Consumable switching device and 3D printer

Abstract

A consumable switching device and a 3D printer, the consumable switching device comprising a frame (1); a consumable cutting module (3), which is arranged on the frame (1) and is in communication with a feeding port (11) through a first main consumable channel (32), the consumable cutting module (3) being configured to selectively cut the consumable passing through the first main consumable channel (32); and a consumable recycling module (4), which is configured to recycle the residual consumable after cutting by the consumable cutting module (3); the consumable recycling module (4) comprises a first transmission member (41) and a material pushing block (42), the material pushing block (42) being provided with a second main consumable channel (421) for connecting to the first main consumable channel (32), and the material pushing block (42) being configured to be driven by the first transmission member (41) to move between a first position (B) and a second position (C).

Description

Consumable material switching device and 3D printer

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202420277966.9 filed on February 5, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present application relates to the field of 3D printing technology, and in particular to a consumables switching device and a 3D printer. Background Art

[0004] 3D printing is a technology that uses consumables to construct three-dimensional objects layer by layer, based on digital model files. When a 3D printer constructs a three-dimensional product layer by layer, consumables are placed in the 3D print head, heated and melted, and then ejected into a stacked print. During printing, consumables are cut to allow for material replacement or return.

[0005] Summary of the Invention

[0006] The purpose of this application is to solve the above problems and provide a consumables switching device and a 3D printer.

[0007] In order to solve the above technical problems, the technical solutions adopted in this application are as follows:

[0008] In a first aspect, a consumable material switching device is provided, comprising:

[0009] A frame, wherein both ends of the frame are respectively provided with a feed port and a discharge port;

[0010] a consumable material cutting module, disposed on the frame and connected to the feed port through the first consumable material main channel, the consumable material cutting module being configured to selectively cut the consumable material passing through the first consumable material main channel;

[0011] a consumables recycling module, configured to recycle the remaining consumables after being cut by the consumables cutting module;

[0012] In which, the consumable recovery module includes a first transmission member linked to the consumable cutting module, and a pushing block connected to the first transmission member, and the pushing block is provided with a second consumable main channel docking with the first consumable main channel; the pushing block is configured to be driven by the first transmission member and move between a first position and a second position; at the first position, the first consumable main channel is connected to the second consumable main channel, and a blanking port is provided at the second position or near the second position.

[0013] In one or more embodiments, the consumable material cutting module includes a driving member and a rotating base driven by the driving member, and a cutting member provided on the rotating base; the first transmission member is cooperatively connected with the rotating base.

[0014] In one or more embodiments, a consumable through hole arranged along the first direction is provided on the central axis of the rotating seat, a cutting channel arranged along the first direction is provided in the consumable through hole, the cutting channel is eccentrically arranged relative to the central axis of the rotating seat, and the cutting channel is respectively connected to the first consumable main channel and the second consumable main channel; the second consumable main channel is arranged on a plane corresponding to the pushing block and the first surface of the frame, and a first consumable sensing component is provided at the corresponding position of the second consumable main channel.

[0015] In one or more embodiments, the frame is provided on a fixed seat near the rotating seat area, and the fixed seat includes a first part connected to the frame and a second part extending into the consumable through hole; the first consumable main channel is provided on the first surface of the first part, and the second consumable sensing part is located at the first consumable main channel; the cutting channel is provided in the second part.

[0016] In one or more embodiments, the cutting member is provided at one end of the rotating seat close to the discharge port, and is driven by the rotating seat to cut the consumables passing through the first consumable main channel; the first transmission member is a rack arranged along the second direction, and the rotating seat is provided with an incomplete gear that meshes with the first transmission member.

[0017] In one or more embodiments, an elastic reset member is provided on the side of the push block corresponding to the blanking port, and the elastic reset member is arranged along the second direction; a guide column is provided on the side of the push block away from the elastic reset member, and a first guide seat cooperating with the guide column is provided on the frame; a guide portion is provided at the end of the first transmission member, and a second guide seat connected to the guide portion is provided on the frame.

[0018] In one or more embodiments, a blanking channel connected to the blanking port is provided on the second surface of the frame.

[0019] In one or more embodiments, the consumable material cutting module further includes a cutting piece detection component, and the cutting piece detection component is configured to detect the rotational position of the cutting piece.

[0020] In one or more embodiments, the consumable switching device also includes a consumable conveying channel arranged between the first consumable main channel and the feed port, the consumable conveying channel includes a plurality of branch channels connected to the feed port and a main conveying channel connected to the first consumable main channel, and the branch channels intersect with the main conveying channel; the number of the branch channels is greater than or equal to 2, and the feed port is arranged corresponding to the branch channels.

[0021] In a second aspect, a 3D printer is provided, wherein the 3D printer includes the consumable material switching device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is an overall schematic diagram of a consumables switching device provided by one or more embodiments of the present application;

[0023] FIG2 is a schematic diagram of the installation of a consumable cutting module and a consumable recycling module according to one or more embodiments of the present application;

[0024] FIG3 is a schematic diagram illustrating the connection between a consumable cutting module and a consumable recycling module according to one or more embodiments of the present application;

[0025] FIG4 is a schematic diagram of the assembly of a rotating base according to one or more embodiments of the present application;

[0026] FIG5 is a schematic structural diagram of a pusher block provided in one or more embodiments of the present application;

[0027] FIG6 is a schematic diagram of the connection structure of the fixed base and the rotating base provided in one or more embodiments of the present application;

[0028] FIG7 is a schematic structural diagram of a consumables delivery channel provided in one or more embodiments of the present application;

[0029] FIG8 is a schematic diagram of the state between the cutting piece and the cutting channel when no cutting is performed according to one or more embodiments of the present application;

[0030] FIG9 is a schematic diagram of the state between the cutting piece and the cutting channel during cutting according to one or more embodiments of the present application.

[0031] Among them, 1-frame, 11-feed port, 12-discharge port, 13-dropping port, 14-first guide seat, 15-second guide seat, 16-sensor, 2-consumable material transmission channel, 21-branch channel, 22-main transmission channel, 3-consumable material cutting module, 31-driving member, 32-first consumable material main channel, 321-second consumable sensing member, 33-rotating seat, 331-consumable material through hole, 34-cutting member, 35-cutting channel , 36- baffle, 37- fixed seat, 371- first part, 372- second part, 4- consumables recovery module, 41- first transmission member, 411- guide part, 42- pushing block, 421- second consumables main channel, 422- guide column, 423- first consumables sensing member, 43- elastic reset member, 44- incomplete gear, A- first surface, B- first position, C- second position, X- first direction, Y- second direction. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0033] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0034] In this application, descriptions such as “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0035] In the description of this application, the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] In the prior art, a cutting device is generally provided on the 3D printing nozzle without performing the cutting operation. This method increases the weight of the 3D printing nozzle and reduces the operational flexibility of the 3D printing nozzle. In addition, the consumable cutting structure in the prior art does not recycle the consumables formed after cutting, resulting in waste of raw materials and the possibility of cross contamination.

[0037] As shown in Figures 1 to 3, the consumable switching device described in this application includes:

[0038] A frame 1, wherein a feed port 11 and a discharge port 12 are respectively provided at both ends of the frame 1; optionally, the number of the discharge port 12 is 1, and the number of the feed port 11 is at least 1, and the number of the feed port 11 can be specifically selected according to actual needs;

[0039] a consumable material cutting module 3, which is provided on the frame 1 and communicates with the feed port 11 through a first consumable material main channel 32, and is configured to selectively cut consumable materials passing through the first consumable material main channel 32;

[0040] The consumables recycling module 4 is configured to recycle the remaining consumables after being cut by the consumables cutting module 3;

[0041] The consumables recovery module 4 is linked with the consumables cutting module 3; wherein, the consumables recovery module 4 includes a first transmission member 41 linked with the consumables cutting module 3, and a pushing block 42 connected to the first transmission member 41; as shown in Figure 5, the pushing block 42 is provided with a second consumables main channel 421 connected to the first consumables main channel 32; the pushing block 42 is configured to be driven by the first transmission member 41 and move at a first position B and a second position C; at the first position, the first consumables main channel 32 is connected to the second consumables main channel 421, and a blanking port is provided at the second position C or near the second position C.

[0042] When in use, the pushing block 42 slides on the first surface A of the frame 1, and the pushing block 42 is provided with a second consumable main channel 421 which is connected to the first consumable main channel 32 of the consumable conveying channel 2; the frame 1 is provided with a drop-out port 13, and the drop-out port 13 is arranged on the moving path of the pushing block 42. When the pushing block 42 moves from the first position B to the second position C, the consumables remaining in the second consumable main channel 421 are carried to the position corresponding to the drop-out port 13, and the remaining consumables fall from the drop-out port 13, and the pushing block 42 returns to the first position B.

[0043] The consumable switching device described in the present application is externally mounted on the print head as a separate device, which realizes the function of cutting consumables while avoiding the increase in the weight of the print head assembly, thereby ensuring the printing accuracy of the print head and thus ensuring the accuracy of the printed model; in addition, the consumable switching device is provided with a consumable recovery module, which is linked to the consumable cutting module 3. After the consumable cutting module 3 cuts the consumables, the consumables remaining in the pushing block 42 are recovered, and the recovered consumables can be collected and reused. At the same time, the consumables remaining in the second consumable main channel 421 after cutting are recovered by the consumable recovery module 4, thereby avoiding cross-contamination of the subsequent consumables by the residual consumables, thereby ensuring the printing quality.

[0044] The consumable material cutting module 3 includes a driving member 31 , a rotating base 33 driven by the driving member 31 , and a cutting member 34 provided on the rotating base 33 ; the first transmission member 41 is cooperatively connected with the rotating base 33 .

[0045] As shown in Figure 4, a consumable through hole 331 arranged along the first direction is provided on the central axis of the rotating seat 33, and a cutting channel 35 arranged along the first direction is provided in the consumable through hole 331. The cutting channel 35 is eccentrically arranged relative to the central axis of the rotating seat 33, and the cutting channel 35 is respectively connected to the first consumable main channel 32 and the second consumable main channel 421; the second consumable main channel 421 is provided on the plane corresponding to the pushing block 42 and the first surface A of the frame 1, and a first consumable sensor 423 is provided at the corresponding position of the second consumable main channel 421, and the first consumable sensor 423 is configured to detect whether the consumable is in the second consumable main channel 42.

[0046] As shown in Figure 6, the frame 1 is provided with a fixed 37 in the area near the rotating seat 33, and the fixed seat 37 includes a first part 371 connected to the frame 1 and a second part 372 extending into the consumable through hole 331; the first consumable main channel 32 is provided on the first surface A of the first part 371, and the second consumable sensor 321 is provided at the first consumable main channel 32, and the second consumable sensor 321 is configured to detect whether the consumable passes through the first consumable main channel 32; the cutting channel 35 is provided in the second part 372.

[0047] Specifically, the second portion 372 is cylindrical and coaxially disposed with the consumable material through hole 331. The cutting channel 35 is eccentrically disposed relative to the central axis of the second portion 372. A rotation bearing is disposed between the outer wall of the second portion 372 and the inner wall of the consumable material through hole 331. The fixed seat 37 serves to mount the rotating seat 33. The rotation bearing enables the rotating seat 33 to rotate under the drive of the driving member 31 while the second portion 372 remains stationary relative to the rotating seat 33. The cutting member 34 is disposed at an end of the rotating seat 33 near the discharge port 12 and, driven by the rotating seat 33, cuts the consumable material passing through the first consumable material main channel 32. In one or more embodiments, the cutting member 34 is disposed on an end face of the rotating seat 33 near the pusher block 42. The first transmission member 41 is a rack disposed along the second direction Y. The rotating seat 33 is provided with an incomplete gear 44 that meshes with the first transmission member 41.

[0048] The cutting member 34 is arranged perpendicular to the axial direction of the rotating base 33. When not cutting material, the central axis of the rotating base 33 is projected onto the cutting member 34 along the first direction X. When cutting consumables, the consumables pass through the cutting channel 35, and the cutting member 34 rotates under the drive of the rotating base 33. When the cutting member 34 rotates to the area corresponding to the cutting channel 35, the cutting channel 35 is projected onto the cutting member 34, and the cutting member 34 cuts the consumables.

[0049] In one or more embodiments, the driving member 31 is preferably a drive motor, mounted on the second surface of the frame 1. Specifically, the rotating end of the driving member 31 is provided with a second transmission member, the rotating seat 33 and the second transmission member are gears, and the rotating seat 33 is preferably a gear seat that meshes with the second transmission member. The rotation of the driving member 31 drives the second transmission member to rotate, and the second transmission member drives the rotating seat 33 to rotate. It is understood that the number of second transmission members provided can be adaptively adjusted according to the overall structural layout of the consumable switching device. The elastic return member 43 is arranged along the second direction Y.

[0050] Referring to Figures 1 to 3, an elastic reset member 43 is provided on the side of the pusher block 42 corresponding to the blanking port 13, and the elastic reset member 43 is arranged along the second direction Y; a guide column 422 is provided on the side of the pusher block 42 away from the elastic reset member 43, and a first guide seat 14 is provided on the frame 1 to cooperate with the guide column 422; further, the guide column 422 is arranged along the first direction X, and a guide hole is provided on the first guide seat 14 for the guide column 422 to pass through. The first guide seat 14 guides the pusher block 42, preventing the pusher block 42 from deflecting when moving along the first direction X. A guide portion 411 is provided at the end of the first transmission member 41, and a second guide seat 15 connected to the guide portion 411 is provided on the frame 1; the second guide seat 15 is provided with a guide groove that cooperates with the guide portion 411, and the guide portion 411 moves in the guide groove. The second guide seat 15 improves the stability of the first transmission member 41 in moving along the first direction X, and avoids the deviation of the first transmission member 41. The elastic return member 43 is perpendicular to the second consumable main channel 421; the elastic return member 43 is preferably a spring.

[0051] The second side of the frame 1 is provided with a material drop channel connected to the drop opening 13; the drop channel is connected to the consumables collection box. The drop channel is inclined from the drop opening 13 toward the edge of the frame 1 to facilitate the rolling of consumables. It should be noted that the second side of the frame is the side facing away from the first side of the frame.

[0052] The consumable material cutting module 3 also includes a cutting piece detection assembly, which is configured to detect the rotational position of the cutting piece 34. The cutting piece detection assembly includes one of a mechanical touch detection assembly, a photoelectric sensor detection assembly, or a Hall effect sensor assembly. As shown in Figure 3, in some embodiments, the cutting piece detection assembly includes a baffle 36 disposed on the rotating base 33 and a sensor 16 disposed on the frame 1 and cooperating with the baffle 36. The baffle 36 is disposed corresponding to the cutting piece 34.

[0053] During use, when cutting is not required, the baffle 36 is arranged corresponding to the sensing element 16, and the cutting element detection assembly detects the position of the cutting element 34 in real time, ensuring that the cutting element 34 does not damage the consumables passing through the cutting channel 35 when cutting is not required. During cutting, driven by the rotating base 33, the cutting element 34 and the baffle 36 rotate synchronously, and the baffle 36 moves away from the sensing element 16. The setting of the cutting element detection assembly detects the position of the cutting element 34, ensuring that the cutting element 34 avoids the cutting channel 35 when not cutting consumables, and does not damage the consumables passing through the cutting channel 35.

[0054] Referring to Figures 1 and 7, the consumable switching device also includes a consumable conveying channel 2 arranged between the first consumable main channel 32 and the feed port 11, and the consumable conveying channel 2 is arranged on the first side A of the frame 1. The consumable conveying channel 2 includes several branch channels 21 connected to the feed port 11 and a main conveying channel 22 connected to the first consumable main channel 32, and the branch channels 21 intersect with the main conveying channel 22; the number of the branch channels 21 is greater than or equal to 2, and the feed port 11 is arranged corresponding to the branch channels 21.

[0055] In one or more embodiments, the number of branch channels 21 is preferably 4, and after two adjacent branch channels 21 intersect to form an intermediate intersection, the two adjacent intermediate intersections then intersect and connect to the main conveying channel 22. The feed port 11 is integrally formed on the frame 1.

[0056] The consumables transfer channel 2 can connect to multiple storage boxes with different colors through several branch channels 21. Depending on the printing requirements, different colors of consumables can be selected for printing, thereby achieving multi-color 3D printing. In some embodiments, the consumables transfer channel 2 is integrally formed with the frame 1. The consumables transfer channel 2 is formed by the first surface A of the frame 1 being recessed toward the second surface. A cover is provided on the first surface A of the frame 1, and the cover is provided to cover the consumables transfer channel 2. The provision of the cover protects and guides the consumables, preventing them from being contaminated or damaged by bending in the consumables transfer channel 2.

[0057] The consumable switching device also includes a shell, and the shell cover is arranged on both sides of the frame 1 to form an installation chamber together with the frame 1. Specifically, the shell includes a first shell and a second shell, the first shell cover is arranged on the first side A of the frame 1, and the second shell cover is arranged on the second side of the frame 1; the edge of the frame 1 is provided with a ridge connected to the first shell and the second shell respectively, and the first shell and the second shell are respectively connected to the ridge; the frame 1 and the corner areas of the first shell and the second shell are fixedly connected to each other through fixed connectors. The feed port 11 is funnel-shaped as a whole, and the feed port 11 guides the consumables, avoiding bending of the consumables when entering the consumable conveying channel 2 from the feed port 11.

[0058] The consumable switching device described in this application comprises the following steps:

[0059] When there is no need to cut the consumables, the consumables are fed from the feed port 11 and sequentially pass through the consumables conveying channel 2, the cutting channel 35 and the second consumables main channel 421, and then conveyed to the lower device from the discharge port 12. As shown in FIG8 , during the consumables conveying process, the cutting member 34 is arranged to avoid the cutting channel 35, and at this time, the pushing block 42 is located in the first position;

[0060] During cutting, the driving member 31 drives the rotating seat 33 to rotate, and the rotating seat 33 drives the cutting member 34 and the incomplete gear 44 to rotate, and the incomplete gear 44 is not engaged with the first transmission member 41, and the first transmission member 41 does not move; as shown in Figure 9, when the cutting member 34 rotates to correspond to the cutting channel 35, the consumables passing through the cutting channel 35 are cut, and the incomplete gear 44 rotates to engage with the first transmission member 41, and the first transmission member 41 moves along the second direction Y, driving the pushing block 42 to move along the second direction, and the consumables remaining in the second consumable main channel 421 are transported to the blanking port 13 for recycling. The consumable switching device provided in the present application realizes the cutting and recycling of consumables at the same time through the setting of the consumable cutting module 3 and the consumable recycling module 4. The consumable cutting module 3 is external to the 3D printing nozzle, and the consumable recycling module 4 recycles the consumables. The recycled consumables can be reused to save production costs. At the same time, the residual consumables are recycled to avoid cross contamination of consumables during the printing process.

[0061] An embodiment of the present application further provides a 3D printer, which includes the consumable switching device as described above.

[0062] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the 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.

[0063] The above embodiments merely represent preferred embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A consumables switching device, characterized in that: include: A frame, wherein both ends of the frame are respectively provided with a feed port and a discharge port; a consumable material cutting module, disposed on the frame and connected to the feed port through the first consumable material main channel, the consumable material cutting module being configured to selectively cut the consumable material passing through the first consumable material main channel; a consumables recycling module, configured to recycle the remaining consumables after being cut by the consumables cutting module; In which, the consumable recovery module includes a first transmission member linked to the consumable cutting module and a pushing block connected to the first transmission member, and the pushing block is provided with a second consumable main channel docking with the first consumable main channel; the pushing block is configured to be driven by the first transmission member and move between a first position and a second position; at the first position, the first consumable main channel is connected to the second consumable main channel, and a blanking port is provided at the second position or near the second position.

2. The consumable material switching device according to claim 1, characterized in that: The consumable material cutting module includes a driving member, a rotating base driven by the driving member, and a cutting member provided on the rotating base; the first transmission member is cooperatively connected with the rotating base.

3. The consumable material switching device according to claim 2, characterized in that: A consumable through hole arranged along the first direction is provided on the central axis of the rotating seat, and a cutting channel arranged along the first direction is provided in the consumable through hole. The cutting channel is eccentrically arranged relative to the central axis of the rotating seat, and the cutting channel is respectively connected to the first consumable main channel and the second consumable main channel; the second consumable main channel is provided on a plane corresponding to the pushing block and the first surface of the frame, and a first consumable sensing component is provided at the corresponding position of the second consumable main channel.

4. The consumable material switching device according to claim 3, characterized in that: The frame is arranged on a fixed seat near the rotating seat area, and the fixed seat includes a first part connected to the frame and a second part extending into the consumable through hole; the first consumable main channel is arranged on the first surface of the first part, and the second consumable sensor is located at the first consumable main channel; the cutting channel is arranged in the second part.

5. The consumable material switching device according to any one of claims 2 to 4, characterized in that: The cutting piece is arranged at one end of the rotating seat close to the discharge port, and cuts the consumables passing through the first consumable main channel under the drive of the rotating seat; the first transmission piece is a rack arranged along the second direction, and the rotating seat is provided with an incomplete gear that meshes with the first transmission piece.

6. The consumable material switching device according to any one of claims 1 to 5, characterized in that: An elastic reset member is provided on the side of the push block corresponding to the blanking port, and the elastic reset member is arranged along the second direction; a guide column is provided on the side of the push block away from the elastic reset member, and a first guide seat cooperating with the guide column is provided on the frame; a guide portion is provided at the end of the first transmission member, and a second guide seat connected to the guide portion is provided on the frame.

7. The consumable material switching device according to any one of claims 1 to 6, characterized in that: A blanking channel connected to the blanking opening is provided on the second surface of the mounting plate frame.

8. The consumable material switching device according to any one of claims 1 to 7, characterized in that: The consumable material cutting module further includes a cutting piece detection component, which is configured to detect the rotation position of the cutting piece.

9. The consumable material switching device according to claim 8, characterized in that: The consumable material cutting module includes a driving member, a rotating base driven by the driving member, and a cutting member arranged on the rotating base; the first transmission member is connected to the rotating base; the cutting member detection component includes a baffle arranged on the rotating base, and a sensing member arranged on the frame and cooperating with the baffle, and the baffle is arranged corresponding to the cutting member.

10. The consumable material switching device according to any one of claims 1 to 9, characterized in that: The consumable switching device also includes a consumable conveying channel arranged between the first consumable main channel and the feed port, the consumable conveying channel includes several branch channels connected to the feed port and a main conveying channel connected to the first consumable main channel, and the branch channels intersect with the main conveying channel; the number of the branch channels is greater than or equal to 2, and the feed port is arranged corresponding to the branch channels.

11. The consumable material switching device according to claim 10, characterized in that: The number of the branch channels is preferably 4. After two adjacent branch channels intersect to form an intermediate intersection area, the two adjacent intermediate intersection areas then intersect and connect to the main transmission channel.

12. A 3D printer, characterized in that: The 3D printer includes a consumable material switching device, and the consumable material switching device includes: A frame, wherein both ends of the frame are respectively provided with a feed port and a discharge port; a consumable material cutting module, disposed on the frame and connected to the feed port through the first consumable material main channel, the consumable material cutting module being configured to selectively cut the consumable material passing through the first consumable material main channel; a consumables recycling module, configured to recycle the remaining consumables after being cut by the consumables cutting module; In which, the consumable recovery module includes a first transmission member linked to the consumable cutting module and a pushing block connected to the first transmission member, and the pushing block is provided with a second consumable main channel docking with the first consumable main channel; the pushing block is configured to be driven by the first transmission member and move between a first position and a second position; at the first position, the first consumable main channel is connected to the second consumable main channel, and a blanking port is provided at the second position or near the second position.

13. The 3D printer according to claim 12, wherein: The consumable material cutting module includes a driving member, a rotating base driven by the driving member, and a cutting member provided on the rotating base; the first transmission member is cooperatively connected with the rotating base.

14. The 3D printer according to claim 13, wherein: A consumable through hole arranged along the first direction is provided on the central axis of the rotating seat, and a cutting channel arranged along the first direction is provided in the consumable through hole. The cutting channel is eccentrically arranged relative to the central axis of the rotating seat, and the cutting channel is respectively connected to the first consumable main channel and the second consumable main channel; the second consumable main channel is provided on a plane corresponding to the pushing block and the first surface of the frame, and a first consumable sensing component is provided at the corresponding position of the second consumable main channel.

15. The 3D printer according to claim 14, wherein: The frame is arranged on a fixed seat near the rotating seat area, and the fixed seat includes a first part connected to the frame and a second part extending into the consumable through hole; the first consumable main channel is arranged on the first surface of the first part, and the second consumable sensor is located at the first consumable main channel; the cutting channel is arranged in the second part.

16. The 3D printer according to any one of claims 13 to 15, characterized in that: The cutting piece is arranged at one end of the rotating seat close to the discharge port, and cuts the consumables passing through the first consumable main channel under the drive of the rotating seat; the first transmission piece is a rack arranged along the second direction, and the rotating seat is provided with an incomplete gear that meshes with the first transmission piece.

17. The 3D printer according to any one of claims 12 to 16, wherein: An elastic reset member is provided on the side of the push block corresponding to the blanking port, and the elastic reset member is arranged along the second direction; a guide column is provided on the side of the push block away from the elastic reset member, and a first guide seat cooperating with the guide column is provided on the frame; a guide portion is provided at the end of the first transmission member, and a second guide seat connected to the guide portion is provided on the frame.

18. The 3D printer according to any one of claims 12 to 17, wherein: A blanking channel connected to the blanking opening is provided on the second surface of the mounting plate frame.

19. The 3D printer according to any one of claims 12 to 18, wherein: The consumable material cutting module further includes a cutting piece detection component, which is configured to detect the rotation position of the cutting piece.

20. The 3D printer according to any one of claims 12 to 19, characterized in that: The consumable switching device also includes a consumable conveying channel arranged between the first consumable main channel and the feed port, the consumable conveying channel includes several branch channels connected to the feed port and a main conveying channel connected to the first consumable main channel, and the branch channels intersect with the main conveying channel; the number of the branch channels is greater than or equal to 2, and the feed port is arranged corresponding to the branch channels.

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