Consumable conveying and switching assembly and 3D printer

Abstract

The utility model discloses a consumable conveying and switching assembly and a 3D printer, and relates to the technical field of 3D printing. The consumable conveying and switching assembly comprises a consumable selecting device, a driving device, a transmission device, a first consumable concentrator and a second consumable concentrator. The consumable selection device comprises a plurality of consumable selection mechanisms, each consumable selection mechanism comprises a shell and a switching piece, and the switching pieces are movably assembled in the shells. Under the driving of the driving device, the transmission device drives the switching piece to swing, different consumables are guided into different channels under the condition of multiple consumables, the different consumables can be conveyed in the consumable selection mechanism at the same time, and then the consumables are output from the first consumable concentrator or the second consumable concentrator to complete switching of the consumables. The 3D printer comprises the consumable conveying and switching assembly and the remote extrusion feeding device. By the adoption of the technical scheme, compared with a traditional material changing mode, the material changing device has the advantages that material changing time is saved, and conveying work of multiple consumables is completed at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a consumable material transmission switching component and a 3D printer. Background Art

[0002] 3D printers, also known as three-dimensional printers, are a type of machine that uses cumulative manufacturing technology, that is, rapid prototyping technology. They are widely used in manufacturing, medical, automotive and other fields. Current 3D printers support printing with a variety of consumables, but when switching consumables, the original consumables need to be unloaded onto the tray, and then a new tray is assembled, and the new consumables are loaded from the new tray. This process not only requires a long waiting time for material change due to the long pipeline transmission line and the reheating of the nozzle, but also requires the current printing job to be suspended before changing materials. It is impossible to transmit multiple consumables at the same time, which affects the smoothness of the printing job, and may affect the quality and appearance of the product. Utility Model Content

[0003] The purpose of the utility model is to provide a consumable material transmission switching component and a 3D printer in view of the defects and shortcomings of the prior art, which have the advantage of convenient switching of consumable materials.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a consumable material transmission switching component, comprising:

[0005] A consumable material selection device, the consumable material selection device includes a plurality of consumable material selection mechanisms, the consumable material selection mechanisms include: a shell, and a switching member movably assembled in the shell; the shell has a first channel and a second channel inside, and the shell is provided with: a feed port connected to the same end of the first channel and the second channel, a first discharge port connected to the other end of the first channel, and a second discharge port connected to the other end of the second channel; the switching member has two position states, when in the first position state, the first channel connects the feed port and the first discharge port, and the switching member cuts off the connection between the second channel and the feed port, and when in the second position state, the second channel connects the feed port and the second discharge port, and the switching member cuts off the connection between the first channel and the feed port;

[0006] Drive device;

[0007] Transmission device; the transmission device is arranged between the switching member and the driving device, and is used to drive the switching member to be in a first position state or a second position state under the drive of the driving device;

[0008] A first consumable hub, wherein the first consumable hub is provided with: a plurality of first consumable hub feed ports respectively corresponding to the plurality of first discharge ports, a first consumable hub discharge port, and a plurality of first consumable hub channels, one end of each of which is connected to the first consumable hub feed ports and the other end of each of which is connected to the first consumable hub discharge port; and

[0009] The second consumable hub is provided with: a plurality of second consumable hub feed ports respectively corresponding to the plurality of second discharge ports, a second consumable hub discharge port, and a plurality of second consumable hub channels respectively connected to the second consumable hub feed ports at one end and converging at the second consumable hub discharge port at the other end.

[0010] The utility model is further arranged that the switching member includes: a guide head rotatably assembled in the shell, and a guide head driving handle connected to the guide head, exposed from the shell, and used to cooperate with the transmission device; the transmission device drives the guide head driving handle and then drives the guide head to swing, so that the guide head is in the first position state or the second position state.

[0011] The utility model is further arranged that the switching member also includes: an elastic connecting member assembled in the shell and connected between the guide head and the guide head driving handle.

[0012] The utility model is further configured that one end of the guide head facing the feed port is configured as a tip, one side of the tip facing the first channel is configured as a first guide slope, and one side of the tip facing the second channel is configured as a second guide slope;

[0013] When the switching member is in a first position, the first guide slope guides the consumable material from the feed port into the first channel; when the switching member is in a second position, the second guide slope guides the consumable material from the feed port into the second channel.

[0014] The utility model further arranges that the multiple consumable selection mechanisms are arranged side by side so that the multiple feed ports are in the same plane, the multiple first discharge ports are in the same plane, and the multiple second discharge ports are in the same plane; the multiple consumable selection mechanisms are connected by fasteners.

[0015] The utility model is further arranged that a plurality of the guide head driving handles are arranged side by side, and the transmission device has a switching swing shaft passing through the plurality of the guide head driving handles. Under the drive of the driving device, the switching swing shaft drives the plurality of the guide head driving handles and further drives the plurality of the guide heads to swing.

[0016] The utility model is further arranged that a mounting seat for mounting the driving device is fixedly assembled on the side of the consumable selection device; the transmission device also includes: a switching swing arm having one end fixedly connected to the switching swing shaft, and a coupling connected between the output shaft of the driving device and the switching swing arm; an avoidance hole for avoiding the switching swing arm is opened on the mounting seat.

[0017] The utility model is further configured that the first consumable hub outlet and the second consumable hub outlet are respectively connected to conduits, and the other ends of the two conduits are connected to the same print head through a Y-shaped tube.

[0018] The utility model is further configured that the first consumable hub outlet and the second consumable hub outlet are respectively connected to conduits, and the other ends of the two conduits are respectively connected to a print head.

[0019] To achieve the above-mentioned purpose, another technical solution adopted by the utility model is: a 3D printer, comprising: the consumable transmission switching component as described above, and a remote extrusion feeding device connected to the feed port through a feeding pipe and used for loading and supplying consumables.

[0020] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: in the utility model, the consumable selection device includes multiple consumable selection mechanisms. Under the drive of the driving device, the transmission device drives the switching parts in the consumable selection mechanism to switch different position states. In the case of multiple consumables, two of the consumables are respectively guided into the first channel and the second channel, and are respectively output from the first consumable hub outlet of the first consumable hub and the second consumable hub outlet of the second consumable hub, thereby realizing the rapid preparation of the two consumables; and after one of the consumables is printed, the third consumable can be supplemented and prepared when the second consumable is printed, and can be on standby at any time, which greatly shortens the material replacement time and realizes continuous printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the structure of a consumables transport switching assembly with a single print head;

[0023] Figure 2 It is a schematic diagram of the structure explosion of the consumables transmission switching component;

[0024] Figure 3 This is a structural exploded diagram of the consumables transmission switching component from another perspective;

[0025] Figure 4 It is a schematic diagram of the structure of the consumables selection mechanism;

[0026] Figure 5 This is the exploded diagram of the structure of the first consumable hub

[0027] Figure 6 It is a schematic diagram of the structure of the driving device, the transmission device and the consumable material selection device;

[0028] Figure 7 It is a schematic diagram of the exploded structure of the drive device and the transmission device;

[0029] Figure 8 It is a structural schematic diagram of a consumables transport switching assembly with dual print heads;

[0030] Fig. 9 It is a schematic diagram of the structure of a consumable transport switching component with a single print head connected to a remote extrusion feeding device.

[0031] Description of reference numerals:

[0032] 100, consumable material selection device; 110, consumable material selection mechanism; 111, housing; 1111, rotating column; 112, switching member; 1121, guide head; 1121a, first guide slope; 1121b, second guide slope; 1122, guide head driving handle; 1123, elastic connecting member; 111a, first channel; 111b, second channel; 111c, feed port; 111d, first discharge port; 111e, second discharge port; 120, mounting seat; 130, support member; 140, extension plate;

[0033] 200, driving device;

[0034] 300, transmission device; 310, switching swing shaft; 320, switching swing arm; 330, coupling;

[0035] 400, first consumable hub; 400a, first consumable hub feed port; 400b, first consumable hub discharge port; 400c, first consumable hub channel;

[0036] 500, second consumable hub; 500a, second consumable hub feed port; 500b, second consumable hub discharge port;

[0037] 600, catheter; 700, Y-shaped tube; 800, print head; 900, print extrusion mechanism; 1000, feed tube; 1100, remote extrusion feed device. DETAILED DESCRIPTION

[0038] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0040] This embodiment relates to a consumable material transmission switching component, referring to Figure 1-Figure 3 , including a consumables selection device 100, a driving device 200, a transmission device 300, a first consumables hub 400 and a second consumables hub 500.

[0041] Among them, refer to Figure 1-Figure 4 The consumable material selection device 100 includes a plurality of consumable material selection mechanisms 110. In this embodiment, the consumable material selection device 100 having four consumable material selection mechanisms 110 is taken as an example. The consumable material selection mechanism 110 includes: a shell 111 and a switching member 112 movably assembled in the shell 111. The shell 111 has a first channel 111a and a second channel 111b inside; the shell 111 is provided with: a feed port 111c connected to the same end of the first channel 111a and the second channel 111b, a first discharge port 111d connected to the other end of the first channel 111a, and a second discharge port 111e connected to the other end of the second channel 111b. The switching member 112 has two position states. When in the first position state, the first channel 111a connects the feed port 111c and the first discharge port 111d, and the switching member 112 cuts off the connection between the second channel 111b and the feed port 111c. When in the second position state, the second channel 111b connects the feed port 111c and the second discharge port 111e, and the switching member 112 cuts off the connection between the first channel 111a and the feed port 111c.

[0042] Reference Figure 1-Figure 3 ,and Figure 6 The transmission device 300 is disposed between the switching member 112 and the driving device 200 , and is used to drive the switching member 112 to be in the first position state or the second position state under the drive of the driving device 200 .

[0043] Reference Figure 1-Figure 3 ,and Figure 5The first consumable hub 400 is provided with: a plurality of first consumable hub feed ports 400a corresponding to the plurality of first discharge ports 111d, a first consumable hub discharge port 400b, and a plurality of first consumable hub channels 400c each having one end connected to the first consumable hub feed ports 400a and the other end converging to the first consumable hub discharge port 400b. The second consumable hub 500 is provided with: a plurality of second consumable hub feed ports 500a corresponding to the plurality of second discharge ports 111e, a second consumable hub discharge port 500b, and a plurality of second consumable hub channels (not shown) each having one end connected to the second consumable hub feed ports 500a and the other end converging to the second consumable hub discharge port 500b.

[0044] By providing a plurality of consumable material selection mechanisms 110 and two consumable material hubs, and each consumable material selection mechanism 110 has two channels and a switching member 112, when there are multiple consumable materials, two of the consumable materials can be respectively guided into the first channel 111a and the second channel 111b, and respectively output from the first consumable material hub outlet 400b of the first consumable material hub 400 and the second consumable material hub outlet 500b of the second consumable material hub 500, thereby realizing rapid preparation of the two consumable materials. When the first consumable material is used for printing, the second consumable material is waiting; when the first consumable material is printed, the second consumable material is immediately used for printing, and at the same time, the third consumable material enters the consumable hub where the original first consumable material is located to wait, which greatly shortens the material replacement time and realizes continuous printing of multiple consumable materials.

[0045] In this embodiment, refer to Figure 4 and Figure 6 The switching member 112 includes: a guide head 1121 rotatably assembled in the housing 111, and a guide head driving handle 1122 connected to the guide head 1121, exposed from the housing 111, and used to cooperate with the transmission device 300. During operation, the transmission device 300 drives the guide head driving handle 1122 and then drives the guide head 1121 to swing, so that the guide head 1121 is in the first position state or the second position state, and then controls the consumables to enter the first channel 111a or the second channel 111b after entering from the feed port 111c, and then enter the first consumable hub 400 or the second consumable hub 500 through the first discharge port 111d or the second discharge port 111e.

[0046] As a preferred solution, refer to Figure 4 A rotating column 1111 is extended inside the housing 111, and the guide head 1121 is rotatably sleeved on the rotating column 1111. The rotating column 1111 plays the role of installing and limiting the guide head 1121, and also serves as the rotation axis of the guide head 1121.

[0047] Continue to refer to Figure 4 In some embodiments, the switching member 112 further includes: an elastic connecting member 1123 assembled in the housing 111 and connected between the guide head 1121 and the guide head driving handle 1122. Taking one of the consumables selection mechanisms 110 as an example, when the switching member 112 is in a position state, the consumables enter one of the channels. At this time, if the driving device 200 drives the transmission device 300 to drive the switching member 112 to change position, since the consumables are still continuously entering the channel, there is a squeezing force on the guide head 1121. Since the guide head 1121 and the guide head driving handle 1122 are connected by the elastic connecting member 1123, only the guide head driving handle 1122 is driven, and the guide head 1121 does not swing, and does not affect the consumables passing through. When no more consumables enter the consumables selection mechanism 110, if the driving device 200 drives the transmission device 300 to drive the switching member 112 to change position, the guide head 1121 will swing and change to another position state. The setting of the elastic connector 1123 plays an important role in driving the guide head driving handle 1122 to move at the same time with the transmission device 300. The guide head 1121 in the consumable selection mechanism 110 that is still transmitting consumables will not change its position state, and will not affect the continued transmission of the consumables passing through; the guide head 1121 in the consumable selection mechanism 110 that is not transmitting consumables will change its position state, and then can enter the opposite consumable hub. In this embodiment, the elastic connector 1123 is made of elastic material and is bent into a plurality of compact wave shapes.

[0048] In some embodiments, reference Figure 4 , the end of the guide head 1121 facing the feed port 111c is set as a tip; the side of the tip facing the first channel 111a is set as a first guide slope 1121a, and the side of the tip facing the second channel 111b is set as a second guide slope 1121b. When the switching member 112 is in the first position, the tip presses against the entrance of the second channel 111b, and the first guide slope 1121a guides the consumables from the feed port 111c into the first channel 111a; when the switching member 112 is in the second position, the tip presses against the entrance of the first channel 111a, and the second guide slope 1121b guides the consumables from the feed port 111c into the second channel 111b.

[0049] In this embodiment, referring to the figure, a plurality of consumable selection mechanisms 110 are arranged side by side so that a plurality of feed ports 111c are in the same plane, a plurality of first discharge ports 111d are in the same plane, and a plurality of second discharge ports 111e are in the same plane. This arrangement makes the entire consumable selection device 100 more compact and smaller in size; secondly, it makes the feed pipe 1000 connected to the feed port 111c more orderly, and the first consumable hub 400 and the second consumable hub 500 are also easier to install. These consumable selection mechanisms 110 are connected by fasteners, which are not limited here, and the fasteners can be bolts, etc.

[0050] In this embodiment, refer to Figure 1-Figure 3 ,and Figure 6-Figure 7 , multiple guide head driving handles 1122 are arranged side by side. The transmission device 300 has a switching swing shaft 310 that passes through the multiple guide head driving handles 1122. Under the drive of the driving device 200, the switching swing shaft 310 drives the multiple guide head driving handles 1122 and then drives the multiple guide heads 1121 to swing. Compared with multiple switching members 112 being driven by different transmission devices 300 respectively, the multiple switching members 112 are driven by a switching swing shaft 310 to move, which simplifies the structure, is easier to control, and saves costs. This setting plays an important role in conjunction with the above-mentioned elastic connecting member 1123.

[0051] Reference Figure 1-Figure 3 ,and Figure 6-Figure 7 , a mounting seat 120 for mounting the drive device 200 is fixedly mounted on the side of the consumable selection device 100. In this embodiment, the transmission device 300 also includes: a switching swing arm 320 with one end fixedly connected to the switching swing shaft 310, and a coupling 330 connected between the output shaft of the drive device 200 and the switching swing arm 320. An avoidance hole for avoiding the switching swing arm 320 is provided on the mounting seat 120. In this embodiment, the drive device 200 is a steering gear. The steering gear is a position (angle) servo drive, which is suitable for control systems that require angles to be constantly changed and can be maintained. The output shaft of the steering gear drives the switching swing arm 320 to rotate through the coupling 330, and the switching swing arm 320 then drives the switching swing shaft 310 thereon to swing, thereby driving the multiple guide head driving handles 1122 to move.

[0052] Continue to refer to Figure 1-Figure 3 ,and Figure 6-Figure 7In this embodiment, a support member 130 is fixedly connected between the first consumable hub 400 and the second consumable hub 500, one side of the support member 130 is fixedly connected to the mounting seat 120, and the other side of the support member 130 is extended with an extension plate 140 wrapped around the other side of the consumable selection device 100. The mounting seat 120, the support member 130 and the extension plate 140 cooperate to make the entire consumable transmission switching assembly more stable, and can also wrap the guide head driving handle 1122 exposed from the housing 111, effectively protecting the entire switching member 112.

[0053] The consumable material transfer switching assembly is applicable to both single print head 800 and dual print head 800.

[0054] In one embodiment, referring to Figure 1-Figure 7 The first consumable hub outlet 400b and the second consumable hub outlet 500b are respectively connected to a conduit 600, and the other ends of the two conduits 600 are connected to the same print head 800 through a Y-shaped tube 700. A printing extrusion mechanism 900 is provided between the print head 800 and the Y-shaped tube 700.

[0055] Let's take a specific example to illustrate:

[0056] Preparation: The red consumable corresponds to the No. 1 consumable selection mechanism 110 , the green consumable corresponds to the No. 2 consumable selection mechanism 110 , the blue consumable corresponds to the No. 3 consumable selection mechanism 110 , and the purple consumable corresponds to the No. 4 consumable selection mechanism 110 .

[0057] Step 1: The steering gear drives all guide head driving handles 1122 to move by switching the swing shaft 310, thereby driving all guide heads 1121 to be in the first position state.

[0058] Step 2: Under the action of the remote extrusion feeding device 1100, the red consumable enters the first consumable hub 400 from the feed port 111c of the No. 1 consumable selection mechanism 110 through its first channel 111a, and continues to enter the print head 800 through the conduit 600 connected to the first consumable hub 400 for printing;

[0059] Step 3: The servo drives all guide head driving handles 1122 to move by switching the swing shaft 310, thereby driving the remaining guide heads 1121 except the No. 1 consumable selection mechanism 110 to be in the second position state (the elastic connecting member 1123 ensures that the guide head 1121 in the No. 1 consumable selection mechanism 110 that is still transmitting consumables does not change its position state).

[0060] Step 4: Under the action of the remote extrusion feeding device 1100, the green consumable enters the second consumable hub 500 from the feed port 111c of the second consumable selection mechanism 110 through the second channel 111b thereof, and remains in the conduit 600 connected to the second consumable hub 500 to wait;

[0061] Step 5: After the red consumable is printed, the red consumable is withdrawn into the conduit 600 connected to the first consumable hub 400, and the green consumable enters the print head 800 for printing. The red consumable is withdrawn into the feed tube 1000 under the action of the remote extrusion feeding device 1100, and at the same time, the steering gear drives all guide head driving handles 1122 to move by switching the swing shaft 310, thereby driving the remaining guide heads 1121 except the No. 2 consumable selection mechanism 110 to be in the first position state;

[0062] Step 6: Under the action of the remote extrusion feeding device 1100, the blue consumable enters the first consumable hub 400 from the feed port 111c of the No. 3 consumable selection mechanism 110 through its first channel 111a, and remains in the conduit 600 connected to the first consumable hub 400 to wait;

[0063] Step 7: After the green consumable is printed, the blue consumable enters the print head 800 for printing, and the cycle continues.

[0064] In multi-consumables printing, the traditional material changing method is optimized to achieve continuous material changing printing, which greatly shortens the material changing time.

[0065] In one embodiment, referring to Figure 8 The first consumable hub outlet 400b and the second consumable hub outlet 500b are respectively connected to a conduit 600, and the other ends of the two conduits 600 are respectively connected to a print head 800. A printing extrusion mechanism 900 is arranged between the print head 800 and the conduit 600.

[0066] Let's take a specific example to illustrate:

[0067] Preparation: The red consumable corresponds to the No. 1 consumable selection mechanism 110 , the green consumable corresponds to the No. 2 consumable selection mechanism 110 , the blue consumable corresponds to the No. 3 consumable selection mechanism 110 , and the purple consumable corresponds to the No. 4 consumable selection mechanism 110 .

[0068] Step 1: The steering gear drives all guide head driving handles 1122 to move by switching the swing shaft 310, thereby driving all guide heads 1121 to be in the first position state.

[0069] Step 2: Under the action of the remote extrusion feeding device 1100, the red consumable enters the first consumable hub 400 from the feed port 111c of the first consumable selection mechanism 110 through its first channel 111a, and continues to enter the first print head through the conduit 600 connected to the first consumable hub 400 for printing;

[0070] Step 3: The servo drives all guide head driving handles 1122 to move by switching the swing shaft 310, thereby driving the remaining guide heads 1121 except the No. 1 consumable selection mechanism 110 to be in the second position state (the elastic connecting member 1123 ensures that the guide head 1121 in the No. 1 consumable selection mechanism 110 that is still transmitting consumables does not change its position state).

[0071] Step 4: Under the action of the remote extrusion feeding device 1100, the green consumable enters the second consumable hub 500 from the feed port 111c of the second consumable selection mechanism 110 through its second channel 111b, and continues to enter the second print head through the conduit 600 connected to the second consumable hub 500, waiting for printing;

[0072] Step 5: After the red consumable is printed, the red consumable is withdrawn into the conduit 600 connected to the first consumable hub 400, and the second print head 800 performs printing. The red consumable is withdrawn into the feeding tube 1000 under the action of the remote extrusion feeding device 1100, and at the same time, the steering gear drives all the guide head driving handles 1122 to move by switching the swing shaft 310, thereby driving the remaining guide heads 1121 except the second consumable selection mechanism 110 to be in the first position state;

[0073] Step 6: Under the action of the remote extrusion feeding device 1100, the blue consumable enters the first consumable hub 400 from the feed port 111c of the third consumable selection mechanism 110 through its first channel 111a, and continues to enter the first print head through the conduit 600 connected to the first consumable hub 400, waiting for printing;

[0074] Step 7: After the green consumables are printed, print head 1 will start printing, and the cycle will continue.

[0075] Traditional dual-nozzle printers can only print two types of consumables, but this solution can provide dual-nozzle printers with multi-material consumables. Compared with single-nozzle printers, dual-nozzle printers can switch between multiple materials without stopping printing (one nozzle prints, the other changes materials, and works continuously without interruption).

[0076] This embodiment also relates to a 3D printer, referring to Fig. 9, including: the consumable material transmission switching assembly as described above, and a remote extrusion feeding device 1100 connected to the feed port 111c through a feeding pipe 1000, used for loading and supplying consumable materials. In some embodiments, the remote extrusion feeding device 1100 is designed to control the extrusion, withdrawal and rewinding of the consumable material through a single motor in the remote extrusion feeding device 1100, which can not only complete the normal consumable material conveying and retracting work of the remote extrusion feeding device 1100, but also rewind the consumable material onto the material tray when retracting the consumable material, thereby avoiding the accumulation of the consumable material at the feed port when retracting the consumable material, affecting the printing work. In some embodiments, the remote extrusion feeding device 1100 is provided with multiple, respectively connected to the corresponding feeding pipes 1000 to convey consumables, and can convey a variety of different consumables at the same time, and then switch the consumables in the consumable material transmission switching assembly. When the consumable material completes the printing work, the consumable material is retracted and rewound onto the material tray by using its corresponding remote extrusion feeding device 1100. The remote extrusion feeding device 1100 and the consumable transmission switching component are combined to realize the simultaneous transmission of multiple consumables, and can rewind the consumables to avoid accumulation of consumables after they are withdrawn.

[0077] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A consumable material transmission switching component, characterized in that: include: A consumable material selection device (100), the consumable material selection device (100) comprising a plurality of consumable material selection mechanisms (110), the consumable material selection mechanisms (110) comprising: a shell (111), and a switching member (112) movably mounted in the shell (111); the shell (111) has a first channel (111a) and a second channel (111b) inside, the shell (111) is provided with: a feed port (111c) connecting the first channel (111a) and the second channel (111b) at the same end, a first discharge port (111d) connecting the other end of the first channel (111a), and a discharge port (111d) connecting the second channel (111b) b) a second discharge port (111e) at the other end; the switching member (112) has two position states, when in the first position state, the first channel (111a) is connected to the feed port (111c) and the first discharge port (111d), and the switching member (112) cuts off the connection between the second channel (111b) and the feed port (111c); when in the second position state, the second channel (111b) is connected to the feed port (111c) and the second discharge port (111e), and the switching member (112) cuts off the connection between the first channel (111a) and the feed port (111c); A driving device (200); a transmission device (300); the transmission device (300) is arranged between the switching member (112) and the driving device (200), and is used to drive the switching member (112) to be in a first position state or a second position state under the drive of the driving device (200); A first consumables hub (400), the first consumables hub (400) being provided with: a plurality of first consumables hub feed ports (400a) respectively corresponding to the plurality of first discharge ports (111d), a first consumables hub discharge port (400b), and a plurality of first consumables hub channels (400c) each having one end connected to the first consumables hub feed ports (400a) and the other end converging to the first consumables hub discharge port (400b); as well as A second consumables hub (500), the second consumables hub (500) is provided with: a plurality of second consumables hub feed ports (500a) respectively corresponding to the plurality of second discharge ports (111e), a second consumables hub discharge port (500b), and a plurality of second consumables hub channels, one end of each of which is connected to the second consumables hub feed port (500a) and the other end of each of which is connected to the second consumables hub discharge port (500b).

2. The consumable material transmission switching assembly according to claim 1, characterized in that: The switching member (112) comprises: a guide head (1121) rotatably assembled in the shell (111), and a guide head driving handle (1122) connected to the guide head (1121), exposed from the shell (111), and used to cooperate with the transmission device (300); the transmission device (300) drives the guide head driving handle (1122) and further drives the guide head (1121) to swing, so that the guide head (1121) is in the first position state or the second position state.

3. The consumable material transmission switching assembly according to claim 2, characterized in that: The switching member (112) further comprises: an elastic connecting member (1123) which is assembled in the housing (111) and connected between the guide head (1121) and the guide head driving handle (1122).

4. The consumable material transmission switching assembly according to claim 2, characterized in that: One end of the guide head (1121) facing the feed port (111c) is configured as a tip, a side of the tip facing the first channel (111a) is configured as a first guide slope (1121a), and a side of the tip facing the second channel (111b) is configured as a second guide slope (1121b); When the switching member (112) is in a first position state, the first guiding inclined surface (1121a) guides the consumable material from the feed port (111c) into the first channel (111a); when the switching member (112) is in a second position state, the second guiding inclined surface (1121b) guides the consumable material from the feed port (111c) into the second channel (111b).

5. The consumable material transmission switching assembly according to claim 3, characterized in that: The plurality of consumable material selection mechanisms (110) are arranged side by side so that the plurality of feed ports (111c) are located in the same plane, the plurality of first discharge ports (111d) are located in the same plane, and the plurality of second discharge ports (111e) are located in the same plane; and the plurality of consumable material selection mechanisms (110) are connected via fasteners.

6. The consumable material transmission switching assembly according to claim 5, characterized in that: The plurality of guide head driving handles (1122) are arranged side by side, and the transmission device (300) has a switching swing shaft (310) passing through the plurality of guide head driving handles (1122). Under the drive of the driving device (200), the switching swing shaft (310) drives the plurality of guide head driving handles (1122) and further drives the plurality of guide heads (1121) to swing.

7. The consumable material transmission switching assembly according to claim 6, characterized in that: A mounting seat (120) for mounting the drive device (200) is fixedly mounted on the side of the consumable material selection device (100); the transmission device (300) further comprises: a switching swing arm (320) having one end fixedly connected to the switching swing shaft (310), and a coupling (330) connected between the output shaft of the drive device (200) and the switching swing arm (320); and an avoidance hole for avoiding the switching swing arm (320) is provided on the mounting seat (120).

8. The consumable material transmission switching assembly according to any one of claims 1 to 7, characterized in that: The first consumable hub outlet (400b) and the second consumable hub outlet (500b) are respectively connected to conduits (600), and the other ends of the two conduits (600) are connected to the same print head (800) via a Y-shaped tube (700).

9. The consumable material transmission switching assembly according to any one of claims 1 to 7, characterized in that: The first consumable hub outlet (400b) and the second consumable hub outlet (500b) are respectively connected to a conduit (600), and the other ends of the two consumable hubs are respectively connected to a print head (800).

10. A 3D printer, characterized in that: include: A consumable material transmission switching assembly as described in any one of claims 1 to 9, and a remote extrusion feeding device (1100) connected to the feed port (111c) via a feeding pipe (1000) and used for loading and supplying consumable materials.

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