the cross section of the paper breaking roller 1, as shown Figure 1 As shown, on the roller surface between every two adjacent paper cutters of the paper cutting roller, there are a paper head suction hole 7 and a plurality of paper body suction holes 8 arranged in sequence in the reverse direction of the paper cutting roller's rotation direction. Figure 2 、 Figure 3 The head of the cut paper 6 is sucked by the paper head suction hole 7, and the paper body suction hole 8 sucks the paper body part from the head to the tail of the cut paper 6.

[0025] See also Figure 1 The diameter of the paper feed roller 3 is smaller than that of the paper cutting roller 1. Since the paper feed roller 3 and the paper cutting roller 1 rotate synchronously at equal angular velocities, the linear velocity of the roller surface of the paper feed roller 3 is lower than that of the paper cutting roller 1. The roller surface of the paper feed roller 3 is provided with a plurality of paper suction holes 9 arranged at equal intervals along the circumference of the roller surface. The roller surface of the folding roller 2 is provided with a plurality of paper suction holes 10 arranged at equal intervals along the circumference of the roller surface. The spacing between the equally spaced paper suction holes 9 of the paper feed roller 3 is both smaller than the spacing between the equally spaced paper cutters 4 of the paper cutting roller 1 and equal to the spacing between the equally spaced paper suction holes 10 of the folding roller 2.

[0026] As the paper feed roller 3 and the paper cutting roller 1 rotate synchronously, the paper head suction hole 7 of the paper cutting roller 1 and the paper head suction hole 9 of the paper feed roller 3 periodically reach the roller gap between the two rollers. Figure 4 、 Figure 5 , the paper head suction holes 7 of the paper cutting roller 1 that reach the roller gap stop sucking air and release the paper head it has sucked. The released paper head is immediately sucked by the paper head suction holes 9 of the paper feeding roller 3 that is also in the roller gap, so that the head of the paper 6 can be immediately transferred to the roller surface of the paper feeding roller 3 after being released by the paper cutting roller 1. The roller gap between the paper cutting roller 1 and the paper feeding roller 3 is narrow enough to ensure that the paper head released by the paper cutting roller 1 can be transferred to the paper feeding roller 3 in a very short or even negligible time, so that the paper head is always in a controllable state of being sucked by the paper cutting roller 1 or the paper feeding roller 3 during the process of transferring from the paper cutting roller 1 to the paper feeding roller 3. It should be noted that Figure 4 and Figure 2 The only difference is that the head of the paper 6 is transferred from the paper cutting roller 1 to the paper feeding roller 3. Figure 2 The status shown is Figure 4 The transition times between the states shown are extremely short and negligible.

[0027] As the paper feed roller 3 and the paper breaking roller 1 rotate synchronously, Figure 4 Arrive later Figure 6 As the position where the paper body suction hole of the paper breaking roller stops sucking air lags behind the position where the paper head suction hole of the paper breaking roller stops sucking air, Figure 6At the moment shown, although the head of the paper 6 has rotated along with the paper feed roller 3 , the paper body portion behind the head of the paper 6 is still sucked by the multiple paper body suction holes 8 on the paper breaking roller 1 .

[0028] As the paper breaking roller 1 rotates, Figure 6 Afterwards, they arrived Figure 7 、 Figure 8 The status shown. Figure 7 At the moment shown, the three paper body suction holes indicated by the number 8 have passed the suction stop position, so part of the paper body has been separated from the paper breaking roller 1. Figure 8 At the moment shown, the paper body suction hole closest to the paper end indicated by the number 8 has just reached the position where the suction stops. Figures 7 and 8 As shown, the suction is stopped in the order of first stopping the suction at the part closest to the paper head and last stopping the suction at the part closest to the paper tail, so that after the head of the paper is adsorbed by the paper feed roller 3, the paper body part behind the head is gradually separated from the paper breaking roller 1.

[0029] exist Figure 8 At the moment shown, the next sheet of paper 11 just repeats the previous sheet of paper 6. Figure 6 The status shown. Figures 8 to 9 In the continuous process shown, because the linear velocity of the paper feed roller 3 is lower than that of the paper cutter roller 1, the leading edge of the following sheet 11 overtakes the trailing edge of the preceding sheet 6, achieving a head-to-tail overlap effect where the leading edge of the following sheet overlaps the trailing edge of the preceding sheet. The overlap ratio between the leading and trailing sheets is determined by the diameter ratio of the paper cutter roller 1 to the paper feed roller 3. For example, if the overlapping portion of the leading and trailing sheets is to be 1 / 4 of the length of each sheet, the diameter ratio of the paper cutter roller 1 to the paper feed roller 3 should be 4:3. In other words, if the overlapping portion of the leading and trailing sheets is to be N / M of the sheet length, the diameter ratio of the paper cutter roller 1 to the paper feed roller 3 should be M:(MN).

[0030] See also Figure 1 , a paper pressing roller 12 is provided against the roller surface of the paper feeding roller 3. In the process of the paper passing through the paper feeding roller 3, as shown in FIG. Figures 7 to 11 As shown, the paper is pressed against the feed roller 3 by the press roller 12. The press roller 12 can be either a passive roller rotated by the feed roller 3 or an active roller rotated by a driving mechanism. Multiple press rollers 12 can be provided along the circumference of the feed roller 3.

[0031] See also Figure 9 、 Figure 10As the feed roller 3 and folding roller 2 rotate synchronously, the paper head suction holes 9 of the feed roller 3 and the paper suction holes 10 of the folding roller 2 periodically reach the nip between the two rollers. The paper head suction holes 9 of the feed roller 3 that reach the nip stop suctioning, releasing the top of the paper 6 they were holding. The released paper head is immediately attracted by the paper suction holes 10 of the folding roller 2, also located in the nip. This allows the top of the paper 6 to be immediately transferred to the surface of the folding roller 2 after being released by the feed roller 3. The gap between the feed roller 3 and folding roller 2 is sufficiently narrow to ensure that the paper head released by the feed roller 3 can be transferred to the folding roller 2 in an extremely short, even negligible, time. This ensures that the paper head remains controlled by either the feed roller 3 or the folding roller 2 during its transfer from the feed roller 3 to the folding roller 2.

[0032] Continue Figure 9 After that, the paper transferred to the folding roller 2 is as follows Figure 11 As shown, the paper towel continues to advance under the drive of the folding roller 2. When the overlapping sheets of paper pass through the roller gap of the two folding rollers, they are folded in a continuous "Z" shape to form a folded paper towel.

[0033] As a best practice, see Figure 1 A paper guide 13 is provided between the paper feed roller 3 and the folding roller 2 to guide the paper to separate from the roller surface of the paper feed roller 3. Figure 1 、 Figure 9 、 Figure 10 、 Figure 12 、 Figure 13 The roller surface of the paper feed roller 3 is provided with an annular groove 14 along the circumferential direction of the roller surface. The front guide end 13a of the paper guide 13 is hidden in the annular groove 14 at the roller gap between the paper feed roller 3 and the folding roller 2, and does not protrude from the roller surface of the paper feed roller 3. The paper guide 13 extends from the front guide end 13a along the rotation direction of the folding roller 2 to form an arcuate guide surface 13b facing the roller surface of the folding roller. The arcuate guide surface 13b is curved in a direction gradually away from the paper feed roller 3. Figures 9 to 11 During this process, the curved guide surface 13b of the paper guide 13 ensures that each sheet of paper can only leave the paper feed roller 3 after reaching the nip between the paper feed roller 3 and the folding roller 2. This compensates for the insufficient suction force of the folding roller 2 on the paper. Regardless of the speed of the paper feed roller 3 and the folding roller 2, the paper can be guaranteed to be transferred from the paper feed roller 3 to the folding roller 2. Of course, as a simplified embodiment, the paper guide 13 can also be omitted.

[0034] As a best practice, see Figure 1 From the cross section of the paper cutting roller 1, the roller surface of the paper cutting roller 1 is provided with a groove 14 between each paper head suction hole 7 and the first paper body suction hole 8 following the paper head suction hole 7. Figures 4 to 6 During the action, the groove 14 makes it easy for the paper to form a part near its head. Figure 6The smooth curved shape 6a shown in the figure prevents the paper from forming a crease at this position because of bending. Of course, as a simplified embodiment, there can also be no groove 14.

[0035] It should be noted that although the present invention requires that the paper suction holes 7 of the paper cutting roller 1 and the paper suction holes 9 of the paper feeding roller 3 can periodically reach the roller gap between the two rollers, it does not require that the number of the two must be equal. The number of the paper suction holes 7 on the paper cutting roller 1 arranged at equal intervals along the roller surface circumference and the number of the paper suction holes 9 on the paper feeding roller 3 arranged at equal intervals along the roller surface circumference can be equal (e.g. Figure 1 embodiment), or they may not be equal.

[0036] It should be noted that although the present invention requires that the paper suction holes 9 of the paper feed roller 3 and the paper suction holes 10 of the folding roller 2 can periodically reach the roller gap between the two rollers, it does not require that the number of the two holes must be equal. The number of the paper suction holes 9 of the paper feed roller 3 arranged at equal intervals along the circumference of the roller surface and the number of the paper suction holes 10 of the folding roller 2 arranged at equal intervals along the circumference of the roller surface can be equal (e.g. Figure 1 embodiment), or they may not be equal.

[0037] It should be noted that the paper head suction holes 9 on the paper feeding roller 3 can be arranged in groups. Figure 14 An embodiment of the paper head suction holes being arranged in groups is shown. Figure 14 The paper feeding roller 3 is arranged in such a way that each two closely adjacent paper head suction holes 9a and 9b form a group. The two paper head suction holes 9a and 9b in the same group start to suck air at the same time and stop sucking air at the same time. The function of the two paper head suction holes in each group is equivalent to Figure 1 The paper suction hole 9 on the paper feeding roller 3 in the embodiment of the present invention plays a role. Similarly, the paper suction holes 7 on the paper breaking roller 1 can also be arranged in groups. For the paper suction holes arranged in groups, the equidistant arrangement of the paper suction holes in the present invention means that the paper suction holes at corresponding positions in each group of paper suction holes are arranged in an equidistant manner. For example Figure 14 In the embodiment shown, all the paper suction holes 9a at corresponding positions in the four groups of paper suction holes are arranged at equal intervals, and all the paper suction holes 9b at corresponding positions in the four groups of paper suction holes are also arranged at equal intervals.

[0038] It should be noted that, in addition to Figure 12 、 Figure 13 In addition, each figure shows a schematic diagram of the structure viewed from the cross section of the roller body. In fact, when viewed from the cross section of the roller body, each paper head suction hole 7, paper body suction hole 8, and folding roller paper suction hole 10 are arranged in a row along a direction parallel to the roller body axis. For example, Figure 1Each paper head suction hole 9 seen from the cross section of the paper feed roller 3 is as follows Figure 13 Shown are arranged in a row along a direction parallel to the axis of the roller body.

[0039] The specific structure for controlling the paper head suction holes 7 and paper body suction holes 8 of the paper breaking roller 1, and for controlling the paper head suction holes 9 of the paper feeding roller 3 to start and stop suction at designated positions can be selected from existing technologies. For example, the structure for controlling the paper suction holes on the folding roller of an existing folding machine to start and stop suction, or the structure for controlling the suction holes on the rewinding roller of an existing paper roll rewinding machine to start and stop suction, can be adopted.

[0040] The above-described embodiments merely represent several implementations of the present invention. 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 a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

Claims

1. The paper material end-to-end splicing mechanism of the folding machine includes a paper cutting roller. The roller surface of the paper cutting roller is provided with multiple paper cutters protruding from the roller surface and arranged at equal intervals along the circumference of the roller surface. A scraper is provided near the paper cutting roller. Each time the paper cutting roller rotates one circle, each paper cutter takes turns to scrape against the scraper once, thereby cutting the continuous paper material passing between the paper cutting roller and the scraper into individual sheets. A folding roller is provided below the paper cutting roller. The roller surface of the folding roller is provided with multiple paper suction holes arranged at equal intervals along the circumference of the roller surface. Its characteristics are: A paper feed roller is provided which is close to the paper cutting roller and the folding roller. The paper cutting roller, the paper feed roller and the folding roller are parallel and rotate synchronously at equal angular velocities. The angular velocity direction of the paper feed roller is opposite to the angular velocity direction of the paper cutting roller and the folding roller. Looking at the cross section of the paper cutting roller, between every two adjacent paper cutters, there are a paper head suction hole and a plurality of paper body suction holes arranged in sequence in the opposite direction of the paper cutting roller's rotation. The paper head suction holes suck the head of the cut paper, while the paper body suction holes suck the paper body from the head to the tail of the cut paper. The diameter of the paper feed roller is smaller than that of the paper cutting roller. The roller surface of the paper feed roller is provided with a plurality of paper head suction holes arranged at equal intervals along the circumferential direction of the roller surface. The spacing of the paper head suction holes is smaller than the spacing of the paper cutting knives of the paper cutting roller and equal to the spacing of the paper suction holes of the folding roller. As the paper feed roller and the paper cutting roller rotate synchronously, the paper head suction holes of the paper cutting roller and the paper head suction holes of the paper feed roller periodically reach the roller gap between the two rollers. The paper head suction holes of the paper cutting roller that reach the roller gap stop suctioning and release the paper head they have sucked. The roller gap is so narrow that the released paper head can be immediately sucked by the paper head suction holes of the paper feed roller in the roller gap. The position where the paper body suction holes of the paper breaking roller stop suctioning lags behind the position where the paper head suction holes of the paper breaking roller stop suctioning. As the paper breaking roller rotates, each time the paper head sucked by the paper head suction holes of the paper breaking roller is transferred to the paper feeding roller, the multiple paper body suction holes sucking the paper will reach the position where they stop suctioning in sequence. The multiple paper body suction holes stop suctioning in sequence in the order of those closest to the paper head stopping suctioning first and those closest to the paper tail stopping suctioning last. As the paper feed roller and the folding roller rotate synchronously, the paper head suction holes of the paper feed roller and the paper suction holes of the folding roller periodically reach the roller gap between the two rollers. The paper head suction holes of the paper feed roller that reach the roller gap stop suctioning and release the paper head they have sucked. The roller gap is so narrow that the released paper head can be immediately sucked by the paper suction holes of the folding roller in the roller gap. A paper pressing roller is provided which abuts against the roller surface of the paper feeding roller. The paper pressing roller presses the paper onto the paper feeding roller when the paper passes through the paper feeding roller.

2. The paper material end-to-end overlapping mechanism of the folding machine according to claim 1, characterized in that: A paper guide is provided between the paper feed roller and the folding roller to guide the paper to separate from the roller surface of the paper feed roller. The roller surface of the paper feed roller is provided with an annular groove along the circumferential direction of the roller surface. The front guiding end of the paper guide is hidden in the annular groove at the roller gap between the paper feed roller and the folding roller without protruding from the roller surface of the paper feed roller. Starting from the front guiding end, the paper guide extends along the rotation direction of the folding roller to form an arcuate guiding surface facing the roller surface of the folding roller, and the arcuate guiding surface is curved in a direction gradually away from the paper feed roller.

3. The paper material end-to-end overlapping mechanism of the folding machine according to claim 1, characterized in that: From the cross section of the paper breaking roller, the roller surface of the paper breaking roller is provided with a groove between each of the paper head suction holes and the first paper body suction hole immediately following the paper head suction hole.

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