Material guide device, consumable conveying apparatus and 3D printer

Abstract

Provided in the present application are a material guide device, a consumable conveying apparatus and a 3D printer. The material guide device comprises a material guide assembly, wherein the material guide assembly comprises a material guide tube and a tubular connector, the material guide tube being provided with a consumable channel, and the tubular connector being arranged at the end of the material guide tube; and a flexible feeding assembly, which is movably arranged in the tubular connector, the flexible feeding assembly being configured to be capable of adaptively swinging relative to the tubular connector along with the feeding angle of the consumable, allowing the consumable to be guided out of the consumable channel in a first direction during feeding; the flexible feeding assembly comprises a guide feeding port and a guide feeding tube, the guide feeding port gradually contracting in the inner diameter in the first direction and then being in communication with the guide feeding tube. The feeding port can automatically swing along with the feeding angle of the consumable, thus reducing wear between the material guide device and the consumable, preventing damage to the printing consumable.

Description

Material guiding equipment, consumables conveying device and 3D printer

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202420278030.8 filed on February 5, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present application belongs to the field of 3D printing technology, and specifically relates to material guiding equipment, consumable material conveying devices and 3D printers. Background Art

[0004] 3D printers, also known as three-dimensional printers or stereo printers, are rapid prototyping devices that typically utilize digital printing technology to create printed materials. In recent years, 3D printing technology has shown promising applications in jewelry, footwear, industrial design, architecture, engineering and construction, automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields. Material guides are often used to deliver printing materials.

[0005] Summary of the Invention

[0006] The present application provides a material guiding device, a consumable material conveying device and a 3D printer to solve the problem of how to reduce the wear between the printing consumables and the feed port and avoid damage to the printing consumables.

[0007] In order to solve the above technical problems, the present application provides a material guiding device, comprising:

[0008] A material guide assembly, comprising a material guide tube and a tubular joint, wherein the material guide tube is provided with a consumable material channel, and the tubular joint is provided at the end of the material guide tube;

[0009] a flexible feed assembly, the flexible feed assembly being movably disposed in the tubular joint;

[0010] The flexible feeding assembly is configured to be able to adaptively swing relative to the tubular joint according to the feeding angle of the consumables, so that the consumables are guided out from the consumable channel along the first direction during feeding.

[0011] As a further improvement of the present application, the flexible feed assembly includes a guide feed port and a guide feed pipe, and the inner diameter of the guide feed port gradually shrinks along the first direction and is connected to the guide feed pipe.

[0012] As a further improvement of the present application, the material guiding device further includes an extrusion component disposed inside the material guiding component;

[0013] The extrusion assembly includes an active extrusion gear and a driven extrusion gear arranged relatively to each other, and a gap for conveying consumables is arranged between the active extrusion gear and the driven extrusion gear, so that the consumables entering the consumable channel can pass through the gap in a first direction and then be discharged from the discharge port of the material guide assembly.

[0014] As a further improvement of the present application, the driven extrusion gear is rotatably embedded in the material guide tube through the driven extrusion rod, and the outer tooth profile of the active extrusion gear is recessed inward to form the gap with the outer side wall of the driven extrusion gear. When the consumable enters the gap and is discharged along the first direction, the driven extrusion gear is driven to rotate synchronously.

[0015] As a further improvement of the present application, the material guiding assembly further includes an adjusting member for adjusting the gap;

[0016] One end of the adjusting member is fixedly connected to the material guide tube, and the other end of the adjusting member is extended in a direction close to the flexible feeding assembly. By pressing the adjusting member to change the relative distance between the material guide tube and the active extrusion gear, the gap formed between the active extrusion gear and the driven extrusion gear is adjusted.

[0017] As a further improvement of the present application, the material guide assembly further includes a material guide rack for mounting the material guide pipe, and the material guide pipe is rotatably mounted inside the material guide rack via a supporting connecting rod;

[0018] The outer side wall of the guide frame is provided with a driving gear for driving the active extrusion gear to rotate, and the driving gear is connected to the active extrusion gear through an active extrusion rod.

[0019] As a further improvement of the present application, an elastic member is provided between the material guide rack and the material guide tube, one end of the elastic member is in contact with the outer wall of the material guide tube, and the other end of the elastic member is arranged to pass through the side wall of the material guide rack. The elastic member applies a force in the opposite direction of the material guide rack to the material guide tube to maintain the gap formed between the active extrusion gear and the driven extrusion gear.

[0020] As a further improvement of the present application, the material guiding device further includes a consumables detection assembly for detecting the consumables conveying status, the consumables detection assembly including a fixed plate mounted on a side wall of the material guiding assembly, and a detection push rod provided through the fixed plate;

[0021] One end of the detection push rod passes through the side wall of the material guide assembly and extends into the consumable channel. The other end of the detection push rod passes through the fixed plate. A photoelectric sensing mechanism is provided at a position on the fixed plate corresponding to the end of the detection push rod. When the consumable enters the consumable channel, the detection push rod is pushed to move on the fixed plate to block the photoelectric sensing mechanism.

[0022] As a further improvement of the present application, the material guiding assembly further includes a light emitting member, and the light emitting member is configured to provide light to the feeding angle.

[0023] The present application also provides a consumable material conveying device, comprising a consumable material installation device, a driving device, and any of the above-mentioned material guiding devices;

[0024] The consumables installation device is configured to load consumables, and the driving device is connected to and drives the material guiding device to work so as to realize the feeding and / or returning of the consumables.

[0025] The present application also provides a 3D printer, comprising any one of the material guiding devices described above, or comprising the above-mentioned consumable material conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 is a three-dimensional assembly diagram of a material guiding device provided by one or more embodiments of the present application;

[0028] FIG2 is a schematic structural diagram of an elastic member in a material guiding device provided by one or more embodiments of the present application;

[0029] FIG3 is a schematic structural diagram of an adjusting member in a material guiding device provided by one or more embodiments of the present application;

[0030] FIG4 is a schematic structural diagram of a consumables detection component in a material guiding device provided by one or more embodiments of the present application;

[0031] FIG5 is a schematic structural diagram of a flexible feeding assembly in a material guiding device provided by one or more embodiments of the present application;

[0032] FIG6 is a schematic structural diagram of an induction plate in a material guiding device provided by one or more embodiments of the present application;

[0033] FIG7 is a schematic structural diagram of a material guide frame in a material guide device provided by one or more embodiments of the present application;

[0034] FIG8 is a schematic structural diagram of a material guiding device provided by one or more embodiments of the present application;

[0035] Description of reference numerals:

[0036] 10- material guide assembly; 11- material guide pipe; 111- supporting connecting rod; 12- pipe joint; 13- material outlet; 14- adjusting member; 15- material guide rack; 16- driving gear; 17- elastic member;

[0037] 20-flexible feed assembly; 21-guide feed port; 22-guide feed pipe;

[0038] 30-extrusion assembly; 31-active extrusion gear; 311-active extrusion rod; 32-driven extrusion gear; 321-driven extrusion rod;

[0039] 40-consumables detection assembly; 41-fixed plate; 42-detection push rod; 43-photoelectric sensing mechanism; 431-photoelectric transmitter; 432-photoelectric receiver; 44-sensing plate; 50-consumables. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0041] In the description of this application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement of the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0042] To provide a more detailed and complete description of the present disclosure, the following provides illustrative descriptions of the embodiments and examples of the present application; however, these descriptions are not intended to be the only ways to implement or use the embodiments of the present application. The embodiments cover features of various embodiments, as well as the method steps and sequences for constructing and operating these embodiments. However, other embodiments may also be used to achieve the same or equivalent functionality and step sequences.

[0043] The feed inlet of traditional material guides is typically made of hard materials. However, printing consumables bend during transport, and long-term use can cause friction with the feed inlet. This can lead to wear and tear at the contact point between the feed inlet and the printing consumables, and even damage to the printing consumables, further affecting 3D printing results. Therefore, minimizing wear and tear between the printing consumables and the feed inlet, and thus preventing damage to the printing consumables, is an urgent problem to be solved.

[0044] Please refer to Figures 1 to 8. In order to solve the problem of how to reduce the wear between the printing consumables and the feed port and avoid damage to the printing consumables in the prior art, the embodiment of the present application provides a material guiding device, a consumable conveying device and a 3D printer. Please refer to Figure 1, which is a three-dimensional assembly diagram of the material guiding device provided in the embodiment of the present application. The material guiding device includes a material guiding component 10 and a flexible feeding component 20, wherein the material guiding component 10 includes a material guiding tube 11 and a tubular joint 12. The present application provides a consumable channel in the material guiding tube 11, and the tubular joint 12 is provided at the end of the material guiding tube 11. The flexible feeding component 20 is movably provided in the tubular joint 12, wherein the flexible feeding component 20 is configured to be able to swing adaptively relative to the tubular joint 12 following the feeding angle of the consumable 50, so that the consumable 50 can enter the consumable channel and be discharged along the first direction during feeding.

[0045] As an optional embodiment, the present application configures the flexible feed assembly 20 to be a deformable flexible material such as Teflon that can swing following the feeding angle of the consumable 50, so that the flexible feed assembly 20 can adaptively swing relative to the tubular joint 12 following the feeding angle of the consumable 50, thereby reducing the wear on the end of the guide tube 11 and the damage to the consumable 50.

[0046] Further, please refer to Figure 5, which is a structural schematic diagram of the flexible feed component 20 in the material guiding device provided in an embodiment of the present application. The flexible feed component 20 provided in the present application includes a guide feed port 21 and a guide feed pipe 22, wherein the guide feed port 21 is a trumpet-shaped structure with a larger upper portion and a smaller lower portion, and the guide feed pipe 22 is a tubular structure. The inner diameter of the guide feed port 21 gradually shrinks along the first direction and is connected to the guide feed pipe 22. The present application fixes the flexible feed component 20 as a whole at the end of the guide pipe 11 by setting the above-mentioned guide feed pipe 22 through the tubular joint 12. With this arrangement, the consumables 50 entering from the guide feed port 21 will pass through the guide feed pipe 22 and further enter the consumable channel set in the guide pipe 11, thereby being discharged along the first direction under the action of the extrusion component 30.

[0047] As an optional embodiment, please refer to Figure 3, which is a structural schematic diagram of the adjusting member 14 in the material guiding device provided in an embodiment of the present application. The material guiding device provided in the present application also includes an extrusion assembly 30 arranged inside the material guiding assembly 10, wherein the extrusion assembly 30 includes an active extrusion gear 31 and a driven extrusion gear 32 arranged relatively to each other. It can be observed that a gap for conveying the consumable 50 is formed between the active extrusion gear 31 and the driven extrusion gear 32, so that the consumable 50 entering the material guiding channel can pass through the gap along the first direction and be discharged from the discharge port 13 set at the other end of the material guiding tube 11.

[0048] In a specific embodiment provided in the present application, please continue to refer to Figure 3. It can be observed that the above-mentioned driven extrusion gear 32 is rotatably embedded in the guide tube 11 through the driven extrusion rod 321. The outer tooth profile of the active extrusion gear 31 is recessed inward to form a gap with the outer side wall of the driven extrusion gear 32. When the consumable 50 enters the gap through the flexible feeding assembly 20 and is discharged along the first direction, it will drive the driven extrusion gear 32 to rotate synchronously.

[0049] Furthermore, the material guide assembly 10 provided in the present application also includes a material guide rack 15 for setting up the material guide tube 11. Please refer to Figure 7, which is a structural schematic diagram of the material guide rack 15 in the material guide device provided in an embodiment of the present application. It can be observed that the material guide tube 11 is rotatably set up inside the material guide rack 15 through a support connecting rod 111. The support connecting rod 111 passes through the material guide rack 15 and the material guide tube 11 in sequence, thereby setting up the material guide tube 11 in the material guide rack 15. The outer wall of the material guide rack 15 is provided with a driving gear 16 for driving the active extrusion gear 31 to rotate, and the above-mentioned driving gear 16 and the active extrusion gear 31 are transmission-connected through the active extrusion rod 311.

[0050] Of course, the material guide tube 11 provided in the present application is also relatively recessed inward relative to the active extrusion gear 31 so as to better realize the relative positional relationship between the active extrusion gear 31 and the driven extrusion gear 32, thereby improving the utilization rate of the internal space of the material guide equipment.

[0051] It should be noted that the present application can drive the active gear 16 to rotate through a driving assembly (not shown in the figure), and further drive the active extrusion gear 31 to rotate through the active extrusion rod 311, so as to realize that the consumable 50 is led out in the first direction by the driving assembly driving the active extrusion gear 31 to rotate, and when the consumable 50 is transported from top to bottom, the consumable 50 can be fed, and when the consumable 50 is extruded from bottom to top, the consumable 50 can be withdrawn, thereby realizing the feeding and withdrawing of the consumable 50 through the rotation direction of the active extrusion gear 31; of course, the relative distance of the gap can also be adjusted manually, and then the manual withdrawal can be achieved by extracting the consumable 50 from bottom to top. The above methods are all feasible.

[0052] Further, please continue to refer to Figure 3. The material guiding assembly 10 provided in this application also includes an adjusting part 14 for adjusting the gap. When the automatic feeding and withdrawing of the consumable 50 fails, the gap between the active extrusion gear 31 and the driven extrusion gear 32 can be adjusted by the adjusting part 14, thereby realizing manual material withdrawal.

[0053] Specifically, it can be observed that one end of the adjusting member 14 provided in the present application is fixedly connected to the guide tube 11, and the other end of the adjusting member 14 is extended in the direction close to the flexible feeding assembly 20, so that the adjusting member 14 can be pressed at a position close to the flexible feeding assembly 20. Since the guide tube 11 is rotatably mounted inside the guide frame 15 through the supporting connecting rod 111, and the active extrusion gear 31 is transmission-connected to the active gear 16 arranged on the outer wall of the guide frame 15 through the active extrusion rod 311, the relative distance between the guide tube 11 and the active extrusion gear 31 can be changed by pressing the adjusting member 14, thereby adjusting the gap formed between the active extrusion gear 31 and the driven extrusion gear 32, so as to reduce or increase the gap according to the conveying requirements of the consumable 50, avoid the preset gap from not matching the diameter of the consumable 50, and avoid the situation of material running or breaking. The consumable 50 can also be manually returned by adjusting the relative distance of the gap.

[0054] It should be noted that the above-mentioned adjustment member 14 is preferably fixed to one end of the guide frame 15 close to the flexible feed assembly 20, and its shape and position should not affect the relative position relationship between the active extrusion gear 31 and the driven extrusion gear 32.

[0055] In the embodiment of the present application, in order to better maintain the gap formed between the active extrusion gear 31 and the driven extrusion gear 32 and prevent the consumable 50 from slipping during the feeding and returning process, the present application further provides an elastic member 17 between the guide rack 15 and the guide tube 11. Please refer to Figure 2, which is a structural schematic diagram of the elastic member 17 in the guide device provided in the embodiment of the present application. It can be observed that one end of the elastic member 17 is in contact with the outer wall of the guide tube 11, and the other end of the elastic member 17 is arranged to pass through the side wall of the guide rack 15. The elastic member 17 applies a force in the opposite direction of the guide rack 15 to the guide tube 11 to maintain the gap formed between the active extrusion gear 31 and the driven extrusion gear 32, thereby pressing the consumable 50 and ensuring that the consumable 50 does not slip during the 3D printing process.

[0056] It should be noted that the above-mentioned elastic member 17 preferably uses a spring that can undergo elastic deformation. Of course, as long as it can be arranged between the guide frame 15 and the guide tube 11, and apply a force in the opposite direction of the guide tube 11 to the guide frame 15, thereby maintaining the relative gap between the active extrusion gear 31 and the driven extrusion gear 32, any form of elastic member 17 that can undergo deformation is feasible, and this application does not impose further restrictions on the specific implementation of the elastic member 17.

[0057] In addition, since the other end of the elastic member 17 is arranged to pass through the side wall of the guide frame 15, when the adjustment member 14 is pressed to change the gap formed between the active extrusion gear 31 and the driven extrusion gear 32, the guide tube 11 can be moved along the extension direction of the elastic member 17 to guide the guide tube 11.

[0058] Furthermore, the material guide assembly 10 provided in the present application also includes a light-emitting component (not shown in the figure). Specifically, the light-emitting component can be set at a position of the material guide tube 11 close to the flexible feeding assembly 20, so as to provide light to the feeding angle of the consumable 50 through the light-emitting component, so as to know the feeding status of the consumable 50 in time; it should be noted that as long as the feeding status of the consumable 50 can be illuminated by the light-emitting component, any selected light-emitting component form and any setting position are feasible, and the present application does not impose further restrictions on this.

[0059] In order to prevent the consumable material 50 from breaking during the extrusion process and affecting the 3D printing effect, please refer to Figure 4, which is a structural schematic diagram of the consumable material detection component 40 in the material guiding device provided in an embodiment of the present application. The present application is also provided with a consumable material detection component 40 for detecting the material guiding condition of the consumable material 50. Please refer to Figure 6, which is a structural schematic diagram of the sensing plate 44 in the material guiding device provided in an embodiment of the present application. The present application preferably sets the consumable material detection component 40 on the side wall of the material guiding component 10 above the active extrusion gear 31 and the driven extrusion gear 32. It can be observed that the consumable material detection component 40 includes a fixed plate 41 set on the side wall of the material guiding component 10, and a detection push rod 42 set horizontally through the fixed plate 41.

[0060] In a specific embodiment provided in the present application, please refer to Figure 8, which is a structural schematic diagram of the material guiding device provided in the embodiment of the present application, wherein the first direction is the direction extending from the flexible feeding component 20 to the discharge port 13, and the direction in which the detection push rod 42 transversely penetrates the fixed plate 41 is a positional relationship relatively perpendicular to the first direction. One end of the detection push rod 42 penetrates the side wall of the material guiding component 10 and extends into the consumable channel inside the material guiding component 10. The other end of the detection push rod 42 is arranged through the fixed plate 41 and can move along the second direction on the fixed plate 41. The second direction here is a direction perpendicular to the first direction, and the present application provides a photoelectric sensing mechanism 43 at the position of the fixed plate 41 corresponding to the end of the detection push rod 42. When the consumable 50 enters the consumable channel, it will push the detection push rod 42 to move along the second direction on the fixed plate 41 to block the photoelectric sensing mechanism 43.

[0061] Furthermore, the fixed plate 41 can be set on the outer wall of the guide tube 11, and the detection push rod 42 can be extended to the consumable channel inside the guide tube 11 after passing through the fixed plate 41 and the side wall of the guide tube 11 horizontally, and the detection push rod 42 needs to block part of the consumables 50 along the consumable channel in the first direction. At this time, the consumables 50 entering the consumable channel will squeeze the detection push rod 42, causing the detection push rod 42 to move along the second direction, and the end of the detection push rod 42 will block the sensing area formed between the photoelectric sensing mechanisms 43. When the photoelectric sensing mechanism 43 recognizes the blocked state, it is considered that the material guiding device is guiding normally at the current moment; when the material guiding is stopped or the material is cut off, the detection push rod 42 extends to the inside of the guide tube 11 according to the preset position, and the end of the detection push rod 42 cannot block the photoelectric sensing mechanism 43, then it is considered that the material guiding device is guiding abnormally at the current moment, and corresponding maintenance measures are required.

[0062] In a specific embodiment provided in the present application, the above-mentioned photoelectric sensing mechanism 43 can be set in the form of a photoelectric emitter 431 and a photoelectric receiver 432. By setting two sensing plates 44 on the side of the fixed plate 41 away from the material guide tube 11, the above-mentioned photoelectric emitter 431 and the photoelectric receiver 432 are correspondingly set on the two sensing plates 44 to form a sensing area. Of course, the two sensing plates 44 need to be set corresponding to the lateral movement trajectory of the detection push rod 42. When the detection push rod 42 is pushed away by the consumable 50 and enters between the two sensing plates 44, it will block the photoelectric emitter 431 and the photoelectric receiver 432 respectively set on the two sensing plates 44. In this case, it is considered that the material guiding device is guiding normally at the current moment. When the detection push rod 42 is not pushed away by the consumable 50, it will not enter between the two sensing plates 44, nor will it block the photoelectric emitter 431 and the photoelectric receiver 432 respectively set on the two sensing plates 44. In this case, it is considered that the material guiding device is guiding abnormally at the current moment.

[0063] Of course, the above-mentioned photoelectric sensing mechanism 43 can also be set as a sensor form such as a through-beam laser sensor, a diffuse reflection photoelectric sensor, etc. As long as it can be set between the two sensing plates 44 and identify whether the two sensing plates 44 are blocked by the detection push rod 42, any form of the photoelectric sensing mechanism 43 selected is feasible, and this application does not impose further restrictions on this.

[0064] Based on the above-mentioned material guiding device, the present application also provides a consumable material conveying device, which includes a consumable material installation device, a driving device and the above-mentioned material guiding device, wherein the consumable material installation device is used to load consumables, and the driving device is used to connect and drive the material guiding device to work, so as to realize the feeding and / or returning of consumables.

[0065] The present application also provides a 3D printer, including the material guiding device provided in the above embodiment or the consumable material conveying device provided in the above embodiment, which allows the consumable material 50 used in the 3D printing process to enter the consumable channel in the material guide tube 11 through the flexible feeding component 20, enter the gap formed between the active extrusion gear 31 and the driven extrusion gear 32, and then be guided out, thereby realizing the output of the consumable material 50 from the discharge port 13 to cooperate with the 3D printer to realize the printing operation.

[0066] For other details about the above-mentioned consumable material conveying device and 3D printer to implement the above-mentioned technical solution, please refer to the description of the material guiding device provided in the above-mentioned application embodiment, which will not be repeated here.

[0067] The material guiding equipment, consumable material conveying device and 3D printer provided in the embodiments of the present application are provided with an adjusting part to adjust the gap formed between the active extrusion gear and the driven extrusion gear. By pressing the adjusting part to adjust the relative distance of the gap, the manual return of the consumable material is facilitated; a consumable material detection component is provided to detect whether the consumable material is guided normally to avoid the consumable material from being broken during the conveying process; by inferring whether the baffle plate provided on the push rod enters the sensing area formed between the two sensing plates and whether it blocks the photoelectric sensing mechanism provided between the two sensing plates, the consumable material is fed normally; a light-emitting part is provided to provide light for the feeding angle of the consumable material so as to know the feeding status of the consumable material in time; a flexible feeding component is provided that can adaptively swing according to the feeding angle of the consumable material, thereby reducing the wear on the guide tube and the damage to the consumable material, and can effectively improve the quality of 3D printing.

[0068] It can be understood that the various technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above embodiments are merely exemplary embodiments for illustrating the principles of the present application, but the present application is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present application, and such modifications and improvements are also considered to be within the scope of protection of the present application.

Claims

1. A material guiding device, characterized in that: include: A material guide assembly, comprising a material guide tube and a tubular joint, wherein the material guide tube is provided with a consumable material channel, and the tubular joint is provided at the end of the material guide tube; a flexible feed assembly, the flexible feed assembly being movably disposed in the tubular joint; The flexible feeding assembly is configured to be able to adaptively swing relative to the tubular joint according to the feeding angle of the consumables, so that the consumables are guided out from the consumable channel along the first direction during feeding.

2. The material guiding device according to claim 1, characterized in that: The flexible feed assembly includes a guide feed port and a guide feed pipe. The inner diameter of the guide feed port gradually shrinks along the first direction and then communicates with the guide feed pipe.

3. The material guiding device according to claim 1 or 2, characterized in that: The material guiding device further comprises an extrusion component disposed inside the material guiding component; The extrusion assembly includes an active extrusion gear and a driven extrusion gear arranged relatively to each other, and a gap for conveying consumables is arranged between the active extrusion gear and the driven extrusion gear, so that the consumables entering the consumable channel pass through the gap along a first direction and are discharged from the discharge port of the guide tube.

4. The material guiding device according to claim 3, characterized in that: The driven extrusion gear is rotatably embedded in the material guide tube through the driven extrusion rod, and the outer tooth profile of the active extrusion gear is recessed inward to form the gap with the outer side wall of the driven extrusion gear. When the consumable enters the gap and is discharged along the first direction, the driven extrusion gear is driven to rotate synchronously.

5. The material guiding device according to claim 4, characterized in that: The material guiding assembly further comprises an adjusting member for adjusting the gap; One end of the adjusting member is fixedly connected to the material guide tube, and the other end of the adjusting member is extended in a direction close to the flexible feeding assembly. By pressing the adjusting member to change the relative distance between the material guide tube and the active extrusion gear, the gap formed between the active extrusion gear and the driven extrusion gear is adjusted.

6. The material guiding device according to any one of claims 3 to 5, characterized in that: The material guide assembly further includes a material guide frame for mounting the material guide pipe, wherein the material guide pipe is rotatably mounted inside the material guide frame via a supporting connecting rod; The outer side wall of the guide frame is provided with a driving gear for driving the active extrusion gear to rotate, and the driving gear is connected to the active extrusion gear through an active extrusion rod.

7. The material guiding device according to claim 6, characterized in that: An elastic member is provided between the guide frame and the guide tube, one end of the elastic member is in contact with the outer wall of the guide tube, and the other end of the elastic member is arranged to pass through the side wall of the guide frame. The elastic member applies a force in the opposite direction of the guide frame to the guide tube to maintain the gap formed between the active extrusion gear and the driven extrusion gear.

8. The material guiding device according to any one of claims 1 to 7, characterized in that The material guiding device further includes a consumable material detection assembly for detecting the conveying status of the consumable material, wherein the consumable material detection assembly includes a fixed plate mounted on the side wall of the material guiding assembly and a detection push rod provided through the fixed plate; One end of the detection push rod passes through the side wall of the material guide assembly and extends into the consumable channel. The other end of the detection push rod passes through the fixed plate. A photoelectric sensing mechanism is provided at a position on the fixed plate corresponding to the end of the detection push rod. When the consumable enters the consumable channel, the detection push rod is pushed to move on the fixed plate to block the photoelectric sensing mechanism.

9. The material guiding device according to claim 8, characterized in that: The photoelectric sensing mechanism includes a photoelectric emitter and a photoelectric receiver. The fixed plate is provided with two sensing plates. The photoelectric emitter and the photoelectric receiver are correspondingly arranged on the two sensing plates to form a sensing area. The two sensing plates are arranged corresponding to the lateral movement trajectory of the detection push rod.

10. The material guiding device according to any one of claims 1 to 9, characterized in that The material guiding assembly further includes a light emitting member configured to provide light to the feeding angle.

11. A consumable material conveying device, characterized in that: It includes a consumable material installation device, a driving device and a material guiding device; the material guiding device includes a material guiding component and a flexible material feeding component; the material guiding component includes a material guiding tube and a tubular joint, the material guiding tube is provided with a consumable material channel, and the tubular joint is provided at the end of the material guiding tube; The flexible feed assembly is movably arranged in the tubular joint; The flexible feeding assembly is configured to be able to adaptively swing relative to the tubular joint according to the feeding angle of the consumables, so that the consumables are guided out of the consumables channel along the first direction during feeding; The consumables installation device is configured to load consumables, and the driving device is connected to and drives the material guiding device to work so as to realize the feeding and / or returning of the consumables.

12. The consumable material conveying device according to claim 11, wherein: The flexible feed assembly includes a guide feed port and a guide feed pipe. The inner diameter of the guide feed port gradually shrinks along the first direction and then communicates with the guide feed pipe.

13. The consumable material conveying device according to claim 11 or 12, characterized in that: The material guiding device further comprises an extrusion component disposed inside the material guiding component; The extrusion assembly includes an active extrusion gear and a driven extrusion gear arranged relatively to each other, and a gap for conveying consumables is arranged between the active extrusion gear and the driven extrusion gear, so that the consumables entering the consumable channel pass through the gap along a first direction and are discharged from the discharge port of the guide tube.

14. The consumable material conveying device according to claim 13, wherein: The driven extrusion gear is rotatably embedded in the material guide tube through the driven extrusion rod, and the outer tooth profile of the active extrusion gear is recessed inward to form the gap with the outer side wall of the driven extrusion gear. When the consumable enters the gap and is discharged along the first direction, the driven extrusion gear is driven to rotate synchronously.

15. The consumable material conveying device according to claim 14, wherein: The material guiding assembly further comprises an adjusting member for adjusting the gap; One end of the adjusting member is fixedly connected to the material guide tube, and the other end of the adjusting member is extended in a direction close to the flexible feeding assembly. By pressing the adjusting member to change the relative distance between the material guide tube and the active extrusion gear, the gap formed between the active extrusion gear and the driven extrusion gear is adjusted.

16. The consumable material conveying device according to any one of claims 13 to 15, characterized in that: The material guide assembly further includes a material guide frame for mounting the material guide pipe, wherein the material guide pipe is rotatably mounted inside the material guide frame via a supporting connecting rod; The outer side wall of the guide frame is provided with a driving gear for driving the active extrusion gear to rotate, and the driving gear is connected to the active extrusion gear through an active extrusion rod.

17. The consumable material conveying device according to claim 16, wherein: An elastic member is provided between the guide frame and the guide tube, one end of the elastic member is in contact with the outer wall of the guide tube, and the other end of the elastic member is arranged to pass through the side wall of the guide frame. The elastic member applies a force in the opposite direction of the guide frame to the guide tube to maintain the gap formed between the active extrusion gear and the driven extrusion gear.

18. The consumable material conveying device according to any one of claims 11 to 17, characterized in that: The material guiding device further includes a consumable material detection assembly for detecting the conveying status of the consumable material, wherein the consumable material detection assembly includes a fixed plate mounted on the side wall of the material guiding assembly and a detection push rod provided through the fixed plate; One end of the detection push rod passes through the side wall of the material guide assembly and extends into the consumables channel. The other end of the detection push rod passes through the fixed plate. A photoelectric sensing mechanism is provided at a position of the fixed plate corresponding to the end of the detection push rod. When the consumables enter the consumables channel, the detection push rod is pushed. The push rod moves on the fixed plate to shield the photoelectric sensing mechanism.

19. The consumable material conveying device according to any one of claims 11 to 18, characterized in that: The material guiding assembly further includes a light emitting member configured to provide light to the feeding angle.

20. A 3D printer, characterized in that: The 3D printer includes the material guiding device according to any one of claims 1 to 10, or includes the consumable material conveying device according to any one of claims 11 to 19.

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