CN111497508A - Pencil sharpener mechanism with replaceable hob and visible sharpening tip and assembling method thereof - Google Patents
Pencil sharpener mechanism with replaceable hob and visible sharpening tip and assembling method thereof Download PDFInfo
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- CN111497508A CN111497508A CN202010352973.7A CN202010352973A CN111497508A CN 111497508 A CN111497508 A CN 111497508A CN 202010352973 A CN202010352973 A CN 202010352973A CN 111497508 A CN111497508 A CN 111497508A
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- hob
- rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/008—Sharpeners for pencils or leads with rotating cutting bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/02—Sharpeners for pencils or leads with gearing
- B43L23/04—Sharpeners for pencils or leads with gearing with cranked handles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/06—Sharpeners for pencils or leads in which the pencils or leads are sharpened by only axial movement against cutting blades
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Abstract
The invention relates to a pencil sharpener mechanism with replaceable hob cutters and visible sharpening tips, which comprises a cutter frame, a replaceable hob cutter assembly arranged on the lower side of the cutter frame, a pencil inlet arranged at the left end of the cutter frame, an inner gear ring arranged at the right end of the cutter frame, a rocking handle arranged on the right side of the inner gear ring, and a pointer visible assembly arranged on the right side of a rotary table of the rocking handle and inside the cutter frame, the inner gear ring and the rotary table. The right end of the tool rest plays a role of a rotating shaft and is respectively and rotationally connected with the inner gear ring and the rocking handle. The visual subassembly of pointer, including locating the slider in the slant guide rail of knife rest upside, the right side of slider can support and touch the pointer pole, and the cover has a spring in the pointer pole, and the left end of spring supports with the bulge loop in the pointer pole and supports, and the right-hand member of spring supports with the spring that overlaps in the pointer pole right-hand member and supports, and the right-hand member of pointer pole passes through in the pointer via hole of spring stopper, inserts in the visual window of back lid. The scheme has a simple structure, solves the problem that the hob in actual use cannot replace and cut the pen core, and brings the guarantee of material benefit and quality for users of the pencil sharpener.
Description
Technical Field
The invention relates to the technical field of pencil sharpener, in particular to a pencil sharpener mechanism with replaceable hob and visible sharpening and an assembling method thereof.
Background
The existing pencil sharpener tool rest is connected to the tool rest through the knurling stripes of the pin shaft and a strong mortise, the spiral hob cannot be replaced after being blunt, the whole pencil sharpener can only be scrapped, and the cost of a user is invisibly increased. Especially, the pencil amount for the fine arts students is very large, one hob can cut the blunt pencil and scrap the whole pencil sharpener in one month, because the fine arts students can use the pencil and the charcoal pencil with the long core, the pencil lead cutting amount of the long core is large, the charcoal pencil is hard, the pencil and the charcoal pencil which cut the long core can lead the knife edge of the spiral hob to be passivated quickly, and the service life of the hob is greatly reduced.
The pencil lead is cut off by a pencil charcoal pencil in the process of sharpening all pencil sharpeners on the market at present, which is a difficult point to be solved urgently by a hand-operated pencil sharpener, particularly under the condition that the pencil lead for art students is very long and very sharp. The existing pencil sharpener on the market cannot detect the real-time nib state in the pencil sharpening process, cannot test the sharp limit of each brand of pencil charcoal pencil, and leads to a great deal of resource waste because a user cannot know to continue sharpening the pencil after the pencil core is broken.
Therefore, the existing pencil sharpener has the following defects:
(1) the spiral hob can not be replaced after being blunt, and the pencil sharpener is scrapped, so that the user cost is increased;
(2) the real-time pen point state cannot be seen in the sharpening process, the sharp limit of each brand of pencil carbon pen cannot be tested, and the problem that the pencil lead is cut off due to the fact that sharpening is invisible is a difficult point which needs to be solved urgently by all pencil sharpeners.
In order to overcome the defects, the invention provides a pencil sharpener mechanism with replaceable hob cutters and visible sharpening and an assembling method thereof.
Disclosure of Invention
The invention aims to solve the problems that the existing pencil sharpener can not be replaced after a spiral hob is used and is scrapped, the user cost is increased, the pencil sharpener can not be visible in the pencil sharpening process, the sharp limit of each brand of pencil carbon pens can not be tested, and the pencil lead sharpening is a difficult point which needs to be solved urgently by all pencil sharpeners, and the specific solution is as follows:
the utility model provides a visual penknife mechanism of hobbing cutter interchangeable and sharpening, includes the knife rest, locates the interchangeable hobbing cutter subassembly of knife rest downside, locates the mouth of advancing a brush of knife rest left end, locates the ring gear of knife rest right-hand member, and the right side of ring gear is equipped with the rocking handle, and the carousel right side and the inside of knife rest, ring gear, carousel of rocking handle are equipped with the visual subassembly of pointer, and the right-hand member of knife rest plays the effect of pivot, rotates with ring gear, rocking handle respectively and is connected.
Further, interchangeable hobbing cutter subassembly, including the hobbing cutter, wear the hobbing cutter axle in the hobbing cutter shaft hole, the right-hand member of hobbing cutter axle is packed into in the first shaft hole of the first supporting block of knife rest right part, the left end of hobbing cutter axle is packed into in the second shaft hole of the second supporting block of knife rest left part, and exposes the arbor handle of its left end tip, and the lower extreme of second supporting block is equipped with a screw hole, and organic rice screw is equipped with in the screw hole, and this machine rice screw fastens the hobbing cutter axle. The two opposite sides of the lower ends of the first supporting block and the second supporting block are respectively provided with an inclined chamfer, so that the hob can be conveniently assembled and disassembled.
Furthermore, the right end of the hob is provided with a rotating gear, and the rotating gear is meshed with the inner gear on the inner side of the left end of the inner gear ring.
Further, the visual subassembly of pointer, including locating slider in the slant guide rail of knife rest upside, the right side of slider can support and touch the pointer pole, and the cover has a spring in the pointer pole, and the left end of spring supports with the bulge loop in the pointer pole and supports, and the right-hand member of spring supports with the spring that overlaps in the pointer pole right-hand member and supports, and the right-hand member of pointer pole passes through in the pointer via hole of spring stopper, then inserts in the visual window of back lid.
Furthermore, the oblique guide rail is parallel to the roller shaft, two sides of the sliding block are respectively provided with a guide rail groove, the two guide rail grooves are respectively inserted into the two oblique guide rails, and the upper side of the sliding block is provided with a convex block for marking and holding during assembly.
Furthermore, the pointer rod is divided into a left structure, a middle structure and a right structure, the left side is a one-third thin rod, the middle part is a convex ring, the right side is a two-thirds thick rod, the convex ring and the thick rod share the same axis, the thin rod is arranged on the upper side of the axis of the thick rod, the thin rod is inserted into a thin rod through hole arranged at the right end of the knife rest, the thick rod is inserted into a thick rod through hole arranged at the right end of the knife rest, an upward positioning convex point is arranged at the near left end of the thin rod, the pointer rod is prevented from sliding out of the thin rod through hole, and the sliding block is prevented from sliding out of the oblique guide rail.
Furthermore, the left end of the spring stop block is provided with an upper first buckle and a lower first buckle, the first buckles are respectively buckled with an upper mounting hole and a lower mounting hole which are arranged at the right end of the knife rest, the right end of the spring stop block is provided with a front positioning block and a rear positioning block, and the positioning blocks are respectively matched and connected with a front positioning groove and a rear positioning groove which are arranged at the right end of the knife rest; the right end face of the spring stop block is flush with the right end face of the tool rest.
Furthermore, the right part of the turntable of the rocking handle is provided with a locking mechanism along the periphery of the shaft hole of the rocking handle, the locking mechanism is designed by two groups of semicircles which are symmetrical relatively, each semicircle comprises an exposed position, an inclined position, a resistance position, a locking position and a limiting position which are connected with each other in sequence, wherein the exposed position is a gap, the inclined position is an inclined plane from low to high, the resistance position is an inclined plane from high to low, the locking position is a groove lower than the resistance position, the limiting position is a convex section higher than the locking position, the right end part of the knife rest is provided with an upper fixing buckle block and a lower fixing buckle block, the right end of the knife rest is sleeved in the internal gear shaft hole of the internal gear ring and then penetrates into the rocking handle shaft hole of the rocking handle, the fixed buckle block rotates to a resistance position along an inclined position from the exposed position and then rotates to a locking position, one side of the fixed buckle block abuts against the limiting position, and the other side of the fixed buckle block abuts against the resistance position, so that the tool rest, the inner gear ring and the rocking handle are mutually and rotatably connected together.
Further, the left side of back lid is equipped with a plurality of second buckles left, and second buckle card is gone into and is located in a plurality of knot holes on the carousel of rocking handle, the center of back lid is equipped with and indicates the pinhole, and the visual window is connected on the right side that indicates the pinhole, and the visual window is upper and lower opening, front and back both sides be equipped with multistage scale step, right-hand member for the structure of stopper, thick rod penetrates and indicates the pinhole, moves between pointer hole and visual window and stopper, and every level scale step represents a unit length of nib, and the step of multistage scale step reduces from a left side to the right side gradually.
Based on the assembling method of the pencil sharpener mechanism with replaceable hob cutters and visible sharpening, the assembling method is carried out according to the following steps:
step 9, aligning the hob shaft hole at the left end of the hob with a second shaft hole of a second supporting block, inserting the hob shaft into the second shaft hole of the second supporting block from the left side, penetrating the hob shaft hole, and entering a first shaft hole of a first supporting block, wherein the shaft handle with grains is exposed out of the second shaft hole;
and 11, inserting a pencil from a pencil inlet at the left end of the tool rest for testing, rotating the rocking handle, gradually sharpening the pencil point along with the gradual movement of the pencil to the right, pushing the right slider to the right by the pencil point to move to the right, pushing the pointer rod to move to the right by the right slider, gradually moving the right end of the thick rod to the right in the visual window, indicating the length of the pencil point at the moment by the multi-stage scale steps reached by the right end of the thick rod, testing to be qualified, and completing assembly.
In summary, the technical scheme of the invention has the following beneficial effects:
the pencil sharpener solves the problems that the existing pencil sharpener cannot be replaced after the spiral hob is blunt, the pencil sharpener is scrapped, the user cost is increased, the sharp limit of each brand of pencil charcoal pencil cannot be tested, and the pencil core is cut off due to invisible sharpening, so that all pencil sharpeners are difficult to solve urgently. The interchangeable hobbing cutter subassembly design of this scheme need not dismantle other parts, directly from between first supporting shoe and the second supporting shoe of knife rest downside, tears the change open, simple structure, and convenient operation can not make the penknife that the user purchased, scraps because of the hobbing cutter cuts blunt back, has saved user's use cost. The pointer visual component designed by the scheme has the advantages of being simple in structure and large in effect, solving the problem that the sharpening of all pencil sharpeners is urgently needed to solve, the pain point of the pencil lead is cut off due to the fact that sharpening is invisible, the length of the pencil point of the pencil is visible at any time in the pencil sharpening process, and the problem that the pencil lead is cut off is guaranteed not to occur. The pencil sharpening device is suitable for pencils and charcoal pens of various brands and has a learning function, and because hardness attributes of the pencils of each brand are different, particularly the charcoal pens, sharpening sharp limits are different, for example, when a user wants to sharpen the penpoint to be the sharpest, the user observes the positions of the pointer rod and the multi-level scale steps through eyes, keeps in the scale value of the limit, and accordingly ensures that the lead cannot be broken when the user sharpens the pencils. In a word, the scheme adopts a simple structure design, solves the problem that the pencil core is cut off due to the fact that a hob in the practical use is not replaced and sharpened invisible, and brings benefits and quality guarantee to users of the pencil sharpener.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a block diagram of a pencil sharpener mechanism with replaceable hob cutters and sharpening for viewing the sharpener of the present invention;
FIG. 2 is a cross-sectional view taken along the Y-plane from the center in FIG. 1;
FIG. 3 is an exploded view of a visual sharpener mechanism with replaceable and sharpenable hob cutters of the present invention;
FIG. 4 is a perspective view of a pencil sharpener mechanism with replaceable hob cutters and sharpening in accordance with the present invention;
FIG. 5 is a partial block diagram of the present invention;
fig. 6 is a structural view of an inner ring gear of the present invention;
FIG. 7 is a block diagram of the present invention;
FIG. 8 is a view of the construction of the rocking handle of the present invention;
FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;
fig. 10 is a structural view of the finger stick and the rear cover of the present invention.
Description of reference numerals:
1-knife rest, 2-inner gear ring, 3-rocking handle, 4-sliding block, 5-needle bar, 6-spring, 7-spring stop block, 8-rear cover, 10-pen inlet, 11-hob, 12-hob shaft, 13-machine rice screw, 14-inclined chamfer, 15-inclined guide rail, 16-mounting hole, 17-fixed buckle block, 18-positioning slot, 19-sliding block mounting hole, 20-screw hole, 21-inner tooth, 22-inner gear shaft hole, 30-buckle hole, 31-exposure vacancy, 32-inclined position, 33-resistance position, 34-locking position, 35-limit position, 36-rotary table, 37-rotary arm, 38-rotary handle, 39-handle shaft, 41-guide rail groove, 42-convex block,
43-chamfer, 51-convex ring, 52-positioning convex point, 53-thin rod, 54-thick rod, 71-first buckle, 72-positioning block, 73-pointer through hole, 80-second buckle, 81-visible window, 82-scale step, 83-limiting block, 84-pointer hole, 85-pointer guide ring, 101-first supporting block, 102-first shaft hole, 103-second supporting block, 104-second shaft hole, 105-thin rod through hole, 106-thick rod through hole, 111-rotating tooth, 121-shaft handle and 301-rocking handle shaft hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to understand the content of the present solution more easily, the following definitions are made: with reference to the viewer, the viewer faces the drawing sheet of fig. 3, with the front of the content being the portion of the drawing that is closer to the viewer, the back of the content being the portion of the drawing that is further from the viewer, the left of the content being the portion of the drawing that is to the left of the viewer, the right of the content being the portion of the drawing that is to the right of the viewer, the top of the content being the portion of the drawing that is to the top of the viewer, and the bottom of the content being the portion of the drawing that is to the bottom of the viewer.
As shown in fig. 1 to 10, a pencil sharpener mechanism with replaceable hob and visible sharpening function comprises a hob head 1, a replaceable hob component arranged on the lower side of the hob head 1, a pencil inlet 10 arranged on the left end of the hob head 1, and an inner gear ring 2 arranged on the right end of the hob head 1, wherein a rocking handle 3 (comprising a rotary disk 36, a rotary arm 37, a rotary handle 38 and a handle shaft 39) is arranged on the right side of the inner gear ring 2, a right side of the rotary disk 36 of the rocking handle 3, the hob head 1, the inner gear ring 2 and the inside of the rotary disk 36 are provided with a pointer visual component, and the right end of the hob head 1 plays a role of a rotary shaft and is respectively.
Further, the replaceable hob assembly comprises a hob 11, a hob shaft 12 penetrating through a shaft hole of the hob 11, a right end of the hob shaft 12 is installed in a first shaft hole 102 of a first support block 101 at the right part of the hob head 1, a left end of the hob shaft 12 is installed in a second shaft hole 104 of a second support block 103 at the left part of the hob head 1, a shaft handle 121 at the end part of the left end of the hob head is exposed, a screw hole 20 is arranged at a lower end of the second support block 103, a machine rice screw 13 is installed in the screw hole 20, and the hob shaft 12 is fastened by the machine rice screw 13. The two opposite sides of the lower ends of the first supporting block 101 and the second supporting block 103 are respectively provided with an inclined chamfer 14, so that the hob 11 can be conveniently assembled and disassembled.
Furthermore, the right end of the hob 11 is provided with a rotary gear 111, and the rotary gear 111 is engaged with the internal teeth 21 on the inner side of the left end of the ring gear 2.
Further, the pointer visual assembly comprises a sliding block 4 arranged in an inclined guide rail 15 on the upper side of the cutter rest 1, the right side of the sliding block 4 can abut against a pointer rod 5, a spring 6 is sleeved in the pointer rod 5, the left end of the spring 6 abuts against a convex ring 51 in the pointer rod 5, the right end of the spring 6 abuts against a spring blocking block 7 sleeved at the right end of the pointer rod 5, and the right end of the pointer rod 5 passes through a pointer through hole 73 of the spring blocking block 7 and then is inserted into a visual window 81 of the rear cover 8.
Further, the slant guide 15 is disposed parallel to the roller shaft 12, guide grooves 41 are respectively formed on both sides of the slider 4, the two guide grooves 41 are respectively inserted into the slant guide 15, and a protrusion 42 is formed on the upper side of the slider 4 for marking (as an indication of the upper portion) and holding during assembly. The lower portion of the slider 4 is provided with a chamfer 43 to facilitate entry of the slider 4 into the slider mounting hole 19 and to prevent interference with the hob 11.
Further, the pointer rod 5 is divided into a left structure, a middle structure and a right structure, the thin rod 53 with one third on the left side is provided with a convex ring 51 in the middle, the thick rod 54 with two thirds on the right side is provided with a convex ring 51 coaxial with the thick rod 54, the thin rod 53 is arranged on the upper side of the axis of the thick rod 54, the thin rod 53 is inserted into a thin rod through hole 105 arranged at the right end of the tool rest 1, the thick rod 54 is inserted into a thick rod through hole 106 arranged at the right end of the tool rest 1, and an upward positioning salient point 52 is arranged at the near left end of the thin rod 53 and used for preventing the pointer rod 5 from sliding out of the thin rod through hole 105 and preventing the sliding block 4 from sliding out of the inclined. The thin rods 53 can be designed as square rods or round rods, and the thick rods 54 as round rods.
Furthermore, the left end of the spring stop block 7 is provided with an upper first buckle 71 and a lower first buckle 71, the first buckles 71 are respectively fastened with the upper mounting hole 16 and the lower mounting hole 16 arranged at the right end of the knife rest 1, the right end of the spring stop block 7 is provided with a front positioning block 72 and a rear positioning block 72, the positioning blocks 72 are respectively connected with the front positioning groove 18 and the rear positioning groove 18 arranged at the right end of the knife rest 1 in a matching mode, and the right end face of the spring stop block 7 is flush with the right end face of the knife rest 1.
Furthermore, a locking mechanism is arranged at the right part of the rotating disc 36 of the rocking handle 3 along the periphery of the rocking handle shaft hole 301, the locking mechanism is designed into two groups of semi-circles which are relatively symmetrical, each semi-circle sequentially comprises an exposed position 31, an inclined position 32, a resistance position 33, a locking position 34 and a limiting position 35 which are connected with each other, wherein the exposed position 31 is a notch, the inclined position 32 is an inclined surface from low to high, the resistance position 33 is an inclined surface from high to low, the locking position 34 is a groove lower than the resistance position 33, the limiting position 35 is a convex section higher than the locking position 34, the end part of the right end of the knife rest 1 is provided with an upper fixed buckle block 17 and a lower fixed buckle block 17 (which are respectively designed to protrude upwards and downwards, the right end of the knife rest 1 is sleeved into the internal gear shaft hole 22 of the internal gear ring 2 and then penetrates into the rocking handle shaft hole 301 of the rocking handle 3, the fixed buckle block 17 penetrates out of the exposed position 31, is rotated to the resistance position 33 along the inclined, the other side is abutted against the resistance position 33, so that the tool rest 1, the inner gear ring 2 and the rocking handle 3 are mutually and rotatably connected together. The locking mechanism ensures the stability of the locking of the tool holder 1 with the rocking handle 3, and the concentricity of the rotary table 36 with the tool holder 1.
Further, the left side of back lid 8 is equipped with a plurality of second buckles 80 to the left, second buckle 80 blocks in locating a plurality of knot holes 30 on rocking handle 3's carousel 36, the center of back lid 8 is equipped with pointer hole 84, visual window 81 is connected on the right side of pointer hole 84, visual window 81 is upper and lower opening, front and back both sides are equipped with multistage scale step 82, the right-hand member is the structure of stopper 83, thick rod 54 penetrates pointer hole 84, move between pointer hole 84 and visual window 81 and stopper 83, each level scale step 82 represents a unit length of nib (for example, a scale is 1mm long), the step of multistage scale step 82, go down from a left side to the right side gradually, indicate the nib to sharpen gradually. For easy observation, the thick rod 54 is red, and for flexible movement of the pointer rod 5, a pointer guide ring 85 is provided on the left side of the rear cover 8. Optionally, the steps may also be printed with corresponding numerical indicia.
Based on the assembling method of the pencil sharpener mechanism with replaceable hob cutters and visible sharpening, the assembling method is carried out according to the following steps:
step 9, aligning the hob shaft hole at the left end of the hob 11 with the second shaft hole 104 of the second support block 103, inserting the hob shaft 12 into the second shaft hole 104 of the second support block 103 from the left side, penetrating through the hob shaft hole, and entering the first shaft hole 102 of the first support block 101, wherein the shaft handle 121 with the grains is exposed out of the second shaft hole 104 at this time;
The hob replacing method in the scheme comprises the following steps:
and 6, screwing the machine screw 13 into the screw hole 20, and screwing down by using a tool to lock the hob shaft 12.
The working process of the scheme is as follows:
after the pencil is inserted into the pencil inlet 10, along with the rotation of the rocking handle 3, the pencil is gradually sharpened, the pencil moves towards the right end, the sharpened pencil point pushes the sliding block 4 in the inclined guide rail 15 parallel to the hob 11 on the tool rest 1, the sliding block 4 moves towards the right end, the sliding block 4 pushes the pointer rod 5 to move towards the visual window 81 of the rear cover 8, the multi-level scale steps 82 of the rear cover 8 are marked from high to low towards the right end, the pointer rod 5 moves towards the right end, and the pencil point is sharper. When the finger rod 5 pushes up the limit limiting block 83 at the right end, the sharpness of the point of the pencil reaches the sharp limit, the user is prompted to finish pencil sharpening, and pencil sharpening is immediately stopped.
In summary, the technical scheme of the invention has the following beneficial effects:
the pencil sharpener solves the problems that the existing pencil sharpener cannot be replaced after the spiral hob is blunt, the pencil sharpener is scrapped, the user cost is increased, the sharp limit of each brand of pencil charcoal pencil cannot be tested, and the pencil lead is cut off due to invisible sharpening, so that all pencil sharpeners are difficult to solve urgently. The interchangeable hobbing cutter subassembly design of this scheme need not dismantle other parts, directly from between first supporting shoe 101 and the second supporting shoe 103 of knife rest 1 downside, tears down the change, simple structure, and convenient operation can not make the penknife that the user purchased, scraps because of hobbing cutter 11 cuts dull back, has saved user's use cost. The pointer visual component designed by the scheme has the advantages of being simple in structure and large in effect, solving the problem that sharpening which is urgently needed to be solved by all pencil sharpeners is invisible, so that pain points of pencil leads to sharpening off the pencil core, and at any time, the length of a pencil point of the pencil sharpener can be seen in the process of sharpening the pencil, and ensuring that the problem of sharpening off the pencil core cannot occur. The scheme is suitable for various brands of pencils and charcoal pencils and has a learning function, for the pencils with different hardness attributes, particularly the charcoal pencils, the sharpening sharp limit of each brand is different, for example, when a user wants to sharpen the penpoint to the sharpest point of the penpoint, the positions of the pointer rod 5 and the multi-level scale steps 82 are observed through eyes, the limit scale value is remembered firmly (when the penpoint reaches the limit scale value or pushes against the limit block 83, the pencil lead is cut off when the penpoint is continuously sharpened, at the moment, because the pointer rod 5 loses the acting force pushed to the right when the pencil sharpens, the pointer rod 5 rebounds to the left and prompts the lead breaking, the length of the pointer rod 5 rebounded to the left is equal to the length value of the lead breaking, the action matching process of the pointer rod 5 and the multi-level scale steps 82 can be observed through the visual window 81, and the scheme also has the functions of lead breaking prompt and accurate length of the lead breaking, thereby ensuring that the core cannot be broken when the pencil is cut. In a word, the scheme adopts a simple structure design, solves the problem that the pencil core is cut off due to the fact that a hob in the practical use is not replaced and sharpened invisible, and brings benefits and quality guarantee to users of the pencil sharpener.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. The utility model provides a hobbing cutter interchangeable with sharpen visual penknife mechanism which characterized in that: the pen-feeding device comprises a knife rest, a replaceable hob assembly arranged on the lower side of the knife rest, a pen inlet arranged at the left end of the knife rest, and an inner gear ring arranged at the right end of the knife rest, wherein a rocking handle is arranged on the right side of the inner gear ring, and a pointer visual assembly is arranged on the right side of a rotary table of the rocking handle and inside the knife rest, the inner gear ring and the rotary table; the right end of the tool rest plays a role of a rotating shaft and is respectively and rotationally connected with the inner gear ring and the rocking handle.
2. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 1, wherein: the replaceable hob assembly comprises a hob and a hob shaft penetrating through a hob shaft hole, the right end of the hob shaft is installed in a first shaft hole of a first support block at the right part of the hob head, the left end of the hob shaft is installed in a second shaft hole of a second support block at the left part of the hob head, a shaft handle at the end part of the left end of the hob shaft is exposed, a screw hole is formed in the lower end of the second support block, and a machine rice screw is installed in the screw hole and fastens the hob shaft; the two opposite sides of the lower ends of the first supporting block and the second supporting block are respectively provided with an inclined chamfer, so that the hob can be conveniently assembled and disassembled.
3. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 2, wherein: and the right end of the hob is provided with a rotating gear, and the rotating gear is meshed with the inner gear on the inner side of the left end of the inner gear ring.
4. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 3, wherein: the pointer visual assembly comprises a sliding block arranged in an inclined guide rail on the upper side of the knife rest, the right side of the sliding block can abut against a pointer rod, a spring is sleeved in the pointer rod, the left end of the spring abuts against a convex ring in the pointer rod, the right end of the spring abuts against a spring blocking block sleeved at the right end of the pointer rod, the right end of the pointer rod passes through a pointer via hole of the spring blocking block and then is inserted into a visual window of the rear cover.
5. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 4, wherein: the oblique guide rails are arranged in parallel with the roller shafts, guide rail grooves are respectively formed in two sides of each sliding block, the two guide rail grooves are respectively inserted into the two oblique guide rails, and protruding blocks are arranged on the upper sides of the sliding blocks and used for marking and holding the sliding blocks in hand during assembly.
6. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 5, wherein: the utility model discloses a finger rod, including the guide pin pole, the finger rod is divided into left and right structure, and the left side is one-third thin pole, and the centre is the bulge loop, and the right is two-thirds thick pole, and the bulge loop is coaxial with thick pole, and thin pole is on the upper side in the axis setting of thick pole, and thin pole inserts in the thin pole through-hole that the knife rest right-hand member set up, thick pole inserts in the thick pole through-hole that the knife rest right-hand member set up, the nearly left end of thin pole is equipped with an ascending location bump for prevent that the finger rod from following roll-off in the thin pole through-hole, and prevent the slider is followed roll-off.
7. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 6, wherein: the left end of the spring stop block is provided with an upper first buckle and a lower first buckle, the first buckles are respectively buckled with an upper mounting hole and a lower mounting hole which are arranged at the right end of the knife rest, the right end of the spring stop block is provided with a front positioning block and a rear positioning block, and the positioning blocks are respectively matched and connected with a front positioning groove and a rear positioning groove which are arranged at the right end of the knife rest; the right end face of the spring stop block is flush with the right end face of the tool rest.
8. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 7, wherein: the right part of the turntable of the rocking handle is provided with a locking mechanism along the periphery of a shaft hole of the rocking handle, the locking mechanism is designed into two groups of semi-circles which are relatively symmetrical, each semi-circle sequentially comprises an exposed position, an inclined position, a resistance position, a locking position and a limiting position which are connected with each other, the exposed position is a notch, the inclined position is an inclined surface from low to high, the resistance position is an inclined surface from high to low, the locking position is a groove lower than the resistance position, the limiting position is a convex joint higher than the locking position, the end part of the right end of the tool rest is provided with an upper fixed buckle block and a lower fixed buckle block, the right end of the tool rest is sleeved into the inner gear shaft hole of the inner gear ring and then penetrates into the shaft hole of the rocking handle, the fixed buckle blocks are rotated to the resistance position along the inclined position from the exposed position and then rotated to the locking position, one side of the fixed buckle blocks is abutted against the limiting position, and the other side.
9. The visual sharpener mechanism for roller cutters replaceable and sharpeners of claim 8, wherein: the left side of back lid is equipped with a plurality of second buckles left, and second buckle card is gone into and is located in a plurality of knot holes on the carousel of rocking handle, the center of back lid is equipped with and indicates the pinhole, but indicates the right side connection visual window of pinhole, but the visual window be upper and lower opening, front and back both sides be equipped with multistage scale step, right-hand member for the structure of stopper, thick pole penetrates and indicates the pinhole, moves between pointer hole and visual window and stopper, and every level scale step represents a unit length of nib, and the step of multistage scale step reduces from a left side turning right gradually.
10. The method for assembling a hob replaceable and sharpening visual sharpener mechanism according to claim 9, wherein the steps of:
step 1, a lug of a hand-held slide block extends into a slide block mounting hole of a tool rest, and two guide rail grooves slide leftwards and are arranged in two inclined guide rails;
step 2, inserting the thin rod of the needle rod into the thin rod through hole slightly by force from the right end of the tool rest, inserting the thick rod into the thick rod through hole, and positioning the salient point at the left end of the thin rod through hole;
step 3, sleeving the spring into the thick rod from the thick rod end of the pointer rod, wherein the left end of the spring abuts against the convex ring;
step 4, sleeving a spring blocking block into the thick rod from the right end of the thick rod of the pointer rod to abut against the right end of the spring, buckling two first buckles into two mounting holes of the tool rest, installing two positioning blocks into two positioning grooves of the tool rest, exposing the right end of the thick rod out of the right side of the pointer through hole, enabling the pointer rod to move along the axial direction of the thick rod, and applying leftward moving thrust to the pointer rod by the elastic force of the spring all the time;
step 5, sleeving the right end of the tool rest into an internal gear shaft hole of the internal gear ring;
step 6, enabling a fixed buckle block at the right end of the tool rest to penetrate into an exposed position of a rotary table of the rocking handle, rotating along an inclined position, continuously rotating to pass through a resistance position, reaching a locking position, and fixing the locking position and a limiting position;
step 7, the rear cover is sleeved into the right end of the thick rod of the pointer rod from the right side, the thick rod is inserted into the visual window through the pointer hole, the thick rod can axially move in the visual window, and the second buckle of the rear cover is buckled into the buckle hole of the turntable and fixed;
step 8, assembling the hob cutter between the first supporting block and the second supporting block at the lower side of the hob holder at an inclination angle of 15 degrees, and firstly, installing the rotating teeth into the inner teeth of the inner gear ring to enable the rotating teeth to be meshed with the inner teeth;
step 9, aligning the hob shaft hole at the left end of the hob with a second shaft hole of a second supporting block, inserting the hob shaft into the second shaft hole of the second supporting block from the left side, penetrating the hob shaft hole, and entering a first shaft hole of a first supporting block, wherein the shaft handle with grains is exposed out of the second shaft hole;
step 10, screwing the machine rice screw into the screw hole, and screwing down the machine rice screw by using a tool to lock the hob shaft;
and 11, inserting a pencil from a pencil inlet at the left end of the tool rest for testing, rotating the rocking handle, gradually sharpening the pencil point along with the gradual movement of the pencil to the right, pushing the right slider to the right by the pencil point to move to the right, pushing the pointer rod to move to the right by the right slider, gradually moving the right end of the thick rod to the right in the visual window, indicating the length of the pencil point at the moment by the multi-stage scale steps reached by the right end of the thick rod, testing to be qualified, and completing assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352973.7A CN111497508A (en) | 2020-04-29 | 2020-04-29 | Pencil sharpener mechanism with replaceable hob and visible sharpening tip and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010352973.7A CN111497508A (en) | 2020-04-29 | 2020-04-29 | Pencil sharpener mechanism with replaceable hob and visible sharpening tip and assembling method thereof |
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| CN111497508A true CN111497508A (en) | 2020-08-07 |
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| CN202010352973.7A Withdrawn CN111497508A (en) | 2020-04-29 | 2020-04-29 | Pencil sharpener mechanism with replaceable hob and visible sharpening tip and assembling method thereof |
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| CN (1) | CN111497508A (en) |
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