A paper towel folding processing device and method

Abstract

The present invention relates to the field of paper towel folding machines, and discloses a paper towel folding processing device and method thereof. The technical scheme thereof comprises a frame and a paper cutting and folding unit installed on the frame, a first manipulator unit, a symmetrically arranged second manipulator unit, a third manipulator unit, and a paper receiving unit; the symmetrically arranged second manipulator unit is located below the paper cutting and folding unit; the paper receiving unit is located below the second manipulator unit; the first manipulator unit and the third manipulator unit are located between the second manipulator unit and the paper feeding unit; the invention aims to provide a device and method capable of effectively improving the efficiency of paper separation and transportation, and belongs to the field of folding machines.

Description

Technical Field

[0001] The invention relates to the field of folding machines, and in particular to a paper towel folding device and a method thereof. Background Art

[0002] At present, in a paper towel folding machine, after the folding mechanism folds the paper towel, the paper towel is placed on the receiving paper board. When the number of paper towels reaches the preset number, the mechanical fingers quantitatively separate the folded paper towels, thereby forming a stack of paper towels of the same number. However, the existing equipment uses a receiving paper board, which needs to first convey the paper towels on the receiving paper board to the conveying mechanism, and then rise to receive the paper towels on the paper separation mechanism. Since only the paper separation mechanism and the receiving paper board have the function of receiving paper towels, the efficiency is relatively slow and cannot meet the growing demand for high efficiency. Secondly, the paper separation mechanism only has the function of quantitatively separating the number of sheets of each stack of paper towels. Since the folded length is basically the same as the width of the paper box, it is difficult for the user to extract the first sheet of paper, which affects the user experience.

[0003] CN202220781135 discloses a stacking mechanism of a paper-drawing folding machine, including a receiving component, a transition component and a separation component, wherein the receiving component includes a receiving part and a material stopper, the receiving part rises and falls in the paper stacking area, and the material stopper can enter and exit the paper stacking area; the transition component includes a supporting part that enters and exits the paper stacking area longitudinally; the separation component includes a separating part that enters and exits the paper stacking area longitudinally, and the separating part is arranged opposite to the supporting part. When the materials on the receiving part are stacked to a set number, the supporting part enters the paper stacking area, the subsequent materials are stacked on the supporting part, the receiving part moves downward, the separating part and the paper stopper enter the paper stacking area, the paper stopper blocks the top of the first paper on the receiving part, and the separating part pushes the lower half of the bottom paper of the supporting part to separate it from the materials on the receiving part, and covers the bottom of the supporting part, the paper stopper acts as a paper stopper, separates the bottom paper on the supporting part from the materials on the receiving part, and ensures the stacking quality. However, since there are only supporting members and receiving members to support the paper, there is a situation where the receiving member is waiting for paper to be fed below while the paper on the supporting member has reached a preset number, which makes it difficult to achieve high-speed production of paper.

[0004] The technical problem to be solved by the present invention is: how to improve the efficiency of the paper towel folding processing device and fold the first paper towel after the paper cutting and folding unit is folded, so as to facilitate the user to draw the paper towel from the paper box and improve the user experience. Summary of the invention

[0005] The main purpose of the present invention is to provide a paper towel folding processing device, which enables a user to easily extract paper towels from a paper box by using a second manipulator unit to fold the front end of a stack of paper towels. Secondly, by providing a first manipulator unit, the paper towels can be received in time while the speed of the paper cutting and folding unit is increased, thereby increasing the production speed of the paper towels.

[0006] At the same time, another object of the present invention is to provide a method for folding paper towels.

[0007] To achieve the above purpose, the first technical solution adopted in this application is:

[0008] A paper towel folding processing device comprises a frame and a paper cutting and folding unit installed on the frame, a first manipulator unit, a symmetrically arranged second manipulator unit, a third manipulator unit, and a paper receiving unit; the symmetrically arranged second manipulator unit is located below the paper cutting and folding unit; the paper receiving unit is located below the second manipulator unit; the first manipulator unit and the third manipulator unit are located between the second manipulator unit and the paper feeding unit.

[0009] Preferably, the second manipulator unit is provided with an air blowing pipe.

[0010] Preferably, it also includes a paper feeding unit; the paper feeding unit is used to push the paper towel on the paper receiving unit to the next process.

[0011] Preferably, the paper cutting and folding unit comprises a punching module, a cutting module, a lower knife roller, and a folding module; the punching module, the lower knife roller, and the folding module are arranged on the frame in sequence; the cutting module is located on the side of the lower knife roller close to the paper towel conveying.

[0012] The second technical solution of the present invention is to provide a paper towel folding method, which adopts the paper towel folding device of the first technical solution, and specifically comprises the following steps:

[0013] Step 1: The paper towel is transported to the paper cutting and folding unit for punching, folding, and cutting, and then transported downward to the second robot unit;

[0014] Step 2: When the first paper towel reaches the second manipulator unit at the preset position, the symmetrically arranged second manipulator units approach each other, clamp the paper towel and move downward with the paper towel;

[0015] Step 3: The first robot unit moves to the bottom of the paper towel to receive the paper towel, the first paper towel is folded at a preset position and moves downward with the paper towel, and the second robot unit moves back to the initial position;

[0016] Step 4: The paper receiving unit moves upward to receive the paper towels on the first robot unit, and moves downward with the paper towels; when the number of paper towels on the paper receiving unit reaches a preset number, the third robot unit presses the upper surface of the paper towels, and when it reaches the next process position, the third robot unit moves back to the initial position;

[0017] The preset position is a position of 1 / 8 to 1 / 4 of the length of the front end of the first paper towel.

[0018] Preferably, step 2 is specifically as follows: when the 1 / 4 length position of the front end of the first paper towel reaches the second manipulator unit, the two second manipulator units move towards each other to clamp the paper towel, and the air blowing tube on the second manipulator unit located above the first manipulator unit blows air towards the paper towel to tilt the end of the paper towel.

[0019] Preferably, the method further comprises step 5: when the paper receiving unit reaches the position of the next process, the paper feeding unit pushes the paper towel on the paper receiving unit to the next process.

[0020] Preferably, step 1 is specifically as follows: after the paper towel is conveyed to the lower knife roller, the punching module punches gap punching lines on the paper towel according to the length of a piece of paper towel, and the lower knife roller conveys the paper towel with the gap punching lines to the folding module for folding; when the number of paper towels reaches a preset number, the cutting module approaches the lower knife roller to cut the paper towel.

[0021] Preferably, the paper feeding speed of the paper cutting and folding unit is 100-120 m / min.

[0022] Preferably, step 3 is specifically as follows: the first robot unit moves to the bottom of the paper towel, moves upward to press the end of the paper towel, so that the paper towel forms a 1 / 4 length fold, and moves downward with the paper towel, and the second robot unit moves back to the initial position.

[0023] Compared with the prior art, this solution has the following beneficial effects:

[0024] 1. The paper towel folding processing device provided by the present invention utilizes two second manipulator units to clamp the 1 / 4 length position of the front end of the paper towel, and then compresses it through the first manipulator unit, so that the 1 / 4 length position of the front end of the paper towel is folded. After the paper towels are packaged, the front end of the first paper towel is located at the opening line position, so that the user can easily pull out the paper towel to improve the user experience.

[0025] 2. The paper towel folding processing device provided by the present invention is additionally provided with a first robot unit. When the speed of the paper cutting and folding unit is increased, the first robot unit, the second robot unit and the paper receiving unit can all receive paper towels, thereby increasing the number of paper towels received by the equipment and being able to receive paper towels in a timely manner, thereby increasing the production speed of paper towels.

[0026] 3. The technical solution provided by the present invention forms a fold at the 1 / 4 length of the front end of the first paper towel in a stack of paper towels through the coordinated action of the first manipulator unit and the second manipulator unit. After packaging, the user only needs to easily pull the first paper towel to pull it out after tearing off the tear strip of the packaging, thereby avoiding the situation where the user may pull out multiple paper towels in succession due to the lack of 1 / 4 length fold. Secondly, the 1 / 4 length fold is generated by automation instead of manual work, which improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a paper towel folding processing device of Example 1;

[0028] Figure 2 is a cross-sectional view of the tissue folding device of Example 1;

[0029] Figure 3 This is a schematic diagram of a paper towel folded 1 / 4 in Example 2.

[0030] Wherein: frame 1; paper cutting and folding unit 2; first manipulator unit 3; second manipulator unit 4; third manipulator unit 5; paper receiving unit 6; paper feeding unit 7; punching module 21; cutting module 22; lower knife roller 23; folding module 24; auxiliary roller 11; air blowing pipe 41. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the present application implemented as described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Example 1

[0033] refer to Figure 1-2 A paper towel folding processing device comprises a frame 1 and a paper cutting and folding unit 2, a first manipulator unit 3, a symmetrically arranged second manipulator unit 4, a third manipulator unit 5, and a paper receiving unit 6 installed on the frame 1; the symmetrically arranged second manipulator unit 4 is located below the paper cutting and folding unit 2; the paper receiving unit 6 is located below the second manipulator unit 4; the first manipulator unit 3 and the third manipulator unit 5 are located between the second manipulator unit 4 and the paper feeding unit 7;

[0034] Preferably, the second manipulator unit 4 is provided with an air blowing pipe 41;

[0035] Preferably, it further comprises a paper feeding unit 7; the paper feeding unit 7 is used to push the paper towel on the paper receiving unit 6 to the next process.

[0036] Preferably, the paper cutting and folding unit 2 comprises a punching module 21, a cutting module 22, a lower knife roller 23, and a folding module 24; the punching module 21, the lower knife roller 23, and the folding module 24 are sequentially arranged on the frame 1; the cutting module 22 is located on the side of the lower knife roller 23 close to the paper towel conveying;

[0037] Preferably, the frame 1 is provided with a rotatable auxiliary roller 11; the auxiliary roller 11 is located on the side of the lower knife roller away from the cutting module 22; the paper towel passes through the auxiliary roller 11 and the gap between the auxiliary roller 11 and the lower knife roller in turn and is adsorbed on the lower knife roller.

[0038] In this embodiment, the specific working process of the paper towel folding processing device is as follows: the external paper feeding mechanism conveys the paper towel around the auxiliary roller 11 to the lower knife roller 23; the lower knife roller 23 rotates to drive the paper towel to move, and when the bottom knife on the lower knife roller 23 contacts the punching module 21, the position of the paper towel on the bottom knife is punched with gap punching lines, thereby punching gap punching lines at intervals on the paper towel, and the lower knife roller 23 conveys the paper towel with the gap punching lines to the folding module 24 for folding. After the paper towel is folded, it is conveyed downward. When the front end of the paper towel enters the position of the second manipulator unit 4, the two symmetrically arranged manipulator units approach each other and clamp the front end of the paper towel, and move downward with the paper towel. At the same time, the air blowing pipe 41 on the second manipulator unit 4 located above the first manipulator unit 3 blows air to the paper towel, causing the end of the paper towel to tilt. The first manipulator unit 3 moves to the bottom of the paper towel and slightly presses upward, so that the front end of the paper towel is folded, which is convenient for the user to pull out the paper towel. The paper receiving unit 6 receives the paper towel from the first manipulator unit 3. When the lower knife roller 23 conveys the paper towel to the preset number of sheets, the cutting module 22 approaches the lower knife roller 23, and the bottom knife on the lower knife roller 23 contacts the cutting module 22, thereby cutting the paper towel. After the number of paper towels on the paper receiving unit 6 reaches the preset number of sheets, the third manipulator unit 5 moves downward, presses the upper surface of the paper towel, and moves downward with the paper receiving unit 6 to the side of the external conveyor belt. The paper feeding unit 7 pushes the paper receiving unit 6 into the external conveyor belt.

[0039] It should be noted that the structures of the first manipulator unit 3, the second manipulator unit 4, and the third manipulator unit 5 are basically the same, and other manipulators that can move on a plane can be used, such as the third manipulator device in CN114933200A, but are not limited to this structure. Compared with the first manipulator unit 3 and the third manipulator unit 5, the second manipulator is additionally provided with a blowing pipe.

[0040] The structure of the folding module 24 is substantially the same as the folding structure in CN114933200A.

[0041] The punching module 21 is a blade that can punch intermittent perforated lines on the paper towel and a power source that drives the blade to approach or move away from the lower knife roller 23 .

[0042] The cutting module 22 is a blade capable of cutting the paper towel and a power source for driving the blade to move closer to or away from the lower knife roller 23 .

[0043] Example 2

[0044] refer to Figure 3 , a paper towel folding method, comprising the following steps:

[0045] Step 1: The paper towel is transported to the paper cutting and folding unit 2 for punching, folding, and cutting, and then transported downward to the second manipulator unit 4;

[0046] In this embodiment, step 1 is specifically as follows: the paper towel is conveyed from the external paper feeding mechanism around the auxiliary roller 11 to the lower knife roller 23. After the paper towel is conveyed to the lower knife roller 23, the punching module 21 punches gap punching lines on the paper towel according to the length of a piece of paper towel, and the lower knife roller 23 conveys the paper towel with the gap punching lines to the folding module 24 for folding; when the number of paper towels reaches 100 sheets, the cutting module 22 approaches the lower knife roller 23 and cuts the paper towels to form a stack of paper towels. The length of a piece of paper towel is 200 mm. The preset number of sheets and the length of a piece of paper towel can be set according to demand, and other preset numbers of sheets are not excluded.

[0047] There is a piece of tissue paper between the two gap punch lines.

[0048] Step 2: When the 1 / 4 length position of the front end of the first paper towel reaches the second manipulator unit 4, the symmetrically arranged second manipulator units 4 approach each other, clamp the paper towel and move downward with the paper towel;

[0049] The step 2 is specifically as follows: when the 1 / 4 length position of the front end of the first paper towel in a stack of paper towels reaches the horizontal position of the second manipulator unit 4, the two second manipulator units 4 approach each other to clamp the paper towels, and the two second manipulator units 4 move downward with the paper towels, so that the subsequent paper towels can gradually fall on the second manipulator unit 4, avoiding the subsequent paper towels from being blocked under the folding unit, and the air blowing pipe 41 on the second manipulator unit 4 located above the first manipulator unit 3 blows air to the paper towels, so that the 1 / 4 length position of the front end of the paper towels is tilted toward one side, so that the subsequent paper towels can form a 1 / 4 fold when placed on the first manipulator unit 3. Through the action of the air blowing pipe 41, it is avoided that the front end of the paper towel cannot form a 1 / 4 fold or forms multiple folds when placed on the first manipulator unit 3 due to problems with airflow or paper towel hardness, which affects the product appearance and user experience.

[0050] Step 3: The first robot unit 3 moves to the bottom of the paper towel to receive the paper towel, the paper towel is folded into 1 / 4 of its length, and moves downward with the paper towel, while the second robot unit 4 moves back to the initial position;

[0051] Preferably, step 3 is specifically as follows: after the second manipulator unit 4 clamps the paper towel and blows air to it, the first manipulator unit 3 moves to the bottom of the paper towel, moves upward to press the end of the paper towel, and then moves downward with the paper towel, so that the upward pressure of the first manipulator unit 3 makes the 1 / 4 length fold of the paper towel more obvious and stable, avoiding the 1 / 4 length fold bouncing up due to the rebound force of the paper towel in subsequent packaging, affecting subsequent packaging. After the first manipulator unit 3 takes over the paper towel, the second manipulator unit 4 moves back to the initial position and waits for the next clamping.

[0052] More specifically, through the coordinated action of the first manipulator unit 3 and the second manipulator unit 4, the 1 / 4 length of the front end of the first paper towel in a stack of paper towels is folded. After packaging, the user only needs to easily pull the first paper towel to pull it out after tearing off the tear strip of the packaging, thereby avoiding the situation where the user may continuously pull out multiple paper towels due to the lack of 1 / 4 length folding. Secondly, the 1 / 4 length folding is generated by automation instead of manual work, which improves production efficiency.

[0053] By first using the first robot unit 3 to pick up paper instead of directly using the paper picking unit 6 to pick up paper, when the production speed is fast, when the paper picking unit 6 is transporting a stack of paper towels, the first robot unit 3 can temporarily replace the paper picking unit 6 to pick up paper, thereby avoiding the situation where the paper picking unit 6 does not have time to pick up paper due to the fast production speed.

[0054] Step 4: The paper receiving unit 6 moves upward to receive the paper towels on the first robot unit 3, and moves downward with the paper towels; when the paper towels on the paper receiving unit 6 reach a preset number, the third robot unit 5 presses the upper surface of the paper towels, and when reaching the next process position, the third robot unit 5 moves back to the initial position.

[0055] In this embodiment, the paper receiving unit 6 moves upward to receive the paper towels on the first manipulator unit 3. At this time, the first manipulator unit 3 can continue to receive the paper towels on the second manipulator unit 4. When the paper towels on the paper receiving unit 6 reach the preset number, the third manipulator unit 5 moves to the top of the paper towels and presses the upper surface of the paper towels, and moves downward with the paper receiving unit 6 to prevent the top of a stack of paper towels from floating up during the conveying process due to the airflow or the rebound force of the paper towels, affecting subsequent processing. When the paper receiving unit 6 conveys the paper towels to the conveyor belt of the peripheral device, the third manipulator moves to the initial position and waits for the next pressing.

[0056] Step 5: When the paper receiving unit 6 reaches the position of the next process, the paper feeding unit 7 pushes the paper towel on the paper receiving unit 6 to the next process.

[0057] The next process position is next to the external conveyor belt. After the paper receiving unit 6 conveys the paper towel to the external conveyor belt, the paper feeding unit 7 pushes the paper towel to the external conveyor belt to proceed to the next process.

[0058] Preferably, the paper feeding speed of the paper cutting and folding unit 2 is 100-120 m / min.

[0059] In this embodiment, by adding the first robot, the paper feeding speed of the paper cutting and folding unit 2 can be met to be 110 m / min, thereby achieving high-efficiency production of 20 stacks of paper towels per minute.

[0060] The method provided by the present invention adds a first robot between the second robot unit 4 and the paper receiving unit 6. The first robot unit 3, the second robot unit 4, and the paper receiving unit 6 are all capable of receiving paper towels. When the folding module 24 is at a faster speed, more folded paper towels can be received during paper towel production through the linkage effect of the first robot, the first robot unit 3, and the second robot unit 4, thereby improving the overall production efficiency.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A paper towel folding device, characterized in that: The invention comprises a frame and a paper cutting and folding unit installed on the frame, a first manipulator unit, a symmetrically arranged second manipulator unit, a third manipulator unit, and a paper receiving unit; the symmetrically arranged second manipulator unit is located below the paper cutting and folding unit; the paper receiving unit is located below the second manipulator unit; the first manipulator unit and the third manipulator unit are located between the second manipulator unit and the paper feeding unit; The processing method of the paper towel folding processing device comprises the following steps: Step 1: The paper towel is transported to the paper cutting and folding unit for punching, folding, and cutting, and then transported downward to the second robot unit; Step 2: When the first paper towel reaches the second manipulator unit at the preset position, the symmetrically arranged second manipulator units approach each other, clamp the paper towel and move downward with the paper towel; Step 3: The first robot unit moves to the bottom of the paper towel to receive the paper towel, the first paper towel is folded at a preset position and moves downward with the paper towel, and the second robot unit moves back to the initial position; Step 4: The paper receiving unit moves upward to receive the paper towels on the first robot unit, and moves downward with the paper towels; when the number of paper towels on the paper receiving unit reaches a preset number, the third robot unit presses the upper surface of the paper towels, and when it reaches the next process position, the third robot unit moves back to the initial position; The preset position is a position of 1 / 8 to 1 / 4 of the length of the front end of the first paper towel.

2. The paper towel folding device according to claim 1, characterized in that: The second robot unit is provided with an air blowing pipe.

3. The paper towel folding device according to claim 1, characterized in that: It also includes a paper feeding unit; the paper feeding unit is used to push the paper towel on the paper receiving unit to the next process.

4. The paper towel folding device according to claim 1, characterized in that: The paper cutting and folding unit comprises a punching module, a cutting module, a lower knife roller and a folding module; the punching module, the lower knife roller and the folding module are arranged on the frame in sequence; the cutting module is located on the side of the lower knife roller close to the paper towel conveying.

5. The paper towel folding device according to claim 1, characterized in that: The specific step 2 is as follows: when the 1 / 4 length position of the front end of the first paper towel reaches the second manipulator unit, the two second manipulator units move towards each other and clamp the paper towel, and the air blowing tube on the second manipulator unit located above the first manipulator unit blows air towards the paper towel to tilt the end of the paper towel.

6. The paper towel folding device according to claim 1, characterized in that: The method further comprises step 5: when the paper receiving unit reaches the position of the next process, the paper feeding unit pushes the paper towel on the paper receiving unit to the next process.

7. The paper towel folding device according to claim 1, characterized in that: The step 1 is specifically as follows: after the paper towel is conveyed to the lower knife roller, the punching module punches gap punching lines on the paper towel according to the length of a piece of paper towel, and the lower knife roller conveys the paper towel with the gap punching lines to the folding module for folding; when the number of paper towels reaches a preset number, the cutting module approaches the lower knife roller to cut the paper towel.

8. The paper towel folding device according to claim 1, characterized in that: The paper feeding speed of the paper cutting and folding unit is 100-120 m / min.

9. The paper towel folding device according to claim 1, characterized in that: The step 3 is specifically as follows: the first robot unit moves to the bottom of the paper towel, moves upward to press the end of the paper towel, so that the paper towel forms a 1 / 4 length fold, and moves downward with the paper towel, and the second robot unit moves back to the initial position.

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