CN106626361B - 3D printer consumable state detection device and method - Google Patents
3D printer consumable state detection device and method Download PDFInfo
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- CN106626361B CN106626361B CN201710001508.7A CN201710001508A CN106626361B CN 106626361 B CN106626361 B CN 106626361B CN 201710001508 A CN201710001508 A CN 201710001508A CN 106626361 B CN106626361 B CN 106626361B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
Abstract
The invention relates to the technical field of 3D printers, in particular to a consumable state detection device and method for a 3D printer. 3D printer consumptive material state detection device includes: the device comprises a current detection module and an operation module prestored with a preset current range. The current detection module is used for measuring the working current of the extrusion motor and sending the working current to the operation module. The operation module is used for receiving the working current, judging whether the working current exceeds the preset current range, and if the working current exceeds the preset current range, generating and sending an alarm signal. The device and the method for detecting the consumable state of the 3D printer realize consumable state detection, timely find problems of material breakage, material shortage, end caps, material blockage and the like and give an alarm, improve printing precision and printing success rate, save user time, avoid loss of users and prolong the service life of the 3D printer.
Description
Technical Field
The invention relates to the technical field of 3D printers, in particular to a consumable state detection device and method for a 3D printer.
Background
With the continuous progress of 3D printing technology, people put forward higher requirements on the function, performance and reliability of 3D printers. The 3D printer is used as a new processing device and has wider and wider application prospect and market potential. Currently, most of the 3D printers on the market are based on Fused Deposition Modeling (FDM). The material of FDM is typically a Thermoplastic material such as wax, Acrylonitrile Butadiene Styrene (ABS), polylactic acid (PLA), Thermoplastic polyurethane elastomer rubbers (TPU), nylon (Polyamide, PA). The material is heated and melted in the extruder nozzle. The extruder nozzle moves along the cross-sectional profile and filling trajectory of the part while extruding molten material which rapidly solidifies and coagulates with the surrounding material. Wherein, the material used for 3D printing is also called consumable material.
The problems of material breakage, material shortage, plugs, material blockage and the like easily occur in the operation process of the 3D printer. If these problems cannot be found in time, uneven printing, low printing precision, unqualified printed products, printing pause, unsuccessful printing and the like may be caused, which wastes user time and brings loss to users. In addition, the service life of the 3D printer is also influenced by the plug and the clamping material.
Disclosure of Invention
In view of the above, the present invention provides a device and a method for detecting consumable status of a 3D printer to solve the above problem.
In order to achieve the purpose, the invention provides the following technical scheme:
A3D printer consumable state detection device includes: the device comprises a current detection module and an operation module pre-stored with a preset current range;
the current detection module is used for measuring the working current of the extrusion motor and sending the working current to the operation module;
the operation module is used for receiving the working current, judging whether the working current exceeds the preset current range, and if the working current exceeds the preset current range, generating and sending an alarm signal.
Further, the current detection module is further configured to measure a no-load current and an overload current of the extrusion motor, and send the no-load current and the overload current to the operation module;
the operation module is further configured to adjust the preset current range according to the no-load current and the overload current, so that the preset current in the preset current range is greater than the no-load current and less than the overload current.
Furthermore, the 3D printer consumable state detection device further comprises an extruder temperature detection module, wherein the extruder temperature detection module is used for acquiring the temperature of the nozzle of the extruder and sending the temperature of the nozzle of the extruder to the operation module;
and the operation module is also used for adjusting the preset current range according to the temperature of the nozzle of the extruder.
Furthermore, the 3D printer consumable state detection device further comprises a rotating speed detection module, wherein the rotating speed detection module is used for acquiring the extrusion speed and sending the extrusion speed to the operation module;
the operation module is further used for adjusting the preset current range according to the extrusion speed.
Furthermore, the 3D printer consumable state detection device further comprises an ambient temperature detection module, wherein the ambient temperature detection module is used for acquiring ambient temperature and sending the ambient temperature to the operation module;
the operation module is further used for adjusting the preset current range according to the environment temperature.
The utility model provides a 3D printer consumptive material state detection method, is applied to 3D printer consumptive material state detection device, 3D printer consumptive material state detection device includes current detection module and the calculation module that has preset current range in advance, the method includes:
the current detection module measures the working current of the extrusion motor and sends the working current to the operation module;
the operation module receives the working current, judges whether the working current exceeds the preset current range, and generates and sends an alarm signal if the working current exceeds the preset current range.
Further, the method further comprises: the current detection module measures the no-load current and the overload current of the extrusion motor and sends the no-load current and the overload current to the operation module;
and the operation module adjusts the preset current range according to the no-load current and the overload current, so that the preset current in the preset current range is larger than the no-load current and smaller than the overload current.
Further, the 3D printer consumable state detection device further comprises an extruder temperature detection module, and the method further comprises the following steps:
the extruder temperature detection module acquires the temperature of the extruder nozzle and sends the temperature of the extruder nozzle to the operation module;
and the operation module adjusts the preset current range according to the temperature of the nozzle of the extruder.
Further, the 3D printer consumable state detection device further comprises a rotating speed detection module, and the method further comprises the following steps:
the rotating speed detection module acquires the extrusion speed and sends the extrusion speed to the operation module;
and the operation module adjusts the preset current range according to the extrusion speed.
Further, the 3D printer consumable state detection device further comprises an ambient temperature detection module, and the method further comprises:
the environment temperature detection module acquires environment temperature and sends the environment temperature to the operation module;
and the operation module adjusts the preset current range according to the environment temperature.
According to the consumable state detection device for the 3D printer, provided by the invention, the working current of the extrusion motor is measured, whether the working current exceeds the preset current range is judged, if the working current exceeds the preset current range, the problems of material breakage, material shortage, end cap, material blockage and the like of the 3D printer are judged, and an alarm signal is generated and sent, so that consumable state detection is realized, the problems of material breakage, material shortage, end cap, material blockage and the like are found in time and an alarm is given, the printing precision and the printing success rate are improved, the time of a user is saved, the loss of the user is avoided, and the service life of the 3D printer is prolonged.
The 3D printer consumable state detection method provided by the invention is applied to the 3D printer consumable state detection device, and therefore, the 3D printer consumable state detection device has similar beneficial effects.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only some embodiments of the invention and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
Fig. 1 is a schematic structural diagram of a consumable state detection device of a 3D printer according to an embodiment of the present invention.
FIG. 2 is a flowchart of a method for detecting the consumable status of a 3D printer according to an embodiment of the present invention.
FIG. 3 is a flowchart of another method for detecting the status of a consumable of a 3D printer according to an embodiment of the present invention.
FIG. 4 is a flowchart of another method for detecting the status of a consumable of a 3D printer according to an embodiment of the present invention.
Icon: 1-3D printer consumable state detection device; 10-a current detection module; 20-an operation module; 30-extruder temperature detection module; 40-a rotation speed detection module; 50-ambient temperature detection module.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. In the description of the present invention, the terms "first," "second," "third," "fourth," and the like are used merely to distinguish one description from another, and are not to be construed as merely or implying relative importance.
Referring to fig. 1, an embodiment of the invention provides a device 1 for detecting consumable status of a 3D printer, including: a current detection module 10 and an operation module 20 pre-stored with a preset current range.
And the current detection module 10 is used for measuring the working current of the extrusion motor and sending the working current to the operation module 20. The method for measuring the working current of the extrusion motor may be a direct current sampling method, a hall current sampling method, a high-end current sampling method, a low-end current sampling method, a differential current sampling method, a single-end current sampling method, and other methods known to those skilled in the art, and is not limited thereto. The current detection module 10 is a component for measuring the working current of the extrusion motor by adopting the method.
And the operation module 20 is configured to receive the working current, determine whether the working current exceeds the preset current range, and generate and send an alarm signal if the working current exceeds the preset current range. The operation module 20 may be implemented in hardware, software, or a combination thereof.
The extrusion motor of the 3D printer has three working states: no load, normal, overload. When the extruder is in a material breaking state or a material shortage state, the extruding motor is in an idle load state. When the extruder is blocked and jammed, the extruding motor is in an overload state. Recording the no-load power of the extrusion motor as PminAnd the power during normal operation is recorded as PtypeAnd the overload power is noted as PmaxThen P ismin<Ptype<Pmax. The extruder is the main machine for melting and extruding the material, and the extruder motor is a part of the extruder and is a machine for providing power for the extruder. In the 3D printer, the power supply voltage is approximately unchanged in a period of time, and the power of the extrusion motor is only related to the working current of the extrusion motor. Marking the no-load current of the extrusion motor as IminThe current during normal operation is denoted as ItypeAnd the overload current is denoted as ImaxThen, Imin<Itype<Imax. Therefore, the working state of the extruding motor can be judged by measuring the working current of the extruding motor, and then whether the problems of material breaking, material shortage, end cap, material blockage and the like occur in the extruding machine is judged. The predetermined current range is multiple ItypeIn a predetermined current range, a predetermined current in the predetermined current range is IminTo ImaxAnd does not include IminAnd Imax. When the consumable materials are not installed, the working current of the extrusion motor is measured, namely the no-load current I of the extrusion motormin. When the consumable is measured and then extruded without heating,the working current of the extrusion motor is the overload current I of the extrusion motormax。
The working current of the extrusion motor is mainly related to the efficiency, the extrusion speed and the consumable coefficient of the extrusion motor, the consumable coefficient is related to the type of the consumable, different consumables and printing temperatures may be different, for example, the PLA material recommends a printing temperature of 195 ℃, the TPU material recommends a printing temperature of 210 ℃ to 220 ℃, the ABS material recommends a printing temperature of 220 ℃ to 240 ℃, the printing temperature refers to the temperature of the nozzle of the extruder required for printing the consumable, therefore, different printing temperatures and output powers of the extrusion motor are different, the higher the printing temperature is, the higher the working current of the extrusion motor is, the larger the preset current within the preset current range of the extrusion motor should be, the larger the working current of the extrusion motor should be, the larger the preset current within the preset current range of the extrusion motor should be, the larger the preset current should be, the efficiency of the extrusion motor should be, the environmental temperature is related to the environmental temperature, the higher the environmental temperature is, the same material is printed, the larger the working current of the extrusion motor is, the larger the preset current within the preset current range of the extrusion motor should be, the preset current range of the extrusion motor should be larger the environmental temperature, the environmental temperature coefficient of the extrusion motor is related to the environmental temperature, the environmental temperature of the consumable 36 is, the environmental temperature is, the coefficient of the environmental velocity of the consumable, the constant of the consumable coefficient of the consumable, the extrusion motor, the constant of the extrusion motor, the extrusion speed of the extrusion motor.
Fix η, v and k, measure I respectivelyminAnd ImaxDetermining a preset current range, wherein the preset current in the preset current range is IminTo ImaxAnd does not include IminAnd Imax. For example, at a room temperature of 25 ℃, the consumable is TPU, the printing temperature is 215 ℃, the extrusion speed is 60mm/s, and I is respectively measuredminAnd ImaxAnd determining a preset current range. The method for determining the preset currentThe method is called immobilization.
After the preset current range is determined by adopting a fixing method, when a 3D printer is used for printing various materials, whether the working current of the extrusion motor exceeds the preset current range or not can be judged. And when the working current of the extrusion motor is less than or equal to the no-load current, judging that the extrusion motor is in no-load, and giving an alarm when the extruder is in material failure and material shortage. And when the working current of the extrusion motor is more than or equal to the overload current, judging that the extrusion motor is overloaded, and the extruder blocks and blocks materials, and giving an alarm. The alarm mode may be, but is not limited to, a mode known to those skilled in the art, such as sounding an alarm, displaying an LED, and sending a message to a mobile phone of a user, and is not limited herein. The no-load alarm and the overload alarm can be in the same or different modes.
It should be understood that the preset current range can be set not only by a fixed method, but also flexibly according to the above principle when used at a later stage to improve the accuracy, for example, by the following methods or a combination of the following methods.
Optionally, in this embodiment, the current detection module 10 is further configured to measure a no-load current and an overload current of the extrusion motor, and send the no-load current and the overload current to the operation module 20. The operation module 20 is further configured to adjust the preset current range according to the no-load current and the overload current, so that the preset current in the preset current range is greater than the no-load current and less than the overload current. Compared with the fixing method, the method is characterized in that after a certain consumable material is specifically printed and printing parameters are set, the no-load current and the overload current of the extrusion motor are respectively measured, the preset current range is determined, the method is more accurate than the method adopting a universal preset current range in the fixing method, and the alarm accuracy is improved.
Optionally, in this embodiment, the 3D printer consumable state detecting device 1 further includes an extruder temperature detecting module 30, and the extruder temperature detecting module 30 is configured to obtain the temperature of the extruder nozzle, and send the temperature of the extruder nozzle to the operation module 20. And the operation module 20 is further configured to adjust the preset current range according to the temperature of the extruder nozzle. Different consumptive materials, printing temperature probably is different, consequently, can confirm consumptive material coefficient k through the temperature of survey extruder nozzle, according to consumptive material coefficient k to the influence of predetermineeing the electric current scope, adjusts the predetermined electric current scope, improves the rate of accuracy of reporting to the police. The extruder temperature detecting module 30 may be a temperature sensor, a thermometer, or the like that measures temperature.
Optionally, in this embodiment, the 3D printer consumable state detecting device 1 further includes a rotation speed detecting module 40, and the rotation speed detecting module 40 is configured to obtain the extrusion speed v and send the extrusion speed v to the operation module 20. And the operation module 20 is further configured to adjust the preset current range according to the extrusion speed v, so as to improve the accuracy of alarm. The adjustment is to adjust the preset current range according to the influence of the extrusion speed v on the preset current range. The method for measuring the extrusion speed v may be various, and is not limited herein. For example, the extrusion speed v may be determined from the extrusion motor speed, which is determined by the controller controlling the motor rotation, and thus the motor speed, and thus the extrusion speed v, may be obtained directly from the controller. The extrusion speed v can also be determined by the form of the working current of the extrusion motor measured by the current detection module 10, when the extrusion motor is reversed, an obvious bulge appears on the working current diagram of the extrusion motor, and the extrusion speed v can be obtained by adopting a certain algorithm. The extrusion speed v may also be obtained by a speed sensor or the like. The speed detection module 40 may be implemented in hardware, software, or a combination thereof.
Optionally, in this embodiment, the 3D printer consumable state detecting apparatus 1 further includes an ambient temperature detecting module 50, the ambient temperature detecting module 50 is configured to obtain an ambient temperature η, and send the ambient temperature η to the computing module 20, the computing module 20 is further configured to adjust the preset current range according to the ambient temperature η, so as to improve the accuracy of the alarm, the adjustment is performed according to the influence of the ambient temperature η on the preset current range, and the ambient temperature detecting module 50 may be a temperature sensor, a thermometer, or other device for measuring temperature.
Referring to fig. 2, an embodiment of the present invention further provides a method for detecting a consumable state of a 3D printer, which is applied to a consumable state detecting apparatus 1 of the 3D printer, where the consumable state detecting apparatus 1 of the 3D printer includes a current detecting module 10 and an operation module 20 pre-storing a preset current range, and the method includes: step S101 and step S102.
In step S101, the current detection module 10 measures the working current of the extrusion motor, and sends the working current to the operation module 20.
Step S102, the operation module 20 receives the working current, determines whether the working current exceeds the preset current range, and generates and transmits an alarm signal if the working current exceeds the preset current range.
Referring to fig. 3, optionally, in this embodiment, before step S101 and step S102, the method further includes: step S103 and step S104.
In step S103, the current detection module 10 measures the no-load current and the overload current of the extrusion motor, and sends the no-load current and the overload current to the operation module 20.
In step S104, the operation module 20 adjusts the preset current range according to the no-load current and the overload current, so that the preset current in the preset current range is greater than the no-load current and less than the overload current.
Referring to fig. 4, optionally, in this embodiment, the 3D printer consumable state detecting apparatus 1 further includes an extruder temperature detecting module 30, and the method further includes: step S105 and step S106.
Step S105, the extruder temperature detection module 30 obtains the temperature of the extruder nozzle, and sends the temperature of the extruder nozzle to the operation module 20.
Step S106, the operation module 20 adjusts the preset current range according to the temperature of the extruder nozzle.
Optionally, in this embodiment, the 3D printer consumable state detecting apparatus 1 further includes a rotation speed detecting module 40, and the method further includes: step S107 and step S108.
Step S107, the rotation speed detection module 40 acquires the extrusion speed and sends the extrusion speed to the operation module 20.
In step S108, the operation module 20 adjusts the preset current range according to the extrusion speed.
Optionally, in this embodiment, the 3D printer consumable state detecting apparatus 1 further includes an ambient temperature detecting module 50, and the method further includes: step S109 and step S110.
In step S109, the ambient temperature detection module 50 obtains the ambient temperature, and sends the ambient temperature to the operation module 20.
In step S110, the operation module 20 adjusts the preset current range according to the ambient temperature.
It should be understood that, in the process of implementing the method once, the number of times and the execution sequence of the steps S101, S102, S103, S104, S105, S106, S107, S108, S109 and S110 are not limited, and should be flexibly selected according to the actual situation.
According to the consumable state detection device 1 for the 3D printer, provided by the invention, the working current of the extrusion motor is measured, whether the working current exceeds the preset current range is judged, if the working current exceeds the preset current range, the problems of material breakage, material shortage, end cap, material blockage and the like of the 3D printer are judged, and an alarm signal is generated and sent, so that consumable state detection is realized, the problems of material breakage, material shortage, end cap, material blockage and the like are found in time and an alarm is given, the printing precision and the printing success rate are improved, the user time is saved, the loss of a user is avoided, the service life of the 3D printer is prolonged, the preset current range is a function of η, v and k, and the device can be adjusted according to the influence of η, v and k on the preset current range, and the alarm accuracy is improved.
The 3D printer consumable state detection method provided by the invention is applied to the 3D printer consumable state detection device 1, and therefore, the method has similar beneficial effects.
In the description of the present invention, it should be noted that the terms "disposed," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be further noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, which are merely for convenience of description and simplification of description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a 3D printer consumptive material state detection device which characterized in that includes: the device comprises a current detection module, an operation module with a preset current range, an extruder temperature detection module, a rotating speed detection module and an environment temperature detection module, wherein the operation module is pre-stored with the preset current range;
the current detection module is used for measuring the working current of the extrusion motor and sending the working current to the operation module;
the operation module is used for receiving the working current, judging whether the working current exceeds the preset current range or not, and generating and sending an alarm signal if the working current exceeds the preset current range;
the extruder temperature detection module is used for acquiring the temperature of the extruder nozzle and sending the temperature of the extruder nozzle to the operation module; the rotating speed detection module is used for acquiring the extrusion speed and sending the extrusion speed to the operation module;
the environment temperature detection module is used for acquiring environment temperature and sending the environment temperature to the operation module;
the operation module is further used for adjusting the preset current range according to the temperature of the nozzle of the extruder, adjusting the preset current range according to the extrusion speed, and adjusting the preset current range according to the environment temperature.
2. The 3D printer consumable state detection device according to claim 1, wherein the current detection module is further configured to measure idle current and overload current of the extrusion motor, and send the idle current and the overload current to the operation module;
the operation module is further configured to adjust the preset current range according to the no-load current and the overload current, so that the preset current in the preset current range is greater than the no-load current and less than the overload current.
3. The utility model provides a 3D printer consumptive material state detection method, its characterized in that is applied to 3D printer consumptive material state detection device, 3D printer consumptive material state detection device includes current detection module, has operation module, extruder temperature detection module, rotational speed detection module and the ambient temperature detection module of presetting the electric current scope in advance, the method includes:
the current detection module measures the working current of the extrusion motor and sends the working current to the operation module;
the operation module receives the working current, judges whether the working current exceeds the preset current range, and generates and sends an alarm signal if the working current exceeds the preset current range;
the extruder temperature detection module acquires the temperature of the extruder nozzle and sends the temperature of the extruder nozzle to the operation module;
the rotating speed detection module acquires the extrusion speed and sends the extrusion speed to the operation module;
the environment temperature detection module acquires environment temperature and sends the environment temperature to the operation module;
and the operation module adjusts the preset current range according to the temperature of the nozzle of the extruder, the extrusion speed and the environment temperature.
4. The 3D printer consumable status detection method according to claim 3, characterized in that the method further comprises:
the current detection module measures the no-load current and the overload current of the extrusion motor and sends the no-load current and the overload current to the operation module;
and the operation module adjusts the preset current range according to the no-load current and the overload current, so that the preset current in the preset current range is larger than the no-load current and smaller than the overload current.
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| US9321609B2 (en) * | 2012-12-07 | 2016-04-26 | Stratasys, Inc. | Filament drive mechanism for use in additive manufacturing system |
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| US9321609B2 (en) * | 2012-12-07 | 2016-04-26 | Stratasys, Inc. | Filament drive mechanism for use in additive manufacturing system |
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