Paper feeding device and image forming device

Abstract

The present invention provides a paper feeding device and an image forming device. The paper feeding device includes: a paper feeding box for storing paper; a paper feeding roller for extracting paper; a conveying belt for conveying paper; a separation roller group for separating paper; a first pressure regulating component for regulating a first pressure when the paper feeding roller extracts paper; a second pressure regulating component for regulating a second pressure when the separation roller group performs separation processing; a driving component for driving the first pressure regulating component and the second pressure regulating component respectively; and a detection control unit configured to control the driving component to drive the first pressure regulating component and the second pressure regulating component respectively based on paper information of the paper. The driving component can be used to adjust the pressure of the paper feeding roller and the separation roller group respectively, effectively reducing manufacturing costs, simplifying operation, and greatly improving user experience.

Description

Technical Field

[0001] The present invention relates to the field of printing technology, and in particular to a paper feeding device and an image forming device. Background Art

[0002] In existing paper feeding devices, problems such as paper jams, paper failure when feeding paper by the paper feeding roller, and paper overlap often occur. These problems can be improved to a certain extent by adjusting the pressure of the paper feeding roller and the separation roller in the paper feeding device.

[0003] Prior art proposes adding devices to the paper feeding device to adjust the pressure of the paper feed roller and the separating roller. This allows the pressure of the paper feed roller and the separating roller to be adjusted to alleviate problems such as paper jams, paper failure during feeding, and paper overlap. However, this technology still has many drawbacks in practical applications. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a paper feeding device and an image forming device, which can respectively adjust the pressure of the paper feeding roller and the separation roller through the same driving component, and can adjust the pressure of the paper feeding roller and the separation roller in advance.

[0005] To solve the above problems, the present invention provides a paper feeding device, comprising: a paper feeding box for storing a paper stack consisting of multiple sheets of paper; a paper feeding roller for extracting the paper from the top of the paper stack; a conveying belt for conveying the extracted paper; a separation roller group for separating the extracted paper; a first pressure regulating component connected to the paper feeding roller, for adjusting a first pressure when the paper feeding roller extracts paper; a second pressure regulating component connected to the separation roller group, for adjusting a second pressure when the separation roller group performs separation processing; a driving component for driving the first pressure regulating component and the second pressure regulating component respectively; and a detection control unit, the detection control unit being configured to: control the driving component to drive the first pressure regulating component and the second pressure regulating component respectively according to paper information of the paper, so that the first pressure and the second pressure are within a preset pressure range corresponding to the paper information.

[0006] Optionally, the first pressure adjustment component includes: an adjustment base, movably connected to the paper feed roller; an adjustment block, capable of sliding back and forth on the adjustment base; a connecting rod, including a first connecting end and a second connecting end relative to each other, the first connecting end being movably connected to the adjustment block; and a first adjusting gear movably connected to the second connecting end, the first adjusting gear rotates unidirectionally under the drive of the driving component, and during the unidirectional rotation of the first adjusting gear, the adjustment block is driven by the connecting rod to slide back and forth on the adjustment base, and during the reciprocating sliding of the adjustment block from one side to the other side of the adjustment base, the pressure applied by the adjustment base on the paper feed roller gradually increases or decreases.

[0007] Optionally, the first pressure regulating assembly further includes: a first one-way ratchet gear meshing with the first regulating gear; and a transmission gear meshing with the first one-way ratchet gear.

[0008] Optionally, the separation roller group includes: a first separation roller located above the conveying path; and a second separation roller located below the conveying path.

[0009] Optionally, the second pressure adjustment assembly includes: an adjustment handle, including a first handle end and a second handle end relative to each other, the first handle end being movably connected to the second separating roller; a tension spring, including a first tensioning end and a second tensioning end relative to each other, the first tensioning end being fixedly connected to the second handle end; and a second adjustment gear, fixedly connected to the second tensioning end, the second adjustment gear rotates unidirectionally under the drive of the drive assembly, and during the unidirectional rotation of the second adjustment gear, drives the tension spring to reciprocately stretch the adjustment handle, and during the reciprocating stretching of the adjustment handle by the tension spring, the tension applied by the adjustment handle to the second separating roller gradually increases or decreases.

[0010] Optionally, it also includes: a second one-way ratchet gear, meshing with the second adjusting gear.

[0011] Optionally, the drive assembly includes: a drive gear, which is respectively engaged with the transmission gear and the second one-way ratchet gear; and a drive motor, which is connected to the drive gear and is used to drive the drive gear to rotate in a first rotation direction or a second rotation direction, the first rotation direction is opposite to the second rotation direction, and when the drive gear rotates in the first rotation direction or the second rotation direction, only one of the first adjustment gear and the second adjustment gear rotates.

[0012] Optionally, the detection control unit includes: a first initial position sensor for detecting the initial position of the first adjusting gear; a first circle counting sensor for recording the number of circles rotated by the first one-way ratchet gear; a second initial position sensor for detecting the initial position of the second adjusting gear; and a second circle counting sensor for recording the number of circles rotated by the second one-way ratchet gear.

[0013] Optionally, the detection control unit is configured to: start an initial position self-detection mode, and the initial position self-detection mode includes: when it is detected that the first adjusting gear is not in the initial position, controlling the drive motor to drive the drive gear to rotate along the first rotation direction until the first adjusting gear is detected to be in the initial position; and when it is detected that the second adjusting gear is not in the initial position, controlling the drive motor to drive the drive gear to rotate along the second rotation direction until the second adjusting gear is detected to be in the initial position.

[0014] Optionally, the detection control unit is configured to: after completing the initial position self-test mode, start the previous printing pressure adjustment mode, and the previous printing pressure adjustment mode includes: when the paper information of the paper is included in the entered paper information table, controlling the drive motor to drive the drive gear to rotate along the first rotation direction according to the paper information table until the recorded number of rotations of the first one-way ratchet gear reaches a first preset number of rotations, so that the first pressure is within the preset pressure range corresponding to the paper information; and controlling the drive motor to drive the drive gear to rotate along the second rotation direction according to the paper information table until the recorded number of rotations of the second one-way ratchet gear reaches a second preset number of rotations, so that the second pressure is within the preset pressure range corresponding to the paper information.

[0015] Optionally, the detection control unit is configured to: after completing the previous printing pressure adjustment mode, start the next printing pressure adjustment mode, and the next printing pressure adjustment mode includes: judging whether the paper information of the paper at the time of the next printing and the paper information of the paper at the time of the previous printing are located in the same preset paper information range; if the paper information of the two prints is located in the same preset paper information range, the next printing is performed with the first pressure and the second pressure that have been adjusted at the time of the previous printing; if the paper information of the two prints is not located in the same preset paper information range, restarting the initial position self-detection mode and the previous printing pressure adjustment mode, so that the adjusted first pressure and the second pressure are within the preset pressure range corresponding to the paper information at the time of the next printing.

[0016] Optionally, the detection control unit further includes: a detection sensor for detecting the paper ejection time of the paper after separation by the separation roller group.

[0017] Optionally, the detection control unit is configured to: obtain the average paper ejection time of a single sheet of paper; when the average paper ejection time of a single sheet of paper is not within the preset paper ejection time interval, start an abnormal state pressure adjustment mode, and the abnormal state pressure adjustment mode includes: according to the entered abnormal time interval table, readjusting the first pressure or the second pressure until the average paper ejection time of a single sheet of paper is within the preset paper ejection time interval.

[0018] Optionally, the detection control unit is configured to: after completing the initial position self-test mode, start the intelligent pressure adjustment mode, and the intelligent pressure adjustment mode includes: when the paper information of the paper is not included in the entered paper information table, use the basic first pressure to print the paper; if printing fails, adjust the pressure increase of the basic first pressure a preset number of times, and continue to print the paper after each pressure increase adjustment; if printing is successful after the pressure increase adjustment within the preset number of times, maintain the last adjusted basic first pressure to complete subsequent printing; if printing still fails after the pressure increase adjustment within the preset number of times, stop printing.

[0019] Correspondingly, the technical solution of the present invention further provides an image forming device, comprising any one of the above-mentioned paper feeding devices for conveying paper; and an image forming mechanism for forming an image on the paper.

[0020] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0021] The paper feeding device of the technical solution of the present invention can adjust the pressure of the paper feeding roller and the separation roller group respectively by using the driving component, thereby effectively reducing the manufacturing cost.

[0022] Furthermore, based on the paper information, the detection and control unit can adjust the pressure of the paper feed roller and the separation roller assembly before printing, ensuring that the paper feed roller has good conveying force and the separation roller assembly has good separation performance. This reduces problems such as paper jams, paper feed roller failure, and paper overlap during printing. Furthermore, the pressure of the paper feed roller and the separation roller assembly can be adjusted automatically by the user simply by inputting the corresponding paper information, eliminating the need for complex professional operations and greatly improving the user experience.

[0023] Furthermore, the detection control unit is configured to determine whether the paper information of the paper used in the subsequent printing and the paper information used in the previous printing are within the same preset paper information range; if the paper information of the two printed sheets is within the same preset paper information range, the subsequent printing is performed using the first pressure and the second pressure adjusted for the previous printing; if the paper information of the two printed sheets is not within the same preset paper information range, the first pressure and the second pressure used in the subsequent printing are re-adjusted so that the adjusted first pressure and the second pressure are within the preset pressure range corresponding to the paper information used in the subsequent printing. Performing detection processing before each printing operation can reduce problems such as paper jams, paper feed roller failure, and paper overlap caused by different paper information.

[0024] Furthermore, the detection control unit is configured to, when the average paper ejection time of a single sheet of paper is not within a preset paper ejection time interval, readjust the first pressure or the second pressure until the average paper ejection time of a single sheet of paper is within the preset paper ejection time interval. By detecting the average paper ejection time of a single sheet of paper, ensuring that the paper ejection time is within the preset paper ejection time interval, the final printing effect is improved.

[0025] Furthermore, the detection control unit is configured to: when the paper information for the printing paper has not been entered, print on the paper using a basic first pressure; if printing fails, adjust the basic first pressure a preset number of times with a pressure increase, and continue printing on the paper after each pressure increase adjustment; if printing is successful after the preset number of pressure increase adjustments, maintain the last adjusted basic first pressure for subsequent printing; and if printing still fails after the preset number of pressure increase adjustments, stop printing. Through intelligent automatic print adjustment, printing jobs can be completed when the paper information for the printing paper has not been entered, effectively saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features and advantages of the present invention will be better understood through the following detailed description of the optional embodiments in conjunction with the accompanying drawings, in which the same reference numerals represent the same or similar components, wherein:

[0027] Figure 1 is a schematic structural diagram of a paper feeding device according to an embodiment of the present invention;

[0028] Figure 2 1 is a schematic diagram of a flow chart of an initial position self-check mode in a paper feeding device according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic flow chart of a previous printing pressure adjustment mode in a paper feeding device according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic flow chart of a post-printing pressure adjustment mode in a paper feeding device according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of a flow chart of an automatic paper feeding adjustment mode in a paper feeding device according to an embodiment of the present invention;

[0032] Figure 6 It is a schematic flow chart of an intelligent pressure regulation mode in a paper feeding device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following describes the implementation and use of the embodiments in detail. However, it should be understood that the specific embodiments discussed are merely illustrative of specific ways to implement and use the present invention and are not intended to limit the scope of the present invention. When describing the structural positions of components, such as up, down, top, and bottom, directional references are not absolute but relative. These directional references are appropriate when the components are arranged as shown in the figures, but they will change accordingly if the positions of the components in the figures are changed.

[0034] As described in the background, prior art proposes adding devices to the paper feeding device to adjust the pressure of the paper feed roller and the separation roller. This allows the pressure of the paper feed roller and the separation roller to be adjusted to alleviate problems such as paper jams, paper failure during paper feeding, and paper overlap. However, this technology still has drawbacks in actual application, specifically:

[0035] Problem 1: The pressure regulating devices of the paper feeding roller and the separating roller are driven by independent driving devices respectively, which greatly increases the production cost.

[0036] Question 2: The mechanical structure is relatively complex and requires professionals with professional knowledge to adjust it. Few customers can adjust it by themselves.

[0037] Question 3: Due to cost considerations, existing regulating devices are only adjusted after a problem occurs, and there is no pre-emptive pressure regulation structure.

[0038] To this end, embodiments of the present invention provide a paper feeding device and an image forming device to solve the problems existing in the prior art.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Figure 1 FIG. 1 is a schematic structural diagram of a paper feeding device 100 according to an embodiment of the present invention.

[0041] Please refer to Figure 1 The paper feeding device 100 includes: a paper feeding box 10, a paper feeding roller 20, a separation roller group 30, a conveying belt (not shown), a conveying path 40, a first pressure regulating component 50, a second pressure regulating component 60, a driving component 70 and a detection control unit 80. The paper feeding box 10 is used to store a paper stack 90 consisting of multiple sheets of paper 91; the paper feeding roller 20 is located above the paper feeding box 10 and is used to extract the paper 91 from the top of the paper stack 90; the conveying belt 40 can be driven to rotate by a motor (not shown) to convey the extracted paper 91 to the separation roller group 30, and the separation roller group 30 is used to separate the extracted paper 91; the first pressure regulating component 50 is located above the conveying path 40 and is connected to the paper feeding roller 20, and is used to adjust the first pressure P1 when the paper feeding roller 20 extracts paper; the second pressure regulating component 50 is located above the conveying path 40 and is connected to the paper feeding roller 20, and is used to adjust the first pressure P1 when the paper feeding roller 20 extracts paper; The second pressure regulating component 60 is located below the conveying path 40 and is connected to the separation roller group 30, and is used to adjust the second pressure P2 of the separation roller group 30 during the separation process; the driving component 70 is used to drive the first pressure regulating component 50 and the second pressure regulating component 60 respectively; the detection control unit 80 is configured to: according to the paper information of the paper 91, control the driving component 70 to drive the first pressure regulating component 50 and the second pressure regulating component 60 respectively, so that the first pressure P1 and the second pressure P2 are within the preset pressure range corresponding to the paper information.

[0042] In this embodiment, the first pressure adjustment component 50 includes: an adjustment base 51, which is movably connected to the paper feed roller 20; an adjustment block 52, which can slide back and forth on the adjustment base 51; a connecting rod 53, including a first connecting end A1 and a second connecting end A2 relative to each other, the first connecting end A1 being movably connected to the adjustment block 52; and a first adjustment gear 54, which is movably connected to the second connecting end A2, the first adjustment gear 54 rotates unidirectionally under the drive of the driving component 70, and during the unidirectional rotation of the first adjusting gear 54, the adjustment block 52 is driven by the connecting rod 53 to slide back and forth on the adjustment base 51, and during the reciprocating sliding of the adjustment block 52 from one side opposite to the adjustment base 51 to the other side, the pressure applied by the adjustment base 51 on the paper feed roller 20 gradually increases or decreases.

[0043] In this embodiment, the separation roller set 30 includes a first separation roller 31 located above the conveying path 40 and a second separation roller 32 located below the conveying path 40 . A gap is defined between the first separation roller 31 and the second separation roller 32 .

[0044] In this embodiment, after the paper 91 enters the gap, the second separating roller 32 rotates relative to each other to achieve separation between the paper 91 .

[0045] In this embodiment, the second pressure adjustment component 60 includes: an adjustment handle 61, including a first handle end B1 and a second handle end B2 relative to each other, and the first handle end B1 is movably connected to the second separating roller 32; a tension spring 62, including a first tensioning end C1 and a second tensioning end C2 relative to each other, and the first tensioning end C1 is fixedly connected to the second handle end B2; and a second adjustment gear 63, fixedly connected to the second tensioning end C2, and the second adjustment gear 63 rotates unidirectionally under the drive of the driving component 70, and during the unidirectional rotation of the second adjustment gear 63, the tension spring 62 is driven to reciprocately stretch the adjustment handle 61, and during the reciprocating stretching of the adjustment handle 61 by the tension spring 62, the tension applied by the adjustment handle 61 to the second separating roller 32 gradually increases or decreases.

[0046] In this embodiment, the driving assembly 70 includes: a driving gear 71; and a driving motor 72, which is connected to the driving gear 71 and is used to drive the driving gear 71 to rotate along a first rotation direction or a second rotation direction, the first rotation direction is opposite to the second rotation direction, and when the driving gear 71 rotates along the first rotation direction or the second rotation direction, only one of the first adjusting gear 54 and the second adjusting gear 63 rotates.

[0047] In this embodiment, when the driving gear 71 rotates along the first rotation direction or the second rotation direction, the purpose of only one of the first adjusting gear 54 and the second adjusting gear 63 rotating is: since the pressure adjustment of the paper feeding roller 20 and the separating roller group 30 are not linearly related, the driving component 70 is required to be able to independently drive the first pressure adjusting component 50 or the second pressure adjusting component 60 to meet the pressure requirements of the paper feeding roller 20 and the separating roller group 30.

[0048] In this embodiment, in order to satisfy the requirement that when the driving gear 71 rotates along the first rotation direction or the second rotation direction, only one of the first adjusting gear 54 and the second adjusting gear 63 rotates, the structure adopted is: a first one-way ratchet gear 55 and a transmission gear 56 are added between the driving gear 71 and the first adjusting gear 54, the first one-way ratchet gear 55 is engaged with the first adjusting gear 54, and the transmission gear 56 is respectively engaged with the first one-way ratchet gear 55 and the driving gear 71; a second one-way ratchet gear 64 is added between the second adjusting gear 63 and the driving gear 71, and the second one-way ratchet gear 64 is respectively engaged with the second adjusting gear 63 and the driving gear 71.

[0049] It should be noted that the first one-way ratchet gear 55 and the second one-way ratchet gear 64 are gears that can only rotate in one direction to drive their drive shafts. In this embodiment, the rotation directions of the first one-way ratchet gear 55 and the second one-way ratchet gear 64 need to be the same so that when the drive gear 71 rotates along the first rotation direction or the second rotation direction, only one of the first adjustment gear 54 and the second adjustment gear 63 rotates.

[0050] In this embodiment, the rotation direction of the first one-way ratchet gear 55 and the second one-way ratchet gear 64 is a first rotation direction. When the driving gear 71 rotates along the first rotation direction, the first one-way ratchet gear 55 will drive the first adjusting gear 54 to rotate, and at this time, although the second one-way ratchet gear 64 will rotate along, its center axis remains stationary; when the driving gear 71 rotates along the second rotation direction, the second one-way ratchet gear 64 will drive the second adjusting gear 63 to rotate, and at this time, the center axis of the first one-way ratchet gear 55 remains stationary.

[0051] In other embodiments, to ensure that only one of the first adjustment gear and the second adjustment gear rotates when the driving gear rotates in the first rotational direction or the second rotational direction, the first adjustment gear and the second adjustment gear can be directly equipped with one-way ratchet gears, and the driving gear directly meshes with the first adjustment gear and the second adjustment gear. However, in this case, the rotation directions of the first adjustment gear and the second adjustment gear using the one-way ratchet gears need to be opposite to each other, so that only one of the first adjustment gear and the second adjustment gear rotates when the driving gear rotates in the first rotational direction or the second rotational direction.

[0052] In other embodiments, the number of gears can be arbitrarily configured according to specific needs, as long as it is ultimately achieved that when the driving gear rotates along the first rotation direction or the second rotation direction, only one of the first adjustment gear and the second adjustment gear rotates.

[0053] In this embodiment, the driving assembly 70 can be used to adjust the pressure of the paper feeding roller 20 and the separation roller group 30 respectively, which effectively reduces the manufacturing cost.

[0054] In this embodiment, the detection control unit 80 includes: a first initial position sensor 81 for detecting the initial position of the first adjusting gear 54 ; and a second initial position sensor 82 for detecting the initial position of the second adjusting gear 63 .

[0055] Accordingly, in this embodiment, the detection control unit 80 is configured to start an initial position self-detection mode.

[0056] Figure 2 The following is a flow chart of the initial position self-check mode of the control detection unit in the paper feeding device 100 according to one embodiment of the present invention. Specifically, the initial position self-check mode includes:

[0057] start;

[0058] Step S101: determining whether the first adjusting gear 54 is located at an initial position;

[0059] When it is detected that the first adjusting gear 54 is not in the initial position, step S102 is executed. Step S102 includes: controlling the driving motor 72 to drive the driving gear 71 to rotate along the first rotation direction until it is detected that the first adjusting gear 54 is in the initial position;

[0060] When it is detected that the first adjusting gear 54 is in the initial position, proceed to the next step;

[0061] Step S103: determining whether the second adjusting gear 63 is located at the initial position;

[0062] When it is detected that the second adjustment gear 63 is not in the initial position, step S104 is executed. Step S104 includes: controlling the drive motor 72 to drive the drive gear 71 to rotate along the second rotation direction until it is detected that the second adjustment gear 63 is in the initial position, and then ending;

[0063] When it is detected that the second adjusting gear 63 is at the initial position, the process ends.

[0064] In this embodiment, the first initial position sensor 81 is used to detect whether the first adjusting gear 54 rotates to a specific position. When the first adjusting gear 54 rotates to the specific position, the first pressure P1 of the paper feed roller 20 is fixed and known, and is recorded as the initial first pressure P1'. Subsequent adjustments to the first pressure P1 of the paper feed roller 20 are all adjusted based on the initial first pressure P1'; the second initial position sensor 82 is used to detect whether the second adjusting gear 63 rotates to a specific position. When the second adjusting gear 63 rotates to the specific position, the second pressure P2 of the separation roller group 30 is fixed and known, and is recorded as the initial second pressure P2'. Subsequent adjustments to the second pressure P2 of the separation roller group 30 are all adjusted based on the initial second pressure P2'.

[0065] In this embodiment, the detection control unit 80 further includes: a first rotation counting sensor 83 for recording the number of rotations of the first one-way ratchet gear 55; and a second rotation counting sensor 84 for recording the number of rotations of the second one-way ratchet gear 64.

[0066] Correspondingly, the detection control unit 80 is further configured to start the previous printing pressure adjustment mode after completing the initial position self-detection mode.

[0067] Figure 3 The following is a flow chart of the previous printing pressure adjustment mode of the control detection unit in the paper feeding device 100 according to one embodiment of the present invention. Specifically, the previous printing pressure adjustment mode includes:

[0068] start;

[0069] Step S201: Controlling the drive motor 72 to drive the drive gear 71 to rotate in the first rotation direction according to the paper information table until the recorded number of rotations of the first one-way ratchet gear 55 reaches a first preset number of rotations, so that the first pressure P1 is within a preset pressure range corresponding to the paper information;

[0070] Step S202: According to the paper information table, control the drive motor 72 to drive the drive gear 71 to rotate along the second rotation direction until the recorded number of rotations of the second one-way ratchet gear 64 reaches a second preset number of rotations, so that the second pressure P2 is within the preset pressure range corresponding to the paper information, and end.

[0071] It should be noted that the premise for starting the previous printing pressure adjustment mode is that the entered paper information table contains the paper information of the paper.

[0072] In this embodiment, the paper information table is obtained through extensive experimental verification of the paper feeding device 100 after the hardware design of the paper feeding device 100 is completed. The data in the paper information table includes paper information distributed in a number of different intervals, as well as the number of revolutions required by the first one-way ratchet gear 55 and the second one-way ratchet gear 64 based on the initial first pressure P1' and the initial second pressure P2' for each interval.

[0073] When the first one-way ratchet gear 55 and the second one-way ratchet gear 64 rotate to the number of turns recorded in the paper information table, the detection control unit 80 controls the drive motor 72 to stop. At this time, the first pressure P1 of the paper feed roller 20 and the second pressure P2 of the separation roller group 30 are both within the preset pressure range, which can ensure the smooth passage of the paper 91.

[0074] In this embodiment, the paper information is the paper basis weight, that is, the weight of the paper per square centimeter.

[0075] It should be noted that, before printing, the paper information of the paper needs to be manually input into the detection control unit 80 , and the detection control unit 80 determines whether the paper information of the paper is included in the paper information table.

[0076] In this embodiment, the detection and control unit 80 adjusts the pressure of the paper feed roller 20 and the separation roller assembly 30 based on the paper information before printing. This ensures that the paper feed roller 20 has good conveying force and the separation roller assembly 30 has good separation performance, thereby reducing problems such as paper jams, paper feed roller misfeeding, and paper overlap during printing. Furthermore, the user only needs to input the corresponding paper information to automatically adjust the pressure of the paper feed roller 20 and the separation roller assembly 30, eliminating the need for complex and specialized operations, greatly improving the user experience.

[0077] In this embodiment, the detection control unit 80 is further configured to start the next printing pressure adjustment mode after completing the previous printing pressure adjustment mode.

[0078] Figure 4 The following is a flow chart of a post-printing pressure adjustment mode of a control detection unit in a paper feeding device 100 according to an embodiment of the present invention. Specifically, the post-printing pressure adjustment mode includes:

[0079] start;

[0080] Step S301: determining whether the paper information of the paper 91 during the subsequent printing and the paper information of the paper 91 during the previous printing are within the same preset paper information interval;

[0081] If the paper information of the two prints is not within the same preset paper information range, executing step S302, which includes: restarting the initial position self-check mode and the previous print pressure adjustment mode so that the adjusted first pressure P1 and second pressure P2 are within the preset pressure range corresponding to the paper information of the subsequent print, and ending;

[0082] If the paper information of the two prints is in the same preset paper information interval, step S303 is executed. Step S303 includes: performing the subsequent printing with the first pressure P1 and the second pressure P2 adjusted during the previous printing, and ending.

[0083] In this embodiment, the previous printing may be understood as printing on the existing paper stack 90 in the paper feeding box 10 ; and the subsequent printing may be understood as printing on the replaced paper stack 90 after the existing paper stack 90 is printed.

[0084] It should be noted that the paper information of the subsequent printing still needs to be manually input into the detection control unit 80, and the detection control unit 80 determines whether the paper information of the subsequent printing is consistent with the paper information of the previous printing.

[0085] In this embodiment, detection processing is performed before each printing to reduce problems such as paper jams, paper failure when the paper feed roller feeds paper, and paper overlap caused by different paper information.

[0086] In this embodiment, the detection control unit 80 further includes a detection sensor 85 for detecting the paper ejection time of the paper 91 after separation by the separation roller set 30 .

[0087] Correspondingly, the detection control unit is further configured to start an automatic paper feeding adjustment mode.

[0088] Figure 5 The following is a flow chart of the automatic paper feeding adjustment mode of the control detection unit in the paper feeding device 100 according to an embodiment of the present invention. Specifically, the automatic paper feeding adjustment mode includes:

[0089] start;

[0090] Step S401: obtaining the paper ejection time of a single paper;

[0091] Step S402: determining whether the paper ejection time of a single paper sheet is within a preset paper ejection time interval;

[0092] When the paper ejection time of the single sheet of paper is not within the preset paper ejection time interval, step S403 is executed. Step 403 includes: starting an abnormal state pressure adjustment mode. The abnormal state pressure adjustment mode includes: readjusting the first pressure P1 or the second pressure P2 according to the recorded abnormal time interval table until the paper ejection time of the single sheet of paper is within the preset paper ejection time interval, and then ending;

[0093] When the paper ejection time of a single paper is within the preset paper ejection time interval, step S404 is executed. Step 404 includes: printing with the first pressure P1 and the second pressure P2 that have been adjusted currently, and ending.

[0094] In this embodiment, in order to improve the accuracy of obtaining the paper ejection time of a single sheet of paper, the detection control unit 80 is configured to: obtain the total paper ejection time of multiple consecutive sheets of paper after separation and processing by the separation roller group 30, and the number of multiple sheets of paper is greater than the preset paper ejection number; and use the ratio of the total paper ejection time to the number of multiple sheets of paper as the paper ejection time of a single sheet of paper.

[0095] In this embodiment, the preset paper ejection time interval is manually set, and is based on a single paper ejection time that is considered to have the best printing effect after a large number of paper feeding experiments.

[0096] In this embodiment, the abnormal time interval table also requires extensive experimental verification of the paper feeding device 100 to obtain. The data in the abnormal time interval table includes: paper information distributed in several different intervals, the time difference intervals between the paper ejection times of several differently distributed single sheets of paper and the preset paper ejection time intervals, and the number of revolutions of the first one-way ratchet gear 55 and the second one-way ratchet gear 64 under the corresponding time difference intervals, based on the initial first pressure P1' and the initial second pressure P2'. When the first one-way ratchet gear 55 and the second one-way ratchet gear 64 rotate to the number of revolutions recorded in the abnormal time interval table, the detection control unit 80 controls the drive motor 72 to stop. At this time, the first pressure P1 of the paper feeding roller 20 and the second pressure P2 of the separation roller group 30 are both within the preset pressure range, ensuring that the paper ejection time interval of a single sheet of paper during passage is within the preset paper ejection time interval.

[0097] In this embodiment, the paper ejection time of a single sheet of paper is detected to ensure that the paper ejection time is within the preset paper ejection time interval, thereby improving the final printing effect.

[0098] In this embodiment, the detection control unit 80 is further configured to start the intelligent pressure adjustment mode after completing the initial position self-detection mode.

[0099] Figure 6 The following is a flow chart of the intelligent pressure adjustment mode of the control detection unit in the paper feeding device 100 according to an embodiment of the present invention. Specifically, the intelligent pressure adjustment mode includes:

[0100] start;

[0101] Step S501: determining whether the entered paper information table contains the paper information of the paper 91;

[0102] When the entered paper information table does not contain the paper information of the paper, step S502 is executed. Step S502 includes: using the basic first pressure P1 b Printing on the paper 91;

[0103] When the entered paper information table contains the paper information of the paper 91, step S503 is executed, which includes: restarting the initial position self-check mode and the previous printing pressure adjustment mode so that the adjusted first pressure P1 and second pressure P2 are within the preset pressure range corresponding to the paper information during the next printing;

[0104] Step S504: Determine whether to use the basic first pressure P1 b Whether printing on the paper 91 is successful;

[0105] If printing fails, then execute step S505, which includes: b Performing a preset number N of pressure increase adjustments, and continuing to print on the paper 91 after each pressure increase adjustment;

[0106] If the printing is successful, then step S506 is executed, which includes: using the first basic pressure P1 b Complete subsequent printing and end;

[0107] Step S507: Determine whether the number of adjustments exceeds a preset number N;

[0108] If the printing is successful after the pressure increase adjustment within the preset number N, then step S508 is executed, which includes: maintaining the last adjusted basic first pressure P1 b Complete subsequent printing;

[0109] If printing still fails after the pressure increase is adjusted within the preset number N, step S509 is executed. Step S509 includes: stopping printing and ending.

[0110] In this embodiment, intelligent automatic printing adjustment is performed to complete the printing job when the paper information of the printing paper has not been entered, thereby effectively saving manpower.

[0111] Correspondingly, an embodiment of the present invention further provides an image forming device (not shown), comprising the above-mentioned paper feeding device 100 for conveying paper; and an image forming mechanism for forming an image on the paper.

[0112] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A paper feeding device, characterized in that: include: A paper feed box, used for storing a stack of multiple sheets of paper; a paper feed roller for extracting the paper from the top of the paper stack; A conveying belt, used for conveying the extracted paper; A separation roller group, used for separating the extracted paper; a first pressure regulating assembly connected to the paper feeding roller, for regulating a first pressure when the paper feeding roller takes paper; a second pressure regulating assembly connected to the separation roller group, for regulating a second pressure of the separation roller group during separation processing; a driving assembly, configured to drive the first pressure regulating assembly and the second pressure regulating assembly respectively; as well as A detection control unit, wherein the detection control unit is configured to: According to the paper information of the paper, the driving component is controlled to drive the first pressure regulating component and the second pressure regulating component respectively, so that the first pressure and the second pressure are within a preset pressure range corresponding to the paper information; wherein The first pressure adjustment assembly includes: an adjustment base movably connected to the paper feed roller; an adjustment block capable of reciprocatingly sliding on the adjustment base; a connecting rod including a first connecting end and a second connecting end opposite to each other, the first connecting end being movably connected to the adjustment block; a first adjusting gear movably connected to the second connecting end, the first adjusting gear being driven by the driving assembly to rotate unidirectionally, and during the unidirectional rotation of the first adjusting gear, the adjustment block is driven by the connecting rod to slide reciprocally on the adjustment base, and during the reciprocating sliding of the adjustment block from one side to the other side opposite to the adjustment base, the pressure applied by the adjustment base on the paper feed roller gradually increases or decreases; a first one-way ratchet gear meshing with the first adjusting gear; and a transmission gear meshing with the first one-way ratchet gear; The separation roller group includes: a first separation roller located above the conveying path; and a second separation roller located below the conveying path; The second pressure adjustment assembly includes: an adjustment handle, including a first handle end and a second handle end opposite to each other, the first handle end being movably connected to the second separating roller; a tension spring, including a first tension end and a second tension end opposite to each other, the first tension end being fixedly connected to the second handle end; and a second adjustment gear fixedly connected to the second tension end, the second adjustment gear being driven by the drive assembly to rotate unidirectionally, and during the unidirectional rotation of the second adjustment gear, the tension spring is driven to reciprocately stretch the adjustment handle, and during the reciprocating stretching of the adjustment handle by the tension spring, the tension applied by the adjustment handle to the second separating roller gradually increases or decreases; The paper feeding device further includes: a second one-way ratchet gear engaged with the second adjusting gear; The driving assembly includes: a driving gear, which is respectively engaged with the transmission gear and the second one-way ratchet gear; and a driving motor, which is connected to the driving gear and is used to drive the driving gear to rotate along a first rotation direction or a second rotation direction, the first rotation direction is opposite to the second rotation direction, and when the driving gear rotates along the first rotation direction or the second rotation direction, only one of the first adjustment gear and the second adjustment gear rotates.

2. The paper feeding device according to claim 1, wherein: The detection control unit includes: a first initial position sensor, configured to detect an initial position of the first adjusting gear; a first rotation counting sensor, configured to record the number of rotations of the first one-way ratchet gear; a second initial position sensor, configured to detect an initial position of the second adjusting gear; and The second rotation counting sensor is used to record the number of rotations of the second one-way ratchet gear.

3. The paper feeding device according to claim 2, wherein: The detection control unit is configured to: Start the initial position self-check mode, which includes: When it is detected that the first adjusting gear is not in the initial position, controlling the driving motor to drive the driving gear to rotate along the first rotation direction until it is detected that the first adjusting gear is in the initial position; and When it is detected that the second adjusting gear is not in the initial position, the driving motor is controlled to drive the driving gear to rotate along the second rotation direction until it is detected that the second adjusting gear is in the initial position.

4. The paper feeding device according to claim 3, wherein: The detection control unit is configured to: After completing the initial position self-test mode, starting the previous printing pressure adjustment mode, the previous printing pressure adjustment mode includes: When the recorded paper information table contains paper information of the paper, controlling the drive motor to drive the drive gear to rotate in the first rotation direction according to the paper information table until the recorded number of rotations of the first one-way ratchet gear reaches a first preset number of rotations, so that the first pressure is within a preset pressure range corresponding to the paper information; and According to the paper information table, the drive motor is controlled to drive the drive gear to rotate along the second rotation direction until the recorded number of rotations of the second one-way ratchet gear reaches a second preset number of rotations, so that the second pressure is within the preset pressure range corresponding to the paper information.

5. The paper feeding device according to claim 4, wherein: The detection control unit is configured to: After the previous printing pressure adjustment mode is completed, the next printing pressure adjustment mode is started, and the next printing pressure adjustment mode includes: Determining whether the paper information of the paper during the subsequent printing and the paper information of the paper during the previous printing are within the same preset paper information interval; If the paper information of two prints is within the same preset paper information interval, performing the subsequent print with the first pressure and the second pressure adjusted during the previous print; If the paper information of the two prints is not located in the same preset paper information interval, the initial position self-check mode and the previous printing pressure adjustment mode are restarted so that the adjusted first pressure and the second pressure are within the preset pressure range corresponding to the paper information during the subsequent printing.

6. The paper feeding device according to any one of claims 1 to 5, characterized in that: The detection control unit also includes: The detection sensor is used to detect the paper ejection time of the paper after being separated by the separation roller group.

7. The paper feeding device according to claim 6, wherein: The detection control unit is configured to: Get the average paper ejection time of a single sheet of paper; When the average paper ejection time of a single paper is not within the preset paper ejection time interval, an abnormal state pressure adjustment mode is activated, and the abnormal state pressure adjustment mode includes: According to the recorded abnormal time interval table, the first pressure or the second pressure is readjusted until the average paper ejection time of a single sheet of paper is within the preset paper ejection time interval.

8. The paper feeding device according to claim 3, wherein: The detection control unit is configured to: After completing the initial position self-test mode, the intelligent pressure regulation mode is started, and the intelligent pressure regulation mode includes: When the entered paper information table does not contain the paper information of the paper, printing on the paper is performed using a basic first pressure; If printing fails, adjusting the pressure increment of the basic first pressure a preset number of times, and continuing printing on the paper after each pressure increment adjustment; If printing is successful after adjusting the pressure increase within the preset number of times, the last adjusted basic first pressure is maintained to complete subsequent printing; If printing fails after adjusting the pressure increase within the preset number of times, printing will stop.

9. An image forming apparatus, characterized in that: include The paper feeding device according to any one of claims 1 to 8, used for conveying paper; and The image forming mechanism is used for forming an image on the paper.

Images