CN215474151U

CN215474151U - Automatic pen feeding mechanism

Info

Publication number: CN215474151U
Application number: CN202121441769.9U
Authority: CN
Inventors: 赵娇爱
Original assignee: Zhao Jiaoai
Current assignee: Zhao Jiaoai
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-01-11
Anticipated expiration: 2031-06-28

Abstract

The utility model relates to an automatic pencil feeding mechanism, which comprises a knife rest, a lower cover body and a pencil feeding assembly, wherein a pencil rolling cavity is arranged in the knife rest, the pencil feeding assembly comprises two pencil feeding wheels, the two pencil feeding wheels can be rotatably arranged in the lower cover body, a pencil feeding cavity is arranged between the two pencil feeding wheels, a pencil enters the pencil rolling cavity through the pencil feeding cavity, the pencil feeding assembly is connected with the knife rest through a transmission mechanism and synchronously rotates with the knife rest, automatic pencil feeding can be realized while pencil rolling, and the technical problem that in the process of pencil sharpening, a pencil needs to be manually placed in a little by little, and operation is inconvenient is caused is solved.

Description

Automatic pen feeding mechanism

Technical Field

The utility model relates to the technical field of stationery, in particular to an automatic pen feeding mechanism.

Background

The electric pencil sharpener is a tool for driving a hob to rotate through a motor, so that the inserted pencil point is cut. With the continuous development of the electric pencil sharpener, the functions of the electric pencil sharpener are more and more improved. At present, although the electric pencil sharpener in the market does not need to manually sharpen the pencil, the pencil needs to be manually put in little by little in the process of sharpening the pencil, so that the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide an automatic pencil feeding mechanism to solve the technical problem that an electric pencil sharpener in the prior art needs to manually put a pencil in a little by little in the pencil sharpening process, so that the operation is inconvenient.

In order to solve the technical problem, the utility model provides an automatic pencil feeding mechanism which comprises a knife rest, a lower cover body and a pencil feeding assembly, wherein a pencil rolling cavity is arranged in the knife rest, the pencil feeding assembly comprises two pencil feeding wheels, the two pencil feeding wheels can be rotatably arranged in the lower cover body, the pencil feeding cavity is arranged between the two pencil feeding wheels, a pencil enters the pencil rolling cavity through the pencil feeding cavity and then reaches the pencil rolling cavity, and the pencil feeding assembly is connected with the knife rest through a transmission mechanism and synchronously rotates with the knife rest.

After adopting the structure, the automatic pen feeding mechanism has the following advantages: the pen feeding assembly is connected with the knife rest through the transmission mechanism, so that the pen feeding assembly and the knife rest can rotate synchronously, automatic pen feeding can be realized while the pen is rolled, and the operation is more convenient.

As an improvement, the transmission mechanism comprises a driving gear, two transition gears, two driven gears, two worm wheels and two worms, a first through hole is formed in the bottom surface of the lower cover body, a second through hole is formed in the center of the driving gear, the driving gear is rotatably arranged on the bottom surface of the lower cover body, the second through hole and the first through hole are coaxial, the cutter rest is connected with the driving gear and is positioned outside the lower cover body, the driving gear and the cutter rest rotate coaxially, the two transition gears are meshed with the driving gear and are positioned on two sides of the driving gear, the two driven gears are respectively meshed with the two transition gears, the two worms are respectively arranged coaxially with the two driven gears, the two worm wheels are respectively arranged coaxially with the two pen inlet wheels, the two worms are respectively meshed with the two worm wheels, and when the cutter rest rotates, the transmission mechanism drives the pen inlet assembly and enables the pencil to move towards the cutter rest; by adopting the structure, the structure has the advantage of simple structure.

As an improvement, two parallel partition plates are arranged in the lower cover body, and two ends of each pen feeding wheel are respectively arranged on the two partition plates; by adopting the structure, the structure has the advantage of simple structure.

As an improvement, the tool rest is connected with the driving gear through a spline; by adopting the structure, the structure has the advantage of more stable connection.

As an improvement, a cylindrical third bulge is coaxially and integrally formed on the driving gear, a third through hole is formed in the third bulge, the third bulge is inserted into the first through hole, the third through hole and the second through hole are coaxial, and a second buckle for fixing the driving gear and the lower cover body is arranged on the outer peripheral wall of the third bulge; by adopting the structure, the connection between the driving gear and the lower cover body is more stable.

As an improvement, an annular second flange is arranged on the inner bottom surface of the lower cover body, the second flange is arranged around the first through hole, and the section of the second flange is arc-shaped; by adopting the structure, the contact area between the driving gear and the bottom surface of the lower cover body is reduced, and the abrasion of the driving gear in the use process is reduced.

As an improvement, an internal gear is fixedly arranged on the outer bottom surface of the lower cover body, a hob gear is arranged on the tool rest, and the hob gear is internally meshed with the internal gear; by adopting the structure, the tool rest can rotate more stably.

As an improvement, a fixing mechanism is arranged between the lower cover body and the inner gear, the fixing mechanism comprises a plurality of circular-arc first bulges distributed along the circumference of the outer bottom surface of the lower cover body, a first buckle is arranged between every two adjacent first bulges, a second bulge is arranged on the inner wall of each first bulge, a first flange is arranged on the outer peripheral wall of the inner gear, the first flange is positioned at one end of the inner gear and close to the lower cover body, a groove is arranged on the first flange, the first buckle buckles the first flange, and the second bulges are clamped in the groove; by adopting the structure, the connection between the lower cover body and the inner gear is more stable.

As an improvement, the pencil holder further comprises an upper cover body, wherein a fourth through hole is formed in the upper cover body, a pencil is inserted into the pencil feeding cavity from the fourth through hole, the upper cover body is spliced with the lower cover body to form a complete cover body, and the pencil feeding assembly and the transmission mechanism are both positioned in an inner cavity of the cover body; by adopting the structure, the upper cover body can protect all structures positioned in the lower cover body, the structures in the lower cover body are prevented from being exposed to the outside to influence the use safety, and the fourth through hole can be used for a pencil to be inserted into the pencil feeding cavity.

Drawings

Fig. 1 is an exploded view of the overall structure of the present invention.

Fig. 2 is a perspective view of the inner structure of the lower cover of the present invention.

Fig. 3 is an exploded view of the inner structure of the lower cover of the present invention.

Fig. 4 is a sectional view of the connection of the lower cover body and the driving gear according to the present invention.

FIG. 5 is an exploded view of the lower cover and the inner gear of the present invention.

Fig. 6 is an exploded view of the lower cap and the tool holder of the present invention.

Reference numerals: 1. a tool holder; 100. a pencil sharpener cavity; 101. a hob gear; 2. a lower cover body; 3. a pen feeding assembly; 301. a pen feeding wheel; 302. a pen inlet cavity; 4. a transmission mechanism; 401. a drive gear; 402. a transition gear; 403. a driven gear; 404. a turbine; 405. a worm; 5. a first through hole; 6. a second through hole; 7. a partition plate; 8. a spline; 801. an internal spline; 802. an external spline; 9. a third protrusion; 10. a third through hole; 11. a second buckle; 12. a second flange; 13. an internal gear; 14. a fixing mechanism; 141. a first protrusion; 142. a first buckle; 143. a second protrusion; 144. a first flange; 145. a first groove; 15. an upper cover body; 16. a fourth via hole; 17. a second groove.

Detailed Description

The automatic pen feeding mechanism of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, an automatic pen feeding mechanism comprises, from top to bottom, an upper cover 15, a pen feeding assembly 3, a transmission mechanism 4, a lower cover 2, an internal gear 13 and a tool rest 1 in sequence, wherein the upper cover 15 is provided with a fourth through hole 16; be equipped with the baffle 7 of two parallels down in the lid 2, all be equipped with two second recesses 17 on every baffle, it includes two pen wheels 301 to advance a subassembly 3, every both ends of advancing pen wheels 301 are equallyd divide and are do not located on the second recess 17 on two baffles 7, two advance pen wheels 301 and all rotate and be parallel to each other, it is equipped with into a chamber 302 to advance two between the pen wheels 301, go up lid 15 amalgamation down lid 2 and form complete lid, it all is located the lid inner chamber to advance a subassembly 3, drive mechanism 4 and baffle 7.

The transmission mechanism 4 comprises a driving gear 401, two transition gears 402, two driven gears 403, two worm wheels 404 and two worms 405, a first through hole 5 is arranged on the bottom surface of the lower cover body 2, an annular second flange 12 is arranged on the bottom surface of the lower cover body 2, the second flange 12 is arranged around the first through hole 5, the section of the second flange 12 is arc-shaped, a second through hole 6 is arranged at the center of the driving gear 401, the driving gear 401 is rotatably arranged on the bottom surface of the lower cover body 2, the second through hole 6 and the first through hole 5 are coaxial, a cylindrical third bulge 9 is coaxially and integrally formed on the driving gear 401, a third through hole 10 is arranged on the third bulge 9, the third bulge 9 is inserted into the first through hole 5, so that the driving gear 401 is positioned on the second flange 12, the third through hole 10 and the second through hole 6 are coaxial, a second buckle 11 for fixing the driving gear 401 and the lower cover body 2 is arranged on the outer peripheral wall of the third bulge 9, the second buckle 11 is positioned at the outer side of the lower cover body 2 and props against the outer bottom surface of the lower cover body 2, so that the driving gear 401 is axially limited; the tool rest 1 is connected with the driving gear 401 through a spline 8, the tool rest 1 is positioned outside the lower cover body 2, an inner spline 801 is arranged on the inner wall of the third through hole 10, an outer spline 802 is arranged on the outer peripheral wall of one end of the tool rest 1, and the outer spline 802 is matched and connected with the inner spline 801 to enable the driving gear 401 and the tool rest 1 to rotate coaxially; the two transition gears 402 are meshed with the driving gear 401 and located on two sides of the driving gear 401, the two driven gears 403 are respectively meshed with the two transition gears 402, the two worms 405 are respectively arranged coaxially with the two driven gears 403, the two worm wheels 404 are respectively arranged coaxially with the two pen feeding wheels 301, the two worms 405 are respectively meshed with the two worm wheels 404, as shown in fig. 2 and 3, the two pen feeding wheels 301 are located between the two driven gears 403, that is, the two worm wheels 404 are located between the two worms 405; when the knife rest 1 rotates, the transmission mechanism 4 drives the pencil feeding assembly 3 and enables the pencil to move towards the knife rest 1.

An inner gear 13 is fixedly arranged on the outer bottom surface of the lower cover body 2, a hob gear 101 is arranged on the tool rest 1, and the hob gear 101 is internally meshed with the inner gear 13; be equipped with fixed establishment 14 between lower lid 2 and the internal gear 13, fixed establishment 14 includes a plurality of circular-arc first archs 141 along the outer bottom surface circumference distribution of lower lid 2, first arch 141 is totally four in this embodiment, be equipped with first buckle 142 between the adjacent first arch 141, all be equipped with the second arch 143 on every first arch 141 inner wall, be equipped with first flange 144 on the internal gear 13 periphery wall, first flange 144 is located internal gear 13 one end and is close to lower lid 2, be equipped with first recess 145 on the first flange 144, first buckle 142 catches first flange 144, second arch 143 is blocked in first recess 145.

A pencil cavity 100 is also arranged in the tool rest 1. When the pencil sharpener is used, the pencil sharpener is matched with the existing pencil sharpener, the knife rest 1 is matched and connected with the driving part of the pencil sharpener, a pencil is inserted into the pencil feeding cavity 302 from the fourth through hole 16, the knife rest 1 rotates, the knife rest 1 drives the transmission mechanism 4 to enable the two pencil feeding wheels 301 to rotate, the rotation directions of the two pencil feeding wheels 301 are opposite, and the pencil is moved into the pencil sharpening cavity 100 to finish pencil sharpening.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Claims

1. The utility model provides an automatic advance a mechanism, its characterized in that includes knife rest (1), lower lid (2) and advances a subassembly (3), be equipped with pencil chamber (100) in knife rest (1), advance a subassembly (3) including two advance a wheel (301), two advance a wheel (301) and all can rotate to locate in lower lid (2), two advance and be equipped with into a chamber (302) between a wheel (301), the pencil warp advance a chamber (302) and get after getting into in pencil chamber (100), advance a subassembly (3) through drive mechanism (4) with knife rest (1) are connected and with knife rest (1) synchronous rotation.

2. The automatic pen feeding mechanism according to claim 1, wherein the transmission mechanism (4) comprises a driving gear (401), two transition gears (402), two driven gears (403), two worm wheels (404) and two worm screws (405), a first through hole (5) is formed in the bottom surface of the lower cover body (2), a second through hole (6) is formed in the center of the driving gear (401), the driving gear (401) is rotatably arranged on the bottom surface of the lower cover body (2), the second through hole (6) is coaxial with the first through hole (5), the knife rest (1) is connected with the driving gear (401) and is located outside the lower cover body (2), the driving gear (401) and the knife rest (1) rotate coaxially, the two transition gears (402) are meshed with the driving gear (401) and are located on two sides of the driving gear (401), two driven gear (403) mesh two transition gear (402) respectively, two worm (405) respectively with two driven gear (403) coaxial setting, two turbine (404) respectively with two advance a wheel (301) coaxial setting, two worm (405) mesh two respectively turbine (404), work as when knife rest (1) rotates, drive mechanism (4) drive advance a subassembly (3) and make the pencil toward knife rest (1) direction removal.

3. The automatic pencil feeding mechanism according to claim 2, characterized in that two parallel partition plates (7) are arranged in the lower cover body (2), and two ends of each pencil feeding wheel (301) are respectively arranged on the two partition plates (7).

4. An automatic pencil feeding mechanism according to claim 2, characterized in that the tool holder (1) and the driving gear (401) are connected by a spline (8).

5. The automatic pen feeding mechanism according to claim 2, wherein a cylindrical third protrusion (9) is coaxially and integrally formed on the driving gear (401), a third through hole (10) is formed in the third protrusion (9), the third protrusion (9) is inserted into the first through hole (5), the third through hole (10) and the second through hole (6) are coaxially, and a second buckle (11) for fixing the driving gear (401) and the lower cover body (2) is formed in the outer peripheral wall of the third protrusion (9).

6. The automatic pencil feeding mechanism according to claim 2, characterized in that a ring-shaped second flange (12) is arranged on the inner bottom surface of the lower cover body (2), the second flange (12) is arranged around the first through hole (5), and the cross section of the second flange (12) is arc-shaped.

7. The automatic pencil feeding mechanism according to claim 1, characterized in that an internal gear (13) is fixed on the outer bottom surface of the lower cover body (2), a hob gear (101) is arranged on the tool rest (1), and the hob gear (101) is engaged with the internal gear (13).

8. An automatic pencil feeding mechanism according to claim 7, characterized in that a fixing mechanism (14) is provided between the lower cap (2) and the inner gear (13), the fixing mechanism (14) comprises a plurality of arc-shaped first bulges (141) distributed along the circumference of the outer bottom surface of the lower cover body (2), a first buckle (142) is arranged between every two adjacent first bulges (141), a second bulge (143) is arranged on the inner wall of each first bulge (141), a first flange (144) is arranged on the peripheral wall of the inner gear (13), the first flange (144) is positioned at one end of the inner gear (13) and is close to the lower cover body (2), the first flange (144) is provided with a first groove (145), the first buckle (142) buckles the first flange (144), and the second protrusion (143) is clamped in the first groove (145).

9. The automatic pencil feeding mechanism according to claim 1, further comprising an upper cover (15), wherein a fourth through hole (16) is formed in the upper cover (15), a pencil is inserted into the pencil feeding cavity (302) through the fourth through hole (16), the upper cover (15) is assembled with the lower cover (2) to form a complete cover, and the pencil feeding assembly (3) and the transmission mechanism (4) are both located in the inner cavity of the cover.