Transmission apparatus for consumables, printhead for consumables, and 3D printer

Abstract

The present application discloses a transmission apparatus for consumables, a printhead for consumables, and a 3D printer. The transmission apparatus for consumables comprises a first drive assembly, a driving wheel, a second drive assembly, and a driven wheel. The first drive assembly comprises a first drive member and a first transmission shaft driven by the first drive member. The driving wheel is sleevingly mounted on the first transmission shaft, and the second drive assembly is configured to drive the driving wheel to axially move along the first transmission shaft. The first drive assembly and / or the second drive assembly can drive the driving wheel to a position forming a transmission fit with the driven wheel, and the driving wheel and the driven wheel transmit motion to transmit consumables. According to the transmission apparatus for consumables of the present application, automatic switching and extrusion of multiple consumables is achieved, and the mounting precision between the first transmission shaft and the driving wheel is reduced.

Description

Consumable delivery device, consumable print head, and 3D printer

[0001] This application claims priority to Chinese Patent Application No. 202410678421.3, filed on May 28, 2024, entitled "Consumables Transfer Device, Consumables Printhead and 3D Printer", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of 3D printing technology, and in particular to a filament delivery device, a filament print head, and a 3D printer. Background Technology

[0003] A 3D printer is a machine that uses digital model files as a basis to print three-dimensional objects layer by layer with filament. 3D printers have been applied to printing multi-color products. However, existing 3D printers have low levels of automation in their remote filament delivery systems and require high installation precision. Therefore, it is essential to provide a highly automated filament delivery system, print head, and 3D printer with lower installation precision requirements for 3D printing. Summary of the Invention

[0004] The purpose of this application is to solve the above-mentioned problems and provide a filament transport device, a filament print head, and a 3D printer. The filament transport device has a high degree of automation and low installation accuracy requirements, and the filament transport is highly automated and easy to operate.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows:

[0006] In a first aspect, this application provides a consumables delivery device, comprising:

[0007] A first drive assembly, the first drive assembly includes a first drive member and a first transmission shaft, the first drive member being drively connected to the first transmission shaft;

[0008] A drive wheel is sleeved and mounted on the first drive shaft, and the first drive member is configured to drive the first drive shaft to rotate, thereby driving the drive wheel to rotate.

[0009] A second drive assembly is connected to the drive wheel and is configured to drive the drive wheel to move axially along the first drive shaft.

[0010] The driven wheel is located on the side of the driving wheel. The first drive assembly and / or the second drive assembly can drive the driving wheel to a position that forms a transmission engagement with the driven wheel. The transmission motion between the driving wheel and the driven wheel transmits consumables.

[0011] Optionally, the second drive assembly includes a second drive member, a second transmission shaft, and a first sliding member. The second drive member is drivenly connected to the second transmission shaft, the second transmission shaft is drivenly connected to the first sliding member, the second transmission shaft is arranged parallel to the first transmission shaft, and the first sliding member is drivenly connected to the drive wheel. The second drive assembly is configured to drive the drive wheel to move axially along the first transmission shaft.

[0012] Optionally, the first drive shaft is a light shaft with a polygonal cross-section.

[0013] Optionally, the driving wheel, the first sliding member, and the driven wheel are all made of rubber material; the outer wall of the driving wheel is provided with a protruding structure.

[0014] Optionally, the consumable conveying device further includes a feed pipe and a discharge pipe that are arranged in a one-to-one correspondence, the consumables are conveyed from the feed pipe to the discharge pipe, and the driven wheel is arranged on the conveying path of the consumables.

[0015] Optionally, there may be multiple driven wheels, which are arranged axially on one side of the first drive shaft, and the extended length of the multiple driven wheels after arrangement is less than the length of the first drive shaft.

[0016] Optionally, there are multiple driven wheels, which are arranged axially on opposite sides of the first transmission shaft. The extended length of the driven wheels on both sides is less than the length of the first transmission shaft, and the driven wheels on both sides are staggered.

[0017] Optionally, the consumable transmission device further includes a first transmission assembly, which includes a third transmission shaft arranged parallel to the first transmission shaft and a second driven wheel disposed on the third transmission shaft. The second driven wheel is tractively connected between the driving wheel and the driven wheel, and the second driven wheel cooperates with the driven wheel to transmit consumables.

[0018] Secondly, this application provides a consumable printhead, which is connected to at least two consumable transport devices as described above; the consumable printhead includes an extrusion mechanism and a nozzle mechanism; the extrusion mechanism is connected to at least two of the consumable transport devices, and the extrusion mechanism is configured to receive consumables transported by the consumable transport devices and selectively extrude one of them; the nozzle mechanism is configured to move and heat any one of the consumables transported by the extrusion mechanism to a molten state before ejecting it.

[0019] Optionally, the consumable transport device includes a first drive assembly, a drive wheel, a second drive assembly, and a driven wheel; the first drive assembly includes a first drive member and a first transmission shaft, the first drive member being drively connected to the first transmission shaft, the first transmission shaft being an optical axis with a polygonal cross-section; the drive wheel is sleeved and mounted on the first transmission shaft, the first drive member being configured to drive the first transmission shaft to rotate, thereby driving the drive wheel to rotate; the second drive assembly is drively connected to the drive wheel, the second drive assembly being configured to drive the drive wheel to move axially along the first transmission shaft; the driven wheel is located on the side of the drive wheel, the first drive assembly and / or the second drive assembly can drive the drive wheel to a position that forms a transmission engagement with the driven wheel, the drive wheel and the driven wheel transmitting consumables through transmission motion.

[0020] Optionally, the second drive assembly includes a second drive member, a second transmission shaft, and a first sliding member. The second drive member is drivenly connected to the second transmission shaft, the second transmission shaft is drivenly connected to the first sliding member, the second transmission shaft is arranged parallel to the first transmission shaft, and the first sliding member is drivenly connected to the drive wheel. The second drive assembly is configured to drive the drive wheel to move axially along the first transmission shaft.

[0021] Optionally, the first drive shaft is a light shaft with a polygonal cross-section.

[0022] Optionally, the driving wheel, the first sliding member, and the driven wheel are all made of rubber material; the outer wall of the driving wheel is provided with a protruding structure.

[0023] Optionally, the consumable conveying device further includes a feed pipe and a discharge pipe that are arranged in a one-to-one correspondence, the consumables are conveyed from the feed pipe to the discharge pipe, and the driven wheel is arranged on the conveying path of the consumables.

[0024] Optionally, there may be multiple driven wheels, which are arranged axially on one side of the first drive shaft, and the extended length of the multiple driven wheels after arrangement is less than the length of the first drive shaft.

[0025] Optionally, there are multiple driven wheels, which are arranged axially on opposite sides of the first transmission shaft. The extended length of the driven wheels on both sides is less than the length of the first transmission shaft, and the driven wheels on both sides are staggered.

[0026] Optionally, the consumable transmission device further includes a first transmission assembly, which includes a third transmission shaft arranged parallel to the first transmission shaft and a third driven wheel disposed on the third transmission shaft. The third driven wheel is tractively connected between the driving wheel and the driven wheel, and the third driven wheel cooperates with the driven wheel to transmit consumables.

[0027] Optionally, the extrusion mechanism includes an extrusion assembly and a feeding assembly; the nozzle mechanism includes a third drive assembly and a nozzle assembly driven by the third drive assembly; the nozzle assembly includes a first connector and a nozzle, the first connector is configured to cooperate with the feeding assembly, the nozzle is disposed on the first connector, and the first connector is driven by the third drive assembly.

[0028] Optionally, the third drive assembly includes a fourth drive shaft, a second sliding member, and a transmission member. The second sliding member is sleeved on the fourth drive shaft, and the two ends of the transmission member are respectively connected to the fourth drive shaft and the first connecting member.

[0029] Thirdly, this application provides a 3D printer that includes the filament delivery device and / or the filament print head as described above.

[0030] The beneficial effects of this application include at least the following:

[0031] The consumables transfer device described in this application includes a method in which the first drive assembly and the second drive assembly cooperate to drive the drive wheel to move or rotate along the first transmission shaft and then engage with the driven wheel to extrude consumables, thereby realizing the automatic conversion and extrusion of multiple consumables. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the consumables transmission device of this application;

[0033] Figure 2 is another structural schematic diagram of the consumables transmission device of this application;

[0034] Figure 3 is a schematic diagram of the consumable transmission device equipped with the first transmission component;

[0035] Figure 4 is another structural schematic diagram of a consumable transmission device equipped with a first transmission component;

[0036] Figure 5 is a schematic diagram of the structure of the consumable printhead of this application.

[0037] Among them, 1-drive wheel, 11-protruding structure, 2-first drive assembly, 21-first drive member, 22-first transmission shaft, 3-second drive assembly, 31-second drive member, 32-second transmission shaft, 33-first sliding member, 4-driven wheel, 5-feed pipe, 6-discharge pipe, 7-extrusion mechanism, 71-extrusion assembly, 711-fifth transmission shaft, 712-first drive wheel, 713-first driven wheel, 714-second driven wheel, 72-material conveying assembly, 721-first discharge pipe, 722-second connecting member, 723-discharge hole, 8-nozzle mechanism, 81-third drive assembly, 811-fourth transmission shaft, 812-second sliding member, 813-transmission member, 82-nozzle assembly, 821-first connecting member, 822-nozzle, 9-first transmission assembly, 91-third transmission shaft, 92-third driven wheel, 10-consumables. Detailed Implementation

[0038] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0039] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0040] In this application, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0041] 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 are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Example

[0043] This application provides a consumables transport device, as shown in Figures 1 and 2. The consumables transport device includes:

[0044] The first drive assembly 2 includes a first drive member 21 and a first transmission shaft 22, wherein the first drive member 21 is connected to the first transmission shaft 22 in a transmission manner; in other embodiments, the first transmission shaft 22 is provided with a first limiting member at the end away from the first drive member 21 to prevent the drive wheel 1 from disengaging.

[0045] The drive wheel 1 is sleeved and mounted on the first transmission shaft 22. The first drive member 21 is configured to drive the first transmission shaft 22 to rotate, thereby driving the drive wheel 1 to rotate.

[0046] The second drive assembly 3 is connected to the drive wheel 1 in a transmission manner, and the second drive assembly 3 is configured to drive the drive wheel 1 to move axially along the first transmission shaft 22.

[0047] Driven wheel 4 is located on the side of driving wheel 1. The first driving component 2 and / or the second driving component 3 can drive the driving wheel 1 to a position that forms a transmission engagement with the driven wheel 4. The transmission motion between the driving wheel 1 and the driven wheel 4 transmits the consumable 10.

[0048] In this application, the consumable transfer device, through the cooperation of the first drive assembly 2 and the second drive assembly 3, drives the drive wheel 1 to move or rotate along the first transmission shaft 22, and then cooperates with the driven wheel 4 to transfer the consumable 10, realizing the automatic conversion and extrusion of multiple consumables 10. This application provides a remote extrusion device for 3D printing with a high degree of automation and low installation accuracy requirements.

[0049] The second drive assembly 3 includes a second drive member 31, a second drive shaft 32, and a first sliding member 33. The second drive member 31 is drive-connected to the second drive shaft 32, and the second drive shaft 32 is drive-connected to the first sliding member 33. The second drive shaft 32 is arranged parallel to the first drive shaft 22. The first sliding member 33 is drive-connected to the drive wheel 1 to drive the drive wheel 1 to move axially along the first drive shaft 22.

[0050] Optionally, in some embodiments, the first sliding member 33 is in direct contact with the driving wheel 1, and the movement of the first sliding member 33 drives the driving wheel 1 to move through friction between the first sliding member 33 and the driving wheel 1. Specifically, the outer side of the first sliding member 33 is in contact with the driving wheel 1, and the first sliding member 33 drives the driving wheel 1 to move along the first transmission shaft 22 through friction between the first sliding member 33 and the driving wheel 1. The end of the second transmission shaft 32 away from the second driving member 31 is provided with a second limiting member to prevent the first sliding member 33 from disengaging. Alternatively, in another embodiment, an intermediate transmission member is provided between the first sliding member 33 and the driving wheel 1, and the movement of the first sliding member 33 drives the intermediate transmission member to move, and the intermediate transmission member drives the driving wheel 1 to move. The driven wheels 4 are arranged in a direction parallel to the axial direction of the first transmission shaft 22, and the extended length of the driven wheels 4 after arrangement is less than the length of the first transmission shaft 22.

[0051] The first rotating shaft 22 is a polygonal optical shaft. The polygonal cross-section of the first transmission shaft 22 improves the stability of the fit between the drive wheel 1 and the first transmission shaft 22. A certain gap between the first transmission shaft 22 and the drive wheel 1 does not affect their mutual fit and relative movement, thus reducing the installation accuracy between them. Optionally, the cross-sectional shape of the first transmission shaft 22 can be quadrilateral, pentagonal, hexagonal, floral, or irregular, as long as it allows the drive wheel 1 to move axially along the first transmission shaft 22 and rotate relative to it. The first transmission shaft 22 can be a cross shaft, a gear shaft, or a polygonal optical shaft with a cross-section of at least 3. Optionally, in some embodiments, the polygon is cross-shaped, that is, the first drive shaft 22 is a cross shaft. The selection of the structure of the first drive shaft 22 ensures that the drive wheel 1 is stably connected with the first drive shaft 22, effectively preventing the drive wheel 1 from rotating relative to each other. Since the edge features of the first drive shaft 22 are relatively obvious, slight wear between the first drive shaft 22 and the drive wheel 1 will not affect the performance of the device, reducing the installation accuracy of the consumable transmission device, ensuring that the first drive shaft 22 has a long service life, and reducing the replacement frequency of the first drive shaft 22.

[0052] In some embodiments, the driving wheel 1, the first sliding member 33, and the driven wheel 4 are all made of rubber material; the outer wall of the driving wheel 1 is provided with a protruding structure 11 to improve the stability of clamping the consumable 10 when the driving wheel 1 and the driven wheel 4 are in transmission engagement to extrude the consumable 10. Optionally, the protruding structure 11 is a toothed structure, that is, the driving wheel 1 is a gear made of rubber.

[0053] The consumable conveying device also includes a feed pipe 5 and a discharge pipe 6 that are arranged in a one-to-one correspondence. The consumable 10 is conveyed from the feed pipe 5 to the discharge pipe 6. The driven wheel 4 is located on the conveying path of the consumable 10.

[0054] When extruding consumables, consumables 10 enter through the feed pipe 5. The drive wheel 1 selectively moves to align with any one of the driven wheels 4 and drives the single consumable 10 to be transported to the discharge pipe 6. The consumable 10 is then extruded through the discharge pipe 6.

[0055] The arrangement and number of driven wheels 4 along the first transmission shaft 22 are not specifically limited, as long as the function of extruding and transporting a single consumable is achieved by the driving wheel 1 cooperating with only one driven wheel 4 for each movement.

[0056] Optionally, referring to Figure 1, in some embodiments, there are multiple driven wheels 4, which are arranged axially on one side of the first drive shaft 22. The extended length of the multiple driven wheels 4 after arrangement is less than the length of the first drive shaft 22. The specific number of driven wheels 4 can be set according to actual needs. Further, in some embodiments, the number of driven wheels 4 is 4; correspondingly, the number of feed pipes 5 and discharge pipes 6 is also 4.

[0057] Referring to Figure 2, in some embodiments, there are multiple driven wheels 4, which are axially arranged on opposite sides of the first drive shaft 22. The extended length of the driven wheels 4 arranged on both sides is less than the length of the first drive shaft 22, and the driven wheels 4 on both sides are staggered. Specifically, there are four driven wheels 4 on each side, staggered so that the driving wheel 1 corresponds to only one driven wheel 4 during the extrusion of consumable 10. The driven wheels are axially arranged on both sides of the first drive shaft 22, which makes full use of the structural space of the device and increases the number of consumable 10 that the consumable conveying device can convert for extrusion. Compared with placing the driven wheels on the same side of the first drive shaft, sufficient gaps are provided between the driven wheels on the same side of the first drive shaft, avoiding mutual interference between the driven wheels. Specifically, driven wheels 4 are evenly spaced on the first and second sides of the first transmission shaft 22, with the driven wheels 4 on the second side of the first transmission shaft 22 aligned with the driven wheels 4 on the first side. The presence of driven wheels 4 on both sides of the first transmission shaft 22 increases the number of consumables 10 that the consumable transmission device can transport.

[0058] Further, referring to Figures 3 and 4, in some embodiments, the consumable transport device of this application further includes a first transmission assembly 9. The first transmission assembly 9 includes a third transmission shaft 91 and a third driven wheel 92. The third transmission shaft 91 is arranged parallel to the first transmission shaft 22. The third driven wheel 92 is tractively connected to the third transmission shaft 91 and tractively connected between the driving wheel 1 and the driven wheel 4. The third driven wheel 92 and the driven wheel 4 cooperate to extrude the consumable 10. In use, the driving wheel 1 drives the third driven wheel 92 to rotate, and the third driven wheel 92 and the driven wheel 4 cooperate to transport the consumable 10, avoiding direct contact between the driving wheel 1 and the consumable 10. In some embodiments, the number of third driven wheels 92 is one. Each third driven wheel 92 is slidably connected to a third transmission shaft 91. The third driven wheel 92 is in contact with the driving wheel 1. When the driving wheel 1 moves axially along the first transmission shaft 22, it drives the third driven wheel 92 to move axially along the third transmission shaft 91. When the driving wheel 1 rotates, it drives the third driven wheel 92 to rotate. In another embodiment, the third driven wheel 92 is arranged in a one-to-one correspondence with the driven wheel 4. The third driven wheel 92 is rotatably fixed to the third transmission shaft 91. The driving wheel 1 moves to a position corresponding to the third driven wheel 92, contacts the third driven wheel 92, and drives the third driven wheel 92 to rotate. The third driven wheel 92 cooperates with the corresponding driven wheel 4 to extrude the consumable 10. The arrangement of multiple third driven wheels 92 avoids cross-contamination between consumables 10 of different colors through the transmission of the third driven wheels 92.

[0059] Furthermore, this application embodiment also provides a consumable printhead, which is connected to at least two consumable transport devices as described above; each consumable transport device includes a feed tube, and the consumable printhead is connected to the consumable transport device through the feed tube; optionally, the feed tube may be made of Teflon material.

[0060] Referring to Figure 5, the consumable printhead includes an extrusion mechanism 7 and a nozzle mechanism 8. The extrusion mechanism 7 is connected to at least two consumable transport devices, and receives consumables 10 transported by the consumable transport devices and selectively extrudes one of them. The nozzle mechanism 8 is configured to move and heat any one of the consumables 10 transported by the extrusion mechanism 7 to a molten state before ejecting it. In this application, the consumable printhead includes an extrusion mechanism 7 and a nozzle mechanism 8. The extrusion mechanism 7 is capable of transporting multi-color consumables, and the nozzle mechanism 8 melts and ejects the consumables transported by the extrusion mechanism 7 by moving back and forth. This allows the consumable printhead to achieve multi-color consumable conversion printing while simplifying the overall structure and operating principle of the printhead and reducing the assembly precision of the printhead.

[0061] The printhead mechanism 8 includes a third drive assembly 81 and a nozzle assembly 82. The third drive assembly 81 is configured to drive the nozzle assembly 82. The nozzle assembly 82 includes a first connector 821 disposed near the discharge port 72 and a nozzle 822 disposed on the first connector 821. The first connector 821 is driven by the third drive assembly 81. Under the drive of the third drive assembly 81, the nozzle assembly 82 of the consumable printhead enables the printing of multi-color consumables while sharing a single nozzle.

[0062] The extrusion mechanism 7 includes an extrusion assembly 71 and a feeding assembly 72; the extrusion assembly 71 includes a fifth drive shaft 711, a first drive wheel 712, a first driven wheel 713, and a second driven wheel 714. The first drive wheel 712 is sleeved on the fifth drive shaft 711, and the second driven wheel 714 is tractively connected between the first drive wheel 712 and the first driven wheel 713. The first drive wheel 712 is configured to rotate under the drive of the fifth drive shaft 711, thereby driving the second driven wheel 714 to rotate. The transmission motion between the second driven wheel 714 and the first driven wheel 713 transmits consumables.

[0063] The feeding assembly 72 includes a plurality of first discharge pipes 721 connected to the extrusion assembly 71 and a second connector 722 disposed at one end of the first discharge pipe 721 away from the extrusion assembly 71. The first connector 721 is slidably connected to the second connector 722. The second connector 722 has a discharge hole 723 communicating with the first discharge pipe 721. The nozzle 822 moves to the discharge hole 723 under the drive of the first connector 821 and then heats the consumables transmitted by the first discharge pipe 721 to a molten state and sprays them out.

[0064] The cooperation between the second connector 722 and the first connector 821 improves the stability of the movement of the first connector 821 and the accuracy of its alignment with the discharge hole 723. In use, the first connector 821 moves along the second connector 722 to drive the nozzle 822 to correspond with the discharge hole 723, melting and spraying out the consumables extruded by the extrusion mechanism 7.

[0065] The number of first discharge pipes 721 is the same as the number of consumable conveying devices connected to the extrusion mechanism 7, and the specific number can be set according to actual needs. In some embodiments, the number of consumable conveying devices connected to the extrusion mechanism 7 is 4, and the number of first discharge pipes 721 is 4.

[0066] The third drive assembly 81 includes a fourth drive shaft 811, a second sliding member 812, and a transmission member 813. The second sliding member 812 is sleeved on the fourth drive shaft 811. The two ends of the transmission member 813 are respectively connected to the fourth drive shaft 811 and the first connecting member 821. The two ends of the second sliding member 812 are respectively connected between the fifth drive shaft 711 and the fourth drive shaft 811. The first drive wheel 712 is also configured to move axially along the fifth drive shaft 711 under the drive of the second sliding member 812.

[0067] When printing consumables, the fourth drive shaft 811 rotates, driving the second sliding member 812 to move along the fourth drive shaft 811, which in turn drives the transmission member 813 connected to the second sliding member 812 to move in a direction parallel to the fourth drive shaft 811, driving the first connecting member 821 to move, so that the nozzle 822 communicates with any of the discharge holes 723; at the same time, the second sliding member 812 drives the first driving wheel 712 to move to a position where it is in transmission engagement with the second driven wheel 714, the fifth drive shaft 711 rotates, driving the first driving wheel 712 to rotate, the first driving wheel 712 and the second transmission wheel 714 are in transmission motion, the second transmission wheel 714 and the first transmission wheel 713 are in transmission engagement to extrude the consumables; the extruded consumables are transported from the discharge hole 723 to the nozzle 822 through the first discharge pipe 721, and the nozzle 822 heats the consumables to a molten state before spraying them out.

[0068] Furthermore, embodiments of this application provide a 3D printer, including the filament transport device and / or the filament printhead as described above.

[0069] When the 3D printer performs the printing process, the consumable transport device, as a remote consumable transport device, drives the drive wheel 1 to a position where it is engaged with the driven wheel 4 through the transmission of the first drive component 2 and / or the second drive component 3. The transmission motion between the drive wheel 1 and the driven wheel 4 transports the consumable 10, which is then transported to the consumable print head through the discharge pipe 6. After receiving the consumable 10 transported by the consumable transport device, the extrusion mechanism 7 of the consumable print head transports the consumable to the nozzle mechanism 8, which heats the consumable 10 to a molten state and then ejects it.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0071] The above embodiments merely illustrate preferred implementations of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A consumable transfer device, characterized by, include: A first drive assembly, the first drive assembly includes a first drive member and a first transmission shaft, the first drive member being drively connected to the first transmission shaft; A drive wheel is sleeved and mounted on the first drive shaft, and the first drive member is configured to drive the first drive shaft to rotate, thereby driving the drive wheel to rotate. A second drive assembly is connected to the drive wheel and is configured to drive the drive wheel to move axially along the first drive shaft. The driven wheel is located on the side of the driving wheel. The first drive assembly and / or the second drive assembly can drive the driving wheel to a position that forms a transmission engagement with the driven wheel. The transmission motion between the driving wheel and the driven wheel transmits consumables.

2. The consumable transfer device of claim 1, wherein: The second drive assembly includes a second drive member, a second transmission shaft, and a first sliding member. The second drive member is drivenly connected to the second transmission shaft, the second transmission shaft is drivenly connected to the first sliding member, the second transmission shaft is arranged parallel to the first transmission shaft, and the first sliding member is drivenly connected to the drive wheel. The second drive assembly is configured to drive the drive wheel to move axially along the first transmission shaft.

3. The consumable transfer device of claim 1, wherein: The first drive shaft is a light shaft with a polygonal cross-section.

4. The consumable transfer device of claim 2, wherein: The driving wheel, the first sliding member, and the driven wheel are all made of rubber material; the outer wall of the driving wheel is provided with a protruding structure.

5. The consumable transfer device of claim 2, wherein: The consumables conveying device also includes a feed pipe and a discharge pipe that are arranged in a one-to-one correspondence. The consumables are conveyed from the feed pipe to the discharge pipe, and the driven wheel is located on the conveying path of the consumables.

6. The consumable transfer device of claim 1, wherein: The number of driven wheels is multiple, and the multiple driven wheels are arranged axially on one side of the first drive shaft. The extended length of the multiple driven wheels after arrangement is less than the length of the first drive shaft.

7. The consumable transfer device of claim 1, wherein: The number of driven wheels is multiple, and the multiple driven wheels are arranged axially on opposite sides of the first transmission shaft. The extended length of the driven wheels on both sides after being arranged is less than the length of the first transmission shaft, and the driven wheels on both sides are staggered.

8. The consumable transfer device of claim 2, wherein: The consumables transmission device further includes a first transmission assembly, which includes a third transmission shaft arranged parallel to the first transmission shaft and a third driven wheel disposed on the third transmission shaft. The third driven wheel is tractively connected between the driving wheel and the driven wheel, and the third driven wheel cooperates with the driven wheel to transmit consumables.

9. A consumable printhead, characterized by: The consumable printhead is connected to at least two consumable delivery devices as described in any one of claims 1-8; the consumable printhead includes an extrusion mechanism and a nozzle mechanism; the extrusion mechanism is connected to at least two of the consumable delivery devices, the extrusion mechanism is configured to receive consumables delivered by the consumable delivery devices and selectively extrude one of them; the nozzle mechanism is configured to move and heat any one of the consumables delivered by the extrusion mechanism to a molten state before ejecting it.

10. The consumable print head of claim 9, wherein: The consumable transport device includes a first drive assembly, a drive wheel, a second drive assembly, and a driven wheel. The first drive assembly includes a first drive member and a first transmission shaft. The first drive member is driveably connected to the first transmission shaft, which is a polygonal optical axis. The drive wheel is mounted on the first transmission shaft, and the first drive member is configured to drive the first transmission shaft to rotate, thereby driving the drive wheel to rotate. The second drive assembly is driveably connected to the drive wheel and is configured to drive the drive wheel to move axially along the first transmission shaft. The driven wheel is located on the side of the drive wheel. The first drive assembly and / or the second drive assembly can drive the drive wheel to a position that forms a transmission engagement with the driven wheel. The drive wheel and the driven wheel transmit consumables through their transmission motion.

11. The consumable printhead of claim 10, wherein: The second drive assembly includes a second drive member, a second transmission shaft, and a first sliding member. The second drive member is drivenly connected to the second transmission shaft, the second transmission shaft is drivenly connected to the first sliding member, the second transmission shaft is arranged parallel to the first transmission shaft, and the first sliding member is drivenly connected to the drive wheel. The second drive assembly is configured to drive the drive wheel to move axially along the first transmission shaft.

12. The consumable printhead of claim 9, wherein: The first drive shaft is a light shaft with a polygonal cross-section.

13. The consumable printhead of claim 11, wherein: The driving wheel, the first sliding member, and the driven wheel are all made of rubber material; the outer wall of the driving wheel is provided with a protruding structure.

14. The consumable printhead according to claim 11, characterized in that: The consumables conveying device also includes a feed pipe and a discharge pipe that are arranged in a one-to-one correspondence. The consumables are conveyed from the feed pipe to the discharge pipe, and the driven wheel is located on the conveying path of the consumables.

15. The consumable printhead according to claim 9, characterized in that: The number of driven wheels is multiple, and the multiple driven wheels are arranged axially on one side of the first drive shaft. The extended length of the multiple driven wheels after arrangement is less than the length of the first drive shaft.

16. The consumable printhead according to claim 9, characterized in that: The number of driven wheels is multiple, and the multiple driven wheels are arranged axially on opposite sides of the first transmission shaft. The extended length of the driven wheels on both sides after being arranged is less than the length of the first transmission shaft, and the driven wheels on both sides are staggered.

17. The consumable printhead according to claim 10, characterized in that: The consumables transmission device further includes a first transmission assembly, which includes a third transmission shaft arranged parallel to the first transmission shaft and a third driven wheel disposed on the third transmission shaft. The third driven wheel is tractively connected between the driving wheel and the driven wheel, and the third driven wheel cooperates with the driven wheel to transmit consumables.

18. The consumable printhead according to claim 9, characterized in that: The extrusion mechanism includes an extrusion assembly and a feeding assembly; the nozzle mechanism includes a third drive assembly and a nozzle assembly driven by the third drive assembly; the nozzle assembly includes a first connector and a nozzle, the first connector is configured to cooperate with the feeding assembly, the nozzle is disposed on the first connector, and the first connector is driven by the third drive assembly.

19. The consumable printhead according to claim 18, characterized in that: The third drive assembly includes a fourth drive shaft, a second sliding member, and a transmission member. The second sliding member is sleeved on the fourth drive shaft, and the two ends of the transmission member are respectively connected to the fourth drive shaft and the first connecting member.

20. A 3D printer, characterized in that: Includes the consumable delivery device as described in any one of claims 1-8 and / or the consumable printhead as described in any one of claims 9-19.

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