CN213007301U

CN213007301U - Pencil feeding mechanism of pencil sharpener

Info

Publication number: CN213007301U
Application number: CN202021382176.5U
Authority: CN
Inventors: 林靖
Original assignee: Sunwood Holding Group Co ltd
Current assignee: Sunwood Holding Group Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-04-20
Anticipated expiration: 2030-07-14

Abstract

The utility model provides a pencil mechanism of advancing of ware of cutting belongs to the technical field of cutting a pencil. It has solved the current problem that the quality of cutting a pencil is poor of mechanism of advancing of cutting a pencil ware. This penknife advances a mechanism and includes the support, carousel and pivot, be provided with the through-hole on the carousel, it forms the passageway of sending between double-layered pen wheel and two double-layered pen wheels to all overlap in the pivot, the opposite end of two pivots is overlapped respectively and is equipped with driven gear, the carousel border distributes and has a plurality of racks, one side that the carousel pressed from both sides the pen wheel dorsad is equipped with the portion of cup jointing that stretches out outside the support, the stop part has in the pivot, two press from both sides the pen wheel both ends and lean on with stop part and the driven gear counterbalance on the same root pivot respectively, the driven gear inboard is equipped with the circular arc boss, a terminal surface that the double-layered pen wheel was kept away from to the circular arc boss is. The pencil feeding mechanism of the pencil sharpener has the advantages that the pencil point is not easy to break, and the pencil can be fed once and sharpened without repeatedly feeding the pencil.

Description

Pencil feeding mechanism of pencil sharpener

Technical Field

The utility model belongs to the technical field of cut a, relate to and cut a ware, especially relate to the mechanism of advancing of cutting a ware.

Background

A pencil sharpener, in particular to a full-automatic pencil sharpener, is a common office stationery in office work or daily study and life. It generally includes the shell that the inside is fixed with the core, and the core includes support, penholder, planing subassembly, pivot and can control pivot pivoted motor, and the planing subassembly arranges in one side of penholder, and the penholder is fixed in the upper end of pivot, drives pivot and penholder through the motor and rotates for the planing subassembly can carry out the rotation for the penholder and plane in order to putting into the pencil in the penholder. In order to realize the convenience of operation, an automatic pencil feeding mechanism is connected to the upper end of the pencil rack, and the pencil rack rotates to drive the automatic pencil feeding mechanism to operate so as to automatically feed the pencil into the pencil rack for planing.

For example, application No. 201420437278.0 discloses a pencil feeding device of automatic pencil sharpener, it includes the support, dial the driving wheel and two installation axles of coupling on the support, two installation epaxial overlaps in proper order and are equipped with gear and gyro wheel, two epaxial gears of installation are central symmetry, gear and the rack toothing that dials on the driving wheel, gyro wheel and gear respectively with install axle clearance fit, when dial the driving wheel and rotate, the gear removes and sticiss with a side of gyro wheel to the gyro wheel, two gyro wheels are close to each other and press from both sides tightly at the pencil lateral part, two gyro wheels rotate under the frictional force effect that corresponds the gear simultaneously, just can send the pencil into the sharpener automatically under the effect of frictional force between two gyro wheels and pencil and dig the sharpening like this. Then, the pencil feeding device can generate continuous pencil feeding force in the pencil feeding process, and the continuous pencil feeding force enables the pencil to be fed continuously for planing, so that the pencil point is broken, and the pencil sharpening quality is influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a cut into a mechanism of ware, solved the poor problem of quality of cutting a pencil.

The purpose of the utility model can be realized by the following technical proposal:

the pencil feeding mechanism of the pencil sharpener comprises a bracket, a turntable arranged on the inner side of the bracket and two rotating shafts arranged on the bracket in parallel, the rotating disc is provided with a through hole in a penetrating way, the two rotating shafts are respectively sleeved with a pen clamping wheel, a pen feeding channel positioned above the through hole is formed between the two pen clamping wheels, the opposite ends of the two rotating shafts are respectively sleeved with a driven gear, a plurality of racks meshed with the two driven gears are distributed on the edge of the rotating disc, one side of the rotating disc, which is back to the pen clamping wheels, is provided with a sleeve part extending out of the bracket, it is characterized in that the rotating shaft is provided with a blocking part, two ends of two pen clamping wheels respectively abut against the blocking part and the driven gear on the same rotating shaft, the pen clamping wheels are made of soft materials, the inner side of the driven gear is provided with an arc boss, one end surface of the arc boss far away from the pen clamping wheels is a guide surface with gradient, the outer side of the rotating shaft is provided with a lug, and when the rotating disc rotates, the guide surface can move along the convex block to enable the driven gear to extrude the pen clamping wheel towards the blocking part.

When the pencil needs to be shaved, the pencil is inserted into the pencil sharpener, and the end part of the pencil is positioned in a pencil feeding channel formed between the two pencil clamping wheels. In an initial state, the driven gear, the pen clamping wheel and the blocking part are only in abutting connection, then the penholder in the pencil sharpener is controlled to rotate in an electric or manual mode, and the turntable is sleeved at the upper end of the penholder through the sleeving part and rotates synchronously with the penholder. Along with the carousel rotates, rack on the carousel just can drive two driven gear rotations, and the spigot surface of circular arc boss just can move along the lug in the driven gear this moment, because the spigot surface has the slope and the lug keeps motionless, consequently makes driven gear constantly will press from both sides a pen wheel to the stop part extrusion with the help of the effect of spigot surface slope, so driven gear, press from both sides between pen wheel and the stop part just can form bigger and bigger frictional force to make and press from both sides a pen wheel and rotate under frictional force and inwards send into the pencil and carry out the planing. When the driven gear rotates to the position that the guide surface is separated from the convex block, the pencil clamping wheel is not extruded any more and stops rotating, so that the feeding of the pencil is suspended; when the driven gear rotates again until the guide surface moves along the convex block, the pencil clamping wheel rotates gradually under the action of friction force to feed the pencil again. In the whole planing process, the steps are repeated continuously until the planing is finished.

The guide surface with the slope is matched with the lug, so that the pencil feeding mechanism of the pencil sharpener can provide intermittent pencil feeding force instead of discontinuous pencil feeding force, the pencil feeding speed can be ensured to be matched with the pencil sharpening speed while the pencil is normally fed, the phenomenon that a pencil point is easy to break due to continuous pencil sharpening is eliminated, and the pencil sharpening quality is improved.

In the pencil feeding mechanism of the pencil sharpener, one end surface of the driven gear is provided with a protruding cylindrical extrusion part, the outer diameter of the cylindrical extrusion part is smaller than the root circle diameter of the driven gear, and the cylindrical extrusion part abuts against the pencil clamping wheel.

In the pencil feeding mechanism of the pencil sharpener, the number of the arc bosses is two, and the number of the lugs is two.

In the pencil feeding mechanism of the pencil sharpener, the blocking part is annular, and the blocking part and the rotating shaft are of an integrated structure.

In the pencil feeding mechanism of the pencil sharpener, the support is provided with a circular hole, one side of the turntable, which is back to the pencil clamping wheel, is provided with a plurality of circular arc lugs positioned on the same circumference, the outer wall of each circular arc lug abuts against the inner wall of the circular hole, and the turntable is provided with a buckling strip with the end part buckled on the support between two adjacent circular arc lugs.

Compared with the prior art, the pencil feeding mechanism of the pencil sharpener is matched with the bump through the guide surface with the slope, so that the pencil feeding mechanism of the pencil sharpener can provide intermittent pencil feeding force instead of discontinuous pencil feeding force, the pencil feeding speed can be ensured to be matched with the pencil sharpening speed while the pencil is normally fed, the phenomenon that a pencil point is easy to break due to continuous pencil sharpening is eliminated, and the pencil sharpening quality is improved.

Drawings

FIG. 1 is a schematic view of the pencil feed mechanism of the present sharpener.

Fig. 2 is an exploded view of the pencil feeding mechanism of the pencil sharpener.

Fig. 3 is another exploded perspective view of the pencil advancing mechanism of the present sharpener.

FIG. 4 is an exploded view of the spindle and the driven gear of the pencil sharpener.

In the figure, 1, a bracket; 1a, lugs; 1b, round holes; 2. a turntable; 2a, a through hole; 2b, a sleeve joint part; 2c, a rack; 2d, arc lug; 2e, buckling strips; 3. a rotating shaft; 3a, a blocking part; 3b, a bump; 4. a driven gear; 4a, an arc boss; 4a1, guide surface; 4b, a cylindrical extrusion part; 5. a pen clipping wheel.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The pencil feeding mechanism of the pencil sharpener comprises a support 1, a rotary disc 2 arranged on the inner side of the support 1 and two rotating shafts 3 arranged on the support 1 in parallel, wherein a lug 1a is arranged on the outer side of the support 1, and a mounting hole is formed in the lug 1a, so that the support 1 can be fixed in the pencil sharpener through a fastener. The turntable 2 is provided with a through hole 2a in a penetrating mode, the two rotating shafts 3 are respectively sleeved with a pen clamping wheel 5, and a pen feeding channel located above the through hole 2a is formed between the two pen clamping wheels 5. The opposite ends of the two rotating shafts 3 are respectively sleeved with a driven gear 4, and a plurality of racks 2c meshed with the two driven gears 4 are distributed on the edge of the rotating disc 2. The rotating shaft 3 is provided with a blocking part 2b, and two ends of the two pen clamping wheels 5 are respectively abutted against the blocking part 2b and the driven gear 4 on the same rotating shaft 3. The blocking part 2b is annular, and the blocking part 2b and the rotating shaft 3 are of an integrated structure. The pen clamping wheel 5 is made of soft materials, specifically rubber, an arc boss 4a is arranged on the inner side of the driven gear 4, one end face, far away from the pen clamping wheel 5, of the arc boss 4a is a guide face 4a1 with gradient, a protruding block 3b is arranged on the outer side of the rotating shaft 3, and when the rotating disc 2 rotates, the guide face 4a1 can move along the protruding block 3b to enable the driven gear 4 to extrude the pen clamping wheel 5 to the blocking portion 3 a. One end face of the driven gear 4 is provided with a convex cylindrical extrusion part 4b, the outer diameter of the cylindrical extrusion part 4b is smaller than the diameter of a root circle of the driven gear 4, and the cylindrical extrusion part 4b abuts against the pen clamping wheel 5. The number of the circular arc bosses 4a is two, and the number of the convex blocks 3b is two.

Further, a circular hole 1b is formed in the support 1 in a penetrating mode, the rotary table 2 is located at the circular hole 1b, a plurality of arc protruding pieces 2d located on the same circumference are arranged on one side, back to the pen clamping wheel 5, of the rotary table 2, and the outer wall of each arc protruding piece 2d abuts against the inner wall of the circular hole 1 b. The turntable 2 is provided with a buckling strip 2e between two adjacent arc convex pieces 2d, and the end part of each buckling strip 2e is buckled on the bracket 1. The side of the turntable 2 is also provided with a sleeve joint part 2b extending out of the round hole 1b, and the through hole 2a is positioned on the inner side of the sleeve joint part 2 b.

When the pencil needs to be shaved, the pencil is inserted into the sharpener, so that the end part of the pencil is positioned in the pencil feeding channel formed between the two pencil clamping wheels 5. In an initial state, the driven gear 4, the pen clamping wheel 5 and the blocking part 3b are only in abutting connection, then the penholder in the pencil sharpener is controlled to rotate in an electric or manual mode, and the rotary disc 2 is sleeved at the upper end of the penholder through the sleeving part 2b and then synchronously rotates along with the penholder. The rack 2c on the rotary disc 2 drives the two driven gears 4 to rotate along with the rotation of the rotary disc 2, at this time, the guide surface 4a1 of the circular arc boss 4a in the driven gear 4 moves along the projection 3b, and because the guide surface 4a1 has a slope and the projection 3b remains stationary, the driven gear 4 continuously presses the pencil clamping wheel 5 against the blocking part 3a under the action of the slope of the guide surface 4a1, so that increasingly large friction force is formed among the driven gear 4, the pencil clamping wheel 5 and the blocking part 3a, and the pencil clamping wheel 5 rotates under the action of the friction force to feed the pencil inwards for planing. When the driven gear 4 rotates until the guide surface 4a1 is separated from the projection 3b, the pencil clamping wheel 5 is not squeezed any more and stops rotating, so that the feeding of the pencil is suspended; when the driven gear 4 rotates again until the guide surface 4a1 moves along the projection 3b, the pencil clamping wheel 5 rotates gradually under the action of friction force to feed the pencil again. In the whole planing process, the steps are repeated continuously until the planing is finished.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A pencil feeding mechanism of a pencil sharpener comprises a support (1), a rotary disc (2) arranged on the inner side of the support (1) and two rotating shafts (3) arranged on the support (1) in parallel, wherein through holes (2a) are arranged on the rotary disc (2) in a penetrating manner, pencil clamping wheels (5) are sleeved on the two rotating shafts (3), a pencil feeding channel positioned above the through holes (2a) is formed between the two pencil clamping wheels (5), driven gears (4) are sleeved on the opposite ends of the two rotating shafts (3) respectively, a plurality of racks (2c) meshed with the two driven gears (4) are distributed on the edge of the rotary disc (2), one side of the rotary disc (2) opposite to the pencil clamping wheels (5) is provided with a sleeve joint part (2b) extending out of the support (1), the pencil sharpener is characterized in that a blocking part (3a) is arranged on the rotating shafts (3), and the two ends of the two pencil clamping wheels (5) are respectively abutted against the blocking part (3a) and the driven gears (4) on the same, the pen clamping wheel (5) is made of soft materials, an arc boss (4a) is arranged on the inner side of the driven gear (4), one end face, away from the pen clamping wheel (5), of the arc boss (4a) is a guide face (4a1) with gradient, a lug (3b) is arranged on the outer side of the rotating shaft (3), and when the rotating disc (2) rotates, the guide face (4a1) can move along the lug (3b) to enable the driven gear (4) to extrude the pen clamping wheel (5) towards the blocking portion (3 a).

2. The feed mechanism of a pencil sharpener as claimed in claim 1, wherein the driven gear (4) has a protruding cylindrical pressing portion (4b) at one end face, the outer diameter of the cylindrical pressing portion (4b) is smaller than the diameter of the dedendum circle of the driven gear (4), and the cylindrical pressing portion (4b) abuts against the pencil clamping wheel (5).

3. The pencil feeding mechanism of the pencil sharpener as claimed in claim 2, wherein the number of the circular arc bosses (4a) is two, and the number of the projections (3b) is two.

4. The pencil feeding mechanism of the pencil sharpener as claimed in claim 1, 2 or 3, wherein the blocking part (3a) is annular, and the blocking part (3a) and the rotating shaft (3) are of an integral structure.

5. The pencil feeding mechanism of the pencil sharpener as claimed in claim 1, 2 or 3, wherein the support (1) is provided with a circular hole (1b), one side of the turntable (2) facing away from the pencil clamping wheel (5) is provided with a plurality of circular arc lugs (2d) positioned on the same circumference, the outer wall of each circular arc lug (2d) is abutted against the inner wall of the circular hole (1b), and the turntable (2) is provided with a buckling strip (2e) with an end part buckled on the support (1) between two adjacent circular arc lugs (2 d).