3D printer material changing mechanism, 3D printer and working method

Abstract

The invention discloses a 3D printer reloading mechanism, a 3D printer and a working method. The 3D printer reloading mechanism comprises a first driving device, a feeding mechanism, a feeding driven assembly, a sorting mechanism, a first transmission assembly, a feeding linkage mechanism, a second driving device and a consumable 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, needed 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 the diversified printing requirements of people can be met. The method can be used for a single-nozzle 3D printer to print multi-color consumables or used for the single-nozzle 3D printer to print multiple consumables made of different materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing, and in particular relates to a 3D printer material changing mechanism, a 3D printer and a working method. Background Art

[0002] With the development of science and technology, 3D printing technology has shown a pattern of flourishing and contending. 3D printers are widely used in various industries and fields. Among them, FDM (fused deposition modeling) molding technology is not only used in industrial production, but also appears in daily study and life. A large number of 3D printer enthusiasts have emerged in daily study and life, among which desktop FDM molding technology 3D printers are highly respected by printer enthusiasts. Desktop FDM molding technology 3D printers can excellently complete the printing of part models, and also have good printing performance for complex models, figurines, etc. With more and more printing enthusiasts, people's printing needs are becoming more and more abundant. The demand for "printing models in multiple colors" or "printing models with a combination of multiple colors of consumables" or "printing models with a combination of consumables of multiple different materials" is increasing. Ordinary monochrome 3D printers or two-color printers can no longer meet printing needs. At present, there is a lack of a reliable and durable 3D printer material changing mechanism to flexibly change consumables for printing and meet people's diverse printing needs. At present, there is a lack of a 3D printer with a new 3D printer material changing mechanism to facilitate people to print models. At present, there is a lack of a working method for a 3D printer material changing mechanism to scientifically guide people to use a new type of 3D printer material changing mechanism.

[0003] Therefore, a new technology is needed to solve the problem that the prior art lacks a new 3D printer material changing mechanism; a new technology is needed to solve the problem that the prior art lacks "a 3D printer with a new 3D printer material changing mechanism"; a new technology is needed to solve the problem that the prior art lacks "a working method of a new 3D printer material changing mechanism". Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides a reliable and durable 3D printer material changing mechanism, which can flexibly change consumables for printing and meet people's diverse printing needs.

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

[0006] A 3D printer material changing mechanism, comprising 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 consumables winding roller mechanism;

[0007] The first driving device is connected to the first setting position of the feeding mechanism and is used to drive the feeding mechanism to rotate;

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

[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 feed driven components are provided with a plurality of groups, and the plurality of groups of feed driven components are respectively arranged beside the feed mechanism and the material selection mechanism;

[0011] After the material selection mechanism is actuated, it can act on the material feeding driven component at the set position, driving the material feeding driven component to approach the material feeding mechanism for clamping the consumables; wherein, when the material feeding driven component approaches the material feeding mechanism, it can connect the material feeding linkage mechanism with the consumables winding roller mechanism;

[0012] The consumables roller mechanism is transmission-connected to the consumables roll; wherein the consumables roll is used to carry consumables; after the consumables are drawn out from the consumables roll, they can be initially set between the feeding mechanism and several groups 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 shell; the first drive device, the feeding mechanism, the feeding driven assembly, the material selection mechanism, the feeding linkage mechanism, the second drive device, and the consumables roller mechanism are respectively arranged at set positions of the shell.

[0014] Further, the feeding mechanism includes a first rotating shaft, a feeding wheel and a first bearing; there are several feeding wheels, and the several feeding wheels are arranged on the first rotating shaft to maintain a set spacing; the first end of the first rotating shaft is connected to the first driving device; the second end of the first rotating shaft is connected to the feeding linkage mechanism through the first transmission assembly; there are several first bearings on the first rotating shaft, and the first rotating shaft is arranged at a set position of the shell through several first bearings.

[0015] Furthermore, each group of the feed follower components includes a consumable channel component, an elastic deformation component, a tilting arm bracket, a feed follower wheel and a transmission wheel; the feed follower wheel is arranged at a first set position of the tilting arm bracket; the transmission wheel is arranged at a second set position of the tilting arm bracket; the tilting arm bracket is rotatably arranged on the consumable channel component through the elastic deformation component; the consumable channel component has a feeding channel for consumables to pass through; the consumable channel component can be arranged on the shell, and after the arrangement, a set adjustable clamping gap is maintained between the feed follower wheel and the feed wheel.

[0016] Furthermore, each group of the feed driven components is also provided with a detection device, and the detection device is used to detect whether the consumables pass through the feed wheel or the feed channel.

[0017] Furthermore, the material selection mechanism includes a movable abutment component and a position adjustment component; the movable abutment component is movably arranged 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 guiding direction; wherein, after the movable abutment component moves, it can press the tilting rod bracket at a set position to reduce the clamping gap, so as to enable the feeding driven wheel to clamp the consumables.

[0018] Further, the feeding linkage mechanism includes a second rotating shaft and a linkage wheel; the linkage wheel is provided in plurality; the plurality of linkage wheels are arranged on the second rotating shaft with a set spacing; the second rotating shaft is rotatably arranged at a set position of 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 consumables roll mechanism comprises a third rotating shaft and a roll; the roll is provided in a plurality; the plurality of rolls are rotatably arranged on the third rotating shaft with a set spacing; the third rotating shaft is arranged at a set position of the housing; the roll can be connected to the transmission part of the consumable roll;

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

[0021] Another object of the present invention is to provide a 3D printer to facilitate people to print models and meet people's diverse printing needs.

[0022] A 3D printer comprises a nozzle, a branch converging channel, a consumable roll and the material changing mechanism of the 3D printer; the branch converging channel comprises a main channel and a plurality of branch channels; one end of the plurality of branch channels are respectively connected to the feed channel of the consumable channel part of the feed driven component at a set position, and the other end is connected to the main channel; the front end of the main channel is connected to the printing channel of the nozzle; the consumables on the consumable roll can be introduced into the feed channel of the consumable channel part of the feed driven component.

[0023] Furthermore, the 3D printer also includes a control device; the first driving device and the second driving device are respectively connected to the control device.

[0024] Another object of the present invention is to provide a working method of a 3D printer material changing mechanism to scientifically guide people to use a new type of 3D printer material changing mechanism.

[0025] A working method of a material changing mechanism of a 3D printer, which is performed based on the material changing mechanism of the 3D printer, 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";

[0026] The first working method is a working method in a "no feeding instruction state", which includes the following working steps:

[0027] SA1. In the state without feeding instruction, the movable abutment component of the material selection mechanism stops at a set initial position, and at the initial position, the movable abutment component is away from the feeding driven component;

[0028] The second working method is a working method under the "feeding instruction state", which includes the following working steps:

[0029] SB1. In the feeding instruction state, the control device of the 3D printer issues a feeding instruction, the second driving device is started, and drives the movable abutment component on the material selection mechanism to move to the corresponding feeding follower component selected by the instruction, and the movable abutment component presses the tilting rod bracket of the feeding follower component, so that the feeding follower wheel of the feeding follower component approaches the feeding wheel of the feeding mechanism, so that the clamping gap becomes smaller, and the consumables between the feeding follower wheel and the feeding wheel are clamped;

[0030] SB2. After the movable abutment assembly is confirmed to accurately abut the tilting rod bracket, the second driving device stops moving, and the first driving device starts to drive the first rotating shaft and the feeding wheel of the feeding mechanism to rotate, and then the consumables are transported under the action of the feeding wheel and the feeding driven wheel;

[0031] The third working method is a working method under the "material change instruction state", which includes the following working steps:

[0032] SC1, in the material change instruction state, the second driving device is switched from the closed state to the started state, driving the movable contact assembly on the material selection mechanism to move to the next group of the feed driven assembly, pressing the tilting rod bracket of the feed driven assembly, so that the consumables between the feed driven wheel and the feed wheel are clamped;

[0033] SC2. After the movable abutment assembly is confirmed to accurately abut the tilting rod bracket, the second driving device stops moving, and the first driving device starts to drive the first rotating shaft and the feeding wheel of the feeding mechanism to rotate, and then the consumables are transported under the action of the feeding wheel and the feeding driven wheel;

[0034] The fourth working method is a working method "when all printing instructions are completed", which includes the following working steps:

[0035] SD1. When all printing instructions are completed, the first driving device drives the first rotating shaft and the feeding wheel of the feeding mechanism to rotate, returns the last printed consumable to the set position and then closes, and the second driving device drives the movable abutment component on the material selection mechanism to stop at the initial position.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] A 3D printer material changing mechanism of the present invention can flexibly change consumables for printing, and can meet people's diverse printing needs. The present invention can be used for a single-nozzle 3D printer to print multi-color consumables, or for a single-nozzle 3D printer to print consumables of multiple different materials. The feed driven assembly of the present invention is provided with several groups, and people can arrange consumables between the feed mechanism and each group of feed driven assemblies, so that the 3D printer material changing mechanism of the present invention can accommodate the arrangement of multiple consumables (such as consumables of different colors and consumables of different materials) at the same time; through the 3D printer material changing mechanism of the present invention, people can select the desired consumables from a variety of consumables, transport them to the nozzle, and print them out; specifically, the present invention uses a material selection mechanism to press the feed driven assembly at a set position, thereby clamping the target consumables, and then the feed mechanism and the feed driven assembly are combined to transport the consumables, and at the same time, the feed linkage mechanism is rotated by the feed driven assembly and the consumable roller mechanism, and the consumable roll rotates with the feed mechanism, thereby realizing efficient transportation of consumables, such as consumable feeding or consumable returning.

[0038] A 3D printer of the present invention has a novel 3D printer material changing mechanism, which can facilitate people to print models of different styles and meet people's diverse printing needs.

[0039] The working method of the material changing mechanism of a 3D printer of the present invention can scientifically guide people to use the new material changing mechanism of a 3D printer, which is beneficial to improving the service life and use safety of the new material changing mechanism of a 3D printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0041] Figure 1 This is a schematic diagram of the arrangement relationship between the 3D printer material changing mechanism and the consumable roll ( Figure 1 Shell cover not shown);

[0042] Figure 2 yes Figure 1 A three-dimensional diagram after removing the consumable roll and outer box;

[0043] Figure 3 yes Figure 2 The position and connection relationship diagram of "the first driving device, the feeding mechanism, the feeding driven assembly, the material selecting mechanism, the first transmission assembly, the feeding linkage mechanism, the second driving device, and the consumables roller mechanism";

[0044] Figure 4 yes Figure 3 A local enlarged view at point B;

[0045] Figure 5 yes Figure 3 A three-dimensional diagram from another perspective;

[0046] Figure 6 yes Figure 3 A three-dimensional schematic diagram of the feeding mechanism;

[0047] Figure 7 yes Figure 3 A three-dimensional schematic diagram of the first driving device, the feeding mechanism and the feeding linkage mechanism (also a schematic diagram of the connection relationship);

[0048] Figure 8 yes Figure 3 A three-dimensional schematic diagram of a feeding mechanism and a set of feeding driven components;

[0049] Fig. 9 yes Figure 8 A three-dimensional diagram from another perspective;

[0050] Fig.10 yes Fig. 9 A partial enlarged view at C;

[0051] Fig.11 yes Figure 3 A three-dimensional schematic diagram of the material selection mechanism;

[0052] Fig.12 The movable abutment component has not yet pressed the tilting rod bracket, and the position relationship diagram of the feeding driven wheel, the transmission wheel and each component ( Fig.12 Can show the relationship between the main components of the 3D printer material changing mechanism in the non-feeding state);

[0053] Fig.13 yes Fig.12 The position relationship diagram of the movable abutment assembly abutting the tilting rod bracket, the feeding driven wheel, the transmission wheel and each component ( Fig.13 It can represent the connection relationship between the main components of the 3D printer material changing mechanism in the feeding state).

[0054] Reference numerals:

[0055] 1-3D printer material changing mechanism; 11-first driving device; 12-feeding mechanism; 13-feeding driven assembly; 14-material selection mechanism; 15-first transmission assembly; 16-feeding linkage mechanism; 17-second driving device; 18-consumables roll mechanism; 19-consumables roll; 20-consumables; 21-housing; 22-transmission part; 23-first rotating shaft; 24-feeding wheel; 25-first bearing; 26-first motor; 27-second transmission assembly; 28-consumables channel member; 29-elastic deformation member; 30-tilt rod bracket; 31-feeding 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-consumables outlet connector; 41-movable - abutment assembly; 42-position adjustment assembly; A-guiding direction; 43-second motor; 44-third transmission assembly; 45-sliding member; 46-abutment member; 47-screw; 48-optical axis; 49-first through hole; 50-second through hole; 51-second bearing; 52-bearing; 53-convex portion; 54-second rotating shaft; 55-interlocking wheel; 56-third rotating shaft; 57-roller; 58-fourth bearing; 59-first synchronous wheel; 60-first annular synchronous belt; 61-second synchronous wheel; 62-third synchronous wheel; 63-second annular synchronous belt; 64-fourth synchronous wheel; 65-fifth synchronous wheel; 66-third annular synchronous belt; 67-sixth synchronous wheel; 68-outer box; 69-inner box; 70-feeding hole; B-partial enlargement icon number; C-partial enlargement icon number. DETAILED DESCRIPTION

[0056] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0057] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0058] Reference Figures 1 to 13, a 3D printer material changing mechanism 1, comprising a first driving device 11, a feeding mechanism 12, a feeding driven assembly 13, a material selecting mechanism 14, a first transmission assembly 15, a feeding linkage mechanism 16, a second driving device 17, and a consumables roller mechanism 18;

[0059] The first driving device 11 is connected to the first setting position of the feeding mechanism 12, and is used to drive the feeding mechanism 12 to rotate;

[0060] The second setting position of the feeding mechanism 12 is connected to the feeding linkage mechanism 16 through the first transmission assembly 15;

[0061] 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;

[0062] The feed follower assembly 13 is provided with a plurality of groups, which can be used to cooperate with the material selection mechanism 14 to select the consumable material 20; the plurality of groups of the feed follower assembly 13 are respectively arranged beside the feed mechanism 12 and the material selection mechanism 14;

[0063] After the material selection mechanism 14 is actuated, it can act on the feed follower assembly 13 at the set position, driving the feed follower assembly 13 to approach the feed mechanism 12, so as to clamp the consumables 20; wherein, when the feed follower assembly 13 approaches the feed mechanism 12, it can drive and connect the feed linkage mechanism 16 with the consumables roller mechanism 18;

[0064] The consumable roller mechanism 18 is transmission-connected with the consumable roll 19; wherein the consumable roll 19 is used to carry the consumable 20; after the consumable 20 is drawn out from the consumable roll 19, it can be initially set between the feeding mechanism 12 and a plurality of groups of the feeding driven components 13; the consumable 20 is clamped and conveyed in time by the feeding mechanism 12 and the feeding driven components 13 at the set position, and finally the consumable 20 is conveyed forward to the nozzle of the 3D printer.

[0065] Reference Figures 1 to 13 In one embodiment, the 3D printer material changing mechanism 1 also includes a shell 21; 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, and the consumables roller mechanism 18 are respectively arranged at the set positions of the shell 21.

[0066] In one embodiment, the 3D printer material changing mechanism 1 further includes a shell cover ( Figure 1 The shell cover can be arranged on the shell 21 to protect the structure installed in the shell 21, such as the consumable roll 19 and other structures.

[0067] Reference Figures 1 to 13 In one embodiment, the feeding mechanism 12 includes a first rotating shaft 23, a feeding wheel 24 and a first bearing 25; the feeding wheels 24 are provided in plurality, and the plurality of feeding wheels 24 are arranged on the first rotating shaft 23 with a set spacing; the first end of the first rotating shaft 23 is connected to the first driving device 11; the second end of the first rotating shaft 23 is connected to the feeding linkage mechanism 16 through the first transmission assembly 15; the first rotating shaft 23 is provided with a plurality of the first bearings 25, and the first rotating shaft 23 is arranged at a set position of the housing 21 through the plurality of the first bearings 25. The feeding wheel 24 rotates with the first rotating shaft 23, and can drive the clamped consumable 20 to move forward or backward; at least two feeding wheels 24 are provided.

[0068] In one embodiment, the feed wheel 24 is a metal wheel with small teeth or lines, or the feed wheel 24 is a plastic wheel with small teeth or lines; the feed wheel 24 has an axial hole, and the feed wheel 24 cooperates with the first rotating shaft 23 through its own axial hole. In another embodiment, the feed wheel 24 is a cylindrical cam, which is integrally processed with the first rotating shaft 23, and the cylindrical cam is coaxial with the first rotating shaft 23.

[0069] Reference Figures 1 to 13 In one embodiment, the first driving device 11 includes a first motor 26 and a second transmission assembly 27, and the output shaft of the first motor 26 is connected to the first rotating shaft 23 through the second transmission assembly 27. The first driving device 11 can increase the power for feeding or withdrawing materials.

[0070] Reference Figures 1 to 13 In one embodiment, each group of the feed follower assembly 13 includes a consumable channel member 28, an elastic deformation member 29, a tilting rod bracket 30, a feed follower wheel 31 and a transmission wheel 32; the feed follower wheel 31 is arranged at a first setting position of the tilting rod bracket 30; the transmission wheel 32 is arranged at a second setting position of the tilting rod bracket 30; the tilting rod bracket 30 is rotatably arranged on the consumable channel member 28 through the elastic deformation member 29; the consumable channel member 28 has a feeding channel 33 for the consumable 20 to pass through; the consumable channel member 28 can be arranged on the housing 21, and after being arranged, the feed follower wheel 31 and the feed wheel 24 maintain a set adjustable clamping gap 34. The initial clamping gap 34 is relatively large, larger than the diameter of the consumable 20, and the consumable 20 will not be clamped when passing through the initial clamping gap 34, so that the consumable 20 will not be fed or withdrawn.

[0071] In one embodiment, the elastic deformation member 29 is a torsion spring, a compression spring, or a tension spring. With the existence of the elastic deformation member 29, the tilting rod bracket 30 can be restored to the initial position after losing the pressing effect of the movable abutment component 41 of the material selection mechanism 14, so that the initial clamping gap 34 between the feeding driven wheel 31 and the feeding wheel 24 is restored. Figures 1 to 13 In the present embodiment, the elastic deformation member 29 is a torsion spring 38 ; the tilting rod bracket 30 is rotatably disposed on the consumable channel member 28 through the torsion spring 38 .

[0072] Reference Figures 1 to 13 In one embodiment, each group of the feed 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 tilting rod bracket 30 and the torsion spring 38 in series, and at the same time, through the first rotating shaft 35 and the torsion spring 38, the tilting rod bracket 30 is rotatably and recoverably arranged on the consumable channel member 28; the two legs of the torsion spring 38 maintain a set opening angle, one leg is connected to the consumable channel member 28, and the other leg is connected to the tilting rod bracket 30; the feed driven wheel 31 is rotatably arranged on the tilting rod bracket through the second rotating shaft 36 30; the transmission wheel 32 is rotatably arranged on the tilting rod bracket 30 through the third rotating shaft 37; the tilting rod bracket 30 can be flexibly tilted through the torsion spring 38, so that 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 roller mechanism 18; therefore, 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 roller mechanism 18. Among them, the linkage wheel 55 is connected to the roller 57 of the consumable roller mechanism 18 through the transmission wheel 32 in a timely manner, thereby driving the consumable roll 19 to rotate, so as to realize the release or recovery of the consumable 20 by the consumable roll 19.

[0073] In one embodiment, the feed follower assembly 13 is used to clamp the selected printing consumable 20 between the feed follower wheel 31 and the feed wheel 24 after selecting the printing consumable 20, and as the first drive device 11 drives, the feed wheel 24 rotates, and finally transports the consumable 20 forward to the nozzle of the 3D printer.

[0074] Reference Figures 1 to 13 In one embodiment, each group of the feed driven assembly 13 is also provided with a detection device 39; the consumable channel member 28 is provided with the detection device 39, and the detection device 39 is used to detect whether the consumable 20 passes through the feed wheel 24 or the feed channel 33.

[0075] In one embodiment, the detection device 39 is one of an optical coupler switch, a displacement sensor, a micro switch, and a Hall sensor. Figures 1 to 13 In this embodiment, the detection device 39 is an optical coupler switch.

[0076] Reference Figures 1 to 13 In one embodiment, each group of the feed driven components 13 also includes a consumable material outlet connector 40; the consumable material outlet connector 40 is arranged on the consumable material channel component 28, and the consumable material outlet connector 40 is connected to the feed channel 33; the consumable material outlet connector 40 can be connected to a branch channel of the 3D printer ("branch channel" is mentioned below).

[0077] 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 arranged 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 driving the movable abutment component 41 to move along the guide direction A; wherein, after the movable abutment component 41 moves, it can press the tilting rod bracket 30 at the set position, reduce the clamping gap 34, and enable the feed driven wheel 31 to clamp the consumable 20. The movable abutment component 41, in conjunction with the feed driven component 13 at the set position, can select the consumable to be printed.

[0078] Reference Figures 1 to 13 In one embodiment, the second driving 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 .

[0079] Reference Figures 1 to 13 In this embodiment, the movable abutment assembly 41 includes a sliding member 45 and an abutment member 46; the position adjustment assembly 42 includes a lead screw 47 and an optical axis 48; the abutment member 46 is arranged on the sliding member 45, and is used to abut the tilting rod bracket 30; the sliding member 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 (such as a threaded connection); the second through hole 50 is connected to the optical axis 48 (such as a smooth connection).

[0080] Reference Figures 1 to 13 In this embodiment, the position adjustment assembly 42 also includes a second bearing 51; the lead screw 47 is rotatably fixed at a set position of the housing 21 through the second bearing 51; and the optical axis 48 is (directly) fixed at a set position of the housing 21.

[0081] In another embodiment, the movable abutment assembly includes a sliding block and an abutment block; the abutment block is arranged on the sliding block, and the abutment block is used to press the tilt rod bracket; the position adjustment assembly includes a slider guide rail and a conveying belt; the sliding block is arranged on the slider guide rail and the conveying 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 conveying belt to move, thereby realizing the abutment block pressing the tilt rod bracket at the set position.

[0082] The transmission method for causing the movable abutment assembly to move in the present invention includes but is not limited to screw rod transmission or "slider guide rail + transport belt" transmission.

[0083] Reference Figures 1 to 13 In one embodiment, the abutment member 46 may be a bearing 52 or an arc-shaped protrusion on the sliding member 45. Correspondingly, in order to better enable the tilting rod bracket 30 to receive the abutment of the abutment member 46, a convex portion 53 is provided at a corresponding position on the tilting rod bracket 30.

[0084] In one embodiment, the movable abutting assembly 41 moves to the convex portion 53 just against the tilting rod bracket 30, and the operation of the second driving device 17 (such as a stepping motor) can be accurately controlled by the control program of the 3D printer, thereby accurately controlling the rotation of the screw rod 47, and then accurately controlling the moving distance of the sliding member 45 on the screw rod 47, so as to accurately control the stop position of the sliding member 45. In another embodiment, the movable abutting assembly 41 moves to the convex portion 53 just against the tilting rod bracket 30, and the detection function of the sensor switch is used to accurately stop the sliding member 45. For example, a sensor switch is set on the tilting rod bracket 30. When the sliding member 45 moves to the point where the abutting member 46 just presses against the target convex portion 53, the sensor switch generates detection information and feeds the detection information back to the control device of the 3D printer ("control device" is mentioned below). After judgment and analysis, the control device accurately shuts down the operation of the second driving device 17 to make the sliding member 45 accurately stop at the target position; wherein, the sensor switch and the control device are wired or wirelessly connected.

[0085] Reference Figures 1 to 13 In one embodiment, the feeding linkage mechanism 16 includes a second rotating shaft 54 ​​and a linkage wheel 55; a plurality of linkage wheels 55 are provided; a plurality of linkage wheels 55 are arranged on the second rotating shaft 54 ​​with a set interval, and the linkage wheel 55 rotates together with the second rotating shaft 54; the second rotating shaft 54 ​​is rotatably arranged at a set position of 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;

[0086] The consumables roll mechanism 18 includes a third rotating shaft 56 and a roll 57; a plurality of rolls 57 are provided; a plurality of rolls 57 are rotatably arranged on the third rotating shaft 56 with a set spacing; the third rotating shaft 56 is arranged at a set position of the housing 21; the roll 57 can be connected to the transmission part 22 of the consumable roll 19;

[0087] The linkage wheel 55 is timely connected to the winding roller 57 through the transmission wheel 32, thereby driving the consumable roll 19 to rotate.

[0088] In one embodiment, the feeding linkage mechanism 16 further includes a plurality of third bearings; the plurality of third bearings are arranged on the second rotating shaft 54 ​​with a set spacing; the second rotating shaft 54 ​​is rotatably fixed at a set position of the housing 21 through the plurality of third bearings;

[0089] Reference Figures 1 to 13 In one embodiment, the consumable material roller mechanism 18 also includes a plurality of fourth bearings 58; the plurality of fourth bearings 58 are arranged on the third rotating shaft 56 at a set interval; the third rotating shaft 56 is fixed to a set position of the shell 21 through the plurality of fourth bearings 58 (wherein, after the third rotating shaft 56 is fixed to the shell 1, it will not rotate itself, but the roller 57 can rotate on the third rotating shaft 56).

[0090] In one embodiment, the first transmission assembly 15 is one of a synchronous wheel belt assembly, a coupling assembly, and a gear assembly; the second transmission assembly 27 is one of a synchronous wheel belt assembly, a coupling assembly, and a gear assembly; the third transmission assembly 44 is one of a synchronous wheel belt assembly, a coupling assembly, and a gear assembly.

[0091] Reference Figures 1 to 13 In this embodiment, the first transmission assembly 15 is a synchronous wheel belt assembly, which includes a first synchronous wheel 59, a first annular synchronous belt 60 and a second synchronous wheel 61; the first synchronous wheel 59 is arranged at the second end of the first rotating shaft 23; the second synchronous wheel 61 is arranged at one end of the second rotating shaft 54; the first annular synchronous belt 60 connects the first synchronous wheel 59 and the second synchronous wheel 61. Among them, the number of teeth of the second synchronous wheel 61 is different from that of the first synchronous wheel 59, and the number of teeth of the second synchronous wheel 61 is greater than that of the first synchronous wheel 59, which is designed to achieve transmission deceleration. The first transmission assembly 15 can drive the second rotating shaft 54 ​​and the linkage wheel 55 to rotate, and then through the transmission wheel 32, it can drive the roller 57 to rotate, and then the roller 57 can drive the consumable roll 19 to rotate, so as to realize the release or recovery of the consumable roll 19.

[0092] Reference Figures 1 to 13 In this embodiment, the second transmission assembly 27 is a synchronous wheel belt assembly, which includes a third synchronous wheel 62, a second annular synchronous belt 63 and a fourth synchronous wheel 64; the third synchronous wheel 62 is arranged on the output shaft of the first motor 26; the fourth synchronous wheel 64 is arranged at the first end of the first rotating shaft 23; the second annular synchronous belt 63 connects the third synchronous wheel 62 and the fourth synchronous wheel 64.

[0093] Reference Figures 1 to 13 In this embodiment, the third transmission assembly 44 is a synchronous wheel belt assembly, which includes a fifth synchronous wheel 65, a third annular synchronous belt 66 and a sixth synchronous wheel 67; the fifth synchronous wheel 65 is arranged on the conveying shaft of the second motor 43; the sixth synchronous wheel 67 is arranged on one end of the screw rod 47; the third annular synchronous belt 66 connects the fifth synchronous wheel 65 and the sixth synchronous wheel 67.

[0094] Another object of the present invention is to provide a 3D printer to facilitate people to print models and meet people's diverse printing needs.

[0095] Reference Figures 1 to 13 A 3D printer comprises a nozzle, a branch convergence channel, a consumable roll 19 and the 3D printer material changing mechanism 1; the branch convergence channel comprises a main channel and a plurality of branch channels; one end of the plurality of branch channels is respectively connected to the feed channel 33 of the consumable channel member 28 of the feed driven assembly 13 at a set position, and the other end is connected to the main channel; the front end of the main channel is connected to the printing channel of the nozzle; the consumable 20 on the consumable roll 19 can be introduced into the feed channel 33 of the consumable channel member 28 of the feed driven assembly 13. In one embodiment, the consumable 20 is a consumable filament with a circular cross section.

[0096] In one embodiment, the branch converging channels are five-way pipes.

[0097] Reference Figure 1 In one embodiment, there are several consumable rolls 19; several of the consumable rolls 19 carry consumables 20 respectively; several of the consumable rolls 19 are rotatably arranged in the shell 21; the transmission parts 22 of several of the consumable rolls 19 are respectively connected to the corresponding winding rollers 57; according to actual needs, consumables 20 of different colors or consumables 20 of different materials can be carried by corresponding consumable rolls 19.

[0098] In one embodiment, the 3D printer further comprises a control device (such as a controller); the first driving device 11, the second driving device 17, the detection device 39, and the sensor switch are respectively connected to the control device. The control device can issue control instructions.

[0099] Reference Figures 1 to 13 In one embodiment, the shell 21 includes an outer box 68 and an inner box 69, and the outer box 68 is installed on the inner box 69; the first driving device 11, the feeding mechanism 12, the feeding driven assembly 13, the material selection mechanism 14, the feeding linkage mechanism 16, the second driving device 17, the consumable roller mechanism 18, the consumable roll 19, and the control device are respectively arranged at the set positions of the inner box 69; a plurality of feed holes 70 are provided on the outer box 68; a plurality of the feed holes 70 correspond to the clamping gaps 34 respectively; the consumables 20 on the consumable roll 19 are introduced into the clamping gap 34 and the feed channel 33 through the feed holes 70. The detection device 39 on the consumable channel member 28 can detect whether the consumable 20 passes through the feed wheel 24 or the feed channel 33, and is used to determine whether the consumable 20 at each location is ready. If the detection device 39 detects that the consumable 20 is ready, the corresponding feeding or withdrawing action can be performed; if the detection device 39 does not detect that the consumable 20 passes through the feed wheel 24 or the feed channel 33, it will feed back a signal to the control device, and the first drive device 11 will not work or suspend the current work, so that the first rotating shaft 23 and the feed wheel 24 of the feeding mechanism 12 will not rotate, and at the same time, the linkage wheel 55, the transmission wheel 32, the winding roller 57, and the corresponding transmission part 22 will not rotate.

[0100] Another object of the present invention is to provide a working method of a 3D printer material changing mechanism to scientifically guide people to use a new type of 3D printer material changing mechanism.

[0101] Reference Figures 1 to 13 , a working method of 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";

[0102] The first working method is a working method in a "no feeding instruction state", which includes the following working steps:

[0103] SA1. In the state without feeding instruction, the movable abutment component 41 of the material selection mechanism 14 stops at a set initial position, and at the initial position, the movable abutment component 41 is away from the feeding driven component 13;

[0104] The second working method is a working method under the "feeding instruction state", which includes the following working steps:

[0105] SB1. In the feeding instruction state, the control device of the 3D printer issues a feeding instruction, and the second driving device 17 is started, driving the movable abutment component 41 on the material selection mechanism 14 to move to the corresponding feeding follower component 13 selected by the instruction, and the movable abutment component 41 presses the tilting rod bracket 30 of the feeding follower component 13, so that the feeding follower wheel 31 of the feeding follower component 13 approaches the feeding wheel 24 of the feeding mechanism 12, so that the clamping gap 34 becomes smaller, thereby clamping the consumables 20 between the feeding follower wheel 31 and the feeding wheel 24;

[0106] SB2. After the state that the movable abutting assembly 41 accurately presses the tilting rod bracket 30 is confirmed, the second driving device 17 stops moving, and the first driving device 11 starts to drive the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 to rotate, and then the consumables 20 are transported (feeding or withdrawing) under the action of the feeding wheel 24 and the feeding driven wheel 31;

[0107] The third working method is a working method under the "material change instruction state", which includes the following working steps:

[0108] SC1. After the current printing is finished, another consumable material is to be printed. Under the material change instruction state, the second driving device 17 is switched from the closed state to the started state, driving the movable abutment component 41 on the material selection mechanism 14 to move to the next group of the feed follower components 13, pressing the tilting rod bracket 30 of the feed follower components 13, so that the consumable material 20 between the feed follower wheel 31 and the feed wheel 24 is clamped;

[0109] SC2. After the state that the movable abutting assembly 41 accurately presses the tilting rod bracket 30 is confirmed, the second driving device 17 stops moving, and the first driving device 11 starts to drive the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 to rotate, and then the consumables 20 are transported (feeding or withdrawing) under the action of the feeding wheel 24 and the feeding driven wheel 31;

[0110] The fourth working method is a working method "when all printing instructions are completed", which includes the following working steps:

[0111] SD1. When all printing instructions are completed, the first driving device 11 drives the first rotating shaft 23 and the feeding wheel 24 of the feeding mechanism 12 to rotate, returns the last printed consumable 20 to the set position and then closes, and the second driving device 17 drives the movable abutment component 41 on the material selection mechanism 14 to stop at the initial position.

[0112] When the working method of the material changing mechanism of the 3D printer is one of the “first working method, the second working method, the third working method, and the fourth working method”, the material changing mechanism of the 3D printer is executed according to one of the working methods.

[0113] When the working method of the material changing mechanism of a 3D printer is multiple of "a first working method, a second working method, a third working method, and a fourth working method", such as the working method of the material changing mechanism of a 3D printer includes the first working method, the second working method, the third working method, and the fourth working method, then the material changing mechanism of the 3D printer executes the first working method, the second working method, the third working method, and the fourth working method in order, such as when the material changing mechanism of the 3D printer works, it first executes according to the first working method, then executes according to the second working method, then executes according to the third working method, and finally executes according to the fourth working method.

[0114] For other contents of the 3D printer material changing mechanism, 3D printer and working method described in the present invention, please refer to the prior art and will not be repeated here.

[0115] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A 3D printer material changing mechanism, characterized in that: It includes 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 consumables winding roller mechanism; The first driving device is connected to the first setting position of the feeding mechanism and is used to drive the feeding mechanism to rotate; The second setting position of the feeding mechanism is connected to the feeding linkage mechanism through the first transmission assembly; The second driving device is connected to the material selection mechanism and is used to drive the material selection mechanism to move; The feed driven components are provided with a plurality of groups, and the plurality of groups of feed driven components are respectively arranged beside the feed mechanism and the material selection mechanism; After the material selection mechanism is actuated, it can act on the material feeding driven component at the set position, driving the material feeding driven component to approach the material feeding mechanism for clamping the consumables; wherein, when the material feeding driven component approaches the material feeding mechanism, it can connect the material feeding linkage mechanism with the consumables winding roller mechanism; The consumables roller mechanism is transmission-connected to the consumables roll; wherein the consumables roll is used to carry consumables; after the consumables are drawn out from the consumables roll, they can be initially set between the feeding mechanism and several groups 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 material changing mechanism of the 3D printer according to claim 1, characterized in that: It also includes a shell; the first drive device, the feeding mechanism, the feeding driven assembly, the material selection mechanism, the feeding linkage mechanism, the second drive device, and the consumables roller mechanism are respectively arranged at set positions of the shell.

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

4. The material changing mechanism of the 3D printer according to claim 3, characterized in that: Each group of the feed follower components includes a consumable channel component, an elastic deformation component, a tilting arm bracket, a feed follower wheel and a transmission wheel; the feed follower wheel is arranged at a first set position of the tilting arm bracket; the transmission wheel is arranged at a second set position of the tilting arm bracket; the tilting arm bracket is rotatably arranged on the consumable channel component through the elastic deformation component; the consumable channel component has a feeding channel for consumables to pass through; the consumable channel component can be arranged on the shell, and after the arrangement, a set adjustable clamping gap is maintained between the feed follower wheel and the feed wheel.

5. The material changing mechanism of the 3D printer according to claim 4, characterized in that: Each group of the feed driven components is also provided with a detection device, and the detection device is used to detect whether the consumables pass through the feed wheel or the feed channel.

6. The material changing mechanism of the 3D printer 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 arranged 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 guiding direction; wherein, after the movable abutment component moves, it can press the tilting rod bracket at a set position to reduce the clamping gap, so as to enable the feeding driven wheel to clamp the consumables.

7. The material changing mechanism of the 3D printer according to claim 6, characterized in that: The feeding linkage mechanism comprises a second rotating shaft and a linkage wheel; the linkage wheel is provided in plurality; the plurality of linkage wheels are arranged on the second rotating shaft with a set spacing; the second rotating shaft is rotatably arranged at a set position of 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 consumables roll mechanism comprises a third rotating shaft and a roll; the roll is provided in a plurality; the plurality of rolls are rotatably arranged on the third rotating shaft with a set spacing; the third rotating shaft is arranged at a set position of the housing; the roll can be connected to the transmission part of the consumable roll; The linkage wheel is timely connected to the winding roller through the transmission wheel, thereby driving the consumable roll to rotate.

8. A 3D printer, characterized in that: It comprises a nozzle, a branch converging channel, a consumable roll and a material changing mechanism of a 3D printer as described in any one of claims 1 to 7; the branch converging channel comprises a main channel and a plurality of branch channels; one end of the plurality of branch channels are respectively connected to the feed channel of the consumable channel part of the feed driven component at a set position, and the other end is connected to the main channel; the front end of the main channel is connected to the printing channel of the nozzle; the consumables on the consumable roll can be introduced into the feed channel of the consumable channel part of the feed driven component.

9. The 3D printer according to claim 8, characterized in that: The 3D printer further includes a control device; the first driving device and the second driving device are respectively connected to the control device.

10. A working method of a material changing mechanism of a 3D printer, which is based on the material changing mechanism of a 3D printer according to any one of claims 1 to 7, characterized in that: The working method is one or more of "the first working method, the second working method, the third working method, and the fourth working method"; The first working method is a working method "under no feeding instruction state", which includes the following working steps: SA1. In the state without feeding instruction, the movable abutment component of the material selection mechanism stops at a set initial position, and at the initial position, the movable abutment component is away from the feeding driven component; Wherein, the second working method is a working method under "feeding instruction state", which includes the following working steps: SB1. In the feeding instruction state, the control device of the 3D printer issues a feeding instruction, the second driving device is started, and drives the movable abutment component on the material selection mechanism to move to the corresponding feeding follower component selected by the instruction, and the movable abutment component presses the tilting rod bracket of the feeding follower component, so that the feeding follower wheel of the feeding follower component approaches the feeding wheel of the feeding mechanism, so that the clamping gap becomes smaller, and the consumables between the feeding follower wheel and the feeding wheel are clamped; SB2. After the movable abutment assembly is confirmed to accurately abut the tilting rod bracket, the second driving device stops moving, and the first driving device starts to drive the first rotating shaft and the feeding wheel of the feeding mechanism to rotate, and then the consumables are transported under the action of the feeding wheel and the feeding driven wheel; The third working method is a working method under the "material change instruction state", which includes the following working steps: SC1, in the material change instruction state, the second driving device is switched from the closed state to the started state, driving the movable contact assembly on the material selection mechanism to move to the next group of the feed driven assembly, pressing the tilting rod bracket of the feed driven assembly, so that the consumables between the feed driven wheel and the feed wheel are clamped; SC2. After the movable abutment assembly is confirmed to accurately abut the tilting rod bracket, the second driving device stops moving, and the first driving device starts to drive the first rotating shaft and the feeding wheel of the feeding mechanism to rotate, and then the consumables are transported under the action of the feeding wheel and the feeding driven wheel; The fourth working method is a working method of "when all printing instructions are completed", which includes the following working steps: SD1. When all printing instructions are completed, the first driving device drives the first rotating shaft and the feeding wheel of the feeding mechanism to rotate, returns the last printed consumable to the set position and then closes, and the second driving device drives the movable abutment component on the material selection mechanism to stop at the initial position.

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