3D printer material changing mechanism and 3D printer

Abstract

The utility model discloses a 3D printer material changing mechanism and a 3D printer. The 3D printer material changing mechanism comprises a first driving device, a feeding mechanism, a feeding driven assembly, a material selecting mechanism, a first transmission assembly, a feeding linkage mechanism, a second driving device and a consumable material winding roller mechanism which are connected according to a set connection relation. The number of the feeding driven assemblies is multiple, consumables can be arranged between the feeding mechanism and each feeding driven assembly, and therefore multiple types of consumables can be selected for printing. By means of the material changing mechanism of the 3D printer, required consumables can be selected and conveyed to the spray head to be printed. According to the material changing mechanism of the 3D printer, consumables can be flexibly changed and selected for printing, and diversified printing requirements of people can be met. The utility model can be used for a single-nozzle 3D printer to print multi-color consumables, or for a single-nozzle 3D printer to print consumables made of various different materials.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, specifically relating to a 3D printer material changing mechanism and a 3D printer. Background Technology

[0002] With the advancement of science and technology, 3D printing technology has flourished, presenting a vibrant and diverse landscape. 3D printers are widely used across various industries and fields, with FDM (Fused Deposition Modeling) technology finding applications not only in industrial production but also in everyday life. A large number of 3D printer enthusiasts have emerged in this field, with desktop FDM 3D printers being particularly popular. Desktop FDM 3D printers excel at printing parts and models, demonstrating good performance even with complex models and figurines. As the number of printing enthusiasts grows, so do people's printing needs. The demand for printing models in multiple colors, using combinations of different colors or materials is increasing, and ordinary monochrome or two-color 3D printers can no longer meet these needs. Currently, there is a lack of reliable and durable 3D printer filament changing mechanisms to flexibly switch filaments and meet diverse printing requirements. There is also a lack of 3D printers with innovative filament changing mechanisms to facilitate model printing.

[0003] Therefore, a new technology is needed to address the lack of a novel material changing mechanism for 3D printers in existing technologies; a new technology is needed to address the lack of "a 3D printer with a novel material changing mechanism" in existing technologies. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a reliable and durable 3D printer material changing mechanism that allows for flexible material selection during printing, meeting diverse printing needs.

[0005] The present invention adopts the following technical solution:

[0006] A 3D printer material changing mechanism includes a first drive device, a feeding mechanism, a feeding driven component, a material selection mechanism, a first transmission component, a feeding linkage mechanism, a second drive device, and a consumable roll mechanism.

[0007] The first driving device is connected to a first predetermined position of the feeding mechanism and is used to drive the feeding mechanism to rotate.

[0008] The second predetermined position of the feeding mechanism is connected to the feeding linkage mechanism through the first transmission component;

[0009] The second driving device is connected to the material selection mechanism and is used to drive the material selection mechanism to move;

[0010] The feeding follower assembly is provided in several groups, and the several groups of feeding follower assemblies are respectively located next to the feeding mechanism and the material selection mechanism;

[0011] After the material selection mechanism is activated, it can act on the feeding driven component at a set position, driving the feeding driven component to approach the feeding mechanism for clamping consumables; wherein, while the feeding driven component is approaching the feeding mechanism, it can connect the feeding linkage mechanism with the consumable roll mechanism.

[0012] The consumable roll mechanism is connected to the consumable roll drive; wherein, the consumable roll is used to carry consumables; after the consumables are drawn out from the consumable roll, they can be initially positioned between the feeding mechanism and several sets of the feeding driven components; the consumables are clamped and conveyed in a timely manner by the feeding mechanism and the feeding driven components at the set position.

[0013] Furthermore, it also includes a housing; the first driving device, the feeding mechanism, the feeding driven component, the material selection mechanism, the feeding linkage mechanism, the second driving device, and the consumable roll mechanism are respectively disposed at predetermined positions on the housing.

[0014] Furthermore, the feeding mechanism includes a first rotating shaft, feeding wheels, and a first bearing; a plurality of feeding wheels are provided, and the plurality of feeding wheels are arranged on the first rotating shaft at a set interval; a first end of the first rotating shaft is connected to the first driving device; a second end of the first rotating shaft is connected to the feeding linkage mechanism through the first transmission assembly; a plurality of the first bearings are provided on the first rotating shaft, and the first rotating shaft is arranged at a set position on the housing through the plurality of the first bearings.

[0015] Furthermore, each set of the feeding driven components includes a consumable channel component, an elastic deformable component, a rocker arm bracket, a feeding driven wheel, and a transmission wheel; the feeding driven wheel is located at a first predetermined position on the rocker arm bracket; the transmission wheel is located at a second predetermined position on the rocker arm bracket; the rocker arm bracket is rotatably mounted on the consumable channel component via the elastic deformable component; the consumable channel component has a feeding channel for consumables to pass through; the consumable channel component can be mounted on the housing, and after being mounted, a predetermined adjustable clamping gap is maintained between the feeding driven wheel and the feeding wheel.

[0016] Furthermore, each of the feeding follower components is also equipped with a detection device, which is used to detect whether the consumable has passed through the feeding wheel or the feeding channel.

[0017] Furthermore, the material selection mechanism includes a movable abutment component and a position adjustment component; the movable abutment component is movably mounted on the position adjustment component; the position adjustment component is connected to the second driving device and can be driven by the second driving device, thereby driving the movable abutment component to move along the guide direction; wherein, after the movable abutment component moves, it can press against the rocker arm bracket at a set position, reducing the clamping gap, so as to clamp the consumable with the feeding driven wheel.

[0018] Furthermore, the feeding linkage mechanism includes a second rotating shaft and linkage wheels; a plurality of linkage wheels are provided; the plurality of linkage wheels are disposed on the second rotating shaft at a set interval; the second rotating shaft is rotatably disposed at a set position on the housing; the second end of the first rotating shaft is connected to one end of the second rotating shaft through the first transmission assembly;

[0019] The consumable roll mechanism includes a third rotating shaft and rolls; a plurality of rolls are provided; the plurality of rolls are rotatably mounted on the third rotating shaft at a set interval; the third rotating shaft is located at a set position on the housing; the rolls can be connected to the transmission part of the consumable roll.

[0020] The linkage wheel is connected to the winding roller via the transmission wheel in a timely manner, thereby driving the consumable roll to rotate.

[0021] Furthermore, the first transmission component is one of a synchronous pulley belt assembly, a coupling assembly, or a gear assembly.

[0022] Another objective of this invention is to provide a 3D printer that facilitates the printing of models and meets diverse printing needs.

[0023] A 3D printer includes a nozzle, a branch convergence channel, a filament roll, and a 3D printer material changing mechanism; the branch convergence channel includes a main channel and several branch channels; one end of each of the several branch channels is connected to the feed channel of the filament channel component of the feeding follower assembly at a predetermined position, and the other end of each branch channel is connected to the main channel; the front end of the main channel is connected to the printing channel of the nozzle; the filament on the filament roll can be guided into the feed channel of the filament channel component of the feeding follower assembly.

[0024] Furthermore, the 3D printer also includes a control device; the first drive device and the second drive device are respectively connected to the control device.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] This invention relates to a 3D printer material changing mechanism, which allows for flexible selection of consumables for printing, meeting diverse printing needs. This invention can be used in single-nozzle 3D printers to print multi-color consumables, or in single-nozzle 3D printers to print various consumables of different materials. This utility model has several sets of feeding follower components. Consumables can be placed between the feeding mechanism and each set of feeding follower components, allowing the 3D printer's material changing mechanism to simultaneously accommodate many types of consumables (such as consumables of different colors or materials). Through this 3D printer's material changing mechanism, users can select the desired consumable from a variety of materials and transport it to the nozzle for printing. Specifically, this utility model uses a material selection mechanism to press against the feeding follower components at a set position, thereby clamping the target consumable. Then, the feeding mechanism, in conjunction with the feeding follower components, transports the consumable. Simultaneously, the feeding linkage mechanism, through the feeding follower components and the consumable roll mechanism, rotates, causing the consumable roll to rotate with the feeding mechanism, thus achieving efficient consumable transport, such as consumable feeding or unloading.

[0027] This utility model discloses a 3D printer with a novel material changing mechanism, which can facilitate the printing of models in different styles and meet people's diverse printing needs. Attached Figure Description

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0029] Figure 1 This is a schematic diagram showing the arrangement of the filament changing mechanism and the filament roll in a 3D printer. Figure 1 (The shell cover is not shown);

[0030] Figure 2 yes Figure 1 A 3D diagram showing the consumable rolls and outer boxes after removal;

[0031] Figure 3 yes Figure 2 The diagram shows the positions and connections of the "first drive device, feeding mechanism, feeding driven component, material selection mechanism, first transmission component, feeding linkage mechanism, second drive device, and consumable roller mechanism".

[0032] Figure 4 yes Figure 3 A magnified view of the area at point B;

[0033] Figure 5 yes Figure 3 A three-dimensional diagram from another perspective;

[0034] Figure 6 yes Figure 3 A three-dimensional schematic diagram of the central feeding mechanism;

[0035] Figure 7 yes Figure 3 A three-dimensional schematic diagram (also a schematic diagram of the connection relationship) of the first drive device, the feeding mechanism and the feeding linkage mechanism;

[0036] Figure 8 yes Figure 3 A three-dimensional schematic diagram of the central feeding mechanism and a set of feeding driven components;

[0037] Figure 9 yes Figure 8 A three-dimensional diagram from another perspective;

[0038] Figure 10 yes Figure 9 A magnified view of point C;

[0039] Figure 11 yes Figure 3 A three-dimensional schematic diagram of the material selection mechanism;

[0040] Figure 12 The movable contact component has not yet pressed against the rocker arm bracket. (Diagram showing the positional relationship between the feeding driven wheel, transmission wheel, and other components.) Figure 12 (This can represent the relationship between the main components of the 3D printer's material changing mechanism in the non-feeding state);

[0041] Figure 13 yes Figure 12 Diagram showing the positional relationship between the movable contact assembly, the rocker arm support, the feeding driven wheel, the transmission wheel, and other components. Figure 13 This can represent the connection relationship between the main components of the 3D printer's material changing mechanism in the feeding state.

[0042] Figure label:

[0043] 1-3D printer material changing mechanism; 11-First drive device; 12-Feeding mechanism; 13-Feed driven component; 14-Material selection mechanism; 15-First transmission component; 16-Feeding linkage mechanism; 17-Second drive device; 18-Consumable roll mechanism; 19-Consumable roll; 20-Consumable; 21-Housing; 22-Transmission part; 23-First rotating shaft; 24-Feeding wheel; 25-First bearing; 26-First motor; 27-Second transmission component; 28-Consumable channel component; 29-Elastic deformation component; 30-Tilt rod bracket; 31-Feed driven wheel; 32-Transmission wheel; 33-Feeding channel; 34-Clamping gap; 35-First rotating shaft; 36-Second rotating shaft; 37-Third rotating shaft; 38-Torsion spring; 39-Detection device; 40-Consumable output connector; 41-Modular component 42-Position Adjustment Component; A-Guide Direction; 43-Second Motor; 44-Third Transmission Component; 45-Sliding Part; 46-Abutting Part; 47-Lead Screw; 48-Optical Axis; 49-First Through Hole; 50-Second Through Hole; 51-Second Bearing; 52-Bearing; 53-Protrusion; 54-Second Rotating Shaft; 55-Linkage Wheel; 56-Third Rotating Shaft; 57-Roller; 58-Fourth Bearing; 59-First Synchronous Pulley; 60-First Annular Synchronous Belt; 61-Second Synchronous Pulley; 62-Third Synchronous Pulley; 63-Second Annular Synchronous Belt; 64-Fourth Synchronous Pulley; 65-Fifth Synchronous Pulley; 66-Third Annular Synchronous Belt; 67-Sixth Synchronous Pulley; 68-Outer Box; 69-Inner Box; 70-Feed Hole; B-Partial Enlarged Icon; C-Partial Enlarged Icon. Detailed Implementation

[0044] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0045] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0046] Reference Figures 1 to 13 A 3D printer material changing mechanism 1 includes a first drive device 11, a feeding mechanism 12, a feeding driven component 13, a material selection mechanism 14, a first transmission component 15, a feeding linkage mechanism 16, a second drive device 17, and a consumable roll mechanism 18.

[0047] The first driving device 11 is connected to the first set position of the feeding mechanism 12 and is used to drive the feeding mechanism 12 to rotate;

[0048] The second set position of the feeding mechanism 12 is connected to the feeding linkage mechanism 16 through the first transmission component 15;

[0049] The second driving device 17 is connected to the material selection mechanism 14 and is used to drive the material selection mechanism 14 to move;

[0050] The feeding follower assembly 13 is provided in several groups, which can be used to cooperate with the material selection mechanism 14 to select the consumable 20; the several groups of the feeding follower assembly 13 are respectively arranged next to the feeding mechanism 12 and the material selection mechanism 14;

[0051] After the material selection mechanism 14 is activated, it can act on the feeding driven component 13 at a set position, driving the feeding driven component 13 to approach the feeding mechanism 12 for clamping the consumable 20; wherein, while the feeding driven component 13 is approaching the feeding mechanism 12, it can drive the feeding linkage mechanism 16 to the consumable rolling roller mechanism 18.

[0052] The consumable roll mechanism 18 is connected to the consumable roll 19 for transmission; wherein, the consumable roll 19 is used to carry the consumable 20; after the consumable 20 is led out from the consumable roll 19, it can be initially positioned between the feeding mechanism 12 and several sets of feeding driven components 13; the consumable 20 is clamped and conveyed in a timely manner by the feeding mechanism 12 and the feeding driven components 13 at the set position, and finally the consumable 20 is conveyed forward into the nozzle of the 3D printer.

[0053] Reference Figures 1 to 13 In one embodiment, the 3D printer material changing mechanism 1 further includes a housing 21; the first drive device 11, the feeding mechanism 12, the feeding follower component 13, the material selection mechanism 14, the feeding linkage mechanism 16, the second drive device 17, and the consumable roll mechanism 18 are respectively disposed at a set position on the housing 21.

[0054] In one embodiment, the 3D printer material changing mechanism 1 further includes a cover ( Figure 1 (Not shown); the cover can be placed on the housing 21 to protect the structure installed in the housing 21, such as the consumable roll 19 and other structures.

[0055] Reference Figures 1 to 13In one embodiment, the feeding mechanism 12 includes a first rotating shaft 23, feeding wheels 24, and first bearings 25. Several feeding wheels 24 are provided, and these wheels are positioned at a predetermined interval on the first rotating shaft 23. A first end of the first rotating shaft 23 is connected to the first driving device 11. A second end of the first rotating shaft 23 is connected to the feeding linkage mechanism 16 via the first transmission assembly 15. Several first bearings 25 are provided on the first rotating shaft 23, and the first rotating shaft 23 is positioned at a predetermined position on the housing 21 via these bearings. The feeding wheels 24 rotate with the first rotating shaft 23, driving the clamped consumable 20 forward or backward. At least two feeding wheels 24 are provided.

[0056] In one embodiment, the feed wheel 24 is a metal wheel with small teeth or textures, or the feed wheel 24 is a plastic wheel with small teeth or textures; the feed wheel 24 has a shaft hole, and the feed wheel 24 engages with the hole of the first rotating shaft 23 through its own shaft hole. In another embodiment, the feed wheel 24 is a cylindrical cam, which is integrally machined with the first rotating shaft 23, and the cylindrical cam is coaxial with the first rotating shaft 23.

[0057] Reference Figures 1 to 13 In one embodiment, the first drive device 11 includes a first motor 26 and a second transmission assembly 27, wherein the output shaft of the first motor 26 is connected to the first rotating shaft 23 via the second transmission assembly 27. This first drive device 11 can increase power for feeding or unloading materials.

[0058] Reference Figures 1 to 13 In one embodiment, each set of the feeding driven assembly 13 includes a consumable channel component 28, an elastic deformable component 29, a rocker arm bracket 30, a feeding driven wheel 31, and a transmission wheel 32. The feeding driven wheel 31 is located at a first predetermined position on the rocker arm bracket 30; the transmission wheel 32 is located at a second predetermined position on the rocker arm bracket 30; the rocker arm bracket 30 is rotatably mounted on the consumable channel component 28 via the elastic deformable component 29; the consumable channel component 28 has a feeding channel 33 for the consumable 20 to pass through; the consumable channel component 28 can be mounted on the housing 21, and after mounting, a predetermined adjustable clamping gap 34 is maintained between the feeding driven wheel 31 and the feeding wheel 24. The initial clamping gap 34 is relatively large, larger than the diameter of the consumable 20, so the consumable 20 will not be clamped when passing through the initial clamping gap 34, thus preventing the consumable 20 from being fed or ejected.

[0059] In one embodiment, the elastic deformable element 29 is one of a torsion spring, a compression spring, or a tension spring. The presence of the elastic deformable element 29 allows the rocker arm bracket 30 to return to its initial position after losing the pressing action of the movable abutment component 41 of the material selection mechanism 14, thereby restoring the initial clamping gap 34 between the feeding driven wheel 31 and the feeding wheel 24. (Refer to...) Figures 1 to 13 In this embodiment, the elastic deformation member 29 is a torsion spring 38; the rocker arm bracket 30 is rotatably mounted on the consumable channel member 28 via the torsion spring 38.

[0060] Reference Figures 1 to 13 In one embodiment, each set of the feeding driven assembly 13 further includes a first rotating shaft 35, a second rotating shaft 36, and a third rotating shaft 37; the first rotating shaft 35 connects the rocker arm bracket 30 and the torsion spring 38 in series, and the rocker arm bracket 30 is rotatably and reversibly mounted on the consumable channel component 28 via the first rotating shaft 35 and the torsion spring 38; the two legs of the torsion spring 38 maintain a set opening angle, one leg is connected to the consumable channel component 28, and the other leg is connected to the rocker arm bracket 30; the feeding driven wheel 31 is rotatably mounted on the rocker arm bracket via the second rotating shaft 36. The transmission wheel 32 is rotatably mounted on the rocker arm bracket 30 via the third rotating shaft 37. Through the torsion spring 38, the rocker arm bracket 30 can be flexibly rocked. Therefore, when the feeding driven wheel 31 approaches the feeding wheel 24, the transmission wheel 32 can also approach the linkage wheel 55 of the feeding linkage mechanism 16 and the roller 57 of the consumable roll mechanism 18. Conversely, when the feeding driven wheel 31 moves away from the feeding wheel 24, the transmission wheel 32 can also move away from the linkage wheel 55 of the feeding linkage mechanism 16 and the roller 57 of the consumable roll mechanism 18. The linkage wheel 55 is connected to the roller 57 of the consumable roll mechanism 18 via the transmission wheel 32, thereby driving the consumable roll 19 to rotate, realizing the release or recycling of consumable 20 by the consumable roll 19.

[0061] In one embodiment, the feeding follower assembly 13 is used to select the printing consumable 20, clamp the selected consumable 20 between the feeding follower wheel 31 and the feeding wheel 24, and with the drive of the first drive device 11, the feeding wheel 24 rotates, and finally feeds the consumable 20 forward into the nozzle of the 3D printer.

[0062] Reference Figures 1 to 13 In one embodiment, each set of the feeding follower components 13 is further provided with a detection device 39; the consumable channel component 28 is provided with the detection device 39, and the detection device 39 is used to detect whether the consumable 20 passes through the feeding wheel 24 or the feeding channel 33.

[0063] In one embodiment, the detection device 39 is one of an optocoupler switch, a displacement sensor, a micro switch, and a Hall sensor. (Refer to...) Figures 1 to 13 In this embodiment, the detection device 39 is an optocoupler switch.

[0064] Reference Figures 1 to 13 In one embodiment, each set of the feeding follower components 13 further includes a consumable outlet connector 40; the consumable outlet connector 40 is disposed on the consumable channel component 28, and the consumable outlet connector 40 is connected to the feeding channel 33; the consumable outlet connector 40 can be connected to the branch channel ("branch channel" mentioned below) of the 3D printer.

[0065] Reference Figures 1 to 13 In one embodiment, the material selection mechanism 14 includes a movable abutment component 41 and a position adjustment component 42. The movable abutment component 41 is movably mounted on the position adjustment component 42. The position adjustment component 42 is connected to the second driving device 17 and can be driven by the second driving device 17, thereby causing the movable abutment component 41 to move along the guide direction A. After the movable abutment component 41 moves, it can press against the rocker arm bracket 30 at a set position, reducing the clamping gap 34, so that the feeding driven wheel 31 clamps the consumable 20. The movable abutment component 41, together with the feeding driven component 13 at the set position, can select the consumable to be printed.

[0066] Reference Figures 1 to 13 In one embodiment, the second drive device 17 includes a second motor 43 and a third transmission assembly 44; the output shaft of the second motor 43 is connected to the position adjustment assembly 42 through the third transmission assembly 44.

[0067] Reference Figures 1 to 13 In this embodiment, the movable abutment component 41 includes a slider 45 and an abutment component 46; the position adjustment component 42 includes a lead screw 47 and an optical axis 48; the abutment component 46 is disposed on the slider 45 and is used to abut against the rocker arm bracket 30; the slider 45 has a first through hole 49 and a second through hole 50; the first through hole 49 is slidably connected to the lead screw 47 (e.g., threaded connection); the second through hole 50 is connected to the optical axis 48 (e.g., smooth connection).

[0068] Reference Figures 1 to 13 In this embodiment, the position adjustment assembly 42 further includes a second bearing 51; the lead screw 47 is rotatably fixed to a set position on the housing 21 via the second bearing 51; and the optical axis 48 is (directly) fixed to a set position on the housing 21.

[0069] In another embodiment, the movable abutment component includes a sliding block and an abutment block; the abutment block is disposed on the sliding block and is used to press against the rocker arm bracket; the position adjustment component includes a slider guide rail and a transport belt; the sliding block is disposed on the slider guide rail and the transport belt, and the second driving device can drive the sliding block to move along the guiding direction of the slider guide rail by driving the transport belt, thereby realizing that the abutment block presses against the rocker arm bracket at a set position.

[0070] The transmission method by which the movable abutment component is displaced according to this invention includes, but is not limited to, screw drive or "slider guide rail + transport belt" drive.

[0071] Reference Figures 1 to 13 In one embodiment, the abutment 46 can be a bearing 52 or an arc-shaped protrusion on the sliding member 45. Correspondingly, to better enable the rocker arm bracket 30 to receive the pressure of the abutment 46, a protrusion 53 is provided at a corresponding position on the rocker arm bracket 30.

[0072] In one embodiment, the movable abutment component 41 moves to just abut the protrusion 53 of the rocker arm bracket 30. It can precisely control the operation of the second drive device 17 (such as a stepper motor) through the 3D printer's control program, thereby precisely controlling the rotation of the lead screw 47, and thus precisely controlling the movement distance of the slider 45 on the lead screw 47, thereby precisely controlling the stopping position of the slider 45. In another embodiment, the movable abutment component 41 moves to just abut the protrusion 53 of the rocker arm bracket 30 by utilizing the detection function of a sensor switch to accurately stop the slider 45. For example, a sensor switch is installed on the rocker arm bracket 30. When the slider 45 moves to just abut the abutment component 46 against the target protrusion 53, the sensor switch generates detection information and feeds it back to the 3D printer's control device ("control device" mentioned below). After judgment and analysis, the control device accurately shuts off the operation of the second drive device 17 to precisely stop the slider 45 at the target position. The sensor switch and the control device are connected by wire or wireless means.

[0073] Reference Figures 1 to 13 In one embodiment, the feeding linkage mechanism 16 includes a second rotating shaft 54 ​​and linkage wheels 55; a plurality of linkage wheels 55 are provided; the plurality of linkage wheels 55 are disposed on the second rotating shaft 54 ​​at a set interval, and the linkage wheels 55 rotate together with the second rotating shaft 54; the second rotating shaft 54 ​​is rotatably disposed at a set position on the housing 21; the second end of the first rotating shaft 23 is connected to one end of the second rotating shaft 54 ​​through the first transmission assembly 15;

[0074] The consumable roll mechanism 18 includes a third rotating shaft 56 and rolls 57; a plurality of rolls 57 are provided; the plurality of rolls 57 are rotatably mounted on the third rotating shaft 56 at a set interval; the third rotating shaft 56 is located at a set position on the housing 21; the rolls 57 can be connected to the transmission part 22 of the consumable roll 19.

[0075] The linkage wheel 55 is connected to the roller 57 via the transmission wheel 32 in a timely manner, thereby driving the consumable roll 19 to rotate.

[0076] In one embodiment, the feeding linkage mechanism 16 further includes a plurality of third bearings; the plurality of third bearings are disposed on the second rotating shaft 54 ​​at a set interval; the second rotating shaft 54 ​​is rotatably fixed at a set position on the housing 21 by the plurality of third bearings;

[0077] Reference Figures 1 to 13 In one embodiment, the consumable roller mechanism 18 further includes a plurality of fourth bearings 58; the plurality of fourth bearings 58 are disposed on the third rotating shaft 56 at a set interval; the third rotating shaft 56 is fixed at a set position on the housing 21 by the plurality of fourth bearings 58 (wherein, after the third rotating shaft 56 is fixed on the housing 1, it will not rotate itself, but the roller 57 can rotate on the third rotating shaft 56).

[0078] In one embodiment, the first transmission component 15 is one of a synchronous pulley belt assembly, a coupling assembly, and a gear assembly; the second transmission component 27 is one of a synchronous pulley belt assembly, a coupling assembly, and a gear assembly; and the third transmission component 44 is one of a synchronous pulley belt assembly, a coupling assembly, and a gear assembly.

[0079] Reference Figures 1 to 13 In this embodiment, the first transmission component 15 is a synchronous pulley belt assembly, which includes a first synchronous pulley 59, a first annular synchronous belt 60, and a second synchronous pulley 61. The first synchronous pulley 59 is located at the second end of the first rotating shaft 23; the second synchronous pulley 61 is located at one end of the second rotating shaft 54; the first annular synchronous belt 60 connects the first synchronous pulley 59 and the second synchronous pulley 61. The second synchronous pulley 61 has a different number of teeth than the first synchronous pulley 59; the number of teeth on the second synchronous pulley 61 is greater than that on the first synchronous pulley 59. This design is used to achieve transmission speed reduction. The first transmission component 15 can drive the second rotating shaft 54 ​​and the linkage wheel 55 to rotate, which in turn drives the roller 57 to rotate via the transmission wheel 32. The roller 57 then drives the consumable roll 19 to rotate, thereby enabling the release or recycling of consumables from the consumable roll 19.

[0080] Reference Figures 1 to 13 In this embodiment, the second transmission component 27 is a synchronous pulley belt assembly, which includes a third synchronous pulley 62, a second annular synchronous belt 63, and a fourth synchronous pulley 64; the third synchronous pulley 62 is located on the output shaft of the first motor 26; the fourth synchronous pulley 64 is located at the first end of the first rotating shaft 23; the second annular synchronous belt 63 connects the third synchronous pulley 62 and the fourth synchronous pulley 64.

[0081] Reference Figures 1 to 13 In this embodiment, the third transmission component 44 is a synchronous pulley belt assembly, which includes a fifth synchronous pulley 65, a third annular synchronous belt 66, and a sixth synchronous pulley 67; the fifth synchronous pulley 65 is disposed on the transmission shaft of the second motor 43; the sixth synchronous pulley 67 is disposed on one end of the lead screw 47; and the third annular synchronous belt 66 connects the fifth synchronous pulley 65 and the sixth synchronous pulley 67.

[0082] Another objective of this invention is to provide a 3D printer that facilitates the printing of models and meets diverse printing needs.

[0083] Reference Figures 1 to 13 A 3D printer includes a nozzle, a branch convergence channel, a filament roll 19, and a 3D printer material changing mechanism 1. The branch convergence channel includes a main channel and several branch channels. One end of each branch channel is connected to the feed channel 33 of the filament channel component 28 of the feed follower assembly 13 at a predetermined position, and the other end of each branch channel is connected to the main channel. The front end of the main channel is connected to the printing channel of the nozzle. The filament 20 on the filament roll 19 can be guided into the feed channel 33 of the filament channel component 28 of the feed follower assembly 13. In one embodiment, the filament 20 is a filament filament with a circular cross-section.

[0084] In one embodiment, the branch convergence channel is a five-way pipe.

[0085] Reference Figure 1 In one embodiment, there are several consumable rolls 19; each of the several consumable rolls 19 carries consumables 20; each of the several consumable rolls 19 is rotatably disposed in the housing 21; the transmission parts 22 of each of the several consumable rolls 19 are respectively connected to the corresponding rollers 57; according to actual needs, consumables 20 of different colors or different materials can be carried by the corresponding consumable rolls 19.

[0086] In one embodiment, the 3D printer further includes a control device (such as a controller); the first drive device 11, the second drive device 17, the detection device 39, and the sensor switch are respectively connected to the control device. The control device can issue control commands.

[0087] Reference Figures 1 to 13 In one embodiment, the housing 21 includes an outer box 68 and an inner box 69, with the outer box 68 mounted on the inner box 69. The first driving device 11, the feeding mechanism 12, the feeding driven component 13, the material selection mechanism 14, the feeding linkage mechanism 16, the second driving device 17, the consumable roll mechanism 18, the consumable roll 19, and the control device are respectively disposed at predetermined positions on the inner box 69. The outer box 68 is provided with a plurality of feeding holes 70. The plurality of feeding holes 70 correspond to the clamping gap 34 respectively. The consumable 20 on the consumable roll 19 is introduced into the clamping gap 34 and the feeding channel 33 through the feeding holes 70. The detection device 39 on the consumable channel component 28 can detect whether the consumable 20 has passed through the feeding wheel 24 or the feeding channel 33, and is used to determine whether the consumable 20 at each point is ready. If the detection device 39 detects that the consumable 20 is ready, it can perform the corresponding feeding or unloading action. If the detection device 39 does not detect that the consumable 20 has passed through the feeding wheel 24 or the feeding channel 33, it will feed the signal back to the control device, and the first drive device 11 will not work or will pause its current work, so that the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 will not rotate. At the same time, the linkage wheel 55, the transmission wheel 32, the roller 57, and the corresponding transmission part 22 will not rotate.

[0088] Another objective of this invention is to provide a working method for a 3D printer material changing mechanism, so as to scientifically guide people in using the new 3D printer material changing mechanism and improve the service life and safety of the new 3D printer material changing mechanism.

[0089] Reference Figures 1 to 13 A working method for a 3D printer material changing mechanism, which is based on the 3D printer material changing mechanism 1, characterized in that the working method is one or more of "a first working method, a second working method, a third working method, and a fourth working method";

[0090] The first working method is a working method under the "no feeding instruction state", which includes the following working steps:

[0091] SA1. In the absence of a feeding instruction, the movable abutment component 41 of the material selection mechanism 14 stops at the set initial position, and at the initial position, the movable abutment component 41 moves away from the feeding driven component 13.

[0092] The second working method is the working method under the "feeding instruction state", which includes the following working steps:

[0093] In SB1, under the feeding command state, the control device of the 3D printer issues a feeding command, the second drive device 17 is activated, and the movable abutment component 41 on the material selection mechanism 14 moves to the feeding driven component 13 corresponding to the command. The movable abutment component 41 presses against the rocker arm bracket 30 of the feeding driven component 13, so that the feeding driven wheel 31 of the feeding driven component 13 moves closer to the feeding wheel 24 of the feeding mechanism 12, so that the clamping gap 34 becomes smaller, thereby clamping the consumable 20 between the feeding driven wheel 31 and the feeding wheel 24.

[0094] Once the state of the movable abutment component 41 accurately pressing against the rocker arm bracket 30 is confirmed, the second drive device 17 stops moving, while the first drive device 11 starts, driving the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 to rotate, and then the consumable 20 is conveyed (feeding or unloading) under the action of the feeding wheel 24 and the feeding driven wheel 31.

[0095] The third working method is the working method under the "material change command state", which includes the following working steps:

[0096] SC1. When printing another type of consumable after the current printing is completed, under the material change command state, the second drive device 17 switches from the off state to the start state, driving the movable abutment component 41 on the material selection mechanism 14 to move to the next set of feeding driven components 13, pressing against the rocker arm bracket 30 of the feeding driven component 13, so that the consumable 20 between the feeding driven wheel 31 and the feeding wheel 24 is clamped.

[0097] Once the state of the movable contact component 41 accurately pressing against the rocker arm bracket 30 is confirmed, the second drive device 17 stops moving, while the first drive device 11 starts, driving the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 to rotate, and then the consumable 20 is conveyed under the action of the feeding wheel 24 and the feeding driven wheel 31 (it can feed or unload).

[0098] The fourth working method is a working method in the state of "all printing instructions have ended", which includes the following working steps:

[0099] SD1. When all printing commands have ended, the first drive device 11 drives the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 to rotate, and then the last printed consumable 20 is returned to the set position and shut off. The second drive device 17 drives the movable abutment component 41 on the material selection mechanism 14 to stop in the initial position.

[0100] When the 3D printer material changing mechanism operates in one of the following ways: "first working method, second working method, third working method, or fourth working method", the 3D printer material changing mechanism will operate in one of these ways.

[0101] When the 3D printer's material changing mechanism operates using multiple methods, such as "first working method, second working method, third working method, and fourth working method," the 3D printer's material changing mechanism will execute the first working method, second working method, third working method, and fourth working method in an orderly manner. For example, when the 3D printer's material changing mechanism is working, it will first execute the first working method, then the second working method, then the third working method, and finally the fourth working method.

[0102] The material changing mechanism for a 3D printer described in this utility model and other aspects of the 3D printer are described in the prior art and will not be repeated here.

[0103] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A material changing mechanism for a 3D printer, characterized in that, It includes a first drive device, a feeding mechanism, a feeding driven component, a material selection mechanism, a first transmission component, a feeding linkage mechanism, a second drive device, and a consumable roll mechanism; The first driving device is connected to a first predetermined position of the feeding mechanism and is used to drive the feeding mechanism to rotate. The second predetermined position of the feeding mechanism is connected to the feeding linkage mechanism through the first transmission component; The second driving device is connected to the material selection mechanism and is used to drive the material selection mechanism to move; The feeding follower assembly is provided in several groups, and the several groups of feeding follower assemblies are respectively located next to the feeding mechanism and the material selection mechanism; After the material selection mechanism is activated, it can act on the feeding driven component at a set position, driving the feeding driven component to approach the feeding mechanism for clamping consumables; wherein, while the feeding driven component is approaching the feeding mechanism, it can connect the feeding linkage mechanism with the consumable roll mechanism. The consumable roll mechanism is connected to the consumable roll drive; wherein, the consumable roll is used to carry consumables; after the consumables are drawn out from the consumable roll, they can be initially positioned between the feeding mechanism and several sets of the feeding driven components; the consumables are clamped and conveyed in a timely manner by the feeding mechanism and the feeding driven components at the set position.

2. The 3D printer material changing mechanism according to claim 1, characterized in that, It also includes a housing; the first driving device, the feeding mechanism, the feeding driven component, the material selection mechanism, the feeding linkage mechanism, the second driving device, and the consumable roll mechanism are respectively disposed at a set position on the housing.

3. The 3D printer material changing mechanism according to claim 2, characterized in that, The feeding mechanism includes a first rotating shaft, feeding wheels, and a first bearing; a plurality of feeding wheels are provided, and the plurality of feeding wheels are arranged on the first rotating shaft at a set interval; a first end of the first rotating shaft is connected to the first driving device; a second end of the first rotating shaft is connected to the feeding linkage mechanism through the first transmission assembly; a plurality of the first bearings are provided on the first rotating shaft, and the first rotating shaft is arranged at a set position on the housing through the plurality of the first bearings.

4. The 3D printer material changing mechanism according to claim 3, characterized in that, Each set of the feeding driven components includes a consumable channel component, an elastic deformable component, a rocker arm bracket, a feeding driven wheel, and a transmission wheel; the feeding driven wheel is located at a first predetermined position on the rocker arm bracket; the transmission wheel is located at a second predetermined position on the rocker arm bracket; the rocker arm bracket is rotatably mounted on the consumable channel component via the elastic deformable component; the consumable channel component has a feeding channel for consumables to pass through; the consumable channel component can be mounted on the housing, and after being mounted, a predetermined adjustable clamping gap is maintained between the feeding driven wheel and the feeding wheel.

5. The 3D printer material changing mechanism according to claim 4, characterized in that, Each set of the feeding follower components is also equipped with a detection device, which is used to detect whether the consumables have passed through the feeding wheel or the feeding channel.

6. The 3D printer material changing mechanism according to claim 5, characterized in that, The material selection mechanism includes a movable abutment component and a position adjustment component; the movable abutment component is movably mounted on the position adjustment component; the position adjustment component is connected to the second driving device and can be driven by the second driving device, thereby driving the movable abutment component to move along the guide direction; wherein, after the movable abutment component moves, it can press against the rocker arm bracket at a set position, reducing the clamping gap, so as to make the feeding driven wheel clamp the consumable.

7. The 3D printer material changing mechanism according to claim 6, characterized in that, The feeding linkage mechanism includes a second rotating shaft and linkage wheels; there are several linkage wheels; the several linkage wheels are arranged on the second rotating shaft at a set interval; the second rotating shaft is rotatably arranged at a set position on the housing; the second end of the first rotating shaft is connected to one end of the second rotating shaft through the first transmission assembly; The consumable roll mechanism includes a third rotating shaft and rolls; a plurality of rolls are provided; the plurality of rolls are rotatably mounted on the third rotating shaft at a set interval; the third rotating shaft is located at a set position on the housing; the rolls can be connected to the transmission part of the consumable roll. The linkage wheel is connected to the winding roller via the transmission wheel in a timely manner, thereby driving the consumable roll to rotate.

8. The 3D printer material changing mechanism according to any one of claims 1 to 7, characterized in that, The first transmission component is one of a synchronous pulley belt assembly, a coupling assembly, or a gear assembly.

9. A 3D printer, characterized in that, The invention includes a nozzle, a branch convergence channel, a filament roll, and a 3D printer material changing mechanism as described in any one of claims 1 to 8; the branch convergence channel includes a main channel and several branch channels; one end of each of the several branch channels is connected to the feed channel of the filament channel component of the feeding follower assembly at a set position, and the other end of each branch channel is connected to the main channel; the front end of the main channel is connected to the printing channel of the nozzle; the filament on the filament roll can be guided into the feed channel of the filament channel component of the feeding follower assembly.

10. The 3D printer according to claim 9, characterized in that, The 3D printer also includes a control device; the first drive device and the second drive device are respectively connected to the control device.

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