Integrated consumable state detection extruder for 3D printer

Abstract

The utility model relates to the technical field of 3D (three-dimensional) printers, in particular to an integrated consumable state detection extruder for a 3D printer, which comprises an extrusion mechanism and a detection mechanism, the detection mechanism comprises a main body rack, a magnetic shaft assembly arranged in the main body rack and a detection plate connected with the main body rack, the main body rack is provided with a feeding channel and a discharging channel which are vertically communicated, and the magnetic shaft assembly is arranged between the feeding channel and the discharging channel and abuts against the wire rod; the detection plate is provided with a magnetic detection element corresponding to the position of the magnetic shaft assembly, and the magnetic detection element is used for detecting a magnetic signal generated by the magnetic shaft assembly. According to the utility model, the consumption state of the wire can be automatically detected, and the technical problems that the existing extruder cannot accurately meter the extrusion amount of the wire and cannot automatically detect the abnormal operation of the extruder can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to an integrated consumable state detection extruder for a 3D printer. Background Art

[0002] 3D printing is a rapid prototyping technology that uses digital model files as the basis, and uses special wax materials, powdered metals or plastics and other bondable materials to create three-dimensional objects by stacking and accumulating them layer by layer. Traditional 3D printers usually use fused deposition modeling (FDM), using a filament extruder to provide thermoplastic wire to the print head, and then the filament is heated and melted in the print head and deposited on the work platform.

[0003] When using a 3D printer using FDM technology, the consumables enter the consumable extruder from the feed port and are pushed and squeezed by two gears to complete the extrusion of the consumables. The limitations of traditional FDM 3D printers in extrusion control are gradually emerging: there is a lack of fine-tuning ability for the extrusion amount of consumables and an intelligent monitoring system for real-time consumable status. This means that in the face of common faults that may be encountered during the printing process, such as wire breakage, insufficient feed or nozzle blockage, the system cannot autonomously identify and respond immediately, and relies on manual intervention to diagnose and solve these problems. This not only greatly increases the complexity and time cost of the operation, but may also lead to quality defects in the final printed product. In severe cases, it may even directly interrupt the printing operation, affecting overall efficiency and production continuity.

[0004] Therefore, optimizing 3D printing technology, especially enhancing its intelligence level, such as integrating high-precision extrusion control modules and intelligent consumables management systems, has become the key to improving printing efficiency and finished product quality. By introducing sensors to monitor the status of consumables in real time, developing algorithms to accurately calculate and control the amount of material extrusion, and realizing automatic fault detection and alarm functions, the need for human intervention can be significantly reduced, making 3D printing more automated, efficient and reliable, and further broadening its application potential in personalized manufacturing, rapid prototyping and even direct digital manufacturing. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an integrated consumable status detection extruder for a 3D printer, which can automatically detect whether the extruder is broken or blocked during operation, accurately measure the usage length of the wire to determine the remaining consumables, reduce the waste of consumables, and improve printing efficiency. It can effectively solve the technical problems of the existing 3D printer extruder that cannot accurately measure the wire extrusion amount and cannot automatically detect the existence of extruder faults.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] In a technical solution of the utility model, an integrated consumable state detection extruder for a 3D printer is provided, comprising an extrusion mechanism and a detection mechanism, wherein the extrusion mechanism is used to extrude wire;

[0008] The detection mechanism includes a main frame, a magnetic axis assembly arranged inside the main frame, and a detection plate connected to the main frame. The main frame is provided with a feed channel and a discharge channel that are vertically connected. The magnetic axis assembly is arranged between the feed channel and the discharge channel and abuts against the wire. The detection board is provided with a magnetic detection element corresponding to the position of the magnetic axis assembly, which is used to detect the magnetic signal generated by the magnetic axis assembly.

[0009] In the above technical solution, the wire passes through the feed channel and abuts against the magnetic axis assembly, passes through the discharge channel, and is extruded through the extrusion mechanism. During the movement of the wire, the magnetic axis assembly is driven to rotate, and the magnetic detection element is used to detect the magnetic signal generated by the magnetic axis assembly.

[0010] Furthermore, the magnetic axis assembly includes a swing arm frame, a roller, a rotating shaft and a magnetic axis. The upper part of the swing arm frame is rotatably connected to the upper part of the main frame by passing through the swing arm shaft. The lower part of the swing arm frame is provided with a rotating shaft parallel to the swing arm shaft. The outer part of the rotating shaft is sleeved with a roller. A plurality of magnetic axes and an annular groove are evenly spaced on the circumferential side of the roller. A small bearing is sleeved between the roller and the rotating shaft, and the annular groove abuts against the wire. When the wire moves downward and is extruded under the action of the extrusion mechanism, the abutting annular groove can drive the roller and the magnetic axis to rotate around the rotating shaft, and the magnetic detection element can detect intermittent magnetic signals, and the intermittent frequency can be converted into the distance the wire passes, thereby obtaining the consumed length of the wire.

[0011] Furthermore, a limit shaft and a torsion spring shaft are provided on the upper part of the main frame, a torsion spring is provided on the torsion spring shaft, and the two ends of the torsion spring respectively abut the limit shaft and the swing arm frame. The torsion spring makes the swing arm frame always have a driving force to the inner side of the main frame to ensure that the annular groove on the roller always abuts against the wire, thereby ensuring the sensitivity of the roller rotation driven by the wire movement, and improving the accuracy of the magnetic detection element detecting the magnetic signal generated by the rotation of the magnetic axis around the rotating axis.

[0012] Furthermore, it also includes a shell, and the detection mechanism is arranged inside the shell and fixedly connected to the shell through a main frame.

[0013] Further, the extrusion mechanism includes an extrusion motor and a transmission assembly, and the output shaft of the extrusion motor is connected to the transmission assembly;

[0014] The transmission assembly includes an input gear, a primary gear, a secondary gear, a gear shaft 1, a driven gear and a gear shaft 2. The input gear is fixedly connected to the output shaft of the extrusion motor, the primary gear and the secondary gear are coaxially fixed on the gear shaft 1 to form a synchronous linkage, the primary gear and the input gear are meshed with each other, the secondary gear and the driven gear are meshed with each other, the driven gear is fixed on the gear shaft 2 to form a synchronous linkage, and the wire is abutted between the gear shaft 1 and the gear shaft 2. The input gear is driven by the extrusion motor to rotate synchronously with the output shaft of the extrusion motor, the primary gear rotates through meshing transmission, the secondary gear and the gear shaft 1 are synchronously driven to rotate synchronously, and then the driven gear and the gear shaft 2 are driven to rotate synchronously through meshing transmission.

[0015] Furthermore, the gear shaft 1 and the gear shaft 2 are both provided with wire slots, and when the secondary gear is meshed with the driven gear, the two wire slots are provided on opposite sides of the wire. The wire is clamped by the wire slots, and when the extrusion motor drives the secondary gear to mesh with the driven gear, the gear shaft 1 and the gear shaft 2 rotate in opposite directions, so that the two wire slots simultaneously push the wire downward, thereby driving the wire to move downward for extrusion.

[0016] Furthermore, the extrusion mechanism also includes a cantilever assembly, which includes a cantilever and a support shaft passing through the middle of the cantilever, the second gear shaft is sleeved on the outside of the support shaft, and a limit block is provided on the inner side wall of the shell, and a spring is connected to the limit block, the spring is in contact with the cantilever, and the top of the cantilever extends out of the shell. The elastic force of the spring can make the cantilever and the driven gear always have a driving force toward the secondary gear side, ensuring that the secondary gear and the driven gear are tightly meshed, and ensuring that the two wire slots on the first gear and the second gear shaft are always tightly clamped with the wire.

[0017] Furthermore, a shell is arranged outside the extrusion mechanism, a shell is arranged outside the transmission assembly and the cantilever assembly, the extrusion motor is arranged outside the shell, the output shaft of the extrusion motor penetrates into the shell and is connected to the transmission assembly, and the bottom of the cantilever assembly is rotatably connected to the shell through a rotating shaft.

[0018] Furthermore, a rolling bearing is sleeved between the gear shaft 2 and the support shaft, and is rotatably connected to the support shaft through the rolling bearing to improve the rotational flexibility between the gear shaft 2 and the support shaft when the secondary gear drives the driven gear to mesh and rotate; load-bearing bearings are respectively sleeved at both ends of the gear shaft 1, and are rotatably connected to the housing through the load-bearing bearings to improve the flexibility of the active connection between the gear shaft 1 and the housing when the extrusion motor drives the primary gear, the secondary gear and the gear shaft 1 to rotate synchronously.

[0019] Furthermore, the housing includes a detachably connected main housing, a supporting housing and a front cover, and the extruder motor is fixed to the main housing. The two ends of the rotating shaft are respectively connected to the main housing and the supporting housing, the main frame is fixedly connected to the supporting housing, a feed inlet and a discharge outlet are provided on the supporting housing, and bearing slots are provided on the inner side surfaces of the main housing and the supporting housing for mounting the gear shaft 1 and the load-bearing bearing.

[0020] The beneficial effects of the utility model are as follows:

[0021] The utility model provides an integrated consumable status detection extruder for a 3D printer. When working, the wire passes through the feed port, the feed channel, the magnetic axis assembly, the discharge channel, the transmission assembly and the discharge port in sequence. The transmission assembly is driven by the extrusion motor to push the wire downward to move. During the movement of the wire, the magnetic axis assembly is driven to rotate. The magnetic detection element detects the magnetic signal generated by the magnetic axis assembly, and the intermittent frequency can be converted into the movement distance of the wire, so that the consumption of the wire can be detected in real time. At the same time, it can also be judged whether the extruder is broken or blocked according to whether the detected magnetic signal is abnormal. The use length of the wire is accurately measured to judge the remaining consumables, reduce the waste of consumables, and improve printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an integrated consumable status detection extruder for a 3D printer;

[0024] Figure 2 It is a schematic diagram of the internal structure of an extruder with integrated consumable status detection for a 3D printer;

[0025] Figure 3 This is a schematic diagram of the internal structure of the extruder with integrated consumable status detection for 3D printers from another angle;

[0026] Figure 4 This is a schematic diagram of the structural disassembly of an integrated consumable status detection extruder for a 3D printer;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the extrusion mechanism in the utility model;

[0028] Figure 6 This is a schematic diagram of the internal structure of the integrated consumable status detection extruder when the wire is installed;

[0029] Figure 7It is a schematic diagram of the structure of the integrated consumable state detection extruder of the utility model after partial sectioning;

[0030] Figure 8 It is a schematic diagram of the structure after the driven gear, gear shaft 2 and cantilever assembly in the utility model are disassembled;

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of the detection mechanism in the utility model;

[0032] Fig.10 It is a schematic diagram of the structural disassembly of the detection mechanism in the utility model;

[0033] Fig.11 It is a three-dimensional structural schematic diagram of the supporting shell in the utility model.

[0034] Explanation of the numbers in the figure: 1. Extrusion mechanism; 11. Extrusion motor; 12. Transmission assembly; 121. Input gear; 122. Primary gear; 123. Secondary gear; 124. Gear shaft one; 125. Driven gear; 126. Gear shaft two; 127. Wire slot; 128. Load bearing; 129. Rolling bearing; 13. Cantilever assembly; 131. Cantilever; 132. Support shaft; 133. Limit block; 134. Spring; 14. Rotating shaft; 2. Detection mechanism; 21. Main frame; 211. Feeding channel 1. channel; 212. discharge channel; 213. swing arm shaft; 214. open slide; 22. magnetic axis assembly; 221. swing arm frame; 222. roller; 223. rotating shaft; 224. magnetic axis; 225. annular groove; 226. limit axis; 227. torsion spring shaft; 228. torsion spring; 229. small bearing; 23. detection plate; 24. magnetic detection element; 3. shell; 31. main shell; 32. support shell; 33. front cover; 34. feed port; 35. discharge port; 36. bearing slot; 100. wire. DETAILED DESCRIPTION

[0035] The following is a specific embodiment of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, it does not mean that the features of this utility model are limited to the embodiment.

[0036] In the description of this embodiment, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front", "back" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0038] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, in one embodiment of the utility model, an integrated consumable state detection extruder for a 3D printer is provided, comprising an extrusion mechanism 1 and a detection mechanism 2, wherein the extrusion mechanism 1 is used to extrude a wire 100. Specifically, referring to Figure 2 , Figure 7 and Fig. 9 As shown, the detection mechanism 2 includes a main frame 21, a magnetic axis assembly 22 arranged inside the main frame 21, and a detection plate 23 connected to the main frame 21. The main frame 21 is provided with a feed channel 211 and a discharge channel 212 that are vertically connected. The magnetic axis assembly 22 is arranged between the feed channel 211 and the discharge channel 212 and abuts against the wire 100. A magnetic detection element 24 corresponding to the position of the magnetic axis assembly 22 is provided on the detection plate 23, which is used to detect the magnetic signal generated by the magnetic axis assembly 22. During operation, the wire 100 passes through the feed channel 211 and abuts against the magnetic axis assembly 22, passes through the discharge channel 212, and is extruded through the extrusion mechanism 1. The magnetic axis assembly 22 is driven to rotate during the movement of the wire 100. The magnetic detection element 24 is used to detect the magnetic signal generated by the magnetic axis assembly 22.

[0040] refer to Figure 6 , Figure 7 , Fig. 9 and Fig.10 In another embodiment of the utility model, the magnetic axis assembly 22 includes a swing arm frame 221, a roller 222, a rotating shaft 223 and a magnetic axis 224. The upper part of the swing arm frame 221 is rotatably connected to the upper part of the main frame 21 by passing through the swing arm shaft 213. The lower part of the swing arm frame 221 is penetrated by a rotating shaft 223 parallel to the swing arm shaft 213. The outer part of the rotating shaft 223 is sleeved with a roller 222. A plurality of magnetic axes 224 and an annular groove 225 are evenly spaced on the circumferential side surface of the roller 222. A small bearing 229 is sleeved between the roller 222 and the rotating shaft 223, and the annular groove 225 abuts against the wire 100. When the wire 100 is moved downward and extruded by the extrusion mechanism 1, the abutment annular groove 225 can drive the roller 222 and the magnetic axis 224 to rotate around the rotating shaft 223, and the magnetic detection element 24 can detect intermittent magnetic signals, and the intermittent frequency can be converted into the distance passed by the wire 100, thereby obtaining the consumed length of the wire 100.

[0041] refer to Fig. 9 and Fig.10 The lower part of the main frame 21 is provided with an open chute 214, and the two ends of the rotating shaft 223 are located inside the open chute 214. The open chute 214 is provided to facilitate the installation and stability of the rotating shaft 223, and at the same time, it can also improve the compatibility of wire models. When wires of different thicknesses pass through and abut against the annular groove 225, the rotating shaft 223 can slide slightly in the open chute 214 to adjust the position, and the annular groove 225 can also always abut against the wire 100, thereby improving the wire compatibility of the extruder.

[0042] refer to Figure 4 , Figure 6 and Fig. 9 The upper part of the main frame 21 is provided with a limit shaft 226 and a torsion spring shaft 227, and the torsion spring shaft 227 is provided with a torsion spring 228, and the two ends of the torsion spring 228 respectively abut the limit shaft 226 and the swing arm frame 221. The torsion spring 228 makes the swing arm frame 221 always have a driving force to the inside of the main frame 21, so as to ensure that the annular groove 225 on the roller 222 is always in contact with the wire 100, thereby ensuring the sensitivity of the wire 100 to drive the roller 222 to rotate, and improving the accuracy of the magnetic detection element 24 detecting the magnetic axis 224 rotating around the rotating shaft 223 to generate a magnetic signal.

[0043] refer to Figure 1 and Figure 2 In another embodiment of the utility model, the integrated consumable status detection extruder for a 3D printer also includes a shell 3, and the detection mechanism 2 is arranged inside the shell 3 and fixedly connected to the shell 3 through a main frame 21.

[0044] refer to Figures 2 to 5In another embodiment of the utility model, the extrusion mechanism 1 includes an extrusion motor 11 and a transmission assembly 12, and the output shaft of the extrusion motor 11 is connected to the transmission assembly 12. The transmission assembly 12 includes an input gear 121, a primary gear 122, a secondary gear 123, a gear shaft 124, a driven gear 125 and a gear shaft 2 126. The input gear 121 is fixedly connected to the output shaft of the extrusion motor 11, the primary gear 122 and the secondary gear 123 are coaxially fixed on the gear shaft 124 to form a synchronous linkage, the primary gear 122 and the input gear 121 are meshed with each other, the secondary gear 123 and the driven gear 125 are meshed with each other, and the driven gear 125 is fixed on the gear shaft 2 126 to form a synchronous linkage, and the wire 100 abuts between the gear shaft 124 and the gear shaft 2 126. The two ends of the gear shaft 124 are respectively sleeved with bearing bearings 128, and the gear shaft 124 is rotatably connected to the housing 3 through the bearing bearings 128, so as to improve the flexibility of the movable connection between the gear shaft 124 and the housing 3 when the extrusion motor 11 drives the first gear 122, the second gear 123 and the gear shaft 124 to rotate synchronously. The input gear 121 is driven by the extrusion motor 11 to rotate synchronously with the output shaft of the extrusion motor 11, and the first gear 122 is rotated through meshing transmission, which synchronously drives the second gear 123 and the gear shaft 124 to rotate synchronously, and then the driven gear 125 and the gear shaft 2 126 are driven to rotate synchronously through meshing transmission.

[0045] refer to Figure 5 and Figure 6 , the gear shaft 124 and the gear shaft 2 126 are both provided with wire slots 127, and when the secondary gear 123 is meshed with the driven gear 125, the two wire slots 127 are arranged on opposite sides of the wire 100. The wire 100 is clamped by the wire slots 127, and when the extrusion motor 11 drives the secondary gear 123 to mesh with the driven gear 125, the gear shaft 124 and the gear shaft 2 126 rotate in opposite directions, so that the two wire slots 127 simultaneously push the wire 100 downward, thereby driving the wire 100 to move downward for extrusion.

[0046] refer to Figure 2 , Figure 5 and Figure 8In another embodiment of the utility model, the extrusion mechanism 1 further includes a cantilever assembly 13, which includes a cantilever 131 and a support shaft 132 passing through the middle of the cantilever 131, and the second gear shaft 126 is sleeved on the outside of the support shaft 132. A rolling bearing 129 is sleeved between the second gear shaft 126 and the support shaft 132, and the second gear shaft 126 is rotatably connected to the support shaft 132 through the rolling bearing 129, so as to improve the rotation flexibility between the second gear shaft 126 and the support shaft 132 when the secondary gear 123 drives the driven gear 125 to mesh and rotate. A limit block 133 is provided on the inner side wall of the housing 3, and a spring 134 is connected to the limit block 133, and the spring 134 abuts against the cantilever 131, and the top of the cantilever 131 extends out of the housing 3. The limit block 133 is fixedly connected to the housing 3 by a screw, and the compression distance of the spring 134 can be adjusted by screwing the position of the limit block 133. The elastic force of the spring 134 can make the cantilever 131 and the driven gear 125 always have a driving force toward the side of the secondary gear 123, ensuring that the secondary gear 123 and the driven gear 125 are tightly meshed, and ensuring that the two wire grooves 127 on the gear shaft 124 and the gear shaft 2 126 always tightly clamp the wire 100. When the extrusion motor 11 is running, the transmission is transmitted through the transmission assembly 12. When the secondary gear 123 and the driven gear 125 are meshed and rotated in the opposite direction, a large pushing force is formed on the wire 100 through the wire groove 127 to control the extrusion length of the wire 100. When installing or withdrawing the wire 100, the cantilever 131 can be pressed downward to extend out of the shell 3. The cantilever 131 compresses the spring 134 and limits the compression stroke of the spring 134 through the set limit block 133. The cantilever 131 rotates around the rotating shaft 14, thereby driving the driven gear 125 installed in the middle of the cantilever 131 to disengage from the meshing position with the secondary gear 123, increasing the distance between the two oppositely arranged wire slots 127, thereby facilitating the threading or withdrawal of the wire 100.

[0047] refer to Figures 1 to 3 In another embodiment of the utility model, a shell 3 is arranged outside the transmission assembly 12 and the cantilever assembly 13, the extrusion motor 11 is arranged outside the shell 3, the output shaft of the extrusion motor 11 penetrates into the shell 3 and is connected to the transmission assembly 12, and the bottom of the cantilever assembly 13 is rotatably connected to the shell 3 through the rotating shaft 14.

[0048] refer to Figure 1 , Figure 4 and Figure 7In another embodiment of the utility model, the housing 3 includes a detachably connected main housing 31, a supporting housing 32 and a front cover 33, and the extrusion motor 11 is fixed to the main housing 31. The main housing 31 and the supporting housing 32 are fixed together by bolts or screws, and a cavity is formed inside the main housing 31 for installing the extrusion mechanism 1 and the detection mechanism 2 except the extrusion motor 11. The two ends of the rotating shaft 14 are respectively connected to the main housing 31 and the supporting housing 32, and the main frame 21 is fixedly connected to the supporting housing 32. Fig.11 The support housing 32 is provided with a feed port 34 and a discharge port 35, which are connected to the feed channel 211 and the discharge channel 212 and are coaxial, and the wire 100 passes through the feed port 34, the feed channel 211, the discharge channel 212 and the discharge port 35 in sequence. The inner side surfaces of the main housing 31 and the support housing 32 are provided with bearing slots 36 for mounting the gear shaft 124 and the bearing bearing 128.

[0049] The integrated consumable state detection extruder for the 3D printer provided by the utility model is in operation:

[0050] By pressing down the part of the cantilever 131 extending out of the housing 3, the distance between the two wire slots 127 is increased, so that the wire 100 passes through the feed port 34, the feed channel 211, the discharge channel 212 and the discharge port 35 from top to bottom in sequence. The wire between the feed channel 211 and the discharge channel 212 abuts against the annular groove 225 on the roller 222, and the wire between the discharge channel 212 and the discharge port 35 abuts between the two wire slots 127 on the gear shaft 124 and the gear shaft 2 126.

[0051] The integrated consumable state detection extruder of the utility model can be connected to the control system of a 3D printer. The main control system of the 3D printer sends a control signal to the extrusion motor 11. The extrusion motor 11 is driven by the gear of the transmission component 12. When the secondary gear 123 is meshed with the driven gear 125, the gear shaft 124 and the gear shaft 2 126 rotate in opposite directions, so that the two wire slots 127 form a simultaneous downward pushing force on the wire 100, driving the wire 100 to move downward and extrude a certain length; in the process of the movement of the wire 100, the wire drives the multiple magnetic axes 224 evenly distributed on the roller 222 to rotate around the rotating shaft 223, and the magnetic detection element 24 can detect intermittent magnetic signals. Adjacent magnetic signals can be indirectly converted into a fixed length value and transmitted to the main control system, which can then be converted into the distance passed by the wire 100 to obtain the consumption of the wire.

[0052] The integrated consumable state detection extruder of the utility model can also judge whether the extruder has a fault according to the error between the detected magnetic signal and the control signal sent by the main control system:

[0053] (1) When no wire passes or the wire is broken, the main control system inputs a control signal to control the normal operation of the extrusion motor, and the detection mechanism does not provide any feedback to the main control system, and the consumables are judged to be abnormal;

[0054] (2) When the wire is blocked, the control signal input to the main control system is normal, and the detection mechanism does not provide any feedback to the main control system, which determines that the consumables are abnormal;

[0055] (3) When wire passes through, the main control system inputs a control signal to control the normal operation of the extrusion motor and outputs a certain length of wire. The detection mechanism indirectly calculates the wire extrusion length through the number of magnetic axis signals. When there is a difference with the main control signal, it is determined that the extruder accuracy is inaccurate and there is a difference.

[0056] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Therefore, any technical solution that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. An integrated consumable status detection extruder for a 3D printer, characterized in that: It comprises an extrusion mechanism (1) and a detection mechanism (2), wherein the extrusion mechanism (1) is used to extrude a wire material (100); The detection mechanism (2) comprises a main frame (21), a magnetic axis assembly (22) arranged inside the main frame (21), and a detection plate (23) connected to the main frame (21); the main frame (21) is provided with a feed channel (211) and a discharge channel (212) which are vertically connected; the magnetic axis assembly (22) is arranged between the feed channel (211) and the discharge channel (212) and is in contact with the wire (100); and the detection plate (23) is provided with a magnetic detection element (24) corresponding to the position of the magnetic axis assembly (22) and used to detect a magnetic signal generated by the magnetic axis assembly (22).

2. The integrated consumable state detection extruder for a 3D printer according to claim 1, characterized in that: The magnetic axis assembly (22) comprises a swing arm frame (221), a roller (222), a rotating shaft (223) and a magnetic axis (224); the upper portion of the swing arm frame (221) is rotatably connected to the upper portion of the main frame (21) by penetrating the swing arm shaft (213); the lower portion of the swing arm frame (221) is penetrated by a rotating shaft (223) parallel to the swing arm shaft (213); the outer portion of the rotating shaft (223) is sleeved with a roller (222); a plurality of magnetic axes (224) and an annular groove (225) are evenly spaced on the circumferential side surface of the roller (222); a small bearing (229) is sleeved between the roller (222) and the rotating shaft (223); and the annular groove (225) is in contact with the wire (100).

3. The integrated consumable state detection extruder for a 3D printer according to claim 2, characterized in that: A limiting shaft (226) and a torsion spring shaft (227) are passed through the upper part of the main frame (21); a torsion spring (228) is passed through the torsion spring shaft (227); and two ends of the torsion spring (228) respectively abut against the limiting shaft (226) and the swing arm frame (221).

4. The integrated consumable state detection extruder for a 3D printer according to claim 1, characterized in that: It also comprises a shell (3), wherein the detection mechanism (2) is arranged inside the shell (3) and is fixedly connected to the shell (3) via a main frame (21).

5. The integrated consumable state detection extruder for a 3D printer according to claim 1, characterized in that: The extrusion mechanism (1) comprises an extrusion motor (11) and a transmission assembly (12), wherein an output shaft of the extrusion motor (11) is connected to the transmission assembly (12); The transmission assembly (12) comprises an input gear (121), a first-stage gear (122), a second-stage gear (123), a first gear shaft (124), a driven gear (125) and a second gear shaft (126); the input gear (121) is fixedly connected to the output shaft of the extrusion motor (11); the first-stage gear (122) and the second-stage gear (123) are coaxially fixed on the first gear shaft (124) to form a synchronous linkage; the first-stage gear (122) and the input gear (121) are meshed with each other; the second-stage gear (123) and the driven gear (125) are meshed with each other; the driven gear (125) is fixed on the second gear shaft (126) to form a synchronous linkage; and the wire (100) is abutted between the first gear shaft (124) and the second gear shaft (126).

6. The integrated consumable state detection extruder for a 3D printer according to claim 5, characterized in that: The gear shaft 1 (124) and the gear shaft 2 (126) are both provided with wire material retaining grooves (127). When the secondary gear (123) is meshed with the driven gear (125), the two wire material retaining grooves (127) are disposed on opposite sides of the wire material (100).

7. The integrated consumable state detection extruder for a 3D printer according to claim 5, characterized in that: The extrusion mechanism (1) also includes a cantilever assembly (13), the cantilever assembly (13) including a cantilever (131) and a support shaft (132) passing through the middle of the cantilever (131), the gear shaft 2 (126) is sleeved on the outside of the support shaft (132), a limit block (133) is provided on the inner side wall of the shell (3), the limit block (133) is connected to a spring (134), the spring (134) is in contact with the cantilever (131), and the top of the cantilever (131) extends out of the shell (3).

8. The integrated consumable state detection extruder for a 3D printer according to claim 7, characterized in that: A housing (3) is arranged outside the transmission assembly (12) and the cantilever assembly (13); an extrusion motor (11) is arranged outside the housing (3); an output shaft of the extrusion motor (11) penetrates into the housing (3) and is connected to the transmission assembly (12); and the bottom of the cantilever assembly (13) is rotatably connected to the housing (3) via a rotating shaft (14).

9. The integrated consumable state detection extruder for a 3D printer according to claim 8, characterized in that: A rolling bearing (129) is sleeved between the gear shaft 2 (126) and the support shaft (132), and is rotatably connected to the support shaft (132) via the rolling bearing (129); and load-bearing bearings (128) are sleeved at both ends of the gear shaft 1 (124), and are rotatably connected to the housing (3) via the load-bearing bearings (128).

10. The integrated consumable status detection extruder for a 3D printer according to claim 8, characterized in that: The shell (3) comprises a main shell (31), a support shell (32) and a front cover (33) which are detachably connected. The extrusion motor (11) is fixed to the main shell (31). The two ends of the rotating shaft (14) are respectively connected to the main shell (31) and the support shell (32). The main frame (21) is fixedly connected to the support shell (32). A feed port (34) and a discharge port (35) are provided on the support shell (32). The inner side surfaces of the main shell (31) and the support shell (32) are both provided with bearing slot holes (36).

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