A consumable rewinding method, consumable conveying system and 3D printer

Abstract

The application discloses a consumable rewinding method, a consumable conveying system and a 3D printer. The method comprises the following steps: in response to a consumable rewinding instruction, controlling the movement of the consumable; and acquiring a feedback signal and moving the consumable to a rewinding state based on the feedback signal. The application can realize automatic monitoring of the rewinding progress of the consumable.

Description

Consumable material rewinding method, consumable material conveying system and 3D printer

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on January 9, 2024, with application number 202410035743.6 and application name “A consumable material rewinding method, consumable material conveying system and 3D printer”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of three-dimensional molding technology, and in particular to a consumable material rewinding method, a consumable material conveying system and a 3D printer. Background Art

[0003] In 3D printing equipment, a material tray is placed in a material rack or magazine, and the filamentary material on the tray is introduced into an extruder. During the printing process, the extruder continuously squeezes out the filamentary material, which then enters the print head through a material transmission channel. The print head is used to melt the filament and spray it layer by layer to achieve 3D printing.

[0004] When the material tray is placed on a material rack or material box, the consumables may be in a loose state and suspended in a disorderly manner, causing the consumables to easily droop and tangle, making it impossible to feed smoothly. To retract the loose consumables, the existing technology uses a drive to rotate the material tray to achieve consumable rewinding. However, since the length of the loose consumables cannot be determined, it is also impossible to determine when the consumables are rewound. The user is required to observe the state of the loose consumables during rewinding. After the loose consumables are rewound, the rewinding process must be manually stopped, resulting in insufficient automation of the consumables rewinding and inconvenience.

[0005] Application Contents

[0006] In view of this, the present application provides a consumable rewinding method, a consumable conveying system and a 3D printer to solve the problem that the consumable rewinding process cannot be automatically obtained. According to one aspect of the present application, a consumable rewinding method is provided for a consumable conveying system, and the consumable rewinding method includes: controlling the movement of the consumable in response to a consumable rewinding instruction; obtaining a feedback signal, and moving the consumable to a rewound state based on the feedback signal. According to a second aspect of the present application, a consumable conveying system is provided, including: a memory, the memory storing a program or instruction; a main controller, and the main controller implements the steps of the consumable rewinding method when executing the program or instruction. According to a third aspect of the present application, a 3D printer is provided, including the above-mentioned consumable conveying system.

[0007] The present application provides a consumable material rewinding method, consumable material conveying system and 3D printer, which drive the consumable material to move so that the loose consumable material is gradually and orderly rewound onto the material tray, and the loose consumable material is gradually reduced until the loose consumable material is taut. At this time, the movement of the consumable material or the material tray will change under the action of pulling, which will cause the feedback signal to change. At this time, it can be determined that the loose consumable material is in a taut state, and then the consumable material movement can be slowed down or stopped to achieve automatic rewinding of the consumable material, and automatically determine whether the loose consumable material is rewound, so that the consumable material rewinding process can be carried out automatically without the need for operator observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0009] FIG1 is a schematic diagram showing a process flow of a consumable material rewinding method provided in an embodiment of the present application;

[0010] FIG2 is a schematic diagram showing a scenario of a consumable material rewinding method provided by an embodiment of the present application during a first rewinding process;

[0011] FIG3 is a schematic diagram showing a scenario of a consumable material rewinding method provided by an embodiment of the present application during the second rewinding process.

[0012] FIG4 is a schematic diagram showing a scenario of a consumable material rewinding method provided by an embodiment of the present application during the third rewinding process.

[0013] FIG5 is a schematic diagram showing another consumable material rewinding method provided by an embodiment of the present application during the first rewinding process;

[0014] FIG6 is a schematic diagram showing another consumable material rewinding method provided by an embodiment of the present application during the second rewinding process;

[0015] FIG7 is a schematic diagram showing another consumable material rewinding method provided by an embodiment of the present application during a third rewinding process;

[0016] FIG8 is a schematic diagram showing another consumables rewinding method provided in an embodiment of the present application during the fourth rewinding process. DETAILED DESCRIPTION

[0017] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0018] The present application provides a consumable material rewinding method that can be applied to a consumable material conveying system. The consumable material conveying system of this embodiment includes an extrusion mechanism, a driver, a memory, and a main controller, which are used to execute the consumable material rewinding method. The consumable material conveying system can be independent of the stereolithography apparatus. For example, the consumable material conveying system includes a housing independent of the stereolithography apparatus, with the extrusion mechanism and the driver integrated into the housing. The housing defines a storage space within which the material tray 100 is placed. Alternatively, the extrusion mechanism can be integrated within the printhead. The extrusion mechanism is located between the material tray 100 and the nozzle of the printhead and is used to transfer the consumable material 500 to the printhead. The consumable material conveying system also includes a detection element that is used to sense changes in the consumable material 500 or the material tray 100 and subsequently generate a feedback signal. The detection element can be a driver or a variety of components distinct from the driver. The method of interaction with the consumable material 500 or the material tray 100 and the type of feedback signal generated can be various. The following embodiments will be described in detail with reference to specific structures. It should be understood that the above application scenario is only an example and is not intended to limit the various embodiments.

[0019] In one embodiment, as shown in FIG1 , the consumables rewinding method of the embodiment of the present application can be implemented based on a consumables conveying system, and can include at least the following steps S101 to S102 .

[0020] S101 , in response to a consumable rewinding instruction, controlling the consumable 500 to move.

[0021] The consumable rewind command is issued in response to a consumable rewind request. The consumable rewind request may occur when the material tray 100 is first placed in the consumable conveying system. For example, after the material tray 100 is initially placed, the consumable 500 needs to be drawn from the material tray 100 and introduced into the extrusion mechanism and the feed channel. To facilitate the introduction of the consumable 500, more consumable 500 than is needed is drawn. Subsequently, after the consumable 500 is introduced into the extrusion mechanism, the excess consumable 500 is in a loose state and needs to be rewound. Alternatively, the need for rewinding the consumables may arise after printing is completed. For example, during the printing process, the consumables 500 are fed in and out by the forward and reverse rotation of the extrusion mechanism, so that the consumables 500 can be replaced, such as color printing and automatic material refilling. However, when the material is withdrawn, the material tray 100 does not rotate or may be out of sync with the return speed of the extrusion mechanism, which will cause loose consumables 500. The need for rewinding the consumables may also arise when the consumable conveying system is just turned on. The consumables are rewound to ensure that the consumables on the material tray 100 are in a tightly wound state before the consumables are conveyed to avoid affecting subsequent printing.

[0022] In an optional embodiment, the consumable rewind instruction can be a user instruction, i.e., a user-initiated rewind instruction. For example, after the user has introduced the consumable 500 into the extruder, the user proactively issues the rewind instruction. Upon receiving the rewind instruction, the consumable 500 is controlled to move. Furthermore, / or, the consumable rewind instruction can be a print end instruction, generated when the consumable is no longer in use, such as when the current color of consumable is exhausted or needs to be replaced with another color, or when the model is printed, the currently used consumable can be retracted and the controller executes the rewind procedure. Furthermore, / or, the consumable rewind instruction can be a consumable access instruction, generated when the consumable is connected to the consumable conveying system. For example, when a user adds a new consumable to the consumable conveying system, or when a new consumable is connected during a material change, both of which can trigger the consumable access instruction. Furthermore, / or, the consumable rewind instruction can be a power-on initialization instruction, executed each time the consumable conveying system is powered on, performing a rewinding operation on each consumable contained in the consumable conveying system to ensure that each consumable is in a rewound state, i.e., that the consumables are not loose.

[0023] Controlling the movement of the consumables 500 refers to controlling the movement of the consumables 500 in the direction of winding back to the tray 100. For example, in the embodiment in which the consumables conveying system includes a driving member, the driving member can be controlled to drive the tray 100 to rotate in the direction of the consumables winding back, thereby driving the consumables 500 to wind back onto the tray 100. During normal printing, the tray 100 can rotate actively, such as the driving member driving the tray 100 to rotate actively, or the tray 100 can be pulled by the consumables 500 and passively rotated to release the consumables 500, and the rotation direction is the direction of releasing the consumables 500, such as the clockwise direction in Figure 2. The direction of winding back the consumables 500 is opposite to the direction of releasing the consumables 500, thereby realizing the winding back of the consumables 500 and gradually winding around the tray 100. For example, the direction of winding back the consumables 500 is the counterclockwise direction in Figure 2, that is, the direction indicated by the arrow in Figure 2.

[0024] In response to the consumable rewinding instruction, the movement of the consumable 500 is controlled as follows: when the consumable rewinding instruction is received or the program executes the consumable rewinding program, the driving member is controlled to drive the material tray 100 to rotate in the direction of the consumable rewinding, thereby causing the accumulated consumable 500 to gradually rewind.

[0025] S102 , obtaining a feedback signal, and moving the consumable material 500 to a rewound state based on the feedback signal.

[0026] The feedback signal is used to indicate the current stress condition of the material tray 100 or the consumables 500, the driving difficulty, movement condition or movement position of the material tray 100. As shown in Figure 2, when the material tray 100 is initially placed or when printing reaches a preset step, part of the consumables 500 is in a loose state and needs to be rewound. As shown in Figure 3, the loose consumables 500 between the material tray 100 and the extrusion mechanism are completely rewound, and the consumables 500 become taut. The detection component can be used to feedback the change in the force exerted by the consumables 500 on the material tray 100. Alternatively, after the consumables 500 become taut, when they continue to rewind, the consumables at the rear end of the original loose consumable conveying will be affected, and then the detection component can be used to detect the movement state or position of the consumables at the rear end of the original loose consumable conveying.

[0027] Since the feedback signal changes after the consumables 500 becomes taut, the consumables 500 can be rewound or stopped according to the force applied to the material tray 100 or the consumables 500, the driving difficulty of the material tray 100, the movement state, or the position information, so as to monitor the rewinding progress of the consumables 500. The feedback signal is obtained and the consumables 500 are moved to the rewinding state based on the feedback signal. The following can be done: during the rewinding process of the consumables, according to the change of the feedback signal, it is determined whether the consumables have moved to the rewinding state, such as whether the rewinding state corresponds to all loose consumables being rewound onto the material tray, or to most loose consumables being rewound onto the material tray; when it is confirmed that the consumables have moved to the rewinding state, the driving member can be controlled to stop driving the rotation of the material tray 100, thereby stopping the rewinding movement of the consumables.

[0028] A consumables rewinding method provided in an embodiment of the present application drives the material tray to rotate, and then pulls the consumables, so that the loose consumables are gradually and orderly rewound onto the material tray. The loose consumables gradually decrease as the material tray rotates until the loose consumables are reduced to a taut state. At this time, the movement of the consumables or the material tray will change under the action of pulling, which will cause the feedback signal emitted by the detection part to change, so that the loose consumables can be determined to be in a taut state, and then the rotation of the material tray can be slowed down or stopped to realize automatic rewinding of the consumables, and automatically determine whether the loose consumables are rewound, so that the consumables rewinding process can be carried out automatically without the need for operator observation.

[0029] In an optional embodiment, the detection member can be a consumables detection member 300, which is used to generate a corresponding feedback signal based on the motion state of the consumables 500, and the feedback signal includes the feedback signal of the consumables detection member 300. The consumables detection member 300 can be integrated into the housing of the consumables conveying system, or the consumables detection member 300 can also be integrated inside the print head, or the consumables detection member 300 can be arranged in the consumables conveying channel between the consumables conveying system and the print head. In the feeding direction of the extruder mechanism, or in other words, in the feeding direction of the consumables 500 during the printing process, the consumables detection member 300 is located at the conveying rear end of the extruder mechanism, that is, the consumables detection member 300 is located between the extruder mechanism and the nozzle. During the feeding of the consumables, that is, the process of conveying the consumables 500 to the print head, the consumables 500 will first pass through the extruder mechanism and then pass through the consumables detection member 300. In this way, when the consumables 500 trigger the consumables detection member 300, the consumables 500 are stopped from being withdrawn, while the consumables 500 remain in the extruder mechanism and will not fall out.

[0030] As shown in Figure 2, part of the consumables 500 is in a loose state and needs to be rewound. As shown in Figure 3, the loose consumables 500 between the material tray 100 and the extrusion mechanism are rewound and the consumables 500 becomes taut. Before this state, the relative position between the consumables 500 and the consumable detection part 300 is fixed, or there is only slight relative movement, but the consumables 500 can still trigger the consumable detection part 300. When the loose part of the consumables 500 is rewound onto the material tray and continues to rewind, the consumables 500 will move relative to the consumable detection part 300. As shown in the direction of the arrow in Figure 3, the end of the consumables 500 will gradually approach the consumable detection part 300. In other words, when there is loose consumables 500, the feedback signal will not change when the consumables are rewound. Specifically, the consumables 500 are drawn out from the material tray 100, pass through the extrusion mechanism, and are introduced into the feed channel. The extrusion mechanism does not produce an extrusion effect on the consumables 500, and the consumables 500 can move relative to the extrusion mechanism. When the feed tray 100 is driven to rotate, the loose consumables 500 are pulled back onto the feed tray 100 by the feed tray 100. However, since the loose consumables 500 are between the extruder and the feed tray 100, the rewinding force on the loose consumables 500 is not greater than the clamping force on the consumables 500 within the extruder. Consequently, the consumables 500 at the rear end of the extruder conveyor will not move relative to the extruder and feed channel, or will move only slightly. After the loose consumables 500 are rewound, the consumables 500 will be tightened between the extruder and the feed tray 100. As the feed tray 100 continues to rotate, the rewinding force will be greater than the clamping force, and the consumables 500 at the rear end of the extruder conveyor will be further pulled, and then move relative to the extruder and feed channel. When the consumables 500 move, or move to a certain relative position with the consumables detection component 300, the feedback signal will change. Therefore, step S102 can specifically be to control the driving component to stop driving the material tray 100 when the feedback signal undergoes a preset change, that is, to drive and stop the material tray 100 according to the feedback signal, and then to realize the rewinding of the consumables 500, and to control the moving state of the material tray 100 according to the degree of rewinding, thereby realizing the monitoring of the rewinding.

[0031] The consumable detection element 300 can be of various types, and is designed to generate feedback when the state of the consumable 500 changes. The change in the state of the consumable 500 can be the presence or absence of the consumable 500, a change in the speed of the consumable 500, or a change in the tension applied to the consumable 500. The feedback signal can be used to provide feedback on the presence or absence of the consumable 500, feedback on the start of movement of the consumable 500, or feedback on whether the tension applied to the consumable 500 has increased, decreased, or remained unchanged.

[0032] Depending on the triggering principle of the consumable detection element 300, the preset change of the feedback signal may also vary. In this embodiment, the motion state of the consumable 500 includes a position state, which is used to represent the position change of the portion of the consumable 500 that triggers the consumable detection element 300. The following three specific embodiments are given as examples. It should be understood that the preset change of the feedback signal is not limited to the following three situations.

[0033] In a first optional embodiment, the consumables detection member 300 is configured to generate a feedback signal when contacting the consumables 500. The feedback signal includes a signal generated by the consumables detection member based on the position state of the consumables; the position state includes a state in which the consumables are in contact with the consumables detection member and a state in which they are out of contact. In this embodiment, the feedback from the consumables detection member 300 corresponds to the state in which the consumables are in contact with the consumables detection member. When the feedback signal undergoes a preset change, the movement of the consumables 500 is stopped, including: when the feedback signal disappears, the movement of the consumables 500 is stopped. The consumables rewinding method includes: upon receiving a consumables rewinding instruction or upon executing a consumables rewinding program, controlling the drive member to drive the material tray 100 to rotate in the direction of the consumables rewinding, thereby causing the accumulated consumables to gradually rewind. During the consumables rewinding process, the feedback signal is continuously received. When the feedback signal disappears, it is determined that the consumables have separated from the consumables detection member, and further, it is determined that the consumables have moved to a rewinding state (i.e., all or part of the loose consumables have been wound back onto the material tray), and the drive member is controlled to stop driving the rotation of the material tray 100.

[0034] The consumables detection member 300 can be a material break detector, such as a touch sensor. The consumables detection member 300 includes a resilient contact and an electrical contact plate. The resilient contact protrudes from the inner wall of the conductive channel of the consumables 500. The conductive channel can be a consumables feed channel provided on the print head, or a separate stop block can be provided on which the conductive channel is provided. When the consumables 500 are inserted into the conductive channel, the resilient contact is squeezed, thereby electrically connecting the resilient contact to the electrical contact plate, thereby generating a feedback signal. That is, when the feedback signal is received, it indicates that the consumables 500 are properly inserted. When the consumables 500 are not properly inserted, the resilient contact will spring and lose electrical contact with the electrical contact plate, and the feedback signal will disappear.

[0035] In this embodiment, when the consumable 500 starts to move relative to the consumable detection part 300, the signal of the consumable detection part 300 will not change, and the consumable 500 will continue to rewind until, as shown in Figure 4, when the end of the consumable 500 is separated from the consumable detection part 300, the feedback signal will disappear. This is because the loose part of the consumable has been rewound onto the material tray 100, which will pull the consumable 500 located at the rear end of the conveying mechanism to move away from the consumable detection part 300. At this time, it can be determined that the loose part of the consumable 500 is rewound into place, and the next operation such as printing can be performed, then the control drive member stops driving the material tray 100.

[0036] In a second optional embodiment, the consumable detection member 300 is used to generate a feedback signal when it is separated from the consumable 500. The feedback signal includes a signal generated by the consumable detection member based on the position state of the consumable. The position state includes a state in which the consumable is in contact with the consumable detection member and a state in which it is out of contact. The feedback signal of this embodiment corresponds to a state in which the consumable is out of contact with the consumable detection member. When a preset change occurs in the feedback signal, the consumable 500 is stopped from moving, including: when the feedback signal is received, the consumable 500 is stopped from moving. The consumable rewinding method includes: when a consumable rewinding instruction is received or the program executes the consumable rewinding program, controlling the driving member to drive the material tray 100 to rotate in the direction of the consumable rewinding, thereby causing the accumulated consumables to gradually rewind. During the process of rewinding the consumables, wait for the feedback signal. When the feedback signal is received, it is determined that the consumables are detached from the consumable detection part, indicating that the loose part of the consumables 500 has been rewound onto the material tray. Only then will the consumables 500 located at the rear end of the conveying of the extrusion mechanism be pulled to move away from the consumable detection part 300, thereby confirming that the consumables 500 have moved to the rewinding state, and then controlling the driving part to stop driving the rotation of the material tray 100.

[0037] The consumable detection component 300 can be a material break detector, such as a photoelectric sensor. The consumable detection component 300 includes a light signal generator and a light signal receiver. The light signal generator and the light signal receiver are arranged on opposite sides of the conductive channel of the consumable 500. When the consumable 500 is inserted into the conductive channel, the light signal is blocked, so that the light signal receiver cannot receive the light signal, and the feedback signal disappears. That is, when the feedback signal cannot be received, it means that the consumable 500 is fully inserted. When the consumable 500 is not fully inserted, the light signal receiver can receive the light signal and can then receive the feedback signal.

[0038] In this embodiment, when the consumable 500 starts to move relative to the consumable detection part 300, the consumable detection part 300 still does not send a feedback signal, and then the consumable 500 continues to rewind until, as shown in Figure 3, when the end of the consumable 500 is separated from the consumable detection part 300, the consumable detection part 300 will generate a feedback signal. At this time, it can be determined that the loose part of the consumable 500 is rewound into place, and the next operation such as printing can be performed, and the drive part is controlled to stop driving the material tray 100.

[0039] In a third optional embodiment, the consumable detection component 300 is used to generate intermittent feedback signals when the consumable 500 moves. The movement state of the consumable includes a speed state, and the feedback signal includes a signal generated by the consumable detection component based on the speed state of the consumable. That is, the feedback signal can represent the movement speed of the portion of the consumable that triggers the consumable detection component 300. When the feedback signal undergoes a preset change, the consumable 500 is stopped from moving, including: monitoring the feedback signal of the consumable detection component 300, identifying whether the feedback signal triggers a first preset condition; when the frequency of the feedback signal is not less than the preset frequency, determining that the feedback signal triggers the first preset condition, and controlling the consumable 500 to stop moving. The consumable rewinding method includes: upon receiving a consumable rewinding instruction or the program executing the consumable rewinding program, controlling the drive component to drive the material tray 100 to rotate in the direction of consumable rewinding, thereby causing the accumulated consumable 500 to gradually rewind. During the process of the consumable 500 winding back, the frequency of the feedback signal is calculated. When the frequency of the feedback signal is not less than the preset frequency, it is determined that the movement speed of the consumable triggers the first preset condition, such as part of the consumables that triggers the consumable detection part to be continuously driven or the movement speed of part of the consumables that triggers the consumable detection part exceeds the threshold, and then it is determined that the consumable moves to the winding state, and the driving part can be controlled to stop driving the rotation of the material tray 100.

[0040] The consumable material detection component 300 may include a material jam detector that generates a feedback signal of a corresponding frequency based on the speed of the consumable material during movement. For example, the consumable material detection component 300 may include a spring contact with a notch formed thereon. A photoelectric sensor is used to correspond to the notch of the spring contact. The spring contact protrudes from the inner wall of the conductive channel of the consumable material 500 and is rotatable. When the consumable material 500 is inserted into the conductive channel, it squeezes the spring contact. When the consumable material 500 is not moving, the photoelectric sensor will align with the notch or between the notches. The photoelectric sensor may then continuously generate feedback or may not generate feedback, in which case it is determined that the consumable material 500 is not moving. When the consumable material 500 moves, the spring contact is driven by the consumable material 500 to rotate, causing the notch to intermittently pass through the photoelectric sensor, causing the photoelectric sensor to emit intermittent feedback signals, thereby determining that the consumable material 500 is moving. The frequency of the feedback signal can also be used to determine the movement speed of the consumable material 500. When the frequency of the feedback signal is not less than the preset frequency, it indicates that the loose part of the consumable material 500 has been rolled back onto the material tray 100, which will pull the consumable material 500 at the rear end of the conveying of the extrusion mechanism to move, and then cause the frequency of the feedback signal to be not less than the preset frequency, thereby confirming that the consumable material 500 has moved to the rewound state, fully wound or partially wound, not less than the tight state shown in Figure 3, and the next operation such as printing can be carried out, then the control drive component stops driving the material tray 100.

[0041] In a third optional embodiment, the feedback signal sent by the consumable detection member 300 may be due to relative movement between the consumable 500 and the consumable detection member 300 caused by vibration or instantaneous pulling generated during the rewinding process of the consumable 500. In order to make the detection result more accurate, in an optional 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, obtaining the duration of the feedback signal frequency not less than the preset frequency, and if the duration is not less than the first preset time, controlling the driving member to stop driving the material tray 100. The consumable rewinding method includes: when receiving a consumable rewinding instruction or the program executes the consumable rewinding program, controlling the driving member to drive the material tray 100 to rotate in the direction of consumable rewinding, thereby causing the accumulated consumable 500 to gradually rewind. During the winding process of the consumable material 500, the frequency of the feedback signal is calculated. When the frequency of the feedback signal is not less than the preset frequency, the timing is started. If the duration of the frequency of the feedback signal is not less than the preset frequency reaches the first preset time, the driving member is controlled to stop driving the rotation of the material tray 100; if the duration of the frequency of the feedback signal is not less than the preset frequency does not reach the first preset time, the timing is reset, and the driving member is continuously controlled to drive the rotation of the material tray 100, and the frequency of the feedback signal is calculated to determine whether the frequency of the feedback signal is not less than the preset frequency.

[0042] The first preset time can be 2 seconds, 3 seconds, or the like, and can be determined based on the rotational speed of the material tray 100 when rewinding the consumable material 500. If the frequency of the feedback signal is continuously not less than the preset frequency within the first preset time, it indicates that the consumable material 500 is continuously moving due to the rewinding of the material tray 100, rather than instantaneous movement caused by vibration, etc. Subsequently, when the frequency of the feedback signal is not less than the preset frequency for a duration not less than the first preset time, the driving of the material tray 100 can be stopped, completing the rewinding of the consumable material 500.

[0043] In an optional embodiment, the consumable material conveying system further includes a prompting device. After the driving member is controlled to stop driving the material tray, the prompting device is further controlled to issue a prompt message to inform the user that the consumable material 500 has been rewound and the next operation can be performed.

[0044] The consumable material conveying system may include only a single consumable material detection component 300, such as any of the consumable material detection components 300 described in the aforementioned embodiments. Alternatively, as shown in Figures 5-8, the detection components may include at least two consumable material detection components 300. The two consumable material detection components 300 may utilize the same detection principle or different detection principles. The two consumable material detection components 300 are spaced apart in the forward direction of the consumable material 500 conveying path, i.e., the direction of conveyance of the consumable material from the consumable material conveying system to the print head, to avoid problems such as signal misjudgment.

[0045] In an optional embodiment, there are two consumable material detection components, namely a first consumable material detection component 310 and a second consumable material detection component 320. The feedback signal includes a first feedback signal of the first consumable material detection component 310 and a second feedback signal of the second consumable material detection component 320. In the feeding direction of the extrusion mechanism, the second consumable material detection component 320 is located at the rear end of the extrusion mechanism, and the first consumable material detection component 310 is located at the rear end of the second consumable material detection component 320.

[0046] In an optional embodiment, the step of causing the consumables to move to a reeled state based on a feedback signal includes: causing the consumables to move to a reeled state based on a signal change between a first feedback signal and a second feedback signal. The consumables reeling method includes: upon receiving a consumables reeling instruction or upon executing a consumables reeling program, controlling the drive element to drive the material tray 100 to rotate in the direction of the consumables reeling, thereby causing the accumulated consumables to gradually reel. During the consumables reeling process, the first feedback signal and the second feedback signal are obtained, and when both the first feedback signal and the second feedback signal undergo a preset change, the drive element is controlled to stop driving the rotation of the material tray 100.

[0047] The use of the first consumable material detection component 310 and the second consumable material detection component 320 can avoid misjudgment of the consumable material rewinding process, and can make the monitoring of the consumable material rewinding process more accurate.

[0048] The first consumable detection component 310 and the second consumable detection component 320 can be any of the aforementioned consumable detection components, such as the first consumable detection component 310 and the second consumable detection component 320 both generate feedback signals when contacting the consumable 500, such as the first consumable detection component 310 and the second consumable detection component 320 are both touch sensors. The following takes the first consumable detection component 310 and the second consumable detection component 320 as an example of touch sensors. The consumable rewinding method includes: when receiving a consumable rewinding instruction or the program executes the consumable rewinding program, controlling the driving component to drive the material tray 100 to rotate in the direction of consumable rewinding, thereby causing the accumulated consumables to gradually rewind. During the consumable rewinding process, the first feedback signal and the second feedback signal are obtained, and when the first feedback signal and the second feedback signal disappear, the driving component is controlled to stop driving the rotation of the material tray 100.

[0049] During the rewinding process of the consumable material 500, since the first consumable material detection component 310 is located at the rear end of the feeding direction of the second consumable material detection component 320, that is, the second consumable material detection component 320 is closer to the material tray 10. During the rewinding process of the consumable material 500, the end of the consumable material 500 will first pass through and separate from the first consumable material detection component 310, and the first feedback signal of the first consumable material detection component 310 will disappear. At this time, the second consumable material detection component 320 is still in contact with the consumable material 500 and generates a second feedback signal. The consumable material 500 continues to rewind, and then the end of the consumable material 500 will pass through and separate from the second consumable material detection component 320, and the second feedback signal of the second consumable material detection component 320 will disappear.

[0050] As shown in FIG5 , the consumable material 500 is loose between the extrusion mechanism and the material tray 100. After the material tray 100 is driven to rotate for a period of time, the loose consumable material 500 is rewound and the consumable material 500 is tightened between the extrusion mechanism and the material tray 100, as shown in FIG6 . The consumable material 500 continues to be rewound and begins to move relative to the first consumable material detection member 310 and the second consumable material detection member 320 in the direction indicated by the arrow in FIG6 . The signals of the first consumable material detection member 310 and the second consumable material detection member 320 do not change, and the consumable material 500 continues to be rewound until, as shown in FIG7 , the end of the consumable material 500 is about to be separated from the first consumable material detection member 310 and the first feedback signal disappears first. At this time, it may be that the consumable material 500 is rewound and separated from the first consumable material detection member 310. However, in some cases, the disappearance of the first feedback signal may be caused by vibration or a malfunction of the first consumable material detection member 310. Therefore, after the first feedback signal disappears, the consumable material 500 continues to be rewound. When the end of the consumable material 500 breaks away from the second consumable material detection component 320, as shown in Figure 8, the second feedback signal will disappear. At this time, it can be determined that the consumable material 500 is completely rewound, and the control drive component stops driving the material tray 100.

[0051] In an optional embodiment, the consumables 500 are moved to a reeling state based on the first and second feedback signals, specifically including: starting a timer when the first feedback signal undergoes a preset change. If the second feedback signal undergoes a preset change within a second preset time, the driver is controlled to stop driving the material tray; if the second feedback signal does not undergo a preset change, an alarm is generated. If both the first consumables detection component 310 and the second consumables detection component 320 are touch sensors, the consumables reeling method includes: upon receiving a consumables reeling instruction or upon executing a consumables reeling program, controlling the driver to rotate the material tray 100 in the direction of the consumables reeling, thereby gradually reeling the accumulated consumables 500. During the reeling process of the consumables 500, the first and second feedback signals are obtained. When the first feedback signal disappears, a timer is started. If the second feedback signal disappears within a second preset time, the driver is controlled to stop driving the material tray 100. If the second feedback signal does not disappear within the second preset time, it is determined that there is a fault in the first consumables detection component 310, and an alarm operation can be performed.

[0052] In an embodiment in which both the first consumable material detection component 310 and the second consumable material detection component 320 generate feedback signals when the consumable material 500 is separated, the consumable material rewinding method includes: upon receiving a consumable material rewinding instruction or the program executing the consumable material rewinding program, controlling the driving component to drive the material tray 100 to rotate in the direction of the consumable material rewinding, thereby causing the accumulated consumable material 500 to gradually rewind. During the rewinding process of the consumable material 500, a first feedback signal and a second feedback signal are obtained, and timing is started when the first feedback signal is received. If the second feedback signal is received within a second preset time, the driving component is controlled to stop driving the material tray. If the second feedback signal is not received within the second preset time, it is determined that there is a fault in the first consumable material detection component 310, and an alarm operation can be performed.

[0053] In some embodiments, the first feedback signal and the second feedback signal may be received simultaneously. There are various reasons for receiving both signals simultaneously, such as mechanical vibration or a jam of the first consumable detection component 310 and the second consumable detection component 320, which may generate an alarm message. The alarm message can be provided by the prompt device in the aforementioned embodiment. For example, the alarm message may be an audible or visual alarm message, or a prompt screen on the control screen.

[0054] Alternatively, in an embodiment where both the first consumable material detection member 310 and the second consumable material detection member 320 generate intermittent feedback signals when the consumable material 500 moves, since the movement of the consumable material 500 relative to the first consumable material detection member 310 and the second consumable material detection member 320 is synchronized, the second preset time should be 0. The consumable material rewinding method includes: upon receiving a consumable material rewinding instruction or upon executing a consumable material rewinding procedure, controlling the driving member to drive the material tray 100 to rotate in the direction of consumable material rewinding, thereby causing the accumulated consumable material 500 to gradually rewind. During the rewinding process of the consumable material 500, when the frequency of the first feedback signal is not less than the preset frequency, the frequency of the second feedback signal is determined to be not less than the preset frequency. If it is not less than the preset frequency, a timer is started. If the duration of the first feedback signal's frequency not less than the preset frequency reaches a first preset time, the driver is controlled to stop driving the rotation of the material tray 100. If the duration of the first feedback signal's frequency not less than the preset frequency does not reach the first preset time, the driver is continuously controlled to drive the rotation of the material tray 100, and the frequency of the first feedback signal is repeatedly calculated to determine 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, but the frequency of the second feedback signal is less than or equal to the preset frequency, an alarm 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 material 500 has passed the first consumable material detection member 310. The duration of the second feedback signal's frequency not less than the preset frequency can be directly determined, so that the driver is controlled to stop driving the rotation of the material tray 100 when the first preset time is reached.

[0055] In addition, in other embodiments, due to the different structures of the consumable material conveying system, there may also be a third consumable material detection component, a fourth consumable material detection component, etc.

[0056] In one embodiment, controlling the movement of the consumable 500 includes controlling the consumable 500 to move in the consumable winding direction. Before controlling the movement of the consumable 500, the consumable winding method also includes: obtaining a feedback signal, determining whether the feedback signal meets a second preset condition, and if not, controlling the consumable 500 to move in the opposite direction of the winding direction, and based on the feedback signal, causing the consumable 500 to move until the sensing state of the feedback signal changes.

[0057] When the user installs the material tray 100, the consumables 500 are inserted into the extrusion mechanism and the consumable channel. However, the degree of insertion may vary. For example, the consumables 500 may be inserted into the extrusion mechanism but not reach the position of the consumable detection part 300. In order to realize the rewinding of the consumables 500 based on the feedback signal of the consumable detection part 300, the consumables 500 are fed through the extrusion mechanism so that the consumables 500 move to trigger the sensing state of the feedback signal of the consumable detection part 300 to change, such as the feedback signal changes from presence to absence, or the feedback signal changes from absence to presence, or the frequency of the feedback signal changes from a first frequency to a 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 consumables 500 are rewound. Alternatively, the consumables 500 may be inserted into the extrusion mechanism and inserted to the position that triggers the consumable detection part 300. At this time, the consumables 500 can be directly rewound.

[0058] The consumables rewinding method includes a feeding stage and a rewinding stage. The rewinding stage includes: controlling the consumables 500 to move in the consumables rewinding direction, obtaining a feedback signal, and moving the consumables 500 to a rewinding state based on the feedback signal. The specific embodiments of the rewinding stage for different consumables detection parts 300 can refer to the aforementioned embodiment. The feeding stage includes: controlling the consumables 500 to move in the opposite direction of the rewinding direction, obtaining a feedback signal, and moving the consumables 500 to a feeding state based on the feedback signal. In response to the consumables rewinding instruction, a feedback signal is obtained, and it is determined whether the feedback signal meets a second preset condition. If so, the rewinding stage is directly executed. If not, the feeding stage is executed first, and after the consumables 500 moves to the feeding state, the rewinding stage is executed.

[0059] Depending on the type of consumable detection component 300, the second preset condition is also different. For example, in one embodiment, the consumable detection component 300 is used to generate a feedback signal when contacting the consumable 500. When receiving the consumable rewinding instruction or the program executes the consumable rewinding program, it is determined whether there is a feedback signal. If there is a feedback signal, the rewinding stage is directly executed. If there is no feedback signal, the feeding stage is executed first. 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. When the feedback signal is received, it indicates that the consumable 500 has triggered the consumable detection component 300, and then the consumable 500 feeding is stopped, and then the aforementioned rewinding stage is executed. The consumable detection component 300 can also generate a feedback signal when it is separated from the consumable 500, which will not be repeated.

[0060] It is worth noting that in an embodiment in which the consumable detection part 300 includes a first consumable detection part 310 and a second consumable detection part 320, or includes more consumable detection parts, before controlling the movement of the consumable, the consumable winding method also includes: obtaining a first feedback signal and a second feedback signal, and determining 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 winding direction, and moving the consumable 500 to a feeding state based on the first feedback signal and the second feedback signal.

[0061] Taking the example of both the first consumable material detection component 310 and the second consumable material detection component 320 generating feedback signals upon contact with the consumable material 500, upon receiving a consumable material rewinding instruction or executing the consumable material rewinding procedure, a determination is made as to whether the first and second feedback signals are present. If present, the rewinding phase is directly executed. If the first feedback signal is absent, but only the second feedback signal is present, the feeding phase is first executed. The feeding phase includes controlling the extrusion mechanism to extrude the consumable material 500 in the direction opposite to the rewinding direction, i.e., feeding the consumable material 500. Upon receipt of the first feedback signal, it indicates that the consumable material 500 has triggered the first consumable material detection component 310, and the feeding of the consumable material 500 is subsequently stopped, and the aforementioned rewinding phase is then executed. If the second feedback signal is absent, but only the first feedback signal is present, it indicates that the second consumable material detection component 320 has malfunctioned, and an alarm message may be generated. If there is no first feedback signal and a second feedback signal, the feeding stage is executed first. The feeding stage includes controlling the extrusion mechanism to extrude the consumable 500 in the opposite direction of the consumable winding direction, that is, feeding the consumable 500. When the first feedback signal and the second feedback signal are received, it indicates that the consumable 500 has been fed into place, and then the feeding of the consumable 500 is stopped, and then the aforementioned winding stage is executed.

[0062] In an optional embodiment, the detection member can also be a driving member, which is used to drive the material tray 100 to rotate. The feedback signal is the working parameter of the driving member. The working parameter can be any one of the torque, working current, working voltage and power of the driving member. The driving member can be a motor.

[0063] As shown in FIG2 , when the material tray 100 is initially placed or when printing reaches a preset step, some of the consumables 500 are in a loose state, requiring the drive element of the material tray 100 to initiate rewinding. As shown in FIG3 , the loose consumables 500 between the material tray 100 and the extruder are completely rewound, and the consumables 500 are in a taut state. Prior to this state, the consumables 500 were in a loose state, exerting less tension on the material tray 100, reducing the driving burden on the drive element and resulting in lower operating parameters. As the consumables 500 continue to rewind, they move relative to the material channel. Due to the friction between the channel and the consumables 500, the driving burden on the drive element increases, and operating parameters also increase. Therefore, in an alternative embodiment, the consumables 500 are moved to the rewinding state based on a feedback signal. Specifically, this can be achieved by controlling the drive element to rotate the material tray 100 in the direction of the rewinding consumables 500. When the operating parameters of the drive element increase and the change exceeds a threshold, the drive element stops driving the material tray 500. The consumables rewinding method includes: upon receiving a consumables rewinding instruction or executing a consumables rewinding procedure, determining whether a feedback signal is received; if so, controlling a driver to rotate the material tray 100 in the direction of the consumables rewinding, thereby gradually rewinding the accumulated consumables 500. During the rewinding process of the consumables 500, the torque, operating voltage, operating current, or power of the driver is continuously obtained. When the torque, operating voltage, current, or power increases and the change exceeds a threshold, the driver is controlled to stop rotating the material tray 100.

[0064] That is, the tray 100 is driven and stopped according to the operating parameters when the tray 100 is driven to rotate, thereby achieving the rewinding of the consumables 500. The movement state of the tray 100 is controlled according to the driving load of the rewinding, and the rewinding state of the consumables 500 is monitored to ensure that all loose consumables 500 are rewound onto the tray. It is worth noting that the threshold value is used to avoid changes in the operating parameters caused by changes in the position or weight of the loose consumables 500. For example, during the rewinding process, the loose consumables 500 may change from being abutted against the operating table to being completely suspended. This will cause a slight increase in the driving load of the driving member, but the change in its operating parameters will not exceed the threshold value, and the driving of the tray 100 will not be stopped.

[0065] In another optional embodiment, the consumables 500 can be moved to a reeling state based on a feedback signal. This can be done by controlling the driving member to drive the material tray 100 to rotate in the direction of reeling the consumables 500, and stopping driving the material tray 500 when an operating parameter of the driving member increases and exceeds a threshold value. The consumables reeling method includes: upon receiving a consumables reeling instruction or when the program executes the consumables reeling program, determining whether there is a feedback signal. If there is a feedback signal, controlling the driving member to drive the material tray 100 to rotate in the direction of reeling the consumables, thereby causing the accumulated consumables 500 to gradually reel. During the reeling process of the consumables 500, the operating current or power of the driving member is continuously obtained. When the current or power increases and exceeds a threshold value, the driving member is controlled to stop driving the rotation of the material tray 100.

[0066] The driving member can be a driving member of various forms, and is intended to drive the material tray 100 to rotate or stop. The driving member corresponds to the material tray 100, and can realize the independent control rotation of the material tray 100. In an optional embodiment, the driving member includes a power member, and the material tray 100 can be provided with a rotating shaft coaxial with the central axis of the material tray 100. The power member is connected to the rotating shaft of the material tray 100. The power member can be a motor, which then drives the material tray 100 to rotate through the motor. Alternatively, in another optional embodiment, as shown in Figure 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 the material tray 100. The first rotating wheel 210 and the second rotating wheel 220 abut on both sides of the bottom end of the material tray 100, and then play the role of supporting the material tray 100. The power member can be a motor coaxially connected to the first rotating wheel 210, which then drives the first rotating wheel 210 to rotate actively. The first rotating wheel 210 abuts the edge of the material tray 100, and the second rotating wheel 220 can be passively rotated under the action of the material tray 100, thereby driving the material tray 100 to rotate. Alternatively, in another optional embodiment, the driving member may not include a power member, but instead provide power with the help of an extrusion mechanism. For example, the driving member includes a first rotating wheel 210 and a second rotating wheel 220, and the first rotating wheel 210 is transmission-connected to the extrusion mechanism, and the first rotating wheel 210 and the second rotating wheel 220 respectively abut the material tray 100. The first rotating wheel 210 generates rotational power through the extrusion mechanism, thereby driving the material tray 100 to rotate. It is worth noting that in the implementation scheme where the aforementioned feedback signal is the working parameter of the driving member, if the first rotating wheel 210 and / or the second rotating wheel 220 has a separate driving motor, the working parameters are the working parameters of the driving motor of the first rotating wheel 210 and / or the second rotating wheel 220; if the first rotating wheel 210 and / or the second rotating wheel 220 does not have a separate driving motor but relies on the drive of the extrusion mechanism, the working parameters are the working parameters of the driving motor of the extrusion mechanism.

[0067] Based on the same application concept, embodiments of the present application also provide a consumable material conveying system, comprising a memory for storing a computer program; a processor for implementing any of the steps of the consumable material rewinding method when executing the computer program; an extrusion mechanism, a drive member, and a consumable material detector 300, wherein the drive member is connected to the material tray 100 and the consumable material detector 300 is located at the conveying rear end of the extrusion mechanism in the feeding direction of the consumable material 500; and the consumable material detector is a material break detector and / or a material jam detector.

[0068] In an optional embodiment, the extrusion mechanism of the consumable delivery system includes an extruder on the print head, that is, the consumable delivery system can set up an extrusion mechanism independent of the extruder on the print head, or can only use the extruder on the print head as the extrusion mechanism for the consumables, or include an independent extrusion mechanism and an extruder on the print head, which is not specifically limited here.

[0069] In an optional embodiment, the material detection component includes at least a first consumable material detection component and a second consumable material detection component. In the feeding direction of the consumable material conveying system, the second consumable material detection component is located at the rear end of the first consumable material detection component.

[0070] In another embodiment, the consumable material conveying system further includes a prompting device, and the controller can be further configured to generate a prompting information control signal after controlling the driving member to stop driving the material tray 100. The prompting device is configured to issue a prompting information based on the prompting control signal. The prompting device is also configured to issue an alarm based on the alarm information control signal.

[0071] In an optional embodiment, the consumable material conveying system includes a driving member, and the driving member corresponds to the material tray;

[0072] The driving member includes a power member, which is connected to the material tray; or, the driving member includes a power member, a first rotating wheel and a second rotating wheel, the power member is connected to the first rotating wheel, and the first rotating wheel and the second rotating wheel respectively abut the material tray; or, the driving member includes a first rotating wheel and a second rotating wheel, the first rotating wheel is transmission-connected to the extrusion mechanism, and the first rotating wheel and the second rotating wheel respectively abut the material tray.

[0073] In an optional embodiment, the present application further provides a 3D printer, comprising a consumable material delivery system as described in any one of the above, including the advantages of any one of the above consumable material delivery systems, which will not be repeated here.

[0074] In an optional embodiment, the 3D printer includes a consumables detection component, which is deployed in the consumables conveying path of the printer; and / or the consumables detection component is deployed in the print head of the 3D printer.

[0075] In an optional embodiment, the control program for the consumable material rewinding can be implemented on a 3D printer or on a consumable material conveying system, which is not specifically limited here.

[0076] In an optional embodiment, the present application further provides a computer-readable storage medium, in which at least one executable instruction is stored, and the executable instruction enables a processor to execute any step of the consumable material conveying method.

[0077] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product. The software product to be identified can be stored in a non-volatile storage medium such as a CD-ROM, a USB flash drive, a mobile hard disk, etc., and includes a number of instructions for enabling a computer device such as a personal computer, a server, or a network device to execute the consumables conveying method of the present application.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that within the spirit and principles of the present application, they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate from the protection scope of the present application.

Claims

1. A consumable rewinding method for a consumable delivery system, wherein, Comprising: Controlling the movement of the consumable in response to a consumable rewinding instruction; Obtaining a feedback signal and moving the consumable to a rewinding state based on the feedback signal.

2. The consumable rewinding method according to claim 1, wherein, The consumable rewinding instruction includes: A consumable access instruction generated when the consumable is accessed to the consumable delivery system; and / or, A printing end instruction generated when the use of the consumable ends; and / or, A power-on initialization instruction generated when the consumable delivery system is powered on for initialization; and / or, A user instruction generated when the user instructs the consumable delivery system to perform a consumable rewinding action.

3. The consumable rewinding method according to claim 1, wherein, The consumable delivery system includes a detection component. The detection component generates a corresponding feedback signal based on the movement state of the consumable. The moving the consumable to a rewinding state based on the feedback signal includes: Obtaining the feedback signal of the detection component when the consumable performs a rewinding action; When the feedback signal undergoes a preset change, controlling the consumable to stop moving.

4. The consumable rewinding method according to claim 3, wherein, The detection component includes a consumable detection component. The consumable detection component is used to sense the consumable, and the feedback signal is a signal generated by the consumable detection component based on the movement state of the consumable.

5. The consumable rewinding method according to claim 4, wherein, The consumable detection component is used to generate the feedback signal when contacting the consumable. The movement state includes a position state, and the feedback signal includes a signal generated by the consumable detection component based on the position state of the consumable; The controlling the consumable to stop moving when the feedback signal undergoes a preset change includes: Monitoring the feedback signal of the consumable detection component and judging whether the consumable is separated from the consumable detection component based on the feedback signal; When the feedback signal disappears, determining that the consumable is separated from the consumable detection component and controlling the consumable to stop moving.

6. The consumable rewinding method according to claim 4, wherein, The consumable detection component is used to generate the feedback signal when separated from the consumable. The movement state includes a position state, and the feedback signal includes a signal generated by the consumable detection component based on the position state of the consumable; The controlling the consumable to stop moving when the feedback signal undergoes a preset change includes: Monitoring the feedback signal of the consumable detection component and judging whether the consumable is separated from the consumable detection component based on the feedback signal; When receiving the feedback signal, determining that the consumable is separated from the consumable detection component and controlling the consumable to stop moving.

7. The consumable rewinding method according to claim 5 or 6, wherein, The consumable detection component is a material break detector, and the position state includes the state of contact between the consumable and the consumable detection component and the state of separation from contact.

8. The consumable rewinding method according to claim 4, wherein, The consumable detection component is used to generate the feedback signal when the consumable moves. The movement state includes a speed state, and the feedback signal includes a signal generated by the consumable detection component based on the speed state of the consumable. The controlling the consumable to stop moving when the feedback signal undergoes a preset change includes: Monitoring the feedback signal of the consumable detection component and identifying whether the feedback signal triggers a first preset condition; When the frequency of the feedback signal is not less than a preset frequency, determining that the feedback signal triggers the first preset condition and controlling the consumable to stop moving.

9. The consumable rewinding method according to claim 8, wherein, The consumable detection component is a material blockage detector, and the material blockage detector generates a feedback signal with a corresponding frequency according to the speed when the consumable moves; The step of determining that the movement speed of the consumable triggers a first preset condition when the frequency of the feedback signal is not less than a preset frequency and controlling the consumable to stop moving includes: Start timing when the frequency of the feedback signal is not less than the preset frequency; Obtain the duration during which the frequency of the feedback signal is not less than the preset frequency. If the duration is not less than a first preset time, control the consumable to stop moving.

10. The consumable rewinding method according to claim 4, wherein, The feedback signal at least includes a first feedback signal and a second feedback signal. The consumable detection member at least includes a first consumable detection member and a second consumable detection member. The first consumable detection member corresponds to the first feedback signal, and the second consumable detection member corresponds to the second feedback signal. In the feeding direction of the consumable conveying system, the second consumable detection member is located behind the first consumable detection member; the step of moving the consumable to the rewinding state based on the feedback signal includes: Based on the signal change between the first feedback signal and the second feedback signal, move the consumable to the rewinding state.

11. The consumable rewinding method according to claim 10, wherein, The step of moving the consumable to the rewinding state based on the signal change between the first feedback signal and the second feedback signal includes: Start timing when the first feedback signal undergoes a preset change; Within a second preset time, if the second feedback signal undergoes a preset change, determine that the consumable moves to the rewinding state and control the consumable to stop moving.

12. The consumable rewinding method according to claim 1, wherein, Controlling the movement of the consumable includes controlling the consumable to move in the consumable rewinding direction. Before controlling the movement of the consumable, the consumable rewinding method further includes: Obtain a feedback signal, determine whether the feedback signal meets a second preset condition. If not, control the consumable to move in the opposite direction of the rewinding direction so that the sensing state of the feedback signal of the consumable changes.

13. The consumable rewinding method according to claim 3, wherein, The consumable conveying system includes a driving member for driving the material tray to rotate. The feedback signal includes the working parameters of the driving member, and the working parameters include any one of the torque, current, power, and voltage of the driving member; The step of controlling the consumable to stop moving when the feedback signal undergoes a preset change includes: When the working parameter becomes larger and the change amount is greater than a threshold value, or the working parameter is greater than the threshold value, determine that the consumable moves to the rewinding state and control the consumable to stop moving.

14. A consumable delivery system, wherein, Includes: A memory that stores programs or instructions; A main controller that implements the steps of the consumable rewinding method according to any one of claims 1 to 13 when executing the programs or instructions.

15. The system according to claim 14, wherein, The system further includes: An extrusion mechanism for feeding materials. In the feeding direction of the extrusion mechanism, the consumable detection member of the system is located at the rear end of the conveying of the extrusion mechanism; The consumable detection member is a material break detector and / or a material blockage detector; The consumable detection member at least includes a first consumable detection member and a second consumable detection member. In the feeding direction of the consumable conveying system, the second consumable detection member is located behind the first consumable detection member.

16. A 3D printer, wherein, Includes the consumable conveying system according to any one of claims 14 to 15 above.

Images