Paper feeding mechanism and image forming apparatus

Abstract

The present application relates to a paper feeding mechanism and an image forming apparatus, the paper feeding mechanism comprising: a housing having a paper feeding channel; the paper separating wheel is arranged on the paper feeding channel; the paper feeding wheel set is movably arranged in the paper feeding channel and spaced from the paper separating wheel, the paper feeding wheel set comprises a driven wheel, the driven wheel comprises a rotating shaft, a rotating wheel and an elastic piece, the rotating wheel is connected to the outer side of the rotating shaft in a sleeving mode and rotationally connected with the shell through the rotating shaft, and the elastic piece is arranged between the rotating shaft and the shell; and the detection assembly is arranged on the shell and corresponds to the paper feeding wheel set, and the detection assembly is configured to be used for obtaining the operation condition of the driven wheel. According to the technical scheme, the technical problems that a traditional paper feeding mechanism cannot monitor the paper jam problem in time and is inaccurate, paper and devices are prone to being damaged, and the use cost is high are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic paper feeding, and in particular to a paper feeding mechanism and an image forming device. BACKGROUND

[0002] In an image forming device such as a copier or a scanner, a paper feeding mechanism is generally configured to automatically feed paper into the device to realize functions such as copying or scanning. In a conventional paper feeding mechanism, a paper feeding channel is generally provided with a paper taking wheel, a paper separating wheel, and a paper feeding wheel in sequence. The paper taking wheel pushes the paper in a paper tray in the direction of the paper separating wheel by friction generated when the paper taking wheel rotates, the paper separating wheel separates the paper fed by the paper taking wheel into single sheets, and the paper feeding wheel feeds the single sheets out of the paper feeding mechanism.

[0003] In the related art, a detection sensor is generally arranged behind the paper feeding wheel to detect whether the single sheets are fed out smoothly. If no paper is detected to pass through the detection sensor within a period of time, it indicates that the image forming device has a paper jam problem. In this case, the operator needs to be reminded to maintain the image forming device. This causes a problem that the paper feeding mechanism cannot be monitored in time at least in the section from the paper separating wheel to the paper feeding wheel, and the paper jam can only be detected after a period of time, which can easily cause damage to the paper and the image forming device and increase the use cost. SUMMARY

[0004] The present application provides a paper feeding mechanism and an image forming device to solve the technical problem that the conventional paper feeding mechanism cannot monitor the paper jam in time and accurately, which can easily damage the paper and the device and increase the use cost.

[0005] To this end, in a first aspect, the present application provides a paper feeding mechanism, which comprises: a housing having a paper feeding channel; a paper separating wheel arranged in the paper feeding channel; a paper feeding wheel set movably arranged in the paper feeding channel and spaced apart from the paper separating wheel, the paper feeding wheel set comprising a driven wheel, the driven wheel comprising a rotating shaft, a rotating wheel, and an elastic member, the rotating wheel being sleeved on the outside of the rotating shaft and being rotatably connected to the housing via the rotating shaft, and the elastic member being arranged between the rotating shaft and the housing; and a detection assembly arranged in the housing and corresponding to the paper feeding wheel set, the detection assembly being configured to acquire the operation condition of the driven wheel.

[0006] In a possible implementation, the motion trajectory of the rotating wheel comprises a first trajectory formed by rotation around the rotating shaft and a second trajectory formed by the elastic force of the elastic member, the first trajectory is arc-shaped, and the second trajectory is straight-line-shaped.

[0007] In a possible implementation, the detection assembly comprises a first connecting member, a first detection member, and a magnet, the magnet is arranged on the driven wheel and moves synchronously with the driven wheel, the first detection member is a Hall sensor, and the first detection member is connected to the housing via the first connecting member and is signal-connected to the magnet.

[0008] In a possible implementation, the first connecting member is provided with a first avoiding window, the first avoiding window is arranged towards the paper feeding wheel set, and the sensing end of the first detecting member is located in the first avoiding window.

[0009] In a possible implementation, the paper feeding wheel set further comprises a driving wheel, the driving wheel is arranged opposite to the driven wheel with a gap, and the gap between the driving wheel and the driven wheel constitutes part of the paper feeding channel.

[0010] In a possible implementation, the housing comprises an upper shell and a lower shell, the lower shell is arranged opposite to the upper shell and below the upper shell, the paper feeding channel is located between the upper shell and the lower shell, the driving wheel is arranged on the lower shell, and the driven wheel and the detecting assembly are arranged on the upper shell.

[0011] In a possible implementation, the detecting assembly comprises a second connecting member, a second detecting member and a mark, the mark is arranged on the surface of the paper feeding wheel set, the second detecting member is connected to the housing through the second connecting member and is configured to acquire the mark.

[0012] In a possible implementation, the second connecting member is provided with a second avoiding window, the second avoiding window is arranged towards the paper feeding wheel set, and the detecting end of the second detecting member is arranged towards the second avoiding window.

[0013] In a possible implementation, a plurality of paper feeding wheel sets are arranged, the plurality of paper feeding wheel sets are distributed along the paper feeding direction with intervals, and a plurality of detecting assemblies are arranged, one detecting assembly is arranged corresponding to one paper feeding wheel set.

[0014] In a second aspect, the embodiments of the present application further provide an image forming device, comprising a device body and a paper feeding mechanism as described above, the paper feeding mechanism is arranged in the device body.

[0015] According to the paper feeding mechanism and the image forming device provided by the embodiment of the present application, the paper feeding mechanism comprises a housing having a paper feeding channel, a paper separating wheel arranged in the paper feeding channel, a paper feeding wheel set movably arranged in the paper feeding channel and spaced apart from the paper separating wheel, the paper feeding wheel set comprising a driven wheel, the driven wheel comprising a rotating shaft, a rotating wheel and an elastic member, the rotating wheel being sleeved outside the rotating shaft and being rotatably connected with the housing through the rotating shaft, and the elastic member being arranged between the rotating shaft and the housing, and a detection assembly arranged in the housing and corresponding to the paper feeding wheel set, the detection assembly being configured to obtain the operation condition of the driven wheel. The technical solution of the present application adds the detection assembly between the paper separating wheel and the paper feeding wheel set, so as to monitor the operation condition of the paper feeding wheel set through the detection assembly to obtain the conveying wrinkle condition of the paper in the paper feeding channel. When the paper is wrinkled, the paper feeding wheel set operates abnormally, the detection assembly triggers an alarm, such as stopping paper feeding, triggering a siren or a red light, etc., to remind the operator to repair in time. The situation that the paper cannot be output due to wrinkles and is accumulated at this position while the subsequent paper is continuously and invalidly fed is effectively avoided, the paper damage and waste are reduced, and the protection of the image forming device is improved. Compared with the monitoring mode of the conventional paper feeding mechanism which needs to wait for a period of time to determine whether the paper is wrinkled at the paper feeding wheel, the paper feeding mechanism provided by the embodiment of the present application can quickly respond when the paper is wrinkled, timely monitor the paper wrinkles, the monitoring data is accurate and reliable, the damage of the paper can be effectively reduced, the service life of the paper feeding mechanism is prolonged, and the use cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated by reference in the specification and forming a part of the specification illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, those skilled in the art can obtain other drawings from these drawings without creative labor. One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings, which do not constitute a limitation on the embodiments. The elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings do not constitute a proportion limit.

[0017] Figure 1 A partial structure schematic view of the paper feeding mechanism provided by the embodiment of the present application;

[0018] Figure 2 Another partial view of the paper feeding mechanism provided by the embodiment of the present application;

[0019] Figure 3 A partial three-dimensional structure schematic view of the paper feeding mechanism provided by the embodiment of the present application;

[0020] Figure 4 is a sectional view of the paper feeding mechanism according to the embodiment of the present application; Figure 3

[0021] Figure 5 is a side view of the paper feeding mechanism according to the embodiment of the present application; Figure 4

[0022] Figure 6 is a partial side sectional view of the paper feeding mechanism according to another embodiment of the present application;

[0023] Figure 7 is a sectional view of the paper feeding mechanism according to another embodiment of the present application.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 100, housing; 101, paper feeding passage; 110, upper housing; 120, lower housing;

[0026] 200, paper separating wheel;

[0027] 300, paper feeding wheel set; 310, driving wheel; 320, driven wheel; 321, rotating shaft; 322, rotating wheel; 323, elastic member;

[0028] 400, detection assembly; 410, first connecting member; 411, first avoiding window; 420, first detection member; 430, magnet; 440, second connecting member; 441, second avoiding window; 450, second detection member; 460, mark. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and it does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but a person of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0031] ​​For ease of description, spatial relative terms can be used herein to describe the positional relationship or movement of one element or feature relative to another element or feature as shown in the drawings, such as "inner", "outer", "inside", "outside", "below", "under", "above", "on", "front", "back", and the like. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or reversed, or the orientation of the device is changed, the directional indications are also changed accordingly, for example, an element described as "below" or "under" another element or feature will be subsequently oriented "above" or "above" the other element or feature. Therefore, the example term "under" can include both upward and downward positions. The device can be additionally oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are interpreted accordingly.

[0032] Referring to Figures 1 to 6 The embodiment of the present application provides a paper feeding mechanism, which comprises a shell 100, a paper feeding channel 101, a paper separating wheel 200 arranged in the paper feeding channel 101, a paper feeding wheel set 300 movably arranged in the paper feeding channel 101 and spaced from the paper separating wheel 200, the paper feeding wheel set 300 comprising a driven wheel 320, the driven wheel 320 comprising a rotating shaft 321, a rotating wheel 322 and an elastic member 323, the rotating wheel 322 being sleeved outside the rotating shaft 321 and being rotationally connected with the shell 100 through the rotating shaft 321, and the elastic member 323 being arranged between the rotating shaft 321 and the shell 100, and a detection assembly 400 arranged in the shell 100 and corresponding to the paper feeding wheel set 300, the detection assembly 400 being configured to acquire the operation condition of the driven wheel 320.

[0033] In traditional paper feeding mechanisms, the paper feeding channel 101 between the paper separating roller 200 and the paper feeding roller assembly 300 has a relatively high paper feeding working space. However, the gap distance of the paper feeding channel 101 at the paper separating roller assembly 200 is small. In the paper feeding direction, the paper enters from a higher conveying environment to a lower conveying environment, which easily leads to wrinkles or paper jams. Based on this, the paper feeding mechanism provided in this embodiment adds a detection component 400 between the paper separating roller 200 and the paper feeding roller assembly 300 to monitor the operation of the paper feeding roller assembly 300 and obtain the paper wrinkling situation in that section of the paper feeding channel 101. When the paper wrinkles, the paper feeding roller assembly 300 operates abnormally, and the detection component 400 triggers an alarm, such as stopping paper feeding, triggering a horn, or flashing a red light, to remind the operator to perform timely maintenance. This effectively avoids the situation where paper wrinkles cannot be output and accumulate at that point, while subsequent paper continues to be fed ineffectively, reducing paper damage and waste, and improving the protection of the image forming apparatus. Compared to traditional paper feeding mechanisms that require a waiting period before determining whether paper has wrinkled at the paper feed rollers, the paper feeding mechanism provided in this application can respond quickly when paper wrinkles occur, promptly monitor paper wrinkles, and provide highly accurate and reliable monitoring data. This effectively reduces paper damage, extends the service life of the paper feeding mechanism, and lowers operating costs.

[0034] Specifically, the paper feeding mechanism is configured as a combination of at least a housing 100, a paper separating roller 200, a paper feeding roller assembly 300, and a detection component 400. The housing 100 includes at least an upper housing 110 arranged vertically and a lower housing 120 located below the upper housing 110, forming a paper feeding channel 101 between the upper housing 110 and the lower housing 120. The paper separating roller 200 can be a roller structure that can rotate around its axial direction, such as a flexible rubber roller or a hard plastic roller with a brush on its outer side. It is rotatably mounted on the upper housing 110 and can be driven by a motor. A friction wheel is provided below the paper separating roller 200, which works in conjunction with the paper separating roller 200 to achieve the one-to-one separation of multiple sheets of paper. The paper feeding roller assembly 300 can be a roller structure, such as a flexible rubber roller or a hard plastic roller with a brush on its outer side. It is rotatably mounted within the paper feeding channel 101. The paper feeding roller assembly 300 can deliver the separated paper to a designated position. The detection component 400 can be a sensor component that can trigger an alarm and / or stop paper feeding when paper wrinkles occur, based on the detected changes in the movement of the paper feed roller assembly 300, to remind operators to perform maintenance. This enables timely monitoring of paper feeding wrinkles, with a short response time and high monitoring accuracy, thus enhancing the protection of paper and the paper feeding mechanism.

[0035] Further, the paper feeding wheel set 300 comprises a driven wheel 320, which can be a roller structure member rotatable around its axis, such as a flexible rubber wheel, or a hard plastic wheel with a brush outside, etc. Meanwhile, the driven wheel 320 is configured as a combined member comprising at least a rotating shaft 321 and a rotating wheel 322. The rotating shaft 321 is a long shaft member, and both ends of the rotating shaft 321 are fixedly inserted into the shell 100. The rotating wheel 322 is a roller structure with a certain length, which is movably sleeved on the middle position of the rotating shaft 321 and is rotatable around the axis of the rotating shaft 321. The elastic member 323 can be a spring, which is used to provide the driven wheel 320 with an elastic buffer space in the radial direction of the rotating shaft 321 upward, so as to lift the driven wheel 320 upward within a certain distance range when paper jam occurs, avoid the paper feeding wheel set 300 from being stuck, reduce the workload of subsequent maintenance, and reduce the damage degree of the paper feeding wheel set 300. Meanwhile, the elastic member 323 can provide the driven wheel 320 with an elastic force against the driving wheel 310 when the paper feeding wheel set 300 is normally operating, so that the driven wheel 320 can be driven to rotate by the driving wheel 310, so as to scan the paper with a relatively thick thickness, and improve the paper feeding smoothness and efficiency at the paper feeding wheel set 300. One end of the elastic member 323 can be inserted into the sleeve structure of the shell 100, and the other end can be sleeved and clamped on the cross-shaped clamping structure on the rotating shaft 321, so as to improve the connection fastening of the elastic member 323 with the rotating shaft 321 and the shell 100, and improve the connection reliability of the driven wheel 320 with the shell 100. In the example, the movement of the rotating wheel 322 can be detected by the detection assembly 400 to determine whether there is a paper jam problem, the transmission response sensitivity of the driven wheel 320 to the driving wheel 310 is higher, and the paper feeding effect is better.

[0036] Of course, in other embodiments, the rotating wheel 322 can be fixedly sleeved on the middle position of the rotating shaft 321, so as to reserve assembly connection positions at both ends of the rotating shaft 321, and be rotatably connected to the reserved rotating hole of the shell 100 through the assembly connection positions. The structure stability of the driven wheel 320 provided in the example is stronger, and the monitoring error of the paper jam problem is smaller.

[0037] In one possible implementation, the motion trajectory of the roller 322 includes a first trajectory formed by rotating around the shaft 321 and a second trajectory formed under the elastic force of the elastic element 323. The first trajectory is arc-shaped, and the second trajectory is straight. The roller 322 of the paper feeding roller assembly 300 provided in this embodiment has at least two motion modes during normal paper feeding: first, it rotates in an arc-shaped motion driven by the shaft 321, thus obtaining the first trajectory; second, it moves back and forth in a straight line under the elastic force of the elastic element 323, thus obtaining the second trajectory. The arc-shaped motion can be performed independently, in which case the elastic element 323 does not function, and the paper feeding roller assembly 300 is a conventional design; while the straight-line motion needs to be performed synchronously with the arc-shaped motion, in which case the shaft 321 and the elastic element 323 act simultaneously, resulting in complex forces on the paper feeding roller assembly 300. When a paper jam occurs in the paper feed roller assembly 300, the arc-shaped movement of the roller 322 is stopped, and the linear movement cannot be reversed, causing the roller 322 to be stuck in a fixed position and unable to continue moving. In this way, the paper feeding status of the paper feed roller assembly 300 can be monitored by monitoring the movement trajectory of the roller 322.

[0038] like Figure 1 and Figure 5 As shown, in one possible implementation, the detection component 400 includes a first connector 410, a first detection component 420, and a magnet 430. The magnet 430 is disposed on the driven wheel 320 and moves synchronously with the driven wheel 320. The first detection component 420 is connected to the housing 100 through the first connector 410 and is signal-connected to the magnet 430.

[0039] The embodiment provides a detection assembly 400 of a Hall sensing element. Specifically, the detection assembly 400 is configured as a combined member including at least a first connecting piece 410, a first detection piece 420 and a magnet 430. The first connecting piece 410 can be a plastic member in a shape of a near triangle, can be hooked on the shell 100 through a hook portion provided thereon, or can be detachably connected to the shell 100 through a connecting lug provided thereon and assisted by a fastener such as a screw or a bolt. The first connecting piece 410 has an accommodation space in the interior to provide an accommodation and fixing space for the first detection piece 420. The magnet 430 can be embedded between the rotating shaft 321 and the rotating wheel 322 of the driven wheel 320. For example, the magnet 430 can be divided into a plurality of fan-shaped magnetic blocks, the plurality of fan-shaped magnetic blocks are spliced on the outer periphery of the rotating shaft 321, and the rotating wheel 322 is sleeved on the outer side of the magnet 430. In this way, the magnet 430 can rotate synchronously with the driven wheel 320, provide a changing magnetic field for the first detection piece 420, so as to detect the real-time position of the driven wheel 320, improve the detection sensitivity and accuracy of the detection assembly 400, and provide mechanical protection for the magnet 430 through the rotating wheel 322 arranged on the outer side, reduce the magnetic interference of dust particles and the like on the magnet 430, and further improve the detection sensitivity. The detection assembly 400 provided in the example has high detection sensitivity, high accuracy of detection results, and strong reliability of monitoring data for the paper jam problem.

[0040] As shown in Figure 3 and Figure 4 In a possible implementation, the first connecting piece 410 is provided with a first avoiding window 411, the first avoiding window 411 is arranged towards the paper feeding wheel set 300, and the sensing end of the first detection piece 420 is located in the first avoiding window 411. In this way, the interference of the first connecting piece 410 on the signal transmission between the first detection piece 420 and the magnet 430 can be reduced, the accuracy and stability of the detection result of the first detection piece 420 can be improved, and the reliability of the monitoring result of the detection assembly 400 can be improved. In addition, the total weight of the first connecting piece 410 can be reduced, and the lightweight layout of the paper feeding mechanism can be realized. However, in other implementations, the first avoiding window 411 can be selectively arranged or not arranged according to the properties of the first detection piece 420.

[0041] In a possible implementation, the first detection member 420 is a Hall sensor. It can be composed of a thin piece of rectangular p-type semiconductor material, such as gallium arsenide (GaAs), indium antimonide (InSb), or indium arsenide (InAs), etc. The first detection member 420 itself passes a continuous current. When the Hall sensor is placed in a magnetic field, the magnetic flux lines exert a force on the semiconductor material, causing the electrons and holes (charge carriers) to move to the sides of the semiconductor sheet. This movement of charge carriers is due to the magnetic force experienced by them as they pass through the semiconductor material. As the electrons and holes move to the sides, a potential difference is generated on both sides of the semiconductor material due to the accumulation of charge carriers. Then, the electrons are affected by the external magnetic field perpendicular to them as they pass through the semiconductor material. The effect of generating a measurable voltage by the magnetic field is more obvious in the planar rectangular material. Therefore, in the implementation of the first detection member 420 as a Hall sensor, the magnetic field induction is mainly used, and the first avoidance window 411 can be selectively not provided.

[0042] As shown in FIG. 4, Figures 1 to 6 In a possible implementation, the paper feeding wheel set 300 further includes a driving wheel 310, which is opposite to the driven wheel 320 and is arranged with a gap. The gap between the driving wheel 310 and the driven wheel 320 constitutes part of the paper feeding channel 101.

[0043] In this embodiment, the paper feeding wheel set 300 is configured to include at least a combination of the driving wheel 310 and the driven wheel 320. The driving wheel 310 can be a roller structure that can rotate around its axis, such as a flexible rubber wheel or a hard plastic wheel with a brush on the outside, which is rotatably arranged and can be driven by a motor / cylinder, etc. The driven wheel 320 is arranged with a gap for the paper to pass through between the driving wheel 310 and the driven wheel 320. The driven wheel 320 can be driven to rotate synchronously by the driving wheel 310 and the rotation direction is opposite to that of the driving wheel 310. In this way, the upper end surface of the paper contacts the driven wheel 320 and can be fed forward under the driving of the rotational friction of the driven wheel 320, and the lower end surface of the paper contacts the driving wheel 310 and can be fed forward under the driving of the rotational friction of the driving wheel 310. Therefore, the paper can be smoothly fed forward along the gap between the two, and the paper feeding is smooth and efficient. At the same time, the movement of the driven wheel 320, such as whether it rotates, the rotation speed, or whether the rotation speed is uniform, etc. is monitored by the detection assembly 400 to determine whether the paper feeding wheel set 300 is operating normally and whether the paper feeding mechanism has a paper jam problem. The paper feeding mechanism provided in this example has higher accuracy in monitoring the paper jam problem and the monitoring result is more reliable.

[0044] Since the driven wheel 320 is a passive component, when the paper is wrinkled at the paper feeding wheel set 300 or before and after the paper feeding wheel, the paper will accumulate at the location, at this time, the driven wheel 320 cannot follow the driving wheel 310 to rotate reversely synchronously, and the detection assembly 400 can determine whether the paper feeding wrinkle problem occurs according to the rotation of the driven wheel 320. For example, if the paper wrinkle is not serious, at this time, the driven wheel 320 can be intermittently driven to rotate by the driving wheel 310, the rotation speed is slow, or the overall rotation speed is fast but not uniform; if the paper wrinkle is serious, at this time, the driven wheel 320 cannot be driven by the driving wheel 310 any more and stops rotating. Based on this, whether the paper jam is serious can be judged by detecting whether the driven wheel 320 rotates, whether the paper jam occurs can be judged by detecting whether the driven wheel 320 rotates, the rotation speed or the rotation uniformity. Preferably, in the embodiment, when the driven wheel 320 further comprises the elastic member 323, the rotating wheel 322 moves up and down relative to the shell 100 through the elastic member 323, at this time, the detection assembly 400 is preferably used to detect whether the rotating wheel 322 rotates, that is, whether the rotating wheel 322 stops rotating or rotates.

[0045] As shown in Figures 1 to 6 In a possible implementation, the shell 100 comprises an upper shell 110 and a lower shell 120, the lower shell 120 is oppositely arranged with the upper shell 110 and is located below the upper shell 110; the paper feeding channel 101 is located between the upper shell 110 and the lower shell 120, the driving wheel 310 is arranged in the lower shell 120, and the driven wheel 320 and the detection assembly 400 are arranged in the upper shell 110.

[0046] In the embodiment, the specific configuration of the shell 100 is optimized. Specifically, the shell 100 is configured as a combined component comprising at least the upper shell 110 and the lower shell 120, the upper shell 110 can be a plastic member, which is used to provide mounting space and support force for the paper taking wheel, the paper separating wheel 200, the driven wheel 320 and the detection assembly 400, etc.; the lower shell 120 can be a plastic member, which is arranged in the lower part of the upper shell 110 in a spaced manner, and is used to provide mounting position and support force for the paper feeding box, the friction wheel and the driving wheel 310, etc. The paper feeding mechanism provided in the example is in an upper and lower split type, which is convenient for subsequent maintenance.

[0047] As shown in Figure 6 In a possible implementation, the detection assembly 400 comprises a second connecting member 440, a second detection member 450 and a mark 460, the mark 460 is arranged on the surface of the paper feeding wheel set 300, the second detection member 450 is connected with the shell 100 through the second connecting member 440 and is configured to acquire the mark 460.

[0048] The embodiment provides a detection assembly 400 of an optical track sensor (OTS for short, for example, optical mouse sensing). Specifically, the detection assembly 400 is configured as a combined member including at least a second connecting piece 440, a second detection piece 450 and a mark 460. The second connecting piece 440 can be a plastic member in the shape of a near-cube, can be hooked on the shell 100 through a hook portion provided thereon, or can be detachably connected to the shell 100 through a connecting lug provided thereon and assisted by a fastener such as a screw / bolt. The second connecting piece 440 has an accommodation space in the interior to provide an accommodation and fixing space for the second detection piece 450. The second detection piece 450 can be an optical mouse sensor, has a chip provided in the interior, and can complete image capturing, digitization and digital processing and the like. The second detection piece 450 can directly measure the rotation of the driven wheel 320, for example, can measure the position of the rotating body through the collection of surface image frames, and determine the motion direction and distance through mathematical operation. The mark 460 can be a texture, pattern, scratch or brushed surface of the driven wheel 320, and cooperates with the second detection piece 450 to improve the recognition accuracy and recognition effect of the second detection piece 450, and improve the accuracy and reliability of the detection result. The detection assembly 400 provided in the example has a shorter response time, more timely paper jam monitoring, and better overall performance of the paper feeding mechanism.

[0049] In a possible implementation, as shown in Figure 7 To improve the detection sensitivity of the second detection piece 450, a second avoiding window 441 can also be provided on the second connecting piece 440. The second avoiding window 441 faces the paper feeding wheel set 300 and allows the detection end of the second detection piece 450 to protrude out of the second connecting piece 440. In this way, the second detection piece 450 can quickly capture the change of the mark 460 on the paper feeding wheel set 300, improve the response speed of the detection assembly 400, and improve the monitoring effect.

[0050] As shown in Figure 3 and Figure 4 In a possible implementation, the paper feeding wheel set 300 is provided in plurality, and the plurality of paper feeding wheel sets 300 are distributed along the paper feeding direction. The detection assembly 400 is also provided in plurality, and one detection assembly 400 is provided corresponding to one paper feeding wheel set 300. In this way, the contact points of the paper feeding wheel set 300 and the paper material in the paper feeding direction can be increased to simultaneously provide the paper material with driving force at different positions of the paper material, improve the paper feeding speed and efficiency, form multiple point limiting on the paper material in the paper feeding direction to ensure the smoothness of the single paper material in conveying, prevent the problem of paper material from being wrinkled due to the two ends being lifted up during conveying, and also realize efficient and orderly conveying of multiple paper materials, and improve the overall performance of the paper feeding mechanism.

[0051] Of course, in other embodiments, the plurality of paper feeding wheel groups 300 can also be distributed in a matrix, and the plurality of detection assemblies 400 are also distributed in a matrix, one detection assembly 400 corresponding to at least one paper feeding wheel group 300. The specific distribution of the plurality of paper feeding wheel groups 300 and the plurality of detection assemblies 400 is not limited herein.

[0052] In addition, the embodiments of the present application also provide an image forming device, comprising a device body and the paper feeding mechanism according to any one of the above, the paper feeding mechanism being arranged in the device body. The specific structure of the paper feeding mechanism is referred to the above embodiments, since the image forming device adopts all the technical solutions of the above embodiments, and thus at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated herein. The image forming device provided by the present example can be a scanner, a photocopier, a printer, a copier, etc., and is not limited herein.

[0053] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and the like are to be construed to be inclusive (i.e., to include both instances of open- and closed- ended conditions) unless otherwise noted or clearly contradicted by context. Method steps, processes, and operations described and claimed herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0054] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to differentiate one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second", and the like are used herein to describe a variety of elements, components, regions, layers and / or sections. Therefore, a first element, component, region, layer or section discussed below can be called a second element, component, region, layer or section without departing from the teachings of example embodiments.

[0055] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A paper feed mechanism characterized by comprising: The application relates to a paper feeding device. The paper feeding device comprises a shell (100) with a paper feeding channel (101); a paper separating wheel (200) arranged in the paper feeding channel (101); a paper feeding wheel set (300) movably arranged in the paper feeding channel (101) and spaced from the paper separating wheel (200), wherein the paper feeding wheel set (300) comprises a driven wheel (320) comprising a rotating shaft (321), a rotating wheel (322) sleeved outside the rotating shaft (321) and rotationally connected with the shell (100) through the rotating shaft (321), and an elastic member (323) arranged between the rotating shaft (321) and the shell (100); and a detection assembly (400) arranged in the shell (100) and corresponding to the paper feeding wheel set (300), wherein the detection assembly (400) is configured to acquire the working condition of the driven wheel (320). The motion track of the rotating wheel (322) comprises a first track formed by rotating around the rotating shaft (321) and a second track formed by the elastic force of the elastic member (323), wherein the first track is arc-shaped, and the second track is linear. The detection assembly (400) comprises a first connecting member (410), a first detection member (420) and a magnet (430), wherein the magnet (430) is arranged in the driven wheel (320) and synchronously moves with the driven wheel (320); the first detection member (420) is a Hall sensor, the first detection member (420) is connected with the shell (100) through the first connecting member (410) and is signal-connected with the magnet (430). The first connecting member (410) is provided with a first avoiding window (411) arranged towards the paper feeding wheel set (300), and the sensing end of the first detection member (420) is located in the first avoiding window (411).

2. The paper feed mechanism according to claim 1, characterized by The paper feeding wheel set (300) further comprises a driving wheel (310) arranged opposite to and spaced from the driven wheel (320), and the gap between the driving wheel (310) and the driven wheel (320) constitutes part of the paper feeding channel (101).

3. The paper feed mechanism according to claim 1, wherein The shell (100) comprises an upper shell (110) and a lower shell (120), wherein the lower shell (120) is arranged opposite to the upper shell (110) and is located below the upper shell (110); the paper feeding channel (101) is located between the upper shell (110) and the lower shell (120), the driving wheel (310) is arranged in the lower shell (120), and the driven wheel (320) and the detection assembly (400) are arranged in the upper shell (110) in a spaced manner.

4. The paper feed mechanism according to claim 3, characterized by ​ 5. The paper feed mechanism according to claim 1, wherein ​ 6. The paper feed mechanism according to claim 5, wherein ​ 7. The paper feed mechanism according to claim 1, wherein The detection assembly (400) comprises a second connecting piece (440), a second detection piece (450) and a mark (460), the mark (460) is arranged on the surface of the paper feeding wheel set (300), the second detection piece (450) is connected with the shell (100) through the second connecting piece (440) and is configured to acquire the mark (460).

8. The paper feed mechanism according to claim 7, characterized by The second connecting piece (440) is provided with a second avoiding window (441), the second avoiding window (441) is arranged towards the paper feeding wheel set (300), and the detection end of the second detection piece (450) is towards the second avoiding window (441).

9. The paper feed mechanism according to claim 1, wherein The paper feeding wheel set (300) is provided in plurality, and the plurality of paper feeding wheel sets (300) are distributed along the paper feeding direction; the detection assembly (400) is provided in plurality, and one detection assembly (400) is arranged corresponding to one paper feeding wheel set (300).

10. An image forming apparatus characterized by comprising: The device comprises a device body and a paper feeding mechanism as claimed in any one of claims 1 to 9, and the paper feeding mechanism is arranged in the device body.

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