Print consumable conveyor and 3D printer

Abstract

The application provides a printing material conveying machine and a 3D printer, which comprise a discharge channel, at least two feeding channels, a pushing device and a cutting device. The at least two feeding channels are respectively connected with the discharge channel. The pushing device is arranged on the feeding channel and is used to drive the material in at least one feeding channel to advance to the discharge channel or to retreat. The cutting device is arranged on the discharge channel and is used to cut the material when the pushing device drives the material to retreat to a set position. The printing material conveying machine and the 3D printer provided by the application can drive at least one of the at least two materials to discharge and retreat through the pushing device, thereby avoiding manual material retreat operation and reducing the workload of manual operation. The cutting device can cut the end of the material when the material retreats, thereby avoiding the problems of blockage and material jam caused by the irregular consumption end of the material.

Description

Technical Field

[0001] This application belongs to the field of stereolithography technology, specifically relating to a printing consumable conveyor and a 3D printer. Background Technology

[0002] A 3D printer (3DP), also known as a three-dimensional printing device, is a type of cumulative manufacturing technology, or rapid prototyping technology. It uses a digital model file as a basis and employs special wax materials, powdered metals, or plastics and other adhesive materials to create three-dimensional objects by printing multiple layers of adhesive materials sequentially.

[0003] Existing 3D printers, especially fused deposition modeling (FDM) 3D printers, typically use filament conveyors to transport filaments. However, existing filament conveyors are limited in function, only able to transport a single type of filament, and are no longer suitable for the development of 3D printing. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this application is to provide a printing consumable conveyor and a 3D printer that can have more functions to adapt to the development of 3D printing.

[0005] To address the aforementioned problems, this application provides a printing consumable conveyor, including a discharge channel, at least two feed channels, a pushing device, and a cutting device. The at least two feed channels are respectively connected to the discharge channel. The pushing device is disposed on the feed channel and is used to drive the consumable in at least one feed channel forward into the discharge channel, or to drive the consumable in at least one feed channel backward. The cutting device is disposed on the discharge channel and is used to cut the consumable when the pushing device drives the consumable backward to a set position.

[0006] Another aspect of this application provides a 3D printer, including the printing filament conveyor as described above.

[0007] Beneficial effects

[0008] The printing consumable conveyor and 3D printer provided in the embodiments of the present invention, by setting a pushing device to drive the consumables in at least one feeding channel through the discharging channel and forward, or to drive the consumables in at least one feeding channel backward, can realize the discharge and retraction of at least one of at least two consumables, avoiding manual retraction operations and reducing manual workload. By setting the pushing device to move at least one of at least two consumables, when discharging again, it is possible to switch between consumables of different colors or materials, expanding the scope of use. It can also realize the forward or backward movement of the same type of consumables, thereby realizing continuous printing of the same type of consumables, avoiding frequent manual refilling after a single consumable is used up, and reducing manual workload. By setting up a cutting device, the end of the filament can be cut off during ejection, avoiding blockage and jamming caused by irregular consumption ends. Even when the filament is reused, the end of the filament will not have lumps formed by the high temperature of the print head. The filament will not block the print head or extruder of the 3D printer, and will not damage the 3D printer. At the same time, it eliminates the step of manually cutting the consumption end, reducing the amount of manual work and preventing blockage and jamming caused by human negligence. Attached Figure Description

[0009] Figure 1 This is a first-view perspective three-dimensional structural diagram of the printing consumable conveyor according to an embodiment of this application.

[0010] Figure 2 This is a two-dimensional structural diagram of the printing consumable conveyor from a second perspective according to an embodiment of this application;

[0011] Figure 3 This is an exploded view of the printing consumables conveyor according to an embodiment of this application;

[0012] Figure 4 This is a first-view cross-sectional schematic diagram of the printing consumable conveyor according to an embodiment of this application;

[0013] Figure 5 This is a cross-sectional schematic diagram from a second perspective of the printing consumables conveyor according to an embodiment of this application;

[0014] Figure 6 This is an explosion diagram of the propulsion device according to an embodiment of this application;

[0015] Figure 7 This is a cross-sectional schematic diagram of the pushing device in a first state according to an embodiment of this application;

[0016] Figure 8 This is a cross-sectional schematic diagram of the pushing device in a second state according to an embodiment of this application;

[0017] Figure 9This is a cross-sectional schematic diagram of the pushing device in a third state according to an embodiment of this application;

[0018] Figure 10 This is an exploded view of the pressing device according to an embodiment of this application;

[0019] Figure 11 This is a first three-dimensional structural diagram of the pressing device and the pressure relief device in an explosive state according to an embodiment of this application;

[0020] Figure 12 This is a second three-dimensional structural diagram of the pressing device and the pressure relief device in an explosive state according to an embodiment of this application;

[0021] Figure 13 This is an exploded view of the pusher component according to an embodiment of this application;

[0022] Figure 14 This is a side view of the pusher component according to an embodiment of this application;

[0023] Figure 15 This is an exploded view of the cutting device according to an embodiment of this application;

[0024] Figure 16 This is a schematic diagram of the structure of the first clamping member of the cutting device according to an embodiment of this application;

[0025] Figure 17 This is a schematic diagram of the rotating and cutting components of the consumables before cutting, according to an embodiment of this application.

[0026] Figure 18 This is a schematic diagram of the structure of the cutting device before cutting consumables according to an embodiment of this application;

[0027] Figure 19 This is a schematic diagram of the structure of the rotating part and the cut part after the consumable is cut according to an embodiment of this application;

[0028] Figure 20 This is a schematic diagram of the structure of the cutting device after the consumables are cut according to an embodiment of this application;

[0029] Figure 21 This is a cross-sectional schematic diagram of the cutting device when the consumables pass through the channel pulley according to an embodiment of this application;

[0030] Figure 22 This is a cross-sectional schematic diagram of the cutting device after the consumable end passes through the channel pulley in an embodiment of this application;

[0031] Figure 23 This is a cross-sectional schematic diagram of the printing consumables conveyor according to an embodiment of this application;

[0032] Figure 24This is a three-dimensional structural diagram of the base and cover plate of the printing consumable conveyor in an exploded state according to an embodiment of this application.

[0033] Figure 25 This is a first-view structural schematic diagram of the base and cover plate of the printing consumable conveyor according to an embodiment of this application;

[0034] Figure 26 This is a second-view structural schematic diagram of the base and cover plate of the printing consumable conveyor according to an embodiment of this application.

[0035] The reference numerals in the attached figures are as follows:

[0036] 1. Feeding channel; 2. Discharge channel; 3. Consumables; 41. Power component; 411. Power wheel; 412. First motor; 42. Pressing device; 421. Pressing component; 4211. Pressing roller; 4212. Pressing plate; 422. First elastic element; 43. Pressure relief device; 431. Second elastic element; 432. Pressure relief slider; 44. Pushing component; 441. Cam; 45. Rotating unit; 451. Drive shaft; 46. Feeding roller; 47. Feeding switch; 51. Drive Unit; 511, Driving component; 512, Rotating component; 5121, Recessed section; 5122, Smooth section; 52, Cutting component; 53, Clamping unit; 531, First clamping component; 532, Second clamping component; 533, Clamping space; 534, Tensioning elastic unit; 54, Mounting bracket; 55, Collection slot; 56, Channel pulley; 57, Cutting switch; 6, Base; 61, Mounting slot; 62, Clearance section; 7, Cover plate; 71, Mounting through hole; 8, Indicator light; 9, Print head. Detailed Implementation

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0041] See also Figures 1 to 26 As shown in the embodiment of this application, a printing consumable conveyor includes a discharge channel 2, at least two feed channels 1, a pushing device, and a cutting device. The at least two feed channels 1 are respectively connected to the discharge channel 2. The pushing device is disposed on the feed channel 1 and is used to drive the consumable 3 in at least one feed channel 1 through the discharge channel 2 and move forward, or drive the consumable 3 in at least one feed channel 1 backward. The cutting device is disposed on the discharge channel 2 and is used to cut the consumable 3 when the pushing device drives the consumable 3 backward to a set position.

[0042] By setting a pushing device to move at least one consumable 3 in the feeding channel 1 forward into the discharging channel 2 and out, or to move at least one consumable 3 in the feeding channel 1 backward, it is possible to discharge and discharge at least one of at least two consumables 3, avoiding manual discharge operations and reducing manual workload. By setting the pushing device to move at least one of at least two consumables 3, when discharging again, it is possible to switch between consumables 3 of different colors or materials, expanding the scope of use. It is also possible to move the same type of consumable 3 forward or backward, thereby achieving continuous printing of the same type of consumable 3, avoiding frequent manual refilling after a single consumable 3 is used up, and reducing manual workload. By setting up a cutting device, the end of the consumable 3 can be cut off during material ejection, avoiding blockage and jamming caused by the irregular consumption end of the consumable 3. Even when the consumable 3 is used again, the end of the consumable 3 will not have lumps formed by the high temperature melting and solidification of the print head 9. The consumable 3 will not cause blockage to the print head 9 or extruder of the 3D printer, and will not damage the 3D printer. At the same time, it eliminates the step of manually cutting the consumable end, reduces the amount of manual work, and prevents blockage and jamming caused by human negligence.

[0043] The feeding channel 1 is set up in a one-to-one correspondence with the consumable 3, that is, one feeding channel 1 corresponds to one consumable 3.

[0044] All feeding channels 1 are connected to the discharging channel 2. Consumables 3 in each feeding channel 1 can be driven forward by the pushing device to the discharging channel 2, and can also be driven backward by the pushing device to the feeding channel 1 corresponding to that consumable 3.

[0045] The setting position can be selected on the discharge channel 2, and the cutting device cuts off the consumable end of the consumable 3 in the discharge channel 2.

[0046] like Figures 4 to 14 As shown, the pushing device includes a power component 41, a pressing device 42, and a pressure relief device 43. The consumable 3 in the feeding channel 1 is located between the power component 41 and the pressing device 42. The pressing device 42 is used to clamp the consumable 3 with the power component 41 under the action of external force. The power component 41 is used to drive the clamped consumable 3 to move. The pressure relief device 43 is connected to the pressing device 42. When the pressure of the pressing device 42 on the consumable 3 is greater than a preset value, the pressure relief device 43 is used to make the pressing device 42 move away from the power component 41.

[0047] The pressure relief device 43 can reduce the force of the pressing device 42 and the power component 41 clamping the consumable 3, preventing the consumable 3 from being crushed. At the same time, it reduces the force on the power component 41 and the pressing device 42, increases the service life of the pushing device, and ensures the stability of the pushing device.

[0048] The structure of the power component 41 is not limited. The power component 41 may include devices such as motors, which can directly or indirectly drive the consumable 3 to move.

[0049] The number of pressing devices 42 is not limited. When multiple pressing devices 42 are included, the number of consumables 3 corresponds to the number of pressing devices 42, and the position of each pressing device 42 corresponds to a feeding channel 1, pressing down the consumables 3 in the corresponding feeding channel 1. In this embodiment, the pressing device 42 may include at least two, with each pressing device 42 corresponding to a consumable 3. At least two pressing devices 42 are connected to the pressure relief device 43, and the pressing device 42 can be selectively contacted with the consumable 3 so that the power component 41 and the selected pressing device 42 clamp the consumable 3. In this application, the pressing device 42 can be selectively contacted with the consumable 3, that is, one of the pressing devices 42 can be selected to contact the consumable 3 as needed.

[0050] The power component 41 can include two working states. When the pushing device is in the first working state, the power component 41 drives at least one consumable 3 in the feeding channel 1 forward into the discharging channel 2. When the pushing device is in the second working state, the power component 41 drives at least one consumable 3 in the feeding channel 1 backward. For example, the power component 41 can achieve forward and reverse rotation.

[0051] Specifically, for example, when switching between red and blue consumable 3 for printing, the pushing device of this application has two pressing devices 42 respectively corresponding to red and blue consumable 3. The red consumable 3 is selected for printing as needed. During switching, the red consumable 3 is retracted, and then the blue consumable 3 is pushed out for printing. In this application, when one type of consumable 3 is used up, the pushing device can also move the same type of consumable 3, thereby achieving continuous printing of the same type of consumable 3, avoiding frequent manual refilling after a single consumable 3 is used up, and reducing manual workload. For example, both pressing devices 42 correspond to the same consumable 3. When one consumable 3 is about to run out, it can be retracted, and then the other consumable 3 can be pushed out, achieving continuous printing of the same type of consumable 3.

[0052] The first working state is the feeding state of the pusher device, in which the pusher device drives the consumable 3 from the printing consumable conveyor to the print head 9. The second working state is the unloading state of the pusher device, in which the pusher device drives the consumable 3 back to the printing consumable conveyor.

[0053] When there are multiple pressing devices 42, the multiple pressing devices 42 are arranged in parallel, and the consumables 3 are arranged in correspondence with the pressing devices 42. Specifically, they can be arranged in a one-to-one correspondence, and each consumable 3 can be arranged in parallel.

[0054] The pressing devices 42 can be arranged in parallel to each other so that the consumables 3 can be fed or returned in the same direction.

[0055] Among them, the power component 41 provides power for the movement of the consumable 3, and the pressing device 42 clamps the consumable 3 between the power component 41 and the pressing device 42, and the movement of the consumable 3 is driven by the action of the power component 41.

[0056] Specifically, the power component 41 may include a power wheel 411 and a first motor 412. The power wheel 411 contacts the consumable 3, and the rotation of the power wheel 411 drives the consumable 3 to move. The power wheel 411 can be a roller, a drum, or multiple wheels that rotate synchronously and are separately arranged, as long as they can drive the consumable 3 to move. There is no limitation here. The motor shaft of the first motor 412 is connected to the power wheel 411 and is used to drive the power wheel 411 to rotate, thereby driving the consumable 3 to move.

[0057] Optionally, the number of power components 41 can be one or at least two, and the number of power components 41 is not limited here. When the number of power components 41 is at least two, one power component 41 is provided corresponding to at least one pressing device 42, and the other power component 41 is provided corresponding to at least one pressing device 42. For example, the power components 41 and the pressing devices 42 are provided in a one-to-one correspondence. In this embodiment, the number of power components 41 is one, that is, the power component 41 includes a power wheel 411 and a first motor 412. The length direction of the power wheel 411 is the same as the arrangement direction of the pressing devices 42. The clamped consumables 3 can be moved by the power wheel 411. The first motor 412 is axially connected to the power wheel 411 and is used to drive the power wheel 411 to rotate forward or reverse, thereby moving the consumables 3 along the first direction or along the second direction.

[0058] The pushing device also includes a pushing member 44, which can selectively drive the pressing device 42 to move, so that the corresponding pressing device 42 and the power member 41 clamp the consumable 3, or separate the consumable 3 from the pressing device 42. By setting the pushing member 44, it is possible to selectively clamp the required consumable 3, and to achieve selective printing of consumables 3 of different colors or materials. That is, as needed, the pushing member 44 can selectively contact the pressing device 42 and drive one of the pressing devices 42 to move toward the power member 41 and clamp the consumable 3.

[0059] The pusher 44 can be located on the side of the pressing device 42 away from the power member 41, thereby pushing the pressing device 42 to move toward the power member 41.

[0060] When the feeding operation begins, the pusher 44 moves the pressing device 42 toward the power unit 41 to clamp the corresponding consumable 3 between the power unit 41 and the pressing device 42, thereby causing the power unit 41 to move the consumable 3. When in the feeding or unloading operation, the pusher 44 keeps the pressing device 42 in the position clamping the consumable 3. When exiting the feeding or unloading operation, the pressing device 42 moves away from the consumable 3 following the pusher 44, disengaging the consumable 3 from the power unit 41, thus preventing the power unit 41 from moving the consumable 3.

[0061] The pressing device 42 includes a pressing element 421 and a first elastic element 422. The consumable 3 is located between the power element 41 and the pressing element 421. The first elastic element 422 is disposed on the side of the pressing element 421 close to the power element 41. The pressing element 421 is connected to the pressure relief device 43. When the pressing element 421 moves toward the power element 41, the first elastic element 422 applies an elastic force away from the power element 41 to the pressing element 421.

[0062] By setting the pressing component 421, the consumable 3 can be stably pressed. By setting the first elastic component 422, when the pushing component 44 moves away from the consumable 3, the pressing component 421 can be pushed to keep in contact with the pushing component 44 so that it moves away from the consumable 3 with the pushing component 44. Thus, the pressing component 421 is kept separate from the consumable 3 without moving the consumable 3.

[0063] Optionally, the first elastic element 422 is a spring, with its first end connected to or abutting against a mounting carrier that remains relatively stationary with respect to the first end of the spring. The second end of the spring is connected to or abutting against the side of the pressure element 421 near the power element 41. The mounting carrier simply provides fixed support for the first end of the spring and keeps it stationary; the mounting carrier is not limited in this respect.

[0064] The first elastic element 422 can be disposed opposite to the pusher 44. The first elastic element 422 is located on one side of the pressure member 421, and the pusher 44 is located on the other side of the pressure member 421.

[0065] The pressure relief device 43 can be located on the side of the pressing member 421 near the pushing member 44, or it can be located on the side of the pressing member 421 near the power member 41. In this embodiment, the pressure relief device 43 is located on the side of the pressing member 421 near the pushing member 44, that is, on the side of the pressing member 421 away from the power member 41, which makes the pressure of the pressing member 421 on the consumable 3 more stable.

[0066] The pressure relief device 43 includes a second elastic element 431 and a pressure relief slider 432. The pressure relief slider 432 is connected to the pressing device 42 and the second elastic element 431 respectively. The pressure relief slider 432 is located on the side of the second elastic element 431 facing the power element 41. The pressure relief slider 432 is limited to move in a direction intersecting the movement direction of the consumable 3. The second elastic element 431 applies an elastic force to the pressing device 42 towards the side where the power element 41 is located through the pressure relief slider 432.

[0067] By setting a second elastic element 431, a preset value can be set based on the elastic coefficient of the second elastic element 431. When the pressure of the pressing device 42 on the consumable 3 exceeds the preset value, the pressing device 42 pushes the pressure relief slider 432 to compress the second elastic element 431, that is, the pressing device 42 moves away from the consumable 3 to relieve pressure, thus avoiding excessive pressure on the consumable 3, which could damage the consumable 3, the power component 41, or the pressing device 42. By limiting the pressure relief slider 432 to move in a direction intersecting the movement direction of the consumable 3, the pressing device 42 can be stably pressed down, and the preset value can be kept stable, avoiding changes in the preset value due to different movement directions of the pressure relief slider 432.

[0068] The pressure relief slider 432 is connected to the pressure member 421 in the pressure device 42. The pressure relief slider 432 is rotatably mounted on the pressure member 421. Specifically, the pushing device also includes a connecting shaft (unlabeled) that passes through the pressure member 421. Both ends of the connecting shaft can be rotatably connected to one pressure relief slider 432, ensuring a stable connection between the pressure relief slider 432 and the pressure member 421 as the pressure relief slider 432 moves. It can be understood that the connecting shaft can also be rotatably connected to the pressure member 421.

[0069] The pressure relief slider 432 can be roughly rectangular, and the second elastic element 431 is connected to the outer wall of the pressure relief slider 432 on the side away from the consumable 3.

[0070] The second elastic element 431 can be a spring.

[0071] In this design, the first end of the second elastic element 431 is fixed to a mounting carrier, which remains relatively stationary with respect to the first end of the second elastic element 431. The second end of the second elastic element 431 is connected to a limiting slider. The mounting carrier provides fixed support for the first end of the second elastic element 431 and simply keeps the first end stationary; the mounting carrier is not limited in this regard. Specifically, when the pushing device is applied to a printing consumable conveyor, the mounting carrier can be the housing of the printing consumable conveyor.

[0072] The pressure relief slider 432 is slidably disposed within a slide rail of the mounting carrier, and the slide rail restricts the movement of the pressure relief slider 432 in a direction intersecting the movement direction of the consumable 3. Specifically, in this embodiment, the sliding direction of the pressure relief slider 432 is perpendicular to the movement direction of the consumable 3.

[0073] The pressing component 421 includes a pressing roller 4211 and a pressing plate 4212. The pressing roller 4211 is disposed on the pressing plate 4212 and is rotatably connected to the pressing plate 4212. The pressing roller 4211 is disposed opposite to the power component 41. The consumable 3 is located between the power component 41 and the pressing roller 4211. The pushing component 44 is disposed on the side of the pressing plate 4212 away from the pressing roller 4211.

[0074] The pressure plate 4212 includes a first end and a second end. A pusher 44 and a first elastic member 422 are disposed on the first end, and a pressure relief device 43 is disposed on the second end. Under the action of an external force, i.e., under the action of the pusher 44, the first end of the pressure plate 4212 causes the pressure roller 4211 and the power member 41 to clamp the consumable 3. By setting the pressure roller 4211, rolling friction can be formed between the pressure member 421 and the consumable 3, which improves the service life of the pressure member 421, while also ensuring that the consumable 3 is not scratched or damaged, and also ensuring that the consumable 3 is easier to drive.

[0075] The connecting shaft passes through the pressure plate 4212. One end of the connecting shaft is rotatably connected to the pressure relief slider 432 of one pressure relief device 43, and the other end of the connecting shaft is rotatably connected to the pressure relief slider 432 of another pressure relief device 43. It can be understood that when multiple pressure devices 42 are included, the connecting shaft can pass through the pressure plate 4212 of multiple pressure devices 42.

[0076] Among them, the pressure roller 4211 can be arranged opposite to the power component 41 in a direction perpendicular to the consumable 3 to ensure that the consumable 3 is clamped.

[0077] The pusher 44 can push the pressure plate 4212 toward the consumable 3, thereby causing the pressure roller 4211 and the power component 41 to clamp the consumable 3.

[0078] The pressure plate 4212 includes a flat section and a protruding section. The limiting slider, the first elastic element 422 and the pushing element 44 are in contact with the flat section. The protruding section is connected to the flat section and protrudes from the flat section toward the power element 41. The pressure roller 4211 is rotatably mounted on the protruding section, ensuring that the pressure roller 4211 can rotate stably while maintaining good contact with the power element 41.

[0079] Optionally, by positioning the pressure roller 4211 between the first and second ends, the pusher 44 and the first elastic member 422 on the first end, and the pressure relief device 43 on the second end, pressure can be applied simultaneously from both ends of the pressure plate 4212, ensuring a uniform distribution of downward pressure. When the downward pressure exceeds a preset value, the pusher 44 presses down from the first end, while the pressure plate 4212 at the second end causes the pressure relief device 43 to slide upward, thus stably relieving pressure and preventing damage to components and consumables 3.

[0080] The pusher 44 includes multiple cams 441, which are correspondingly arranged with the pressure plate 4212. When the cams 441 rotate to a set rotation position, they can drive the corresponding pressure plate 4212 to cooperate with the power component 41 to clamp the consumable 3. The pusher also includes a rotating unit 45, which includes a drive shaft 451. The cams 441 are mounted on the drive shaft 451 and are arranged axially along the drive shaft 451 and rotate synchronously. The protrusions of the multiple cams 441 are sequentially staggered by a preset angle along the rotation direction of the drive shaft 451. By staggering the protrusions of the cams 441 circumferentially along the drive shaft 451, the consumable 3 can be selectively moved, allowing the selection of a suitable consumable 3 according to requirements. By setting the protrusions of cam 441 to be staggered by a preset angle along the rotation direction of drive shaft 451, one of the cams 441 can drive the pressure member 421 to press down the consumable 3 every time drive shaft 451 rotates by a preset angle. By controlling the multiple of the preset angle of rotation of drive shaft 451, the consumable 3 can be selectively moved.

[0081] The rotational position is set at the point where the cam 441 just contacts the corresponding pressure plate 4212 and begins to move the corresponding pressure plate 4212 toward the consumable 3. The rotational position can be set by adjusting the size of the protrusion and the preset angle between adjacent cams 441.

[0082] The protrusion is the radially outward protruding part of the cam 441. When the protrusion rotates to contact the pressure plate 4212, it drives the pressure plate 4212 to move, so that the pressure roller 4211 and the power component 41 press the consumable 3 together. When the protrusion separates from the pressure plate 4212, the pressure roller 4211 disengages from the consumable 3.

[0083] All cams 441 are coaxially arranged. Viewed axially, the protrusions of each cam 441 are staggered by a preset angle along the rotation direction of the cam 441.

[0084] Optionally, the rotating unit 45 includes a second motor, and the drive shaft 451 is coaxially connected to the motor shaft of the second motor. The drive shaft 451 can also be the motor shaft of the second motor. The goal is to enable the drive shaft 451 to rotate, thereby driving the cam 441 to rotate.

[0085] The drive shaft 451 includes a first end and a second end. Among the multiple cams 441 on the drive shaft 451, the cam 441 closest to the first end is the first cam, and the cam 441 closest to the second end is the second cam. The minimum angle between the first cam and the second cam along the rotation direction of the drive shaft 451 is greater than a preset angle, which can form a blank area without the protrusions of the cams 441 in the circumferential direction of the pusher 44, that is, in the circumferential direction of the drive shaft 451. The blank area can serve as the starting point or ending point of the rotation of the pusher 44. When the blank area faces the pressure plate 4212, the protrusions of each cam 441 do not drive the pressure plate 4212 to the clamping position of the consumable 3. At this time, the consumable 3 can be manually placed between the cam 441 and the power member 41.

[0086] In this projection plane, a plane perpendicular to the central axis of the drive shaft 451 is used. In the projection of the first cam onto this plane, the centerline of the protrusion of the first cam is denoted as 'a'. In the projection of the second cam onto this plane, the centerline of the protrusion of the second cam is denoted as 'b'. The angle with the smallest difference between 'a' and 'b' is the smallest angle formed by the first and second cams along the rotation direction of the drive shaft 451. It can be understood that the preset angle is the angle formed by the centerlines of the two protrusions in the projections of adjacent cams 441 onto the projection plane.

[0087] In this embodiment, taking five cams 441 as an example, the protrusions of adjacent cams 441 are staggered by 60° along the rotation direction of the drive shaft 451, that is, the preset angle is 60°. The angle between the first cam and the second cam along the rotation direction of the drive shaft 451 is 120°. Taking the blank area formed by the first cam and the second cam in the circumferential direction of the drive shaft 451 as the starting point, the different consumables 3 can be switched every 60° of rotation of the drive shaft 451.

[0088] The printing consumable conveyor also includes a controller (not shown). The controller controls the pushing device and / or the cutting device. For example, the controller can control the pushing device to drive the consumables 3 in a preset sequence. The controller is electrically connected to the rotating unit 45. The controller can control the pushing device to move the consumables 3 sequentially in a preset order. That is, the controller can select the pressing device 42 in a preset order, causing the selected pressing device 42 to contact the consumables 3. This allows the same printing consumable conveyor to carry consumables 3 of different colors or materials for printing and to switch between them, expanding the range of applications. It can also move the same type of consumables 3, thus enabling continuous printing of the same type of consumables 3, avoiding frequent manual refilling after a single consumable 3 is used up, and reducing manual workload.

[0089] The controller can be a control chip, etc. The controller presets the order in which each consumable 3 is fed, i.e., the preset order, and controls the drive shaft 451 to rotate according to the preset order, so as to select the pressing device 42 according to the preset order, and drive the corresponding consumable 3 to print through the pressing device 42 and the power component 41.

[0090] To facilitate switching, the consumables 3 to be used can be arranged in a preset order. For example, if you want to print with red consumable 3 first and then blue consumable 3, you can place red consumable 3 on the position corresponding to the leftmost cam 441, and then place blue consumable 3 on the corresponding position of the second cam 441 from the left. Taking a preset angle of 60° as an example, rotating the drive shaft 451 60° will switch between red and blue consumables 3.

[0091] The driving device can also switch the interval settings of consumable 3.

[0092] Each feeding channel 1 is equipped with a feeding roller 46, and a feeding switch 47 is located on the side of the feeding roller 46 away from the feeding channel 1. The feeding switch 47 is electrically connected to the controller. When there is consumable at the position of the feeding channel 1 corresponding to the feeding switch 47, the feeding switch 47 can send a feeding signal to the controller.

[0093] The end of consumable 3 that first enters the feeding channel 1 is defined as the head end, and the end that enters the feeding channel 1 later as consumable 3 is defined as the tail end. It should be noted that the head end of consumable 3 will be consumed or cut off, but the end that has been consumed or cut off is still considered the head end.

[0094] When the pushing device is in the first working state, and the end of the consumable 3 passes through the feeding roller 46, the feeding roller 46 triggers the feeding switch 47 to change from a material supply signal to a material cut-off signal. After the controller receives the material cut-off signal, it can control the pushing device to enter the second working state.

[0095] When the pusher is in the second working state, and the head of the consumable 3 passes through the feed roller 46, the feed roller 46 triggers the feed switch 47 to change from a feed signal to a cut-off signal. After receiving the cut-off signal, the controller can switch the consumable 3 according to the preset sequence and then control the pusher to enter the first working state again, or it can control the pusher to stop running.

[0096] By setting up the feed roller 46 and the feed switch 47, in conjunction with the controller, the switching between the first working state and the second working state can be realized, thereby realizing the switching of consumables 3 of different colors or materials and the continuous printing of the same consumable 3. The switching between the first working state and the second working state can be realized immediately or by other combinations of states, which is not limited in this application.

[0097] Optionally, the feed roller 46 is located below the consumable 3, and the feed switch 47 is located below the feed roller 46. When the consumable 3 passes through the feed roller 46, the consumable 3 pushes the feed roller 46 downward, causing the feed roller 46 to contact and press the feed switch 47, thereby causing the feed switch 47 to issue a feed signal. When the pushing device is in the second working state and the head end of the consumable 3 has passed through the feed roller 46, or when the pushing device is in the first working state and the tail end has passed through the feed roller 46, the consumable 3 no longer applies pressure to the feed roller 46, and the feed roller 46 no longer applies pressure to the feed switch 47, triggering the feed switch 47 to change from a feed signal to a cut-off signal.

[0098] Optionally, an indicator light 8 is also provided on the housing. The indicator light 8 is electrically connected to the controller. The indicator light 8 is set one-to-one with the feeding channel 1. When the consumable 3 enters a feeding channel 1 and triggers the feeding switch 47 in the feeding channel 1, the controller controls the indicator light 8 corresponding to the feeding channel 1 to light up.

[0099] like Figures 15 to 23 As shown, the cutting device includes a drive unit 51 and a cutting component 52. The controller is electrically connected to the drive unit 51 to send control commands to the drive unit 51. The drive unit 51 and the cutting component 52 are connected to drive the cutting component 52 to move based on the control commands to cut the consumable 3.

[0100] The cutting device can cut off the end of the replaced consumable 3, avoiding the blockage and jamming caused by the irregular consumption end of the consumable 3. Even when the consumable 3 is used again, the end of the consumable 3 will not have lumps formed by the high temperature of the print head 9. The consumable 3 will not block the print head 9 or the extruder of the 3D printer, and will not damage the 3D printer. At the same time, it eliminates the step of manually cutting the consumable end, reduces the amount of manual work, and prevents blockage and jamming caused by human negligence.

[0101] The drive unit 51 is specifically used to drive the cutting component 52 to cut off the end of the consumable 3 when the consumable 3 is replaced and returns to a preset time or a preset position.

[0102] The specific location of the preset position is not limited and can be determined based on sensors, etc. The preset time can be the time required for consumable 3 to retract. After the preset time, consumable 3 stops moving and is cut off. The specific time of the preset time is also not limited, and can be 5 seconds, 6 seconds, etc.

[0103] The cutting device may further include a clamping unit 53. When cutting the consumable 3, the driving unit 51 drives the clamping unit 53 to clamp the consumable 3 and drives the cutting element 52 to cut the consumable 3. After the consumable 3 is cut, the driving unit 51 drives the clamping unit 53 to release the consumable 3 and drives the cutting element 52 away from the consumable 3. The cutting element 52 may be located on one side of the clamping unit 53. The consumable 3 can be clamped by the clamping unit 53, making it easier for the cutting element 52 to cut the consumable 3.

[0104] By setting up the drive unit 51 and the cutting component 52, the consumable 3 can be automatically cut. By setting up the clamping unit 53, the clamping unit 53 releases the consumable 3, and the cut consumable 3 consumption end can be discharged, avoiding the blockage and jamming problems caused by the irregular consumption end of the consumable 3. At the same time, it also eliminates the step of manually cutting the consumption end, reduces the amount of manual work, and prevents blockage and jamming caused by human negligence.

[0105] It is understood that the drive unit 51 is connected to the cutting component 52 and the clamping unit 53. The drive unit 51 can be connected to the cutting component 52 through other components, and the drive unit 51 can be connected to the clamping unit 53 through other components. The drive unit 51 may also include multiple sub-drive units, one sub-drive unit is connected to the cutting component 52, and one sub-drive unit is connected to the clamping unit 53.

[0106] It is understandable that when the drive unit 51 drives the clamping unit 53 to clamp the consumable 3 and drives the cutting component 52 to cut the consumable 3, the drive unit 51 can first drive the clamping unit 53 to clamp the consumable 3, and then drive the cutting component 52 to cut the consumable 3, or simultaneously drive the clamping unit 53 to clamp the consumable 3 and drive the cutting component 52 to cut the consumable 3. When the drive unit 51 drives the clamping unit 53 to release the consumable 3 and drives the cutting component 52 away from the consumable 3, the drive unit 51 can first drive the clamping unit 53 to release the consumable 3, and then drive the cutting component 52 away from the consumable 3, or first drive the cutting component 52 away from the consumable 3, and then drive the clamping unit 53 to release the consumable 3, or simultaneously drive the clamping unit 53 to release the consumable 3 and drive the cutting component 52 away from the consumable 3.

[0107] The driving unit 51 can be one or two. When there is one driving unit 51, it can simultaneously drive the cutting piece 52 and the clamping unit 53 to move. When there are two driving units 51, one driving unit 51 is connected to the cutting piece 52 to drive its movement, and the other driving unit 51 is connected to the clamping unit 53 to drive its movement. The number of driving units 51 is not limited in this application, as long as they can drive the cutting piece 52 and the clamping unit 53 to move and cooperate effectively.

[0108] Specifically, in this embodiment, the number of driving units 51 is described as one. The driving unit 51 is connected to both the cutting piece 52 and the clamping unit 53, and is used to drive the cutting piece 52 and the clamping unit 53 to move synchronously.

[0109] Optionally, the cutting element 52 is located on one side of the clamping unit 53, that is, the cutting element 52 and the clamping unit 53 are arranged adjacent to each other, and can be arranged with a gap, which facilitates the cutting of consumable 3, and at the same time can make the length of the cut consumable end shorter, thus avoiding waste of consumable 3.

[0110] Specifically, in this embodiment, when the printing consumables conveyor is in the unloading state, the movement direction of the consumables 3 in the printing consumables conveyor is defined as the first direction, and the cutting part 52 is located on the first direction side of the clamping unit 53, which can ensure that all the consumable ends are cut off and the cut consumable ends are discharged.

[0111] The type of the cutting component 52 is not limited. For example, the cutting component 52 can be a type of scissors or a cutting knife.

[0112] The clamping unit 53 can discharge the consumable end outside the movement path of the consumable 3 after cutting it, so as to avoid blocking the subsequent discharge of the consumable 3.

[0113] The drive unit 51 includes a drive component 511 and a rotating component 512. The drive component 511 is connected to the rotating component 512 and is used to drive the rotating component 512 to rotate. The cutting component 52 is connected to the rotating component 512 so that the cutting component 52 rotates with the rotating component 512. The cutting edge of the cutting component 52 protrudes from the rotating component 512 radially. By setting the rotating component 512, an installation position and running path are provided for the cutting component 52. The cutting edge of the cutting component 52 protrudes from the rotating component 512 radially, which ensures that the cutting component 52 can effectively cut the consumable 3. The drive component 511 can stably drive the rotating component 512 to rotate, providing power for cutting the consumable 3.

[0114] The consumable 3 is located radially outside the rotating part 512, and the length of the cutting part 52 extending out of the rotating part 512 is set to be able to completely cut the consumable 3.

[0115] The driving component 511 can be a motor, and the rotating component 512 is connected to the motor shaft and is coaxial with the motor shaft, so that the rotation of the motor shaft drives the rotating component 512 to rotate around its own central axis. The driving component 511 can also be a servo motor, etc.

[0116] Optionally, as one implementation, the cutting element 52 can be directly and fixedly connected to the rotating element 512, so that the rotating element 512 drives the cutting element 52 to rotate. As another implementation, the drive unit 51 further includes a connecting plate, on which the cutting element 52 is fixedly mounted. The connecting plate is sleeved on the motor shaft and coaxially arranged with the rotating element 512. The connecting plate can be connected to the rotating element 512, and a portion of the cutting element 52 is located between the connecting plate and the rotating element 512. This ensures that while the rotating element 512 drives the cutting element 52 to rotate, it also enhances the connection stability of the cutting element 52. Specifically, the connecting plate and the rotating element 512 are fixedly connected by screws. The cutting element 52 extends radially beyond the connecting plate and the rotating element 512.

[0117] The printing consumable conveyor includes a housing, and a pushing device and a cutting device can be housed within the housing. The housing includes a collection trough 55, the opening of which is positioned opposite to the clamping unit 53. By providing the collection trough 55, the cut-off consumable ends can be collected for unified recycling and processing, and the cut-off consumable ends can be prevented from affecting the operation of the device.

[0118] The collection slot 55 is located directly below the clamping unit 53. The cut-off consumable end that falls from the clamping space 533 falls into the collection slot 55 by its own gravity.

[0119] The housing comprises a first part and a second part, which are detachably connected. A collection trough 55 is formed on the first part. After the first part and the second part are detached, it is easy to clean the consumables 3 inside the collection trough 55. When the first part and the second part are assembled together, they form a complete housing, which can provide a certain degree of sealing protection for the components inside the housing and prevent external debris from entering the housing.

[0120] The inner wall of the housing is provided with a slide rail, and the pressure relief slider 432 is slidably disposed in the slide rail. The slide rail extends in a direction intersecting the movement direction of the consumable 3, so as to limit the pressure relief slider 432 to move in a direction intersecting the movement direction of the consumable 3.

[0121] The rotating member 512 includes a recessed section 5121 and a smooth section 5122, which are arranged circumferentially along the rotating member 512. The recessed section 5121 is recessed inward along the radial direction of the rotating member 512, and the smooth section 5122 protrudes outward along the radial direction of the rotating member 512. The clamping unit 53 includes a first clamping member 531 and a second clamping member 532, which are disposed opposite to each other. The first clamping member 531 has a first groove at its first end, and the second clamping member 532 has a first groove at its first end. The first end is provided with a second groove, which is used to engage with the second groove to form a clamping space 533. The second end of the first clamping member 531 is slidably disposed on the outer peripheral wall of the rotating member 512, and the second end of the second clamping member 532 is slidably disposed on the outer peripheral wall of the rotating member 512. The driving member 511 drives the rotating member 512 to rotate, which drives the second ends of the first clamping member 531 and the second ends of the second clamping member 532 to move towards each other or away from each other through the recessed section 5121 and the smooth section 5122, so as to clamp or release the consumable 3. Moving towards each other means that they are close to each other, and moving away from each other means that they are far apart. By providing the recessed section 5121 and the smooth section 5122 on the rotating member 512, and driving the first clamping member 531 and the second clamping member 532 to move through the recessed section 5121 and the smooth section 5122, the clamping or releasing of the consumable 3 is achieved. The structure is simple, stable, and highly reliable.

[0122] The first clamping member 531 is hinged at its middle portion to the mounting carrier, with the hinge point located between the first and second ends of the first clamping member 531. The second clamping member 532 is hinged at its middle portion to the mounting carrier, with the hinge point located between the first and second ends of the second clamping member 532. As the rotating member 512 rotates, the second ends of the first clamping member 531 and the second ends of the second clamping member 532 slide from the recessed section 5121 to the smooth section 5122. During this process, the distance between the second ends of the first clamping member 531 and the second clamping member 532 gradually increases because the middle portions of the first clamping member 531 and the second clamping member 532 are hinged to the mounting carrier. Therefore, the distance between the first ends of the first clamping member 531 and the first ends of the second clamping member 532 gradually decreases until they come into contact, thereby clamping the consumable 3 through the first and second grooves. As the rotating member 512 rotates, the second end of the first clamping member 531 and the second end of the second clamping member 532 slide from the smooth section 5122 to the recessed section 5121. During this process, the distance between the second end of the first clamping member 531 and the second end of the second clamping member 532 gradually decreases. This is because the middle part of the first clamping member 531 is hinged to the mounting carrier and the middle part of the second clamping member 532 is hinged to the mounting carrier. Therefore, the first end of the first clamping member 531 and the first end of the second clamping member 532 separate, and the distance between them gradually increases, thereby releasing the consumable 3.

[0123] Optionally, the first clamping member 531 and the second clamping member 532 have the same dimensions, and the first clamping member 531 and the second clamping member 532 are mirror images of each other.

[0124] Optionally, the first clamping member 531 and the second clamping member 532 are L-shaped. The first end of the first clamping member 531 and the first end of the second clamping member 532 extend towards each other. When they come into contact, the first groove and the second groove engage with each other to form a circular clamping space 533.

[0125] Optionally, the first and second grooves have the same dimensions and can both be semi-circular to form a regular clamping space 533. The cross-sectional area of ​​the clamping space 533 can be equal to or slightly smaller than the cross-sectional area of ​​the consumable 3 to ensure that the consumable 3 can be clamped. When the consumable 3 moves forward or backward, the first clamping member 531 and the second clamping member 532 will not clamp the consumable 3.

[0126] Optionally, the second end of the first clamping member 531 and the second end of the second clamping member 532 are in contact with the outer peripheral wall of the rotating member 512, fully connected to the outer peripheral wall, and can slide on the outer peripheral wall of the rotating member 512 when the rotating member 512 rotates.

[0127] The cutting device also includes a mounting frame 54, with a first clamping member 531 rotatably connected to the mounting frame 54 and a second clamping member 532 rotatably connected to the mounting frame 54; the cutting member 52 is provided corresponding to the recessed section 5121. By providing the mounting frame 54, a stable mounting position is provided for the first clamping member 531 and the second clamping member 532, ensuring that the first clamping member 531 and the second clamping member 532 can rotate stably. By providing the cutting member 52 corresponding to the recessed section 5121, the cutting member 52 can be linked with the first clamping member 531 and the second clamping member 532. When the cutting member 52 cuts the consumable 3, the first clamping member 531 and the second clamping member 532 clamp the consumable 3 to provide support for the consumable 3, preventing the consumable 3 from moving with the cutting member 52, which would result in the inability to effectively cut the consumable 3. After cutting, the first clamp 531 and the second clamp 532 release the consumable 3, thereby expelling the cut-off consumable end out of the movement path of the consumable 3, so as to avoid blocking the subsequent discharge of the consumable 3.

[0128] The cutting element 52 is provided corresponding to the recessed section 5121, that is, the cutting element 52 and the recessed section 5121 are arranged opposite to each other in the axial direction of the rotating element 512.

[0129] The mounting bracket 54 is the aforementioned mounting carrier, and it can be fixedly connected to the inner wall of the housing. The mounting bracket 54 can be a single unit, or it can include multiple sub-mounting brackets 54, so that the first clamping member 531 and the second clamping member 532 can be connected to the mounting bracket 54.

[0130] The mounting bracket 54 can be provided with a first rotating shaft and a second rotating shaft. A first clamping member 531 is rotatably connected to the mounting bracket 54 via the first rotating shaft, and a second clamping member 532 is rotatably connected to the mounting bracket 54 via the second rotating shaft. The first rotating shaft is located between the first end and the second end of the first clamping member 531; the second rotating shaft is located between the first end and the second end of the second clamping member 532. By providing the first and second rotating shafts, the first clamping member 531 and the second clamping member 532 are stably rotatably connected to the mounting bracket 54. Simultaneously, when the first end of the first clamping member 531 moves away from the first end of the second clamping member 532, the second end of the first clamping member 531 moves towards the second end of the second clamping member 532; and when the first end of the first clamping member 531 moves towards the first end of the second clamping member 532, the second end of the first clamping member 531 moves away from the second end of the second clamping member 532.

[0131] The first clamping member 531 and the second clamping member 532 are L-shaped. The first rotating shaft can be set at the inflection point of the first clamping member 531, and the second rotating shaft can be set at the inflection point of the second clamping member 532.

[0132] Optionally, the number of recessed segments 5121 and the number of smooth segments 5122 are even. The recessed segments 5121 and smooth segments 5122 are arranged at intervals along the circumference of the rotating member 512. The recessed segments 5121 are arranged one-to-one opposite each other along the radial direction of the rotating member 512, and the smooth segments 5122 are arranged one-to-one opposite each other along the radial direction of the rotating member 512. This ensures that the first clamping member 531 and the second clamping member 532 slide onto different smooth segments 5122 or recessed segments 5121 simultaneously, thereby ensuring that the first clamping member 531 and the second clamping member 532 move simultaneously to clamp or release the consumable 3. The driving member 511 drives the rotating member 512 and the cutting member 52 to rotate synchronously, and the cutting member 52 is set corresponding to the recessed segments 5121, thereby ensuring that the consumable 3 is released after being cut and clamped before being cut, thus ensuring the stability of the linkage.

[0133] Optionally, in this embodiment, there are two smooth segments 5122 and two recessed segments 5121. The two smooth segments 5122 occupy half of the outer circle of the rotating member 512, and the two recessed segments 5121 occupy half of the outer circle of the rotating member 512. That is, the arc of each smooth segment 5122 is π / 2, and the arc of each recessed segment 5121 is π / 2.

[0134] The clamping unit 53 further includes a tensioning elastic unit 534. One end of the tensioning elastic unit 534 is disposed on the second end of the first clamping member 531, and the other end of the tensioning elastic unit 534 is disposed on the second end of the second clamping member 532. The tensioning elastic unit 534 applies an elastic force toward the rotating member 512 to the first clamping member 531 and the second clamping member 532, so that the second ends of the first clamping member 531 and the second ends of the second clamping member 532 are in contact with the circumferential outer wall of the rotating member 512. By providing the tensioning elastic unit 534, it is ensured that the second ends of the first clamping member 531 and the second ends of the second clamping member 532 can be firmly abutted against the circumferential outer wall of the rotating member 512.

[0135] It can be understood that one end of the tensioning elastic unit 534 is located on the second end of the first clamping member 531, and the other end of the tensioning elastic unit 534 is located on the second end of the second clamping member 532. That is, the tensioning elastic unit 534 is closer to the second end of the first clamping member 531 than to the first end, and the tensioning elastic unit 534 is closer to the second end of the second clamping member 532 than to the first end.

[0136] Optionally, the elastic force applied by the tensioning elastic unit 534 to the second end of the first clamping member 531 and the second end of the second clamping member 532 is less than the thrust applied by the rotating member 512 to the second end of the first clamping member 531 and the second end of the second clamping member 532, so that the smooth section 5122 of the rotating member 512 can drive the first clamping member 531 and the second clamping member 532 to move.

[0137] Optionally, the tensioning elastic unit 534 is a spring.

[0138] Another aspect of this embodiment provides a printing consumable conveyor, including the cutting device as described above. The printing consumable conveyor also includes a discharge channel 2, on which the cutting device is disposed. A channel pulley 56 is also disposed on the discharge channel 2, and a cutting switch 57 is disposed on the side of the channel pulley 56 away from the discharge channel 2. The cutting switch 57 is electrically connected to a controller. When the consumable 3 passes through the channel pulley 56, the consumable 3 pushes the channel pulley 56, triggering the cutting switch 57 to issue a material feeding signal. When the printing consumable conveyor is in the unloading state, and the consumed end of the consumable 3 has passed through the channel pulley 56, the channel pulley 56 disengages from the cutting switch 57, triggering the cutting switch 57 to change from a material feeding signal to a material cutting signal, so that the controller controls the cutting device to cut the consumable 3. By setting the channel pulley 56 and the cutting switch 57, the cutting device ensures that it does not cut the consumable 3 when the printing consumable conveyor is discharging normally, based on the material feeding signal issued by the cutting switch 57. When the cutting switch 57 changes from a material feeding signal to a material cutting signal, the cutting device cuts the consumable 3, thereby ensuring the stability of normal material output and the accuracy of material cutting.

[0139] Optionally, the channel pulley 56 is located above the consumable 3, and the cutting switch 57 is located above the channel pulley 56. When the consumable 3 is being conveyed normally, the consumable 3 passes through the channel pulley 56, pushing the channel pulley 56 upwards, causing the channel pulley 56 to touch and squeeze the cutting switch 57. This causes the cutting switch 57 to send a material feeding signal, so that the cutting switch 57 controls the cutting device to stop operating, ensuring normal material feeding. When the printing consumable conveyor is in the unloading state, and the consumption end of the consumable 3 has passed through the channel pulley 56, the consumable 3 no longer applies a pushing force to the channel pulley 56, and the roller no longer applies pressure to the cutting switch 57. The roller can disengage from the cutting switch 57 under its own weight and the rebound force of the cutting switch 57, thereby triggering the cutting switch 57 to change from a material feeding signal to a material cutting signal. The cutting switch 57 then controls the cutting device to operate immediately to cut off the consumption end of the consumable 3.

[0140] The position of the discharge channel 2 corresponding to the channel pulley 56 is the set position, that is, the location of the channel pulley 56 in the discharge channel 2 is the set position.

[0141] The printing consumables conveyor also includes a base 6 and a cover plate 7. The base 6 and cover plate 7 are disposed inside the housing. The mounting bracket 54 can be connected to the housing or to the base 6 and cover plate 7. The end of the first elastic member 422 away from the pressure plate 4212 is disposed on the cover plate 7. The base 6 and cover plate 7 are connected. The feed channel 1 and the discharge channel 2 are opened on the first wall of the base 6. The cover plate 7 is disposed on the first wall to close the feed channel 1 and the discharge channel 2. The cover plate 7 is provided with a mounting through hole 71. The base 6 is provided with a mounting groove 61 so that the pushing device can drive the consumables in at least one feed channel to pass through the discharge channel and move forward, or drive the consumables 3 in at least one feed channel 1 to move backward. The pressure roller 4211 can pass through the mounting through hole 71 to clamp the consumables. The power wheel 411 is disposed in the mounting groove 61. The mounting through hole 71 is a through hole. Multiple mounting through holes 71 and mounting grooves 61 correspond to each other.

[0142] The base 6 provides opening positions for the feed channel 1 and the discharge channel 2, and the cover plate 7 and the base 6 provide installation positions for the mounting frame 54 and the first elastic element 422, ensuring the structural stability of the printing consumables conveyor.

[0143] The base 6 also has a clearance portion 62, on which the cutting device is fixed. The mounting bracket 54 can be fixedly connected to the clearance portion 62. The base 6 and the cover plate 7 form a feeding channel and a discharging channel, and provide a mounting position for the cutting device.

[0144] Another aspect of this embodiment provides a 3D printer including the printing filament conveyor as described above.

[0145] Example

[0146] like Figures 1 to 26 As shown, this embodiment provides a printing consumable conveyor, including a discharge channel 2, at least two feed channels 1, a pushing device, and a cutting device. The at least two feed channels 1 are respectively connected to the discharge channel 2. The pushing device is disposed on the feed channel 1 and is used to drive the consumable 3 in at least one feed channel 1 through the discharge channel 2 and move forward, or drive the consumable 3 in at least one feed channel 1 backward. The cutting device is disposed on the discharge channel 2 and is used to cut the consumable 3 when the pushing device drives the consumable 3 backward to a set position.

[0147] The pushing device includes a power component 41, a pressing device 42, and a pressure relief device 43. The consumable 3 is located between the power component 41 and the pressing device 42. The pressing device 42 is used to clamp the consumable 3 with the power component 41 under the action of external force. The power component 41 is used to drive the clamped consumable 3 to move. The pressure relief device 43 is connected to the pressing device 42. When the pressure of the pressing device 42 on the consumable 3 is greater than a preset value, the pressure relief device 43 is used to make the pressing device 42 move away from the power component 41.

[0148] The pressing device 42 includes a pressing component and a first elastic component 422. The consumable 3 is located between the power component 41 and the pressing component. The first elastic component 422 is disposed on the side of the pressing component closer to the power component 41. The pressing component is connected to the pressure relief device 43. When the pressing component moves toward the power component 41, the first elastic component 422 applies an elastic force away from the power component 41 to the pressing component. The pressing component includes a pressing roller 4211 and a pressing plate 4212. The pressing roller 4211 is disposed on the pressing plate 4212 and is disposed opposite to the power component 41. The consumable 3 is located between the power component 41 and the pressing roller 4211. The pressing plate 4212... The device includes a first end and a second end. A pressure relief device 43 is disposed on the second end. Under the action of external force, the first end of the pressure plate 4212 causes the pressure roller 4211 and the power component 41 to clamp the consumable 3. The pushing device also includes a connecting shaft that passes through the pressure plate 4212 and is connected to the pressure relief device 43. The pressure device 42 includes at least two devices. The number of consumables 3 corresponds to the number of pressure devices 42. The pressure devices 42 are arranged correspondingly to the consumables 3. At least two pressure devices 42 are connected to the pressure relief device 43. The pressure devices 42 can be selectively contacted with the consumables 3 so that the power component 41 and the selected pressure device 42 clamp the consumables 3.

[0149] The pressure relief device 43 includes a second elastic element 431 and a pressure relief slider 432. The pressure relief slider 432 is connected to the pressing element and the second elastic element 431 respectively. The pressure relief slider 432 is located on the side of the second elastic element 431 facing the power element 41. The pressure relief slider 432 is limited to move in a direction intersecting the movement direction of the consumable 3. The second elastic element 431 applies an elastic force to the pressing element towards the side where the power element 41 is located through the pressure relief slider 432.

[0150] The pushing device also includes a pushing member 44, which is disposed on the side of the pressure plate 4212 away from the pressure roller 4211. The pushing member 44 and the first elastic member 422 are disposed on the first end of the pressure plate 4212. The pushing member 44 can selectively drive the pressure device 42 to move so that the pressure device 42 and the power member 41 clamp the consumable 3, or separate the consumable 3 from the pressure device 42. The pushing member 44 includes a plurality of cams 441, which are correspondingly disposed with the pressure plate 4212. When the cam 441 rotates to a set rotation position, it can drive the corresponding pressure plate 4212 and the power member 41 to cooperate in clamping the consumable 3. The pushing device also includes a rotating unit 45, which includes a drive shaft 451. Cams 441 are mounted on the drive shaft 451. The cams 441 are arranged along the axial direction of the drive shaft 451 and rotate synchronously. The protrusions of the multiple cams 441 are arranged at a predetermined angle in sequence along the rotation direction of the drive shaft 451. The drive shaft 451 includes a first end and a second end. Among the multiple cams 441 on the drive shaft 451, the cam 441 closest to the first end is the first cam, and the cam 441 closest to the second end is the second cam. The minimum angle between the first cam and the second cam along the rotation direction of the drive shaft 451 is greater than the predetermined angle.

[0151] The printing consumable conveyor also includes a controller, and the cutting device includes a control drive unit and a cutting component 52. The controller is electrically connected to the drive unit to send control commands to the drive unit, and the drive unit is connected to the cutting component 52 to drive the cutting component 52 to move based on the control commands to cut the consumable 3.

[0152] Specifically, the drive unit is used to drive the cutting component 52 to cut off the end of the consumable 3 when it is replaced and the consumable 3 returns to a preset time or position. The cutting device also includes a clamping unit 53. When cutting the consumable 3, the drive unit drives the clamping unit 53 to clamp the consumable 3 and drives the cutting component 52 to cut the consumable 3. After the consumable 3 is cut off, the drive unit drives the clamping unit 53 to release the consumable 3 and drives the cutting component 52 to move away from the consumable 3. The drive unit includes a drive component 511 and a rotating component. 512, a driving member 511 is connected to the rotating member 512 to drive the rotating member 512 to rotate. A cutting member 52 is connected to the rotating member 512 so that the cutting member 52 rotates with the rotating member 512. The cutting edge of the cutting member 52 protrudes from the rotating member 512 radially. The rotating member 512 includes a recessed section 5121 and a smooth section 5122. The recessed section 5121 and the smooth section 5122 are arranged circumferentially along the rotating member 512. The recessed section 5121 is recessed inward along the radial direction of the rotating member 512, and the smooth section 5122 is arranged inward along the radial direction of the rotating member 512. The rotating member 512 protrudes radially outward; the cutting member 52 is located on one side of the clamping unit 53, which includes a first clamping member 531 and a second clamping member 532. The first clamping member 531 and the second clamping member 532 are disposed opposite to each other. The first end of the first clamping member 531 is provided with a first groove, and the first end of the second clamping member 532 is provided with a second groove. The first groove is used to engage with the second groove to form a clamping space 533; the second end of the first clamping member 531 is slidably disposed on the outer peripheral wall of the rotating member 512, and the second clamping member 532 is disposed on the outer peripheral wall of the rotating member 512. The second end of component 532 is slidably disposed on the outer peripheral wall of rotating component 512. Driving component 511 drives rotating component 512 to rotate, which is used to drive the second end of first clamping component 531 and the second end of second clamping component 532 to move towards or away from each other through recessed section 5121 and smooth section 5122, so as to clamp or release consumable 3; the cutting device also includes mounting frame 54, the first clamping component 531 is rotatably connected to mounting frame 54, and the second clamping component 532 is rotatably connected to mounting frame 54; cutting component 52 is disposed corresponding to recessed section 5121.

[0153] The clamping unit 53 further includes a tensioning elastic unit 534. One end of the tensioning elastic unit 534 is disposed on the second end of the first clamping member 531, and the other end of the tensioning elastic unit 534 is disposed on the second end of the second clamping member 532. The tensioning elastic unit 534 applies an elastic force toward the rotating member 512 to the first clamping member 531 and the second clamping member 532, so that the second ends of the first clamping member 531 and the second ends of the second clamping member 532 are attached to the circumferential outer wall of the rotating member 512. The mounting bracket 54 is provided with a protruding first rotating shaft and a second rotating shaft. The first clamping member 531 is rotatably connected to the mounting bracket 54 through the first rotating shaft, and the second clamping member 532 is rotatably connected to the mounting bracket 54 through the second rotating shaft. The mounting bracket 54 is rotatably connected; the first rotating shaft is located between the first end and the second end of the first clamping member 531; the second rotating shaft is located between the first end and the second end of the second clamping member 532; the number of recessed sections 5121 is even, the number of smooth sections 5122 is even, the recessed sections 5121 and smooth sections 5122 are arranged at intervals along the circumference of the rotating member 512, the recessed sections 5121 are arranged opposite each other along the radial direction of the rotating member 512, and the smooth sections 5122 are arranged opposite each other along the radial direction of the rotating member 512; the printing consumable conveyor includes a housing, the cutting device and the pushing device can be arranged inside the housing, the housing includes a collection groove 55, and the opening of the collection groove 55 is arranged opposite to the clamping unit 53.

[0154] The discharge channel 2 is equipped with a channel pulley 56, and a cutting switch 57 is located on the side of the channel pulley 56 away from the discharge channel 2. The cutting switch 57 is electrically connected to the controller. When the consumable 3 passes through the channel pulley 56, the consumable 3 pushes the channel pulley 56, triggering the cutting switch 57 to send a material feeding signal. When the printing consumable conveyor is in the material unloading state, and the consumption end of the consumable 3 passes through the channel pulley 56, the channel pulley 56 disengages from the cutting switch 57, triggering the cutting switch 57 to change from a material feeding signal to a material cutting signal, so that the controller controls the cutting device to cut the consumable 3.

[0155] In another aspect of this embodiment, a 3D printer is provided, including the printing filament conveyor as described above.

[0156] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0157] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A printing consumable conveyor, characterized in that, The device includes a discharge channel, at least two feed channels, a pushing device, and a cutting device. The at least two feed channels are respectively connected to the discharge channel. The pushing device is disposed on the feed channel and is used to drive the consumable in at least one feed channel through the discharge channel and move forward, or drive the consumable in at least one feed channel backward. The cutting device is disposed on the discharge channel and is used to cut the consumable when the pushing device drives the consumable backward to a set position. The pushing device includes a power component, a pressing device, and a pressure relief device. The consumable in the feeding channel is located between the power component and the pressing device. The pressing device is used to clamp the consumable with the power component under the action of external force. The power component is used to drive the clamped consumable to move. The pressure relief device is connected to the pressing device. When the pressure of the pressing device on the consumable is greater than a preset value, the pressure relief device is used to move the pressing device away from the power component.

2. The printing consumables conveyor according to claim 1, characterized in that, The pressing device includes a pressing element and a first elastic element. The consumable in the feeding channel is located between the power element and the pressing element. The first elastic element is disposed on the side of the pressing element close to the power element. The pressing element is connected to the pressure relief device. When the pressing element moves toward the power element, the first elastic element applies an elastic force away from the power element to the pressing element. The pressing component includes a pressing roller and a pressing plate. The pressing roller is disposed on the pressing plate and is disposed opposite to the power component. The consumable is located between the power component and the pressing roller. The pressure plate includes a first end and a second end, and the pressure relief device is disposed on the second end. Under the action of external force, the first end of the pressure plate causes the pressure roller to clamp the consumable with the power component. The pushing device further includes a connecting shaft that passes through the pressure plate and is connected to the pressure relief device; The pressing device includes at least two, the number of consumables corresponds to the number of pressing devices, the pressing devices are arranged corresponding to the consumables, at least two pressing devices are connected to the pressure relief device, and the pressing devices can be selectively contacted with the consumables so that the power component and the selected pressing device clamp the consumables.

3. The printing consumable conveyor according to claim 1, characterized in that, The pressure relief device includes a second elastic element and a pressure relief slider. The pressure relief slider is connected to the pressing device and the second elastic element respectively. The pressure relief slider is disposed on the side of the second elastic element facing the power element. The pressure relief slider is limited to move in a direction intersecting the movement direction of the consumable. The second elastic element applies an elastic force to the pressing device towards the side where the power element is located through the pressure relief slider.

4. The printing consumable conveyor according to claim 2, characterized in that, The pushing device further includes a pushing member, which is disposed on the side of the pressure plate away from the pressure roller. The pushing member and the first elastic member are disposed on the first end of the pressure plate. The pushing member can selectively drive the pressure device to move so that the pressure device and the power member clamp the consumable or separate the consumable from the pressure device. The pusher includes multiple cams, which are correspondingly arranged with the pressure plate. When the cam rotates to a set rotation position, it can drive the corresponding pressure plate to cooperate with the power component to clamp the consumable. The pushing device further includes a rotating unit, which includes a drive shaft. The cams are mounted on the drive shaft and are arranged along the axial direction of the drive shaft and rotate synchronously. The protrusions of the multiple cams are arranged at a predetermined angle in sequence along the rotation direction of the drive shaft. The drive shaft includes a first end and a second end. Among the plurality of cams on the drive shaft, the cam closest to the first end is the first cam, and the cam closest to the second end is the second cam. The minimum angle between the first cam and the second cam along the rotation direction of the drive shaft is greater than the preset angle.

5. The printing consumable conveyor according to claim 1, characterized in that, The printing consumable conveyor also includes a controller, and the cutting device includes a drive unit and a cutting component. The controller is electrically connected to the drive unit to send control commands to the drive unit, and the drive unit is connected to the cutting component to drive the cutting component to move based on the control commands to cut the consumable.

6. The printing consumable conveyor according to claim 5, characterized in that, The drive unit is specifically used to drive the cutting component to cut off the end of the consumable when the consumable is replaced and returned to a preset position after a preset time. The cutting device further includes a clamping unit. When cutting the consumable, the driving unit is used to drive the clamping unit to clamp the consumable and drive the cutting piece to cut the consumable. After the consumable is cut, the driving unit is used to drive the clamping unit to release the consumable and drive the cutting piece away from the consumable. The driving unit includes a driving component and a rotating component. The driving component is connected to the rotating component and is used to drive the rotating component to rotate. The cutting component is connected to the rotating component so that the cutting component rotates with the rotating component. The cutting edge of the cutting component protrudes from the rotating component along the radial direction of the rotating component. The rotating component includes a recessed section and a smooth section, the recessed section and the smooth section are arranged circumferentially along the rotating component, the recessed section is recessed inward along the radial direction of the rotating component, and the smooth section protrudes outward along the radial direction of the rotating component. The cutting element is located on one side of the clamping unit. The clamping unit includes a first clamping element and a second clamping element. The first clamping element and the second clamping element are disposed opposite to each other. The first end of the first clamping element is provided with a first groove, and the first end of the second clamping element is provided with a second groove. The first groove is used to engage with the second groove to form a clamping space. The second end of the first clamping member is slidably disposed on the outer peripheral wall of the rotating member, and the second end of the second clamping member is slidably disposed on the outer peripheral wall of the rotating member. The driving member drives the rotating member to rotate, and is used to drive the second end of the first clamping member and the second end of the second clamping member to move towards each other or away from each other through the recessed section and the smooth section, so as to clamp or release the consumable. The cutting device further includes a mounting frame, wherein the first clamping member is rotatably connected to the mounting frame, and the second clamping member is rotatably connected to the mounting frame; The cut piece is provided corresponding to the recessed section.

7. The printing consumable conveyor according to claim 6, characterized in that, The clamping unit further includes a tensioning elastic unit, one end of which is disposed on the second end of the first clamping member, and the other end of which is disposed on the second end of the second clamping member. The tensioning elastic unit applies an elastic force toward the rotating member to the first clamping member and the second clamping member, so that the second ends of the first clamping member and the second clamping member are attached to the circumferential outer wall of the rotating member. The mounting bracket is provided with a first rotating shaft and a second rotating shaft with protrusions; the first clamping member is rotatably connected to the mounting bracket through the first rotating shaft, and the second clamping member is rotatably connected to the mounting bracket through the second rotating shaft; The first rotating shaft is located between the first end and the second end of the first clamping member; The second pivot is located between the first end and the second end of the second clamping member; The number of recessed segments is even, the number of smooth segments is even, the recessed segments and the smooth segments are arranged at intervals along the circumference of the rotating component, the recessed segments are arranged opposite each other along the radial direction of the rotating component, and the smooth segments are arranged opposite each other along the radial direction of the rotating component. The printing consumables conveyor includes a housing, the cutting device and the pushing device are disposed inside the housing, the housing includes a collection groove, and the opening of the collection groove is disposed opposite to the clamping unit; The printing consumable conveyor also includes a base and a cover plate, which are disposed within the housing. The mounting bracket is connected to the base, and the base and cover plate are connected. The feeding channel and the discharging channel are formed on the first wall of the base. The cover plate covers the first wall to close the feeding channel and the discharging channel. The cover plate is provided with a mounting hole, and the base is provided with a mounting groove so that the pushing device can drive at least one consumable in the feeding channel through the discharging channel and move forward. The mounting hole and the mounting groove correspond to each other. The base is provided with a clearance portion, and the cutting device is disposed on the clearance portion.

8. The printing consumables conveyor according to claim 6, characterized in that, A channel pulley is provided on the discharge channel, and a cutting switch is provided on the side of the channel pulley away from the discharge channel. The cutting switch is electrically connected to the controller. When the consumable material passes through the channel pulley, the consumable material pushes the channel pulley, triggering the cutting switch to send a material feeding signal; When the printing consumable conveyor is in the unloading state, and the consumption end of the consumable passes through the channel pulley, the channel pulley disengages from the cutting switch, triggering the cutting switch to change from a material feeding signal to a material cutting signal, so that the controller controls the cutting device to cut the consumable.

9. A 3D printer, characterized in that, Includes the printing consumables conveyor as described in any one of claims 1-8.

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