Multi-connected paper roll group component, multi-connected paper roll group device and its working method

Abstract

The present invention discloses a multi-connected paper roller group component, comprising: at least one group of roller groups, each of the roller groups being adapted to be independently driven to rotate, and two roller assemblies arranged vertically. The two roller assemblies are respectively an upper roller assembly and a lower roller assembly. Among them, each roller assembly includes a roller shaft and a roller group mounted on the roller shaft. The roller group is composed of rollers arranged axially in sequence along the corresponding roller shaft. A paper feeding channel suitable for generating rigidity of the paper under the extrusion of the two roller groups is formed between the two roller groups in the same group of roller groups. The two roller assemblies in the same group of roller groups are arranged staggeredly along the paper feeding direction. It can solve the problem of paper separation, and can also realize the function of conveying the paper, which is beneficial to preventing the phenomenon of paper re-feeding.

Description

Technical Field

[0001] The present invention relates to a multi - sheet roller group component, a multi - sheet roller group device and a working method thereof. Background Art

[0002] At present, since the papers to be separated have special properties, they are relatively thin and light (less than 60 g), and the surface roughness of each layer of paper is inconsistent, which greatly increases the difficulty of separating multi - sheet papers.

[0003] The relatively reliable paper separation method adopted in the self - service multi - sheet field is the four - roller method. Two groups of rollers are used to pressurize the separation roller and engage the paper feed roller for paper separation processing. For example, a four - roller paper separation device disclosed in a Chinese patent with the publication number CN113666146A; the four - roller method will not cause double - feeding for processing papers with three or fewer sheets, but it may cause double - feeding for processing multi - sheet papers with more than three sheets; moreover, the four - roller structure depends on the accuracy of the spring pressure. Once the pressure deviates, double - feeding will inevitably occur; since the separation roller will wear during the separation process, and the separation roller will also be affected by paper powder and paper coatings during the separation process, these factors will affect the force coordination among the roller friction, spring pressure and torque limiter, resulting in problems such as paper picking or separation failure.

[0004] The double - feeding of the four - roller separation can only be found after all the papers are processed, but it is already too late at this time. After double - feeding, the device will report a fault and stop working, and then manual intervention is required for processing. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a multi - sheet roller group component, which can not only produce a separation effect on the papers, but also realize the conveying function of the papers, and is beneficial to preventing the occurrence of double - feeding of the papers.

[0006] The technical solution adopted by the present invention to solve the above - mentioned technical problem is: a multi - sheet roller group component, which includes at least one group of roller groups. Each roller group includes two roller assemblies that are adapted to be independently driven to rotate and are arranged one above the other. The two roller assemblies are an upper roller assembly and a lower roller assembly respectively; wherein,

[0007] Each roller assembly includes a roller shaft and a roller group mounted on the roller shaft. The roller group includes rollers arranged in sequence along the axial direction of the corresponding roller shaft;

[0008] A paper - feeding channel suitable for deforming under the extrusion of the two roller groups to make the paper rigid is formed between the two roller groups in the same group of roller groups;

[0009] The two roller assemblies in the same roller group are arranged offset in the paper feeding direction, and the roller group of the upper roller assembly is located behind the roller group of the lower roller assembly;

[0010] When the roller group of the upper roller assembly is controlled to stop rotating and the roller group of the lower roller assembly is controlled to rotate clockwise, the roller group is in a separating working state to separate the paper in the paper feeding channel;

[0011] When the roller group of the upper roller assembly is controlled to rotate counterclockwise and the roller group of the lower roller assembly is controlled to rotate clockwise, the roller group is in a conveying working state to convey the paper in the paper feeding channel;

[0012] When the roller group of the upper roller assembly is controlled to stop rotating and the roller group of the lower roller assembly is controlled to stop rotating, the roller group is in a non-conveying working state to stop conveying the paper in the paper feeding channel.

[0013] Furthermore, a method is provided to deform the paper to make it rigid. The rollers between the two roller assemblies in the same roller group are arranged staggeredly, so that the paper in the paper feeding channel is deformed into a wave-like structure.

[0014] Furthermore, the staggering distance e between the two roller assemblies in the same roller group along the paper feeding direction is e = r / 5; where r is the radius of the roller.

[0015] Furthermore, the vertical distance h between the two roller shafts in the same roller group in the up and down direction ranges from r < h < 2r; where r is the radius of the roller.

[0016] To solve the problem of multi-sheet paper conveying, separation and re-feeding during the conveying process, the present invention also provides a multi-sheet paper roller group device for conveying and separating N-sheet paper, including the above multi-sheet paper roller group components, and the roller group is N - 1 groups.

[0017] Furthermore, the multi-sheet paper roller group device further includes an upper drive source component connected to the upper roller assembly to drive the upper roller assembly to rotate and a lower drive source component connected to the lower roller assembly to drive the lower roller assembly to rotate.

[0018] Furthermore, in order to reasonably coordinate the actions of the upper drive source component and / or the lower drive source component to drive the rotation of the upper roller assembly and / or the lower roller assembly, and complete the conveying and separation of multi-sheet paper, it further includes a controller and a sensor group including sensors. The sensor group is connected to the controller, and the controller is respectively connected to the upper drive source component and the lower drive source component; where,

[0019] The sensors are respectively used to collect the presence or absence information of the paper at corresponding positions in the paper feeding direction;

[0020] The controller coordinates and controls the upper drive source component and the lower drive source component according to the presence or absence information fed back by the sensor to drive the rotation of the upper roller assembly and / or the lower roller assembly.

[0021] Furthermore, a sensor is correspondingly arranged for each roller group, and the sensor is located behind the corresponding roller group. The distance M between the center of the acquisition head of the sensor and the roller shaft of the upper roller assembly (1) of the corresponding roller group in the paper feeding direction and the length m of the paper in the paper feeding direction satisfy the following relational expression: 2 / 3m ≤ M < m.

[0022] The present invention also provides a working method for a multi - sheet roller group device, which is used for the conveyance and separation of two - sheet paper. The roller group is one group, and the steps of the method include:

[0023] When the leading end of the two - sheet paper is conveyed to enter the roller group, control the roller group to be in a separated working state;

[0024] When the trailing end of the lower sheet of the two - sheet paper disengages from the roller group, control the roller group to be in a conveyance working state to convey the upper sheet of the two - sheet paper.

[0025] The present invention also provides a working method for a multi - sheet roller group device, which is used for the conveyance and separation of three - sheet paper. The roller group is two groups, which are respectively the first roller group and the second roller group from front to back. The steps of the method include:

[0026] When the leading end of the three - sheet paper is conveyed to enter the first roller group, control the first roller group to be in a separated state;

[0027] When a sheet of paper disengages from the first roller group and the trailing end of the paper disengages from the first roller group, control the first roller group to be in a non - conveyance working state, control the second roller group to be in a conveyance working state to convey the disengaged paper until the leading end of the paper enters the second roller group, and then control the second roller group to be in a separated working state;

[0028] Then, perform the following operations: when no paper disengages from the second roller group within n time after controlling the second roller group to be in a separated working state, control the first roller group to be in a separated working state and control the second roller group to be in a conveyance working state; when paper disengages from the second roller group within n time after controlling the second roller group to be in a separated working state and the trailing end of the paper disengages from the second roller group, control both the first roller group and the second roller group to be in a conveyance working state.

[0029] After adopting the above technical solution, the present invention does not adopt the original method of separating and conveying paper by the mutual engagement of four rollers, but forms a rigid conveying channel by deforming the paper through setting the layout and structure of the two roller assemblies in the roller group, without substantial engagement between them, and sets the two roller assemblies vertically offset to facilitate the entry of paper into the roller group. For the roller group with such a structure, different drive source assemblies are used to drive the actions of the upper roller assembly and the lower roller assembly, so that it has at least three states, namely the separation working state, the conveying working state and the non-conveying working state, so as to realize the separation and conveying of paper, which is very convenient to use and can help avoid the phenomenon of paper double feeding; in addition, when separating N-sheet paper with the multi-sheet paper roller group device of the present invention, N-1 groups of roller groups are set. When paper double feeding occurs in the previous group of roller groups, it is intercepted by the next group of roller groups and the double-fed paper can be separated again, thus avoiding the phenomenon of paper separation and double feeding at the end. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the multi-sheet paper roller group component in Embodiment 1;

[0031] Figure 2 is Figure 1 the left view of;

[0032] Figure 3 is the structural schematic of the multi-sheet paper roller group device in Embodiment 2 Figure 1 ;

[0033] Figure 4 is the structural schematic of the multi-sheet paper roller group device in Embodiment 2 Figure 2 ;

[0034] Figure 5 is the working schematic of the multi-sheet paper roller group device in Embodiment 4 Figure 1 ;

[0035] Figure 6 is the working schematic of the multi-sheet paper roller group device in Embodiment 4 Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to specific embodiments in conjunction with the drawings.

[0037] Embodiment 1

[0038] As Figures 1 - 2 shown, a multi-sheet paper roller group component includes at least one group of roller groups. Each roller group includes two roller assemblies that are adapted to be independently driven to rotate and are arranged vertically. The two roller assemblies are the upper roller assembly 1 and the lower roller assembly 2 respectively;

[0039] The roller assembly includes a roller shaft 11 and a roller set 12 mounted on the roller shaft 11. The roller set 12 includes rollers 12a arranged in sequence along the axial direction of the corresponding roller shaft 11.

[0040] A paper feeding channel suitable for generating rigidity of the paper 100 under the extrusion of two roller sets is formed between two roller sets in the same group of roller sets.

[0041] Two roller assemblies in the same group of roller sets are arranged staggeredly along the paper feeding direction, and the roller set of the upper roller assembly 1 is located behind the roller set of the lower roller assembly 2.

[0042] When the roller set of the upper roller assembly 1 is controlled to stop rotating and the roller set of the lower roller assembly 2 is controlled to rotate clockwise, the roller set is in a separating working state to separate the paper 100 in the paper feeding channel.

[0043] When the roller set of the upper roller assembly 1 is controlled to rotate counterclockwise and the roller set of the lower roller assembly 2 is controlled to rotate clockwise, the roller set is in a conveying working state to convey the paper 100 in the paper feeding channel.

[0044] When the roller set of the upper roller assembly 1 is controlled to stop rotating and the roller set of the lower roller assembly 2 is controlled to stop rotating, the roller set is in a non-conveying working state to stop conveying the paper 100 in the paper feeding channel.

[0045] In this embodiment, as Figure 1 shown, the upper roller assembly 1 includes four rollers 12a, and the lower roller assembly 2 includes three rollers 12a, but the number of rollers 12a is not limited to this.

[0046] In this embodiment, as Figure 1 shown, the rollers 12a between two roller assemblies in the same group of roller sets are arranged staggeredly, so that the paper 100 in the paper feeding channel is deformed into a wave-like structure. In this way, there is no substantial meshing between the roller sets of the upper roller assembly 1 and the lower roller assembly 2, so that the paper 100 is extruded by the rollers 12a to generate a wave-shaped deformation, which can make the relatively flat paper 100 generate corresponding deformation under the action of the rollers 12a and become a wave shape, so that the paper 100 generates a certain rigidity.

[0047] In this embodiment, in order to enable the paper 100 to smoothly enter the roller set, as Figure 2 shown, the rollers 12a between the lower roller assembly 2 and the upper roller assembly 1 are staggered by a certain distance, the lower rollers 12a rotate clockwise, and the upper rollers 12a rotate counterclockwise to bring the paper into the roller set.

[0048] Specifically, the staggering distance e between two roller assemblies in the same group of roller sets along the paper feeding direction can be r / 5; where r is the radius of the roller 12a.

[0049] As Figure 2 shown, the range of the vertical distance h between the two roller shafts in the same roller group in the up and down direction can specifically be r < h < 2r. Preferably, h = r + 5 mm;

[0050] As Figure 1 shown, the spacing L between adjacent roller wheels 12a in the roller assembly can be set to L = 5r + 5 mm.

[0051] Embodiment 2

[0052] As Figure 3 and 4 shown, a multi - sheet paper roller group device for transporting and separating N - sheet papers includes the multi - sheet paper roller group components in Embodiment 1, and the number of roller groups is N - 1.

[0053] As Figure 3 and 4 shown, the multi - sheet paper roller group device further includes an upper drive source component connected to the upper roller assembly 1 to drive the upper roller assembly 1 to rotate and a lower drive source component connected to the lower roller assembly 2 to drive the lower roller assembly to rotate.

[0054] In this embodiment, the upper drive source component and the lower drive source component can adopt existing technologies, and the structure thereof will not be elaborated in this embodiment. It may include a power source and a transmission component. The power source drives the roller assembly to rotate through the transmission component. The power source can be a motor, and the transmission component can be a gear pair or a belt pulley pair.

[0055] Specifically, as Figure 3 and 4 shown, the multi - sheet paper roller group device further includes a controller and a sensor group including sensors. The sensor group is connected to the controller, and the controller is respectively connected to the upper drive source component and the lower drive source component; wherein,

[0056] the sensors are respectively used to collect information on the presence or absence of paper at corresponding positions in the paper feeding direction;

[0057] The controller coordinately controls the upper drive source component and the lower drive source component according to the presence or absence information fed back by the sensors to drive the rotation of the upper roller assembly 1 and / or the lower roller assembly 2.

[0058] Each roller group is correspondingly provided with a sensor, and the sensor is located behind the corresponding roller group. The distance M between the acquisition head of the sensor and the center of the roller shaft of the upper roller assembly 1 of the corresponding roller group in the paper feeding direction and the length m of the paper in the paper feeding direction satisfy the following relational expression: 2 / 3m ≤ M < m.

[0059] N can be 2 for transporting and separating two - ply paper. The roller group includes 1 set, and specifically 1 sensor is provided. Of course, N can be 3 for transporting and separating three - ply paper. The roller group includes two sets, and specifically 2 sensors are provided.

[0060] Embodiment 3

[0061] A working method of the multi - ply paper roller group device in Embodiment 2. The method is used for transporting and separating two - ply paper. As Figure 3 shown, the roller group is 1 set, and the sensor is specifically 1, which is the first sensor A. The lower drive source component that drives the lower roller assembly 2 to rotate is the first power source component 3, and the upper drive source component that drives the upper roller assembly 1 to rotate is the second power source component 4. Specifically, on the printer, the printer also includes a paper - feeding transport roller group and a paper - feeding sensor. The steps of the method include:

[0062] S1: Control the roller group to be in the transport working state. When the leading end of the two - ply paper is transported to enter the roller group, control the roller group to be in the separation working state. The action of the roller group in step S1 can be controlled by responding to the paper - feeding sensor. That is, after the paper - feeding sensor responds, control the roller group to be in the transport working state. After a response delay t1, control the roller group to be in the separation working state. The duration of t1 can be set as the duration from the start of the paper - feeding sensor response to the time when the paper is transported to the roller group.

[0063] S2: When the trailing end of the lower paper 10 of the two - ply paper exits the roller group, control the roller group to be in the transport working state to transport the upper paper 20 of the two - ply paper. The action of the roller group in step S2 can be controlled by responding to the first sensor A. Specifically, when the first sensor A recognizes that there is paper, it indicates that the trailing end of the lower paper 10 has exited the roller group.

[0064] Specifically, in this embodiment, when feeding paper, the paper feed sensor responds to control the paper feed conveying roller set to convey forward, and at the same time control the roller set to be in the conveying working state, that is, the first power source component 3 drives the lower roller assembly 2 to rotate clockwise, and the second power source component 4 drives the upper roller assembly 1 to rotate counterclockwise to bring the two-overlapped sheets of paper into the roller set together. At this time, it is the t1 time after the paper feed sensor responds. At this time, the second power source component 4 stops driving, and the upper roller assembly 1 will stop rotating. The first power source component 3 continues to drive. Since f = μFn and the friction coefficient between the roller 12a and the paper is greater than the friction coefficient between the papers, the frictional force f1 between the roller 12a and the paper is greater than the frictional force f2 between the papers. At this time, the first power source component 3 continues to drive the lower roller assembly 2 to rotate clockwise to drive the second sheet of paper (i.e., the lower sheet 10) in contact with it to convey forward. Therefore, the lower surface of the second sheet of paper will be subject to the forward frictional force f1 of the roller 12a, and the upper surface of the second sheet of paper will be subject to a backward frictional force f2 between the papers. Therefore, the resultant force acting on the second sheet of paper in the forward direction is f1 - f2. Since there is a relative motion tendency between the second sheet of paper and the first sheet of paper (i.e., the upper sheet 20), the lower surface of the first sheet of paper is subject to the forward f2. At this time, since the upper roller assembly 1 is in a stationary state, the upper surface of the first sheet of paper is subject to the static frictional force f1 of the roller 12a of the upper roller assembly 1. Since f2 < f1, the forward f2 of the first sheet of paper is not sufficient to overcome the static friction of the static frictional force f1. Therefore, the first sheet of paper remains stationary, and the two sheets are separated in this way. When the first sensor A detects that the paper has separated, then the second power source component 4 will drive the upper roller assembly 1 to convey counterclockwise to convey the upper sheet 20 out.

[0065] Embodiment 4

[0066] A working method of the multi-sheet paper roller set device in Embodiment 2. The method is used for the conveying and separation of triple sheets of paper. The roller set is divided into two groups, which are the first roller group and the second roller group from front to back. There are two sensors, which are the first sensor A and the second sensor B from front to back. The lower drive source component connected to the lower roller assembly 2 of the first roller group is the first power source component 3, the upper drive source component connected to the upper roller assembly 1 of the first roller group is the second power source component 4, the lower drive source component connected to the lower roller assembly 2 of the second roller group is the third power source component 5, and the upper drive source component connected to the upper roller assembly 1 of the second roller group is the fourth power source component 6; Specifically, on a printer, the printer further includes a paper feed conveying roller set and a paper feed sensor. The steps of the method include:

[0067] S1: Control the first roller group to be in the conveying working state. When the leading end of the triple-sheet paper is conveyed to enter the first roller group, control the first roller group to be in the separating state. The action of the first roller group in step S1 can be controlled in response to the paper feed sensor, that is, after the paper feed sensor responds, control the first roller group to be in the conveying working state. After a response delay of t1, control the first roller group to be in the separating working state. The duration of t1 can be set to the duration from the start of the paper feed sensor response to the conveyance of the paper to the first roller group.

[0068] S2: When a sheet of paper exits the first roller group and the trailing end of the sheet of paper exits the first roller group, control the first roller group to be in the non-conveying working state, control the second roller group to be in the conveying working state to convey the exited sheet of paper until the leading end of the sheet of paper enters the second roller group, and then control the second roller group to be in the separating working state. The actions of the first roller group and the second roller group in step S2 can be controlled in response to the first sensor A. When the first sensor A detects a sheet of paper, it indicates that a sheet of paper has exited the first roller group and the trailing end of the sheet of paper has exited the first roller group. The switching of the second roller group from the conveying working state to the separating working state can be controlled by extending for a time t2 after the first sensor A responds. Here, the duration control of t2 only needs to ensure that the paper is conveyed from the start of the response of the acquisition head of the first sensor A to the second roller group.

[0069] S3: Then perform the following operations: When no sheet of paper exits the second roller group within n time after controlling the second roller group to be in the separating working state, control the first roller group to be in the separating working state and control the second roller group to be in the conveying working state; when a sheet of paper exits the second roller group within n time and the trailing end of the sheet of paper exits the second roller group, control both the first roller group and the second roller group to be in the conveying working state. The actions of the first roller group and the second roller group in step S3 can be controlled in response to the second sensor B. When the first sensor A detects that a sheet of paper has passed and the second sensor B does not detect a sheet of paper after M = t2 + n time, that is, when no sheet of paper exits the second roller group within n time after controlling the second roller group to be in the separating working state, no double feed occurs at this time; when the first sensor A detects that a sheet of paper has passed and the second sensor B detects a sheet of paper after M = t2 + n time, it indicates that a sheet of paper has exited the second roller group and the trailing end of the sheet of paper has exited the second roller group within n time after controlling the second roller group to be in the separating working state, and a double feed phenomenon occurs at this time.

[0070] Specifically, the specific operation process of separating and conveying three - ply paper using the multi - ply paper separation device of this embodiment is as follows: If there is no double - feed phenomenon in the first roller group (that is, the third - ply paper and the second - ply paper are not separated from the first roller group overlapping each other): When feeding paper, the paper - feeding sensor responds, controls the paper - feeding conveying roller group to convey forward, and at the same time controls the first roller group to be in the conveying working state, that is, the first power source component 3 drives the lower roller assembly 2 of the first roller group to rotate clockwise, and the second power source component 4 drives the upper roller assembly 1 of the first roller group to rotate counter - clockwise to bring the three - ply overlapping paper into the first roller group together. At this time, it is t1 time after the paper - feeding sensor responds. At this time, the second power source component 4 stops driving, and the upper roller assembly 1 of the first roller group will stop rotating. The first power source component 3 continues to drive, and the lower roller assembly 2 of the first roller group drives the third - ply paper (i.e., the lower paper 10) in contact with it to convey forward. Therefore, the lower surface of the third - ply paper will be subject to the forward frictional force f1 of the roller 12a. Since the third - ply paper and the second - ply paper (i.e., the middle paper 30) have relative movement, the upper surface of the third - ply paper will be subject to the backward frictional force f2. Therefore, the resultant force acting on the third - ply paper in the forward direction is f1 - f2; at the same time, the lower surface of the second - ply paper will be subject to the forward frictional force f2; and at this time, the upper surface of the first - ply paper (i.e., the upper paper 20) is subject to the static friction f1 of the roller 12a. Since the first - ply paper and the second - ply paper have no relative movement, the upper surface of the second - ply paper is subject to the backward frictional force f2, and the lower surface of the first - ply paper is subject to the forward frictional force f2. Therefore, the upper and lower surfaces of the second - ply paper are each subject to the frictional force f2 between the first - ply paper and the third - ply paper in opposite directions; the forward frictional force f2 acting on the first - ply paper is not sufficient to overcome the static friction f1 of the roller 12a, so the first - ply paper will remain stationary; the resultant force f1 - f2 acting on the third - ply paper is greater than f2, so the third - ply paper can be smoothly separated. When the separated third - ply paper reaches the first sensor A, the first sensor A detects the presence of paper, controls the first roller group to be in the non - conveying working state, and controls the second roller group to be in the conveying working state to bring the paper into the second roller group. At this time, it is the situation of the response delay t2 of the first sensor A. At this time, the second roller group is further controlled to be in the separation working state. When the second sensor B does not detect the presence of paper after M = t2 + n time from the response of the first sensor A detecting the presence of paper, that is, there is no double - feed phenomenon. At this time, there are still the first - ply paper and the second - ply paper left in the middle of the first roller group. The third power source component 5 continues to drive the lower roller assembly 2 of the second roller group, and the fourth power source component 6 continues to drive the upper roller assembly 1 of the second roller group to convey the third - ply paper out. When the second roller assembly conveys the third - ply paper, the first roller group simultaneously separates the second - ply paper and the first - ply paper, and the separation principle is the same as that in the case of separating two - ply paper, so that the three - ply paper can be smoothly separated, as Figure 5 shown;

[0071] If double feeding occurs when the triple-sheet paper separates the third sheet at the first roller group, and the third sheet and the second sheet are overlapped and separated from the first roller group, when the separated paper reaches the first sensor A and the first sensor A detects the presence of paper, the first roller group is controlled to stop operating, and the first sheet is left in the first roller group. The third power source component 5 drives the lower roller assembly 2 of the second roller group to rotate clockwise, and the fourth power source component 6 drives the upper roller assembly 1 of the second roller group to rotate counterclockwise to bring the paper into the second roller group. At this time, it is the situation of delaying t2 after the first sensor A responds. Then, the second roller group is controlled to be in the separating working state, and the third sheet and the second sheet are separated in the second roller group. After the third sheet is separated from the second roller group and reaches the second sensor B, that is, when the second sensor B detects the presence of paper after M = t2 + n time when the first sensor A detects the passage of paper. At this time, only the first sheet remains in the middle of the first roller group. The first roller group and the second roller group are controlled to be in the conveying working state. The first sheet is conveyed forward through the first roller group, and the second sheet is conveyed forward through the second roller group. That is to say, regardless of whether there is double feeding or not, the second set of rollers performs a separation action once. If there is double feeding, it will be separated. If there is no double feeding, it will wait to be conveyed out, as Figure 6 shown.

[0072] In the specific embodiments described above, the technical problems solved, the technical solutions, and the beneficial effects of the present invention are further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi - sheet roll group component, characterized in that, it includes at least one group of roll groups, and each roll group includes two roll assemblies that are adapted to be independently driven to rotate and are arranged vertically. The two roll assemblies are the upper roll assembly (1) and the lower roll assembly (2) respectively; wherein, each roll assembly includes a roll shaft (11) and a roll wheel group (12) mounted on the roll shaft (11), and the roll wheel group (12) includes roll wheels (12a) arranged in sequence along the axial direction of the corresponding roll shaft (11); a paper - feeding channel suitable for generating rigidity of the paper (100) under the extrusion of the two roll wheel groups is formed between the two roll wheel groups in the same group of roll groups; the two roll assemblies in the same roll group are arranged offset in the paper - feeding direction, and the roll wheel group of the upper roll assembly (1) is located behind the roll wheel group of the lower roll assembly (2); when the roll wheel group of the upper roll assembly (1) is controlled to stop rotating and the roll wheel group of the lower roll assembly (2) is controlled to rotate clockwise, the roll group is in a separating working state to separate the paper (100) in the paper - feeding channel; when the roll wheel group of the upper roll assembly (1) is controlled to rotate counter - clockwise and the roll wheel group of the lower roll assembly (2) is controlled to rotate clockwise, the roll group is in a conveying working state to convey the paper (100) in the paper - feeding channel; when the roll wheel group of the upper roll assembly (1) is controlled to stop rotating and the roll wheel group of the lower roll assembly (2) is controlled to stop rotating, the roll group is in a non - conveying working state to stop conveying the paper (100) in the paper - feeding channel; the roll wheels (12a) between the two roll assemblies in the same roll group are arranged staggeredly, so that the paper (100) in the paper - feeding channel is deformed into a wave - like structure; the offset distance e between the two roll assemblies in the same roll group in the paper - feeding direction is e = r / 5; wherein, r is the radius of the roll wheel (12a); the vertical distance h between the two roll shafts in the same roll group in the up - and - down direction ranges from r < h < 2r; wherein, r is the radius of the roll wheel (12a).

2. A multi - sheet roll group device, characterized in that, for the conveyance and separation of N - sheet papers, it includes the multi - sheet roll group component as described in claim 1, and the number of roll groups is N - 1.

3. The multi - sheet roll group device according to claim 2, characterized in that, it further includes an upper drive source component connected to the upper roll assembly (1) to drive the upper roll assembly (1) to rotate and a lower drive source component connected to the lower roll assembly (2) to drive the lower roll assembly to rotate.

4. The multi - sheet roll group device according to claim 3, characterized in that, it further includes a controller and a sensor group including sensors. The sensor group is connected to the controller, and the controller is respectively connected to the upper drive source component and the lower drive source component; wherein, the sensors are respectively used to collect information on the presence or absence of paper at corresponding positions in the paper - feeding direction; the controller coordinately controls the upper drive source component and the lower drive source component according to the presence - or - absence information fed back by the sensors to drive the rotation of the upper roll assembly (1) and / or the lower roll assembly (2).

5. The multi - sheet roll group device according to claim 4, characterized in that, A sensor is correspondingly arranged for each roll group, and the sensor is located behind the corresponding roll group. The distance M in the paper feeding direction between the acquisition head of the sensor and the center of the roll shaft of the upper roll assembly (1) of the corresponding roll group and the length m of the paper in the paper feeding direction satisfy the following relational expression: 2 / 3m ≤ M < m.

6. A working method of a multi-sheet roll group device according to any one of claims 2 to 5, characterized in that the method is used for the conveyance and separation of two-sheet paper, the roll group is one group, and the steps of the method include: When the leading end of the two-sheet paper is conveyed to enter the roll group, controlling the roll group to be in a separated working state; When the trailing end of the lower sheet (10) of the two-sheet paper exits the roll group, controlling the roll group to be in a conveying working state to convey the upper sheet (20) of the two-sheet paper.

7. A working method of a multi-sheet roll group device according to any one of claims 2 to 5, characterized in that the method is used for the conveyance and separation of three-sheet paper, the roll groups are two groups, which are the first roll group and the second roll group from front to back respectively, and the steps of the method include: When the leading end of the three-sheet paper is conveyed to enter the first roll group, controlling the first roll group to be in a separated state; When a sheet exits the first roll group and the trailing end of the sheet exits the first roll group, controlling the first roll group to be in a non-conveying working state, controlling the second roll group to be in a conveying working state to convey the exited sheet to the leading end of the sheet to enter the second roll group, and then controlling the second roll group to be in a separated working state; Then the following operations are performed: When no sheet exits the second roll group within n time after controlling the second roll group to be in a separated working state, controlling the first roll group to be in a separated working state and controlling the second roll group to be in a conveying working state; When a sheet exits and the trailing end of the sheet exits the second roll group within n time after controlling the second roll group to be in a separated working state, controlling both the first roll group and the second roll group to be in a conveying working state.

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