CN213035570U

CN213035570U - Knife rest assembly of pencil sharpener

Info

Publication number: CN213035570U
Application number: CN202021157885.3U
Authority: CN
Inventors: 娄宗茂
Original assignee: Jinyi Stationery Co ltd
Current assignee: Jinyi Stationery Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-04-23
Anticipated expiration: 2030-06-19

Abstract

The utility model relates to a pencil sharpener technical field discloses a pencil sharpener's knife rest assembly, including: a tool rest and a hob; the middle part of the knife rest is provided with a pen containing cavity, the side surface of the knife rest is provided with a mounting groove for mounting the hob, and the mounting groove is communicated with the pen containing cavity; the hob is rotatably arranged in the mounting groove; the blade is arranged on the knife rest and extends to the pen containing cavity. The utility model has the advantages of, this knife rest assembly cut a thoroughly, and no saw-dust and burr remain, cut a effectual, user experience feels good.

Description

Knife rest assembly of pencil sharpener

Technical Field

The utility model relates to a pencil sharpener technical field especially relates to a pencil sharpener's knife rest assembly.

Background

In the working process of the electric pencil sharpener, the tool rest rotates, the hob on the tool rest gradually sharpens the pencil, and the tool rest and the hob are core working components of the electric pencil sharpener. The existing electric pencil sharpener generally sharpens pencils through a hob, but after the pencil is sharpened by the hob, a certain problem also exists, burrs and wood chips are easily remained at the conical surface of the pencil close to the pencil point, and the pencil sharpening effect and the user experience are influenced.

For example, a holder for a pencil sharpener is disclosed in publication "CN 210122017U", which comprises: the pen holder comprises a holder body with a pen containing cavity, wherein the holder body is provided with an installation cavity which is communicated with the pen containing cavity; a first chip groove for discharging pen scraps on the upper part of the frame body is formed in the upper side wall of the frame body, a second chip groove for discharging pen scraps on the lower part of the frame body is formed in the lower side wall of the frame body, and the first chip groove and the second chip groove are both communicated with the installation cavity; the transmission seat is connected below the frame body. In this scheme, after the hobbing cutter cut a pencil and is accomplished, can remain saw-dust or burr near pencil nib department usually, when leading to holding the pencil and writing, experience feels poorly.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art, the utility model aims to solve the technical problem lie in, provide a knife rest assembly who cuts a thorough, no saw-dust and burr remaining pencil sharpener of pen.

The utility model provides a technical scheme that its technical problem adopted is, provides a sharpener's knife rest assembly, including:

a tool rest and a hob; a pen containing cavity is formed in the middle of the knife rest, an installation groove for installing the hob is formed in the side face of the knife rest, and the installation groove is communicated with the pen containing cavity; the hob cutter can be rotatably arranged in the mounting groove;

the blade is arranged on the knife rest and extends to the pen containing cavity.

Further, a blade groove is formed in the side face of the cutter rest, and the blades are detachably arranged in the blade groove.

Furthermore, a boss protrudes from the side, close to the hobbing cutter, of the cutter frame, and the blade groove is formed in the boss; the blade is provided with a through hole, and the boss is provided with a threaded hole at a position opposite to the through hole; a screw is threadedly received in the threaded bore through the through hole to secure the insert in the insert pocket.

Furthermore, the blade is arranged in a rectangular shape and comprises a cutting edge surface and three positioning side surfaces; the boss is provided with a [ -shaped positioning wall, and the three positioning side faces are attached to the positioning wall.

Furthermore, the bottom of the pen accommodating cavity is provided with a conical surface, the edge surface is obliquely arranged relative to the axis of the conical surface, and the inclination angle of the edge surface is equal to the cone angle of the conical surface.

Furthermore, the bottom of the tool rest, which is close to the pen containing cavity, is provided with a chip removal groove, and the chip removal groove penetrates through the tool rest.

Furthermore, the tool rest comprises a frame body, wherein a lug protrudes from the upper part of the frame body towards the hob side, a mounting seat is arranged on the lower part of the frame body, and the mounting seat and the lug enclose the mounting groove.

Furthermore, a rotating shaft hole is formed in the mounting seat and the lug, and the hob is hinged to the two rotating shaft holes through a rotating shaft.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

in the utility model, the side surface of the knife rest is provided with the blade groove for installing the blade, the blade can be matched and positioned through the three positioning side surfaces and the positioning walls on the lug bosses, the installation precision of the blade is ensured, and the blade can be detachably fixed on the knife rest through the screw; due to the arrangement of the blade, after the pencil is sharpened by the hob, the blade can remove burrs and residual sawdust on the pencil, so that after the pencil is sharpened by the tool rest assembly, no burrs and residual sawdust exist on the pencil, when the pencil is held by hands for writing, no stabbing hand and concave-convex feeling exist, and the user experience is good; the inclination angle of the upper edge surface of the blade is set to be the same as the taper angle of the conical surface arranged at the bottom of the pencil containing cavity, so that the blade cannot interfere with a pencil in the pencil sharpening process, and the deburring and sawdust removing effects of the blade are good; the cut pen scraps and sawdust can be discharged from the scrap discharge groove at the bottom of the cutter frame in time so as to prevent the clamping stagnation of the hob.

Drawings

FIG. 1 is a schematic view of a tool holder assembly according to the present invention;

FIG. 2 is a schematic view of the pencil of FIG. 1 after being loaded;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a schematic view of the location of the taper and the blade;

fig. 5 is a schematic structural view of fig. 4 from another view angle.

In the figure, the position of the upper end of the main shaft,

1. a tool holder; 10. a frame body; 11. a lug; 12. a pen accommodating cavity; 14. a boss; 15. a chip groove; 101. a mounting seat; 102. a rotating shaft hole; 120. a conical surface; 140. an insert pocket; 141. a threaded hole; 142. a positioning wall;

2. hobbing cutters;

3. a blade; 30. a through hole; 31. a cutting edge surface; 32. positioning the side surface;

4. a screw; 5. a pencil; 6. a rotating shaft.

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.

As shown in fig. 1 to 5, a holder assembly for a pencil sharpener includes: a tool holder 1, a hob cutter 2 and a blade 3.

A tool rest 1 and a hob 2; a pen containing cavity 12 is arranged in the middle of the tool rest 1, an installation groove (not marked in the figure) for installing the hob 2 is arranged on the side surface of the tool rest, and the installation groove is communicated with the pen containing cavity 12; the hob 2 is rotatably arranged in the mounting groove;

the blade 3 is arranged on the tool rest 1, and the blade 3 extends to the pen accommodating cavity 12.

Blade 3's setting, after 2 sharpens pencil 5 at hobbing cutter, blade 3 carries out burring and saw-dust to pencil nib cone department and remains, guarantees that knife rest assembly sharpens pencil 5 back, and no burr and saw-dust remain on the pencil 5, when the staff grips pencil 5 and writes, no stinging hand and unsmooth sense, user experience feels good.

Preferably, the side surface of the tool holder 1 is provided with a blade groove 140, and the blade 3 is detachably disposed in the blade groove 140. Specifically, the cutter holder 1 is close to the hob 2 side and protrudes with a boss 14, and the blade groove 140 is opened on the boss 14; the blade 3 is provided with a through hole 30, and the boss 14 is provided with a threaded hole 141 at a position opposite to the through hole 30; a screw 4 is screwed into the screw hole 141 through the through hole 30 to fix the insert 3 in the insert pocket 140. The blade 3 is rectangular and comprises a cutting edge surface 31 and three positioning side surfaces 32; the boss 14 has a positioning wall 142 in a [ "shape, and the three positioning side surfaces 32 are attached to the positioning wall 142.

In the installation, blade 3 can be through three location side 32 and the location wall 142 cooperation location on the boss 14, and the installation accuracy of blade 3 is guaranteed to the restriction blade 3 a plurality of degrees of freedom, and can dismantle through screw 4 and fix on knife rest 1, after long-term the use, if blade 3 appears wearing and tearing, makes things convenient for the dismouting, changes blade 3.

The bottom of the pen containing cavity 12 is provided with a conical surface 120, the top of the pen containing cavity 12 is a cylindrical surface, the cutting edge surface 31 is arranged in an inclined manner relative to the axis of the conical surface 120, and the inclined angle of the cutting edge surface 31 is equal to the cone angle of the conical surface 120. The inclination angle of the cutting edge surface 31 on the blade 3 is set to be the same as the taper angle of the conical surface 120 arranged at the bottom of the pencil containing cavity 12, namely the cutting edge surface 31 is parallel to a part of generatrix on the conical surface 120, so that the blade 3 can not interfere with the pencil 5 in the pencil sharpening process, and the deburring and sawdust removing effects of the blade 3 are good; wherein, the knife rest 1 is close to the chip groove 15 has been seted up to the bottom of holding a chamber 12, chip groove 15 runs through knife rest 1, and the chip and the saw-dust that cut can be followed the chip groove 15 department of knife rest 1 bottom and in time discharged to prevent to make hobbing cutter 2 jamming.

Specifically, knife rest 1 is including support body 10, support body 10 upper portion is to 2 side convex lugs 11 of hobbing cutter, and support body 10 lower part is equipped with mount pad 101, mount pad 101 with lug 11 encloses into the mounting groove, hobbing cutter 2 is the slope setting for the axis of knife rest 1, and inclination equals the cone angle of conical surface 120, and hobbing cutter 2's inclination has also decided the tapering size of the nib of the pencil 5 of cutting, and hobbing cutter 2 includes the drive gear at top and the hobbing cutter edge of lower part, and hobbing cutter edge of hobbing cutter 2 is the heliciform setting, and the cutting effect is good.

A rotating shaft hole 102 is formed in each of the mounting seat 101 and the lug 11, and the hob 2 is hinged to the two rotating shaft holes 102 through a rotating shaft 6.

In the course of the work, insert pencil 5 in the appearance pencil chamber 12 in the knife rest 1 from the top of pencil sharpener, start pencil sharpener back, knife rest 1 is rotatory, and hobbing cutter 2 is rotatory, cuts 5 nibs of pencil gradually and be the toper, and burr and the sweeps near this toper are rejected by blade 3, cuts a complete, and saw-dust, burr, sweeps can be followed chip groove 15 and dropped.

In this scheme, this knife rest assembly cut a pencil thoroughly, and no saw-dust and burr remain, cut a pencil effectually, and user experience feels good.

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 knife rest component of a pencil sharpener is characterized by comprising:

a tool rest and a hob; a pen containing cavity is formed in the middle of the knife rest, an installation groove for installing the hob is formed in the side face of the knife rest, and the installation groove is communicated with the pen containing cavity; the hob is rotatably arranged in the mounting groove;

2. The sharpener assembly as recited in claim 1, wherein said blade holder defines a blade slot in a side surface thereof, said blade being removably disposed in said blade slot.

3. The holder assembly of claim 2, wherein said holder is provided with a projection adjacent to said hob side, said blade slot being formed in said projection; the blade is provided with a through hole, and the boss is provided with a threaded hole at a position opposite to the through hole; a screw is threadedly received in the threaded bore through the through hole to secure the insert in the insert pocket.

4. The sharpener carriage assembly of claim 3 wherein said blade is rectangular in configuration and includes a cutting edge surface and three locating side surfaces; the boss is provided with a [ -shaped positioning wall, and the three positioning side faces are attached to the positioning wall.

5. The sharpener assembly of claim 4 wherein said receptacle bottom has a tapered surface, said edge surface being inclined relative to the axis of said tapered surface, and the angle of inclination of said edge surface being equal to the angle of taper of said tapered surface.

6. The sharpener carriage assembly of claim 1 wherein said carriage defines a flute adjacent a bottom end of said receptacle cavity, said flute extending through said carriage.

7. The sharpener assembly as claimed in claim 1, wherein said sharpener assembly includes a holder body, said holder body having an upper portion with a protruding lug protruding toward said hob side, and a lower portion with a mounting seat, said mounting seat and said protruding lug defining said mounting slot.

8. The sharpener assembly of claim 7 wherein said mounting block and said lug each define a pivot bore, said roller being pivotally connected to said pivot bores by a pivot.