A folding machine and a paper towel folding method

Abstract

The present invention provides a folding machine, comprising: a main body having a cavity, the bottom surface of the main body being formed as a first working surface, and one side wall surface being formed as a second working surface; a first suction port and a blowing port formed on the first working surface, the blowing port being close to the second working surface; and a second suction port formed on the second working surface and close to the first working surface; wherein, the folding mechanism is configured to enable the second suction port to generate a first adsorption air pressure to adsorb the edge area of the first tissue paper in the stacked tissue papers, and drive the first tissue paper to lift by rotating the main body, so that the first tissue paper is separated from the next tissue paper, the first suction port can generate a second adsorption air pressure to adsorb the first tissue paper, and the blowing port can generate a blowing air pressure to blow the edge area of the first tissue paper to turn inward, and then the first tissue paper can be folded inward and pressed by resetting the main body. The present invention also provides a method for folding tissue paper.

Description

Technical Field

[0001] The present invention belongs to the technical field of household paper processing equipment, and particularly relates to a folding machine. The present invention also relates to a method for folding paper towels. Background Art

[0002] For the outermost paper towel in a common boxed facial tissue, that is, the first paper towel to be drawn during use, it is usually not folded. Since the opening of the tissue box is set in the middle of the upper end face of the packaging bag, after packaging, the extraction end of the first paper towel will be near the side edge of the tissue box packaging bag, and at the same time, the entire stacked paper towels fill the packaging bag, which makes it difficult to extract the first paper towel and is likely to cause damage to the packaging bag. To facilitate the extraction of the first paper towel, currently, a boxed facial tissue folding machine is usually used to fold the first paper towel during the folding process.

[0003] The boxed facial tissue folding machine belongs to the front-end equipment of the production line. Existing boxed facial tissue folding machines usually fold the first paper towel outwards. In the subsequent processes of the automated production line, the stacked paper towels to be packaged have a certain conveying speed, which will cause air flow around them, or when there is a certain air volume around the production line, it is very easy for the first paper towel folded outwards to float up, resulting in the first paper towel being scattered or the outward folding failing, affecting the stability of the subsequent packaging process. In addition, existing boxed facial tissue folding machines usually require processes such as folding - pressing - flipping to achieve the outward folding of the first paper towel. It not only has a complex structure and high cost, but also has a complex folding process, reducing the subsequent packaging efficiency.

[0004] In addition, although there are also folding machines in the prior art that fold paper towels based on the principles of adsorption and blowing, due to the fact that facial tissues have certain pores, this requires a high precision in controlling the air pressure for suction and blowing, thus increasing the production cost and the control difficulty of the folding machine, and it is easy for the adsorbed paper towel to break away during the suction process, resulting in the failure of paper folding. Summary of the Invention

[0005] Aiming at the above technical problems, the present invention aims to provide a folding machine that can quickly and effectively fold the first tissue paper in the stacked paper towels to be packaged inwards and press it tightly, which can effectively improve the paper folding efficiency and ensure the success rate of paper folding.

[0006] To this end, according to the first aspect of the present invention, there is provided a folding machine, comprising: a main body having a cavity, the bottom surface of the main body being formed as a first working surface, and one side wall surface being formed as a second working surface; a first suction port and a blowing port formed on the first working surface, the blowing port being close to the second working surface; and a second suction port formed on the second working surface and close to the first working surface; wherein, the second suction port is capable of generating a first adsorption air pressure to adsorb the edge area of the first tissue paper in the stacked tissue papers, and by rotating the main body, the first tissue paper is lifted outwards, so that the edge area of the first tissue paper is separated from the next tissue paper in the stacked tissue papers, the first suction port is capable of generating a second adsorption air pressure to adsorb the first tissue paper, and the blowing port is capable of generating a blowing air pressure to blow the edge area of the first tissue paper to turn inwards, and then by resetting the main body, the first tissue paper is pressed against the next tissue paper in the stacked tissue papers.

[0007] In one embodiment, it further comprises a paper separating mechanism arranged in the cavity, and a paper separating port for the paper separating mechanism to extend out is provided on the first working surface, and the paper separating port is between the first suction port and the blowing port.

[0008] The paper separating mechanism is configured to extend out of the paper separating port after the edge area of the first tissue paper turns inwards, so as to fold and press the first tissue paper inwards.

[0009] In one embodiment, a first suction cavity is provided in the cavity, the first suction port is communicated with the first suction cavity, and the first suction cavity is communicated with a gas source and capable of generating negative pressure, so as to enable the first suction port to generate a second adsorption air pressure to adsorb the first tissue paper.

[0010] In one embodiment, a second suction cavity is further provided in the cavity, the second suction port is communicated with the second suction cavity, and the second suction port is communicated with a gas source and capable of generating negative pressure, so as to enable the second suction port to generate a first adsorption air pressure to adsorb the edge area of the first tissue paper.

[0011] In one embodiment, a blowing cavity is further provided in the cavity, the blowing cavity is formed on the inner side wall of the first working surface and at one end close to the second suction cavity.

[0012] The blowing port is communicated with the blowing cavity, and the blowing cavity is communicated with a gas source and capable of generating positive pressure, so as to enable the blowing port to generate a blowing air pressure.

[0013] In one embodiment, an installation cavity for installing the paper separating mechanism is provided between the first suction cavity and the second suction cavity, and the paper separating opening is communicated with the installation cavity and is located between the first suction opening and the blowing opening.

[0014] In one embodiment, the paper separating mechanism is configured to include a rotating shaft, a rotating plate mounted on the rotating shaft, and a paper separating claw connected to the end of the rotating plate.

[0015] The paper separating mechanism can drive the rotating plate through the rotating shaft to drive the paper separating claw to extend out of the paper separating opening, so as to fold the edge area of the first tissue paper inward.

[0016] In one embodiment, the first working surface is configured to include a flat part and an inclined part, the first suction opening and the blowing opening are respectively arranged on the flat part and the inclined part, and the paper separating opening is arranged at the intersection of the flat part and the inclined part.

[0017] In one embodiment, the first working surface is configured to include a paper pressing plane in the same plane.

[0018] In one embodiment, it further includes a pneumatic control unit for separately controlling the air pressure in the first suction cavity, the blowing cavity and the second suction cavity.

[0019] According to the second aspect of the present invention, a tissue paper folding method is further provided, including the following steps:

[0020] Adsorb the edge area of the first tissue paper in the stacked tissue papers to separate the edge area of the first tissue paper from the next tissue paper in the stacked tissue papers;

[0021] Keep adsorbing the edge area of the first tissue paper and drive the first tissue paper to turn outward by a predetermined angle;

[0022] Adsorb the middle area of the first tissue paper;

[0023] Release the adsorption of the edge area of the first tissue paper, and at the same time blow the edge area of the first tissue paper to turn inward;

[0024] Press the first tissue paper inward to press the first tissue paper against the next tissue paper in the stacked tissue papers, so as to complete the inward folding of the edge area of the first tissue paper.

[0025] Compared with the prior art, the advantages of the present application are as follows:

[0026] The folding machine according to the present invention can quickly and effectively fold the first tissue paper in the stacked tissue papers to be packaged inward and press it, so as to avoid the first tissue paper flying up in the subsequent packaging process, and can make the extraction end of the first tissue paper be in the middle position (i.e., the opening position) of the packaging bag after the packaging is completed, which is very convenient for extracting and using the first tissue paper. At the same time, using this folding machine can effectively simplify the folding process, which is very beneficial to improving the folding efficiency of the stacked tissue papers and ensuring the folding success rate. In addition, this folding machine has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described below with reference to the drawings.

[0028] Figure 1 Schematically shows the structure of the first embodiment of the folding machine according to the present invention.

[0029] Figures 2 to 9 Schematically shows Figure 1 the working process of the shown folding machine.

[0030] Figure 10 Schematically shows the structure of the second embodiment of the folding machine according to the present invention.

[0031] In this application, all the drawings are schematic drawings, only used to illustrate the principle of the present invention, and are not drawn according to the actual ratio. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The present invention will be introduced below through the drawings.

[0033] For the convenience of understanding, the directional terms or qualifiers "upper", "lower", etc. in this application are all for the reference of the attached Figure 1 drawings, and are only used to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0034] Figure 1 Schematically shows the structure of the folding machine 100 according to the present invention. As Figure 1 shown, the folding machine 100 includes a body 1 having a cavity, the bottom surface of the body 1 forms a first working surface 11, and a side wall surface of the body 1 ( Figure 1The right side wall surface) is formed as the second working surface 12. The folding machine 100 further includes a first suction port 21 and a blowing port 31 formed on the first working surface 11, and a second suction port 71. The first suction port 21 and the blowing port 31 are formed on the first working surface 11, and the blowing port 31 is arranged at a position close to the second working surface 12. The second suction port 71 is formed on the second working surface 12 and is arranged at a position close to the first working surface 11. The second suction port 71 can generate a first adsorption air pressure to adsorb the edge area of the first tissue paper 61 in the stacked tissue papers 6, and drive the first tissue paper 61 to lift outwards by rotating the body 1, so that the edge area of the first tissue paper 61 is separated from the next tissue paper in the stacked tissue papers 6, realizing page separation. The first suction port 21 can generate a second adsorption air pressure to adsorb the middle area of the first tissue paper 61, specifically, the area of the first tissue paper 61 close to the middle crease. The blowing port 31 can generate a blowing air pressure to blow the edge area of the first tissue paper 61 to turn inwards, so that the edge area of the first tissue paper 61 hangs, and then press the first tissue paper 61 against the next tissue paper in the stacked tissue papers 6 by resetting the body 1. In this application, the edge area of the first tissue paper 61 refers to the edge of the end of the tissue paper that is drawn when in use.

[0035] In one embodiment, the body 1 can be configured as a housing generally in the shape of a cuboid. The body 1 extends longitudinally for a certain length. For the convenience of description, the Figure 1 horizontal direction in is defined as the transverse direction, the vertical direction is defined as the vertical direction, and the direction perpendicular to the paper surface is defined as the longitudinal direction. Figure 1 Schematically shows a cross-sectional view of the body 1 in the longitudinal direction.

[0036] According to the present invention, the folding machine 100 further includes a paper dialing mechanism 4 arranged in the cavity. A paper dialing port 41 for the paper dialing mechanism 4 to extend out is provided on the first working surface 11, and the paper dialing port 41 is located between the first suction port 21 and the blowing port 31. The paper dialing mechanism 4 is configured to be able to extend out of the paper dialing port 41 after the edge area of the first tissue paper 61 turns inwards, so as to fold and press the first tissue paper 61 inwards.

[0037] In one embodiment, as Figure 1 shown, the paper dialing mechanism 4 includes a rotating shaft (not shown), a rotating plate 42 installed on the rotating shaft, and a paper dialing claw 43 connected to the end of the rotating plate 42. The paper dialing mechanism 4 can drive the rotating plate 42 to drive the paper dialing claw 43 to extend out of the paper dialing port 41 through the rotating shaft, so as to fold the edge area of the first tissue paper 61 inwards. The paper dialing port 41 is preferably set as a plurality of through holes evenly spaced along the longitudinal direction of the first working surface 11. The paper dialing claw 43 can be configured as an arc-shaped plate, a polygon folding plate (a partial structure with a polygon cross-section), a straight plate and other structures. That is, as long as the paper dialing claw can fold the hanging first tissue paper 61 inwards.

[0038] The first end of the rotating plate 42 is configured as an annular connecting portion for connecting with the rotating shaft. One end of the rotating shaft is provided with a driving mechanism (not shown) for driving its rotation. The driving mechanism is, for example, a driving motor and a controller. The first end of the rotating plate 42 is mounted on the rotating shaft through the annular connecting portion, and the rotating shaft can drive the rotating plate 42 to rotate. Thus, by controlling the rotation of the rotating shaft through the driving mechanism, the pawl 43 can be extended or retracted from the paper feeding port 41.

[0039] As Figure 1 shown, a first suction cavity 2 is provided in the cavity of the main body 1. The first suction port 21 is communicated with the first suction cavity 2. The first suction cavity 2 is communicated with a gas source (not shown) and can generate negative pressure, so that a second adsorption air pressure can be generated at the first suction port 21. The first suction cavity 2 extends along the longitudinal direction of the main body 1. The gas source can be connected to the longitudinal two ends of the main body 1 through a gas pipeline, for example.

[0040] Preferably, the first suction port 21 is configured as a through hole penetrating the first working surface 11. There are multiple first suction ports 21, and the multiple first suction ports 21 are evenly distributed in the transverse and longitudinal directions. In Figure 1 the shown embodiment, two columns of first suction ports 21 are spaced apart in the transverse direction, and the multiple first suction ports 21 in each column are evenly spaced apart in the longitudinal direction. Thus, the multiple first suction ports 21 form an adsorption area on the first working surface 11.

[0041] Since the tissue paper has certain air permeability, during actual operation, the pressure of the first suction cavity 2 can be adjusted according to actual needs, so as to form a second adsorption air pressure at the first suction port 21. After the first tissue paper 61 is folded inward through the paper feeding mechanism 4, the second adsorption air pressure of the first suction port 21 can penetrate through the part of the first tissue paper 61 that is in close contact with the first working surface, and adsorb the inwardly folded edge area to ensure that the edge area of the first tissue paper 61 remains in a folded state. According to the present invention, as Figure 1 shown, a second suction cavity 7 is further provided in the cavity of the main body 1. The second suction port 71 is close to the first working surface 11, that is, the second suction port 71 is arranged at a position close to the lower edge of the second working surface 12. The second suction port 71 is communicated with the gas source and can generate negative pressure, so that a first adsorption air pressure can be generated at the second suction port 71 to adsorb the edge area of the first tissue paper 61.

[0042] Due to the certain air permeability of the tissue paper, during actual operation, the pressure in the second suction cavity 7 can be adjusted according to actual needs, so as to form a first adsorption air pressure and air flow at the second suction port 71. Thus, the first tissue paper 61 can be deformed, and then the edge of the first tissue paper 61 can be adsorbed and held. At the same time, it can avoid adsorbing the next tissue paper in the stacked tissue papers 6. Then, by rotating the body 1, the first tissue paper 61 can be lifted, so as to separate the first tissue paper 61 from the next tissue paper in the stacked tissue papers 6, thereby achieving page separation.

[0043] According to the present invention, as Figure 1 shown, a blowing cavity 3 is further provided in the cavity. The blowing cavity 3 is formed on the inner side wall of the first working surface 11 and is at one end close to the second suction cavity 7. The first suction cavity 2 extends longitudinally along the body 1. The blowing port 31 is communicated with the blowing cavity 3. The blowing cavity 3 is communicated with a gas source and can generate a positive pressure, so that a blowing air pressure can be generated at the blowing port 31. The blowing port 31 inclines towards the first suction port 21, and its inclination angle can be set, for example, to 30° - 40°. In this way, it is particularly conducive to blowing the edge area of the first tissue paper 61 to turn inwards and hang down.

[0044] As Figure 1 shown, an installation cavity 5 for installing the paper separating mechanism 4 is further provided in the cavity of the body 1. The installation cavity 5 is arranged between the first suction cavity 2 and the second suction cavity 7. The paper separating port 41 is communicated with the installation cavity 5 and is between the first suction port 21 and the blowing port 31. The installation cavity 5 extends longitudinally along the body 1. There are multiple paper separating mechanisms 4, and they are evenly spaced along the longitudinal direction and installed inside the installation cavity 5.

[0045] The first working surface 11 and the second working surface 12 can be distributed at a certain angle, for example, it can be set to 80° - 90°. Preferably, the first working surface 11 and the second working surface 12 are vertically distributed. In this way, the page separation of the first tissue paper 61 can be effectively achieved.

[0046] According to the first embodiment of the present invention, as Figure 1 shown, the first working surface 11 can be configured to include a flat part and an inclined part. The first suction port 21 and the blowing port 31 are respectively arranged on the flat part and the inclined part, and the paper separating port 41 is arranged at the intersection of the flat part and the inclined part. Preferably, the transverse length of the flat part is greater than the transverse length of the inclined part.

[0047] When the folder 100 absorbs the first sheet 61 of the stacked tissue paper 6, this structure of the first working surface 11 greatly facilitates paging of the first sheet 61. Furthermore, by ensuring that the intersection of the flat and inclined portions first contacts the first sheet 61, the edge of the first sheet 61 tends to tilt upward, which greatly facilitates the second suction port 71 to absorb the edge of the first sheet 61, further promoting paging of the first sheet 61. This effectively improves the efficiency of the folder 100 and ensures a high success rate in stacking.

[0048] According to the second embodiment of the present invention, Figure 10 As shown, the first working surface 110 of the folding machine 200 can be constructed as a plane. This structure of the first working surface 110 can also complete the suction paging and folding of the first paper 61.

[0049] According to the present invention, the folding machine 100 further includes an air pressure control unit (not shown), which is used to separately control the air pressures in the first suction cavity 2, the blowing cavity 3, and the second suction cavity 7.

[0050] In addition, the folding machine 100 further includes a transmission mechanism (not shown), which is used to drive the body 1 to rotate and drive the body 1 to move in three-dimensional space to move it closer to or away from the stacked tissues 6 to be packaged.

[0051] According to one embodiment of the present invention, for some extreme working conditions, such as when the conveying speed of the stacked tissue paper 6 is too fast or the surrounding air volume is too large, the air outlet 31 can also blow out a moist airflow to humidify the first sheet of tissue paper 61. For example, the air source can be controlled to fill the blowing cavity 3 with humidified gas, so that the air outlet 31 can blow out a moist airflow toward the first sheet of tissue paper 61, moistening the folding area of the first sheet of tissue paper 61. On the one hand, the weight of the folding area of the first sheet of tissue paper 61 can be increased, making it easier to drape and blow it inward to fold. On the other hand, in the subsequent compacting process, the first sheet of tissue paper 61 folded inward can be bonded to the second sheet of tissue paper in the stacked tissue paper 6, thereby improving the close fit between the two and further enhancing the folding effect of the first sheet of tissue paper 61, which is very helpful in preventing it from flying or scattering in the subsequent packaging process.

[0052] The specific working process of the folding machine 100 of the present invention will be described in detail below with reference to the accompanying drawings.

[0053] In actual operation, the folding machine 100 can be used in an automated tissue production line and as a part of the tissue production process. Figure 1As shown, the stacked tissue paper 6 to be packaged moves through the production line to a position directly below the folding machine 100 to align with the folding machine 100, so that the first tissue paper 61 of the stacked tissue paper 6 to be packaged is directly below the first working surface 11 of the body 1. At this time, no air pressure is introduced into the first suction cavity 2, the blowing cavity 3, and the second suction cavity 7.

[0054] As Figure 2 shown, the control drive mechanism drives the folding machine 100 to move downward to approach the stacked tissue paper 6. For the convenience of adsorbing the first tissue paper 61 to achieve page separation, preferably, the body 1 of the folding machine 100 can be tilted at a certain angle, so that the intersection of the flat part and the inclined part of the first working surface 11 contacts the first tissue paper 61 first, thereby pressing down on the first tissue paper 61, so that the edge area of the first tissue paper 61 has a slight upward warping effect, which is very convenient for adsorption and can further improve the page separation effect. Figure 2 The direction indicated by the arrow a in

[0055] As Figure 3 shown, when the folding machine 100 moves downward until the first working surface 11 contacts the first tissue paper 61 of the stacked tissue paper 6, the pressure control unit controls the generation of negative pressure in the second suction cavity 7 to form a first adsorption air pressure at the second suction port 71, and then the second suction port 71 adsorbs the edge of the first tissue paper 61 and makes it turn up and fold, thereby separating the first tissue paper 61 from the next tissue paper in the stacked tissue paper 6, achieving page separation of the first tissue paper 61 and maintaining adsorption. It should be noted that a part of the edge of the first tissue paper 61 is exposed laterally relative to the first working surface 11 to facilitate the adsorption of the first tissue paper 61 by the second suction port 71.

[0056] After that, as Figure 4 shown, the drive mechanism controls the overall counterclockwise rotation of the body 1 by 90 degrees, so that the first working surface 11 rotates counterclockwise by 90 degrees. Thus, the body 1 adsorbs the first tissue paper 61 through the second suction port 71 and rotates counterclockwise by 90 degrees.

[0057] After that, as Figure 4 shown, the pressure control unit controls the generation of negative pressure in the first suction cavity 2 to form a second adsorption air pressure at the first suction port 21, so that the first suction port 21 adsorbs the first tissue paper 61. Of course, it can be understood that the first suction port 21 can also start the adsorption pressure during the rotation of the body 1 to adsorb the first tissue paper 61.

[0058] Then, the pressure control unit closes the pressure in the second suction cavity 7, and at the same time controls the generation of positive pressure in the blowing cavity 3 to generate a blowing pressure at the blowing port 31. As Figure 5As shown, at this time, the second suction port 71 loses the adsorption on the edge of the first tissue paper 61, and the edge area of the first tissue paper 61 turns inward (clockwise) under the action of the blowing pressure and is in a hanging state. During this process, the first suction port 21 maintains the adsorption on the first tissue paper 61.

[0059] After that, as Figure 6 shown, the first suction port 21 still maintains the adsorption on the first tissue paper 61. At the same time, the paper-pushing mechanism 4 is controlled to rotate through the driving mechanism, so that the paper-pushing claw 43 extends out of the paper-pushing port 41, so that the edge area of the first tissue paper 61 folds inward, and the paper-pushing claw 43 can cooperate with the first working surface 11 to form a pressing and folding on the first tissue paper 61. After that, the paper-pushing claw 43 quickly retracts. At the same time, the pressure in the blowing cavity 7 is closed through the pneumatic control unit. Thus, the crease of the first tissue paper 61 folding inward is formed at a position close to the paper outlet 41.

[0060] After that, as Figure 7 shown, the whole body 1 is controlled to rotate 90 degrees to reset through the transmission mechanism. During this process, since the adsorption air flow of the first suction port 21 can pass through the part where the first tissue paper 61 is in close contact with the first working surface 11 and adsorb the edge area of the first tissue paper 61 folded inward, so as to keep the edge area of the first tissue paper 61 in a folded state all the time. Then control the body 1 to press down the first tissue paper 61 to ensure the folding effect, so as to realize the inward folding of the first tissue paper 61. Thus, the inward folding of the first tissue paper 61 is realized. After that, the pressure in the first suction cavity 2 is closed through the pneumatic control unit, and the adsorption of the first suction port 21 on the first tissue paper 61 is removed. Figure 7 The arrow b in

[0061] After that, as Figure 8 and Figure 9 shown, the body 1 is controlled to move upward away from the stacked tissue papers 6 through the transmission mechanism, and the stacked tissue papers 6 move to the next process through the production line. Figure 8 The arrow c in Figure 8 and Figure 9 shown indicates the upward movement direction of the body 1, and the arrows d in

[0062] shown indicate the movement direction of the stacked tissue papers 6 to the next process. Thus, the folding machine 100 completes the inward folding of the first tissue paper 61 in the stacked tissue papers 6.In the second embodiment, for the folding machine 200 with the first working surface 110 configured as a flat surface, its working principle and process are the same as those in the first embodiment, which will not be elaborated here.

[0063] Of course, it can be understood that in the second embodiment, since the first working surface 110 is configured as a flat surface, when controlling the downward movement of the folding machine 200, the first working surface 110 is controlled to remain horizontal, and it is ensured that a part of the edge of the first tissue paper 61 is exposed transversely relative to the first working surface 110. Similarly, the edge area of the first tissue paper 61 is adsorbed through the second suction port 710, so that the first tissue paper 61 is separated into pages. Moreover, when the main body 10 presses the stacked tissue papers 6, the intersection of the first working surface 110 and the second working surface 120 can also cause the edge area of the first tissue paper 61 to slightly tilt upward, so as to facilitate the second suction port 710 to adsorb the first tissue paper 61.

[0064] The folding machine 100 according to the present invention can quickly and effectively fold the first tissue paper 61 in the stacked tissue papers 6 to be packaged inward and press it tightly, so as to avoid the first tissue paper 61 flying up in the subsequent packaging process, and can make the extraction end of the first tissue paper 61 be in the middle position (i.e., the opening position) of the packaging bag after the packaging is completed, which is very convenient for extracting and using the first tissue paper 61. At the same time, using this folding machine 61 can effectively simplify the folding process, which is very beneficial to improving the folding efficiency of the stacked tissue papers 6 and ensuring the folding success rate. In addition, the folding machine 100 has a simple structure and low cost.

[0065] According to the present invention, a tissue paper folding method is also provided. The specific steps of this tissue paper folding method are introduced below.

[0066] First, adsorb the edge area of the first tissue paper 61 in the stacked tissue papers 6 to separate the edge area of the first tissue paper 61 from the next tissue paper in the stacked tissue papers 6.

[0067] Then, maintain the adsorption of the edge area of the first tissue paper 61 and drive the first tissue paper 61 to flip outward by a predetermined angle. The predetermined angle here can be, for example, 90 degrees. Of course, the predetermined angle can also be slightly larger than 90 degrees or slightly smaller than 90 degrees. The outward flip here means that the first tissue paper 61 flips in the direction away from the next tissue paper in the stacked tissue papers 6.

[0068] After that, adsorb the middle area of the first tissue paper 61 and maintain the adsorption of this area of the first tissue paper 61. The middle area here refers to the middle position of the first tissue paper 61 in the unfolded state as a whole, that is, the crease area near the edge of the stacked tissue papers 6 as a whole in the state of the stacked tissue papers 6. Of course, it can be understood that the middle area of the first tissue paper 61 can also be adsorbed while driving the first tissue paper 61 to flip outward.

[0069] After that, the adsorption on the edge area of the first tissue paper 61 is released, and at the same time, the edge area of the first tissue paper 61 is blown to turn inward. Since the adsorption on the edge area of the first tissue paper 61 is released, the edge area of the first tissue paper 61 loses the adsorption force and hangs downwards, and at this time, it is more conducive to blowing the edge area of the first tissue paper 61 to turn inward. The inward turning here means that the first tissue paper 61 turns towards the direction close to the next tissue paper in the stacked tissue papers 6.

[0070] After that, the first tissue paper 61 is pressed inward to press the first tissue paper 61 against the next tissue paper in the stacked tissue papers 6, so that the edge area of the first tissue paper 61 is folded inward.

[0071] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0072] In addition, in the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Finally, it should be noted that the above are only the preferred implementation schemes of the present invention and do not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the foregoing implementation schemes, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. 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. A folding machine comprising: A body (1) having a cavity, wherein the bottom surface of the body (1) is formed as a first working surface (11), and a side wall surface is formed as a second working surface (12); a first air suction port (21) and an air blowing port (31) formed on the first working surface (11), wherein the air blowing port (31) is close to the second working surface (12); and a second air intake port (71) formed on the second working surface (12) and close to the first working surface (11); The second suction port (71) is capable of generating a first suction air pressure to absorb the edge area of the first sheet of paper (61) in the stack of paper towels (6), and by rotating the body (1), the first sheet of paper (61) is lifted outward, thereby separating the edge area of the first sheet of paper (61) from the next sheet of paper in the stack of paper towels (6). The first suction port (21) is capable of generating a second adsorption air pressure to adsorb the first sheet of tissue paper (61), and the blowing port (31) is capable of generating a blowing air pressure to blow the edge area of the first sheet of tissue paper (61) inwardly, thereby pressing the first sheet of tissue paper (61) onto the next sheet of tissue paper in the stacked tissue paper (6) by resetting the body (1); The paper-moving mechanism (4) is arranged in the cavity, and a paper-moving opening (41) for the paper-moving mechanism (4) to extend is provided on the first working surface (11), and the paper-moving opening (41) is located between the first air suction opening (21) and the air blowing opening (31). The paper-moving mechanism (4) is configured to extend from the paper-moving opening (41) after the edge area of the first sheet of paper (61) is turned inward, so as to fold the first sheet of paper (61) inward and press it tightly. The first working surface (11) is constructed to include a plane portion and an inclined portion, the first air suction port (21) and the air blowing port (31) are respectively arranged on the plane portion and the inclined portion, and the paper removal port (41) is arranged at the intersection of the plane portion and the inclined portion.

2. The folding machine according to claim 1, characterized in that A first suction cavity (2) is provided in the cavity, the first suction port (21) is in communication with the first suction cavity (2), the first suction cavity (2) is in communication with an air source and is capable of generating negative pressure, thereby enabling the first suction port (21) to generate a second adsorption air pressure to adsorb the first piece of paper (61).

3. The folding machine according to claim 2, characterized in that A second suction cavity (7) is further provided in the cavity, and the second suction port (71) is in communication with the second suction cavity (7). The second suction port (71) is in communication with an air source and is capable of generating negative pressure, thereby enabling the second suction port (71) to generate a first adsorption air pressure to adsorb the edge area of the first sheet of paper (61).

4. The folding machine according to claim 3, characterized in that A blowing cavity (3) is also provided in the cavity. The blowing cavity (3) is formed on the inner side wall of the first working surface (11) and is located at one end close to the second suction cavity (7). The blowing port (31) is in communication with the blowing cavity (3), and the blowing cavity (3) is in communication with an air source and is capable of generating positive pressure, thereby enabling the blowing port (31) to generate blowing air pressure.

5. The folding machine according to claim 3, characterized in that A mounting cavity (5) for mounting the paper-moving mechanism (4) is provided between the first air suction cavity (2) and the second air suction cavity (7); the paper-moving port (41) is communicated with the mounting cavity (5) and is located between the first air suction port (21) and the air blowing port (31).

6. The folding machine according to claim 1 or 5, characterized in that: The paper-moving mechanism (4) is constructed to include a rotating shaft, a rotating plate (42) mounted on the rotating shaft, and a moving claw (43) connected to the end of the rotating plate (42). The paper-moving mechanism (4) can drive the rotating plate (42) via the rotating shaft to drive the moving claw (43) to extend out of the paper-moving opening (41), thereby folding the edge area of the first sheet of paper (61) inward.

7. The folding machine according to claim 1, wherein: The first working surface (11) is configured to include a paper pressing surface located in the same plane.

8. A paper towel folding method, applied to the folding machine according to any one of claims 1 to 7, comprising the following steps: Adsorbing the edge area of a first sheet of tissue paper (61) in the stack of tissue paper (6) to separate the edge area of the first sheet of tissue paper (61) from the next sheet of tissue paper in the stack of tissue paper (6); Maintaining adsorption on the edge area of the first sheet of paper (61), and driving the first sheet of paper (61) to flip outwards at a predetermined angle; Adsorbing the middle area of the first piece of paper (61); releasing the adsorption on the edge area of the first sheet of paper (61), and simultaneously blowing the edge area of the first sheet of paper (61) to turn inward; The first sheet of tissue paper (61) is pressed inwardly and downwardly to press the first sheet of tissue paper (61) against the next sheet of tissue paper in the stacked tissue paper (6), thereby completing the inward folding of the edge area of the first sheet of tissue paper (61).

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