3d drawing pen

Abstract

The utility model relates to a 3d drawing pen which comprises a pen shell, a control mainboard, a feeding assembly and a heating assembly, a feeding port is formed in the tail end of the top of the pen shell, the control mainboard, the feeding assembly and the heating assembly are all fixedly connected with the pen shell and arranged in the pen shell, and the feeding assembly and the heating assembly are both electrically connected with the control mainboard. The feeding assembly comprises a feeding motor, a speed reducing mechanism and a feeding mechanism, the feeding motor is fixedly connected with the speed reducing mechanism, the speed reducing mechanism is fixedly connected with the feeding mechanism, the feeding mechanism is vertically arranged along the pen shell, and the feeding motor and the speed reducing mechanism are arranged in the direction perpendicular to the feeding mechanism. By means of the design, the internal space of the pen shell is sufficient, the feeding mechanism does not need to be arranged in a bent mode, the feeding route is a vertical route, feeding is smooth in the using process, and the problem that material blocking is not smooth in the feeding process is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3d drawing pen field, in particular to 3d drawing pen field. BACKGROUND

[0002] 3d drawing pen is a kind of innovative handheld device, combines 3D printing technology, so that user can freely create three-dimensional model or planar pattern in three-dimensional space.It is through instant melting and solidification material (such as plastic or photosensitive resin), let user " draw " three-dimensional structure like using ordinary pen.

[0003] 3d drawing pen is equipped with feeding device, and feeding is realized by feeding motor, speed reducer gear set and feeding mechanism;In prior art, feeding motor and speed reducer gear set are generally arranged along the vertical direction of pen shell, for example, the patent name of application No.CN202020792797.4 is a kind of 3d drawing pen speed reduction silk feeding mechanism, the purpose of speed reduction is realized by the setting of multistage gear;The power output shaft of driving motor and double-layer gear are engaged transmission has imperial crown gear, vertical transmission between driving motor and double-layer gear is realized by imperial crown gear, so that driving motor can be installed along the length direction of 3d drawing pen shell;By integrating the speed reduction mechanism in the shell, compared with the structure of transmission, ordinary motor can also be used when installing and cooperating, the requirement of motor is reduced, and its versatility is improved.

[0004] However, the above-mentioned feeding motor and speed reducer gear set are generally arranged along the vertical direction of pen shell, due to the limited internal space of 3d drawing pen, feeding pipe is bent, which can cause blockage or feeding difficulty in feeding process, therefore, it is necessary to develop a new technical design, which is simple in structure and can effectively solve the problem of feeding pipe bending, which can cause blockage or feeding difficulty in feeding process. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of 3d drawing pen to solve the above-mentioned background technology in use process feeding pipe bending, which can cause blockage or feeding difficulty in feeding process, and other problems.

[0006] The utility model provides following technical scheme: A kind of 3d drawing pen, including pen shell, control mainboard, feeding assembly and heating assembly, it is characterized by: the pen shell top tail end is equipped with feed inlet, the control mainboard, the feeding assembly and the heating assembly are all with the pen shell fixed connection and are set in the pen shell interior, the feeding assembly and the heating assembly are electrically connected with the control mainboard, the feeding assembly includes feeding motor, speed reducer and feeding mechanism, the feeding motor and the speed reducer are fixed connection, the speed reducer and the feeding mechanism are fixed connection, the feeding mechanism is vertically arranged along the pen shell, the feeding motor and the speed reducer are vertically arranged with the feeding mechanism.

[0007] Preferably, the speed reducer includes a driving gear, a primary reduction gear, a secondary reduction gear, a tertiary reduction gear, a quaternary reduction gear, a quinary reduction gear, and a gear shaft. The driving gear is fixedly connected with the feeding motor. The driving gear is meshingly connected with a large gear of the primary reduction gear. A small gear of the primary reduction gear is meshingly connected with a large gear of the secondary reduction gear. A small gear of the secondary reduction gear is meshingly connected with a large gear of the tertiary reduction gear. A small gear of the tertiary reduction gear is meshingly connected with a large gear of the quaternary reduction gear. A small gear of the quaternary reduction gear is meshingly connected with the quinary reduction gear. The quinary reduction gear is arranged on the tertiary reduction gear through the gear shaft. The quinary reduction gear is fixedly connected with the feeding mechanism through the gear shaft.

[0008] Preferably, the speed reducer is provided with a fixing assembly. The fixing assembly includes a gear fixing box, a first gear fixing plate, a second gear fixing plate, a third gear fixing plate, and a gear fixing shaft. The gear fixing box is fixedly connected with the pen shell. The gear fixing box and the pen shell form a closed cavity. The first gear fixing plate, the second gear fixing plate, and the third gear fixing plate are arranged in the gear fixing box. The first gear fixing plate, the second gear fixing plate, and the third gear fixing plate are fixedly connected through the gear fixing shaft.

[0009] Preferably, the driving gear and the primary reduction gear are arranged between the first gear fixing plate and the second gear fixing plate. The secondary reduction gear is arranged between the first gear fixing plate and the third gear fixing plate. The tertiary reduction gear, the quaternary reduction gear, the quinary reduction gear, and the gear shaft are arranged between the second gear fixing plate and the third gear fixing plate.

[0010] Preferably, the gear fixing box is provided with a material guiding interface and an auxiliary wheel fixing column for connecting the feeding mechanism, the material guiding interface and the gear fixing box are fixedly connected or integrally formed, and the auxiliary wheel fixing column and the gear fixing box are fixedly connected or integrally formed.

[0011] Preferably, the feeding mechanism comprises a feeding gear, a feeding auxiliary wheel, a feeding fixing member and a material guiding pipe, a feeding gap is arranged between the feeding gear and the feeding auxiliary wheel, the feeding fixing member is connected with the feeding gear and the feeding auxiliary wheel, the feeding gear is fixedly connected with the gear fixing shaft, the feeding auxiliary wheel is arranged on the third gear fixing plate through the auxiliary wheel fixing column, and the material guiding pipe is fixedly connected with the gear fixing box through the material guiding interface.

[0012] Preferably, the pen shell comprises a tail cover, a main body, a top cover, a bottom cover and a pen head, the tail cover and the gear fixing box are fixedly connected, the tail cover and the gear fixing box form a sealed cavity, the tail cover and the main body are fixedly connected, the top cover and the main body are fixedly connected, the bottom cover and the main body are fixedly connected, the pen head and the main body are fixedly connected, and the main body is provided with heat dissipation holes.

[0013] Preferably, the heating assembly comprises a heating core, a temperature sensor, a support and a heat insulation pad, the temperature sensor is arranged outside the heating core, the heat insulation pad is arranged outside the heating core, one end of the heating core is connected with the material guiding pipe and the support, the other end of the heating core is arranged in the pen head, one end of the support is connected with the control mainboard, and the heating core and the temperature sensor are electrically connected with the control mainboard.

[0014] Preferably, the control mainboard is provided with a speed regulating assembly for adjusting the feeding speed and a display screen, the display screen is electrically connected with the control mainboard, the speed regulating assembly comprises a speed regulating contact, a speed regulating rod and a speed regulating button, the speed regulating contact is connected with the control mainboard, the speed regulating rod is connected with the speed regulating contact, the speed regulating button is connected with the speed regulating rod, and the speed regulating button is arranged on one side of the main body.

[0015] Preferably, the pen shell is further provided with a temperature adjusting button, a feeding button, a feeding returning button, a lens for observing the display screen and a power interface, the temperature adjusting button, the feeding button, the feeding returning button and the power interface are electrically connected with the control mainboard, the lens is connected with the top cover, the temperature adjusting button is arranged on the top cover, the feeding button and the feeding returning button are arranged on one side of the main body, and the power interface is arranged on the tail cover.

[0016] Compared with the prior art, the pen shell has the advantages that:

[0017] 1. The 3D drawing pen of the utility model, including pen shell, control mainboard, feeding assembly and heating assembly, the top tail end of pen shell is equipped with feed inlet, control mainboard, feeding assembly and heating assembly are all fixedly connected with pen shell and set up in the inside of pen shell, feeding assembly and heating assembly are all electrically connected with control mainboard, feeding assembly includes feeding motor, speed reducer and feeding mechanism, feeding motor and speed reducer are fixedly connected, speed reducer and feeding mechanism are fixedly connected, feeding mechanism is set up along the vertical direction of pen shell, feeding motor and speed reducer are set up in the vertical direction with feeding mechanism. Through the vertical setting of feeding mechanism along the pen shell, the vertical setting of feeding motor and speed reducer with feeding mechanism, the inside space of pen shell is sufficient, the feeding mechanism can not be bent, the feeding route is vertical, and the feeding is smooth in the use process, effectively solving the problem of blocking in the feeding process.

[0018] 2. The 3D drawing pen of the utility model, the speed reducer comprises: a driving gear, a primary speed reducer, a secondary speed reducer, a tertiary speed reducer, a quaternary speed reducer, a quinary speed reducer and a gear shaft, the driving gear is fixedly connected with the feeding motor, the driving gear is meshed with a large gear of the primary speed reducer, a small gear of the primary speed reducer is meshed with a large gear of the secondary speed reducer, a small gear of the secondary speed reducer is meshed with a large gear of the tertiary speed reducer, a small gear of the tertiary speed reducer is meshed with a large gear of the quaternary speed reducer, a small gear of the quaternary speed reducer is meshed with the quinary speed reducer, the quinary speed reducer is arranged on the tertiary speed reducer through the gear shaft, and the quinary speed reducer is fixedly connected with the feeding mechanism through the gear shaft. Through the setting of the gear set, the rotation speed of the driving gear is effectively reduced, so that the feeding mechanism can meet the rotation speed requirement of feeding.

[0019] 3. The 3D drawing pen of the utility model, a fixing assembly is arranged on the speed reducer, the fixing assembly comprises a gear fixing box, a first gear fixing plate, a second gear fixing plate, a third gear fixing plate and a gear fixing shaft, the gear fixing box is fixedly connected with the pen shell, the gear fixing box and the pen shell form a sealed cavity, the first gear fixing plate, the second gear fixing plate and the third gear fixing plate are arranged in the gear fixing box, and the first gear fixing plate, the second gear fixing plate and the third gear fixing plate are fixedly connected through the gear fixing shaft. Through the setting, the speed reducer can be effectively fixed. The speed reduction transmission of the speed reducer is more stable, and the gear fixing box and the tail cover are fixedly connected to form a sealed cavity, so that debris is prevented from entering the speed reducer and affecting the normal work of the speed reducer.

[0020] 4. The 3D drawing pen of the utility model, the driving gear and the first-stage speed reducer are arranged between the first gear fixing plate and the second gear fixing plate, the second-stage speed reducer is arranged between the first gear fixing plate and the third gear fixing plate, the third-stage speed reducer, the fourth-stage speed reducer, the fifth-stage speed reducer and the gear shaft are all arranged between the second gear fixing plate and the third gear fixing plate. Through the arrangement, the gears at all stages can be effectively fixed, and the speed reduction transmission of the speed reduction mechanism is more stable.

[0021] 5. The 3D drawing pen of the utility model, the gear fixing box is provided with a material guiding interface and an auxiliary wheel fixing column for connecting the feeding mechanism, the material guiding interface and the gear fixing box are fixedly connected or integrally formed, and the auxiliary wheel fixing column and the gear fixing box are fixedly connected or integrally formed. Through the material guiding interface and the auxiliary wheel fixing column, the feeding mechanism can be effectively fixed.

[0022] 6. The 3D drawing pen of the utility model, the feeding mechanism comprises a feeding gear, a feeding auxiliary wheel, a feeding fixing part and a material guiding pipe, the feeding gap is arranged between the feeding gear and the feeding auxiliary wheel, the feeding fixing part is connected with the feeding gear and the feeding auxiliary wheel, the feeding gear is fixedly connected with the gear fixing shaft, the feeding auxiliary wheel is arranged on the third gear fixing plate through the auxiliary wheel fixing column, and the material guiding pipe is fixedly connected with the gear fixing box through the material guiding interface. Through the feeding gap arranged between the feeding gear and the feeding auxiliary wheel, feeding can be realized, the feeding gear starts to rotate under the action of the feeding motor and the speed reduction mechanism, drives the material to move from the feeding gap arranged between the feeding gear and the feeding auxiliary wheel to the direction of the material guiding pipe, the feeding auxiliary wheel makes the material not deviate from the feeding route and assists in driving the material into the material guiding pipe, the arrangement of the material guiding interface, the feeding mechanism and the speed reduction mechanism shortens the distance between the feeding inlet and the material guiding pipe, reduces the kinetic energy consumption of the material in the feeding process and the material is not easy to break; through the arrangement of the feeding fixing part, the feeding gear works more stably, and the service life of the feeding gear and the speed reduction mechanism is increased.

[0023] 7. The 3D drawing pen of the utility model, the pen shell comprises a tail cover, a main body, a top cover, a bottom cover and a pen head, the tail cover is fixedly connected with the gear fixing box, the tail cover and the gear fixing box form a closed cavity, the tail cover is fixedly connected with the main body, the top cover is fixedly connected with the main body, the bottom cover is fixedly connected with the main body, the pen head is fixedly connected with the main body, and the main body is provided with a heat dissipation hole. Through the arrangement, each component and part in the 3D drawing pen can be effectively supported and fixed; through the arrangement of the heat dissipation hole, the heating assembly can be effectively cooled; through the arrangement of the closed cavity formed by the tail cover and the gear fixing box, the debris can be effectively prevented from entering the speed reduction mechanism and affecting the normal work of the speed reduction mechanism.

[0024] 8. The 3D drawing pen of this utility model includes a heating element, a temperature sensor, a bracket, and a heat insulation pad. The temperature sensor is located outside the heating element, and the heat insulation pad is wrapped around the heating element. One end of the heating element is connected to the guide tube and the bracket, and the other end is located inside the pen tip. One end of the bracket is connected to the control mainboard, and the heating element and temperature sensor are electrically connected to the control mainboard. This design effectively heats and softens the material. The temperature sensor can detect the temperature of the heating element, allowing the user to adjust its temperature. The heat insulation pad effectively separates the heating element from the pen shell, reducing heat transfer and lowering the temperature of the pen shell.

[0025] 9. The 3D drawing pen of this utility model has a speed control component and a display screen on its control motherboard for adjusting the feeding speed. The display screen and the control motherboard are electrically connected. The speed control component includes speed control contacts, a speed control lever, and a speed control button. The speed control contacts are connected to the control motherboard, the speed control lever is connected to the speed control contacts, and the speed control button is connected to the speed control lever. The speed control button is located on one side of the main body. Through this setting, moving the speed control button causes the speed control lever to contact the speed control contacts, thereby adjusting and controlling the feeding speed of the 3D drawing pen.

[0026] 10. The 3D drawing pen of this utility model is further provided with a temperature adjustment button, a feeding button, a retraction button, a lens for viewing the display screen, and a power interface on the pen shell. The temperature adjustment button, feeding button, retraction button, and power interface are all electrically connected to the control motherboard. The lens is connected to the top cover. The temperature adjustment button is located on the top cover, and the feeding button and the retraction button are both located on one side of the main body. The power interface is located on the tail cover. The lens is used for viewing the display screen, the temperature adjustment button is used to adjust the temperature of the heating element, the feeding button and the retraction button are used to control feeding or retraction, and the power interface is used to connect to an external power source to provide power to the 3D drawing pen. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional illustration of the 3D drawing pen of this utility model. Figure 1 ;

[0029] Figure 2 This is a three-dimensional illustration of the 3D drawing pen of this utility model. Figure 2 ;

[0030] Figure 3 This is an exploded view of the 3D drawing pen of this utility model;

[0031] Figure 4 It is the three-dimensional schematic view of the feeding assembly of the 3D drawing pen of the utility model;

[0032] Figure 5 It is the three-dimensional schematic view of the fixing assembly of the 3D drawing pen of the utility model;

[0033] Figure 6 It is the three-dimensional schematic view of the transmission structure of the 3D drawing pen of the utility model Figure 1

[0034] Figure 7 It is the three-dimensional schematic view of the transmission structure of the 3D drawing pen of the utility model Figure 2 .

[0035] In each drawing, 1, pen shell, 11, feed inlet, 12, tail cover, 13, main body, 131, heat dissipation hole, 14, top cover, 15, bottom cover, 16, pen head; 2, control mainboard, 21, speed regulation assembly, 211, speed regulation contact, 212, speed regulation rod, 213, speed regulation button, 22, display screen; 3, feeding assembly, 31, feeding motor, 32, speed reduction mechanism, 321, driving gear, 322, primary speed reduction gear, 323, secondary speed reduction gear, 324, tertiary speed reduction gear, 325, quaternary speed reduction gear, 326, quinary speed reduction gear, 327, gear shaft, 33, feeding mechanism, 331, feeding gear, 332, feeding auxiliary wheel, 333, feeding fixing piece, 334, material guide pipe; 4, heating assembly, 41, heating core, 42, temperature sensor, 43, support, 44, heat insulation pad; 5, fixing assembly, 51, gear fixing box, 511, material guide interface, 512, auxiliary wheel fixing column, 52, first gear fixing plate, 53, second gear fixing plate, 54, third gear fixing plate, 55, gear fixing shaft; 6, temperature adjustment button; 7, feeding button; 8, material returning button; 9, lens; 10, power supply interface. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0037] In the description of the present application, it needs to be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0038] In the description of the present application, it needs to be understood that unless otherwise specifically defined and limited, the terms "mounting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. 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.

[0039] In the description of the present application, it needs to be understood that the terms "up", "down", "side", "front", "back" and the like indicate the orientation or positional relationship based on the installation, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0040] In the description of the present application, it needs to be understood that the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone.

[0041] It also needs to be noted that in the embodiments of the present application, the same reference signs represent the same parts or the same components, and for the same components in the embodiments of the present application, only one of the parts or components may be marked with a reference sign in the drawing, and it should be understood that the reference signs are also applicable to other identical parts or components.

[0042] In addition, in the present application, the technical features described in an open manner include a closed technical solution consisting of the listed features, and also includes an open technical solution containing the listed features.

[0043] In order to further understand the utility model content, characteristics and effects of the present application, the following examples are given, and are described in detail as follows in conjunction with the drawings:

[0044] As Figures 1-7As shown, the 3D drawing pen comprises a pen shell 1, a control mainboard 2, a feeding assembly 3 and a heating assembly 4. The pen shell 1 is provided with a feeding port 11 at the top tail end. The control mainboard 2, the feeding assembly 3 and the heating assembly 4 are fixedly connected with the pen shell 1 and arranged inside the pen shell 1. The feeding assembly 3 and the heating assembly 4 are electrically connected with the control mainboard 2. The feeding assembly 3 comprises a feeding motor 31, a speed reduction mechanism 32 and a feeding mechanism 33. The feeding motor 31 is fixedly connected with the speed reduction mechanism 32. The speed reduction mechanism 32 is fixedly connected with the feeding mechanism 33. The feeding mechanism 33 is arranged vertically along the pen shell 1. The feeding motor 31 and the speed reduction mechanism 32 are arranged in a vertical direction with the feeding mechanism 33. In this embodiment, the feeding motor and the speed reduction mechanism are arranged in a vertical direction with the feeding mechanism by arranging the feeding mechanism vertically along the pen shell, so that the internal space of the pen shell is sufficient. The feeding mechanism can be arranged without bending, so that the feeding route is a vertical route. In the use process, the feeding is smooth, and the problem of blocking during feeding is effectively solved. Of course, the above structure is not limited to this, and can be other structures having the same effect.

[0045] Specifically, as shown in the figure, Figures 6-7 The speed reduction mechanism 32 comprises a driving gear 321, a first-stage speed reduction gear 322, a second-stage speed reduction gear 323, a third-stage speed reduction gear 324, a fourth-stage speed reduction gear 325, a fifth-stage speed reduction gear 326 and a gear shaft 327. The driving gear 321 is fixedly connected with the feeding motor 31. The driving gear 321 is meshingly connected with the large gear of the first-stage speed reduction gear 322. The small gear of the first-stage speed reduction gear 322 is meshingly connected with the large gear of the second-stage speed reduction gear 323. The small gear of the second-stage speed reduction gear 323 is meshingly connected with the large gear of the third-stage speed reduction gear 324. The small gear of the third-stage speed reduction gear 324 is meshingly connected with the large gear of the fourth-stage speed reduction gear 325. The small gear of the fourth-stage speed reduction gear 325 is meshingly connected with the fifth-stage speed reduction gear 326. The fifth-stage speed reduction gear 326 is arranged on the third-stage speed reduction gear 324 through the gear shaft 327. The fifth-stage speed reduction gear 326 is fixedly connected with the feeding mechanism 33 through the gear shaft 327. In this embodiment, the rotation speed of the driving gear is effectively reduced by arranging the gear set, so that the feeding mechanism can reach the required rotation speed requirement. Of course, the above structure is not limited to this, and can be other structures having the speed reduction transmission effect.

[0046] Specifically, as shown in the figure, Figure 5As shown in the figure, the speed reduction mechanism 32 is provided with a fixing assembly 5, which comprises a gear fixing box 51, a first gear fixing plate 52, a second gear fixing plate 53, a third gear fixing plate 54 and a gear fixing shaft 55. The gear fixing box 51 is fixedly connected with the pen shell 1, and forms a closed cavity with the pen shell 1. The first gear fixing plate 52, the second gear fixing plate 53 and the third gear fixing plate 54 are arranged in the gear fixing box 51, and are fixedly connected with each other through the gear fixing shaft 55. In this embodiment, the speed reduction mechanism can be effectively fixed through the above arrangement, and the speed reduction transmission of the speed reduction mechanism is more stable. The closed cavity formed by the gear fixing box and the pen shell can effectively prevent debris from entering the speed reduction mechanism and affecting the normal work of the speed reduction mechanism. Of course, the above structure is not limited to this, and can be other structures having the same effect.

[0047] Specifically, as shown in the figure, Figure 6 The driving gear 321 and the first-stage speed reduction gear 322 are arranged between the first gear fixing plate 52 and the second gear fixing plate 53, the second-stage speed reduction gear 323 is arranged between the first gear fixing plate 52 and the third gear fixing plate 54, and the third-stage speed reduction gear 324, the fourth-stage speed reduction gear 325, the fifth-stage speed reduction gear 326 and the gear shaft 327 are arranged between the second gear fixing plate 53 and the third gear fixing plate 54. In this embodiment, the gears at each stage can be effectively fixed through the above arrangement, and the speed reduction transmission of the speed reduction mechanism is more stable. Of course, the above structure is not limited to this, and can be other structures having the functions of fixing and stable transmission.

[0048] Specifically, as shown in the figure, Figure 5 The gear fixing box 51 is provided with a material guiding interface 511 and an auxiliary wheel fixing column 512 for connecting the feeding mechanism 33. The material guiding interface 511 is fixedly connected with or integrally formed with the gear fixing box 51, and the auxiliary wheel fixing column 512 is fixedly connected with or integrally formed with the gear fixing box 51. In this embodiment, the feeding mechanism can be effectively fixed through the material guiding interface and the auxiliary wheel fixing column. Of course, the above structure is not limited to this, and can be other structures having the same effect.

[0049] Specifically, as shown in the figure, Figure 4As shown, the feeding mechanism 33 includes a feeding gear 331, a feeding auxiliary wheel 332, a feeding fixing part 333 and a material guide pipe 334. The feeding gap is arranged between the feeding gear 331 and the feeding auxiliary wheel 332. The feeding fixing part 333 is connected with the feeding gear 331 and the feeding auxiliary wheel 332. The feeding gear 331 is fixedly connected with the gear fixing shaft 55. The feeding auxiliary wheel 332 is arranged on the third gear fixing plate 54 through the auxiliary wheel fixing column 512. The material guide pipe 334 is fixedly connected with the gear fixing box 51 through the material guide interface 511. In the embodiment, the feeding gap arranged between the feeding gear and the feeding auxiliary wheel can realize feeding. The feeding gear starts to rotate under the action of the feeding motor and the speed reduction mechanism, drives the material to move from the feeding gap arranged between the feeding gear and the feeding auxiliary wheel to the material guide pipe. The feeding auxiliary wheel makes the material not deviate from the feeding route and assists to drive the material into the material guide pipe. The arrangement of the material guide interface, the feeding mechanism and the speed reduction mechanism shortens the distance between the feeding port and the material guide pipe, reduces the kinetic energy consumption of the material in the feeding process and makes the material not easy to break. The arrangement of the feeding fixing part makes the feeding gear work more stably and increases the service life of the feeding gear and the speed reduction mechanism. Of course, the above structure is not limited to this, and can be other structures having the same effect.

[0050] Specifically, as shown in the figure, Figures 1-3 The pen shell 1 includes a tail cover 12, a main body 13, a top cover 14, a bottom cover 15 and a pen head 16. The tail cover 12 is fixedly connected with the gear fixing box 51. The tail cover 12 and the gear fixing box 51 form a sealed cavity. The tail cover 12 is fixedly connected with the main body 13. The top cover 14 is fixedly connected with the main body 13. The bottom cover 15 is fixedly connected with the main body 13. The pen head 16 is fixedly connected with the main body 13. The main body 13 is provided with a heat dissipation hole 131. In the embodiment, each component and part in the 3D drawing pen is effectively supported and fixed through the arrangement. The heat dissipation hole effectively dissipates heat for the heating assembly. The tail cover and the gear fixing box form a sealed cavity, which effectively prevents debris from entering the speed reduction mechanism and affecting the normal work of the speed reduction mechanism. Of course, the above structure is not limited to this, and can be other structures having the same supporting effect.

[0051] Specifically, as shown in the figure, Figure 3As shown, the heating assembly 4 comprises a heating core 41, a temperature sensor 42, a bracket 43 and a heat insulation pad 44. The temperature sensor 42 is arranged outside the heating core 41, and the heat insulation pad 44 is arranged outside the heating core 41. One end of the heating core 41 is connected with the material guide pipe 334 and the bracket 43, and the other end of the heating core 41 is arranged in the pen head 16. One end of the bracket 43 is connected with the control mainboard 2, and the heating core 41 and the temperature sensor 42 are electrically connected with the control mainboard 2. Through the above arrangement, the material can be effectively heated and softened, and the temperature sensor can sense the temperature of the heating core, so that the user can adjust the temperature. The heat insulation pad is arranged to effectively separate the heating core from the pen shell, reduce heat transfer, and effectively reduce the heat of the pen shell. Of course, the above structure is not limited to this, and other structures having the same effect can be used.

[0052] Specifically, as shown in the figure, Figure 3 The control mainboard 2 is provided with a speed regulating assembly 21 for adjusting the feeding speed and a display screen 22. The display screen 22 is electrically connected with the control mainboard 2. The speed regulating assembly 21 comprises a speed regulating contact 211, a speed regulating rod 212 and a speed regulating button 213. The speed regulating contact 211 is connected with the control mainboard 2. The speed regulating rod 212 is connected with the speed regulating contact 211. The speed regulating button 213 is connected with the speed regulating rod 212, and the speed regulating button 213 is arranged on one side of the main body 13. In this embodiment, the speed regulating button drives the speed regulating rod to contact the speed regulating contact, so as to adjust the feeding speed of the 3D drawing pen. Of course, the above structure is not limited to this, and other structures having the same effect can be used.

[0053] Specifically, the pen shell 1 is further provided with a temperature adjusting button 6, a feeding button 7, a material returning button 8, a lens 9 for observing the display screen 22 and a power interface 10. The temperature adjusting button 6, the feeding button 7, the material returning button 8 and the power interface 10 are electrically connected with the control mainboard 2. The lens 9 is connected with the top cover 14. The temperature adjusting button 6 is arranged on the top cover 14. The feeding button 7 and the material returning button 8 are arranged on one side of the main body 13. The power interface 10 is arranged on the tail cover 12. In this embodiment, the power interface is a Type-C interface. The lens is used for observing the display screen. The temperature adjusting button is used for adjusting the temperature of the heating core. The feeding button and the material returning button are used for controlling the feeding or the material returning. The power interface is used for connecting an external power supply to provide power for the 3D drawing pen. Of course, the above structure is not limited to this, and other structures having the same effect can be used.

[0054] Working principle: through the power interface, connect the power, insert the material into the feed port, press the feed button, control the mainboard to control the feeding motor to start working, drive the driving wheel to rotate, drive the first-stage speed reducer, the second-stage speed reducer, the third-stage speed reducer, the fourth-stage speed reducer, the fifth-stage speed reducer to start rotating, thereby driving the feeding gear to start rotating, realizing speed reduction transmission through the speed reducers, the feeding gap is arranged between the feeding gear and the feeding auxiliary wheel, the material passes through the feeding gap, and the material is fed to the material guide pipe through the cooperation of the feeding gear and the feeding auxiliary wheel, the material is sent into the heating core through the material guide pipe to realize heating of the material, and finally the material comes out of the pen head; the control mainboard is provided with a speed regulating assembly for adjusting the feeding speed and a display screen, the display screen and the control mainboard are electrically connected, the speed regulating lever is driven to contact the speed regulating contact point through the speed regulating key, so that the speed of the 3D drawing pen is adjusted and controlled; the pen shell is also provided with a temperature adjusting key, a feeding key, a material returning key, a lens for observing the display screen and a power interface, the temperature adjusting key, the feeding key, the material returning key and the power interface are electrically connected with the control mainboard, the lens is connected with the top cover, the temperature adjusting key is arranged on the top cover, the feeding key and the material returning key are arranged on one side of the main body, and the power interface is arranged on the tail cover; the lens is used for observing the display screen, the temperature adjusting key is used for adjusting the temperature of the heating core, and the feeding key and the material returning key are used for controlling feeding or material returning

[0055] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0056] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A 3D drawing pen comprising a pen shell (1), a control mainboard (2), a feeding assembly (3) and a heating assembly (4), characterized in that: The pen shell (1) top tail end is equipped with the feed inlet (11), the control mainboard (2), the feeding assembly (3) and the heating assembly (4) are all fixedly connected with the pen shell (1) and are arranged in the pen shell (1) interior, the feeding assembly (3) and the heating assembly (4) are electrically connected with the control mainboard (2), the feeding assembly (3) includes feeding motor (31), speed reducer (32) and feeding mechanism (33), the feeding motor (31) and the speed reducer (32) are fixedly connected, the speed reducer (32) and the feeding mechanism (33) are fixedly connected, the feeding mechanism (33) is vertically arranged along the pen shell (1), the feeding motor (31) and the speed reducer (32) are vertically arranged with the feeding mechanism (33).

2. The 3D drawing pen of claim 1, wherein: The speed reducer (32) includes driving gear (321), primary reduction gear (322), secondary reduction gear (323), tertiary reduction gear (324), four-stage reduction gear (325), five-stage reduction gear (326) and gear shaft (327), the driving gear (321) and the feeding motor (31) are fixedly connected, the driving gear (321) and the primary reduction gear (322) are engagedly connected, the primary reduction gear (322) and the secondary reduction gear (323) are engagedly connected, the secondary reduction gear (323) and the tertiary reduction gear (324) are engagedly connected, the tertiary reduction gear (324) and the four-stage reduction gear (325) are engagedly connected, the four-stage reduction gear (325) and the five-stage reduction gear (326) are engagedly connected, the five-stage reduction gear (326) is arranged on the tertiary reduction gear (324) through the gear shaft (327), and the five-stage reduction gear (326) is fixedly connected with the feeding mechanism (33) through the gear shaft (327).

3. The 3D drawing pen of claim 2, wherein: The speed reducer (32) is equipped with the fixed assembly (5), the fixed assembly (5) includes gear fixing box (51), first gear fixing plate (52), second gear fixing plate (53), third gear fixing plate (54) and gear fixing shaft (55), the gear fixing box (51) and the pen shell (1) are fixedly connected, the gear fixing box (51) and the pen shell (1) form a closed cavity, the first gear fixing plate (52), the second gear fixing plate (53) and the third gear fixing plate (54) are all arranged in the gear fixing box (51), and the first gear fixing plate (52), the second gear fixing plate (53) and the third gear fixing plate (54) are fixedly connected through the gear fixing shaft (55).

4. The 3D drawing pen of claim 3, wherein: The main gear (321) and the first-stage reduction gear (322) are arranged between the first gear fixing plate (52) and the second gear fixing plate (53), the second-stage reduction gear (323) is arranged between the first gear fixing plate (52) and the third gear fixing plate (54), and the third-stage reduction gear (324), the fourth-stage reduction gear (325), the fifth-stage reduction gear (326) and the gear shaft (327) are all arranged between the second gear fixing plate (53) and the third gear fixing plate (54).

5. The 3D drawing pen of claim 4, wherein: The gear fixing box (51) is provided with a material guiding interface (511) and an auxiliary wheel fixing column (512) for connecting the feeding mechanism (33), the material guiding interface (511) is fixedly connected or integrally formed with the gear fixing box (51), and the auxiliary wheel fixing column (512) is fixedly connected or integrally formed with the gear fixing box (51).

6. The 3D drawing pen of claim 5, wherein: The feeding mechanism (33) comprises a feeding gear (331), a feeding auxiliary wheel (332), a feeding fixing member (333) and a material guiding pipe (334), a feeding gap is arranged between the feeding gear (331) and the feeding auxiliary wheel (332), the feeding fixing member (333) is connected with the feeding gear (331) and the feeding auxiliary wheel (332), the feeding gear (331) is fixedly connected with the gear fixing shaft (55), the feeding auxiliary wheel (332) is arranged on the third gear fixing plate (54) through the auxiliary wheel fixing column (512), and the material guiding pipe (334) is fixedly connected with the gear fixing box (51) through the material guiding interface (511).

7. The 3D drawing pen of claim 6, wherein: The pen shell (1) comprises a tail cover (12), a main body (13), a top cover (14), a bottom cover (15) and a pen head (16), the tail cover (12) is fixedly connected with the gear fixing box (51), the tail cover (12) and the gear fixing box (51) form a sealed cavity, the tail cover (12) is fixedly connected with the main body (13), the top cover (14) is fixedly connected with the main body (13), the bottom cover (15) is fixedly connected with the main body (13), the pen head (16) is fixedly connected with the main body (13), and the main body (13) is provided with a heat dissipation hole (131).

8. The 3D drawing pen of claim 7, wherein: The heating assembly (4) comprises a heating core (41), a temperature sensor (42), a bracket (43) and a heat insulation pad (44), the temperature sensor (42) is arranged outside the heating core (41), the heat insulation pad (44) is arranged outside the heating core (41), one end of the heating core (41) is connected with the material guiding pipe (334) and the bracket (43), the other end of the heating core (41) is arranged in the pen head (16), one end of the bracket (43) is connected with the control mainboard (2), and the heating core (41) and the temperature sensor (42) are electrically connected with the control mainboard (2).

9. The 3D drawing pen of claim 8, wherein: The control mainboard (2) is provided with a speed regulating assembly (21) for adjusting the feeding speed and a display screen (22), the display screen (22) is electrically connected with the control mainboard (2), the speed regulating assembly (21) comprises a speed regulating contact (211), a speed regulating rod (212) and a speed regulating button (213), the speed regulating contact (211) is connected with the control mainboard (2), the speed regulating rod (212) is connected with the speed regulating contact (211), the speed regulating button (213) is connected with the speed regulating rod (212), and the speed regulating button (213) is arranged on one side of the main body (13).

10. The 3D drawing pen of claim 9, wherein: The pen shell (1) is also provided with a temperature adjusting button (6), a feeding button (7), a feeding returning button (8), a lens (9) for observing the display screen (22) and a power supply interface (10), the temperature adjusting button (6), the feeding button (7), the feeding returning button (8) and the power supply interface (10) are all electrically connected with the control mainboard (2), the lens (9) is connected with the top cover (14), the temperature adjusting button (6) is arranged on the top cover (14), the feeding button (7) and the feeding returning button (8) are both arranged on one side of the main body (13), and the power supply interface (10) is arranged on the tail cover (12).

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