CN217917413U

CN217917413U - Pencil sharpener capable of automatically advancing and retreating pencil

Info

Publication number: CN217917413U
Application number: CN202221849542.2U
Authority: CN
Inventors: 郑高伟; 李兵
Original assignee: Ningbo Tiantian Stationery Co ltd
Current assignee: Ningbo Tiantian Stationery Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-29
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses an automatic advance and move back penknife of pen, which comprises a body, the body includes first drive unit, second drive unit, advances and moves back a mechanism and cutting mechanism, first drive unit pass through drive mechanism with cutting mechanism connects, is used for the drive cutting mechanism has enough to meet the need for waiting to cut the pencil, the second drive unit with advance and move back a mechanism transmission and connect, be used for the drive advance and move back a mechanism drive and wait to cut the pencil upwards or move down. The utility model provides an automatic advance and move back penknife of pen, it is used for the drive to advance through increasing the second drive unit who moves back a mechanism on the penknife body, and the cutting action with advance a action mutually noninterfere, the pencil stops to advance a pen and will be difficult for producing disconnected point in the time delay cutting in-process pencil.

Description

Pencil sharpener capable of automatically advancing and retreating pencil

Technical Field

The utility model relates to a penknife technical field, more specifically say, relate to an automatic advance and retreat penknife of pen.

Background

The existing pencil sharpener with the automatic pencil advancing and retracting function is mostly provided with a single motor, the motor drives a tool rest assembly to rotate through a speed reducing mechanism, the tool rest assembly drives two rubber wheels in a pencil advancing assembly to rotate through a transmission mechanism in the rotating process, and the rotation directions of the two rubber wheels are opposite to drive a pencil to advance or discharge. For example, in the chinese patent publication No. CN107139624A, an electric pencil sharpener is disclosed, which comprises a power unit, wherein the power unit is connected with two rotatable rubber wheels through a transmission mechanism; the two rubber wheels are positioned at two sides of the pencil to be cut, have opposite rotation directions and are tightly attached to the side wall of the pencil to be cut so as to push the pencil to be cut upwards or downwards to move; the distance between the two rubber wheels is adjustable; the pencil sharpener further comprises a rotatable tool rest assembly which is positioned below the rubber wheel and used for sharpening the pencil to be sharpened.

In the above patent scheme, only one power device is adopted to synchronously drive the rubber wheel and the tool rest assembly, so that the cutting action and the pen feeding action are simultaneously carried out. After the pencil sharpener cuts the approximate contour of the pencil point, the tool rest has delayed cutting for cutting the surface of the pencil point to be smooth. In the delayed cutting process, the rubber wheel drives the pencil to continuously enter under the driving of the tool rest assembly, and the processed pencil point is abutted against the pencil blocking block to easily generate a broken point.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an automatic advance and move back penknife of pen, it is used for the drive to advance through increasing on the penknife body and moves back the second drive unit of a mechanism, and the cutting action and the action of advancing do not mutually interfere, and the pencil stops to advance the pen and will be difficult for producing disconnected point in the cutting process of delaying.

The utility model adopts the technical proposal that: the utility model provides an automatic advance and retreat penknife, including the body, the body includes first drive unit, second drive unit, advances and retreats a mechanism and cutting mechanism, first drive unit pass through drive mechanism with cutting mechanism connects for the drive cutting mechanism has enough to meet the need for cutting the pencil turnover, the second drive unit with advance and retreat a mechanism transmission and connect for the drive advance and retreat a mechanism and drive and wait to cut the pencil and upwards or move down.

After the structure is adopted, the first driving unit and the second driving unit are relatively independently arranged, and the first driving unit drives the cutting mechanism to do cutting action relative to the pencil to be cut; the second driving unit drives the pencil advancing and retreating mechanism to drive the pencil to be cut to perform pencil advancing/retreating actions, the cutting action and the pencil advancing action run independently, and the second driving unit stops pencil advancing in advance in the process of cutting a thinner pencil point so as to avoid tip breaking.

According to an embodiment of the present invention, the pen feeding and retracting mechanism comprises two spaced pen clamping assemblies, the two pen clamping assemblies are in transmission connection, one of the pen clamping assemblies rotates around its axis to drive the other pen clamping assembly to synchronously rotate reversely; a clamping gap for clamping the pencil to be cut exists between the two pencil clamping assemblies, and the two pencil clamping assemblies are tightly attached to two sides of the pencil respectively and rotate oppositely, so that the pencil to be cut is pushed to enter the pencil vertically.

According to one embodiment of the utility model, each pen clamping component is coaxially provided with a transmission gear, and the two transmission gears are mutually meshed to realize the transmission connection of the two pen clamping components; the two transmission gears are meshed and connected to realize transmission between the two pen clamping assemblies, so that when one pen clamping assembly rotates, the other pen clamping assembly rotates reversely.

According to the utility model discloses an embodiment, the second drive unit has the output of rotating around an axis, install the worm on the output, one of them the clip pen subassembly go up the coaxial turbine that is equipped with the worm meshing is connected.

According to the utility model discloses an embodiment, advance and retreat a mechanism and still include the carousel that a level set up, every press from both sides and have gear portion on the pen subassembly, through gear portion with the carousel meshing is connected and is realized two the transmission of pressing from both sides the pen subassembly is connected.

According to the utility model discloses an embodiment, the worm is installed to second drive unit's output, the worm with the carousel meshing is connected and is used for the drive the carousel turnover drives two press from both sides a synchronous rotation of subassembly.

According to an embodiment of the invention, the second drive unit is a horizontally arranged motor.

According to the utility model discloses an embodiment, first drive unit's rotatory output is equipped with output gear, drive mechanism is including reduction gear set, output gear with a gear engagement among the reduction gear set is connected, another gear among the reduction gear set with cutting mechanism coaxial coupling.

According to the utility model discloses an embodiment, the body still includes the battery, the battery respectively with first drive unit with the second drive unit electricity is connected.

According to the utility model discloses an embodiment, cutting mechanism is including the knife rest and install the hobbing cutter on the knife rest.

Drawings

FIG. 1 is a schematic structural view of a pencil sharpener according to an embodiment of the present invention;

FIG. 2 is a side view of a pencil sharpener according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partial exploded view of the pencil sharpener of the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

fig. 6 is a partial structure diagram of the pencil sharpener of the present invention.

The numbering in the figures illustrates:

1. a body; 2. an upper cover; 3. a first drive unit; 4. a transmission mechanism; 5. a second driving unit; 6. a pen advancing and retreating mechanism; 7. a cutting mechanism; 8. a battery;

31. an output gear;

41. a reduction gear set;

51. a worm;

61. a pen clamping assembly; 62. a transmission gear; 63. a turbine.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 and fig. 2, the present embodiment provides an automatic pencil sharpener that advances and retreats, which includes a main body 1, where the main body 1 includes a first driving unit 3, a second driving unit 5, a pencil advancing and retreating mechanism 6 and a cutting mechanism 7, the first driving unit 3 is connected to the cutting mechanism 7 through a transmission mechanism 4, and is configured to drive the cutting mechanism 7 to rotate around a pencil to be sharpened, and the second driving unit 5 is connected to the pencil advancing and retreating mechanism 6 in a transmission manner, and is configured to drive the pencil advancing and retreating mechanism 6 to drive the pencil to be sharpened to move upward or downward.

Further, as shown in fig. 3, in this embodiment, the pencil sharpener includes a main body 1 and an upper cover 2, a waste chip cavity is formed on the main body 1, the cutting mechanism 7 is located in the waste chip cavity, and the first driving unit 3, the second driving unit 5, the pencil advancing and retracting mechanism 6 and the transmission mechanism 4 are all located inside a casing of the main body 1, so as to avoid exposure thereof. The upper cover 2 is detachably connected with the body 1 and is used for covering and sealing the waste chip cavity.

Furthermore, a pencil feeding hole penetrates through the center of the upper cover 2, a pencil to be cut extends into the pencil feeding and withdrawing mechanism 6 through the pencil feeding hole, then the second driving unit 5 drives the pencil feeding and withdrawing mechanism 6 to drive the pencil to be fed, then the first driving unit 3 drives the cutting mechanism 7 to cut the pencil which moves downwards, and the waste chip cavity is used for temporarily storing cut waste chips.

Furthermore, in the present embodiment, the cutting mechanism 7 is provided with a pen stopping block, and the thickness of the pen point is adjusted by adjusting the position of the pen stopping block relative to the tool rest. The second driving unit 5 drives the pencil to move downwards until the pencil is abutted against the pencil blocking block, and the pencil feeding and withdrawing mechanism 6 stops pencil feeding. After the cutting mechanism 7 synchronously cuts out the approximate contour of a pen point along with the feeding of the pencil under the driving of the first driving unit 3, the feeding of the pencil is stopped to enter a delayed cutting process, the first driving unit 3 continues to drive the cutting mechanism 7 to operate, the surface of the pencil lead is cut smoothly, the cutting mechanism 7 stops cutting after the processing is finished, and the second driving unit 5 drives the pencil feeding and withdrawing mechanism 6 to withdraw the pencil.

Specifically, the cutting mechanism 7 comprises a tool holder and a hob mounted on the tool holder.

Specifically, as shown in fig. 4 and 5, the advancing and retreating mechanism 6 includes two pen clamping assemblies 61 arranged at intervals, the two pen clamping assemblies 61 are in transmission connection, one of the pen clamping assemblies 61 rotates around its axis to drive the other pen clamping assembly 61 to synchronously rotate in the opposite direction.

Further, in this embodiment, two pencil clamping assemblies 61 are all rotatably installed on the body 1, and the pencil clamping assemblies 61 are provided with rubber rollers adapted to the surface profile of the pencil, and the two rubber rollers form a clamping profile for clamping the pencil to be cut, and the two pencil clamping assemblies 61 are respectively tightly attached to two sides of the pencil and rotate in opposite directions, so as to push the pencil to be cut up and down to advance.

Specifically, as shown in fig. 5, in this embodiment, a transmission gear 62 is coaxially disposed on each of the pen clamping assemblies 61, and the two transmission gears 62 are engaged with each other to realize transmission connection between the two pen clamping assemblies 61.

Further, the two transmission gears 62 are meshed and connected to realize transmission between the two pen clamping assemblies 61, so that when one of the pen clamping assemblies 61 rotates, the other pen clamping assembly 61 rotates reversely.

Specifically, the second driving unit 5 has an output end rotating around an axis, the output end is provided with a worm 51, and a worm wheel 63 meshed with the worm 51 is coaxially arranged on one of the pen clamping assemblies 61.

Further, the second driving unit 5 drives the worm 51 to rotate, the worm 51 drives the worm wheel 63 to rotate, the pencil clamping assembly 61 rotates coaxially with the rotation of the worm wheel 63, and the other pencil clamping assembly 61 rotates in the opposite direction through the transmission of the transmission gear 62 to drive the pencil to advance.

Specifically, in another embodiment, the advancing and retreating pen mechanism 6 further includes a horizontally disposed turntable, each of the pen clamping assemblies 61 has a gear portion thereon, and the two pen clamping assemblies 61 are in transmission connection through the gear portion and the turntable in meshing connection.

Further, in another embodiment, the output end of the second driving unit 5 is provided with a worm 51, and the worm 51 is in meshed connection with the rotary table for driving the rotary table to rotate so as to drive the two pen clamping assemblies 61 to rotate synchronously.

Specifically, the second driving unit 5 is a horizontally disposed motor in the present embodiment.

Specifically, referring to fig. 6, in the present embodiment, the first driving unit 3 is a vertically disposed motor, a rotation output end of the motor is provided with an output gear 31, the transmission mechanism 4 includes a reduction gear set 41, the output gear 31 is in meshing connection with one gear of the reduction gear set 41, and another gear of the reduction gear set 41 is coaxially connected with the cutting mechanism 7.

Further, the body 1 further comprises a battery 8, and the battery 8 is electrically connected with and supplies power to the first driving unit 3 and the second driving unit 5, respectively.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides an automatic advance and retreat pencil sharpener, includes body (1), its characterized in that, body (1) include first drive unit (3), second drive unit (5), advance and retreat a mechanism (6) and cutting mechanism (7), first drive unit (3) through drive mechanism (4) with cutting mechanism (7) are connected, are used for the drive cutting mechanism (7) for waiting to cut the pencil turnover, second drive unit (5) with advance and retreat a mechanism (6) transmission and connect, be used for the drive advance and retreat a mechanism (6) drive and wait to cut the pencil upwards or move down.

2. The automatic pencil sharpener of moving forward and backward as claimed in claim 1, wherein: the advancing and retreating mechanism (6) comprises two pen clamping assemblies (61) which are arranged at intervals, the two pen clamping assemblies (61) are in transmission connection, one of the pen clamping assemblies (61) rotates around the axis of the pen clamping assembly, and the other pen clamping assembly (61) is driven to synchronously and reversely rotate.

3. The automatic advance and retreat penknife according to claim 2, characterized in that: each pen clamping component (61) is coaxially provided with a transmission gear (62), and the two transmission gears (62) are meshed with each other to realize transmission connection of the two pen clamping components (61).

4. The automatic advance and retreat pencil sharpener of claim 2 or 3, wherein: the second driving unit (5) is provided with an output end rotating around an axis, a worm (51) is installed on the output end, and a worm wheel (63) meshed with the worm (51) is coaxially arranged on one of the pen clamping assemblies (61).

5. The automatic advance and retreat penknife according to claim 2, characterized in that: the advancing and retreating pen mechanism (6) further comprises a rotary table which is horizontally arranged, each pen clamping component (61) is provided with a gear part, and the two pen clamping components (61) are connected in a transmission mode through the gear parts and the rotary table in a meshing mode.

6. The automatic advance and retreat pencil sharpener of claim 5, wherein: the output end of the second driving unit (5) is provided with a worm (51), the worm (51) is meshed with the turntable and is used for driving the turntable to rotate in a turnover manner to drive the two pen clamping assemblies (61) to rotate synchronously.

7. An automatic advance and retreat pencil sharpener according to claim 2, 3 or 6, wherein: the second driving unit (5) is a motor which is horizontally arranged.

8. The automatic advance and retreat penknife according to claim 1, characterized in that: the rotary output end of the first driving unit (3) is provided with an output gear (31), the transmission mechanism (4) comprises a reduction gear set (41), the output gear (31) is meshed with one gear in the reduction gear set (41) and connected with the other gear in the reduction gear set (41) and the cutting mechanism (7) in a coaxial connection mode.

9. The automatic advance and retreat penknife according to claim 1, characterized in that: the body (1) further comprises a battery (8), and the battery (8) is electrically connected with the first driving unit (3) and the second driving unit (5) respectively.

10. The automatic advance and retreat penknife according to claim 1, characterized in that: the cutting mechanism (7) comprises a cutter frame and a hob cutter arranged on the cutter frame.