阅读说明：本技术 一种可调节式的转笔刀 (Adjustable pencil sharpener ) 是由 聂开宇 聂思涵 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种可调节式的转笔刀,属于削铅笔技术领域,包括壳体和抽屉盒,所述抽屉盒的一端穿插在所述壳体的底部,所述壳体的内部设置有导向帽,所述导向帽的一侧设置有卷刀,所述卷刀的转轴两端分别固定有滑球,所述导向帽的一端外表面固定有支座,所述支座的自由端滑动套设在一个所述滑球的表面,所述卷刀远离所述支座的一端所述滑球的表面滑动套设有支环,所述卷刀靠近所述支环的一端转轴末端固定有第一齿轮,所述第一齿轮的外侧设置有齿套,所述齿套靠近所述卷刀的一端内侧壁与所述第一齿轮啮合连接。本发明中,通过倾角调节机构可以改变卷刀与导向帽的夹角,进而调整成型后笔尖的粗细,通过长度调节机构可以控制铅笔笔尖的切屑长度。(The invention discloses an adjustable pencil sharpener, which belongs to the technical field of pencil sharpening and comprises a shell and a drawer box, wherein one end of the drawer box is inserted at the bottom of the shell, a guide cap is arranged inside the shell, a sharpener is arranged on one side of the guide cap, sliding balls are respectively fixed at two ends of a rotating shaft of the sharpener, a support is fixed on the outer surface of one end of the guide cap, the free end of the support is slidably sleeved on the surface of one sliding ball, a support ring is slidably sleeved on the surface of the sliding ball at one end of the sharpener far away from the support, a first gear is fixed at the tail end of the rotating shaft at one end of the sharpener close to the support ring, a gear sleeve is arranged on the outer side of the first gear, and the inner side wall of one end of the gear sleeve close to the sharpener is meshed with the first gear. According to the pencil sharpener, the included angle between the sharpener and the guide cap can be changed through the inclination angle adjusting mechanism, so that the thickness of the formed pencil point is adjusted, and the cutting length of the pencil point can be controlled through the length adjusting mechanism.)

1. The adjustable pencil sharpener comprises a shell (1) and a drawer box (2), and is characterized in that one end of the drawer box (2) is inserted into the bottom of the shell (1), a guide cap (3) is arranged inside the shell (1), a rolling cutter (4) is arranged on one side of the guide cap (3), sliding balls (5) are fixed at two ends of a rotating shaft of the rolling cutter (4) respectively, a support (6) is fixed on the outer surface of one end of the guide cap (3), a free end of the support (6) is slidably sleeved on the surface of one sliding ball (5), one end of the rolling cutter (4), which is far away from the support (6), of the sliding ball (5) is slidably sleeved with a support ring (7), a first gear (8) is fixed at the tail end of the rotating shaft of one end, which is close to the support ring (7), of the rolling cutter (4), a tooth sleeve (9) is arranged on the outer side of the first gear (8), the utility model discloses a gear sleeve, including gear sleeve (9), sleeve (10), first spring (12), first cover axle (13), one end of first cover axle (13) is run through first cover axle (11) and outer fixed surface is connected, the gear sleeve (9) be close to the one end inside wall of book sword (4) with first gear (8) meshing connection, the surface slip cover of gear sleeve (9) is equipped with sleeve pipe (10), sleeve pipe (10) keep away from the one end of gear sleeve (9) is run through one side inner wall and the end of casing (1) is fixed with first turning handle (11), sleeve pipe (10) with the lateral wall threaded connection of casing (1), first turning handle (11) and outer fixed surface are connected with first spring (12) between gear sleeve (9), rotate in the inner chamber of gear sleeve (9) and be connected with first cover axle (13), the one end of first cover axle (13) is run through first turning handle (11) and outer fixed surface is connected with turns handle (14), first cover axle (13) with first turning handle (11) swing joint, install inclination adjustment mechanism in first cover axle (13), the inclination angle adjusting mechanism comprises a second sleeve shaft (151), a fluted disc (152), a second gear (153), a second rotating handle (154) and a threaded rod (155), the second sleeve shaft (151) is rotationally nested in an inner cavity of the first sleeve shaft (13), the fluted disc (152) is fixed at one end, close to the first gear (8), of the second sleeve shaft (151), the second rotating handle (154) is fixed at one end, far away from the first gear (8), of the second sleeve shaft (151), one end of the threaded rod (155) is fixedly connected with the second gear (153), the other end of the threaded rod (155) penetrates through the inner wall of the first sleeve shaft (13), extends to the outside and is connected with the outer wall of the support ring (7) in a rotating manner, the second gear (153) is connected with the fluted disc (152) in a meshing manner, and the threaded rod (155) is connected with the side wall of the first sleeve shaft (13) in a threaded manner, a length adjusting mechanism is installed in the second sleeve shaft (151), the length adjusting mechanism comprises a third sleeve shaft (161), a fourth sleeve shaft (162), a third rotating handle (163) and a baffle (164), the third sleeve shaft (161) is rotatably nested in an inner cavity of the second sleeve shaft (151), one end of the fourth sleeve shaft (162) is nested in an inner cavity of one end of the third sleeve shaft (161) through threads, the outer surface of the fourth sleeve shaft (162) is in sliding connection with the inner wall of the second sleeve shaft (151) through a support lug, one end, far away from the third sleeve shaft (161), of the fourth sleeve shaft (162) penetrates through a central hole and the tail end of the fluted disc (152) and is fixedly connected with the baffle (164), one end, far away from the fourth sleeve shaft (162), of the third sleeve shaft (161) penetrates through a central hole and the tail end of the second rotating handle (154) and is fixedly connected with the third rotating handle (163), the guide cap (3) is fixedly connected with the first sleeve shaft (13) through a support.

2. The adjustable pencil sharpener according to claim 1, wherein a through hole (17) is formed in the inner wall of the other side of the housing (1), the through hole (17) corresponds to the guide cap (3), a branch pipe (18) is fixed at the edge of one side of the through hole (17) close to the guide cap (3), a plurality of clamping plates (19) are respectively and symmetrically and rotatably connected to one end of the branch pipe (18) close to the guide cap (3), a slip ring (20) is slidably connected to the outer surface of the branch pipe (18), a plurality of connecting rods (21) are respectively arranged between the slip ring (20) and the plurality of clamping plates (19), two ends of the plurality of connecting rods (21) are respectively and rotatably connected to the side wall of the slip ring (20) and the top ends of the plurality of clamping plates (19), and a second spring (22) is fixed between the slip ring (20) and the inner side wall of the housing (1), the second spring (22) is sleeved on the outer surface of the branch pipe (18) in a sliding mode, a sliding rod (23) is fixed to the top of the sliding ring (20), the free end of the sliding rod (23) penetrates through a sliding groove in the top wall of the shell (1), a sliding block (24) is fixed to the tail end of the sliding rod, and the sliding rod (23) is connected with the sliding groove in the top wall of the shell (1) in a sliding mode.

3. The adjustable pencil sharpener according to claim 2, wherein two guide plates (25) are symmetrically arranged between the drawer box (2) and the sharpener (4), and the two guide plates (25) are respectively fixedly connected with the inner wall of the casing (1) and are inclined downwards.

4. The adjustable pencil sharpener of claim 3, wherein a protective cover (26) is arranged on one side of the rotating handle (14) close to the second rotating handle (154), and the protective cover (26) is in threaded connection with the outer surface of the first sleeve shaft (13).

5. The adjustable pencil sharpener according to claim 4, wherein a groove (27) is formed in one side, close to the guide cap (3), of the baffle (164), and the groove (27) is arc-shaped in cross section and frosted in surface.

6. The adjustable pencil sharpener according to claim 5, wherein one end of the guide cap (3) close to the branch pipe (18) is cylindrical, one end of the guide cap (3) far away from the branch pipe (18) is conical, a notch is formed in one side of the guide cap (3) close to the sharpener (4), the outer wall of the sharpener (4) penetrates through the notch in the guide cap (3) to extend into the interior, and a plurality of groups of spiral cutting edges are formed in the sharpener (4).

7. The adjustable pencil sharpener of claim 6, wherein the first gear (8) and the gear sleeve (9) are both provided with helical teeth with larger tooth height, and the threaded rod (155) is connected with the first sleeve shaft (13) through fine threads.

8. The adjustable sharpener of claim 7, wherein the circumferential surfaces of the first, second, and third knobs (11, 154, 163) are textured.

9. The adjustable pencil sharpener of claim 8, wherein the clamping plate (19) is arc-shaped, and the arc surface of the clamping plate (19) is scored.

Technical Field

The invention belongs to the technical field of pencil sharpening, and particularly relates to an adjustable pencil sharpener.

Background

Pencil sharpener is also called pencil sharpener or pencil sharpener, and is a tool for sharpening pencils. The pencil sharpener can be divided into a hand-operated type and a rotary type, the hand-operated pencil sharpener can store pencil scraps due to the pencil sharpener with the scrap storage box, is deeply favored by users, is high in scrap cutting efficiency and large in rotating torque, and is particularly suitable for primary school students.

However, the existing hand-operated pencil sharpener adopts a fixed design and has no adjusting function, so that primary students who write for beginners cannot master the thickness and length of the pencil point of the cutting pencil core skillfully, the cut pencil is too thick or too sharp and is not suitable for writing, and the pencil is abnormally worn due to repeated cutting, thereby wasting time and energy and wasting resources.

Disclosure of Invention

The invention aims to: the adjustable pencil sharpener aims to solve the problem that a pupil who is just studying cannot master the thickness and the length of a pencil point of a cutting pencil core skillfully due to the fact that no adjusting function exists in the prior art, and the adjustable pencil sharpener is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

an adjustable pencil sharpener comprises a shell and a drawer box, wherein one end of the drawer box is inserted into the bottom of the shell, a guide cap is arranged inside the shell, a sharpener is arranged on one side of the guide cap, sliding balls are respectively fixed at two ends of a rotating shaft of the sharpener, a support is fixed on the outer surface of one end of the guide cap, a free end of the support is slidably sleeved on the surface of one sliding ball, a support ring is slidably sleeved at one end of the sharpener far away from the support, a first gear is fixed at the tail end of the rotating shaft at one end of the sharpener close to the support ring, a tooth sleeve is arranged on the outer side of the first gear, the inner side wall of one end of the tooth sleeve close to the sharpener is connected with the first gear in a meshed mode, a sleeve is slidably sleeved on the outer surface of the tooth sleeve, one end of the sleeve far away from the tooth sleeve penetrates through the inner wall of one side of the shell, and a first rotary handle is fixed at the tail end of the tooth sleeve, the sleeve is in threaded connection with the side wall of the shell, a first spring is fixedly connected between the first rotating handle and the gear sleeve, a first sleeve shaft is rotatably connected in an inner cavity of the gear sleeve, one end of the first sleeve shaft penetrates through the first rotating handle, a rotating handle is fixedly connected to the outer surface of the first sleeve shaft, the first sleeve shaft is movably connected with the first rotating handle, an inclination angle adjusting mechanism is installed in the first sleeve shaft and comprises a second sleeve shaft, a fluted disc, a second gear, a second rotating handle and a threaded rod, the second sleeve shaft is rotatably embedded in the inner cavity of the first sleeve shaft, the fluted disc is fixed at one end, close to the first gear, of the second sleeve shaft, the second rotating handle is fixed at one end, far away from the first gear, of the threaded rod is fixedly connected with the second gear, the other end of the threaded rod penetrates through the inner wall of the first sleeve shaft and extends to the outside, and the tail end of the threaded rod is rotatably connected with the outer wall of the supporting ring, the second gear is meshed with the fluted disc, the threaded rod is in threaded connection with the side wall of the first sleeve shaft, a length adjusting mechanism is arranged in the second sleeve shaft and comprises a third sleeve shaft, a fourth sleeve shaft, a third rotating handle and a baffle plate, the third sleeve shaft is rotatably nested in the inner cavity of the second sleeve shaft, one end of the fourth sleeve shaft is nested in the inner cavity of one end of the third sleeve shaft through threads, the outer surface of the fourth sleeve shaft is connected with the inner wall of the second sleeve shaft in a sliding manner through a support lug, one end of the fourth sleeve shaft, which is far away from the third sleeve shaft, penetrates through the central hole of the fluted disc, and the tail end of the fourth sleeve shaft is fixedly connected with the baffle, one end, far away from the fourth sleeve shaft, of the third sleeve shaft penetrates through a center hole of the second rotating handle, the tail end of the third rotating handle is fixedly connected with the third rotating handle, and the guide cap is fixedly connected with the first sleeve shaft through a support.

As a further improvement of the above technical solution:

a through hole is arranged on the inner wall of the other side of the shell, the through hole corresponds to the guide cap, a branch pipe is fixed at one side edge of the through hole close to the guide cap, one end of the branch pipe close to the guide cap is respectively and symmetrically and rotatably connected with a plurality of clamping plates, the outer surface of the branch pipe is connected with a slip ring in a sliding way, a plurality of connecting rods are respectively arranged between the slip ring and the plurality of clamping plates, the two ends of the plurality of connecting rods are respectively connected with the side wall of the slip ring and the top ends of the plurality of clamping plates in a rotating way, a second spring is fixed between the slip ring and the inner side wall of the shell and is sleeved on the outer surface of the branch pipe in a sliding manner, a sliding rod is fixed at the top of the sliding ring, the free end of the sliding rod penetrates through a sliding groove in the top wall of the shell, a sliding block is fixed at the tail end of the sliding rod, and the sliding rod is in sliding connection with the sliding groove in the top wall of the shell.

Two guide plates are symmetrically arranged between the drawer box and the rolling knife, and the two guide plates are fixedly connected with the inner wall of the shell respectively and are inclined downwards.

And a protective cover is arranged on one side of the rotating handle close to the second rotating handle, and the protective cover is in threaded connection with the outer surface of the first sleeve shaft.

One side of the baffle, which is close to the guide cap, is provided with a groove, and the cross section of the groove is arc-shaped and the surface of the groove is frosted.

The one end that the direction cap is close to the branch pipe is cylindrical, the one end that the direction cap kept away from the branch pipe is conical, the direction cap is close to one side of book sword is seted up jaggedly, the outer wall of book sword passes breach on the direction cap extends to inside, set up multiunit helical cutting edge on the book sword.

The first gear and the gear sleeve adopt helical teeth with larger tooth height, and the threaded rod and the first sleeve shaft are connected by fine threads.

The circumferential surfaces of the first rotating handle, the second rotating handle and the third rotating handle are provided with anti-skid lines.

The clamping plate is arc-shaped, and the arc surface of the clamping plate is provided with nicks.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, through the arrangement of the clamping plates, the connecting rods, the sliding ring and the second spring, a pencil is inserted into the branch pipe through the through hole, the pencil head abuts against the clamping plates to deflect outwards around the tail end of the branch pipe, the clamping plates respectively push the connecting rods to press the sliding ring to move leftwards along the surface of the branch pipe and compress the second spring, meanwhile, the pencil head is inserted into the guide cap and continuously abuts against the guide cap to push the first sleeve shaft to drive the tooth sleeve to move rightwards along the inner wall of the sleeve pipe and compress the first spring, when the pencil is stopped to be pushed rightwards, the first spring rebounds to push the sliding ring to respectively press the clamping plates to deflect inwards around the tail end of the branch pipe, so that the surface of the pencil is clamped, and the effect of automatically clamping the pencil is achieved.

2. According to the pencil sharpener, the second rotating handle, the second sleeve shaft, the fluted disc and the threaded rod are arranged, the second rotating handle is rotated to drive the second sleeve shaft and the fluted disc to rotate, the fluted disc is meshed with the second gear to drive the threaded rod to rotate, the threaded rod moves along the side wall of the first sleeve shaft through threads, the support ring drives the sliding ball to change the position along with the threaded rod, the rotating shaft of the sharpener is driven to deflect around the support through the sliding ball, namely, the angle between the sharpener and the guide cap is changed, the radial distance between the pencil inserted into the guide cap and the sharpener is changed, and the thickness degree of the pencil point of the cut pencil can be changed.

3. According to the invention, through the third rotating handle, the third sleeve shaft, the fourth sleeve shaft and the baffle, the third rotating handle is rotated to drive the third sleeve shaft to rotate in the second sleeve shaft, so that the fourth sleeve shaft in threaded connection in the third sleeve shaft slides along the inner wall of the second sleeve shaft through the support lug, the baffle is driven to move, the position of the baffle abutting against the pencil point is changed, on one hand, the effect of changing the length of the cut pencil point is achieved, on the other hand, abnormal cutting loss of a pencil can be prevented, and waste is reduced.

4. According to the pencil, the baffle plate and the groove are arranged, the baffle plate rotates along with the first sleeve shaft, the arc-shaped groove is used for abutting against the pencil point, the frosted surface is used for polishing the pencil point, the cut pencil point is smooth and round, paper is not easy to scratch, and the writing comfort is improved.

Drawings

FIG. 1 is a perspective view of an adjustable pencil sharpener of the present invention;

FIG. 2 is a left front perspective cross-sectional view of an adjustable pencil sharpener of the present invention;

FIG. 3 is an enlarged view of the adjustable pencil sharpener of FIG. 2 at A;

FIG. 4 is a front cross-sectional view of an adjustable pencil sharpener of the present invention;

FIG. 5 is a front cross-sectional view of an adjustable mechanism for adjusting the tilt angle and the length of a pencil sharpener according to the present invention;

FIG. 6 is an enlarged view of the adjustable pencil sharpener of FIG. 5 at B;

FIG. 7 is a front right perspective view of an adjustable pencil sharpener of the present invention;

FIG. 8 is an enlarged view of the adjustable pencil sharpener of FIG. 7 at C;

fig. 9 is an enlarged perspective view of the first gear and the gear sleeve of the adjustable pencil sharpener of the present invention.

Illustration of the drawings:

1. a housing; 2. a drawer box; 3. a guide cap; 4. rolling a cutter; 5. a sliding ball; 6. a support; 7. a branch ring; 8. a first gear; 9. a gear sleeve; 10. a sleeve; 11. a first stem; 12. a first spring; 13. a first sleeve shaft; 14. turning a handle; 151. a second sleeve shaft; 152. a fluted disc; 153. a second gear; 154. a second stem; 155. a threaded rod; 161. a third sleeve shaft; 162. a fourth sleeve shaft; 163. a third stem; 164. a baffle plate; 17. a through hole; 18. a branch pipe; 19. a splint; 20. a slip ring; 21. a connecting rod; 22. a second spring; 23. a slide bar; 24. a slider; 25. a guide plate; 26. a protective cover; 27. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

As shown in fig. 1-9, the adjustable pencil sharpener of the present embodiment includes a casing 1 and a drawer box 2, wherein one end of the drawer box 2 is inserted into the bottom of the casing 1 to facilitate drawing out the drawer box 2 to dump the cutting dust, a convenient fixed connection measure is provided between the drawer box 2 and the bottom wall of the casing 1 to prevent the drawer box 2 from naturally sliding down, which is not described in detail in the prior art, a guide cap 3 is provided inside the casing 1, a sharpener 4 is provided on one side of the guide cap 3, sliding balls 5 are respectively fixed on two ends of a rotating shaft of the sharpener 4, a support 6 is fixed on an outer surface of one end of the guide cap 3, a free end of the support 6 is slidably sleeved on a surface of one sliding ball 5, a support ring 7 is slidably sleeved on a surface of the sliding ball 5 at one end of the sharpener 4 away from the support 6, a first gear 8 is fixed on a rotating shaft end of the sharpener 4 close to the support ring 7, a gear sleeve 9 is provided on an outer side of the first gear 8, the inner side wall of one end, close to the rolling cutter 4, of the gear sleeve 9 is connected with the first gear 8 in a meshed mode, the outer surface of the gear sleeve 9 is sleeved with a sleeve 10 in a sliding mode, one end, far away from the gear sleeve 9, of the sleeve 10 penetrates through the inner wall of one side of the shell 1, and the tail end of the inner wall of one side of the shell 1 is fixedly provided with a first rotating handle 11, the sleeve 10 is in threaded connection with the side wall of the shell 1, the first rotating handle 11 is conveniently rotated to drive the sleeve 10 to move along the side wall of the shell 1, the lower sleeve 10, the gear sleeve 9, the guide cap 3 and the rolling cutter 4 are disassembled to facilitate cleaning and maintenance, a first spring 12 is fixedly connected between the first rotating handle 11 and the gear sleeve 9, a first sleeve shaft 13 is rotatably connected in an inner cavity of the gear sleeve 9, one end of the first sleeve shaft 13 penetrates through the first rotating handle 11 and is fixedly connected with a rotating handle 14, the first sleeve shaft 13 is movably connected with the first rotating handle 11, an inclination angle adjusting mechanism is installed in the first sleeve shaft 13, and comprises a second sleeve shaft 151, The second sleeve shaft 151 is rotatably nested in the inner cavity of the first sleeve shaft 13, the fluted disc 152 is fixed at one end of the second sleeve shaft 151 close to the first gear 8, the second rotating handle 154 is fixed at one end of the second sleeve shaft 151 far away from the first gear 8, one end of the threaded rod 155 is fixedly connected with the second gear 153, the other end of the threaded rod 155 extends to the outside through the inner wall of the first sleeve shaft 13 and the tail end is rotatably connected with the outer wall of the support ring 7, the second gear 153 is meshed with the fluted disc 152, the threaded rod 155 is in threaded connection with the side wall of the first sleeve shaft 13, the second sleeve shaft 151 and the fluted disc 152 are driven to rotate by rotating the second rotating handle 154, the threaded rod 155 is driven to rotate by meshing the second gear 153 through the fluted disc 152, the threaded rod 155 moves along the side wall of the first sleeve shaft 13 through threads, so that the support ring 7 drives the sliding ball 5 to change position along with the threaded rod 155, thereby driving the rotating shaft of the sharpener 4 to deflect around the support 6 through the sliding ball 5, namely changing the angle between the sharpener 4 and the guide cap 3, so that the radial distance between the pencil inserted into the guide cap 3 and the cutting edge of the sharpener 4 is changed, and the thickness of the cutting pencil core is convenient to control, a length adjusting mechanism is installed in the second sleeve shaft 151, the length adjusting mechanism comprises a third sleeve shaft 161, a fourth sleeve shaft 162, a third rotating handle 163 and a baffle 164, the third sleeve shaft 161 is rotatably nested in the inner cavity of the second sleeve shaft 151, one end of the fourth sleeve shaft 162 is nested in the inner cavity of one end of the third sleeve shaft 161 through threads, the outer surface of the fourth sleeve shaft 162 is slidably connected with the inner wall of the second sleeve shaft 151 through a support lug, one end of the fourth sleeve shaft 162 far away from the third sleeve shaft 161 penetrates through the central hole of the fluted disc 152 and the tail end is fixedly connected with the baffle 164, one end of the third sleeve shaft 161 far away from the central hole of the fourth sleeve shaft 162 penetrates through the central hole of the second rotating handle 154 and the tail end is fixedly connected with the third rotating handle 163, the guide cap 3 passes through support and first sleeve shaft 13 fixed connection, drive third sleeve shaft 161 at second sleeve shaft 151 internal rotation through rotating third turning handle 163, make threaded connection slide along the inner wall of second sleeve shaft 151 at fourth sleeve shaft 162 in third sleeve shaft 161 through the journal stirrup, it also along with removing to drive baffle 164, make the pencil nib support baffle 164, play the effect that prevents first spring 12 kick-back promotion tooth cover 9 and sharpener 4 and continue to remove the pencil that cuts left, be convenient for control the length of cutting the pencil refill, prevent abnormal loss.

As shown in fig. 1, 2, 4, 7 and 8, a through hole 17 is formed on the inner wall of the other side of the housing 1, the through hole 17 corresponds to the position of the guide cap 3, a branch pipe 18 is fixed at the edge of one side of the through hole 17 close to the guide cap 3, a plurality of clamping plates 19 are respectively and symmetrically connected to one end of the branch pipe 18 close to the guide cap 3, a slip ring 20 is slidably connected to the outer surface of the branch pipe 18, a plurality of connecting rods 21 are respectively arranged between the slip ring 20 and the plurality of clamping plates 19, two ends of the plurality of connecting rods 21 are respectively and rotatably connected to the side wall of the slip ring 20 and the top ends of the plurality of clamping plates 19, a second spring 22 is fixed between the slip ring 20 and the inner side wall of the housing 1, the second spring 22 is slidably sleeved on the outer surface of the branch pipe 18, a slide bar 23 is fixed at the top of the slip ring 20, a free end of the slide bar 23 passes through a slide groove on the top wall of the housing 1, and a slide block 24 is slidably connected to the slide groove on the top wall of the housing 1, the pencil is inserted into the branch pipe 18 through the through hole 17 and simultaneously withstands the plurality of clamping plates 19 to deflect outwards around the tail end of the branch pipe 18, the plurality of clamping plates 19 respectively push the plurality of connecting rods 21 to press the sliding ring 20 to move leftwards along the surface of the branch pipe 18 and compress the second spring 22, and when the pencil is stopped to be pushed rightwards, the first spring 12 rebounds to push the sliding ring 20 to respectively press the plurality of clamping plates 19 to deflect inwards around the tail end of the branch pipe 18 through the plurality of connecting rods 21, so that the surface of the pencil is clamped, and the fixing effect is achieved.

As shown in fig. 1, 2 and 7, two guide plates 25 are symmetrically arranged between the drawer box 2 and the rolling knife 4, the two guide plates 25 are respectively fixedly connected with the inner wall of the casing 1 and incline downwards, the guide plates 25 are inclined downwards to play a role in guiding and collecting cutting scraps, and the cutting scraps are convenient to slide down into the drawer box 2 through the surface of the guide plates 25 for temporary storage.

As shown in fig. 2, 4, 5 and 7, the protective cover 26 is disposed on a side of the handle 14 close to the second rotating handle 154, the protective cover 26 is screwed on an outer surface of the first sleeve 13, the protective cover 26 is rotatably moved to an end of the first sleeve 13 along the surface of the first sleeve 13, so that the second rotating handle 154 and the third rotating handle 163 can be shielded in an inner cavity of the protective cover 26, and the handle 14 can be prevented from mistakenly touching the second rotating handle 154 and the third rotating handle 163.

As shown in fig. 2, 3, 5 and 6, one side of the baffle 164 close to the guide cap 3 is provided with a groove 27, the cross section of the groove 27 is arc-shaped, the surface of the groove 27 is frosted, the pencil point is pressed in the groove 27 on the baffle 164, and the pencil point is polished through the frosted surface of the groove 27, so that the cut pencil point is smooth and round, paper is not easy to scratch, and the writing comfort is improved.

As shown in fig. 2-8, one end of the guide cap 3 close to the branch pipe 18 is cylindrical, one end of the guide cap 3 far from the branch pipe 18 is conical, one side of the guide cap 3 close to the sharpener 4 is provided with a notch, the outer wall of the sharpener 4 penetrates through the notch on the guide cap 3 and extends to the inside, the sharpener 4 is provided with a plurality of groups of spiral cutting edges, a pencil is inserted into the guide cap 3, and the sharpener 4 rotates around the axis of the pencil in the length direction through the guide cap 3 and cuts the pencil through the notch.

As shown in fig. 5, 6 and 9, the first gear 8 and the gear sleeve 9 both adopt helical teeth with larger tooth height, so that the first gear 8 can deflect around the support 6 along with the rolling cutter 4 without being separated from the meshing connection with the gear sleeve 9, the adjustment allowance of the rolling cutter 4 is increased, the threaded rod 155 is connected with the first sleeve shaft 13 by adopting fine threads, and the self-locking capacity of the fine threads is utilized to support the support ring 7 to prevent the threads from loosening.

As shown in fig. 1, 2, 4, 5 and 7, the circumferential surfaces of the first stem 11, the second stem 154 and the third stem 163 are engraved with anti-slip lines to increase friction force and prevent slipping when the fingers rotate.

As shown in fig. 2, 4, 7 and 8, the clamping plate 19 is arc-shaped, so that the arc surface can be tightly attached to the surface of the pencil while the clamping plate 19 deflects around the tail end of the branch pipe 18, smoothness is improved, the arc surface of the clamping plate 19 is provided with notches, friction between the clamping plate 19 and the surface of the pencil is improved, and the pencil is prevented from slipping.

The working principle is as follows: when the pencil is used, firstly, a pencil is inserted into the branch pipe 18 through the through hole 17, the pencil tips prop against the plurality of clamping plates 19 to deflect outwards around the tail end of the branch pipe 18, the plurality of clamping plates 19 respectively push the plurality of connecting rods 21 to press the sliding ring 20 to move leftwards along the surface of the branch pipe 18 and compress the second spring 22, meanwhile, the pencil tips are inserted into the guide cap 3 and continuously press the guide cap 3 to push the first sleeve shaft 13 to drive the tooth sleeve 9 to move rightwards along the inner wall of the sleeve pipe 10 and compress the first spring 12, when the pencil is stopped to be pushed rightwards, the first spring 12 rebounds to push the sliding ring 20 to respectively press the plurality of clamping plates 19 to deflect inwards around the tail end of the branch pipe 18 through the plurality of connecting rods 21, so as to clamp the surface of the pencil to play a role of fixing, then the rotating handle 14 is rotated, the rotating handle 14 drives the sharpener 4 and the guide cap 3 to rotate around the length axis of the tooth sleeve 9 through the first sleeve shaft 13, the threaded rod 155 and the support ring 7, meanwhile, the first gear 8 is meshed with the inner side wall of the gear sleeve 9 to drive the sharpener 4 to rotate around a self rotating shaft, so that the sharpener 4 cuts a pencil from a gap on the guide cap 3, the pencil is cut along with the sharpener 4, the first spring 12 pushes the first sleeve shaft 13 to gradually move leftwards, the baffle 164 is driven to gradually approach and press a pencil point, the baffle 164 is pressed by the pencil point to prevent the first spring 12 from pushing the gear sleeve 9 and the sharpener 4 to continuously move leftwards to cut the surface of the pencil, meanwhile, the groove 27 on the baffle 164 rotates to polish the pencil point, the cut pencil point is rounded and smooth, finally, the slide block 24 slides leftwards, the slide rod 23 drives the slide ring 20 to move leftwards, the slide ring 20 pulls the clamping plates 19 through the connecting rods 21 to release the clamped pencil, the pencil can be drawn out for use, when the thickness of the formed pencil needs to be adjusted, the second rotating handle 154 is rotated to drive the second sleeve shaft 151 and the fluted disc 152 to rotate, the toothed disc 152 engages with the second gear 153 to rotate the threaded rod 155, the threaded rod 155 moves along the side wall of the first sleeve shaft 13 through the thread, so that the support ring 7 drives the sliding ball 5 to change the position along with the threaded rod 155, thereby driving the rotating shaft of the rolling knife 4 to deflect around the support 6 through the sliding ball 5, namely, the angle between the sharpener 4 and the guide cap 3 is changed, so that the radial distance between the pencil inserted into the guide cap 3 and the sharpener 4 is changed, the thickness of the pencil point of the cut pencil can be changed, when the length of the pencil point after the pencil cutting and forming is required to be changed, rotating the third stem 163 causes the third sleeve 161 to rotate within the second sleeve 151, so that the fourth sleeve shaft 162 screwed into the third sleeve shaft 161 slides along the inner wall of the second sleeve shaft 151 via the lug, and the baffle 164 is driven to move, causing the position of the stop 164 against the pencil nib to change, thereby acting to change the length of the sharpened nib.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.