Full-automatic pencil sharpener

Abstract

The utility model belongs to the technical field of full-automatic pencil sharpeners, and particularly relates to a full-automatic pencil sharpener, which comprises a pencil advancing and retreating mechanism, a knife rest component, a cutting transmission mechanism, a PCB (printed circuit board) control module and a brake mechanism. The PCB control module is provided with a pen feeding and retreating mechanism brake switch and a cutting motor starting switch, and the starting ejector rod abuts against the cutting motor starting switch to start the cutting motor; a PCB (Printed Circuit Board) control module, a cutting motor and a brake motor are arranged on the lower sides of the pen feeding and retracting mechanism brake triggering piece and the starting ejector rod; the pencil sharpening device solves the problem that a pencil is broken when the full-automatic pencil sharpener sharpens the pencil, the pencil sharpening function is achieved through the pencil feeding mechanism and the braking mechanism, the pencil does not move downwards any more, the pencil point is not broken, the pencil sharpening function of the pencil sharpener is better achieved, the smoothness of the sharpening portion of the pencil is improved, the customer satisfaction degree is improved, and the service life of the pencil sharpener is prolonged. The full-automatic pencil sharpener is suitable for an existing full-automatic pencil sharpener, and the pencil sharpening function is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to pencil sharpener technical field, specifically is a full -automatic pencil sharpener. BACKGROUND

[0002] Full -automatic pencil sharpener knife in the process of cutting pencil, when the pencil reaches the requirement pencil tip, start the automatic light pencil function of pencil sharpener, the existing pencil sharpener will drive the pencil to go down again when the knife rest rotates, cut again, and the pencil tip will break lead, so we propose a full -automatic pencil sharpener to solve the above problems. UTILITY MODEL CONTENTS

[0003] In view of above and / or the problems existing in prior art full -automatic pencil sharpener, the utility model is provided, and the above problems can be solved.

[0004] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0005] A full -automatic pencil sharpener, including go -in and -out pencil mechanism, knife rest assembly, cutting transmission mechanism, PCB control module and brake mechanism, the go -in and -out pencil mechanism below is equipped with knife rest assembly, the knife rest assembly below is equipped with cutting transmission mechanism, the cutting transmission mechanism is equipped with go -in and -out pencil mechanism brake trigger and starting jacks, the PCB control module is equipped with go -in and -out pencil mechanism brake switch, cutting motor starting switch, the starting jacks abuts cutting motor starting switch and starts cutting motor;Go -in and -out pencil mechanism brake trigger and the lower side of starting jacks are equipped with PCB control module, cutting motor and brake motor;

[0006] Starting jacks start cutting motor by the abutment of pencil insertion go -in and -out pencil mechanism and PCB control module, cutting motor, cutting transmission mechanism, knife rest assembly and go -in and -out pencil mechanism are sequentially connected, so that the pencil automatically enters cutting;

[0007] Go -in and -out pencil mechanism brake trigger abuts PCB control module in the pencil continues to enter the knife rest assembly, and PCB control module starts brake motor, and brake motor, screw gear, brake mechanism, go -in and -out pencil mechanism are sequentially connected, so that go -in and -out pencil mechanism is braked.

[0008] Further, the brake mechanism includes brake sliding rack, brake jacks and screw gear, the screw gear is connected with the gear on brake motor, the brake jacks are arranged on the screw gear, and the brake jacks are lifted and lowered by the gear transmission of the screw gear and brake motor to be combined with or separated from the brake sliding rack;The brake sliding rack is provided with springs on both sides.

[0009] Further, the advancing and retreating pen mechanism comprises two rotating shafts, two support rubber rollers for clamping and advancing the pen are arranged on the two rotating shafts respectively, support gears are arranged on the two rotating shafts respectively, the two support gears are engaged with a support gear disc, two fixed gears are arranged on the two rotating shafts respectively, the two fixed gears are engaged with a brake sliding gear, and the brake sliding gear is engaged with the two fixed gears by the driving of a brake motor, so that the advancing and retreating pen mechanism is braked.

[0010] Further, an inner thread is arranged in the screw gear, the brake top rod is provided with an outer thread, the inner thread is H1 in height, the brake sliding gear and the brake top rod are separated by a distance H2 in height, and H1≤H2.

[0011] The brake motor drives the screw gear to ascend and descend the brake top rod under the cooperation of the inner thread and the outer thread, so that the brake sliding gear ascends and descends.

[0012] Further, the advancing and retreating pen mechanism brake trigger comprises a pen tip top rod and a pen tip support connected with each other, the pen tip top rod abuts against a pen tip touch switch to start the brake motor, a cutting cavity is arranged in the knife holder assembly, and the pen tip support is arranged in the cutting cavity.

[0013] A chip is arranged on the PCB control module, and the chip is connected with the cutting motor and the brake motor in circuit respectively.

[0014] Compared with the prior art, the full-automatic pencil sharpener of the utility model has the advantages that the problem of broken pencil during pencil sharpening is solved, the pencil does not go down and the pencil tip is not broken when the light pencil function is realized by the advancing and retreating pen mechanism and the brake mechanism, the light pencil function of the pencil sharpener is better realized, the smoothness of the cutting part of the pencil is improved, and the customer satisfaction is improved.

[0015] The utility model is suitable for the existing full-automatic pencil sharpener, and optimizes the light pencil function. BRIEF DESCRIPTION OF DRAWINGS

[0016] The structure of the utility model is shown in

[0017] ; Figure 1 Figure One The structure of the utility model is shown in

[0018] ; Figure 2 Figure 1 The structure of the utility model is shown in

[0019] ; Figure 3 Figure Two The structure of the utility model is shown in

[0020] ; Figure 4 Figure Three

[0021] Figure 5 ​The structure schematic view of the advancing and retreating pen mechanism in the utility model;

[0022] Figure 6 The structure schematic view of the PCB control module in the utility model;

[0023] Figure 7 The structure schematic view of the brake top rod in the utility model;

[0024] Figure 8 The structure schematic view of the transmission shaft in the advancing and retreating pen mechanism in the utility model;

[0025] Figure 9 The structure schematic view of the cutting transmission mechanism in the utility model;

[0026] Figure 10 The structure schematic view of the pen tip support in the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the attached drawings to make the detailed description. Figures 1-10 The embodiment of the utility model will be described further.

[0028] The utility model provides a kind of full-automatic pencil sharpener, its purpose is to solve the better realization of pencil sharpener light pencil function when full-automatic pencil sharpener is cut, prevent broken pen tip condition occurs, improve the finish of pencil cutting part, improve customer satisfaction.

[0029] According to one embodiment, the full-automatic pencil sharpener includes advancing and retreating pen mechanism 1, tool holder assembly 5, cutting transmission mechanism 17, PCB control module 18 and brake mechanism, in connection mode, advancing and retreating pen mechanism 1 is connected tool holder assembly 5 below, tool holder assembly 5 includes hob holder body 51 and with the oblique hob 52 of hob holder body 51, pen is cut into the cutting cavity 53 of the middle part of hob holder body 51 from advancing and retreating pen mechanism 1 by the surrounding cutting of hob 52, oblique hob 52 makes pen end part be cut into conical shape, the start of cutting is as follows:

[0030] The advancing and retreating pen mechanism 1 includes two rotating shafts 3, two rotating shafts 3 are respectively provided with two support rubber rollers 10 for pen clamping and entering under relative rotation friction force, two support rubber rollers 10 are respectively provided with support gear 2 located at both sides, friction force adjusting block 23 is closely arranged with two support gear 2, for adjusting the friction force of this assembly, two support gear 2 is engaged with support gear disc 4, as long as support gear disc 4 rotates, it can drive two support gear 2 and thus drive two support rubber rollers 10 relative rotation, whereby support gear disc 4 is connected with tool holder assembly 5, tool holder assembly 5 is connected with cutting transmission mechanism 17 below, cutting transmission mechanism 17 is connected with starting top rod 8 above, the starting top rod 8 is provided with cutting motor starting switch 9 below;Figure 1 Figure 2 For example, the state of the pen from the two support rubber rollers 10 between the pen mechanism 1 is inserted, the knife holder assembly 5 will move down, the part of the knife holder assembly 5 moving down please refer to the utility model patent name for a large pen clip pen mechanism, the authorized announcement number is CN222080439U content, so the downward movement of the knife holder assembly 5, the starting top rod 8 is in contact with the cutting motor starting switch 9, and the cutting motor 19 is started; the cutting motor 19 is driven by the cutting transmission mechanism 17, the cutting transmission mechanism 17 is a gear module composed of gears with different diameters, the cutting transmission mechanism 1 drives the knife holder assembly 5 and the support gear disc 4, so that the pen is clamped and rotated downward into the cutting cavity 53 while the rolling cutter 52 cuts around the pen.

[0031] When the pen enters the cutting cavity 53, the rolling cutter 52 cuts around the pen, which may cause the pen to break. Therefore, the pen needs to stop in the cutting cavity 53 when it reaches a certain depth, and then cutting is performed again, so as not to break the pen. Some embodiments are as follows:

[0032] A pen mechanism brake trigger is provided on the gear module 17, which extends partially into the cutting cavity 53 and partially extends outside the cutting cavity 53 below the gear module 17. The pen mechanism brake trigger and the lower side of the starting top rod 8 are provided with a PCB control module 18, a cutting motor 19 and a brake motor 15. The PCB control module 18 is provided with a pen mechanism brake switch 7 and a cutting motor starting switch 9. When the cutting transmission mechanism 1 moves downward, the pen mechanism brake trigger abuts against the pen mechanism brake switch 7, thereby starting the brake motor 15. The brake motor 15, the threaded gear 14, the brake mechanism and the pen mechanism 1 are connected in sequence, thereby braking the pen mechanism 1.

[0033] In further embodiments, the two rotating shafts 3 of the pen mechanism 1 are respectively provided with fixed gears 11 located at the same side of the outer end. The brake mechanism includes a brake sliding rack 12, and the brake sliding rack 12 is provided with a spring 16 on both sides. When the brake sliding rack 12 is movable, the brake top rod 13 is lifted and lowered by the gear transmission of the threaded gear 14 and the gear of the brake motor 15, so as to be combined with or separated from the brake sliding rack 12. Figure 3 In the arrangement mode in the above, the brake sliding rack 12 moves up and down, the brake motor 15 drives the threaded gear 14 to move upward, the threaded gear 14 drives the brake sliding rack 12 of the brake mechanism to move upward, and when the brake sliding rack 12 is meshed with the fixed gear 11, the pen mechanism 1 is braked.

[0034] In further some embodiments, the brake mechanism is split type, including brake jack 13, the screw gear 14 is provided with internal thread, the brake jack 13 is provided with external thread, the brake jack 13 is installed on the screw gear 14 by internal thread and external thread cooperation, its movement process is that brake motor 15 drives screw gear 14, screw gear 14 drives brake jack 13 through internal thread structure, brake jack 13 moves upwards to screw gear 14 and contacts brake sliding rack 12 after screwing off, drives brake sliding rack 12 to move upwards together, makes brake sliding rack 12 engage with fixed gear 11, prevents two rotating shafts 3 from rotating again, plays a brake's role, makes pencil not move downwards again.

[0035] In further some embodiments, the internal thread is in height direction height H1, the brake sliding rack 12 and the brake jack 13 are separated in height direction distance H2, and H1≤H2, the height setting guarantees that the brake sliding rack 12 engages with the fixed gear 11, and the brake motor 15 drives the screw gear 14 to drive the brake jack 13 to ascend and descend to make the brake sliding rack 12 ascend and descend under the cooperation of the internal thread and the external thread.

[0036] In some embodiments, the advance and retreat pencil mechanism brake trigger includes connected pencil tip jack 6 and pencil tip support 21, and the pencil tip support 21 is installed in the cutting cavity 53; in the case that the cutting angle of the hob 52 is constant, the cutting thickness of the pencil tip is determined by the installation of the pencil tip support 21 in the cutting cavity 53; when the pencil tip support 21 is low, the pencil tip is thin and long when contacting the pencil tip support 21, which may cause the pencil tip to break, so sufficient allowance is left in design to prevent the pencil tip from being thin and long, and the light pencil action is performed after braking to achieve better light pencil function of the pencil sharpener, improve the smoothness of the cutting part and customer satisfaction.

[0037] In some embodiments, in order to better control the light pencil and the smoothness of the cutting part, the chip 20 is provided on the PCB control module 18, the chip 20 is connected with the cutting motor 19 and the brake motor 15 respectively, the chip 20 starts to calculate time when the advance and retreat pencil mechanism brake switch 7 starts to brake the advance and retreat pencil mechanism 1, and the chip 20 controls the cutting motor 19 and the brake motor 15 to reverse after the light pencil action is completed, the brake motor 15 drives the screw gear 14 to reverse, the screw gear 14 reverses the brake jack 13 to move downwards, the brake sliding rack 12 moves downwards to reset under the action of the spring 16 and disengages from the engagement with the fixed gear 11, which plays a role of releasing the brake, and this is the action of automatic pencil retreat, and the pencil retreat time is also calculated.

[0038] The utility model realizes full automation when the pencil touches the starting jack 8, is simple and convenient, and the pencil tip is not easy to break, and the smoothness of the cutting part is improved.

[0039] Although the utility model has been described above with reference to the embodiments, various modifications can be made to it and equivalent components can be substituted for those therein without departing from the scope of the utility model. In particular, each of the features disclosed in the embodiments of the utility model can be used in combination with any other feature in any way, provided that there is no structural conflict. The combinations of these features are not exhaustively described in the specification merely for the sake of brevity and resource conservation. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fully automatic pencil sharpener characterized by: The application relates to a full-automatic pencil sharpener, which comprises a forward-and-backward pencil mechanism, a cutter holder assembly, a cutting transmission mechanism, a PCB control module and a brake mechanism, the forward-and-backward pencil mechanism is arranged below the cutter holder assembly, the cutter holder assembly is arranged below the cutting transmission mechanism, the cutting transmission mechanism is provided with a forward-and-backward pencil mechanism brake trigger and a starting top rod, the PCB control module is provided with a forward-and-backward pencil mechanism brake switch and a cutting motor starting switch, the starting top rod abuts against the cutting motor starting switch to start the cutting motor; the forward-and-backward pencil mechanism brake trigger and the starting top rod are provided with the PCB control module, the cutting motor and the brake motor on the lower side. The starting top rod starts the cutting motor by abutting against the PCB control module when the starting top rod is inserted into the forward-and-backward pencil mechanism, the cutting motor, the cutting transmission mechanism, the cutter holder assembly and the forward-and-backward pencil mechanism are sequentially connected, so that the pencil automatically enters the cutting state. The forward-and-backward pencil mechanism brake trigger abuts against the PCB control module when the pencil continuously enters the cutter holder assembly, the PCB control module starts the brake motor, the brake motor, the screw gear, the brake mechanism and the forward-and-backward pencil mechanism are sequentially connected, so that the forward-and-backward pencil mechanism is braked.

2. A fully automatic pencil sharpener according to claim 1, characterized in that: The brake mechanism comprises a brake sliding rack, a brake top rod and a screw gear, the screw gear is connected with a gear on the brake motor, the brake top rod is arranged on the screw gear, the brake top rod is lifted and lowered through the gear transmission of the screw gear and the brake motor, and then the brake top rod is combined with or separated from the brake sliding rack; the brake sliding rack is provided with springs on the two sides.

3. A fully automatic pencil sharpener according to claim 2, characterized in that: The forward-and-backward pencil mechanism comprises two rotating shafts, the two rotating shafts are respectively provided with two support rubber rollers for clamping and discharging the pencil, the two rotating shafts are respectively provided with support gears, the two support gears are engaged with a support gear disc, the two rotating shafts are respectively provided with two fixed gears, the two fixed gears are engaged with the brake sliding rack, the brake motor drives the brake sliding rack to engage with the two fixed gears, so that the forward-and-backward pencil mechanism is braked.

4. A fully automatic pencil sharpener according to claim 2, characterized in that: The screw gear is internally provided with an internal thread, the brake top rod is provided with an external thread, the internal thread is H1 in the height direction, the brake sliding rack and the brake top rod are separated by a distance H2 in the height direction, and H1<=H2; The brake motor drives the screw gear to lift and lower the brake top rod through the cooperation of the internal thread and the external thread, so that the brake sliding rack is lifted and lowered.

5. The full-automatic pencil sharpener according to claim 1, wherein: The forward-and-backward pencil mechanism brake trigger comprises a pencil tip top rod and a pencil tip support which are connected, the pencil tip top rod abuts against a pencil tip touch switch to start the brake motor, the cutter holder assembly is internally provided with a cutting cavity, and the cutting cavity is internally provided with the pencil tip support; The PCB control module is provided with a chip, and the chip is connected with the cutting motor and the brake motor circuit respectively.

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