3D printer flexible consumable feeding method and auxiliary system

Abstract

The invention belongs to the technical field of 3D printing equipment, and discloses a 3D printer flexible consumable feeding method and an auxiliary system.The 3D printer flexible consumable feeding method comprises the steps that an auxiliary feeding mechanism is fixed to the top of a 3D printer, and a connection mode is selected according to a working mode; the flexible consumables penetrate through a feeding port of the auxiliary feeding mechanism, and a material breakage detection sensor arranged in the auxiliary feeding mechanism is triggered; activating a working mode corresponding to the auxiliary feeding mechanism; in the printing process, if the trigger sensor detects the section A consumable, a driving motor of the auxiliary feeding mechanism is started immediately; if it is detected that the 3D printer completes the printing program; according to the method, the extrusion resistance can be reduced through the top layout of the auxiliary feeding mechanism and the assistance of the self gravity of the consumables, meanwhile, the trigger sensor is matched to detect the pulling state of the section A consumable, the consumables are supplemented once the pulling force is detected, the section A consumable is always kept in a natural state, consumable deformation is avoided, the stable extrusion flow is guaranteed, and the production efficiency is improved. The surface quality and the size precision of a printed piece are improved; the material breakage detection sensor can recognize the state of the consumables in real time, sound-light alarm is triggered immediately after material breakage, feeding is paused, continuous printing can be conducted directly after manual material supplementing, the completed part does not need to be reprinted, waste of the consumables and the printing duration is reduced, and the actual production requirement is better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing equipment, in particular to a 3D printer flexible consumable feeding method and auxiliary system. BACKGROUND

[0002] With the popularization of 3D printing technology, flexible consumables (such as TPU, flexible resin, etc.) gradually become the core printing materials of wearable device accessories, flexible mechanical components, bionic models, etc. because they can print parts with elasticity and flexibility.

[0003] However, in the actual application process of the existing equipment, the traditional feeding is to directly place the consumable disc beside the printer, and only rely on the pulling force of the extruder to drive the feeding of the consumable. However, the flexible consumable is soft, and this "passive pulling" method will cause the consumable to bend and stretch, resulting in unstable extrusion amount, and finally the printed part will have size deviation, interlayer cracking and other problems. The existing material breakage detection is mostly integrated at the extruder. If the flexible consumable breaks at the disc end, the alarm will not be triggered until the remaining consumable is consumed by the extruder. During this process, the printer will continue to "empty printing", not only the consumable and time printed in the early stage are wasted, but also the printed part will be directly scrapped. The traditional feeding has no dynamic speed regulation mechanism, and the feeding speed is fixed. If the extrusion speed of the printer needs to be adjusted due to model requirements, it is easy to cause "excessive feeding leading to accumulation of consumables (blocking the extruder)" or "insufficient feeding leading to broken filament". The flexible consumable is easy to bend, and when manually connecting it to the feeding end of the extruder, the angle needs to be adjusted repeatedly. When a novice operates, the consumable often gets stuck in the channel, which reduces the loading efficiency and is not conducive to actual application and operation. SUMMARY

[0004] One of the purposes of the present application is to provide a 3D printer flexible consumable feeding method and auxiliary system.

[0005] To achieve the above purposes, the technical scheme adopted by the present application is as follows: a 3D printer flexible consumable feeding method and auxiliary system, comprising the following steps:

[0006] S1: fixing the auxiliary feeding mechanism on the top of the 3D printer, and selecting the connection mode according to the working mode:

[0007] Active mode: connecting the power interface of the auxiliary feeding mechanism to the power supply terminal of the 3D printer, and establishing communication connection between the signal interface of the auxiliary feeding mechanism and the main control unit of the 3D printer to realize the linkage feedback of the feeding state and the printing state;

[0008] Passive mode: only connect the power interface of the auxiliary feeding mechanism to the power supply terminal, without establishing communication connection with the 3D printer;

[0009] S2: The flexible filament is inserted into the feed port of the auxiliary feeding mechanism, triggering the material breakage detection sensor built into the auxiliary feeding mechanism; then press the manual feeding handle of the auxiliary feeding mechanism to widen the clamping gap of the filament conveying module, manually push the filament ...

[0010] S3: Activate the working mode corresponding to the auxiliary feeding mechanism, and at the same time control the 3D printer to start the flexible consumable printing program;

[0011] S4: During the printing process, if the trigger sensor detects a pulling force in the A-section filament (the filament filament between the auxiliary feeding mechanism's outlet and the 3D printer's extruder), the drive motor of the auxiliary feeding mechanism will be immediately activated. The drive motor will drive the filament conveying module to transport subsequent filaments towards the A-section filament, keeping the A-section filament in a state free from pulling and deformation. At the same time, by utilizing the auxiliary feeding mechanism's location at the top of the 3D printer, the filament's own gravity will be used to help reduce extrusion resistance, ensuring stable extrusion flow and avoiding problems such as filament not being able to be extruded, insufficient output, and surface quality defects.

[0012] If the material shortage detection sensor triggers a material shortage signal, the auxiliary feeding mechanism will immediately issue a material shortage alarm signal and suspend the feeding action. After the flexible consumables are manually replenished, it will return to S2 to resume the feeding operation.

[0013] S5: If the 3D printer is detected to have completed the printing program, the auxiliary feeding mechanism will be controlled to stop the drive motor and the machine will be stopped.

[0014] Preferably, the active mode in S1, "establishing a communication connection between the signal interface of the auxiliary feeding mechanism and the main control unit of the 3D printer", specifically means: connecting the signal interface of the auxiliary feeding mechanism to the serial port and USB interface of the main control unit of the 3D printer through a data cable to realize the signal interaction between the feeding status and the printing status.

[0015] Preferably, the "material breakage detection sensor" and "trigger sensor" in S2 and S4 are both micro switches or photoelectric sensors; if a photoelectric sensor is used, the presence of consumables is determined by detecting the state of light blocking by the consumable filament, and the pulling action is determined by detecting the positional shift of the consumable filament and the corresponding changes in light reflection and blocking.

[0016] Preferably, the working mode of the consumable conveying module in S4 is as follows: the output end of the drive motor is connected to the drive wheel, the extrusion wheel meshes with the drive wheel, both wheel surfaces are provided with anti-slip teeth, and the gap between them is adapted to the diameter of the flexible consumable. The consumable filament is clamped by the teeth of the drive wheel and the extrusion wheel to achieve slip-free conveying.

[0017] Preferably, in S4, the material feeding speed in active mode is adapted to the material consumption speed of the 3D printer extruder, and the controller of the auxiliary feeding mechanism receives the extrusion speed signal of the 3D printer in real time and dynamically adjusts the speed of the drive motor; in passive mode, the material feeding is started after the trigger sensor detects the pulling force, and is stopped after the material in section A is released from the pulling state.

[0018] Preferably, the manual replenishment of flexible consumables in S4 specifically involves: installing a new flexible consumable tray onto the consumable rack, inserting the free end of the consumable filament from the feed port and triggering the material breakage detection sensor, then pressing the manual feeding handle to widen the clamping gap, manually pushing the consumable filament to the discharge port to connect with the extruder, and releasing the manual feeding handle to complete the replenishment.

[0019] Preferred, including:

[0020] Drive module: includes drive motor and motor controller. The motor controller is used to receive drive signals from the control module and adjust the speed and start / stop status of the drive motor. The output end of the drive motor is equipped with a power output component.

[0021] The detection module includes a trigger sensor, a material breakage detection sensor, and a signal processing unit. The trigger sensor is set for the A-segment consumable (the filament between the auxiliary feeding mechanism outlet and the 3D printer extruder) and is used to detect the pulling action of the A-segment consumable and output a trigger signal. The material breakage detection sensor is set for the feed inlet and is used to detect the presence of consumable and material breakage abnormalities and output a material breakage signal. The signal processing unit converts the sensor signals into electrical signals that the control module can recognize.

[0022] Manual feeding module: includes a feeding handle and a return spring. The feeding handle and the return spring are elastically connected. Pressing the feeding handle can drive the clamping gap between the drive wheel and the extrusion wheel of the consumable conveying module to expand, making it easier to manually push the consumable wire. After releasing, the handle is reset by the return spring.

[0023] Consumable conveying module: includes a drive wheel, an extrusion wheel and a conveying channel. The drive wheel is connected to the power output component of the drive motor. The extrusion wheel meshes with the drive wheel and both wheel surfaces are provided with anti-slip teeth. The conveying channel runs through the inlet to the outlet and is used to limit the conveying path of the consumable filament.

[0024] Control module: Includes main control chip and signal interface. The main control chip is electrically connected to the motor controller of the drive module and the signal processing unit of the detection module, respectively, and is used to receive detection signals and output drive control signals. The signal interface is used to establish a communication connection with the main control unit of the 3D printer in active mode to realize the linkage feedback between printing status and feeding status.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) In this invention, the flexible consumable material is relatively soft, and relying solely on the extruder to pull it can easily lead to quality problems such as insufficient output, surface spots, and gaps. This method reduces extrusion resistance by using an auxiliary feeding mechanism positioned at the top and the consumable material itself to assist with gravity. At the same time, it is equipped with a trigger sensor to detect the pulling state of the consumable material in section A. Once the pulling force is detected, the consumable material is replenished, keeping the consumable material in section A in a natural state. This avoids consumable material deformation and ensures stable extrusion flow, improving the surface quality and dimensional accuracy of the printed parts. The material breakage detection sensor can identify the consumable material status in real time. After the material breaks, it immediately triggers an audible and visual alarm and stops feeding. After manual replenishment, printing can continue directly without reprinting the completed part, reducing the waste of consumable material and printing time, and is more suitable for actual production needs.

[0027] (2) This invention supports two working modes: active and passive. In active mode, the auxiliary mechanism can receive the printer extrusion speed signal in real time and dynamically match the feeding speed to avoid material accumulation and material shortage. In passive mode, the feeding can be triggered by only detecting the pulling force, which is compatible with printers without communication interfaces. It is equipped with a manual feeding module. Pressing the feeding handle can expand the clamping gap between the drive wheel and the extrusion wheel, so that even novices can easily push the material without having to force it. After releasing the handle, the reset spring automatically resets the gap to the appropriate size, without the need for manual adjustment. The anti-slip teeth of the drive wheel and the extrusion wheel are adapted to the diameter of the material, which can stably bite the flexible material. Even if the surface of the material is slightly smooth and deformed, it can avoid the slippage problem of "the wheel turns but the material does not move", and at the same time reduce the risk of material jamming and material breakage. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall process of the present invention. Detailed Implementation

[0029] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0031] It should be noted that the terms "first" and "second" in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] One preferred embodiment of the present invention, such as Figure 1 As shown, a method and auxiliary system for feeding flexible filaments in a 3D printer includes the following steps:

[0033] S1: Fix the auxiliary feeding mechanism to the top of the 3D printer, and select the connection method according to the working mode:

[0034] Active mode: Connect the power interface of the auxiliary feeding mechanism to the power supply terminal of the 3D printer, and at the same time establish a communication connection between the signal interface of the auxiliary feeding mechanism and the main control unit of the 3D printer to realize the linkage feedback between the feeding status and the printing status.

[0035] Passive mode: Only connects the power interface of the auxiliary feeding mechanism to the power supply end, and does not establish a communication connection with the 3D printer;

[0036] S2: The flexible filament is inserted into the feed port of the auxiliary feeding mechanism, triggering the material breakage detection sensor built into the auxiliary feeding mechanism; then press the manual feeding handle of the auxiliary feeding mechanism to widen the clamping gap of the filament conveying module, manually push the filament ...

[0037] S3: Activate the working mode corresponding to the auxiliary feeding mechanism, and at the same time control the 3D printer to start the flexible consumable printing program;

[0038] S4: During the printing process, if the trigger sensor detects a pulling force in the A-section filament (the filament filament between the auxiliary feeding mechanism's outlet and the 3D printer's extruder), the drive motor of the auxiliary feeding mechanism will be immediately activated. The drive motor will drive the filament conveying module to transport subsequent filaments towards the A-section filament, keeping the A-section filament in a state free from pulling and deformation. At the same time, by utilizing the auxiliary feeding mechanism's location at the top of the 3D printer, the filament's own gravity will be used to help reduce extrusion resistance, ensuring stable extrusion flow and avoiding problems such as filament not being able to be extruded, insufficient output, and surface quality defects.

[0039] If the material shortage detection sensor triggers a material shortage signal, the auxiliary feeding mechanism will immediately issue a material shortage alarm signal and suspend the feeding action. After the flexible consumables are manually replenished, it will return to S2 to resume the feeding operation.

[0040] S5: If the 3D printer is detected to have completed the printing program, the auxiliary feeding mechanism will be controlled to stop the drive motor and the machine will be stopped.

[0041] In S1, the active mode's "establishing a communication connection between the signal interface of the auxiliary feeding mechanism and the main control unit of the 3D printer" specifically means: connecting the signal interface of the auxiliary feeding mechanism to the serial port and USB interface of the main control unit of the 3D printer via a data cable to realize signal interaction between the feeding status and the printing status.

[0042] The "material breakage detection sensor" and "trigger sensor" in S2 and S4 are both microswitches or photoelectric sensors. If a photoelectric sensor is used, the presence of consumables is determined by detecting the state of light blocking by the consumable filament, and the pulling action is determined by detecting the positional shift of the consumable filament and the corresponding changes in light reflection and blocking.

[0043] The working principle of the consumable conveying module in S4 is as follows: the output end of the drive motor is connected to the drive wheel, the extrusion wheel meshes with the drive wheel, both wheels have anti-slip teeth, and the gap between them is adapted to the diameter of the flexible consumable. The consumable filament is clamped by the teeth of the drive wheel and the extrusion wheel to achieve slip-free conveying.

[0044] In S4, the filament feeding speed in active mode is adapted to the filament consumption speed of the 3D printer extruder. The controller of the auxiliary feeding mechanism receives the extrusion speed signal of the 3D printer in real time and dynamically adjusts the speed of the drive motor. In passive mode, the filament feeding is started after the trigger sensor detects the tension and stops after the tension is released when the filament in section A is fed.

[0045] The manual replenishment of flexible consumables in S4 is as follows: Install a new flexible consumable tray on the consumable rack, put the free end of the consumable filament into the feed port and trigger the material breakage detection sensor, then press the manual feeding handle to expand the clamping gap, manually push the consumable filament to the discharge port to connect with the extruder, and release the manual feeding handle to complete the replenishment.

[0046] include:

[0047] Drive module: includes drive motor and motor controller. The motor controller is used to receive drive signals from the control module and adjust the speed and start / stop status of the drive motor. The output end of the drive motor is equipped with a power output component.

[0048] The detection module includes a trigger sensor, a material breakage detection sensor, and a signal processing unit. The trigger sensor is set for the A-segment consumable (the filament between the auxiliary feeding mechanism outlet and the 3D printer extruder) and is used to detect the pulling action of the A-segment consumable and output a trigger signal. The material breakage detection sensor is set for the feed inlet and is used to detect the presence of consumable and material breakage abnormalities and output a material breakage signal. The signal processing unit converts the sensor signals into electrical signals that the control module can recognize.

[0049] Manual feeding module: includes a feeding handle and a return spring. The feeding handle and the return spring are elastically connected. Pressing the feeding handle can drive the clamping gap between the drive wheel and the extrusion wheel of the consumable conveying module to expand, making it easier to manually push the consumable wire. After releasing, the handle is reset by the return spring.

[0050] Consumable conveying module: includes a drive wheel, an extrusion wheel and a conveying channel. The drive wheel is connected to the power output component of the drive motor. The extrusion wheel meshes with the drive wheel and both wheel surfaces are provided with anti-slip teeth. The conveying channel runs through the inlet to the outlet and is used to limit the conveying path of the consumable filament.

[0051] Control module: Includes main control chip and signal interface. The main control chip is electrically connected to the motor controller of the drive module and the signal processing unit of the detection module, respectively, and is used to receive detection signals and output drive control signals. The signal interface is used to establish a communication connection with the main control unit of the 3D printer in active mode to realize the linkage feedback between printing status and feeding status.

[0052] Working principle:

[0053] During use, fix the auxiliary feeding mechanism to the top mounting position of the 3D printer. Select the working mode according to your needs to complete the connection. Active mode: Connect the auxiliary mechanism's power interface to the printer's power supply terminal to draw power. At the same time, use a data cable to connect its signal interface to the serial port and USB interface of the printer's main control unit to achieve bidirectional signal interaction between "feeding status - printing status" and "printing command - feeding action" to complete the linkage control setup. Passive mode: Only connect the auxiliary mechanism's power interface to the power supply terminal, without establishing a communication connection, suitable for printers without a communication interface. Install the flexible filament tray on the filament rack of the auxiliary mechanism, press the feed handle of the manual feeding module (compressing the return spring), and the clamping gap between the drive wheel and the extrusion wheel will widen. Insert the free end of the filament into the feed port, triggering the material breakage detection sensor at the feed port. Manually push the filament along the internal conveying channel (the channel limits the filament's direction) until the filament extends from the discharge port and enters the feed end of the 3D printer's extruder. Release the feed handle, the return spring will automatically reset, and the clamping gap will return to the size adapted to the filament diameter.

[0054] Activating the corresponding working mode of the auxiliary mechanism, the printer synchronously starts the printing program. Active mode: The auxiliary mechanism controller receives the printer extrusion speed signal in real time; if the A-section filament experiences a pulling force due to changes in extrusion speed, the sensor is triggered to capture the tension change and output a signal, driving the motor to start, which drives the power output component, drive wheel, and extrusion wheel to rotate synchronously, and feeds the B-section filament to the A-section by clamping it with anti-slip teeth; the controller dynamically adjusts the motor speed to match the feeding speed with the extrusion speed, and combined with the gravity assistance of the filament in the top layout, ensures that the A-section filament is not pulled or deformed; Passive mode: After the trigger sensor detects the pulling force of the A-section filament, the drive motor starts feeding until the A-section filament is released from the pulling state, and then pauses, maintaining the natural state of the A-section filament in a cycle.

[0055] During printing, if the material shortage detection sensor fails to detect the consumables, an audible and visual alarm is immediately triggered and the feeding is paused. Manual material replenishment (repeating the consumables docking steps) allows printing to resume. After the printer completes the printing program, it receives a printing completion signal in active mode and detects that the extruder has stopped operating in passive mode. In both modes, the auxiliary mechanism controls the drive motor to stop, thus ending the process.

[0056] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A method for feeding flexible filament into a 3D printer, characterized in that, Includes the following steps: S1: Fix the auxiliary feeding mechanism to the top of the 3D printer, and select the connection method according to the working mode: Active mode: Connect the power interface of the auxiliary feeding mechanism to the power supply terminal of the 3D printer, and at the same time establish a communication connection between the signal interface of the auxiliary feeding mechanism and the main control unit of the 3D printer to realize the linkage feedback between the feeding status and the printing status. Passive mode: Only connects the power interface of the auxiliary feeding mechanism to the power supply end, and does not establish a communication connection with the 3D printer; S2: The flexible filament is inserted into the feed port of the auxiliary feeding mechanism, triggering the material breakage detection sensor built into the auxiliary feeding mechanism; then press the manual feeding handle of the auxiliary feeding mechanism to widen the clamping gap of the filament conveying module, manually push the filament ... S3: Activate the working mode corresponding to the auxiliary feeding mechanism, and at the same time control the 3D printer to start the flexible consumable printing program; S4: During the printing process, if the trigger sensor detects a pulling force in the A-section filament (the filament filament between the auxiliary feeding mechanism's outlet and the 3D printer's extruder), the drive motor of the auxiliary feeding mechanism will be immediately activated. The drive motor will drive the filament conveying module to transport subsequent filaments towards the A-section filament, keeping the A-section filament in a state free from pulling and deformation. At the same time, by utilizing the auxiliary feeding mechanism's location at the top of the 3D printer, the filament's own gravity will be used to help reduce extrusion resistance, ensuring stable extrusion flow and avoiding problems such as filament not being able to be extruded, insufficient output, and surface quality defects. If the material shortage detection sensor triggers a material shortage signal, the auxiliary feeding mechanism will immediately issue a material shortage alarm signal and suspend the feeding action. After the flexible consumables are manually replenished, it will return to S2 to resume the feeding operation. S5: If the 3D printer is detected to have completed the printing program, the auxiliary feeding mechanism will be controlled to stop the drive motor and the machine will be stopped.

2. The method for feeding flexible filament for a 3D printer as described in claim 1, characterized in that: The active mode in S1, "establishing a communication connection between the signal interface of the auxiliary feeding mechanism and the main control unit of the 3D printer", specifically means: connecting the signal interface of the auxiliary feeding mechanism to the serial port and USB interface of the main control unit of the 3D printer through a data cable to realize the signal interaction between the feeding status and the printing status.

3. The method for feeding flexible filament for a 3D printer as described in claim 1, characterized in that: The "material breakage detection sensor" and "trigger sensor" in S2 and S4 are both micro switches or photoelectric sensors. If a photoelectric sensor is used, the presence of consumables is determined by detecting the state of light blocking by the consumable filament, and the pulling action is determined by detecting the positional shift of the consumable filament and the corresponding changes in light reflection and blocking.

4. A method for feeding flexible filament for a 3D printer as described in claim 1, characterized in that: The working method of the consumable conveying module in S4 is as follows: the output end of the drive motor is connected to the drive wheel, the extrusion wheel meshes with the drive wheel, both wheel surfaces are provided with anti-slip teeth, and the gap between them is adapted to the diameter of the flexible consumable. The consumable filament is clamped by the teeth of the drive wheel and the extrusion wheel to achieve slip-free conveying.

5. A method for feeding flexible filament for a 3D printer as claimed in claim 1, characterized in that: In S4, the material feeding speed in active mode is adapted to the material consumption speed of the 3D printer extruder. The controller of the auxiliary feeding mechanism receives the extrusion speed signal of the 3D printer in real time and dynamically adjusts the speed of the drive motor. In passive mode, the material feeding is started after the trigger sensor detects the pulling force and stops after the material in section A is released from the pulling state.

6. A method for feeding flexible filament for a 3D printer as claimed in claim 1, characterized in that: The manual replenishment of flexible consumables in S4 is specifically as follows: a new flexible consumable tray is installed on the consumable rack, the free end of the consumable filament is inserted from the feed port and the material breakage detection sensor is triggered, then the manual feeding handle is pressed to expand the clamping gap, the consumable filament is manually pushed to the discharge port to connect with the extruder, and the manual feeding handle is released to complete the replenishment.

7. A 3D printer flexible filament feeding auxiliary system, characterized in that: include: Drive module: includes drive motor and motor controller. The motor controller is used to receive drive signals from the control module and adjust the speed and start / stop status of the drive motor. The output end of the drive motor is equipped with a power output component. The detection module includes a trigger sensor, a material breakage detection sensor, and a signal processing unit. The trigger sensor is set for the A-segment consumable (the filament between the auxiliary feeding mechanism outlet and the 3D printer extruder) and is used to detect the pulling action of the A-segment consumable and output a trigger signal. The material breakage detection sensor is set for the feed inlet and is used to detect the presence of consumable and material breakage abnormalities and output a material breakage signal. The signal processing unit converts the sensor signals into electrical signals that the control module can recognize. Manual feeding module: includes a feeding handle and a return spring. The feeding handle and the return spring are elastically connected. Pressing the feeding handle can drive the clamping gap between the drive wheel and the extrusion wheel of the consumable conveying module to expand, making it easier to manually push the consumable wire. After releasing, the handle is reset by the return spring. Consumable conveying module: includes a drive wheel, an extrusion wheel and a conveying channel. The drive wheel is connected to the power output component of the drive motor. The extrusion wheel meshes with the drive wheel and both wheel surfaces are provided with anti-slip teeth. The conveying channel runs through the inlet to the outlet and is used to limit the conveying path of the consumable filament. Control module: Includes main control chip and signal interface. The main control chip is electrically connected to the motor controller of the drive module and the signal processing unit of the detection module, respectively, and is used to receive detection signals and output drive control signals. The signal interface is used to establish a communication connection with the main control unit of the 3D printer in active mode to realize the linkage feedback between printing status and feeding status.

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