Bottom-pull tissue folding machine

Abstract

The utility model discloses a bottom-drawn paper towel folder, including a bracket, on which a paper feed roller assembly for feeding paper, an upper knife roller for pressing paper towels, a paper folding roller assembly for folding paper towels, a fork assembly for pulling paper towels off the paper folding roller, a paper separation module for separating paper towels, and a conveying mechanism for conveying paper towels are sequentially installed from top to bottom. The bottom-drawn paper towel folder designed by the utility model realizes automatic and accurate paper towel folding through a series of ingenious designs. First, the paper feed roller assembly is used to convey the paper towels to the center of the frame, and then the two paper folding roller assemblies are used to complete the preliminary folding. The sides of the two paper folding rollers are provided with V-grooves arranged at intervals, which cooperate with the lower blade to enable the paper towels to be smoothly pressed into the V-grooves and complete the preliminary folding.

Description

Technical Field

[0001] The utility model relates to the technical field of paper processing, in particular to a bottom-drawing paper towel folding machine. Background Art

[0002] With the development of society and the improvement of people's quality of life, paper towels have become an indispensable daily necessity in our daily lives. However, the traditional way of folding paper towels often requires manual operation, which is time-consuming and labor-intensive, and there is also a lot of waste in the process of using paper towels. This not only leads to a huge waste of resources, but also puts a lot of pressure on the environment.

[0003] In order to solve these problems, Chinese researchers have been looking for more efficient and accurate paper towel folding methods. At present, some automatic paper towel folding machines on the market can achieve partial automation, but still require manual intervention, such as adjusting the folding angle and controlling the position of the paper towel. The common problem of these machines is that due to the lack of intelligent design, their accuracy and efficiency in practical applications still need to be improved.

[0004] In general, the existing paper towel folding technology still has many shortcomings, and we need to optimize and improve it based on new technologies. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a bottom-drawn paper towel folder to solve the above problem.

[0006] To achieve the above-mentioned purpose, the utility model discloses a bottom-drawing paper towel folder, comprising a bracket, on which a paper feeding roller assembly for feeding paper, an upper knife roller for pressing paper towels, a paper folding roller assembly for folding paper towels, a fork assembly for pulling paper towels off the paper folding roller, a paper separation module for separating paper towels, and a conveying mechanism for conveying paper towels are sequentially installed from top to bottom, wherein the upper knife roller is fixed with an upper knife for pressing paper towels, the number of the paper folding rollers is two, and a negative pressure chamber is provided inside the paper folding rollers, the two paper folding rollers are symmetrically installed on both sides of the bracket, the paper towel is fed into the frame through the paper feeding roller assembly and passes between the two paper folding rollers after being compacted by the upper knife roller, the sides of the two paper folding rollers are provided with spaced V-grooves and lower blades, the V-grooves are connected to the negative pressure chamber, and the fork assembly comprises a fork for pulling paper towels off the paper folding roller and a swing mechanism installed on the frame for driving the fork to swing back and forth.

[0007] Beneficial effects: The bottom-pulling paper towel folder designed by the utility model realizes automatic and accurate paper towel folding through a series of ingenious designs. First, the paper feeding roller assembly is used to transport the paper towel to the center of the frame, and then the two paper folding roller assemblies are used to complete the initial folding. The sides of the two paper folding rollers are provided with V-grooves set at intervals, which cooperate with the lower blade so that the paper towel can be smoothly pressed into the V-groove and complete the initial folding. Then, through the cooperation of the fork assembly and the swing mechanism, the paper towel is pushed off the paper folding roller and adsorbed onto the paper folding roller on the other side to achieve symmetrical folding on both sides. Finally, with the help of the limiting mechanism of the knife shaft swing seat and the action of the upper blade and the lower blade, a crease is generated on the surface of the paper towel, which is convenient for the subsequent pressing of the paper towel into the V-groove to achieve precise folding. The whole process is simple and efficient, which effectively improves the utilization rate of paper towels. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Figure 2 It is a schematic diagram of the local structure of the utility model.

[0011] Figure 3 This is a schematic diagram of the locking structure of the upper knife roller shaft of the utility model.

[0012] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model.

[0013] Figure 5 This is a schematic diagram of the structure of the paper folding roller of the utility model. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-5 The specific implementation modes of the present utility model are further described in detail.

[0015] Depend on Figure 1-5The utility model bottom-drawing paper towel folder comprises a bracket 10, on which are sequentially installed from top to bottom a paper feeding roller assembly 20 for feeding paper, an upper knife roller 30 for pressing paper towels, a paper folding roller assembly 40 for folding paper towels, a fork assembly 50 for pulling paper towels off the paper folding roller assembly 40, a paper separation module 60 for separating paper towels, and a conveying mechanism 70 for conveying paper towels, wherein the upper knife roller 30 is fixed with an upper knife 301 for pressing paper towels, and the paper folding roller assembly 40 is fixed with an upper knife 301 for pressing paper towels. The machine frame 10 includes two folding rollers 41 rotatably mounted with the frame 10, and the folding rollers 41 are provided with a negative pressure chamber 42 inside. The negative pressure chamber 42 is externally connected to a negative pressure pump for generating negative pressure. The two folding rollers 41 are symmetrically mounted on both sides of the bracket 10. The paper towel is fed into the frame 10 through the paper feeding roller assembly 20 and passes between the two folding rollers 41 after being compacted by the upper knife roller 30. The sides of the two folding rollers 41 are provided with V-grooves 43 and lower blades 44 arranged at intervals. The V-grooves 43 and the lower blades 44 cooperate with each other. When Figure 1-2 When the lower blade 44 of the left folding roller 41 rotates to the rightmost end, the V-groove 43 of the right folding roller 41 just rotates to the leftmost end accordingly, so that the lower blade 44 is just inserted into the V-groove 43, thereby pressing the part of the paper towel into the V-groove 43 of the folding roller 41. The V-groove 43 is connected to the negative pressure chamber 42, so that the paper towel is attached to the surface of the folding roller 41 under the action of negative pressure. The fork assembly 50 includes a fork 51 for pulling the paper towel off the folding roller 40 and a swinging member installed on the frame 10 for driving the fork 51 to swing back and forth The mechanism 52, the specific function of the swing mechanism 52 is to drive the shaft of the fork 51 to rotate in the forward and reverse directions. There are many means in the prior art to drive the shaft to rotate forward and reversely, which will not be repeated here. When the absorbed paper towel reaches the position of the fork 51, the fork 51 is used to pull the paper towel off the surface of the paper folding roller 41. When the paper towel falls off, because the two paper folding rollers 41 continue to rotate inward, the positions of the lower blade 44 and the V-groove 43 are exchanged when the second time is released, so that the paper towel begins to be absorbed by the paper folding roller 43 on the other side (that is, Figure 2 In the state shown in the figure), and then it is pulled down by the fork on the other side, so that the automatic folding of the paper towel is realized. In addition, when the paper folding roller 41 rotates, the lower blade 44 and the upper knife 301 are periodically contacted. When in contact, a crease will be generated on the surface of the paper towel under the action of the upper knife 301 and the lower blade 44. In this way, it is convenient for the lower blade 44 to press the paper towel from the crease to the V-groove 43, resulting in a good folding effect.

[0016] In some embodiments, the frame 10 is movably provided with a knife shaft swing seat 31 for adjusting the installation position of the upper knife roller 30. The upper knife roller 30 is rotatably connected to the knife shaft swing seat 31. The frame 10 is provided with a limiting mechanism 32 for limiting the knife shaft swing seat 31.

[0017] In some embodiments, the limiting mechanism 32 includes a cylinder 321, the upper end of the cylinder 321 is rotatably connected to the frame 10, and a compression spring 322 is connected between the upper end of the cylinder 321 and the frame 10, the lower end of the cylinder 321 is rotatably connected to the knife shaft swing seat 31, and the other end of the knife shaft swing seat 31 is rotatably provided with a movable shaft 323, the frame 10 is penetrated by a movable opening 11, the movable shaft 323 is movably inserted in the movable opening 11, and the frame 10 is provided with a locking structure 324 for locking the rotating shaft of the upper knife roller 30, such as Figure 3 As shown, the locking structure 324 is a bolt structure that presses against the side of the shaft of the upper knife roller 30. When adjusting the knife shaft swing seat 31, the cylinder 321 is extended and retracted to drive one end of the knife shaft swing seat 31 to move, and the other end of the knife shaft swing seat 31 slides in the movable opening 11. The other end of the knife shaft swing seat 31 is fixed by the locking structure 324 to achieve the limitation of the knife shaft swing seat 31. Through the elastic force of the compression spring 322, the upper knife 301 is pressed on the surface of the paper towel without being pressed too tightly.

[0018] In some embodiments, the paper feeding roller assembly 20 includes at least two groups of paper feeding rollers 21 , each group of paper feeding rollers 21 has two paper feeding rollers, and the two groups of paper feeding rollers 21 are symmetrically installed on both sides of the frame 10 .

[0019] The paper feeding roller assembly 20 further includes a machine head paper guide roller 22 . There are two machine head paper guide rollers 22 , and the two machine head paper guide rollers 22 are symmetrically mounted on both sides of the frame 10 .

[0020] In some embodiments, the paper feeding roller assembly 20 further includes two arc rollers 23, which are rotatably mounted on the top of the frame 10. The function of the arc rollers 23 is to straighten the paper during the paper feeding process.

[0021] In some embodiments, a conveying mechanism 70 is installed at the lower end of the frame 10, and the conveying mechanism 70 can be a conventional conveyor belt structure.

[0022] Please refer to Figure 5 In some embodiments, a negative pressure box 45 is installed on the end surface of the paper folding roller 41, and the negative pressure box 45 is fixedly connected to the frame 10. The rotating shaft of the paper folding roller 41 passes through the negative pressure box 45 and can rotate in the negative pressure box 45. The side of the negative pressure box 45 close to the paper folding roller 41 is connected to the negative pressure chamber 42, and a connecting pipe 46 is provided on the side of the negative pressure box 45 for generating negative pressure by an external negative pressure pump.

[0023] Please refer to Figure 5 In some embodiments, a groove 47 is provided on the side of the paper folding roller 41 , and the groove 47 corresponds to the position of the fork 51 , so that the fork 51 can move into the groove 47 to remove the paper towel on the surface of the paper folding roller 41 .

[0024] In some embodiments, the paper separation module 60 includes a front insert 61, a cloth receiving rack 62 and a distribution rack 63, wherein the front insert 61, the cloth receiving rack 62 and the distribution rack 63 are all vertically slidably connected to the frame 10, and the front insert 61, the cloth receiving rack 62 and the distribution rack 63 are all provided with a horizontal moving mechanism 64, through which the front insert 61, the cloth receiving rack 62 and the distribution rack 63 can be moved horizontally in a horizontal position perpendicular to the conveying direction of the conveying mechanism 70. At the beginning, the front insert 61 is at the top, and the folded paper towels first fall on the front insert 61. As the thickness of the paper towels increases, , the position of the front insert 61 gradually decreases, then the cloth receiving rack 62 moves upward and is horizontally inserted under the paper towel, taking over the front insert 61, and then the front insert 61 is pulled out and returns to the original height to stand by, when the cloth receiving rack 62 decreases to the specified position, the front insert 61 is inserted into the upper end of the paper towel for paper separation, and the distribution rack 63 then moves upward and is horizontally inserted above the separated paper towel, and then it decreases together with the cloth receiving rack 62, placing the separated paper towel on the conveying mechanism 70 for conveying, wherein the vertical and horizontal movements of the front insert 61, the cloth receiving rack 62 and the distribution rack 63 are all basic means, which will not be elaborated here.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Bottom-drawn tissue folder, characterized in that: The invention comprises a bracket, on which a paper feeding roller assembly for feeding paper, an upper knife roller for pressing paper towels, a paper folding roller assembly for folding paper towels, a fork assembly for pushing paper towels off the paper folding roller, a paper separation module for separating paper towels and a conveying mechanism for conveying paper towels are sequentially installed from top to bottom, wherein the upper knife roller is fixed with an upper knife for pressing paper towels, the paper folding roller assembly comprises a paper folding roller rotatably mounted with a frame, the number of the paper folding rollers is two, and a negative pressure chamber is arranged inside the paper folding roller, the two paper folding rollers are symmetrically mounted on both sides of the bracket, the paper towel is fed into the frame through the paper feeding roller assembly and passes between the two paper folding rollers after being compacted by the upper knife roller, the sides of the two paper folding rollers are provided with spaced V-grooves and lower blades, the V-grooves are connected with the negative pressure chamber, the fork assembly comprises a fork for pushing the paper towels off the paper folding roller and a swing mechanism installed on the frame for driving the fork to swing back and forth.

2. The bottom-drawn tissue folder according to claim 1, characterized in that: The frame is movably provided with a knife shaft swing seat for adjusting the installation position of the upper knife roller, the upper knife roller is rotatably connected to the knife shaft swing seat, and the frame is provided with a limiting mechanism for limiting the knife shaft swing seat.

3. The bottom-pull paper towel folder according to claim 2, characterized in that: The limiting mechanism includes a cylinder, the upper end of the cylinder is rotatably connected to the frame, and a compression spring is connected between the upper end of the cylinder and the frame, the lower end of the cylinder is rotatably connected to the knife shaft swing seat, the other end of the knife shaft swing seat is rotatably provided with a movable shaft, the frame is penetrated by a movable opening, the movable shaft is movably inserted in the movable opening, and the frame is provided with a locking structure for locking the upper knife roller rotating shaft.

4. The bottom-pull paper towel folder according to claim 1, characterized in that: The paper feeding roller assembly comprises at least two groups of paper feeding rollers, each group of paper feeding rollers has two paper feeding rollers, and the two groups of paper feeding rollers are symmetrically installed on both sides of the frame.

5. The bottom-drawn tissue folder according to claim 4, characterized in that: The paper feeding roller assembly also includes a machine head paper guide roller, the number of the machine head paper guide rollers is two, and the two machine head paper guide rollers are symmetrically installed on both sides of the frame.

6. The bottom-pull paper towel folder according to claim 1, characterized in that: The paper feeding roller assembly also includes two arc-shaped rollers, which are rotatably mounted on the top of the frame.

7. The bottom-pull paper towel folder according to claim 1, characterized in that: A conveying mechanism is installed at the lower end of the frame.

8. The bottom-pull paper towel folder according to claim 7, characterized in that: The paper separation module includes a front insert, a cloth receiving frame and a distribution frame, wherein the front insert, the cloth receiving frame and the distribution frame are all vertically slidably connected to the frame, and the front insert, the cloth receiving frame and the distribution frame are all provided with a horizontal moving mechanism, through which the front insert, the cloth receiving frame and the distribution frame can be laterally moved in a horizontal position perpendicular to the conveying direction of the conveying mechanism.

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