CN117754869A

CN117754869A - Consumable rewinding method, consumable conveying system and 3D printer

Info

Publication number: CN117754869A
Application number: CN202410035743.6A
Authority: CN
Inventors: 朱再群
Original assignee: Shenzhen Chengdaqi Technology Co ltd
Current assignee: Shenzhen Chengdaqi Technology Co ltd
Priority date: 2024-01-09
Filing date: 2024-01-09
Publication date: 2024-03-26

Abstract

The application discloses a consumable rewinds method, consumable conveying system and 3D printer, and this method includes: controlling consumable movement in response to a consumable rewind instruction; and acquiring a feedback signal, and enabling the consumable to move to a rewinding state based on the feedback signal. The method and the device can realize automatic monitoring of consumable rewinding progress.

Description

Consumable rewinding method, consumable conveying system and 3D printer

Technical Field

The application relates to the technical field of three-dimensional forming, in particular to a consumable rewinding method, a consumable conveying system and a 3D printer.

Background

In the three-dimensional forming equipment, a material tray is placed in a material rack or a material box, and filament-shaped consumable materials of the material tray are introduced into an extrusion mechanism. In the printing process, the extrusion mechanism continuously extrudes the filamentous consumable, the consumable enters the printing head through the consumable transmission channel, and the printing head is used for melting the consumable and realizing three-dimensional printing by spraying layer by layer.

When the charging tray is placed in work or material rest or magazine, the consumptive material probably is in loose state, and unordered suspension of consumptive material leads to the consumptive material to drop easily and tie a knot, can't feed smoothly. In order to retract loose consumables, a technical scheme for driving a tray to rotate by using a driving piece to realize consumable rewinding is known in the prior art. However, the length of the loose consumable material cannot be determined, so that when the consumable material is rewound to be completed, a user needs to observe the state of the loose consumable material when the consumable material is rewound, and after the loose consumable material is rewound into a tangle bundle, the winding process is manually stopped, so that the consumable material is rewound to be insufficient in automation degree, and the use is inconvenient.

Disclosure of Invention

In view of this, the application provides a consumable rewinding method, a consumable conveying system and a 3D printer, and solves the problem that consumable rewinding process can not be obtained automatically.

According to one aspect of the present application, there is provided a consumable rewind method for a consumable delivery system, the consumable rewind method comprising:

controlling consumable movement in response to a consumable rewind instruction;

and acquiring a feedback signal, and enabling the consumable to move to a rewinding state based on the feedback signal.

According to a second aspect of the present invention, there is provided a consumable delivery system comprising:

a memory storing a program or instructions;

and the main controller realizes the step of the consumable rewinding method when the main controller executes the program or the instruction.

According to a third aspect of the present invention, there is provided a 3D printer comprising the consumable delivery system described above.

According to the consumable rewinding method, the consumable conveying system and the 3D printer, loose consumables are sequentially rewound on the tray step by driving the consumables to move, the loose consumables are gradually reduced until the loose consumables are reduced to be tight, at the moment, the consumables or the tray move and change under the action of pulling, the feedback signal changes, at the moment, the loose consumables can be determined to be in a tensioning state, then the consumable movement can be slowed down or stopped, automatic consumable rewinding is realized, whether loose consumables are rewound is automatically judged, the consumable rewinding process can be automatically performed, and observation by operators is not needed.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 shows a schematic flow chart of a consumable part rewinding method according to an embodiment of the present application;

fig. 2 is a schematic diagram of a scenario of a consumable rewind method provided in an embodiment of the present application during a first rewind process;

FIG. 3 is a schematic diagram of a scenario of a consumable rewind method according to an embodiment of the present application during a second rewind process

Fig. 4 is a schematic diagram of a scenario of a consumable rewind method provided in an embodiment of the present application in a third rewind process

Fig. 5 is a schematic diagram of a scenario of another consumable rewind method according to an embodiment of the present application during a first rewind process;

Fig. 6 is a schematic diagram illustrating a scenario of another consumable rewind method according to an embodiment of the present application during a second rewind process;

fig. 7 is a schematic diagram of a scenario of another consumable part rewinding method provided in an embodiment of the present application in a third rewinding process;

fig. 8 is a schematic diagram of a scenario of another consumable part rewinding method according to an embodiment of the present application during a fourth rewinding process.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The embodiment of the invention provides a consumable rewinding method which can be applied to a consumable conveying system. The consumable delivery system may be independent of the stereoscopic forming apparatus, e.g. the consumable delivery system includes a housing independent of the stereoscopic forming apparatus, the extrusion mechanism and the driving member are integrated on the housing, and the housing is provided with a receiving space, and the tray 100 is disposed in the receiving space. Or the extrusion mechanism may be integrated within the printhead. An extrusion mechanism is located between the tray 100 and the nozzles of the printhead, the extrusion mechanism being used to transfer the consumable 500 into the printhead. The consumable conveying system further comprises a detecting member, the detecting member is used for sensing the change of the consumable 500 or the tray 100, then a feedback signal is generated, the detecting member can be a driving member, various components different from the driving member, the consumable 500 or the tray 100 can be used in various modes, and the type of the generated feedback signal can be various. It will be appreciated that the above application scenario is only an example and is not intended to limit the embodiments.

In one embodiment, as shown in fig. 1, the consumable rewind method of the present invention may be implemented based on a consumable delivery system. At least the following steps S101 to S102 may be included.

S101, controlling the consumable 500 to move in response to the consumable rewinding instruction.

The consumable rewind instruction is an instruction issued in response to the requirement of consumable rewind. The requirement of consumable rewinding can be the first time place tray 100 in consumable conveying system when produce, like after first place tray 100, need draw forth consumable 500 by tray 100 to in leading-in extrusion mechanism and feed channel, and for the convenience is brought into consumable 500, will draw forth consumable 500 that exceeds the needs, then after consumable 500 is brought into extrusion mechanism, can appear unnecessary consumable 500 and be in the loose state, need rewinds. Or, the requirement of consumable rewinding can be generated after printing is finished, for example, in the printing process, the consumable 500 is fed and rewound through forward rotation and reverse rotation of the extrusion mechanism, so that the consumable 500 can be replaced, for example, color printing and automatic feeding can be realized, and loose consumable 500 can be caused due to the fact that the tray 100 does not rotate or is possibly asynchronous with the pushing-back speed of the extrusion mechanism during material returning; the consumable rewinds the demand also can be produced when consumable conveying system just starts, twines in order to guarantee that the consumable on the charging tray 100 is in the tight state of twining before the consumable is carried through the consumable, avoids influencing follow-up printing.

In an alternative embodiment, the consumable rewind instruction may be a user instruction, that is, a rewind instruction issued by a user, for example, after the user finishes introducing the consumable 500 into the extrusion mechanism, the rewind instruction is issued actively, and after receiving the rewind instruction, the consumable 500 is controlled to move. And/or the consumable rewind instruction may be a print end instruction, generated when the consumable is used up, for example, when the consumable of the current color is used up or the consumable of other colors needs to be replaced, or the model printing is completed, the consumable of the current use end may be recovered, and the controller executes the rewind program. And/or, the consumable rewind instruction can be a consumable access instruction, and the consumable access instruction can be triggered when the consumable is accessed to the consumable conveying system, for example, a user adds new consumable into the consumable conveying system, or the newly accessed consumable during material replacement. And/or the consumable rewinding instruction can be a starting initialization instruction, the initialization action is executed when the consumable conveying system is started every time, and the rewinding action is executed on each consumable contained on the consumable conveying system, so that each consumable is in a rewinding state, namely, the consumable is not loose.

Controlling the consumable 500 to move refers to controlling the consumable 500 to move in a direction of rewinding onto the tray 100. In the foregoing embodiment in which the consumable delivery system includes a driving member, the driving member may be controlled to drive the tray 100 to rotate in the consumable rewinding direction, and then drive the consumable 500 to rewind onto the tray 100. In a normal printing process, the tray 100 may actively rotate, for example, the driving member drives the tray 100 to actively rotate, or alternatively, the tray 100 is pulled by the consumable 500 to passively rotate to release the consumable 500, and the rotation direction is a direction for releasing the consumable 500, for example, a clockwise direction in fig. 2. The direction of rewinding the consumable 500 is opposite to the direction of releasing the consumable 500, so that the consumable 500 is rewound and gradually wound on the tray 100. The direction in which the consumable 500 is rewound is counterclockwise in fig. 2, i.e., the direction indicated by the arrow in fig. 2.

In response to the consumable rewind instruction, controlling the consumable 500 to move may be: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the stacked consumable 500 is rewound step by step.

S102, acquiring a feedback signal, and moving the consumable 500 to a rewinding state based on the feedback signal.

The feedback signal is used to indicate the current stress condition of the tray 100 or the consumable 500, the driving difficulty, the moving condition or the moving position of the tray 100. As shown in fig. 2, to initially load the tray 100 or when printing proceeds to a predetermined step, a portion of the consumable 500 is in a loose state and a rewind needs to be initiated. As shown in fig. 3, the loose consumable 500 between the tray 100 and the extrusion mechanism is rewound, the consumable 500 becomes taut, and the detecting member can be used to feedback the change of the acting force of the consumable 500 on the tray 100. Or, when the consumable 500 is continuously rewound after being in a tight state, the consumable at the back end of the original loose consumable conveying is pulled, and then the detecting piece can be used for detecting the moving state or position of the consumable at the back end of the original loose consumable conveying.

Because feedback signal can change after the consumptive material 500 becomes the state of tightening, realize carrying out the back of consumptive material 500 according to the atress condition of charging tray 100 or consumptive material 500, charging tray 100 drive degree of difficulty, mobile state or positional information and twine, perhaps stop the back of consumptive material 500 to realize the control of consumptive material 500 back twining progress. Acquiring a feedback signal, moving the consumable 500 to a rewind state based on the feedback signal may be: in the consumable rewinding process, according to the change of the feedback signal, judging whether the consumable has moved to a rewinding state, wherein the rewinding state corresponds to that all loose consumable is rewound on a material disc or most loose consumable is rewound on the material disc; when the consumable part is confirmed to be in the rewinding state, the driving piece can be controlled to stop driving the rotation of the tray 100, so that the rewinding movement of the consumable part is stopped.

According to the consumable rewinding method provided by the embodiment of the invention, the consumable is rotated by driving the material disc, so that loose consumable is sequentially rewound on the material disc gradually, the loose consumable is gradually reduced along with the rotation of the material disc until the loose consumable is reduced to be tightly stretched, at the moment, the consumable or the movement of the material disc is changed under the action of pulling, the feedback signal sent by the detection part is changed, the loose consumable can be determined to be in a tensioning state, the rotation of the material disc can be slowed down or stopped, automatic consumable rewinding is realized, and whether the loose consumable is rewound is finished is automatically judged, so that the consumable rewinding process can be automatically performed without observation of operators.

In an alternative embodiment, the detecting member may be a consumable detecting member 300, where the consumable detecting member 300 is configured to generate a corresponding feedback signal based on a movement state of the consumable 500, and the feedback signal includes a feedback signal of the consumable detecting member 300. The consumable detection piece 300 may be integrated on the housing of the consumable delivery system, or the consumable detection pieces 300 may be integrated inside the printhead, or the consumable detection piece 300 may be disposed in the consumable delivery channel between the consumable delivery system and the printhead. In the feeding direction of the extrusion mechanism, or in the feeding direction of the consumable 500 during printing, the consumable detection element 300 is located at the rear end of the extrusion mechanism, i.e. the consumable detection element 300 is located between the extrusion mechanism and the nozzle. During feeding of the consumable, i.e., delivery to the printhead, the consumable 500 will pass through the extrusion mechanism and then through the consumable detector 300. Thus, when the consumable 500 triggers the consumable detection element 300, the material returning of the consumable 500 is stopped, and the consumable 500 is still positioned in the extrusion mechanism and cannot be separated.

As shown in fig. 2, a portion of consumable 500 is in a loose state and requires a start-up rewind. As shown in fig. 3, the loose consumable 500 between the tray 100 and the extrusion mechanism is rewound, and the consumable 500 is in a tight state, before this state, the relative position between the consumable 500 and the consumable detection element 300 is not changed, or only slightly moves, but the consumable 500 still triggers the consumable detection element 300. While the loose portion of the consumable 500 is rewound onto the tray and continues to be rewound, the consumable 500 moves relative to the consumable detector 300, as shown by the arrow in fig. 3, and the end of the consumable 500 will gradually approach the consumable detector 300. That is, when loose consumable 500 is present, consumable rewind is initiated and the feedback signal does not change. Specifically, the consumable 500 is led out from the tray 100, passes through the extrusion mechanism, and is led into the feeding channel, the extrusion mechanism does not generate extrusion action on the consumable 500, and the consumable 500 can move relative to the extrusion mechanism. When the tray 100 is driven to rotate, the loose consumable 500 is pulled by the tray 100 to be rewound onto the tray 100, and the rewinding force of the loose consumable 500 is not larger than the clamping force of the consumable 500 in the extrusion mechanism before the extrusion mechanism and the tray 100, so that the consumable 500 at the conveying rear end of the extrusion mechanism does not move relative to the extrusion mechanism and the feeding channel, or only slightly moves. After the loose consumable 500 is rewound, the consumable 500 is tightened between the extrusion mechanism and the tray 100, and when the tray 100 continues to rotate, the rewinding force is greater than the clamping force, and the consumable 500 at the conveying rear end of the extrusion mechanism is further pulled and then moves relative to the extrusion mechanism and the feeding channel. The feedback signal will change when the consumable 500 moves or moves to a position relative to the consumable detector 300. Therefore, in step S102, specifically, when the feedback signal changes in advance, the driving member is controlled to stop driving the tray 100, that is, driving and stopping the tray 100 according to the feedback signal, so as to realize rewinding of the consumable 500, and control the moving state of the tray 100 according to the rewinding degree, so as to realize monitoring of rewinding.

The consumable detection element 300 may be of various types, and is intended to generate feedback when the state of the consumable 500 changes. The change of the state of the consumable 500 can be the existence of the consumable 500, the change of the speed of the consumable 500, the change of the tensile force received by the consumable 500, the feedback signal can be used for feeding back the existence of the consumable 500, the start of the movement of the consumable 500, and whether the tensile force received by the consumable 500 is increased/reduced/unchanged.

According to the trigger principle of the consumable detection element 300, the preset change of the feedback signal is also different, and in this embodiment, the motion state of the consumable 500 includes a position state, where the position state is used to characterize the position change of a part of the consumable 500 that triggers the consumable detection element 300. The following exemplifies three embodiments, and it will be understood that the preset variations of the feedback signal are not limited to the following three cases:

in a first alternative embodiment, the consumable detection element 300 is configured to generate a feedback signal when the consumable 500 is contacted, where the feedback signal includes a signal generated by the consumable detection element based on the positional state of the consumable; the position state includes a state where the consumable is in contact with the consumable detection element and a state where the consumable is out of contact with the consumable detection element, and in this embodiment, feedback from the consumable detection element 300 corresponds to the state where the consumable is in contact with the consumable detection element. When the feedback signal changes in advance, the moving of the consumable 500 is stopped, including: when the feedback signal disappears, the movement of the consumable 500 is stopped. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the piled consumable is rewound step by step. In the process of rewinding the consumable, the consumable is determined to be separated from the consumable detection element when the feedback signal disappears, and then the consumable is determined to be moved to a rewinding state (i.e. all or part of loose consumable is rewound onto the tray), and the driving element is controlled to stop driving the tray 100 to rotate.

The consumable detection piece 300 can be a material breakage detector, such as a touch sensor, the consumable detection piece 300 comprises a spring contact and an electric contact plate, the spring contact protrudes out of the inner wall of a conduction channel of the consumable 500, the conduction channel can be a consumable feeding channel formed in a printing head, or a limiting block can be independently arranged, and the conduction channel is formed in the limiting block. When the consumable 500 is inserted into the conducting channel, the elastic contact is extruded, so that the elastic contact is electrically connected with the electrical contact plate, and then a feedback signal is generated, namely when the feedback signal is received, the consumable 500 is indicated to be inserted in place, and when the consumable 500 is not inserted in place, the elastic contact is sprung and is separated from electrical contact with the electrical contact plate, and then the feedback signal disappears.

In this embodiment, when the consumable 500 starts to move relative to the consumable detection element 300, the signal of the consumable detection element 300 will not change, and then the consumable 500 continues to be rewound until, as shown in fig. 4, when the end of the consumable 500 is separated from the consumable detection element 300, the feedback signal will disappear, because the consumable 500 at the delivery rear end of the extrusion mechanism is pulled to move to be separated from the consumable detection element 300 after the loose part of the consumable 500 is rewound onto the tray 100, at this time, it can be determined that the loose part of the consumable 500 is rewound in place, and the next operations such as printing can be performed, and then the driving element is controlled to stop driving the tray 100.

In a second alternative embodiment, the consumable detection element 300 is configured to generate a feedback signal when the consumable 500 is detached, where the feedback signal includes a signal generated by the consumable detection element based on a position state of the consumable, the position state includes a contact state and a detachment state of the consumable with the consumable detection element, and the feedback signal in this embodiment corresponds to the detachment state of the consumable with the consumable detection element. When the feedback signal changes in advance, the moving of the consumable 500 is stopped, including: when the feedback signal is received, the movement of the consumable 500 is stopped. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the piled consumable is rewound step by step. In the consumable rewinding process, waiting for a feedback signal, when receiving the feedback signal, judging that the consumable breaks away from the consumable detection piece, indicating that the consumable 500 of the loose part is rewound onto the material tray, and pulling the consumable 500 positioned at the conveying rear end of the extrusion mechanism to move to break away from the consumable detection piece 300, so as to confirm that the consumable 500 moves to a rewinding state, and further controlling the driving piece to stop driving the rotation of the material tray 100.

The consumable detection piece 300 may be a material breaking detector, such as a photoelectric sensor, where the consumable detection piece 300 includes an optical signal generating piece and an optical signal receiving piece, where the optical signal generating piece and the optical signal receiving piece are relatively disposed on opposite sides of a conducting channel of the consumable 500, when the consumable 500 is inserted into the conducting channel, an optical signal is blocked, so that the optical signal receiver cannot receive the optical signal, and then the feedback signal disappears, that is, when the feedback signal cannot be received, the consumable 500 is illustrated to be inserted in place. And when the consumable 500 is not inserted in place, the optical signal receiver may receive the optical signal and then be able to receive the feedback signal.

In this embodiment, when the consumable 500 starts to move relative to the consumable detection element 300, the consumable detection element 300 still does not send a feedback signal, and then the consumable 500 continues to be rewound until, as shown in fig. 3, when the end of the consumable 500 is separated from the consumable detection element 300, the consumable detection element 300 will generate the feedback signal, at this time, it can be determined that the loose portion of the consumable 500 is rewound in place, and the next operations such as printing can be performed, and then the driving element is controlled to stop driving the tray 100.

In a third alternative embodiment, the consumable detection element 300 is configured to generate an intermittent feedback signal when the consumable 500 moves, where the movement state of the consumable includes a speed state, and the feedback signal includes a signal generated by the consumable detection element based on the speed state of the consumable, that is, the feedback signal may represent the movement speed of a portion of the consumable that triggers the consumable detection element 300. When the feedback signal changes in advance, the moving of the consumable 500 is stopped, including: monitoring a feedback signal of the consumable detection piece 300, and identifying whether the feedback signal triggers a first preset condition; when the frequency of the feedback signal is not less than the preset frequency, the feedback signal is judged to trigger a first preset condition, and the consumable 500 is controlled to stop moving. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the stacked consumable 500 is rewound step by step. In the process of rewinding the consumable 500, the frequency of the feedback signal is calculated, when the frequency of the feedback signal is not less than the preset frequency, the movement speed of the consumable is judged to trigger a first preset condition, for example, the movement speed of the consumable part detecting part is continuously driven or the consumable part detecting part is triggered to exceed a threshold value, and then the consumable part is judged to move to a rewinding state, so that the driving part can be controlled to stop driving the rotation of the material tray 100.

Consumable detection piece 300 can include putty detector, and putty detector produces the feedback signal of corresponding frequency according to the speed when the consumable moves, like the elastic contact, has seted up the opening on the elastic contact, adopts photoelectric sensor to correspond the opening of elastic contact, and the elastic contact salient in the inner wall of the conduction channel of consumable 500, and can rotate. When the consumable 500 is inserted into the conduction channel, the elastic contact is extruded, and when the consumable 500 is not moved, the photoelectric sensor is aligned to the gap or between the gaps, and then the photoelectric sensor may continuously generate feedback or continuously does not generate feedback, and the consumable 500 is judged to be not moved at the moment. When the consumable 500 moves, the elastic contact is driven by the consumable 500 to rotate, and then the notch intermittently passes through the photoelectric sensor, so that the photoelectric sensor sends out intermittent feedback signals, the consumable 500 can be judged to move, and the moving speed of the consumable 500 can be determined through the generation frequency of the feedback signals. When the frequency of the feedback signal is not less than the preset frequency, the consumable 500 indicating the loose part is rewound onto the tray 100, and the consumable 500 at the rear end of the delivery of the extrusion mechanism is pulled to move, so that the frequency of the feedback signal is not less than the preset frequency, and the consumable 500 is confirmed to move to a rewinding state, and is fully wound or partially wound and not less than the tightening state shown in fig. 3, and the next operations such as printing can be performed, and then the driving member is controlled to stop driving the tray 100.

In a third alternative embodiment, the feedback signal from the consumable detection piece 300 may be due to a vibration or a momentary pull generated during the rewinding of the consumable 500 that causes a relative movement between the consumable 500 and the consumable detection piece 300. In order to make the detection result more accurate, in an alternative embodiment, when the frequency of the feedback signal is not less than the preset frequency, the step of stopping moving the consumable 500 specifically includes: starting timing when the frequency of the feedback signal is not less than the preset frequency, acquiring the duration time of the frequency of the feedback signal not less than the preset frequency, and controlling the driving piece to stop driving the tray 100 if the duration time is not less than the first preset time. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the stacked consumable 500 is rewound step by step. In the process of rewinding the consumable 500, calculating the frequency of a feedback signal, and starting timing when the frequency of the feedback signal is not less than a preset frequency, if the duration time of the frequency of the feedback signal is not less than the preset frequency reaches a first preset time, controlling the driving piece to stop driving the rotation of the tray 100; if the duration of the frequency of the feedback signal is not less than the preset frequency and does not reach the first preset time, the timing is cleared, the driving part is continuously controlled to drive the tray 100 to rotate, the frequency of the feedback signal is calculated, and whether the frequency of the feedback signal is not less than the preset frequency is judged.

The first preset time may be 2 seconds, 3 seconds, etc., and may be determined according to a rotational speed of the tray 100 when the consumable 500 is rewound. If the frequency of the feedback signal is not less than the preset frequency continuously within the first preset time, it is proved that the consumable 500 is continuously moved by the rewinding of the tray 100, but not the instantaneous movement caused by vibration or the like, and then the driving of the tray 100 can be stopped to complete the rewinding of the consumable 500 when the frequency of the feedback signal is not less than the preset frequency for not less than the first preset time.

In an alternative embodiment, the consumable delivery system further comprises a prompting device. After the control driving part stops driving the material tray, the control prompting device is further included to send out prompting information to inform the user that the consumable 500 is completed after rewinding, and the next operation can be performed.

The consumable delivery system may include only a single consumable detector 300, such as any of the consumable detectors 300 of the previous embodiments. Alternatively, as shown in fig. 5 to 8, the detecting member includes at least two consumable detecting members 300, and the two consumable detecting members 300 may be consumable detecting members 300 of the same detecting principle or consumable detecting members 300 of different detecting principles. The two consumable detection pieces 300 are arranged at intervals in the advancing direction of the conveying path of the consumable 500, namely in the conveying direction from the consumable conveying system to the printing head, so that the problems of signal misjudgment and the like can be avoided.

In an alternative embodiment, the number of consumable detection elements is two, namely the first consumable detection element 310 and the second consumable detection element 320, and the feedback signal includes a first feedback signal of the first consumable detection element 310 and a second feedback signal of the second consumable detection element 320. In the feeding direction of the extrusion mechanism, the second consumable detection element 320 is located at the rear end of the extrusion mechanism, and the first consumable detection element 310 is located at the rear end of the second consumable detection element 320.

In an alternative embodiment, the step of moving the consumable to the rewind state based on the feedback signal comprises: based on the signal change between the first feedback signal and the second feedback signal, the consumable is moved to a rewind state. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the piled consumable is rewound step by step. In the consumable rewinding process, a first feedback signal and a second feedback signal are obtained, and when the first feedback signal and the second feedback signal are both subjected to preset changes, the driving piece is controlled to stop driving the rotation of the tray 100.

By adopting the first consumable detection piece 310 and the second consumable detection piece 320, misjudgment of consumable rollback process can be avoided, and monitoring of consumable rollback process can be more accurate.

The first consumable detecting part 310 and the second consumable detecting part 320 may be any of the foregoing consumable detecting parts, for example, the first consumable detecting part 310 and the second consumable detecting part 320 are both configured to generate feedback signals when contacting the consumable 500, for example, the first consumable detecting part 310 and the second consumable detecting part 320 are both touch sensors. The first consumable detecting member 310 and the second consumable detecting member 320 are both touch sensors. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the piled consumable is rewound step by step. In the consumable rewinding process, a first feedback signal and a second feedback signal are acquired, and when the first feedback signal and the second feedback signal are both disappeared, the driving piece is controlled to stop driving the rotation of the tray 100.

During the rewinding process of the consumable 500, since the first consumable detecting member 310 is located at the feeding rear end of the feeding direction of the second consumable detecting member 320, that is, the second consumable detecting member 320 is closer to the tray 10. In the process of rewinding the consumable 500, the end of the consumable 500 will pass through and separate from the first consumable detecting member 310, the first feedback signal of the first consumable detecting member 310 will disappear, at this time, the second consumable detecting member 320 is still in contact with the consumable 500 to generate the second feedback signal, the consumable 500 continues to be rewound, and then the end of the consumable 500 will pass through and separate from the second consumable detecting member 320, and the second feedback signal of the second consumable detecting member 320 will disappear.

As shown in fig. 5, the consumable 500 is loosened between the extruding mechanism and the tray 100, and after driving the tray 100 to rotate for a certain period of time, the loosened consumable 500 is wound back, and the consumable 500 is tightened between the extruding mechanism and the tray 100, as shown in fig. 6. Continuing to rewind the consumable 500, the consumable 500 begins to move relative to the first consumable detection piece 310 and the second consumable detection piece 320 in the direction indicated by the arrows in FIG. 6. The signals of the first consumable detecting member 310 and the second consumable detecting member 320 are not changed, and then the consumable 500 continues to be rewound until, as shown in fig. 7, when the end of the consumable 500 is separated from the first consumable detecting member 310, the first feedback signal is disappeared, and at this time, it may be that the consumable 500 is rewound to be separated from the first consumable detecting member 310, but in some cases, the disappearance of the first feedback signal may be caused by vibration or a fault of the first consumable detecting member 310. Therefore, after the first feedback signal disappears, the rewinding of the consumable 500 is continued, and when the end of the consumable 500 is separated from the second consumable detecting element 320, as shown in fig. 8, the second feedback signal will disappear, and at this time, it can be determined that the rewinding of the consumable 500 is completed, and the driving element is controlled to stop driving the tray 100.

In an alternative embodiment, the consumable 500 is moved to the rewind state based on the first feedback signal and the second feedback signal, specifically comprising: and starting timing when the first feedback signal is subjected to preset change. And in the second preset time, if the second feedback signal is subjected to preset change, controlling the driving piece to stop driving the material tray, and if the second feedback signal is not subjected to preset change, generating alarm information. If the first consumable detecting member 310 and the second consumable detecting member 320 are both touch sensors, the consumable rewinding method includes: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the stacked consumable 500 is rewound step by step. In the process of winding the consumable 500, a first feedback signal and a second feedback signal are acquired, when the first feedback signal disappears, timing is started, if the second feedback signal disappears in a second preset time, the driving part is controlled to stop driving the tray 100, and if the second feedback signal does not disappear in the second preset time, the first consumable detecting part 310 is judged to be faulty, and an alarm operation can be performed.

In an embodiment where the first consumable detection element 310 and the second consumable detection element 320 are both configured to generate a feedback signal when the consumable 500 is detached, the consumable rewind method includes: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the stacked consumable 500 is rewound step by step. In the process of winding the consumable 500, a first feedback signal and a second feedback signal are acquired, timing is started when the first feedback signal is received, if the second feedback signal is received in a second preset time, the driving piece is controlled to stop driving the material tray, and if the second feedback signal is not received in the second preset time, the first consumable detecting piece 310 is judged to be faulty, and alarm operation can be performed.

In some embodiments, the first feedback signal and the second feedback signal may be received simultaneously, and the alarm information may be generated by multiple reasons, such as mechanical vibration or jamming of the first consumable detection element 310 and the second consumable detection element 320. The alarm information can be prompted by the prompting device in the previous embodiment. For example, the alarm information can be audible and visual alarm information or a prompt screen on a control screen.

Or in an embodiment where the first and second consumable detection pieces 310 and 320 are both generating intermittent feedback signals when the consumable 500 is moved, the second preset time should be 0 since the movement of the consumable 500 relative to the first and second consumable detection pieces 310 and 320 is synchronized. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, the driving piece is controlled to drive the material tray 100 to rotate in the consumable rewind direction, so that the stacked consumable 500 is rewound step by step. In the process of rewinding the consumable 500, when the frequency of the first feedback signal is not less than the preset frequency, judging whether the frequency of the second feedback signal is not less than the preset frequency, starting timing if the frequency of the second feedback signal is not less than the preset frequency, and controlling the driving piece to stop driving the rotation of the tray 100 if the duration time of the frequency of the first feedback signal not less than the preset frequency reaches the first preset time; if the duration of the first feedback signal is not less than the preset frequency and does not reach the first preset time, continuously controlling the driving element to drive the tray 100 to rotate, repeatedly calculating the frequency of the first feedback signal, and judging whether the frequency of the first feedback signal is not less than the preset frequency; if the frequency of the first feedback signal is not less than the preset frequency, the frequency of the second feedback signal is less than or equal to the preset frequency, and alarm information is generated. If the frequency of the second feedback signal is not less than the preset frequency, but the frequency of the first feedback signal is less than or equal to the preset frequency, it is possible that the end of the consumable 500 has passed through the first consumable detecting component 310, and it can be directly determined that the frequency of the second feedback signal is not less than the duration of the preset frequency, so that the driving component is controlled to stop driving the rotation of the tray 100 when the first preset time is reached.

In addition, in other embodiments, there may be a third consumable detection element, a fourth consumable detection element, and so on, due to the different configurations of the consumable delivery systems.

In one embodiment, controlling the movement of the consumable 500 includes controlling the movement of the consumable 500 in a consumable rewind direction, the consumable rewind method further including, prior to controlling the movement of the consumable 500: and acquiring a feedback signal, judging whether the feedback signal meets a second preset condition, if not, controlling the consumable 500 to move in the opposite direction of the rewinding direction, and enabling the consumable 500 to move to the sensing state of the feedback signal to change based on the feedback signal.

When the material tray 100 is installed, the consumable 500 is inserted into the extrusion mechanism and the consumable channel by a user, however, the insertion degree may be different, for example, the consumable 500 may be inserted into the extrusion mechanism and not reach the position of the consumable detection piece 300, in order to realize the rewinding of the consumable 500 based on the feedback signal of the consumable detection piece 300, the feeding of the consumable 500 is performed through the extrusion mechanism, so that the sensing state of the consumable 500 when moving to trigger the feedback signal of the consumable detection piece 300 changes, for example, the feedback signal changes from present to vanish, or the feedback signal changes from vanish to present, or the frequency of the feedback signal changes from the first frequency to the second frequency (the first frequency may be greater than the second frequency or the first frequency may be less than the second frequency), and then the consumable 500 is rewound. Alternatively, the consumable 500 may be inserted into the extrusion mechanism and into a position that triggers the consumable detector 300, at which point the rewinding of the consumable 500 may be performed directly.

The consumable rewinding method comprises a feeding stage and a rewinding stage, wherein the rewinding stage comprises the following steps: the consumable 500 is controlled to move in the consumable rewind direction, a feedback signal is obtained, and the consumable 500 is moved to a rewind state based on the feedback signal. Reference is made to the previous embodiments for specific examples of the rewind phase for different consumable detection pieces 300. The feeding stage comprises the following steps: the consumable 500 is controlled to move in the opposite direction to the rewind direction, a feedback signal is obtained, and the consumable 500 is moved to a feed state based on the feedback signal. And responding to the consumable rewinding instruction, acquiring a feedback signal, judging whether the feedback signal meets a second preset condition, if yes, directly executing the rewinding stage, if not, executing the feeding stage, and executing the rewinding stage after the consumable 500 moves to the feeding state.

According to the different types of the consumable detection element 300, the second preset condition is also different, for example, in one embodiment, the consumable detection element 300 is configured to generate a feedback signal when contacting the consumable 500, and determine whether the feedback signal exists when receiving a consumable rewinding instruction or when the program executes to the consumable rewinding program, if so, directly execute the rewinding stage. If there is no feedback signal, the feeding stage is performed first, and the feeding stage includes controlling the extrusion mechanism to extrude the consumable 500 in the opposite direction of the consumable rewinding direction, that is, feeding the consumable 500, and when the feedback signal is received, indicating that the consumable 500 has triggered the consumable detecting member 300, then stopping feeding the consumable 500, and then performing the aforementioned rewinding stage. The consumable detection element 300 may also generate a feedback signal when the consumable 500 is detached, which is not described herein.

It should be noted that, in the embodiment where the consumable detection piece 300 includes the first consumable detection piece 310 and the second consumable detection piece 320, or includes more consumable detection pieces, the consumable rewinding method further includes, before controlling the movement of the consumable: and acquiring a first feedback signal and a second feedback signal, judging whether the first feedback signal and the second feedback signal meet a second preset condition, if not, controlling the consumable 500 to move in the opposite direction of the rewinding direction, and enabling the consumable 500 to move to a feeding state based on the first feedback signal and the second feedback signal.

Taking the example that the first consumable detecting member 310 and the second consumable detecting member 320 both generate feedback signals when contacting the consumable 500, when receiving a consumable rewinding command or performing a procedure to consumable rewinding procedure, whether there are a first feedback signal and a second feedback signal is judged, if there are the first feedback signal and the second feedback signal, if there are feedback signals, then the rewinding stage is directly performed. If there is no first feedback signal and only there is a second feedback signal, then the feeding stage is performed first, where the feeding stage includes controlling the extrusion mechanism to extrude the consumable 500 in a direction opposite to the consumable rewinding direction, that is, feeding the consumable 500, and when the first feedback signal is received, it indicates that the consumable 500 has triggered the first consumable detecting member 310, then stopping feeding the consumable 500, and then performing the aforementioned rewinding stage. If there is no second feedback signal and only the first feedback signal, it indicates that the second consumable detection element 320 is malfunctioning, and an alarm message may be generated. If the first feedback signal and the second feedback signal are not provided, the feeding stage is performed first, the feeding stage comprises controlling the extrusion mechanism to extrude the consumable 500 in the opposite direction of the consumable rewinding direction, namely feeding the consumable 500, and when the first feedback signal and the second feedback signal are received, the consumable 500 is indicated to be fed in place, then feeding of the consumable 500 is stopped, and then the rewinding stage is performed.

In an alternative embodiment, the detecting member may also be a driving member, where the driving member is configured to drive the tray 100 to rotate, the feedback signal is an operating parameter of the driving member, where the operating parameter may be any one of torque, operating current, operating voltage, and power of the driving member, and the driving member may be a motor.

As shown in fig. 2, in order to initially put the tray 100 or when printing proceeds to a preset step, a part of the consumable 500 is in a loose state, and the driving part of the tray 100 needs to be controlled to start rewinding. As shown in fig. 3, the loose consumable 500 between the tray 100 and the extrusion mechanism is rewound, the consumable 500 becomes a tight state, and before this state, the consumable 500 is in a loose state, the pulling force on the tray 100 is smaller, the driving load of the driving member is smaller, and the working parameters are smaller. When the consumable 500 continues to be rewound, the consumable 500 moves relative to the consumable channel, and the driving load of the driving member increases due to the friction between the consumable channel and the consumable 500, so that the working parameters also increase. Thus, in an alternative embodiment, the consumable 500 is moved to the rewind state based on the feedback signal, which may specifically be: the driving member is controlled to drive the tray 100 to rotate in the direction of rewinding the consumable 500, and when the operating parameter of the driving member becomes large and the variation is greater than the threshold value, the driving of the tray 500 is stopped. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, whether a feedback signal exists or not is judged, if the feedback signal exists, the driving piece is controlled to drive the tray 100 to rotate in the consumable rewind direction, and then the stacked consumable 500 is rewound step by step. In the process of rewinding the consumable 500, the torque, the working voltage, the working current or the power of the driving piece is continuously obtained, and when the torque, the working voltage, the current or the power becomes larger and the variation is larger than the threshold value, the driving piece is controlled to stop driving the rotation of the tray 100.

That is, the material tray 100 is driven and stopped according to the working parameters when the material tray 100 is driven to rotate, so that the rewinding of the consumable 500 can be realized, the moving state of the material tray 100 is controlled according to the driving load of the rewinding, and the monitoring of the rewinding state of the consumable 500 is realized, so that the loose consumable 500 is ensured to be fully rewound on the material tray. It should be noted that, the threshold value is used to avoid the change of the working parameter caused by the position change or the weight change of the loose consumable 500, for example, during the rewinding process, the loose consumable 500 may become fully suspended from the abutment on the operation table, which may result in a slight increase of the driving load of the driving member, but the amount of change of the working parameter does not exceed the threshold value, and thus the driving of the tray 100 is not stopped.

In another alternative embodiment, moving the consumable 500 to the rewind state based on the feedback signal may be: the driving member is controlled to drive the tray 100 to rotate in a direction to rewind the consumable 500, and when the operating parameter of the driving member becomes large, the driving of the tray 500 is stopped when the operating parameter is greater than a threshold value. The consumable rewinding method comprises the following steps: when a consumable rewind instruction is received or the program is executed to the consumable rewind program, whether a feedback signal exists or not is judged, if the feedback signal exists, the driving piece is controlled to drive the tray 100 to rotate in the consumable rewind direction, and then the stacked consumable 500 is rewound step by step. During the process of rewinding the consumable 500, the working current or power of the driving member is continuously obtained, and when the current or power becomes larger and the current or power is larger than the threshold value, the driving member is controlled to stop driving the rotation of the tray 100.

The driving member may be a driving member of various forms, and it is only required to drive the tray 100 to rotate or stop. The driving member corresponds to the tray 100, and can realize the independent control rotation of the tray 100. In an alternative embodiment, the driving member includes a power member, where the tray 100 may be provided with a rotation shaft coaxial with a central axis of the tray 100, and the power member is connected to the rotation shaft of the tray 100, and the power member may be a motor, and then drives the tray 100 to rotate through the motor. Alternatively, as shown in fig. 2-8, the driving member includes a power member, a first rotating wheel 210 and a second rotating wheel 220, the power member is connected to the first rotating wheel 210, and the first rotating wheel 210 and the second rotating wheel 220 respectively abut against the tray 100. The first rotating wheel 210 and the second rotating wheel 220 are abutted against two sides of the bottom end of the tray 100, and then play a role in supporting the tray 100. The power member may be a motor coaxially connected with the first rotating wheel 210, so as to drive the first rotating wheel 210 to actively rotate, the first rotating wheel 210 abuts against the edge of the tray 100, and the second rotating wheel 220 can passively rotate under the action of the tray 100, so as to drive the tray 100 to rotate. Alternatively, the drive member may not include a power member, but rather may be powered by an extrusion mechanism. If the driving member includes a first rotating wheel 210 and a second rotating wheel 220, the first rotating wheel 210 is in transmission connection with the extrusion mechanism, and the first rotating wheel 210 and the second rotating wheel 220 respectively abut against the tray 100. The first rotating wheel 210 moves the rotating power through the extruding mechanism, and then drives the tray 100 to rotate. It should be noted that, in the embodiment where the feedback signal is the operation parameter of the driving element, if the first rotating wheel 210 and/or the second rotating wheel 220 have a separate driving motor, the operation parameter is the operation parameter of the driving motor of the first rotating wheel 210 and/or the second rotating wheel 220, and if the first rotating wheel 210 and/or the second rotating wheel 220 have no separate driving motor, but rely on the driving of the extruding mechanism, the operation parameter is the operation parameter of the driving motor of the extruding mechanism.

Based on the same inventive concept, the embodiment of the invention also provides a consumable conveying system, which comprises a memory for storing a computer program;

a processor for implementing the steps of any consumable rewind method when executing a computer program. And:

the device comprises an extrusion mechanism, a driving piece and a consumable detection piece 300, wherein the driving piece is connected with a material tray 100, and the consumable detection piece 300 is positioned at the rear conveying end of the extrusion mechanism in the feeding direction of consumable 500;

the consumable detection piece is a broken material detector and/or a blocked material detector.

In an alternative embodiment, the extrusion mechanism of the consumable delivery system comprises an extruder on the printhead, i.e. the consumable delivery system may set up the extrusion mechanism in addition to the extruder on the printhead, or may use only the extruder on the printhead as the extrusion mechanism for the consumable, or comprise a separate extrusion mechanism and extruder on the printhead, without specific limitation.

In an alternative embodiment, the material detecting member includes at least a first consumable detecting member and a second consumable detecting member, and in a feeding direction of the consumable conveying system, the second consumable detecting member is located at a rear end of the first consumable detecting member.

In another embodiment, the consumable delivery system further comprises a prompting device, and the controller may be further configured to generate a prompting message control signal after the driving member is controlled to stop driving the tray 100.

The prompting device is used for sending out prompting information according to the prompting control signal.

The prompting device is also used for sending out alarm information according to the alarm information control signal.

In an alternative embodiment, the consumable delivery system includes a drive member corresponding to the tray;

the driving piece comprises a power piece, and the power piece is connected with the material tray;

or the driving piece comprises a power piece, a first rotating wheel and a second rotating wheel, the power piece is connected with the first rotating wheel, and the first rotating wheel and the second rotating wheel are respectively abutted against the tray;

or the driving piece comprises a first rotating wheel and a second rotating wheel, the first rotating wheel is in transmission connection with the extrusion mechanism, and the first rotating wheel and the second rotating wheel are respectively abutted against the charging tray.

In an alternative embodiment, the present invention further provides a 3D printer, including a consumable delivery system as described in any one of the above, including advantages of any one of the consumable delivery systems described above, which are not described herein.

In an alternative embodiment, the 3D printer includes a consumable detection piece disposed in a consumable transport path of the printer; and/or the number of the groups of groups,

the consumable detection piece is arranged on a printing head of the 3D printer.

In an alternative embodiment, the consumable rewind control program may be implemented on a 3D printer or on a consumable delivery system, which is not specifically limited herein.

In an alternative embodiment, the instant invention further provides a computer-readable storage medium having stored therein at least one executable instruction for causing a processor to perform the steps of any of the consumable delivery methods.

Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, where the software product to be identified may be stored in a non-volatile storage medium, such as a CD-ROM, a usb disk, a mobile hard disk, etc., and includes several instructions to enable a computer device to be a personal computer, a server, or a network device, etc., to execute the consumable delivery method of the present application.

The application also provides the following embodiments:

reference numeral 1, a consumable rewind method, for a consumable delivery system, comprising:

controlling consumable movement in response to a consumable rewind instruction;

Reference numeral 2, consumable rewind method according to reference numeral 1, wherein consumable rewind instruction includes:

the consumable access instruction is generated when the consumable is accessed to the consumable conveying system; and/or the number of the groups of groups,

a print end instruction generated when the consumable use ends; and/or the number of the groups of groups,

A starting-up initialization instruction is generated when a consumable conveying system starts up for initialization; and/or the number of the groups of groups,

and the user instruction is generated when the consumable conveying system is instructed by a user to execute consumable rewinding action.

Reference numeral 3, according to the consumable rewinding method of reference numeral 1, wherein, consumable conveying system includes the detection piece, and the detection piece is based on the motion state of consumable and is produced corresponding feedback signal, makes the consumable move to the rewinding state based on feedback signal, includes:

when the consumable performs a rewinding action, a feedback signal of the detection piece is obtained;

and when the feedback signal is subjected to preset change, controlling the consumable to stop moving.

Reference numeral 4, according to the consumable rewinding method of reference numeral 3, wherein, the detection piece includes the consumable detection piece, and the consumable detection piece is used for sensing the consumable, and feedback signal is the signal that the consumable detection piece produced based on the motion state of consumable.

Reference numeral 5, a consumable rewinding method according to reference numeral 4, wherein the consumable detection element is used for generating a feedback signal when contacting the consumable, the motion state comprises a position state, and the feedback signal comprises a signal generated by the consumable detection element based on the position state of the consumable; when the feedback signal is subjected to preset change, controlling the consumable to stop moving, including:

Monitoring a feedback signal of the consumable detection piece, and judging whether the consumable is separated from the consumable detection piece or not based on the feedback signal;

when the feedback signal disappears, the consumable is judged to be separated from the consumable detection piece, and the consumable is controlled to stop moving.

Reference numeral 6, a consumable rewinding method according to reference numeral 4, wherein the consumable detection element is used for generating a feedback signal when the consumable detection element is separated from the consumable, the motion state comprises a position state, and the feedback signal comprises a signal generated by the consumable detection element based on the position state of the consumable; when the feedback signal is subjected to preset change, controlling the consumable to stop moving, including:

when the feedback signal is received, the consumable is judged to be separated from the consumable detection piece, and the consumable is controlled to stop moving.

Reference numeral 7, the consumable rewinding method according to reference numeral 5 or 6, wherein the consumable detection element is a material breakage detector, and the position state comprises a state that the consumable is in contact with the consumable detection element and a state that the consumable is out of contact with the consumable detection element.

Reference numeral 8, according to the consumable rewind method of reference numeral 4, wherein, the consumable detects the piece and is used for producing feedback signal when the consumable removes, and the motion state includes speed state, and feedback signal includes the consumable and detects the signal that the piece produced based on the speed state of consumable, when feedback signal takes place to predetermine the change, control consumable stop motion includes:

Monitoring a feedback signal of the consumable detection piece, and identifying whether the feedback signal triggers a first preset condition;

when the frequency of the feedback signal is not smaller than the preset frequency, the feedback signal is judged to trigger a first preset condition, and consumable materials are controlled to stop moving.

Reference numeral 9, consumable rewinding method according to reference numeral 8, wherein the consumable detection piece is a blockage detector, and the blockage detector generates a feedback signal with corresponding frequency according to the speed of consumable movement;

when the frequency of the feedback signal is not less than the preset frequency, judging that the movement speed of the consumable triggers a first preset condition, and controlling the consumable to stop moving, wherein the method comprises the following steps of:

starting timing when the frequency of the feedback signal is not less than a preset frequency;

and acquiring the duration time of the feedback signal with the frequency not smaller than the preset frequency, and controlling the consumable to stop moving if the duration time is not smaller than the first preset time.

Reference numeral 10, a consumable rewinding method according to reference numeral 4, wherein the feedback signal at least comprises a first feedback signal and a second feedback signal, the consumable detection piece at least comprises a first consumable detection piece and a second consumable detection piece, the first consumable detection piece corresponds to the first feedback signal, the second consumable detection piece corresponds to the second feedback signal, and the second consumable detection piece is positioned at the rear end of the first consumable detection piece in the feeding direction of the consumable conveying system; moving the consumable to a rewind state based on the feedback signal, comprising:

Based on the signal change between the first feedback signal and the second feedback signal, the consumable is moved to a rewind state.

Reference numeral 11, the consumable rewind method according to reference numeral 10, wherein moving the consumable to the rewind state based on the signal change between the first feedback signal and the second feedback signal, comprises:

starting timing when the first feedback signal is subjected to preset change;

and in the second preset time, if the second feedback signal is subjected to preset change, judging that the consumable moves to a winding state, and controlling the consumable to stop moving.

Reference numeral 12, the consumable rewind method according to reference numeral 1, wherein controlling the consumable movement comprises controlling the consumable to move in the consumable rewind direction, and before controlling the consumable movement, the consumable rewind method further comprises:

and acquiring a feedback signal, judging whether the feedback signal meets a second preset condition, and if the feedback signal does not meet the second preset condition, controlling the consumable to move in the opposite direction of the rewinding direction, so that the sensing state of the consumable moving to the feedback signal is changed.

Reference numeral 13, a consumable rewinding method according to reference numeral 3, wherein the consumable conveying system comprises a driving member for driving the turntable of the material tray, the feedback signal comprises working parameters of the driving member, and the working parameters comprise any one of torque, current, power and voltage of the driving member;

When the feedback signal is subjected to preset change, controlling the consumable to stop moving, including:

when the working parameter is larger and the variation is larger than the threshold value, or the working parameter is larger than the threshold value, the consumable is judged to move to a rewinding state, and the consumable is controlled to stop moving.

Reference numeral 14, a consumable delivery system, comprising:

a memory storing a program or instructions;

the method comprises the steps of a consumable rewinding method according to any one of the reference numerals 1 to 13 when the main controller executes a program or an instruction.

Reference numeral 15, the system according to reference numeral 14, wherein the system further comprises:

the extruding mechanism is used for feeding, and in the feeding direction of the extruding mechanism, a consumable detection piece of the system is positioned at the rear conveying end of the extruding mechanism;

the consumable detection piece is a broken material detector and/or a blocked material detector;

the consumable detection piece at least comprises a first consumable detection piece and a second consumable detection piece, and the second consumable detection piece is positioned at the rear end of the first consumable detection piece in the feeding direction of the consumable conveying system.

Reference numeral 16, a 3D printer, comprising a consumable delivery system as described in any of reference numerals 14 to 15 above.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all technical features thereof can be replaced by others within the spirit and principle of the present invention; such modifications and substitutions do not depart from the scope of the invention.

Claims

1. A consumable rewind method for a consumable delivery system, comprising:

controlling consumable movement in response to a consumable rewind instruction;

and acquiring a feedback signal, and moving the consumable to a rewinding state based on the feedback signal.

2. The consumable rewind method of claim 1, wherein the consumable rewind instruction comprises:

a consumable access instruction generated when the consumable is accessed to the consumable conveying system; and/or the number of the groups of groups,

a starting-up initialization instruction is generated when the consumable conveying system is started up for initialization; and/or the number of the groups of groups,

3. The consumable rewind method of claim 1, wherein the consumable delivery system includes a detection component that generates a corresponding feedback signal based on a state of motion of the consumable, the moving the consumable to the rewind state based on the feedback signal comprising:

4. A consumable rewind method according to claim 3, wherein the detecting member comprises a consumable detecting member for sensing the consumable, and the feedback signal is a signal generated by the consumable detecting member based on a movement state of the consumable.

5. The consumable rewind method of claim 4, wherein the feedback signals comprise at least a first feedback signal and a second feedback signal, the consumable detection element comprises at least a first consumable detection element and a second consumable detection element, the first consumable detection element corresponds to the first feedback signal, the second consumable detection element corresponds to the second feedback signal, and the second consumable detection element is positioned at the rear end of the first consumable detection element in the feeding direction of the consumable conveying system; the moving the consumable to a rewind state based on the feedback signal includes:

and moving the consumable to the rewind state based on a signal change between the first feedback signal and the second feedback signal.

6. The consumable rewind method of claim 1, wherein controlling the consumable movement comprises controlling the consumable to move in a consumable rewind direction, the consumable rewind method further comprising, prior to controlling the consumable movement:

And acquiring a feedback signal, judging whether the feedback signal meets a second preset condition, and if the feedback signal does not meet the second preset condition, controlling the consumable to move in the opposite direction of the rewinding direction so that the sensing state of the consumable moving to the feedback signal changes.

7. A consumable rewind method according to claim 3, wherein the consumable transport system comprises a drive for driving the turntable of the material tray, the feedback signal comprising an operating parameter of the drive, the operating parameter comprising any one of torque, current, power and voltage of the drive;

when the working parameter is larger and the variation is larger than the threshold, or the working parameter is larger than the threshold, the consumable is judged to move to the rewinding state, and the consumable is controlled to stop moving.

8. A consumable delivery system, comprising:

a memory storing a program or instructions;

a master which when executing the program or instructions implements the steps of the consumable rewind method of any one of claims 1 to 7.

9. The system of claim 8, wherein the system further comprises:

the extruding mechanism is used for feeding, and in the feeding direction of the extruding mechanism, the consumable detection piece of the system is positioned at the rear conveying end of the extruding mechanism;

the consumable detection piece at least comprises a first consumable detection piece and a second consumable detection piece, wherein the second consumable detection piece is positioned at the rear end of the first consumable detection piece in the feeding direction of the consumable conveying system.

10. A 3D printer comprising a consumable delivery system according to any of the preceding claims 8 to 9.