A 3D printing device with an automatic filament breakage monitoring function

Abstract

The utility model provides a kind of 3D printing device of automatic material breaking monitoring function, belong to 3D printing technical field, to solve the existing 3D printing device, infrared sensor is easy to misjudge due to dust, volatile attachment, need frequent maintenance, and easy to be impacted detection accuracy by collision. Including mechanical frame, printing platform, drive mechanism, extrusion mechanism, extrusion nozzle, monitoring frame body, monitoring component and protection component, the printing platform is installed in mechanical frame inside;The drive mechanism is installed in mechanical frame inside;The extrusion mechanism is installed in drive mechanism front side;The extrusion nozzle is threadedly connected in extrusion mechanism bottom;The monitoring frame body is fixedly installed in extrusion mechanism bottom;The monitoring component is arranged in monitoring frame body inside;The protection component is arranged in monitoring frame body inside.The utility model has multiple protection, convenient to use, with advantages such as easy maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, and more specifically, it relates to a 3D printing device with automatic material breakage monitoring function. Background Technology

[0002] Fused deposition modeling (FDM) is a common 3D printing technology. Its working principle involves heating and melting a filament of thermoplastic material, extruding it through a nozzle, and depositing it layer by layer onto a printing platform to form a three-dimensional object. Existing 3D printing equipment mainly consists of a mechanical frame, a printing platform, a nozzle assembly, a feeding mechanism, and a control system. The mechanical frame supports the overall structure, the printing platform carries the model, the nozzle assembly melts and extrudes the material, the feeding mechanism delivers the filament, and the control system coordinates its operation.

[0003] Existing application number CN202222447358.1 discloses a monitoring device for printing consumables and a 3D printer, including a housing, a signal wheel, a rotating shaft, and a sensor. The rotating shaft is rotatably disposed inside the housing, and the signal wheel is connected to the rotating shaft. The sensor is disposed on the housing and is used to monitor the rotational speed of the signal wheel. The housing has a consumable hole perpendicular to the rotating shaft, through which printing consumables pass. The consumable hole has a slot in the middle. A driven wheel is also disposed on the rotating shaft, and the driven wheel abuts against the printing consumables through the slot. When the printing consumables are fed, the driven wheel rotates. This monitoring device for printing consumables can monitor the flow rate of printing consumables while also monitoring whether the consumables are interrupted or blocked, and is not limited by the transparency of the material. The monitoring device has a compact structure, simple design, and is easy to install and disassemble, which is beneficial for subsequent maintenance.

[0004] Based on the above, existing 3D printing devices experience printing interruptions due to consumable supply anomalies, such as running out of filament, breakage, or jamming. Most devices rely on infrared sensors to monitor filament and prevent breakage; however, the nozzle's heat dissipation easily attracts dust, and high-temperature volatiles during PLA and ABS printing condense on the sensor surface. Filament debris from PETG or lubricant can also adhere to the detection surface, weakening the infrared signal and causing misjudgments, requiring frequent maintenance. Furthermore, after printing, cleaning, adjusting, or changing the filament can easily cause tools or hands to bump into the sensor, affecting detection accuracy. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides a 3D printing device with an automatic filament supply monitoring function. This solves the problem of printing interruptions caused by abnormal filament supply, such as filament depletion, breakage, or jamming, in existing 3D printing devices. Most devices use infrared sensors to monitor filament supply and prevent breakage; however, the nozzle's heat dissipation easily attracts dust, and high-temperature volatiles condense on the sensor surface during PLA and ABS printing. Filament debris or lubricant from PETG and other materials can also adhere to the detection surface, weakening the infrared signal and leading to false readings, requiring frequent maintenance. Furthermore, after printing, cleaning, adjusting, or changing the filament can cause tools or hands to bump into the sensor, affecting detection accuracy.

[0006] The purpose and effectiveness of this utility model's 3D printing device with automatic material breakage monitoring function are achieved through the following specific technical means:

[0007] A 3D printing device with automatic material breakage monitoring function includes a mechanical frame, a printing platform, a drive mechanism, an extrusion mechanism, an extrusion nozzle, a monitoring frame, a monitoring component, and a protective component. The printing platform is installed inside the mechanical frame; the drive mechanism is installed inside the mechanical frame; the extrusion mechanism is installed in front of the drive mechanism; the extrusion nozzle is threadedly connected to the bottom of the extrusion mechanism; the monitoring frame is fixedly installed at the bottom of the extrusion mechanism; the monitoring component is disposed inside the monitoring frame; and the protective component is disposed inside the monitoring frame.

[0008] Furthermore, the monitoring component includes: a mounting slot and a ramp frame. The mounting slot is provided in two sets, which are located on both sides inside the monitoring frame. The ramp frame is provided in two sets, which are slidably connected to the two sets of mounting slots.

[0009] Furthermore, the monitoring component also includes: an infrared generator, an infrared receiver, and a ramp groove. The infrared generator is slidably connected to the inside of a set of ramp frames, and the infrared generator is vertically slidably connected to the inside of a set of mounting grooves. The infrared receiver is slidably connected to the inside of another set of ramp frames, and the infrared receiver is vertically slidably connected to the inside of another set of mounting grooves. Two sets of ramp grooves are provided, and the two sets of ramp grooves are respectively opened on the infrared generator and the infrared receiver.

[0010] Furthermore, the monitoring component also includes an electromagnet and a transmission plate. Two sets of electromagnets are provided, and the two sets of electromagnets are fixedly installed inside the monitoring frame. The transmission plate is slidably connected inside the monitoring frame.

[0011] Furthermore, the monitoring component also includes: a transmission rod and a return spring. The transmission rod is provided in two sets, which are slidably connected to both sides inside the monitoring frame and are fixedly installed on the left and right sides of the transmission plate. The return spring is provided in two sets, with one end of each set fixedly installed on one side of the two inclined planes and the other end fixedly installed inside the two mounting slots.

[0012] Furthermore, the protective assembly includes: a protective plate and a soft nylon brush. Two sets of the protective plates are provided, and the two sets of the protective plates are fixedly installed on the front side of the two sets of inclined frames. Two sets of the soft nylon brushes are provided, and the two sets of the soft nylon brushes are fixedly installed on the inner side of the two sets of protective plates.

[0013] Furthermore, the protective assembly also includes: a corrugated cover, wherein two sets of the corrugated cover are provided, the two sets of the corrugated cover are fixedly installed inside the two sets of mounting slots, and the two sets of the corrugated cover are fixedly installed on one side of the two sets of inclined frames.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Firstly, this invention features a monitoring component that uses an electromagnet and a return spring to automatically extend and retract the infrared generator and receiver. During printing, the electromagnet is energized, driving a transmission structure to push the sensor out of its mounting slot, ensuring real-time monitoring of the wire. When the machine stops, the sensor automatically retracts into the mounting slot, preventing accuracy deviations caused by external collisions and solving the problem of easy damage from fixed installations of traditional sensors.

[0016] Secondly, this invention features a protective assembly, forming multiple layers of protection through a protective plate, a soft nylon brush, and a corrugated cover. The protective plate isolates the sensor from dust and external forces when it is stored; the soft nylon brush automatically cleans the detection surface as the sensor extends and retracts, reducing the adhesion of volatile materials and debris; the corrugated cover seals the inside of the mounting groove, further preventing dust intrusion, effectively reducing signal interference and false judgment rate, and reducing maintenance frequency.

[0017] This utility model has the advantages of multiple protections, ease of use, and convenient maintenance. It effectively protects the sensor and avoids damage that could affect accuracy. At the same time, it protects against the influence of external impurities when the machine is stopped. While ensuring printing continuity, it reduces manual maintenance costs and improves the overall stability and reliability of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the extrusion mechanism of this utility model.

[0020] Figure 3This is a schematic diagram of the monitoring frame structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the mounting groove structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the monitoring frame of this utility model.

[0023] Figure 6 This is a schematic diagram of the inclined frame structure of this utility model.

[0024] Figure 7 This is a schematic diagram of the infrared generator structure of this utility model.

[0025] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0026] 1. Mechanical frame; 2. Printing platform; 3. Drive mechanism; 4. Extrusion mechanism; 5. Extrusion nozzle; 6. Monitoring frame; 601. Mounting slot; 602. Infrared generator; 603. Infrared receiver; 604. Inclined groove; 605. Inclined frame; 606. Protective plate; 6061. Soft nylon brush; 607. Corrugated cover; 608. Transmission plate; 6081. Transmission rod; 6082. Return spring; 609. Electromagnet. Detailed Implementation

[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0028] Example 1:

[0029] As attached Figure 1 To be continued Figure 7 As shown:

[0030] This utility model provides a 3D printing device with automatic material breakage monitoring function, including a mechanical frame 1, a printing platform 2, a drive mechanism 3, an extrusion mechanism 4, an extrusion nozzle 5, a monitoring frame 6, and a monitoring component. The printing platform 2 is installed inside the mechanical frame 1; the drive mechanism 3 is installed inside the mechanical frame 1; the extrusion mechanism 4 is installed on the front side of the drive mechanism 3; the extrusion nozzle 5 is threadedly connected to the bottom of the extrusion mechanism 4; the monitoring frame 6 is fixedly installed at the bottom of the extrusion mechanism 4; and the monitoring component is located inside the monitoring frame 6.

[0031] The monitoring components include: mounting slots 601 and inclined frames 605. Two sets of mounting slots 601 are provided, and the two sets of mounting slots 601 are opened on both sides inside the monitoring frame 6. Two sets of inclined frames 605 are provided, and the two sets of inclined frames 605 are slidably connected inside the two sets of mounting slots 601 respectively.

[0032] The monitoring components also include: an infrared generator 602, an infrared receiver 603, and a ramp 604. The infrared generator 602 is slidably connected to the inside of a set of ramp frames 605 and vertically slidably connected to the inside of a set of mounting slots 601. The infrared receiver 603 is slidably connected to the inside of another set of ramp frames 605 and vertically slidably connected to the inside of another set of mounting slots 601. Two sets of ramp 604 are provided, with the two sets of ramp 604 respectively opened on the infrared generator 602 and the infrared receiver 603.

[0033] The monitoring components also include: electromagnets 609 and transmission plates 608. Two sets of electromagnets 609 are provided, and the two sets of electromagnets 609 are fixedly installed inside the monitoring frame 6; the transmission plate 608 is slidably connected inside the monitoring frame 6.

[0034] The monitoring components also include: transmission rods 6081 and return springs 6082. Two sets of transmission rods 6081 are provided, and the two sets of transmission rods 6081 are slidably connected to both sides inside the monitoring frame 6. The two sets of transmission rods 6081 are fixedly installed on the left and right sides of the transmission plate 608. Two sets of return springs 6082 are provided. One end of the two sets of return springs 6082 is fixedly installed on one side of the two sets of inclined frames 605, and the other end of the two sets of return springs 6082 is fixedly installed inside the two sets of mounting slots 601.

[0035] The specific usage and function of this embodiment are as follows:

[0036] When the extrusion mechanism 4 is energized and starts printing the extruded wire through the extrusion nozzle 5, the electromagnet 609 is simultaneously energized to generate magnetic force, attracting the transmission plate 608 to slide within the monitoring frame 6. The transmission plate 608 drives the transmission rods 6081 on both sides to move, forcing the inclined frame 605 to slide within the mounting groove 601 and compressing the return spring 6082. The inclined frame 605, in cooperation with the inclined groove 604, pushes the infrared generator 602 and the infrared receiver 603 to be pushed out of the mounting groove 601 vertically, exposing the detection surface, thus realizing real-time monitoring of wire breakage.

[0037] When the extrusion mechanism 4 stops working, the electromagnet 609 is de-energized, and the return spring 6082 releases its elastic potential energy, driving the inclined plane frame 605 to slide in the opposite direction, so that the infrared generator 602 and the infrared receiver 603 are synchronously retracted into the mounting slot 601 and hidden inside. This design can effectively avoid the problem of decreased detection accuracy caused by accidental collisions of tools or hands with the sensor during the cleaning of the printing platform 2, equipment adjustment, or replacement of consumables.

[0038] Example 2:

[0039] Based on Example 1, such as Figures 1 to 7As shown, it also includes: a protective component, which is installed inside the monitoring frame 6.

[0040] The protective components include: a protective plate 606 and a soft nylon brush 6061. Two sets of protective plates 606 are provided, and the two sets of protective plates 606 are fixedly installed on the front side of two sets of inclined frames 605. Two sets of soft nylon brushes 6061 are provided, and the two sets of soft nylon brushes 6061 are fixedly installed on the inner side of the two sets of protective plates 606.

[0041] The protective components also include: a corrugated cover 607, which is provided in two sets. The two sets of corrugated covers 607 are fixedly installed inside the two sets of mounting slots 601 and fixedly installed on one side of the two sets of inclined frames 605.

[0042] The specific usage and function of this embodiment are as follows:

[0043] The protective plate 606 provides further protection for the infrared generator 602 and infrared receiver 603 within the mounting slot 601. When the inclined frame 605 moves, causing the infrared generator 602 and infrared receiver 603 to be vertically ejected from the mounting slot 601, the protective plate 606 moves synchronously and avoids them, ensuring that the sensor detection surface is fully exposed for normal operation.

[0044] At the same time, when the protective plate 606 moves, it drives the soft nylon brush 6061 to move synchronously. The soft nylon brush 6061 can remove the floating dust and impurities on the surface of the infrared generator 602 and the infrared receiver 603 in real time, avoid signal interference caused by the accumulation of pollutants, and ensure monitoring accuracy.

[0045] In addition, the corrugated cover 607 can seal the internal space of the mounting groove 601 by sliding and extending with the inclined frame 605, further preventing external dust from entering and extending the service life of the sensor.

[0046] The following points should be noted in this article:

[0047] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0048] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0049] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A 3D printing device with automatic material breakage monitoring function, characterized in that: The 3D printing device with automatic material breakage monitoring function includes a mechanical frame (1), a printing platform (2), a drive mechanism (3), an extrusion mechanism (4), an extrusion nozzle (5), a monitoring frame (6), a monitoring component, and a protective component. The printing platform (2) is installed inside the mechanical frame (1); the drive mechanism (3) is installed inside the mechanical frame (1); the extrusion mechanism (4) is installed on the front side of the drive mechanism (3); the extrusion nozzle (5) is threadedly connected to the bottom of the extrusion mechanism (4); the monitoring frame (6) is fixedly installed at the bottom of the extrusion mechanism (4); the monitoring component is located inside the monitoring frame (6); and the protective component is located inside the monitoring frame (6).

2. The 3D printing device with automatic material breakage monitoring function as described in claim 1, characterized in that: The monitoring component includes: a mounting slot (601) and a ramp (605). The mounting slot (601) is provided in two sets, and the two sets of mounting slots (601) are opened on both sides inside the monitoring frame (6). The ramp (605) is provided in two sets, and the two sets of ramps (605) are slidably connected inside the two sets of mounting slots (601).

3. The 3D printing device with automatic material breakage monitoring function as described in claim 2, characterized in that: The monitoring component further includes: an infrared generator (602), an infrared receiver (603), and a ramp groove (604). The infrared generator (602) is slidably connected to the inside of a set of ramp frames (605), and the infrared generator (602) is vertically slidably connected to the inside of a set of mounting slots (601). The infrared receiver (603) is slidably connected to the inside of another set of ramp frames (605), and the infrared receiver (603) is vertically slidably connected to the inside of another set of mounting slots (601). Two sets of ramp grooves (604) are provided, and the two sets of ramp grooves (604) are respectively opened on the infrared generator (602) and the infrared receiver (603).

4. The 3D printing device with automatic material breakage monitoring function as described in claim 2, characterized in that: The monitoring component also includes an electromagnet (609) and a transmission plate (608). Two sets of electromagnets (609) are provided, and the two sets of electromagnets (609) are fixedly installed inside the monitoring frame (6). The transmission plate (608) is slidably connected inside the monitoring frame (6).

5. The 3D printing device with automatic material breakage monitoring function as described in claim 2, characterized in that: The monitoring component also includes: a transmission rod (6081) and a return spring (6082). The transmission rod (6081) is provided in two sets, and the two sets of transmission rods (6081) are slidably connected to both sides inside the monitoring frame (6). The two sets of transmission rods (6081) are fixedly installed on the left and right sides of the transmission plate (608). The return spring (6082) is provided in two sets. One end of the two sets of return springs (6082) is fixedly installed on one side of the two sets of inclined planes (605), and the other end of the two sets of return springs (6082) is fixedly installed inside the two sets of mounting slots (601).

6. The 3D printing device with automatic material breakage monitoring function as described in claim 1, characterized in that: The protective components include: a protective plate (606) and a soft nylon brush (6061). Two sets of the protective plates (606) are provided, and the two sets of the protective plates (606) are fixedly installed on the front side of two sets of inclined frames (605). Two sets of the soft nylon brush (6061) are provided, and the two sets of the soft nylon brush (6061) are fixedly installed on the inner side of the two sets of protective plates (606).

7. The 3D printing device with automatic material breakage monitoring function as described in claim 6, characterized in that: The protective assembly also includes: a corrugated cover (607), which is provided in two sets. The two sets of corrugated covers (607) are fixedly installed inside the two sets of mounting slots (601) and the two sets of corrugated covers (607) are fixedly installed on one side of the two sets of inclined frames (605).

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