A tissue folding mechanism

Abstract

The present invention discloses a tissue paper inner folding mechanism, comprising a folding plate, a material suction piece and a top pressing piece; the material suction piece corresponds to the end close to the folding edge of the first tissue paper up and down, the bottom surface of the material suction piece is the material suction surface, and the material suction piece is provided with a through hole for the top pressing piece to pass through; the folding plate is arranged at the end close to the side edge of the first tissue paper, the folding plate swings relative to the material suction surface of the material suction piece and can support the top pressing piece; the top pressing piece is arranged at the end close to the folding edge and rises and falls relative to the material suction piece; when folding inward, the first tissue paper The end close to the folding edge is sucked by the suction piece, and the end of the first paper towel that is not sucked naturally droops; then the folding plate swings toward the suction surface of the suction piece, pushing the drooping first paper towel to fold and fit toward the sucked end; then the pressing piece passes through the through hole to press the first paper towel after inward folding, so that the surface part of the first paper towel and the inward folded part are pressed together to maintain the inward folded state; the problems of inward folding curling and turning back after inward folding are solved, and the inward folding quality and effect are greatly improved.

Description

Technical Field

[0001] The present invention relates to an improved invention of paper towel processing equipment, in particular to a paper towel inner folding mechanism. Background Art

[0002] The packaging film or packaging paper box of the pull-out paper towel adopts an easy-tear opening with a small opening. The side of the first paper towel is close to the side wall and fits with the second paper towel. When the first paper towel is pulled out, it is easy to pull out the next paper towel or multiple paper towels together, causing waste.

[0003] In order to improve the above situation, a folding mechanism is used to fold the side edge of the first flat paper towel toward the folding edge on the other side, see the attached Figure 1 After folding, the folded portion of the first paper towel is at the easy-tear opening and the first paper towel forms a double-layer effect, which makes it easy for the user to grab the first paper towel.

[0004] At present, there are several problems with the paper towel inner folding mechanism: 1. The first paper towel after folding is easy to turn back, resulting in folding failure; 2. Curling occurs during the folding process, resulting in folding failure. Therefore, the existing paper towel inner folding mechanism has a high failure rate and poor folding effect. Summary of the invention

[0005] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a paper towel inner folding mechanism with high yield and good folding effect.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: the paper towel inner folding mechanism is characterized by comprising a folding plate, a material suction piece and a top pressure piece;

[0007] The suction piece corresponds to the end close to the folded edge of the first paper towel, the bottom surface of the suction piece is the suction surface, and the suction piece is provided with a through hole for the top pressure piece to pass through;

[0008] The folding plate is arranged at the end close to the side edge of the first paper towel, and the folding plate swings relative to the suction surface of the suction member and can support the top pressure member;

[0009] The pressing member is arranged at the end close to the folding edge and moves up and down relative to the material suction member;

[0010] When folding inward, the end of the first paper towel close to the folding edge is sucked by the suction piece, and the end of the first paper towel that is not sucked naturally droops; then the folding plate swings toward the suction surface of the suction piece, pushing the drooping first paper towel to fold and fit toward the sucked end; then the pressing piece passes through the through hole to press the first paper towel after folding inward.

[0011] The present invention folds the first paper towel inward through the cooperation of the suction piece and the folding plate. The folded part of the first paper towel is flattened under the suction piece and is dragged by the folding plate. The folding plate forms an indentation between the folded part and the surface layer of the first paper towel and makes the folded part smoother. At the same time, the pressing piece presses the first paper towel after folding, so that the surface layer and the folded part of the first paper towel are pressed together. In this way, when the folding plate is reset, the first paper towel after folding will not be brought back but will remain in the folded state. Moreover, the folded paper towel is not easy to flip back when entering the next process, which solves the problems of folding curling and flipping back after folding in the background technology, and greatly improves the folding effect and success rate.

[0012] Preferably, the folding plate and the top pressure piece are both arranged on the material suction piece, and the material suction piece is swingably arranged above the paper towel;

[0013] When folding inward, the end of the suction piece provided with the folding plate is lifted upward; after the folding is completed, the suction piece is swung downward, and the suction surface of the suction piece approaches or presses the paper towel below. By swinging the suction piece, the side edge of the first paper towel is lifted upward, providing space for the first paper towel to be folded inward.

[0014] Preferably, the suction member is connected to a pre-suction member, and the pre-suction member is close to the side end of the first paper towel;

[0015] After the paper towels are in place, the pre-absorption piece sucks air, and the side end of the first paper towel is sucked by the pre-absorption piece; then the suction piece is lifted up, the suction piece sucks air, and the pre-absorption piece stops sucking air, and the end of the first paper towel close to the folding edge is sucked by the suction piece, and the end of the first paper towel that is not sucked naturally droops. The air permeability of the paper towel is good. If the adsorption force is too large, the upper and lower layers of paper towels will be adsorbed. If the adsorption force is too small, the paper towel will be separated or shifted when folded inward. The present invention absorbs the first paper towel through the pre-absorption piece, and absorbs it through the suction piece when folding inward. Different paper suction effects are achieved through the two suction pieces to ensure the quality of the inward folding.

[0016] Preferably, the pre-absorption surface of the pre-absorption member is tilted upward toward the end of the side edge of the first paper towel, and the pre-absorption surface forms an angle with the material absorption surface of the absorption member. Without changing the negative pressure suction of the pre-absorption member and the material absorption member, the inclined pre-absorption surface makes the distance from the first paper towel large, and the absorption force is weakened. The suction force of the pre-absorption surface can absorb the side edge of the first paper towel, but is not enough to absorb the second paper towel below the first paper towel, so that only the first paper towel is absorbed each time.

[0017] Preferably, the bottom surface of the pre-absorption member is flush with the material absorption surface of the material absorption member;

[0018] When the pre-absorbent member absorbs materials, the bottom surfaces of the pre-absorbent member and the material absorbing member are parallel to the horizontal plane; when the folding plate is folded, the bottom surfaces of the pre-absorbent member and the material absorbing member form an angle with the horizontal plane.

[0019] Preferably, the pre-absorption member is provided with a plurality of first paving grooves for paving the folding plate, the folding plate is provided with a plurality of second paving grooves for paving the pre-absorption member, and the folding plate part and the pre-absorption member are alternately staggered. The folding plate and the pre-absorption member are both at the side edge of the first paper towel, and the alternating staggered arrangement allows the two to fully cover the side edge of the first paper towel without interfering with each other.

[0020] Preferably, the paper towel inner folding mechanism further includes a paper stopper that moves up and down on the frame;

[0021] The paper towel is transported to the inward folding station, and the paper stopper moves down; after the paper towel is folded inward, the paper stopper moves up to make way. The paper stopper accurately determines the longitudinal position of the paper towel, improving the inward folding effect of the first paper towel.

[0022] Preferably, the folding plate is mounted on a rotating shaft, the rotating shaft is rotatably arranged on the material suction member, and the rotating shaft is arranged between the pre-suction member and the material suction member;

[0023] The rotating shaft is connected to a driving component 1 that drives it to rotate forward and reversely; the driving component 1 includes a gear, a rack and a cylinder that drives the rack to move longitudinally; a longitudinally arranged guide rail is installed on the material suction member, the rack is slidably arranged on the guide rail, the gear is installed on the rotating shaft, and the rack is meshed with the gear. The driving component 1 has a compact structure and a small volume, is easy to install and is suitable for the forward and reverse rotation of the rotating shaft.

[0024] Preferably, the material suction member is swingably arranged on a lifting seat.

[0025] Before the paper towel is in place, the suction piece is in a high position; after the paper towel is in place, the lifting seat moves down with the suction piece, and the suction surface of the suction piece approaches the paper towel or presses the paper towel; after the paper towel is folded inward, the lifting seat moves up with the suction piece to reset. The suction piece moves up to make way for the paper towel, so that the paper towel can enter the folding station smoothly, and the suction piece moves down to approach the paper towel to absorb the first paper towel or send the first paper towel after folding inward to the paper towel below. It can also make the paper towel flat and deepen the fold of the paper towel by pressing down.

[0026] Preferably, the lifting seat is slidably arranged on a linear guide rail, the linear guide rail is vertically arranged on a frame, and a driving component 2 for driving the lifting seat to rise and fall is arranged on the frame;

[0027] The second driving component includes a transmission belt, a transmission wheel and a motor, the lifting seat is connected to the transmission belt, the transmission belt is arranged on the transmission wheel, the transmission wheel is connected to the motor, and the motor is installed on the frame;

[0028] The material suction member is rotatably connected to the lifting seat via a second rotating shaft, and a second cylinder driving the material suction member to swing is installed on the lifting seat;

[0029] The pressing end of the pressing member is in an inverted cone shape;

[0030] The pressing pieces are arranged in a plurality and arranged in a line in the horizontal direction. The pressing surface between the pressing pieces and the paper towel is small, which not only improves the pressing effect, prevents the paper towel from turning back after being folded inward, but also reduces the marks of pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the first tissue being folded outward.

[0032] Figure 2 It is a diagram of the steps of folding a paper towel inwardly according to the present invention.

[0033] Figure 3 It is a schematic diagram of the structure of the present invention.

[0034] Figure 4 It is a partial schematic diagram of the present invention.

[0035] Figure 5 It is a cross-sectional view of the present invention.

[0036] Figure 6 For the present invention Figure 5 Enlarged view of point A.

[0037] Figure 7 It is a schematic diagram of the material suction piece and the folding plate of the present invention.

[0038] Attached figures: 1. side edge of first paper towel; 2. first paper towel; 3. second paper towel; 4. folded edge of first paper towel; 5. suction member; 6. pre-suction member; 7. folding plate; 8. top pressure member; 9. through hole; 10. rotating shaft; 11. guide rail; 12. gear; 13. rack; 14. first cylinder; 15. transmission belt; 16. transmission wheel; 17. linear guide rail; 18. lifting seat; 19. second cylinder; 20. paper stopper; 21. pre-suction surface; 22. bottom surface of pre-suction member; 23. suction surface; 24. first clearance groove; 25. second clearance groove. DETAILED DESCRIPTION

[0039] The following describes the relevant details and working principles of the implementation mode and embodiments of the present invention in conjunction with the accompanying drawings. Figure 3 In the figure, the X-axis is horizontal, the Y-axis is vertical, and the arrow direction is forward, and the Z-axis is vertical. The stacked paper towels are transported forward, one side of the first paper towel is the side edge 1 of the first paper towel, and the other side is the folded edge 4 of the first paper towel, and the folded edge of the first paper towel is in front.

[0040] The paper towel inner folding mechanism includes a folding plate 7, a suction piece 5 and a pressing piece 8; the suction piece 5 corresponds to the end close to the folding edge 4 of the first paper towel, that is, the suction piece 5 corresponds to the front half of the first paper towel 2. Because the paper towels are folded and stacked, half of the first paper towel is covered on the surface layer, and the other half is sandwiched between the second and third paper towels. The first paper towel described in the present invention usually refers to the half covered on the surface layer, and the part sandwiched between the second and third paper towels is the other half of the first paper towel. The front half and the back half of the first paper towel refer to the front half and the back half of the half of the first paper towel covered on the surface layer; the front half and the back half of the first paper towel are not absolute halves of the first paper towel, and also include left and right deviations and the situation where the front half is longer than the back half. When the extraction port on the outer packaging film of the paper towel is exactly in the middle, it is best to divide it into half. The bottom surface of the suction member 5 is a suction surface 23, and the suction member 5 is provided with a through hole 9 for the top pressure member 8 to pass through. The folding plate 7 is arranged at the end close to the side edge 1 of the first paper towel, and the folding plate 7 swings relative to the suction surface 23 of the suction member 5 and can support the top pressure member 8. The top pressure member 8 is arranged at the end close to the folding edge and rises and falls relative to the suction member 5. The top pressure member 8 and the suction member 5 are in the front, and the folding plate 7 is in the back. The suction member 5 absorbs the front half of the first paper towel 2, and the folding plate 7 folds the back half of the first paper towel 2 inward. The top pressure member 8 is columnar, and the top pressure end of the top pressure member 8 is preferably inverted cone shape; there are a plurality of the top pressure members 8, and they are arranged in a line horizontally, and the pressing surface of the inverted cone-shaped top pressure end with the paper towel is small, which not only improves the top pressure effect, but also reduces the trace of top pressure. When folding inward, the end of the first paper towel 2 close to the folding edge is sucked by the suction member 5, and the end of the first paper towel 2 that is not sucked naturally droops; then the folding plate 7 swings toward the suction surface 23 of the suction member 5, pushing the drooping first paper towel 2 to fold and fit toward the sucked end, so that the back half of the first paper towel is laid flat on the lower surface of the front half to form an upper and lower layer, and the folding plate drags the back half to make the inward folded back half smoother, and an indentation is formed at the folding position of the back half of the first paper towel and the front half. The pressing member 8 then passes through the through hole 9 to press the first paper towel 2 after being folded inwards. Because it is supported by the folding plate 7, the pressing force is stable, and the upper and lower layers of the first paper towel 2 after folding are pressed together under the pressing member 8. In this way, when the folding plate 7 is reset, the first paper towel after folding inwards will not be brought back, but will remain in the folded state, and the paper towel after folding inwards is not easy to turn back when entering the next process, which solves the problems of folding curling and turning back after folding in the background technology, and greatly improves the folding effect and success rate.

[0041] The inner folding operation needs to provide the folding plate 7 with a swinging space, see the attached Figure 2When the first paper towel 2 is sucked by the suction member 5, a space for the folding plate 7 to fold inwards should be provided between it and the second paper towel 3. This can be achieved by lifting the paper towel or the suction member 5, but it is easy for the other half of the first paper towel sandwiched between the second and third paper towels to shift, resulting in uneven paper towels. To solve this problem, the folding plate 7 and the top pressure member 8 are both arranged on the suction member 5, and the suction member 5 is swingably arranged above the paper towel. When folding inwards, the end of the suction member 5 provided with the folding plate 7 is lifted upwards; after the folding inwards is completed, the end of the suction member 5 provided with the folding plate 7 is swung downwards, and the suction surface of the suction member approaches or presses the paper towel below. By swinging the suction member, the side of the first paper towel is lifted upwards, providing folding space for the first paper towel to fold inwards, and at the same time, the other half of the first paper towel will not move. In order to ensure that the paper towels are accurately placed in place, the paper towel inward folding mechanism also includes a paper stopper that rises and falls on the frame. When the paper towels are transported to the inward folding station, the paper stopper 20 moves down, and the stacked paper towels are transported forward. The paper stopper 20 stops the paper towels, and the paper towels are in place; when the paper towels are folded inward, the paper stopper 20 moves up to make way, and the folded paper towels are sent to the next process.

[0042] The air permeability of the paper towel is good. If the adsorption force of the suction member 5 is too large, the two layers of paper towels will be adsorbed. If the adsorption force is too small, the paper towel will be detached or shifted when folded inward. The suction member 5 is connected to a pre-absorption member 6, and the pre-absorption member 6 is close to the side end of the first paper towel 2; after the paper towel is in place, the pre-absorption member 6 inhales air, and the side end of the first paper towel is adsorbed by the pre-absorption member; then the suction member 5 is lifted upward, the suction member inhales air, and the pre-absorption member stops inhaling air, and the end of the first paper towel close to the folding edge is adsorbed by the suction member, and the end of the first paper towel that is not adsorbed naturally droops. The first paper towel 2 is sucked by the pre-absorption member 6, and is adsorbed by the suction member 5 when folded inward, and different paper suction effects are achieved by the pre-absorption member 6 and the suction member 5. The pre-absorption surface 21 of the pre-absorption member 6 is inclined upward toward the end of the side of the first paper towel, and the pre-absorption surface 21 forms an angle with the suction surface 23 of the suction member 5. The suction force of the pre-absorption member 6 on the paper towel is smaller than that of the suction member 5, so as to avoid sucking two paper towels at the same time; without changing the negative pressure suction of the pre-absorption member 6 and the suction member 5, the inclined pre-absorption surface 21 is far away from the first paper towel 2, and the suction force of the pre-absorption member 6 on the paper towel is small, so that the suction force of the pre-absorption surface 21 can absorb the side end of the first paper towel, but it is not enough to absorb the second paper towel 3 under the first paper towel 2, so that only the first paper towel is absorbed each time; after the pre-absorption member 6 absorbs air, the first paper towel 2 is lifted up and separated from the second paper towel 3, and at this time, the suction member 5 can only absorb the first paper towel 2. The bottom surface of the pre-absorption member 6 is flush with the suction surface 23 of the suction member 5; when the pre-absorption member 6 absorbs material, the bottom surfaces of the pre-absorption member 6 and the suction member 5 are parallel to the horizontal plane; when the folding plate 7 is folded, the bottom surfaces of the pre-absorption member 6 and the suction member 5 form an angle with the horizontal plane. The bottom surface 22 of the pre-absorption member and the material absorption surface 23 of the material absorption member 5 block or press the paper towel when the pre-absorption member 6 absorbs the paper, so as to keep it flat and prevent other parts of the paper towel from being disturbed by the pre-absorption member 6.

[0043] The folding plate 7 is installed on the rotating shaft 10, and the rotating shaft 10 is rotatably arranged on the suction member 5, and the rotating shaft 10 is arranged between the pre-suction member 6 and the suction member 5. The pre-suction member 6 is provided with a plurality of first making way grooves 24 for making way for the folding plate 7, and the folding plate 7 is provided with a plurality of second making way grooves 25 for making way for the pre-suction member 6. The folding plate 7 is partially arranged alternately and misaligned with the pre-suction member 6. The folding plate 7 and the pre-suction member 6 are both at the side end of the first paper towel, and the alternating misaligned arrangement allows the two to fully cover the side end of the first paper towel 2 without interfering with each other. The rotating shaft 10 is connected to a driving component 1 that drives it to rotate forward and backward; the driving component 1 includes a gear 12, a rack 13 and a cylinder that drives the rack 13 to move longitudinally; the suction member 5 is installed with a longitudinally arranged guide rail 11, the rack 13 is slidably arranged on the guide rail 11, the gear 12 is installed on the rotating shaft 10, the rack 13 is meshed with the gear 12, the cylinder drives the rack 13 to move longitudinally, the rack 13 drives the gear 12 to rotate, the gear 12 rotates the rotating shaft 10, and the folding plate 7 swings when the rotating shaft 10 rotates. The suction member 5 is swingably arranged on the lifting seat 18. Before the paper towel is in place, the suction member 5 is in a high position to make way for the paper towel so that the paper towel can enter the inner folding station smoothly; after the paper towel is in place, the lifting seat moves down with the suction member, and the suction surface of the suction member approaches the paper towel or presses the paper towel; after the paper towel is folded inward, the lifting seat moves up and resets with the suction member, waiting for the next paper towel to be in place. The lifting seat 18 is slidably arranged on a linear guide rail 17, and the linear guide rail 17 is vertically arranged on a frame. The frame is provided with a driving component 2 for driving the lifting seat 18 to rise and fall; the driving component 2 includes a transmission belt 15, a transmission wheel 16 and a motor. The lifting seat 18 is connected to the transmission belt 15, and the transmission belt 15 is arranged on the transmission wheel 16, and the transmission wheel 16 is connected to the motor, and the motor is installed on the frame. The motor drives the transmission wheel 16 to rotate, and the transmission belt 15 is driven accordingly, so that the lifting seat 18 moves up or down, and the height of the suction member 5 can also be adjusted according to the thickness of the paper towel to meet the processing requirements of paper towels of different thicknesses. The suction member 5 is rotatably connected to the lifting seat 18 through the second rotating shaft 10, and a second cylinder 19 for driving the suction member 5 to swing is installed on the lifting seat 18, and the second cylinder 19 drives the suction member 5 to swing on the lifting seat 18.

[0044] The working principle of the preferred embodiment is further described below in conjunction with the accompanying drawings: In the initial state, the paper stopper 20 moves down, and the lifting seat 18 moves up with the suction member 5, completing the forward conveyance of the stacked paper towels, and the paper stopper 20 blocks the paper towels, and the paper towels are in place and the conveyance stops. The lifting seat moves down with the suction member, and the bottom surfaces of the suction member 5 and the pre-suction member 6 approach or press the paper towels in place, and the pre-suction surface 21 of the pre-suction member 6 sucks air to suck the side end of the first paper towel 2, and then the suction member 5 swings upward, and the first paper towel 2 is lifted up, and its side end is away from the second paper towel 3; then, the suction member 5 sucks air to suck the front half of the first paper towel 2, and the pre-suction member 6 stops sucking air, and the back half of the first paper towel 2 naturally droops, and the folding plate 7 swings counterclockwise and pushes the drooping back half of the first paper towel 2 to fold to the front half until the two are attached. The two layers of the first paper towel 2 are folded together to form an upper and lower layer that is folded in half and are dragged by the folding plate 7; the pressing member 8 moves downward, and the pressing end passes through the through hole 9 to press the upper and lower layers of paper towels, and is pressed against the folding plate 7, so that the two layers of the first paper towel 2 that are folded in half are pressed and connected together to achieve inward folding; then, the folding plate 7 swings in the opposite direction to reset, the pressing rod moves up to reset, and the suction member 5 swings downward counterclockwise to cover the first paper towel 2 that has completed inward folding on the second paper towel 3, and finally the suction member 5 stops sucking, and the lifting seat moves up with the suction member to reset, and the paper stopper 20 moves up to make way, and the paper towel that has completed inward folding enters the next process.

Claims

1. A tissue folding mechanism, characterized in that: It includes a folding plate, a material suction piece and a top pressing piece; The suction piece corresponds to the end close to the folded edge of the first paper towel, the bottom surface of the suction piece is the suction surface, and the suction piece is provided with a through hole for the top pressure piece to pass through; The folding plate is arranged at the end close to the side edge of the first paper towel, and the folding plate swings relative to the suction surface of the suction member and can support the top pressure member; The pressing member is arranged at the end close to the folding edge and moves up and down relative to the material suction member; When folding inward, the end of the first paper towel close to the folding edge is sucked by the suction piece, and the end of the first paper towel that is not sucked naturally droops; then the folding plate swings toward the suction surface of the suction piece, pushing the drooping first paper towel to fold and fit toward the sucked end; then the pressing piece passes through the through hole to press the first paper towel after folding inward, and the surface part of the first paper towel and the inner folded part are pressed together.

2. The paper towel inner folding mechanism according to claim 1, characterized in that: The folding plate and the top pressure piece are both arranged on the material suction piece, and the material suction piece is swingably arranged above the paper towel; When folding inward, the end of the suction piece provided with the folding plate is lifted upward; after the folding inward is completed, the suction piece is swung downward, and the suction surface of the suction piece approaches or presses the paper towel below.

3. The paper towel inner folding mechanism according to claim 2, characterized in that: The material suction member is connected to a pre-suction member, and the pre-suction member is close to the side edge of the first paper towel; After the paper towels are in place, the pre-suction piece sucks air, and the side end of the first paper towel is sucked by the pre-suction piece; then the suction piece is lifted upward, the suction piece sucks air, and the pre-suction piece stops sucking air, and the end of the first paper towel close to the folded edge is sucked by the suction piece, and the end of the first paper towel that is not sucked naturally droops.

4. The paper towel inner folding mechanism according to claim 3, characterized in that: The pre-absorption surface of the pre-absorption member is inclined upward toward the end of the side edge of the first paper towel, and the pre-absorption surface forms an angle with the material absorption surface of the material absorption member.

5. The paper towel inner folding mechanism according to claim 4, characterized in that: The bottom surface of the pre-absorption member is flush with the material absorption surface of the material absorption member; When the pre-absorbent member absorbs materials, the bottom surfaces of the pre-absorbent member and the material absorbing member are parallel to the horizontal plane; when the folding plate is folded, the bottom surfaces of the pre-absorbent member and the material absorbing member form an angle with the horizontal plane.

6. The paper towel inner folding mechanism according to claim 3, characterized in that: The pre-absorption member is provided with a plurality of first making way grooves for making way for the folding plate, the folding plate is provided with a plurality of second making way grooves for making way for the pre-absorption member, and the folding plate part and the pre-absorption member are alternately staggered.

7. The paper towel inner folding mechanism according to claim 1, characterized in that: The paper towel inner folding mechanism also includes a paper stopper that rises and falls on the frame; The paper towel is transported to the inward folding station, and the paper stopper moves down; when the paper towel is folded inward, the paper stopper moves up to make way.

8. The paper towel inner folding mechanism according to any one of claims 1 to 7, characterized in that: The folding plate is installed on a rotating shaft, and the rotating shaft is rotatably arranged on the material suction member, and the rotating shaft is arranged between the pre-suction member and the material suction member; The rotating shaft is connected to a driving component that drives it to rotate forward and reversely; the driving component includes a gear, a rack and a cylinder that drives the rack to move longitudinally; a longitudinally arranged guide rail is installed on the suction member, the rack is slidably arranged on the guide rail, the gear is installed on the rotating shaft, and the rack is meshed with the gear.

9. The paper towel inner folding mechanism according to any one of claims 1 to 7, characterized in that: The material suction member is swingably arranged on the lifting seat. Before the paper towel is in place, the suction piece is in a high position; after the paper towel is in place, the lifting seat moves the suction piece downward, and the suction surface of the suction piece approaches the paper towel or presses the paper towel; after the paper towel is folded inward, the lifting seat moves the suction piece upward and resets.

10. The paper towel inner folding mechanism according to claim 9, characterized in that: The lifting seat is slidably arranged on a linear guide rail, the linear guide rail is vertically arranged on a frame, and a driving component 2 for driving the lifting seat to rise and fall is arranged on the frame; The second driving component includes a transmission belt, a transmission wheel and a motor, the lifting seat is connected to the transmission belt, the transmission belt is arranged on the transmission wheel, the transmission wheel is connected to the motor, and the motor is installed on the frame; The material suction member is rotatably connected to the lifting seat via a second rotating shaft, and a second cylinder driving the material suction member to swing is installed on the lifting seat; The pressing end of the pressing member is in an inverted cone shape; A plurality of the pressing members are provided and arranged in a line in the horizontal direction.

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