Full-automatic pencil sharpener capable of changing shape of pencil point

Abstract

The utility model discloses a full-automatic pencil sharpener capable of changing the shape of a pencil point, which can automatically feed and sharpen a pencil, and is convenient for a user to customize the shape, length and thickness of the pencil point according to different drawing requirements. The full-automatic pencil sharpener comprises a shell, and a rotary pencil feeding mechanism is arranged in the shell. The inner side of the shell is symmetrically connected with the fixed brackets; the inner sides of the fixed brackets are connected with the reversing mechanisms in a sliding manner; the knife rest assembly is connected between one sides of the reversing mechanisms; the power devices are connected between the knife rest assemblies and the fixed support; and the operation interface is arranged at the upper part of the shell. The full-automatic pencil sharpener has the function of changing the shape of the pencil point in a personalized mode, is easy and convenient to operate, high in safety and particularly suitable for being used by children and beginners.

Description

Technical Field

[0001] This utility model relates to the field of pencil sharpener technology, specifically to a fully automatic pencil sharpener that can change the shape of the pencil tip. Background Technology

[0002] When creating art, pencil tips are sharpened into different shapes, lengths, and thicknesses to accommodate various drawing needs and techniques. However, for children and beginners, the traditional method of manually sharpening pencils with a craft knife is time-consuming, laborious, and carries the risk of hand injury, hindering children's development and beginners' drawing skills. Controlling the shape and length of the pencil tip during sharpening involves randomness, making it difficult for sharpeners to produce a standardized shape, length, and thickness. These two problems have existed for a long time, and the past approach has been to spend a significant amount of time mastering the technique of manually sharpening pencils, often failing to achieve the desired effect—a highly unreasonable approach.

[0003] Electric pencil sharpeners are currently widely used. They automatically feed, sharpen, and eject pencils, achieving automatic cutting without human intervention, even with preset tip length and thickness. While electric pencil sharpeners can efficiently cut pencils with preset tip length and thickness, the resulting pencil tips remain traditional cone shapes. Sharpeners still need to manually cut the tips to suit different drawing needs and techniques. Therefore, a highly efficient, fully automatic pencil sharpener that allows for customized tip shapes is currently lacking. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned above and provide a fully automatic pencil sharpener that can change the shape of the pencil tip.

[0005] The technical solution of this utility model is as follows: A fully automatic pencil sharpener capable of changing the shape of the pencil tip includes a housing, a rotating pencil insertion mechanism, a fixed bracket, a reversing mechanism, a blade holder assembly, a support base, and a power unit. The power unit is electrically connected to the fixed bracket and the support base, and is also electrically connected to the rotating pencil insertion mechanism, the reversing mechanism, and the blade holder assembly. The bracket is located on both sides of the rotating pencil insertion mechanism, the reversing mechanism is located below the rotating pencil insertion mechanism, and the blade holder assembly is located below the reversing mechanism. Further preferably, a fully automatic pencil sharpener capable of changing the shape of the pencil tip includes: a housing; a rotating pencil-feeding mechanism located inside the housing for automatically receiving and fixing the pencil, ensuring the positioning and rotation of the pencil, the rotating pencil-feeding mechanism including: an external support for the feeding mechanism and an internal support for the feeding mechanism that rotatably cooperates with the external support for the feeding mechanism; a reversing mechanism disposed at the output end of the internal support for the feeding mechanism; a blade holder assembly mounted on the reversing mechanism via a coupling; and a power unit including: a main drive motor for driving the blade holder assembly to rotate, a first auxiliary drive motor for driving the external support for the feeding mechanism to rotate, and a second auxiliary drive motor for driving the blade holder assembly to slide.

[0006] Preferably, the main drive motor, the first auxiliary drive motor, and the second auxiliary drive motor are connected to a microprocessor, the microprocessor is connected to a touchscreen, and the touchscreen is disposed on the housing. Further, the housing includes a touchscreen, a first housing, a top cover, a housing connecting ring, a second housing, a side wall connecting ring, a side wall, a base housing, a rear wall connecting ring, and a rear wall. The touchscreen, the first housing, the housing connecting ring, the second housing, the side wall connecting ring, the side wall, and the rear wall connecting ring are fixedly connected to the rear wall. The top cover is magnetically connected to the first housing, and the base housing is snap-fit ​​connected to the second housing.

[0007] Preferably, the internal support of the pen-feeding mechanism is equipped with a gear set, and the gear set is equipped with a clamping mechanism for holding the pen barrel. The external support of the pen-feeding mechanism and the auxiliary drive motor are connected by a worm gear. The axis of the external support of the feeding mechanism forms an angle of 0.0 degrees to 10.0 degrees with the axis of the internal support of the feeding mechanism, and provides a complementary function. Furthermore, the rotating pen-feeding mechanism includes an external support for the feeding mechanism, an internal support for the feeding mechanism, an inlet tube, a worm gear for the rotating mechanism, a first bushing of the internal support for the feeding mechanism, a first passive feeding wheel, a first gear for the feeding mechanism, a worm gear for the feeding mechanism, a passive feeding wheel support, a first passive feeding wheel shaft, a second passive feeding wheel shaft, an active feeding wheel shaft, an active feeding wheel shaft bushing, a second bushing of the internal support for the feeding mechanism, a worm gear for the feeding mechanism, an active feeding wheel, a counterweight for the feeding mechanism, a second passive feeding wheel, a spring for the first feeding mechanism, a guide rod for the first passive feeding wheel support, a guide rod for the second passive feeding wheel support, a spring for the second feeding mechanism, a planetary gear coupling, a worm gear shaft for the rotating mechanism, a shaft of the external support for the feeding mechanism, a brush, a brush fastener, and a receiving ring.The internal support of the feeding mechanism is driven by the first and second bushings of the internal support and the external support of the feeding mechanism. The first and second passive feeding wheel support guide rods are fixedly connected to the passive feeding wheel support and slidably connected to the internal support of the feeding mechanism. A first feeding mechanism spring is sleeved on the first and second passive feeding wheel support guide rods, and a second feeding mechanism spring is sleeved on the second passive feeding wheel support guide rod. The first and second passive feeding wheel shafts are fixedly connected to the first and second passive feeding wheels and slidably connected to the passive feeding wheel support. The first and second passive feeding wheel shafts are also slidably connected to the internal support of the feeding mechanism. The active feeding wheel shaft is connected to the active feeding wheel, the feeding mechanism worm gear, and the feeding mechanism... The feeding mechanism is fixedly connected in several ways: the active feed wheel shaft is slidably connected to the internal support of the feeding mechanism; the first gear of the feeding mechanism is fixedly connected to the worm gear of the feeding mechanism; the worm gear of the feeding mechanism is slidably connected to the internal support of the feeding mechanism; the worm gear of the feeding mechanism is drively connected to the worm wheel of the feeding mechanism; the first gear of the feeding mechanism is drively connected to the external support of the feeding mechanism; the inlet pipe is fixedly connected to the external support of the feeding mechanism; the rotating mechanism worm wheel is fixedly connected to the external support of the feeding mechanism; the rotating mechanism worm wheel is slidably connected to the first feeding mechanism support via the rotating mechanism worm wheel shaft; the external support of the feeding mechanism is slidably connected to the second feeding mechanism support via the external support shaft of the feeding mechanism; the brush fastener is fixedly connected to the passive feed wheel support; the brush is fixedly connected to the brush fastener; the power receiving ring is fixedly connected to the external support of the feeding mechanism; the brush and the power receiving ring are in slidable contact; and the power receiving ring is fixedly connected to the rotating mechanism worm wheel shaft and the external support shaft of the feeding mechanism.

[0008] Preferably, the fixed bracket includes a first feeding mechanism support, a second feeding mechanism support, a first rotating mechanism gear, a rotating mechanism worm, and a second rotating mechanism gear. The rotating mechanism worm and the second rotating mechanism gear are fixedly connected. The first feeding mechanism support is slidably connected to the first rotating mechanism gear and the rotating mechanism worm. The power device is electrically connected to the first rotating mechanism gear. The first rotating mechanism gear is tractably connected to the second rotating mechanism gear. The rotating mechanism worm is tractably connected to the rotating mechanism worm wheel. The support base is fixedly connected to the first feeding mechanism support and the second feeding mechanism support.

[0009] Preferably, the reversing mechanism includes a planetary gear set. Further, the reversing mechanism includes a reversing mechanism gear sleeve, a first coupling, a planetary gear coupling shaft, a first planetary gear, a first bolt, a lower end of a three-pivot universal joint, an upper end of a three-pivot universal joint, an inner sleeve of a driving bevel gear, an inner spring of the driving bevel gear, a second bolt, a driving bevel gear, a second planetary gear, and a driven bevel gear. The reversing mechanism gear sleeve is fixedly connected to the external support of the feeding mechanism, the driven bevel gear is fixedly connected to the internal support of the feeding mechanism, and the planetary gear coupling shaft is slidably connected to the reversing mechanism gear sleeve. The first planetary gear, the second planetary gear... The gear is axially coupled to the planetary gear, the inner sleeve of the driving bevel gear is slidably connected to the driving bevel gear, the inner spring of the driving bevel gear is sleeved on the inner sleeve of the driving bevel gear, the driving bevel gear is fixedly connected to the upper end of the three-pivot universal joint, the first planetary gear, the second planetary gear are drively connected to the driving bevel gear and the driven bevel gear, the first coupling is fixedly connected to the lower end of the three-pivot universal joint by the first bolt and the second bolt, and the lower end of the three-pivot universal joint is slidably connected to the upper end of the three-pivot universal joint.

[0010] Preferably, the tool holder assembly includes a hob, which is mounted on the coupling, and the coupling is connected to the reversing mechanism. Further, the tool holder assembly includes a hob holder, a hob, a Schmidt coupling, and a hob outer support. The Schmidt coupling is located below the first coupling, and the hob outer support is located below the Schmidt coupling. The Schmidt coupling is driveably connected to the first coupling and the hob holder. The hob outer support is slidably connected to the support base, and the hob is driveably connected to the hob outer support.

[0011] Preferably, the power unit includes a main drive motor, an auxiliary drive motor (i.e., a first auxiliary drive motor), a second auxiliary drive motor, a power supply and a microprocessor, a first bearing housing, a second bearing housing, a first pulley, a second pulley, a belt, a main coupling, a first connecting piece, a ball retainer, a lead screw, a transmission rod, a second auxiliary drive gear, a second auxiliary driven gear, a second connecting piece, and a third connecting piece. The main drive motor is fixedly connected to the ball retainer via the first connecting piece. The tool holder assembly is connected to the main drive motor via the main coupling. The ball retainer is connected to the lead screw in a driving manner. The lead screw is connected to the first bearing housing and the second bearing housing. The first bearing housing and the second bearing housing are fixedly connected to the base shell. The first pulley is fixedly connected to the lead screw. The second pulley is fixedly connected to the auxiliary drive motor. The auxiliary drive motor is fixedly connected to the base shell via the second connecting piece. The first pulley and the second pulley are connected in a driving manner via the belt. The second auxiliary drive motor is fixedly connected to the base shell via the third connecting piece. The second auxiliary drive motor is fixedly connected to the second auxiliary drive gear. The second auxiliary drive gear is drivingly connected to the second auxiliary driven gear. The transmission rod is fixedly connected to the second auxiliary driven gear and the first gear of the rotating mechanism. The transmission rod is slidably connected to the base shell and the first feeding mechanism. The power supply and microprocessor are fixedly connected to the support base.

[0012] Preferably, the combination of the active feed wheel, the first passive feed wheel, and the second passive feed wheel maintains the axial stability of the pencil during the cutting process.

[0013] The steps for using a fully automatic pencil sharpener that can change the shape of the pencil tip are as follows:

[0014] 1) Connect the power supply and turn on the pencil sharpener;

[0015] 2) Customize the shape, length, and thickness of the sharpened pencil on the touchscreen and save it for direct application next time;

[0016] 3) The rotating pen inserting mechanism is inserted through the top cover and the inlet tube. The first feeding mechanism spring and the second feeding mechanism spring are compressed. The first passive feeding wheel bracket guide rod and the second passive feeding wheel bracket guide rod contact the brush fastener. The circuit is connected, that is, the pen sharpener detects the insertion. If there is an insertion, proceed to step 4. If there is no insertion, continue to insert.

[0017] 4) The power unit causes the hob holder to rotate forward, which in turn drives the Schmidt coupling to rotate forward. The hob holder drives the hob to rotate, and the Schmidt coupling drives the driving bevel gear to rotate forward. The driving bevel gear drives the first planetary gear and the second planetary gear to rotate. The first planetary gear and the second planetary gear drive the driven bevel gear to rotate in reverse. The driven bevel gear drives the internal support of the feeding mechanism to rotate in reverse. The internal support of the feeding mechanism drives the first gear of the feeding mechanism to rotate. The first gear of the feeding mechanism drives the worm gear of the feeding mechanism to rotate. The worm gear of the feeding mechanism drives the worm wheel of the feeding mechanism to rotate. The worm wheel of the feeding mechanism drives the driving feeding wheel to rotate. The pencil is fed into the tool holder assembly in reverse.

[0018] 5) The power device causes the first gear of the rotating mechanism to rotate, the first gear of the rotating mechanism drives the second gear of the rotating mechanism to rotate, the second gear of the rotating mechanism drives the worm gear of the rotating mechanism to rotate, and the worm gear of the rotating mechanism drives the worm wheel of the rotating mechanism to rotate, thus rotating the external support of the feeding mechanism.

[0019] 6) The controllable rotation of the external support of the feeding mechanism and the controllable translation of the external support of the hob control the shape, length and thickness of the pencil being sharpened.

[0020] 7) After the pencil has been sharpened for a preset time, the power device reverses the hob holder, which in turn drives the Schmidt coupling to rotate in reverse. The hob holder drives the hob to rotate, and the Schmidt coupling drives the driving bevel gear to rotate in reverse. The driving bevel gear drives the first planetary gear and the second planetary gear to rotate. The first planetary gear and the second planetary gear drive the driven bevel gear to rotate forward. The driven bevel gear drives the internal support of the feeding mechanism to rotate forward. The internal support of the feeding mechanism drives the first gear of the feeding mechanism to rotate. The first gear of the feeding mechanism drives the worm gear of the feeding mechanism to rotate. The worm gear of the feeding mechanism drives the worm wheel of the feeding mechanism to rotate. The worm wheel of the feeding mechanism drives the driving feed wheel to rotate. The pencil is then fed out of the tool holder assembly in a forward rotation.

[0021] 8) Take out the pencil.

[0022] A method of using the aforementioned fully automatic pencil sharpener capable of changing the shape of the pencil tip includes the following steps:

[0023] 1) Insert the pencil into the rotating pencil insertion mechanism;

[0024] 2) The main drive motor makes the tool holder assembly rotate forward, the tool holder assembly drives the coupling to rotate forward, the tool holder assembly drives the hob to rotate, the coupling drives the planetary gear set of the reversing mechanism to drive the gear set of the internal support of the feeding mechanism, thereby driving the internal support of the feeding mechanism to rotate in reverse, so as to cut the pencil;

[0025] 3) The first auxiliary drive motor drives the external support of the feeding mechanism to rotate through the worm gear connection, and the external support of the feeding mechanism adjusts the cutting angle of the pencil; the second auxiliary drive motor adjusts the horizontal displacement of the tool holder assembly through the belt and ball screw, and adjusts the shape of the pencil tip.

[0026] The shape, length, and thickness of the sharpened pencil can be customized on the touchscreen of the casing. The touchscreen is primarily used for interactive operations to customize the shape, length, and thickness of the sharpened pencil. Specifically, an exemplary embodiment of this invention provides a display interface via the touchscreen, displaying a first sub-display area, a second sub-display area, a third sub-display area, and a fourth sub-display area within the display area. A schematic diagram of the interface shows that the first sub-display area includes rectangular controls, triangular controls, circular controls, and polygonal controls. The second sub-display area includes a first boundary and a second boundary. The third sub-display area includes a third boundary and a fourth boundary.

[0027] An interaction method is provided to offer a user an operable user interface and enable interactive operations between the user interface and the user. The interaction method includes:

[0028] The S910 displays the first sub-display area, the second sub-display area, and the third sub-display area within the display area.

[0029] In this step, the display area includes a first sub-display area, a second sub-display area, and a third sub-display area. The positions of the three sub-display areas are ergonomically designed to reduce user fatigue during operation. In other words, the positions of the three sub-display areas are easier for users to access and operate, and will not cause physical discomfort during operation.

[0030] S920 displays a first sub-display area, a second sub-display area, and a third sub-display area within the display area, wherein every two adjacent sub-display areas are perpendicular to each other, and the space formed by them constitutes the object display area;

[0031] In this step, the display area includes a first sub-display area, a second sub-display area, a third sub-display area, and an object display area composed of these. The position of the object display area conforms to the rules of human visual perception, which can improve the user's operating efficiency.

[0032] S930 detects a first touch action occurring within the first sub-display area to obtain the location where the first touch action occurred.

[0033] S940 determines the selectable object selected by the first touch action, namely, the pen tip shape controlled by a rectangular control, a triangle control, a circular control, or a polygon control.

[0034] S950 detects a second touch action occurring within the second sub-display area to obtain the location where the second touch action occurs. The location of the second touch action is between the first boundary and the second boundary.

[0035] S960 determines the second touch trajectory and the location where the second touch action occurs, and determines the selected pen tip length.

[0036] S970 detects a third touch action occurring within the third sub-display area to obtain the location where the third touch action occurs.

[0037] S980 determines the third touch trajectory and location of the third touch action, and determines the selected pen tip thickness.

[0038] The aforementioned steps allow the final pencil cutting effect to be displayed in the object display area, providing users with a clear view of the predicted pencil shape. In this embodiment, user interaction with the interactive device is conducted via touch; that is, the generated interactive interface is presented on a touchscreen display, allowing users to interact with the device through touch gestures on the display.

[0039] After the S990 completes the above steps, it displays the fourth sub-display area to allow the user to understand the pencil cutting progress.

[0040] The beneficial effects of this utility model are as follows:

[0041] 1. By employing the tightly controllable cooperation of the rotating pencil insertion mechanism, the fixed bracket, the reversing mechanism, the blade holder assembly, and the power device, fully automatic and efficient cutting of pencils with customizable shape, length, and thickness is achieved. This reduces the time spent cutting irregularly shaped pencils, increases the safety of the cutting process, and is beneficial to children's growth and the improvement of beginners' drawing skills.

[0042] 2. The use of a touchscreen-based visual system reduces the difficulty of using a pencil sharpener for the first time, and more intuitively demonstrates the pencil cutting process, increasing its fun. Attached Figure Description

[0043] Figure 1 This is a side-front perspective view of an embodiment of the present invention;

[0044] Figure 2 yes Figure 1 Side and rear view;

[0045] Figure 3 This is a three-dimensional structural diagram of a half-section of the outer shell provided in an embodiment of this utility model;

[0046] Figure 4 This is a three-dimensional structural diagram of the internal structure provided in an embodiment of this utility model;

[0047] Figure 5 This is a perspective structural diagram of the reversing mechanism gear sleeve with a quarter-section view provided in an embodiment of this utility model.

[0048] Figure 6 This is a side-front perspective view of the rotating pen-feeding mechanism of the external support of the feeding mechanism with a side-front view provided in an embodiment of this utility model.

[0049] Figure 7 This is a side-rear perspective three-dimensional structural diagram of the rotating pen-feeding mechanism with a half-section of the external support of the feeding mechanism and a side-rear view provided in an embodiment of this utility model.

[0050] Figure 8 This is a side-rear perspective view of the rotating pen-feeding mechanism with a trigger device and an external support of the feeding mechanism, provided by an embodiment of this utility model, showing a half-section from a side-rear perspective.

[0051] Figure 9 This is a side-rear perspective view of the structure with a power unit, provided by an embodiment of the present invention, showing a half-section from a side-rear perspective.

[0052] Figure 10 This is a side-front perspective view of the power unit provided by an embodiment of the present invention, showing a half-section.

[0053] Figure 11 This is a flowchart of an interface interaction method provided by an embodiment of this utility model;

[0054] Figure 12 This is a schematic diagram of an interface provided by an embodiment of the present utility model;

[0055] Figure 13 This is a schematic diagram of an interface provided by an embodiment of the present utility model;

[0056] In the diagram: 1_Touchscreen, 2_First housing, 3_Top cover, 4_Housing connecting ring, 5_Second housing, 6_Side wall connecting ring, 7_Side wall, 8_Base housing, 9_Rear wall connecting ring, 10_Rear wall, 11_Feeding mechanism external support, 12_Feeding mechanism internal support, 13_Inlet tube, 14_Rotating mechanism first gear, 15_First feeding mechanism support, 16_Reversing mechanism gear sleeve, 17_First coupling, 18_Schmidt coupling, 19_Hob outer support, 20_Support base, 21_Hob holder, 22_Hob, 23_Second feeding mechanism support, 24_Rotating mechanism worm gear, 25_Rotating mechanism second gear, 26_Rotating mechanism 27_First bushing of the internal support of the feeding mechanism, 28_First passive feeding wheel, 29_First gear of the feeding mechanism, 30_Worm of the feeding mechanism, 31_Passive feeding wheel support, 32_First passive feeding wheel shaft, 33_Second passive feeding wheel shaft, 34_Active feeding wheel shaft, 35_Active feeding wheel shaft sleeve, 36_Second bushing of the internal support of the feeding mechanism, 37_Worm gear of the feeding mechanism, 38_Active feeding wheel, 39_Counterweight of the feeding mechanism, 40_Second passive feeding wheel, 41_Spring of the first feeding mechanism, 42_Guide rod of the first passive feeding wheel support, 43_Guide rod of the second passive feeding wheel support, 44_Spring of the second feeding mechanism, 45_ Planetary gear coupling, 46_First planetary gear, 47_First bolt, 48_Lower end of three-pivot universal joint, 49_Upper end of three-pivot universal joint, 50_Inner collar of driving bevel gear, 51_Inner spring of driving bevel gear, 52_Second bolt, 53_Driving bevel gear, 54_Second planetary gear, 55_Passive bevel gear, 56_Display area, 57_Object display area, 58_First sub-display area, 59_Second sub-display area, 60_Third sub-display area, 61_Rectangular control, 62_Triangle control, 63_Circular control, 64_Polygon control, 65_First boundary, 66_Second boundary, 67_Third boundary, 68_The Four boundaries, 69_Fourth sub-display area, 70_Rotating mechanism worm gear shaft, 71_Feeding mechanism external support shaft, 72_Brush, 73_Brush fastener, 74_Electrified ring, 75_Main drive motor, 76_Auxiliary drive motor, 77_Second auxiliary drive motor, 78_Power supply and microprocessor, 79_First bearing housing, 80_Second bearing housing, 81_First pulley, 82_Second pulley, 83_Belt, 84_Main coupling, 85_First connecting piece, 86_Ball retainer, 87_Screw, 88_Transmission rod, 89_Second auxiliary drive gear, 90_Second auxiliary driven gear, 91_Second connecting piece, 92_Third connecting piece. Detailed Implementation

[0057] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0058] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0059] It should be noted that the terms "first" and "second" in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0060] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0061] It should be noted that, as used in this application, the terms “basically,” “approximately,” and similar terms are used as terms indicating approximation, not as terms indicating degree, and are intended to describe inherent deviations in measured or calculated values ​​that would be recognized by a person skilled in the art.

[0062] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, a contact connection, or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] like Figures 1 to 7As shown, this embodiment discloses a fully automatic pencil sharpener capable of changing the shape of the pencil tip, comprising: a housing providing structural support and protection for internal mechanical and electronic components; a rotating pencil-feeding mechanism located within the housing for automatically receiving and securing the pencil, ensuring precise positioning and rotation of the pencil; a fixing bracket connected to both sides of the rotating pencil-feeding mechanism to stabilize the entire mechanism and support the pencil's rotation on the correct axis; a reversing mechanism located below the fixing bracket, allowing the pencil to be sharpened at different angles to accommodate different shape requirements; a blade holder assembly mounted on the reversing mechanism, comprising multiple adjustable blades responsible for changing the shape of the pencil tip according to user-set parameters; and a power unit providing necessary power support for the rotating pencil-feeding mechanism, the reversing mechanism, and the blade holder assembly.

[0064] The outer casing includes: the touch screen 1, the first outer casing 2, the outer casing connecting ring 4, the second outer casing 5, the side wall connecting ring 6, the side wall 7, the rear wall connecting ring 9 and the rear wall 10 are fixedly connected; the top cover 3 is magnetically connected to the first outer casing 2, and the base shell 8 is snap-fit ​​connected to the second outer casing 5.

[0065] The rotating pen-feeding mechanism includes: an external support 11 for the feeding mechanism, an internal support 12 for the feeding mechanism, an inlet tube 13, a worm gear 24 for the rotating mechanism, a first bushing 27 for the internal support 27 for the feeding mechanism, a first passive feeding wheel 28, a first gear 29 for the feeding mechanism, a worm gear 30 for the feeding mechanism, a passive feeding wheel support 31, a first passive feeding wheel shaft 32, a second passive feeding wheel shaft 33, an active feeding wheel shaft 34, an active feeding wheel shaft bushing 35, a second bushing 36 for the internal support 36 for the feeding mechanism, a worm gear 37 for the feeding mechanism, an active feeding wheel 38, a counterweight for the feeding mechanism 39, a second passive feeding wheel 40, a spring 41 for the first feeding mechanism, a guide rod 42 for the first passive feeding wheel support, a guide rod 43 for the second passive feeding wheel support, a spring 44 for the second feeding mechanism, and a planetary gear coupling 45, a worm gear shaft 70 for the rotating mechanism, a shaft 71 for the external support 71 for the feeding mechanism, a brush 72, a brush fastener 73, and a receiving ring 74.The internal support 12 of the feeding mechanism is driven by the first bushing 27 and the second bushing 36 of the internal support 12 of the feeding mechanism, and is connected to the external support 11 of the feeding mechanism. The first passive feeding wheel support guide rod 42 and the second passive feeding wheel support guide rod 43 are fixedly connected to the passive feeding wheel support 31, and are slidably connected to the internal support 12 of the feeding mechanism. The first feeding mechanism spring 41 is sleeved on the first passive feeding wheel support guide rod 42, and the second feeding mechanism spring 44... The first passive feed wheel shaft 32 is fixedly connected to the first passive feed wheel 28, and the second passive feed wheel shaft 33 is fixedly connected to the second passive feed wheel 40. The first passive feed wheel shaft 32 and the second passive feed wheel shaft 33 are slidably connected to the passive feed wheel bracket 31 and to the internal bracket 12 of the feeding mechanism. The active feed wheel shaft 34 is fixedly connected to the active feed wheel 38, the worm gear 37 of the feeding mechanism, and the counterweight 39 of the feeding mechanism. The active feeding wheel shaft 34 is slidably connected to the internal support 12 of the feeding mechanism; the first gear 29 of the feeding mechanism is fixedly connected to the worm gear 30 of the feeding mechanism; the worm gear 30 of the feeding mechanism is slidably connected to the internal support 12 of the feeding mechanism; the worm gear 30 of the feeding mechanism is drively connected to the worm wheel 37 of the feeding mechanism; the first gear 29 of the feeding mechanism is drively connected to the external support 11 of the feeding mechanism; the inlet pipe 13 is fixedly connected to the external support 12 of the feeding mechanism; and the rotating mechanism worm wheel 26 is fixedly connected to the external support 11 of the feeding mechanism. 26 is slidably connected to the first feeding mechanism support 15 via the worm gear shaft 70 of the rotating mechanism, and the external support 11 of the feeding mechanism is slidably connected to the second feeding mechanism support 23 via the external support shaft 71 of the feeding mechanism. The brush fastener 73 is fixedly connected to the passive feeding wheel support 31, the brush 72 is fixedly connected to the brush fastener 73, the power receiving ring 74 is fixedly connected to the external support 11 of the feeding mechanism, the brush 72 is in sliding contact with the power receiving ring 74, and the power receiving ring 74 is fixedly connected to the worm gear shaft 70 of the rotating mechanism and the external support shaft 71 of the feeding mechanism.

[0066] The fixed bracket includes: a first feeding mechanism support 15, a second feeding mechanism support 23, a first rotating mechanism gear 14, a rotating mechanism worm 24, and a second rotating mechanism gear 25. The rotating mechanism worm 24 and the rotating mechanism second gear 25 are fixedly connected. The first feeding mechanism support 15 is slidably connected to the rotating mechanism first gear 14 and the rotating mechanism worm 24. The power device is electrically connected to the rotating mechanism first gear 14. The rotating mechanism first gear 14 is tractably connected to the rotating mechanism second gear 25. The rotating mechanism worm 24 is tractably connected to the rotating mechanism worm wheel 26. The support base 20 is fixedly connected to the first feeding mechanism support 15 and the second feeding mechanism 23.

[0067] The reversing mechanism includes: a reversing mechanism gear sleeve 16, a first coupling 17, a planetary gear coupling 45, a first planetary gear 46, a first bolt 47, a lower end of a three-pivot universal joint 48, an upper end of a three-pivot universal joint 49, an inner ring 50 of the driving bevel gear, an inner spring 51 of the driving bevel gear, a second bolt 52, a driving bevel gear 53, a second planetary gear 54, and a driven bevel gear 55. The reversing mechanism gear sleeve 16 is fixedly connected to the external support 11 of the feeding mechanism, the passive bevel gear 55 is fixedly connected to the internal support 12 of the feeding mechanism, the planetary gear coupling shaft 45 is slidably connected to the reversing mechanism gear sleeve 16, the first planetary gear 46 and the second planetary gear 54 are axially engaged with the planetary gear coupling shaft 45, the inner sleeve 50 of the active bevel gear is slidably connected to the active bevel gear 53, the inner spring 51 of the active bevel gear is sleeved on the inner sleeve 50 of the active bevel gear, the active bevel gear 53 is fixedly connected to the upper end 49 of the three-pivot universal joint, the first planetary gear 46 and the second planetary gear 54 are drively connected to the active bevel gear 53 and the passive bevel gear 55, the first coupling 17 is fixedly connected to the lower end 48 of the three-pivot universal joint through the first bolt 47 and the second bolt 52, and the lower end 49 of the three-pivot universal joint is slidably connected to the upper end 49 of the three-pivot universal joint.

[0068] The tool holder assembly includes: a hob holder 21, a hob 22, a Schmidt coupling 18, and a hob outer support 19. The Schmidt coupling 18 is located below the first coupling 17, and the hob outer support 19 is located below the Schmidt coupling 18. The Schmidt coupling 18 is driveably connected to the first coupling 17 and the hob holder 21. The hob outer support 19 is slidably connected to the support base 20, and the hob 22 is driveably connected to the hob outer support 19.

[0069] The power unit includes: a main drive motor 75, an auxiliary drive motor 76 (i.e., the first auxiliary drive motor), a second auxiliary drive motor 77, a power supply and microprocessor 78, a first bearing housing 79, a second bearing housing 80, a first pulley 81, a second pulley 82, a belt 83, a main coupling 84, a first connecting piece 85, a ball retainer 86, a lead screw 87, a transmission rod 88, a second auxiliary drive gear 89, a second auxiliary driven gear 90, a second connecting piece 91, and a third connecting piece 92. The main drive motor 75 is fixedly connected to the ball retainer 86 via the first connecting piece 85. The tool post assembly is connected to the main drive motor 75 via the main coupling 84. The ball retainer 86 is drively connected to the lead screw 87. The lead screw 87 is connected to the first bearing seat 79 and the second bearing seat 80. The first bearing seat 79 and the second bearing seat 80 are fixedly connected to the base shell 8. The first pulley 81 is fixedly connected to the lead screw 87. The second pulley 82 is fixedly connected to the auxiliary drive motor 76. The auxiliary drive motor 76 is fixedly connected to the base shell 8 via the second connection 91. The first pulley 81 and the second pulley 82 are connected by the belt 83. The second auxiliary drive motor 77 is fixedly connected to the base shell 8 through the third connecting piece 92. The second auxiliary drive motor 77 is fixedly connected to the second auxiliary drive gear 89. The second auxiliary drive gear 89 is connected to the second auxiliary driven gear 90. The transmission rod 88 is fixedly connected to the second auxiliary driven gear 90 and the first gear 14 of the rotating mechanism. The transmission rod 88 is slidably connected to the base shell 8 and the first feeding mechanism support 15. The power supply and microprocessor 78 are fixedly connected to the support base 20.

[0070] The steps for using a fully automatic pencil sharpener that can change the shape of the pencil tip are as follows:

[0071] 1) Connect the power supply and turn on the pencil sharpener;

[0072] 2) Customize the shape, length, and thickness of the sharpened pencil on the touchscreen and save it for direct application next time;

[0073] 3) The pencil is inserted into the rotating pencil insertion mechanism via the top cover 3 and the inlet tube 13. The pencil sharpener determines whether the pencil is inserted. The first feeding mechanism spring 41 and the second feeding mechanism spring 44 are compressed. The first passive feeding wheel bracket guide rod 42 and the second passive feeding wheel bracket guide rod 43 contact the brush fastener. The circuit is connected, that is, the pencil sharpener detects insertion. If there is insertion, proceed to step 4. If there is no insertion, continue to insert.

[0074] 4) The power unit causes the hob holder 21 to rotate clockwise, which in turn drives the Schmidt coupling 18 to rotate clockwise. The hob holder 21 drives the hob 22 to rotate, and the Schmidt coupling 18 drives the driving bevel gear 53 to rotate clockwise. The driving bevel gear 53 drives the first planetary gear 46 and the second planetary gear 54 to rotate. The first planetary gear 46 and the second planetary gear 54 drive the driven bevel gear 55 to rotate counterclockwise. The driven bevel gear 55 drives the internal support 12 of the feeding mechanism to rotate counterclockwise. The internal support 12 of the feeding mechanism drives the first gear 29 of the feeding mechanism to rotate. The first gear 29 of the feeding mechanism drives the worm gear 30 of the feeding mechanism to rotate. The worm gear 30 of the feeding mechanism drives the worm wheel 26 of the feeding mechanism to rotate. The worm wheel 26 of the feeding mechanism drives the driving feed wheel 38 to rotate. The pencil is fed into the tool holder assembly in the reverse direction.

[0075] 5) The power device causes the first gear 14 of the rotating mechanism to rotate, the first gear 14 of the rotating mechanism drives the second gear 25 of the rotating mechanism to rotate, the second gear 25 of the rotating mechanism drives the worm 24 of the rotating mechanism to rotate, the worm 24 of the rotating mechanism drives the worm wheel 26 of the rotating mechanism to rotate, and the external support 11 of the feeding mechanism rotates.

[0076] 6) The controllable rotation of the outer support 11 of the feeding mechanism and the controllable translation of the outer support 19 of the hob control the shape, length and thickness of the pencil being sharpened.

[0077] 7) After the pencil has been cut for a preset time, the power device causes the hob holder 21 to reverse, which in turn drives the Schmidt coupling 18 to reverse, which in turn drives the hob 22 to rotate. The Schmidt coupling 18 drives the driving bevel gear 53 to reverse, which in turn drives the first planetary gear 46 and the second planetary gear 54 to rotate. The first planetary gear 46 and the second planetary gear 54 drive the driven bevel gear 55 to rotate forward, which in turn drives the internal support 12 of the feeding mechanism to rotate forward. The internal support 12 of the feeding mechanism drives the first gear 29 of the feeding mechanism to rotate, which in turn drives the worm gear 30 of the feeding mechanism to rotate. The worm gear 30 of the feeding mechanism drives the worm wheel 26 of the feeding mechanism to rotate, which in turn drives the driving feed wheel 38 to rotate. The pencil is then fed out of the tool holder assembly in a forward rotation.

[0078] 8) Take out the pencil.

[0079] The touchscreen 1 is mainly used to perform interactive operations to customize the shape, length, and thickness of the sharpened pencil. Specifically, an exemplary embodiment of this disclosure provides a display interface through the touchscreen 1, and displays a first sub-display area 58, a second sub-display area 59, a third sub-display area 60, and a fourth sub-display area 69 in the display area 56.

[0080] For example, such as Figure 9 As shown, Figure 9The schematic diagram illustrates an interface provided by an embodiment of the present invention. The first sub-display area 58 includes a rectangular control 61, a triangular control 62, a circular control 63, and a polygonal control 64. The second sub-display area 59 includes a first boundary 65 and a second boundary 66. The third sub-display area 60 includes a third boundary 67 and a fourth boundary 68.

[0081] Please see Figure 8 This utility model provides an interaction method 900, which is used to provide a user interface to a user and realize interactive operations between the user interface and the user. The interaction method 900 includes:

[0082] The S910 displays the first sub-display area 58, the second sub-display area 59, and the third sub-display area 60 within the display area 56.

[0083] In this step, the display area 56 includes a first sub-display area 58, a second sub-display area 59, and a third sub-display area 60. The positions of the three sub-display areas are ergonomically designed to reduce user fatigue during operation. In other words, the positions of the three sub-display areas are easier for users to access and operate, and will not cause discomfort to the user's limbs during operation.

[0084] S920 displays a first sub-display area 58, a second sub-display area 59, and a third sub-display area 60 within the display area 56, wherein every two adjacent sub-display areas are perpendicular to each other, and the space formed thereby constitutes the object display area 57.

[0085] In this step, the display area 56 includes a first sub-display area 58, a second sub-display area 59, a third sub-display area 60, and an object display area 57 composed of these. The position of the object display area 57 conforms to the rules of human visual perception, which can improve the user's operating efficiency.

[0086] S930 detects a first touch action occurring within the first sub-display area 58 to obtain the location where the first touch action occurred.

[0087] S940 determines the selectable object selected by the first touch action, namely, the pen tip shape controlled by the rectangular control 61, the triangle control 62, the circular control 63, or the polygon control 64.

[0088] S950 detects a second touch action occurring within the second sub-display area 59 to obtain the location of the second touch action. The location of the second touch action is between the first boundary 65 and the second boundary 66.

[0089] S960 determines the second touch trajectory and the location where the second touch action occurs, and determines the selected pen tip length.

[0090] S970 detects a third touch action occurring within the third sub-display area 60 to obtain the location where the third touch action occurs.

[0091] S980 determines the third touch trajectory and location of the third touch action, and determines the selected pen tip thickness.

[0092] The final pencil cutting effect can be displayed in the object display area 57 through the aforementioned steps, allowing users to intuitively obtain the predicted pencil cutting result. In this embodiment, the interaction between the user and the interactive device is conducted via touch. That is, the generated interactive interface is presented on a touch screen, and the user can interact with the interactive device through touch actions on the touch screen.

[0093] After the S990 completes the above steps, it displays the fourth sub-display area 69 to allow the user to understand the pencil cutting progress.

[0094] The basic principles, main features, and advantages of this utility model have been described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fully automatic pencil sharpener capable of changing the shape of the pencil tip, characterized in that, Including: shell; A rotating pencil-feeding mechanism, located inside the housing, is used to automatically receive and fix the pencil, ensuring the positioning and rotation of the pencil. The rotating pencil-feeding mechanism includes: an external support for the feeding mechanism and an internal support for the feeding mechanism that rotates with the external support for the feeding mechanism. A reversing mechanism is located at the output end of the bracket inside the feeding mechanism; The tool holder assembly is mounted on the reversing mechanism via a coupling; The power unit includes: a main drive motor for driving the tool holder assembly to rotate, a first auxiliary drive motor for driving the external support of the feeding mechanism to rotate, and a second auxiliary drive motor for driving the tool holder assembly to slide.

2. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The feeding mechanism has a gear set installed inside the bracket, and the gear set has a clamping mechanism for holding the pen barrel.

3. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The external support of the feeding mechanism and the first auxiliary drive motor are connected by a worm gear.

4. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The tool holder assembly and the second auxiliary drive motor are connected by a belt and a ball screw.

5. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The axis of the external support of the feeding mechanism forms an angle of 0.0 to 10.0 degrees with the axis of the internal support of the feeding mechanism.

6. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The tool holder assembly has a horizontal displacement of 0.0 to 13.0 mm in the same direction.

7. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The reversing mechanism includes a planetary gear set.

8. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The tool holder assembly includes a hob, which is mounted on the coupling, and the coupling is connected to the reversing mechanism.

9. The fully automatic pencil sharpener capable of changing the shape of the pencil tip according to claim 1, characterized in that, The main drive motor, the first auxiliary drive motor, and the second auxiliary drive motor are connected to the microprocessor, the microprocessor is connected to the touch screen, and the touch screen is mounted on the housing.

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