A pencil processing device and method

Abstract

The application discloses a pencil processing device and method, and relates to the technical field of pencil processing, which comprises a protection cylinder, a slotted mechanism is arranged axially in the protection cylinder and is used for processing a pencil holding groove; a rotating driving mechanism is arranged at the rear end of the protection cylinder and is used for fixing the rear end of the pencil and driving the pencil to revolve around the slotted mechanism; and a rotating guide mechanism is arranged at the front end of the protection cylinder and is used for fixing the front end of the pencil and guiding the pencil to rotate during the revolving process. The rotating driving mechanism and the rotating guide mechanism are used for fixing the two ends of the pencil, the pencil is made to rotate during the revolving process along the slotted mechanism, the pencil is made to contact the slotted mechanism from three sides, the three-side slotted processing of the pencil is completed, manual rotation of the pencil is not needed, automatic processing is realized, and the work efficiency and the slotted precision are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pencil processing, in particular to a pencil processing device and method. BACKGROUND

[0002] At present, the pencils on the market are basically cylindrical or polygonal, and have complete surfaces. Considering the posture of holding the pencil with fingers, three holding grooves are provided on the pencil, which is more in line with the human mechanics of holding the pencil with fingers, and the fingers are more firm and comfortable when holding the pencil.

[0003] The slotting device of the pencil in the prior art can only realize single-sided slotting of the pencil. After single-sided slotting, the angle of the pencil is manually adjusted for slotting of other sides. The above process is complicated, the processing time is long, and the slotting precision is low. SUMMARY

[0004] Therefore, the present application provides a pencil processing device and method to solve the problems in the background art, and specifically discloses the following contents:

[0005] A pencil processing device comprises a protective cylinder, an internal shaft of the protective cylinder is provided with a slotting mechanism for processing pencil holding grooves; a rear end of the internal shaft of the protective cylinder is provided with a rotary driving mechanism for fixing the rear end of the pencil and driving the pencil to revolve around the slotting mechanism; and a front end of the internal shaft of the protective cylinder is provided with a rotary guide mechanism for fixing the front end of the pencil and guiding the pencil to rotate during the revolving process.

[0006] Further, the slotting mechanism comprises a cutter shaft, a front end of the protective cylinder is fixedly provided with a front cover, a rear end of the protective cylinder is fixedly provided with a rear cover, a front end of the cutter shaft is fixedly arranged at a central position of the rear end of the front cover, a rear end of the cutter shaft is fixedly arranged at a central position of the front end of the rear cover, and the cutter shaft is uniformly provided with three groups of cutter assemblies in the circumferential direction, wherein the cutter assemblies comprise a first cutter unit, a second cutter unit and a third cutter unit arranged in sequence from front to back.

[0007] Further, the rotary driving mechanism comprises a rear rotary ring, the rear rotary ring is sleeved on the rear end of the cutter shaft, the rear rotary ring is rotationally connected with the cutter shaft, the rear cover is provided with a rear rotary groove matched with the rear rotary ring, and the rear end of the rear rotary ring is rotationally connected in the rear rotary groove.

[0008] A driving tooth is arranged on the circumferential wall of the rear rotary ring, a front support seat is fixedly connected to the front end of the bottom of the protective cylinder, a rear support seat is fixedly connected to the rear end of the bottom of the protective cylinder, a driving groove in communication with the interior of the protective cylinder is arranged in the rear support seat, a driving motor is arranged in the driving groove, a driving gear is fixedly connected to the output end of the driving motor, and the driving gear is meshingly connected with the driving tooth.

[0009] The rear rotating ring is uniformly provided with a plurality of rear connecting holes in the circumferential direction, and a rear fixing member is rotationally connected in the rear connecting hole, and the rear fixing member is used for fixing the rear end of the pencil.

[0010] Further, the rear fixing member is open at the front end, and a rear cover is detachably connected at the rear end, the rear cover is matched with the rear end of the pencil, and is used for limiting the axial displacement of the pencil.

[0011] Further, the rotating guide mechanism comprises a front rotating ring, the front rotating ring is sleeved on the front end of the cutter shaft, and the front rotating ring is rotationally connected with the cutter shaft.

[0012] The front rotating ring is uniformly provided with a plurality of front connecting holes in the circumferential direction, and the front connecting hole is correspondingly provided with the rear connecting hole, and a front fixing member is rotationally connected in the front connecting hole, and the front fixing member is used for fixing the front end of the pencil.

[0013] The front end of the front connecting shaft is fixedly connected with a front guide gear; the inner wall of the protective cylinder is spaced apart and provided with a smooth section and a guide tooth section in the circumferential direction, the number of the smooth section and the guide tooth section is three groups, the smooth section is correspondingly provided with the cutter assembly, and the guide tooth section is meshingly connected with the front guide gear, so as to drive the front fixing member to rotate, replace the contact surface of the pencil and the next group of cutter assemblies.

[0014] Further, the front fixing member is provided with a positioning block matched with the positioning groove at the front end of the pencil.

[0015] Further, the front rotating ring is provided with a front ring groove communicated with the front connecting hole, the circumferential wall of the front fixing member is provided with a front ratchet wheel, the front ring groove is provided with a front pawl corresponding to the front ratchet wheel, and the front pawl is used for preventing the reverse rotation of the front fixing member.

[0016] The rear rotating ring is provided with a rear ring groove communicated with the rear connecting hole, and the circumferential wall of the rear fixing member is provided with a rear ratchet wheel, and the rear ring groove is provided with a rear pawl corresponding to the rear ratchet wheel, and the rear pawl is used for preventing the reverse rotation of the rear fixing member.

[0017] A pencil processing method is realized by using any one of the pencil processing devices, and specifically comprises the following steps:

[0018] S1: machining a positioning groove at the front end of a common pencil;

[0019] S2: opening the rear cover, inserting the pencil into the front fixing member through the rear fixing member, and making the positioning groove match with the positioning block, and then installing the rear cover after the pencil is completely inserted;

[0020] S3: start the driving motor, the driving gear is engaged with the driving teeth on the rear rotating ring to drive transmission, the rear rotating ring drives the pencil to revolve around the cutter shaft, and the cutter assembly is started at the same time;

[0021] S4: the rear rotating ring rotates to drive the pencil and the front rotating ring to rotate together, when the front guide gear passes through the first group of smooth sections, the pencil does not rotate, the first group of cutter assemblies process the first face of the pencil, when the front guide gear passes through the first group of guide teeth sections, the pencil rotates, when the front guide gear passes through the second group of smooth sections, the pencil does not rotate, the second group of cutter assemblies process the second face of the pencil, when the front guide gear passes through the second group of guide teeth sections, the pencil rotates, when the front guide gear passes through the third group of smooth sections, the pencil does not rotate, the third group of cutter assemblies process the third face of the pencil, after the front guide gear passes through the third group of guide teeth sections, the pencil rotates to the initial position, the first face of the pencil, the second face of the pencil and the third face of the pencil are evenly distributed along the axis of the pencil;

[0022] S5: repeat step S4 until the three faces of the pencil are slotted;

[0023] S6: the driving motor and the cutter assembly are turned off, the rear cover is opened, the pencil is taken out, and the part of the pencil with the positioning slot at the front end is cut off.

[0024] Further, the holding slot comprises a strip-shaped slot, a first spherical slot and a second spherical slot arranged in sequence from front to back.

[0025] Further, the length of the pencil is 160-180mm, and the diameter is 8-10mm; the length of the cross section of the strip-shaped slot is 60-70mm, and the width is 5-6mm, the diameter of the cross section of the first spherical slot is 5-6mm, and the diameter of the cross section of the second spherical slot is 5-6mm.

[0026] Along the length direction of the pencil, the distance between the strip-shaped slot and the first spherical slot is 12-14mm, and the distance between the first spherical slot and the second spherical slot is 12-14mm.

[0027] The beneficial effects of the present application are:

[0028] The present application fixes the two ends of the pencil through the rotating driving mechanism and the rotating guide mechanism, and makes the pencil rotate in the process of revolving around the slotting mechanism to realize self-rotation, so that the three faces of the pencil are in contact with the slotting mechanism, the three faces of the pencil are slotted, manual rotation of the pencil is not needed, automatic processing is realized, and the working efficiency and the slotting precision are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim at the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on the provided drawings.

[0030] Figure 1 It is a side view of the pencil processing device of the present application.

[0031] Figure 2 It is a rear view of the pencil processing device of the present application.

[0032] Figure 3 It is Figure 1 A cross-sectional view of A-A.

[0033] Figure 4 It is Figure 1 A cross-sectional view of B-B.

[0034] Figure 5 It is a structural schematic view of the rotating guide mechanism.

[0035] Figure 6 It is a schematic view of the connection of the rotating guide mechanism, the slotting mechanism and the rotating driving mechanism.

[0036] Figure 7 It is Figure 6 A cross-sectional view of C-C.

[0037] Figure 8 It is Figure 7 An enlarged view of D.

[0038] Figure 9 It is a structural schematic view of the pencil after processing.

[0039] Figure 10 It is a structural schematic view of the positioning slot.

[0040] Figure 11 It is a structural schematic view of the pencil after being sharpened.

[0041] In the drawings, the following:

[0042] 11 - protection cylinder; 111 - guiding tooth section; 112 - smooth section; 12 - front cover; 13 - rear cover; 131 - rear rotating groove; 21 - front support seat; 22 - rear support seat; 221 - driving groove; 222 - driving gear; 3 - front rotating ring; 31 - front connecting hole; 32 - front ring groove; 321 - front pawl; 4 - front fixing member; 41 - front connecting shaft; 42 - front guide gear; 43 - front ratchet wheel; 5 - cutter shaft; 51 - first cutter unit; 52 - second cutter unit; 53 - third cutter unit; 6 - rear rotating ring; 61 - rear connecting hole; 62 - driving tooth; 7 - rear fixing member; 71 - rear cap; 8 - pencil; 81 - positioning groove; 82 - strip-shaped groove; 83 - first spherical groove; 84 - second spherical groove. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0044] It should be noted that the terms "first", "second", and the like in the description and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or components does not necessarily limit to those steps or components clearly listed, but can include other steps or components not clearly listed or inherent to these processes, methods, products or devices.

[0045] In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0046] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0047] Furthermore, the terms "mount", "set", "provided with", "connected", "linked", "sleeved" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Referring to the accompanying Figures 1-11 The application discloses a pencil processing device, a protective cylinder 11, a slotted mechanism is arranged axially in the protective cylinder 11, which is used for processing a pencil 8 holding groove; a rotating driving mechanism is arranged at the rear end of the protective cylinder 11, which is used for fixing the rear end of the pencil 8 and driving the pencil 8 to revolve around the slotted mechanism; and a rotating guide mechanism is arranged at the front end of the protective cylinder 11, which is used for fixing the front end of the pencil 8 and guiding the pencil 8 to rotate during the revolving process.

[0049] In the embodiment, the two ends of the pencil 8 are fixed by the rotating driving mechanism and the rotating guide mechanism, and the pencil 8 rotates during the revolving process around the slotted mechanism, so that the pencil 8 contacts the slotted mechanism on three sides, the slotted mechanism on three sides is completed, the pencil does not need to be manually rotated, automatic processing is realized, and the working efficiency and the slotted precision are greatly improved.

[0050] The slotted mechanism comprises a cutter shaft 5, the front end of the protective cylinder 11 is fixedly provided with a front cover 12, the rear end is fixedly provided with a rear cover 13, the front end of the cutter shaft 5 is fixedly arranged at the center position of the rear end of the front cover 12, the rear end of the cutter shaft 5 is fixedly arranged at the center position of the front end of the rear cover 13, and the cutter shaft 5 is uniformly provided with three groups of cutter assembly along the circumference, the cutter assembly comprises a first cutter unit 51, a second cutter unit 52 and a third cutter unit 53 which are sequentially arranged from front to back.

[0051] In the embodiment, the first cutter unit 51, the second cutter unit 52 and the third cutter unit 53 are all prior art, and will not be described here again, and a cutter driving mechanism is arranged in the cutter shaft and used for driving the above cutter units, which is not shown in the figure.

[0052] The rotating driving mechanism comprises a rear rotating ring 6, the rear rotating ring 6 is sleeved at the rear end of the cutter shaft 5, the rear rotating ring 6 is rotationally connected with the cutter shaft 5, the rear cover 13 is provided with a rear rotating groove 131 matched with the rear rotating ring 6, and the rear end of the rear rotating ring 6 is rotationally connected in the rear rotating groove 131;

[0053] The rear rotating ring 6 is provided with driving teeth 62 on the circumferential wall, the front support seat 21 is fixedly connected to the bottom front end of the protective cylinder 11, the rear support seat 22 is fixedly connected to the rear end of the protective cylinder 11, the rear support seat 22 is provided with a driving groove 221 which is in communication with the inside of the protective cylinder 11, a driving motor is arranged in the driving groove 221, the driving motor is fixedly connected with a driving gear 222 at the output end, and the driving gear 222 is in meshing connection with the driving teeth 62.

[0054] The rear rotating ring 6 is provided with a plurality of rear connecting holes 61 which are uniformly arranged in the circumferential direction, and the rear connecting holes 61 are rotatably connected with the rear fixing members 7, and the rear fixing members 7 are used for fixing the rear end of the pencil 8.

[0055] The rear fixing member 7 is open at the front end and is detachably connected with a rear cover 71 at the rear end, the rear cover 71 is matched with the rear end of the pencil 8, and is used for limiting the axial displacement of the pencil 8.

[0056] The rotating guide mechanism comprises the front rotating ring 3 which is sleeved on the front end of the cutter shaft 5 and is in rotating connection with the cutter shaft 5.

[0057] The front rotating ring 3 is provided with a plurality of front connecting holes 31 which are uniformly arranged in the circumferential direction, and the front connecting holes 31 are correspondingly arranged with the rear connecting holes 61, and the front connecting holes 31 are rotatably connected with the front fixing members 4 which are used for fixing the front end of the pencil 8.

[0058] The front fixing member 4 is open at the rear end and is fixedly connected with a front connecting shaft 41 at the front end, and the front connecting shaft 41 is fixedly connected with a front guide gear 42 at the front end; the inner wall of the protective cylinder 11 is provided with smooth sections 112 and guide tooth sections 111 which are arranged in the circumferential direction at intervals, the number of the smooth sections 112 and the guide tooth sections 111 is three groups, the smooth sections 112 are correspondingly arranged with the cutter assemblies, and the guide tooth sections 111 are in meshing connection with the front guide gear 42 and are used for driving the front fixing member 4 to rotate and replacing the contact surface of the pencil 8 with the next group of cutter assemblies.

[0059] In the embodiment, the arrangement of the guide tooth sections 111 can ensure that, after the pencil rotates once, the contact surface of the pencil 8 with the next group of cutter assemblies is exactly the contact surface of the last group of cutter assemblies which is rotated by 120° along the axis of the pencil 8, so that the uniform distribution of the three holding grooves of the pencil is realized.

[0060] The front fixing member 4 is provided with a positioning block which is matched with the positioning groove 81 at the front end of the pencil 8, so as to avoid the relative rotation between the pencil 8 and the front fixing member 4.

[0061] In the embodiment, the positioning block is partially rectangular, so as to facilitate the operator to insert the pencil and make the positioning block and the positioning groove 81 more easily aligned, and the rear cover is provided with a mark which corresponds to the direction of the rectangular part of the positioning groove 81 of the pencil 8 at the initial position of each rear fixing member.

[0062] A front ring groove 32 is arranged in the front rotating ring 3 and communicates with the front connecting hole 31. A front ratchet wheel 43 is arranged on the circumferential wall of the front fixing member 4. A front ratchet pawl 321 corresponding to the front ratchet wheel 43 is arranged on the front ring groove 32, which is used to prevent the reverse rotation of the front fixing member 4.

[0063] A rear ring groove is arranged in the rear rotating ring 6 and communicates with the rear connecting hole 61. A rear ratchet wheel is arranged on the circumferential wall of the rear fixing member 7. A rear ratchet pawl corresponding to the rear ratchet wheel is arranged on the rear ring groove, which is used to prevent the reverse rotation of the rear fixing member 7.

[0064] In the embodiment, the front ratchet wheel 43 and the front ratchet pawl 321, and the rear ratchet wheel and the rear ratchet pawl are arranged to ensure that the rotation direction of the pencil 8 is only the rotation direction of the front guide gear 42 under the meshing transmission of the guide tooth segment 111. The rotation direction of the first cutter unit 51, the second cutter unit 52 and the third cutter unit 53 is the same as the rotation direction of the pencil 8, which avoids the reverse rotation of the pencil 8 when the cutter assembly contacts the pencil 8 to groove.

[0065] A processing method of a pencil, specifically comprising the following steps:

[0066] S1: A positioning groove 81 is processed at the front end of a common pencil 8;

[0067] S2: The rear cover 71 is opened, the pencil 8 is inserted into the front fixing member 4 through the rear fixing member 7, the positioning groove 81 is matched with the positioning block, and the rear cover 71 is installed after the pencil 8 is completely inserted;

[0068] S3: The driving motor is started, the driving gear 222 is meshed and transmitted with the driving tooth 62 on the rear rotating ring 6, the rear rotating ring 6 drives the pencil 8 to revolve along the cutter shaft 5, and the cutter assembly is started at the same time;

[0069] S4: The rear rotating ring 6 rotates to drive the pencil 8 and the front rotating ring 3 to rotate together. When the front guide gear 42 passes through the first group of smooth segments 112, the pencil 8 does not rotate. The first group of cutter assemblies process the first face of the pencil 8. When the front guide gear 42 passes through the first group of guide tooth segments 111, the pencil 8 rotates. When the front guide gear 42 passes through the second group of smooth segments 112, the pencil 8 does not rotate. The second group of cutter assemblies process the second face of the pencil 8. When the front guide gear 42 passes through the second group of guide tooth segments 111, the pencil 8 rotates. When the front guide gear 42 passes through the third group of smooth segments 112, the pencil 8 does not rotate. The third group of cutter assemblies process the third face of the pencil 8. After the front guide gear 42 passes through the third group of guide tooth segments 111, the pencil 8 rotates to the initial position. The first face of the pencil 8, the second face of the pencil 8 and the third face of the pencil 8 are uniformly distributed along the axis of the pencil 8.

[0070] S5: The step S4 is repeated until the three faces of the pencil 8 are grooved.

[0071] S6: Turn off the driving motor and the cutter assembly, open the rear cover 71, take out the pencil 8, and cut off the part of the pencil 8 with the positioning groove 81 at the front end.

[0072] The holding groove comprises a strip-shaped groove 82, a first spherical groove 83 and a second spherical groove 84 arranged in sequence from front to back.

[0073] The length of the pencil 8 is 160-180mm, and the diameter is 8-10mm; the length of the cross section of the strip-shaped groove 82 is 60-70mm, and the width is 5-6mm; the diameter of the cross section of the first spherical groove 83 is 5-6mm; and the diameter of the cross section of the second spherical groove 84 is 5-6mm.

[0074] In the length direction of the pencil 8, the distance between the strip-shaped groove 82 and the first spherical groove 83 is 12-14mm, and the distance between the first spherical groove 83 and the second spherical groove 84 is 12-14mm.

[0075] In the embodiment, the length of the pencil 8 is 177mm, and the diameter is 8mm; the length of the cross section of the strip-shaped groove 82 is 65mm, and the width is 5.5mm; the diameter of the cross section of the first spherical groove 83 is 5.5mm; and the diameter of the cross section of the second spherical groove 84 is 5.5mm.

[0076] In the length direction of the pencil 8, the distance between the strip-shaped groove 82 and the first spherical groove 83 is 13.65mm, and the distance between the first spherical groove 83 and the second spherical groove 84 is 13.65mm.

[0077] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pencil processing device, characterized in that, a protective cylinder (11) is internally provided with a slotting mechanism for processing pencil (8) holding slot; the rear end of the protective cylinder (11) is provided with a rotary drive mechanism for fixing the rear end of the pencil (8) and driving the pencil (8) to revolve along the slotting mechanism; the front end of the protective cylinder (11) is provided with a rotary guide mechanism for fixing the front end of the pencil (8) and guiding the pencil (8) to rotate during revolution; the slotting mechanism includes a cutter shaft (5), the front end of the protective cylinder (11) is fixedly provided with a front cover (12), the rear end is fixedly provided with a rear cover (13), the front end of the cutter shaft (5) is fixedly provided at the center position of the rear end of the front cover (12), the rear end of the cutter shaft (5) is fixedly provided at the center position of the front end of the rear cover (13), and the cutter shaft (5) is uniformly provided with three groups of cutter assemblies along the circumference; the rotary guide mechanism includes a front rotary ring (3), the front rotary ring (3) is sleeved on the front end of the cutter shaft (5), and the front rotary ring (3) is rotationally connected with the cutter shaft (5); the front rotary ring (3) is uniformly provided with a plurality of front connecting holes (31) along the circumference, the front connecting holes (31) are rotationally connected with front fixing members (4) inside, and the front fixing members (4) are used for fixing the front end of the pencil (8); the rear end of the front fixing member (4) is provided with a front connecting shaft (41) fixedly connected at the front end, and the front end of the front connecting shaft (41) is fixedly connected with a front guide gear (42); the inner wall of the protective cylinder (11) is provided with smooth sections (112) and guide tooth sections (111) along the circumference at intervals, the number of the smooth sections (112) and the guide tooth sections (111) is three groups, the smooth sections (112) are correspondingly provided with the cutter assemblies, the guide tooth sections (111) are meshingly connected with the front guide gear (42), and the front guide gear (42) is used for driving the front fixing member (4) to rotate, changing the contact surface of the pencil (8) with the next group of cutter assemblies. 2.The pencil processing device according to claim 1, characterized in that, the cutter assembly includes a first cutter unit (51), a second cutter unit (52) and a third cutter unit (53) arranged in sequence from front to rear. 3.The pencil processing device according to claim 2, characterized in that, the rotary drive mechanism includes a rear rotary ring (6), the rear rotary ring (6) is sleeved on the rear end of the cutter shaft (5), the rear rotary ring (6) is rotationally connected with the cutter shaft (5), the rear cover (13) is provided with a rear rotary groove (131) matched with the rear rotary ring (6), and the rear end of the rear rotary ring (6) is rotationally connected in the rear rotary groove (131). The rear rotating ring (6) is provided with driving teeth (62) on the circumferential wall, the front support seat (21) is fixedly connected to the bottom front end of the protective cylinder (11), the rear support seat (22) is fixedly connected to the rear end, the driving groove (221) in communication with the inside of the protective cylinder (11) is arranged in the rear support seat (22), the driving motor is arranged in the driving groove (221), the driving gear (222) is fixedly connected to the output end of the driving motor, and the driving gear (222) is in meshing connection with the driving teeth (62). The rear rotating ring (6) is uniformly provided with a plurality of rear connecting holes (61) along the circumference, the rear fixing part (7) is rotatably connected in the rear connecting hole (61), and the rear fixing part (7) is used for fixing the rear end of the pencil (8). The front connecting hole (31) is correspondingly arranged with the rear connecting hole (61).

4. The pencil processing device according to claim 3, wherein, The rear fixing part (7) is open at the front end, and the rear clamping cover (71) is detachably connected to the rear end, the rear clamping cover (71) is matched with the rear end of the pencil (8), and is used for limiting the axial displacement of the pencil (8).

5. The pencil processing device according to claim 4, wherein, The front fixing part (4) is provided with a positioning block matched with the positioning groove (81) at the front end of the pencil (8).

6. The pencil processing device according to claim 5, wherein, The front rotating ring (3) is provided with the front ring groove (32) in communication with the front connecting hole (31), the front ratchet wheel (43) is arranged on the circumferential wall of the front fixing part (4), the front ratchet wheel (43) is provided with the front ratchet pawl (321) corresponding to the front ring groove (32), and the front fixing part (4) is prevented from being reversed. The rear rotating ring (6) is provided with the rear ring groove in communication with the rear connecting hole (61), the rear ratchet wheel is arranged on the circumferential wall of the rear fixing part (7), and the rear ratchet wheel is provided with the rear ratchet pawl corresponding to the rear ring groove, so that the rear fixing part (7) is prevented from being reversed.

7. A pencil processing method, comprising the following steps: S1: processing the positioning groove (81) at the front end of the ordinary pencil (8); S2: opening the rear clamping cover (71), penetrating the pencil (8) into the front fixing part (4) through the rear fixing part (7), and making the positioning groove (81) matched with the positioning block, after the pencil (8) is completely inserted, the rear clamping cover (71) is installed; S3: starting the driving motor, the driving gear (222) is in meshing transmission with the driving teeth (62) on the rear rotating ring (6), the rear rotating ring (6) drives the pencil (8) to revolve around the cutter shaft (5), and the cutter assembly is started. ​ S4: the rear rotating ring (6) rotates to drive the pencil (8) and the front rotating ring (3) to rotate together, when the front guide gear (42) passes through the first group of smooth sections (112), the pencil (8) does not rotate, the first group of cutter assemblies process the first face of the pencil (8) with holding grooves, when the front guide gear (42) passes through the first group of guide teeth sections (111), the pencil (8) rotates, when the front guide gear (42) passes through the second group of smooth sections (112), the pencil (8) does not rotate, the second group of cutter assemblies process the second face of the pencil (8) with holding grooves, when the front guide gear (42) passes through the second group of guide teeth sections (111), the pencil (8) rotates, when the front guide gear (42) passes through the third group of smooth sections (112), the pencil (8) does not rotate, the third group of cutter assemblies process the third face of the pencil (8) with holding grooves, when the front guide gear (42) passes through the third group of guide teeth sections (111), the pencil (8) rotates to the initial position, the first face of the pencil (8), the second face of the pencil (8) and the third face of the pencil (8) are evenly distributed along the axis of the pencil (8); S5: repeat step S4 until the three faces of the pencil (8) are grooved; S6: turn off the driving motor and the cutter assemblies, open the rear cover (71), take out the pencil (8), and cut off the part of the pencil (8) with the positioning groove (81) at the front end.

8. The pencil processing method according to claim 7, wherein the holding groove comprises a strip-shaped groove (82), a first spherical groove (83) and a second spherical groove (84) arranged in sequence from front to back.

9. The pencil processing method according to claim 8, wherein the length of the pencil (8) is 160-180 mm and the diameter is 8-10 mm; the length of the cross section of the strip-shaped groove (82) is 60-70 mm and the width is 5-6 mm, the diameter of the cross section of the first spherical groove (83) is 5-6 mm, and the diameter of the cross section of the second spherical groove (84) is 5-6 mm; The distance between the strip-shaped groove (82) and the first spherical groove (83) along the length direction of the pencil (8) is 12-14 mm, and the distance between the first spherical groove (83) and the second spherical groove (84) is 12-14 mm. ​ ​

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