Automatic tissue distributor

Abstract

The automatic tissue distributor comprises a machine shell, a tissue outlet device, a tissue collecting device and a driving device, and the machine shell is provided with a tissue outlet and a tissue roll containing area; the paper outlet device comprises a paper outlet roll shaft arranged at the paper outlet, and the paper outlet roll shaft is configured to rotate to drive roll paper to stretch out of the paper outlet. The paper collecting device comprises a paper containing roller shaft located in the paper roll containing area, and the paper containing roller shaft is arranged to be used for sleeving a paper roll and driving the roll paper to retract from the paper outlet through rotation. And the driving device is configured to drive the paper outlet roller shaft and the paper loading roller shaft to rotate. The roll paper stretching and retracting actions are executed through the paper outlet roll shaft and the paper containing roll shaft respectively, the accuracy and stability of stretching and retracting of the roll paper can be improved, and the phenomenon that the roll paper is blocked and clamped in the stretching and retracting processes can be effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of paper towel dispensing, in particular to an automatic paper towel dispenser. Background Art

[0002] Traditional manual paper towel dispensers dispense predetermined lengths of paper towels by pulling or pressing the hands. They are complex to use, do not automatically dispense paper towels, and cannot accurately calculate the length of paper. Currently, there are semi-automatic paper towel dispensers on the market, which extend a certain length of paper towels through a paper dispensing device. When the detector detects the exposed paper towel, the sensor will retract the paper towel to its original length. The extension and retraction of the paper towel are performed by the paper dispensing device located at the paper outlet. In actual use, paper jams are prone to occur. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an automatic paper towel dispenser that solves the problem of paper jam.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] The present invention provides an automatic paper towel dispenser suitable for dispensing paper rolls, the automatic paper towel dispenser comprising:

[0006] The casing is provided with a paper outlet and a paper roll placement area;

[0007] A paper discharging device, comprising a paper discharging roller shaft provided at the paper discharging port, wherein the paper discharging roller shaft is configured to drive the roll paper to extend out of the paper discharging port by rotating;

[0008] The paper receiving device comprises a paper loading roller located in the paper roll placement area, wherein the paper loading roller is configured to be fitted onto the paper roll and rotate to drive the paper roll to retract from the paper outlet;

[0009] The driving device is configured to drive the paper discharge roller and the paper loading roller to rotate.

[0010] The automatic paper towel dispenser of the present invention has the following beneficial effects:

[0011] When in use, the paper roll is placed in the paper roll placement area and the paper roll is fixedly mounted on the paper loading roller. When distributing the rolled paper, the paper discharge roller is driven to rotate by the driving device, and the contact friction between the paper discharge roller and the rolled paper drives the rolled paper to extend from the paper discharge port to achieve automatic extension of the rolled paper. When the rolled paper exposed outside the paper discharge port needs to be retracted, the paper loading roller is driven to rotate by the driving device to drive the paper roll mounted on the paper loading roller to rotate, thereby driving the rolled paper to retract from the paper discharge port to achieve automatic retraction of the rolled paper. Compared with the existing method of using a single roller to perform the above two actions, the present invention uses the paper discharge roller and the paper loading roller to respectively perform the roll extending and retracting actions, which can improve the accuracy and stability of the roll extending and retracting, and can effectively avoid the phenomenon of paper jam during the extending and retracting process of the roll.

[0012] As a further improvement of the above technical solution, the driving device includes a reversing transmission mechanism and a rotation driving unit, the rotation driving unit having a rotation output end, and the rotation output end is respectively connected to the paper discharge roller shaft and the paper loading roller shaft through the reversing transmission mechanism, and the reversing transmission mechanism is configured to provide a rotational torque to the paper loading roller shaft when the rotation output end is driven to rotate around a first rotation direction, and to provide a rotational torque to the paper discharge roller shaft when the rotation output end is driven to rotate around a second rotation direction.

[0013] As a further improvement of the above technical solution, the reversing transmission mechanism includes a driving gear, a first driven gear, a second driven gear, a first movable gear and a second movable gear, the driving gear is connected to the rotation output end, the first driven gear is connected to the paper loading roller shaft, the second driven gear is connected to the paper discharge roller shaft, the first movable gear and the second movable gear are arranged in a ring-shaped interval on the outer peripheral side of the driving gear and mesh with the driving gear, the first movable gear and the second movable gear are movably arranged relative to the driving gear along an arc trajectory with the center of the driving gear as the center, the first movable gear is configured to be meshed and connected between the first driven gear and the driving gear when the rotation output end is driven to rotate around the first rotation direction, and the second movable gear is configured to be meshed and connected between the second driven gear and the driving gear when the rotation output end is driven to rotate around the second rotation direction.

[0014] As a further improvement of the above technical solution, the reversing transmission mechanism also includes a first arc track and a second arc track with the center of the driving gear as the center, the first driven gear is rotatably and slidably connected to the first arc track, and the second movable gear is rotatably and slidably connected to the second arc track.

[0015] As a further improvement of the above technical solution, the reversing transmission mechanism includes a fixed plate, the first movable gear and the second movable gear are clamped between the fixed plate and the shell wall of the casing, the fixed plate and the shell wall of the casing are respectively provided with the first circular arc track and the second circular arc track, the two ends of the first movable gear are respectively connected to the first circular arc track on both sides, and the two ends of the second movable gear are respectively connected to the second circular arc track on both sides.

[0016] As a further improvement of the above technical solution, the first movable gear includes a first pinion and a first large gear that are coaxial and fixedly connected, the first pinion meshes with the first driven gear, and the first large gear meshes with the driving gear;

[0017] The second movable gear includes a second pinion gear and a second large gear that are coaxial and fixedly connected, the second pinion gear is meshed with the second driven gear, and the second large gear is meshed with the driving gear.

[0018] As a further improvement of the above technical solution, the paper discharge device also includes an angle encoder for detecting the rotation angle of the second driven gear.

[0019] As a further improvement of the above technical solution, the paper discharge device also includes a paper pressing mechanism, which includes a paper pressing roller and a paper pressing elastic structure. The paper pressing roller and the paper discharge roller are arranged relatively parallel, and the paper pressing elastic structure is configured to make the paper pressing roller and the paper discharge roller close to each other.

[0020] As a further improvement of the above technical solution, the housing is provided with an openable cover, the paper outlet is formed between the cover and the housing, and the paper pressing mechanism is installed on the cover.

[0021] As a further improvement of the above technical solution, the automatic paper towel dispenser also includes a paper output trigger sensor and a paper collection trigger sensor respectively connected to the driving device, the paper output trigger sensor is configured to detect external paper output information to trigger the driving device to drive the paper output roller shaft to rotate so as to drive the roll paper to extend from the paper output port, and the paper collection trigger sensor is configured to detect the length of the roll paper exposed out of the paper output port to trigger the driving device to drive the paper loading roller shaft to rotate so as to drive the roll paper to retract from the paper output port.

[0022] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0024] Figure 1 is a cross-sectional view of an embodiment of the automatic paper towel dispenser provided by the present invention;

[0025] Figure 2 This is a bottom schematic diagram of an embodiment of the automatic paper towel dispenser provided by the present invention;

[0026] Figure 3 This is a schematic diagram of the interior of the automatic paper towel dispenser provided by the present invention after opening the cover of one embodiment;

[0027] Figure 4 This is an exploded view of an embodiment of the reversing transmission mechanism provided by the present invention;

[0028] Figure 5 This is a transmission schematic diagram of a reversing transmission mechanism provided by the present invention, when a roll of paper is extended in one embodiment;

[0029] Figure 6 This is a schematic diagram of the transmission of the reversing transmission mechanism provided by the present invention when the paper roll is retracted in one embodiment;

[0030] Figure 7 This is an exploded view of the paper pressing mechanism of an automatic paper towel dispenser provided by the present invention after the cover is opened;

[0031] Figure Number:

[0032] Housing 100; paper outlet 110; paper roll placement area 120; clamping slot 130; cover 140;

[0033] Paper discharge device 200; paper discharge roller 210; angle encoder 220; paper pressing mechanism 230; paper pressing roller 231; mounting slide clamp 232; spring 233;

[0034] Paper receiving device 300; paper loading roller 310;

[0035] Driving device 400; reversing transmission mechanism 410; driving gear 411; first driven gear 412; second driven gear 413; detection hole 4131; first movable gear 414; second movable gear 415; first circular arc track 416; second circular arc track 417; fixing plate 418; rotation driving unit 420;

[0036] Paper discharge trigger sensor 500;

[0037] The paper collection trigger sensor 600. DETAILED DESCRIPTION

[0038] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] Currently, in the field of paper towel distribution, there are manual paper towel dispensers and semi-automatic paper towel dispensers. The manual paper towel dispenser distributes a predetermined length of paper towel by hand pulling or pressing, and its disadvantages are: the function is complicated to use, the paper towel cannot be automatically distributed, and the length of the paper cannot be accurately calculated; while the semi-automatic paper towel dispenser distributes paper towels that extend out to a certain length through an induction sensor. When the detector detects the exposed paper towel, the sensor will retract the paper towel to its original length position, wherein the extension and retraction of the paper towel are both performed by a paper discharge device 200 located at the paper outlet 110. It can be understood that the existing semi-automatic paper towel dispenser performs the extension and retraction of the paper towel through a single execution device, and paper jams are prone to occur during the extension or retraction of the paper towel.

[0043] Furthermore, the present invention provides an automatic paper towel dispenser, which is suitable for dispensing paper rolls and can effectively solve the problem of paper jams occurring during the extension and retraction of paper towels.

[0044] like Figure 1 As shown, the automatic paper towel dispenser according to the embodiment of the present invention comprises a housing 100 , a paper discharging device 200 , a paper collecting device 300 and a driving device 400 .

[0045] like Figure 1 and Figure 2As shown, the housing 100 is provided with a paper outlet 110 and a paper roll placement area 120. The paper outlet 110 of this embodiment is arranged at the bottom of the housing 100, and the paper outlet 110 is strip-shaped. The paper outlet 110 is arranged on the left and right. In some other embodiments, the paper outlet 110 can be arranged on other sides of the housing 100, and the paper outlet 110 can be other shapes.

[0046] The paper roll placement area 120 is located inside the housing 100 and is used to place paper rolls. The paper outlet 110 is connected to the paper roll placement area 120 . When in use, the rolled paper on the paper roll is pulled out to the paper outlet 110 .

[0047] like Figure 1 and Figure 3 As shown, the paper receiving device 300 of the embodiment of the present invention includes a paper loading roller 310, wherein the paper loading roller 310 is arranged in the paper roll placement area 120, the paper loading roller 310 is used to fix the paper roll, and the paper loading roller 310 is rotatably arranged around its own axis relative to the housing 100. When in use, the paper roll is fixedly mounted on the outer periphery of the paper loading roller 310, and the paper roll is driven to rotate by rotating the paper loading roller 310, so as to drive the rolled paper to retract from the paper outlet 110.

[0048] In order to match the paper outlet 110 , the paper loading roller 310 extends leftward and rightward, so that the paper roll is arranged leftward and rightward in the paper roll placement area 120 during assembly. In some other embodiments, the paper loading roller 310 may be extended in other directions.

[0049] like Figure 1 and Figure 3 As shown, the paper discharge device 200 includes a paper discharge roller 210, which is arranged at the paper discharge port 110. The paper discharge roller 210 of the embodiment of the present invention is extended left and right and arranged inside the paper discharge port 110. The paper discharge roller 210 is rotatably arranged around its own axis relative to the housing 100. The left and right ends of the paper discharge roller 210 are rotatably connected to the housing 100. When in use, the roll of paper is abutted against the outer periphery of the paper discharge roller 210. Under the action of the friction between the roll of paper and the paper discharge roller 210, the roll of paper is driven to extend out of the paper discharge port 110 by rotating the paper discharge roller 210.

[0050] In some other embodiments, the paper discharge roller 210 may be extended along other directions.

[0051] like Figure 3 As shown, in order to increase the friction between the paper discharge roller 210 and the paper roll, a plurality of friction sleeves 211 are provided on the outer periphery of the paper discharge roller 210 in the embodiment of the present invention. The paper discharge roller 210 contacts the paper roll through the plurality of friction sleeves 211, so that the paper discharge is smoother and slipping is avoided.

[0052] The driving device 400 of the embodiment of the present invention is configured to drive the paper discharge roller 210 and the paper loading roller 310 to rotate. When the paper roll is extended, the driving device 400 drives the paper discharge roller 210 to rotate alone, and when the paper roll is retracted, the driving device 400 drives the paper loading roller 310 to rotate alone.

[0053] Furthermore, when distributing the roll paper, the paper discharge roller 210 is driven to rotate by the driving device 400, and the contact friction between the paper discharge roller 210 and the roll paper drives the roll paper to extend from the paper discharge port 110, so as to realize automatic extension of the roll paper. When the roll paper exposed outside the paper discharge port 110 needs to be retracted, the paper loading roller 310 is driven to rotate by the driving device 400, so as to drive the paper roll mounted on the paper loading roller 310 to rotate, thereby driving the roll paper to retract from the paper discharge port 110, so as to realize automatic retraction of the roll paper.

[0054] Compared with the existing method of using a single actuator to perform the above two actions, the present invention uses the paper discharge roller 210 and the paper loading roller 310 to respectively perform the paper roll extension and paper roll retraction actions, which can improve the accuracy and stability of the paper roll extension and retraction, and can effectively avoid paper jams during the extension and retraction process.

[0055] In some embodiments, the driving device 400 may be provided with two power sources to be respectively connected to the paper discharge roller 210 and the paper loading roller 310, wherein one power source drives the paper discharge roller 210 to rotate, and the other power source drives the paper loading roller 310 to rotate. However, the two power sources take up a lot of space, have high energy consumption, and have high manufacturing costs.

[0056] The driving device 400 of the embodiment of the present invention uses one power source to realize the independent driving of the paper discharge roller 210 and the paper loading roller 310 .

[0057] The driving device 400 of the embodiment of the present invention includes a reversing transmission mechanism 410 and a rotation driving unit 420. The driving device 400 is installed on one side of the housing 100. The rotation driving unit 420 has a rotation output end. The rotation driving unit 420 of this embodiment adopts a motor. In some other embodiments, the rotation driving unit 420 may adopt a servo motor.

[0058] like Figure 4As shown, the rotary output end of the rotary drive unit 420 of the embodiment of the present invention is respectively connected to the paper discharge roller 210 and the paper loading roller 310 through the reversing transmission mechanism 410, wherein the reversing transmission mechanism 410 is configured to provide a rotational torque to the paper loading roller 310 when the rotary output end is driven to rotate around a first rotation direction, and to provide a rotational torque to the paper discharge roller 210 when the rotary output end is driven to rotate around a second rotation direction. It can be understood that when the roll paper needs to be retracted, the rotary output end of the rotary drive unit 420 is controlled to start rotating around the first rotation direction, and the reversing transmission mechanism 410 is The rotational torque of the rotational drive unit 420 is transmitted to the paper loading roller 310 to drive the paper loading roller 310 to rotate and drive the paper roll to retract, and at this time there is no torque transmission between the rotational drive unit 420 and the paper discharge roller 210; when the paper roll needs to be extended, the rotation output end of the rotational drive unit 420 is controlled to start rotating around the second rotation direction, and the reversing transmission mechanism 410 transmits the rotational torque of the rotational drive unit 420 to the paper discharge roller 210 to drive the paper discharge roller 210 to rotate and drive the paper roll to extend, and at this time there is no torque transmission between the rotational drive unit 420 and the paper loading roller 310.

[0059] The present invention realizes the extension and retraction of the paper roll respectively through the forward and reverse driving of the rotation driving unit 420, so that the structure of the paper towel dispenser is more compact and the manufacturing cost can be reduced.

[0060] The specific structure of the reversing transmission mechanism 410 is as follows: Figure 4 , 5 As shown in , 6, the reversing transmission mechanism 410 of the present embodiment includes a driving gear 411, a first driven gear 412, a second driven gear 413, a first movable gear 414 and a second movable gear 415. The driving gear 411 is connected to the rotation output end, the first driven gear 412 is coaxially connected to one end of the paper loading roller shaft 310, the second driven gear 413 is axially connected to one end of the paper discharge roller shaft 210, the first movable gear 414 and the second movable gear 415 are arranged at an annular interval on the outer peripheral side of the driving gear 411, the first movable gear 414 and the second movable gear 415 are respectively meshed with the driving gear 411, and the first movable gear 414 and the second movable gear 415 are movably arranged relative to the driving gear 411 along a circular trajectory with the center of the driving gear 411 as the center. It can be understood that the first movable gear 414 and the second movable gear 415 slide along the circular trajectory relative to the housing 100.

[0061] The first movable gear 414 of the embodiment of the present invention is arranged between the first driven gear 412 and the driving gear 411. The first movable gear 414 is configured to be meshed and connected between the first driven gear 412 and the driving gear 411 when the rotating output end is driven to rotate around the first rotation direction, so as to realize the torque transmission between the rotating output end and the paper loading roller shaft 310.

[0062] The second movable gear 415 of the embodiment of the present invention is arranged between the second driven gear 413 and the driving gear 411. The second movable gear 415 is configured to be meshed and connected between the second driven gear 413 and the driving gear 411 when the rotating output end is driven to rotate around the second rotation direction, so as to realize the torque transmission between the rotating output end and the paper output roller shaft 210.

[0063] It is understandable that if Figure 5 As shown, when the rotating output end is driven to rotate around the first rotating direction, the first movable gear 414 and the second movable gear 415 follow the driving gear 411 and move along the arc track toward the first rotating direction. The first movable gear 414 moves between the first driven gear 412 and the driving gear 411, and meshes with the first driven gear 412 and the driving gear 411 respectively, while the second movable gear 415 is disengaged from the second driven gear 413; Figure 6 As shown, when the rotating output end is driven to rotate around the second rotation direction, the first movable gear 414 and the second movable gear 415 follow the driving gear 411 to move along the arc trajectory toward the second rotation direction, and the second movable gear 415 moves between the second driven gear 413 and the driving gear 411, and meshes with the second driven gear 413 and the driving gear 411 respectively, while the first movable gear 414 disengages from the first driven gear 412.

[0064] Furthermore, the reversing transmission mechanism 410 of the present embodiment also includes a first circular arc track 416 and a second circular arc track 417, each of which has the center of the driving gear 411 as the center. The first circular arc track 416 and the second circular arc track 417 are arranged in a ring-shaped interval. The first circular arc track 416 is arranged between the first driven gear 412 and the driving gear 411, and the second circular arc track 417 is arranged between the second driven gear 413 and the driving gear 411. The first driven gear 412 is rotatably and slidably connected to the first circular arc track 416, and the second movable gear 415 is rotatably and slidably connected to the second circular arc track 417.

[0065] In the embodiment of the present invention, the movement of the first driven gear 412 is limited by the first arc track 416, and the working position and the separation position of the first driven gear 412 are defined. Figure 5As shown, when the first driven gear 412 moves along the first rotation direction to one end of the first circular arc track 416, the first driven gear 412 is in the working position, and the first driven gear 412 is respectively engaged with the first driven gear 412 and the driving gear 411, and when the first driven gear 412 moves along the second rotation direction to the other end of the first circular arc track 416, the first driven gear 412 is in the separation position, and the first driven gear 412 is disengaged from the first driven gear 412.

[0066] The effect of the second arc track 417 on the second movable gear 415 is the same as the effect of the first arc track 416 on the first driven gear 412. Figure 6 shown.

[0067] In addition, the reversing transmission mechanism 410 of the embodiment of the present invention also includes a fixed plate 418, and the first movable gear 414 and the second movable gear 415 are clamped between the fixed plate 418 and the side wall of the casing 100. The fixed plate 418 and the shell wall of the casing 100 are respectively provided with a first arc track 416 and a second arc track 417. The two ends of the first movable gear 414 are respectively slidably connected to the first arc track 416 on both sides, and the two ends of the second movable gear 415 are respectively slidably connected to the second arc track 417 on both sides, so that the stability of the movement of the first movable gear 414 and the second movable gear 415 can be improved.

[0068] like Figure 4 As shown, the first movable gear 414 of the embodiment of the present invention includes a first pinion and a first large gear that are coaxial and fixedly connected, the first pinion meshes with the first driven gear 412, and the first large gear meshes with the driving gear 411, and the second movable gear 415 includes a second pinion and a second large gear that are coaxial and fixedly connected, the second pinion meshes with the second driven gear 413, and the second large gear meshes with the driving gear 411, so that the effect of variable speed transmission can be achieved.

[0069] In some embodiments, the reversing transmission mechanism 410 may include two one-way transmission wheels, in which a one-way axial direction is arranged to realize the transmission of a one-way torque. The rotation transmission directions of the two one-way transmission wheels are arranged in opposite directions. The two one-way transmission wheels are respectively connected to the paper discharge roller shaft 210 and the paper loading roller shaft 310. The rotation output end of the rotation drive unit 420 is connected to the two one-way transmission wheels. In this way, the paper discharge roller shaft 210 and the paper loading roller shaft 310 can be driven separately by the forward and reverse driving of the rotation drive unit 420 to realize the extension and retraction of the paper roll.

[0070] like Figure 4As shown, the paper discharge device 200 of the embodiment of the present invention further includes an angle encoder 220 for detecting the rotation angle of the second driven gear 413. The rotation angle of the paper discharge roller 210 when driving the paper roll to extend is indirectly obtained by detecting the rotation angle of the second driven gear 413, and the extended length of the paper roll is obtained by calculation. Because the paper discharge roller 210 rotates when the paper towel retracts, the embodiment of the present invention detects the second driven gear 413 by the angle encoder 220, and can accurately detect the paper discharge length.

[0071] In the embodiment of the present invention, a plurality of detection holes 4131 are evenly distributed in a ring shape on the second driven gear 413 , and the plurality of detection holes 4131 are arranged opposite to the angle encoder 220 .

[0072] like Figure 1 and Figure 7 As shown, the paper discharge device 200 of the embodiment of the present invention further includes a paper pressing mechanism 230, which includes a paper pressing roller 231 and a paper pressing elastic structure. The paper pressing roller 231 is arranged relatively parallel to the paper discharge roller 210, and the paper pressing elastic structure is configured to make the paper pressing roller 231 and the paper discharge roller 210 close to each other. In this embodiment, the paper pressing elastic structure is used to form an elastic force trend between the paper pressing roller 231 and the paper discharge roller 210 to approach each other, so as to press the roll paper between the paper pressing roller 231 and the paper discharge roller 210. When the paper discharge roller 210 rotates, the friction between the paper discharge roller 210 and the roll paper can be increased to ensure that the roll paper can be driven to be discharged.

[0073] The two ends of the paper pressing roller 231 of the embodiment of the present invention are respectively provided with mounting sliding clips 232, and the housing 100 is provided with a clamping groove 130 corresponding to the mounting sliding clip 232. The paper pressing roller 231 is installed on the housing 100 through the mounting sliding clip 232. The paper pressing elastic structure includes a spring 233 acting between the mounting sliding clip 232 and the clamping groove 130 to achieve elastic force buffering of the paper pressing roller 231, which is easy to install. At this time, the paper pressing elastic structure provides the paper pressing roller 231 with elastic force toward the paper output roller 210.

[0074] Furthermore, if Figure 1 , 2As shown in Figures 7 and 8, the casing 100 of this embodiment is provided with an openable cover 140, which is arranged at the front side of the casing 100, and the paper outlet 110 is formed at the bottom between the cover 140 and the casing 100, and the above-mentioned paper pressing mechanism 230 is installed on the cover 140, and the clamping groove 130 is also arranged on the cover 140, so as to facilitate the installation of the paper roll. When the roll paper is used up, the cover 140 is opened, and the paper pressing roller 231 is opened together with the cover 140, and the paper pressing roller 231 is separated from the paper outlet roller 210, and the paper roll is installed in the paper roll placement area 120, and the paper is rolled to the paper outlet roller 210, and then the cover 140 is closed, and the paper pressing roller 231 presses the roll paper tightly against the paper outlet roller 210.

[0075] The upper end of the cover 140 of this embodiment is hinged to the housing 100, and the cover 140 can be opened and closed by flipping up and down, which is easy to operate.

[0076] In addition, if Figure 1 and 2 As shown, the automatic paper towel dispenser of the embodiment of the present invention further includes a paper discharge trigger sensor 500 and a paper collection trigger sensor 600 , and the paper discharge trigger sensor 500 and the paper collection trigger sensor 600 are respectively connected to the driving device 400 by signals.

[0077] The paper discharge trigger sensor 500 is configured to detect external paper discharge information to trigger the drive device 400 to drive the paper discharge roller 210 to rotate so as to drive the roll paper to extend from the paper discharge port 110. The paper discharge trigger sensor 500 can adopt gesture sensing or voice control sensing. When in use, the paper discharge trigger sensor 500 senses external gestures or sounds to trigger the start of the rotation drive unit 420. When the paper discharge trigger sensor 500 senses external hand movements, the rotation drive unit 420 is driven to rotate around the second rotation direction to drive the paper discharge roller 210 to rotate. At this time, the roll paper extends according to a preset length. The paper discharge trigger sensor 500 of this embodiment is set at the bottom of the housing 100 and is located beside the paper discharge port 110 to facilitate paper removal. In other embodiments, it can be set at other positions.

[0078] The paper collection trigger sensor 600 is configured to detect the length of the paper roll exposed from the paper outlet 110, so as to trigger the driving device 400 to drive the paper loading roller 310 to rotate and drive the paper roll to retract from the paper outlet 110. When in use, after taking out the paper, a part of the paper roll is exposed, which may cause cross infection or splashing. Therefore, the embodiment of the present invention detects the length of the paper roll exposed from the paper outlet 110 through the paper collection trigger sensor 600. When the exposed length reaches a first preset length or after a certain period of time, the trigger driving device 400 drives the paper loading roller 310 to rotate, and drives the paper roll to retract from the paper outlet 110 to a set position. At this time, the paper collection trigger sensor 600 is also used to detect the retracted position of the paper roll to ensure that the paper roll is retracted in place. Then, the next time the paper is discharged, the length of the paper roll extended is measured based on the retracted position of the paper roll.

[0079] The paper towel dispenser of the present invention can realize intelligent control, and the use experience of the intelligent paper towel dispenser function is more concise and humanized, and the accuracy and stability of extending and retracting the paper towel are improved, the failure of paper jamming is avoided, and the energy loss is reduced.

[0080] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An automatic paper towel dispenser, characterized in that: Suitable for dispensing paper rolls, the automatic paper towel dispenser comprises: The casing is provided with a paper outlet and a paper roll placement area; A paper discharging device, comprising a paper discharging roller shaft provided at the paper discharging port, wherein the paper discharging roller shaft is configured to drive the roll paper to extend out of the paper discharging port by rotating; The paper receiving device comprises a paper loading roller located in the paper roll placement area, wherein the paper loading roller is configured to be fitted onto the paper roll and rotate to drive the paper roll to retract from the paper outlet; The driving device is configured to drive the paper discharge roller and the paper loading roller to rotate.

2. The automatic paper towel dispenser according to claim 1, characterized in that: The driving device includes a reversing transmission mechanism and a rotation driving unit, the rotation driving unit having a rotation output end, the rotation output end being respectively connected to the paper discharge roller shaft and the paper loading roller shaft through the reversing transmission mechanism, the reversing transmission mechanism being configured to provide a rotation torque to the paper loading roller shaft when the rotation output end is driven to rotate around a first rotation direction, and to provide a rotation torque to the paper discharge roller shaft when the rotation output end is driven to rotate around a second rotation direction.

3. The automatic paper towel dispenser according to claim 2, characterized in that: The reversing transmission mechanism includes a driving gear, a first driven gear, a second driven gear, a first movable gear and a second movable gear, the driving gear is connected to the rotation output end, the first driven gear is connected to the paper loading roller shaft, the second driven gear is connected to the paper discharge roller shaft, the first movable gear and the second movable gear are arranged at an annular interval on the outer peripheral side of the driving gear and meshed with the driving gear, the first movable gear and the second movable gear are movably arranged relative to the driving gear along an arc trajectory with the center of the driving gear as the center, the first movable gear is configured to be meshed and connected between the first driven gear and the driving gear when the rotation output end is driven to rotate around the first rotation direction, and the second movable gear is configured to be meshed and connected between the second driven gear and the driving gear when the rotation output end is driven to rotate around the second rotation direction.

4. The automatic paper towel dispenser according to claim 3, characterized in that: The reversing transmission mechanism also includes a first arc track and a second arc track respectively centered on the center of the driving gear, the first driven gear is rotatably and slidably connected to the first arc track, and the second movable gear is rotatably and slidably connected to the second arc track.

5. The automatic paper towel dispenser according to claim 4, characterized in that: The reversing transmission mechanism includes a fixed plate, the first movable gear and the second movable gear are clamped between the fixed plate and the shell wall of the casing, the fixed plate and the shell wall of the casing are respectively provided with the first circular arc track and the second circular arc track, the two ends of the first movable gear are respectively connected to the first circular arc track on both sides, and the two ends of the second movable gear are respectively connected to the second circular arc track on both sides.

6. The automatic paper towel dispenser according to claim 3, characterized in that: The first movable gear comprises a first pinion and a first large gear that are coaxial and fixedly connected, the first pinion meshes with the first driven gear, and the first large gear meshes with the driving gear; The second movable gear includes a second pinion gear and a second large gear that are coaxial and fixedly connected, the second pinion gear is meshed with the second driven gear, and the second large gear is meshed with the driving gear.

7. The automatic paper towel dispenser according to claim 3, characterized in that: The paper discharging device further includes an angle encoder for detecting a rotation angle of the second driven gear.

8. The automatic paper towel dispenser according to claim 1, characterized in that: The paper discharge device also includes a paper pressing mechanism, which includes a paper pressing roller and a paper pressing elastic structure. The paper pressing roller is arranged relatively parallel to the paper discharge roller, and the paper pressing elastic structure is configured to make the paper pressing roller and the paper discharge roller close to each other.

9. The automatic paper towel dispenser according to claim 8, characterized in that: The housing is provided with an openable cover, the paper outlet is formed between the cover and the housing, and the paper pressing mechanism is installed on the cover.

10. The automatic paper towel dispenser according to claim 1, characterized in that: The automatic paper towel dispenser also includes a paper discharge trigger sensor and a paper collection trigger sensor respectively connected to the driving device, the paper discharge trigger sensor is configured to detect external paper discharge information to trigger the driving device to drive the paper discharge roller shaft to rotate so as to drive the roll paper to extend from the paper discharge port, and the paper collection trigger sensor is configured to detect the length of the roll paper exposed outward from the paper discharge port to trigger the driving device to drive the paper loading roller shaft to rotate so as to drive the roll paper to retract from the paper discharge port.

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