CN112060566B - Three-dimensional printer and control method - Google Patents

Three-dimensional printer and control method Download PDF

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Publication number
CN112060566B
CN112060566B CN202010855284.8A CN202010855284A CN112060566B CN 112060566 B CN112060566 B CN 112060566B CN 202010855284 A CN202010855284 A CN 202010855284A CN 112060566 B CN112060566 B CN 112060566B
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information
voltage value
detection device
voltage
dimensional printer
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CN112060566A (en
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王小军
周承立
欧阳欣
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Shenzhen Anycubic Technology Co Ltd
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Shenzhen Anycubic Technology Co Ltd
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Priority to CN202010855284.8A priority Critical patent/CN112060566B/en
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Priority to PCT/CN2021/111739 priority patent/WO2022042292A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/209—Heads; Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/321—Feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • 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
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • 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
    • 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
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

The invention provides a three-dimensional printer and a control method. The three-dimensional printer comprises an extrusion head, a first connecting piece, a second connecting piece, a detection device, a processing device and a conveying piece, wherein one end of the first connecting piece is connected with the extrusion head, the other end of the first connecting piece is connected with the detection device, one end of the second connecting piece is connected with the detection device, the other end of the second connecting piece is connected with the conveying piece, the processing device is connected with the detection device, the detection device is used for detecting feeding force information of the three-dimensional printer and sending the feeding force information to the processing device, and the processing device is used for converting the feeding force information into voltage information and adjusting working parameter information of the three-dimensional printer based on the voltage information; wherein the operating parameter information comprises temperature information of the extrusion head and/or rotational speed information of the conveying member. The technical scheme provided by the invention solves the problems that the existing printer is easy to have printing faults and can not detect the faults in time.

Description

Three-dimensional printer and control method
Technical Field
The invention relates to the technical field of 3D printing, in particular to a three-dimensional printer and a control method.
Background
With the improvement of living standards of people, people have more and more demands on three-dimensional printing, the basic principle of three-dimensional printing is to generate a three-dimensional object by printing or paving continuous material layers, a three-dimensional rapid prototyping device or a three-dimensional printer works by converting a three-dimensional computer model of the object and generating a series of cross-sectional slices, then each slice is printed, and the three-dimensional object is printed and molded by overlapping each slice.
The printing mode that three-dimensional inkjet printer product adopted at present extrudes from the nozzle for the drive wire rod under extrusion motor's effort, adopts this kind of mode in printing process, can't foresee the emergence of trouble in advance, for example, when the nozzle takes place to block up, extrusion motor can continue to provide drive power for the drive wire rod for three-dimensional inkjet printer still continues the operation, further leads to the nozzle to block up more seriously and arouses three-dimensional inkjet printer trouble.
Disclosure of Invention
The embodiment of the invention provides a three-dimensional printer and a control method, and aims to solve the problems that the existing printer is easy to generate printing faults and cannot detect the faults in time.
In a first aspect, an embodiment of the present invention provides a three-dimensional printer, including: the device comprises an extrusion head, a first connecting piece, a second connecting piece, a detection device, a processing device and a conveying piece, wherein one end of the first connecting piece is connected with the extrusion head, the other end of the first connecting piece is connected with the detection device, one end of the second connecting piece is connected with the detection device, the other end of the second connecting piece is connected with the conveying piece, the processing device is connected with the detection device, the detection device is used for detecting feeding force information of the three-dimensional printer and sending the feeding force information to the processing device, and the processing device is used for converting the feeding force information into voltage information and adjusting working parameter information of the three-dimensional printer based on the voltage information;
wherein the operating parameter information includes temperature information of the extrusion head and/or rotational speed information of the conveying member.
Optionally, the detection device includes a first side surface, a second side surface and a bottom surface, the first side surface and the second side surface are arranged oppositely, the first side surface and the second side surface are both connected to the bottom surface, a preset distance gap is provided between the first side surface and the second side surface, the first connecting piece is connected to the first side surface, and the second connecting piece is connected to the second side surface.
Preferably, the detection device includes a first through hole and a second through hole, the first through hole is disposed on the first side surface, the second through hole is disposed on the second side surface, the first connecting member is connected to the first through hole, the second connecting member is connected to the second through hole, and the first through hole and the second through hole are disposed opposite to each other.
Optionally, the detection device includes a detection piece and an induction piece, the induction piece is located the first side and/or the second side, the detection piece with the induction piece is connected, the induction piece is used for real-time induction the three-dimensional printer pay-off dynamics information, the detection piece is used for converting the pay-off dynamics information into resistance change information.
Optionally, the extrusion head further comprises a temperature adjusting device, the temperature adjusting device is arranged on the extrusion head and connected with the processing device, and the processing device adjusts the temperature of the extrusion head through the temperature adjusting device.
In a second aspect, an embodiment of the present invention further provides a control method, applied to the three-dimensional printer in the first aspect, including:
acquiring voltage information of a detection device;
adjusting working parameter information of the three-dimensional printer based on the voltage information, wherein the working parameter information comprises temperature information of the extrusion head and/or rotating speed information of the conveying member.
Optionally, the operating parameter information includes temperature information of the extrusion head, and the adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the temperature of the extrusion head to be reduced, and acquiring the voltage information of the detection device in real time, and stopping cooling until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the temperature of the extrusion head to rise, and acquiring the voltage information of the detection device in real time, and stopping the temperature rise until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
Optionally, the operating parameter information includes rotation speed information of the conveying member, and the adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the rotating speed of the conveying member to increase, and acquiring the voltage information of the detection device in real time, and stopping acceleration until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the rotating speed of the conveying member to be reduced, and acquiring the voltage information of the detection device in real time, and stopping reducing the speed until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
Optionally, the operating parameter information includes temperature information of the extrusion head and rotational speed information of the conveying member;
the adjusting the operating parameter information of the three-dimensional printer based on the voltage information comprises:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the temperature of the extrusion head to be reduced and controlling the rotating speed of the conveying member to be increased, and acquiring the voltage information of the detection device in real time, and stopping cooling and accelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the temperature of the extrusion head to rise and controlling the rotating speed of the conveying member to reduce, and acquiring the voltage information of the detection device in real time, and stopping heating and stopping decelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
Optionally, the method further comprises:
and if the difference value between the voltage value corresponding to the voltage information and a second preset voltage value is smaller than a second threshold value, generating first alarm information, wherein the second preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a non-working state.
Optionally, the method further comprises:
and if the voltage value corresponding to the voltage information is greater than the first preset voltage value and the difference value between the first preset voltage value and the second preset voltage value is greater than or equal to a third preset threshold value, generating second alarm information.
According to the technical scheme provided by the embodiment of the invention, the detection device is arranged to detect the force information of the three-dimensional printer, the force information is sent to the processing device, the feeding force information is converted into the voltage information through the processing device, and the working parameter information of the three-dimensional printer is adjusted based on the voltage information, so that the printing failure rate of the printer in the printing process can be reduced, and the occurrence of failures can be detected in time.
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 description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a three-dimensional printer according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at the dashed box;
fig. 3 is a second schematic structural diagram of a three-dimensional printer according to an embodiment of the present invention;
FIG. 4 is a front view of a detection device provided by an embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method according to an embodiment of the present invention.
Reference numerals:
1. an extrusion head; 2. a first connecting member; 3. a second connecting member; 4. a detection device; 5. a conveying member; 6. a first side surface; 7. a second side surface; 8. a bottom surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Referring to fig. 1 to 4, an embodiment of the invention provides a three-dimensional printer, including: the three-dimensional printer comprises an extrusion head 1, a first connecting piece 2, a second connecting piece 3, a detection device 4, a processing device (not shown in the figure) and a conveying piece 5, wherein one end of the first connecting piece 2 is connected with the extrusion head 1, the other end of the first connecting piece 2 is connected with the detection device 4, one end of the second connecting piece 3 is connected with the detection device 4, the other end of the second connecting piece 3 is connected with the conveying piece 5, the processing device is connected with the detection device 4, the detection device 4 is used for acquiring feeding force information of the three-dimensional printer and sending the feeding force information to the processing device, and the processing device is used for converting the feeding force information into voltage information and adjusting working parameter information of the three-dimensional printer based on the voltage information;
wherein the operating parameter information comprises temperature information of the extrusion head 1 and/or rotational speed information of the conveying member 5.
It should be noted that there are three main operating states of the three-dimensional printer, which are respectively unprinted and the device is in a natural state; normally printing a feeding state; and an equipment exception status. In the printing process of the three-dimensional printer, whether the printer is in a normal working state or not can be detected through the feeding force of the real-time detection printer, when the feeding force of the printer changes, printing faults can be avoided through adjusting working parameters of the printer, and when the printer breaks down, the failure can be timely detected and alarm can be generated through the feeding force of the printer at the moment of the failure. In the embodiment of the application, the feeding force of the printer in the printing process is converted into the voltage information for judgment, so that the change of the feeding force can be more clearly and visually embodied.
According to the technical scheme provided by the embodiment of the invention, the detection device 4 is arranged to detect the force information of the three-dimensional printer and send the force information to the processing device, the processing device is used for converting the feeding force information into the voltage information and adjusting the working parameter information of the three-dimensional printer based on the voltage information, so that the printing failure rate of the printer in the printing process can be reduced, and the occurrence of failures can be detected in time.
In this embodiment, a teflon pipe is used as a connecting piece, an extruder is used as a conveying piece 5 for conveying consumables, a single chip microcomputer is used as a processing device, and as an alternative embodiment, in other feasible embodiments, other types of connecting pieces, conveying pieces 5 or processing devices can be used as long as they can achieve the same function, and the description is only given here, and the invention is not limited. However, any modification thereof is within the scope of the present embodiment.
Optionally, the detecting device 4 includes a first side surface 6, a second side surface 7, and a bottom surface 8, the first side surface 6 and the second side surface 7 are disposed opposite to each other, the first side surface 6 and the second side surface 7 are both connected to the bottom surface 8, a preset distance gap is provided between the first side surface 6 and the second side surface 7, the first connecting member 2 is connected to the first side surface 6, and the second connecting member 3 is connected to the second side surface 7.
In one possible embodiment, the first side surface 6 may be arranged perpendicular to the bottom surface 8, and the second side surface 7 may be arranged perpendicular to the bottom surface 8 and parallel to the first side surface 6. And are intended to be exemplary only and not limiting.
In this embodiment, in order to better obtain the feeding force of the three-dimensional printer in the printing process in real time through the deformation generated by the detection device 4, a preset distance gap is set between the first side surface 6 and the second side surface 7, wherein the range of the preset distance gap may be 0.3mm to 1mm, in this embodiment, the preset distance gap is taken as 0.5mm as an example for description, and here, as an alternative embodiment, in other possible embodiments, gaps with other distances may also be set, but no matter how the distance is changed, the distance is within the protection scope of this embodiment. Also, in this embodiment, the consumables employed are hard consumables. Therefore, the gap of the preset distance has no influence on the feeding process.
When the detection device 4 is connected to the three-dimensional printer, the connection may be made in a fixed manner as shown in fig. 3. As shown in fig. 1, the connection may also be made in a suspended manner. Wherein, when adopting the fixed mode to connect, be equipped with the fixed orifices in detection device 4's bottom surface 8, fix detection device 4 to the panel of extruder through the fixed orifices on, when adopting the mode of hanging to connect, can hang detection device 4 to the position that is relatively closer to extrusion head 1, here, the illustration is made only as an example, to detection device 4's concrete connection mode, this embodiment does not do the restriction, only need it can reach corresponding effect.
Optionally, the detecting device 4 includes a first through hole and a second through hole, the first through hole is disposed on the first side surface 6, the second through hole is disposed on the second side surface 7, the first connecting member 2 is connected to the first through hole, the second connecting member 3 is connected to the second through hole, and the first through hole and the second through hole are disposed opposite to each other.
Understandably, in this embodiment, there is not direct contact between first connecting piece 2 and the second connecting piece 3, but connect through detection device 4 to make detection device 4 of connection between first connecting piece 2 and second connecting piece 3 produce deformation in order to obtain pay-off dynamics information when the consumptive material can not normally be extruded, like this, can in time detect the condition that the consumptive material can not normally be extruded.
Optionally, the detection device 4 includes a detection piece and a sensing piece, the sensing piece is arranged on the first side surface 6 and/or the second side surface 7, the detection piece is connected with the sensing piece, the sensing piece is used for sensing feeding force information of the three-dimensional printer in real time, and the detection piece is used for converting the feeding force information into resistance change information.
Specifically, the sensing element may be provided on the first side surface 6, the sensing element may be provided on the second side surface 7, and the sensing element may be provided on the first side surface 6 and the second side surface 7, and in this embodiment, the case where the sensing element is provided on the first side surface 6 and the second side surface 7 is exemplified.
In this embodiment, the sensing element is an aluminum machined element, and the detecting element is a resistance strain gauge, such as a wheatstone bridge resistance strain gauge, it should be noted that, here, the illustration is only an example, which is not limited, and alternatively, in other possible embodiments, the sensing element or the detecting element may be set as another type of device, as long as it can achieve the same function. However, any modification thereof is within the scope of the present embodiment.
In this embodiment, the resistance strain gauge is attached to the aluminum machining part, when the consumables cannot be extruded normally but the three-dimensional printer still continues to work, the consumables located between the first side surface 6 and the second side surface 7 respectively generate acting forces on the two side surfaces, the acting forces enable the aluminum machining part to be slightly deformed, and when the aluminum machining part is deformed, the resistance strain gauge is correspondingly changed, for example, the resistance value of the resistance strain gauge is increased. Alternatively, to facilitate the calculation, the processing device first converts the resistance signal into a voltage signal for subsequent processing. Present detection device sensor is equipped with limit switch through inside, and through detecting whether limit switch is disconnection or on-state, can judge the printer disconnected material state, but can not judge the printer putty state, for example: when the consumable passes through the sensor, the limit switch is in a closed state, and the consumable is in a normal state; when the consumptive material was all used up, when no consumptive material passed through in the sensor promptly, limit switch was in the off-state, was the not enough state of consumptive material this moment. The existing detection device sensor can also judge the material breaking and blocking states of the printer in a coding or magnetic field change mode, for example: when the consumable moves, the coding disc is driven to rotate or the disc with the magnet is driven to rotate, so that a changed electric signal is generated.
Compared with the existing limit switch detection mode, the detection device has the advantages that the structure is simple, and the material blockage state can be judged; compared with the existing coding or magnetic field change mode, the method can also judge the material breaking and blocking states of the printer, and has the advantage of simple structure. Specifically, in this embodiment, detection device includes first side, second side and bottom surface, and first side and second side set up relatively, and first side and second side all are connected with the bottom surface, are equipped with between first side and the second side and predetermine apart from the clearance, and first connecting piece is connected with first side, and the second connecting piece is connected with the second side, and wherein, be equipped with first through-hole at detection device's first side, be equipped with the second through-hole at detection device's second side, first through-hole with the second through-hole sets up relatively, and like this, the detection device's of this application structural design is simple. In actual work, the feeding force information of the three-dimensional printer can be accurately detected based on the deformation of the first side surface and the second side surface. The feeding force information is used for adjusting the working parameter information of the three-dimensional printer, so that the printing failure rate of the printer in the printing process can be reduced, and the failure can be detected in time. However, the existing encoding or magnetic field variation methods, such as: need will send the silk wheel and press the adjacent setting of silk wheel, be equipped with magnet in the one end of pressing the silk wheel, hall sensor is located and uses the target location to form as the centre of a circle on the circumference, and the target location interval magnet preset distance, and its structure is more complicated relatively this application.
Alternatively, an amplifying unit can be further arranged, wherein the input end of the amplifying unit is connected with the resistance strain gauge, the output end of the amplifying unit is connected with the processing device, the resistance signal is amplified to preset multiples through the amplifying unit and then sent to the processing device, and the distortion condition in the signal transmission process can be avoided.
Optionally, the system further comprises a temperature adjusting device, the temperature adjusting device is arranged on the extrusion head 1 and connected with the processing device, and the processing device adjusts the temperature of the extrusion head 1 through the temperature adjusting device.
The temperature adjusting device connected with the processing device is arranged on the extrusion head 1, so that the temperature information of the extrusion head 1 can be adjusted, and the fault occurrence probability of the three-dimensional printer can be reduced.
Referring to fig. 5, an embodiment of the present application further provides a control method applied to the three-dimensional printer, including:
step 501, acquiring voltage information of a detection device;
in the embodiment, the feeding force of the consumable materials in the printing process is fed back through the voltage information. For example, when the consumable material cannot be extruded normally, the aluminum machining part deforms, and when the aluminum machining part deforms, the resistance strain gauge correspondingly changes, for example, the resistance value of the resistance strain gauge increases. The resistance signal is further converted to a voltage signal and subsequent adjustments are made by the processing device based on the voltage signal.
And 502, adjusting working parameter information of the three-dimensional printer based on the voltage information, wherein the working parameter information comprises temperature information of the extrusion head and/or rotating speed information of the conveying member.
In the embodiment, the feeding force and the working temperature of the printer can be adjusted by adjusting the temperature information of the extrusion head and/or the rotating speed information of the conveying part, so that the safety of the three-dimensional printing process is ensured, and the failure occurrence probability of the three-dimensional printing is reduced.
It should be noted that there are three main operating states of the three-dimensional printer, which are respectively unprinted and the device is in a natural state; normally printing a feeding state; and an equipment exception status. In the printing process of the three-dimensional printer, whether the printer is in a normal working state or not can be detected by detecting the feeding force of the printer in real time. In this embodiment, the force applied by the detection device is denoted as F0, and the voltage corresponding to F0 is denoted as V0; recording the stress detected by the detection device as F1 and the voltage corresponding to F1 as V1 when the equipment is in a normal printing and feeding state; the force detected by the detection device in the real-time printing process of the device is recorded as F2, and the voltage corresponding to the F2 is recorded as V2.
Optionally, the operating parameter information includes temperature information of the extrusion head, and adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the temperature of the extrusion head to be reduced, acquiring the voltage information of the detection device in real time, and stopping cooling until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the temperature of the extrusion head to rise, and acquiring the voltage information of the detection device in real time, and stopping heating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state. In this embodiment, the voltage of the device in the normal printing and feeding state is used as a preset voltage value, and the voltage value is in direct proportion to the stress.
When the absolute value of V2 < | V1|, namely F2< F1, the feeding force is small at the moment, if the feeding force is not adjusted in time, a printing fault may occur, at the moment, the temperature of the extrusion head is reduced, the real-time deformation of the aluminum machining part in the process of reducing the temperature of the extrusion head is detected in real time, a corresponding voltage value is generated according to the real-time deformation, and the difference between the corresponding voltage value and the first preset voltage value is smaller than a first threshold value. When | V2| > | V1|, namely F2> F1, the feeding force is larger at the moment, if the feeding force is not adjusted in time, a printing fault may occur, at the moment, the temperature of the extrusion head is increased, the real-time deformation of the aluminum machining part in the process of increasing the temperature of the extrusion head is detected in real time, and a corresponding voltage value is generated according to the real-time deformation until the difference value between the corresponding voltage value and the first preset voltage value is smaller than a first threshold value. The difference value between the voltage value corresponding to the voltage information in the real-time deformation process and the first preset voltage value is smaller than the first threshold value, that is, the real-time voltage V2 is approximately equal to the voltage value V1 in the normal printing and feeding state, and the real-time voltage V3578 satisfies the formula of | V2| ≈ V1|, namely, when F2 ≈ F1, the three-dimensional printer normally works.
As a convertible embodiment, the operating parameter information includes rotational speed information of the conveying member, and adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the rotating speed of the conveying member to increase, and acquiring the voltage information of the detection device in real time, and stopping acceleration until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the rotating speed of the conveying member to be reduced, and acquiring the voltage information of the detection device in real time, and stopping decelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
The principle of adjusting the rotation speed of the conveying member is consistent with the principle of adjusting the temperature, and is not described herein again.
Optionally, the operating parameter information includes temperature information of the extrusion head and rotational speed information of the conveying member;
adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the temperature of the extrusion head to be reduced and controlling the rotating speed of the conveying member to be increased, and acquiring the voltage information of the detection device in real time, and stopping cooling and accelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is greater than a first preset voltage value, controlling the temperature of the extrusion head to rise and controlling the rotating speed of the conveying member to reduce, and acquiring the voltage information of the detection device in real time, and stopping heating and stopping decelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
The principle of adjusting the rotation speed and the temperature of the conveying member is the same as the principle of adjusting the temperature independently, and the detailed description is omitted here.
Optionally, the method further comprises:
if the difference value between the voltage value corresponding to the voltage information and a second preset voltage value is smaller than a second threshold value, generating first alarm information, wherein the second preset voltage value is a voltage value generated by a detection device when the three-dimensional printer is in a non-working state;
it should be noted that, when the difference between the voltage value corresponding to the voltage information in the real-time deformation process and the second preset voltage value is smaller than the second threshold, the real-time voltage V2 is approximately equal to the voltage value V0 generated by the detection device when the three-dimensional printer is in the non-operating state, and the real-time voltage V3578 satisfies the formula of | V0| ≈ V2|, that is, F0 ≈ F2, at this time, the first warning information is generated to indicate that the extrusion wheel slips or the material planing situation occurs. In this embodiment, the first warning message may be a flashing light prompt or a sound prompt.
If the voltage value corresponding to the voltage information is larger than the first preset voltage value and the difference value between the first preset voltage value and the second preset voltage value is larger than or equal to a third preset threshold value, generating second alarm information; the first alarm information and the second alarm information are respectively reminding information under different fault states.
That is, when | V1| < | V2|, that is, when F1 < < F2, the second warning information is generated to indicate that a plug has occurred, and in this embodiment, the second warning information may be a flashing light presentation or a sound presentation. But the second alarm information is required to be inconsistent with the first alarm information, so that the user can quickly distinguish the fault types.
Since the technical solution of this embodiment includes all technical solutions of the above embodiments, at least all technical effects of the above embodiments can be achieved, and details are not repeated here.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A three-dimensional printer, comprising: the device comprises an extrusion head, a first connecting piece, a second connecting piece, a detection device, a processing device and a conveying piece, wherein one end of the first connecting piece is connected with the extrusion head, the other end of the first connecting piece is connected with the detection device, one end of the second connecting piece is connected with the detection device, the other end of the second connecting piece is connected with the conveying piece, the processing device is connected with the detection device, the detection device is used for detecting feeding force information of the three-dimensional printer and sending the feeding force information to the processing device, and the processing device is used for converting the feeding force information into voltage information and adjusting working parameter information of the three-dimensional printer based on the voltage information;
wherein the working parameter information comprises temperature information of the extrusion head and/or rotation speed information of the conveying member;
the detection device comprises a first side surface, a second side surface and a bottom surface, wherein the first side surface and the second side surface are arranged oppositely, the first side surface and the second side surface are both connected with the bottom surface, a preset distance gap is arranged between the first side surface and the second side surface, the first connecting piece is connected with the first side surface, and the second connecting piece is connected with the second side surface; the detection device comprises a first through hole and a second through hole, the first through hole is arranged on the first side surface, the second through hole is arranged on the second side surface, the first connecting piece is connected with the first through hole, the second connecting piece is connected with the second through hole, and the first through hole and the second through hole are oppositely arranged;
the detection device comprises a detection piece and an induction piece, the induction piece is arranged on the first side face and/or the second side face, the detection piece is connected with the induction piece, the induction piece is used for inducing the feeding force information of the three-dimensional printer in real time, and the detection piece is used for converting the feeding force information into resistance change information.
2. The three-dimensional printer according to claim 1, further comprising a temperature regulating device disposed on said extrusion head and connected to said processing device, said processing device regulating the temperature of said extrusion head through said temperature regulating device.
3. A control method applied to the three-dimensional printer according to any one of claims 1 to 2, comprising:
acquiring voltage information of a detection device;
adjusting working parameter information of the three-dimensional printer based on the voltage information, wherein the working parameter information comprises temperature information of the extrusion head and/or rotating speed information of the conveying member.
4. The method of claim 3, wherein the operating parameter information includes temperature information of the extrusion head, and wherein adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the temperature of the extrusion head to be reduced, and acquiring the voltage information of the detection device in real time, and stopping cooling until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the temperature of the extrusion head to rise, and acquiring the voltage information of the detection device in real time, and stopping the temperature rise until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
5. The control method of claim 3, wherein the operating parameter information includes rotational speed information of the transport member, and wherein adjusting the operating parameter information of the three-dimensional printer based on the voltage information includes:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the rotating speed of the conveying member to increase, and acquiring the voltage information of the detection device in real time, and stopping acceleration until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the rotating speed of the conveying member to be reduced, and acquiring the voltage information of the detection device in real time, and stopping reducing the speed until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
6. The control method of claim 3, wherein the operating parameter information includes temperature information of the extrusion head and rotational speed information of the conveyor;
the adjusting the operating parameter information of the three-dimensional printer based on the voltage information comprises:
if the voltage value corresponding to the voltage information is smaller than a first preset voltage value, controlling the temperature of the extrusion head to be reduced and controlling the rotating speed of the conveying member to be increased, and acquiring the voltage information of the detection device in real time, and stopping cooling and accelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state;
and if the voltage value corresponding to the voltage information is larger than a first preset voltage value, controlling the temperature of the extrusion head to rise and controlling the rotating speed of the conveying member to reduce, and acquiring the voltage information of the detection device in real time, and stopping heating and stopping decelerating until the difference value between the voltage value corresponding to the voltage information and the first preset voltage value is smaller than a first threshold value, wherein the first preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a normal working state.
7. The control method according to claim 3, characterized by further comprising:
and if the difference value between the voltage value corresponding to the voltage information and a second preset voltage value is smaller than a second threshold value, generating first alarm information, wherein the second preset voltage value is the voltage value generated by the detection device when the three-dimensional printer is in a non-working state.
8. The control method according to claim 4, 5 or 6, characterized by further comprising:
and if the voltage value corresponding to the voltage information is greater than the first preset voltage value and the difference value between the first preset voltage value and the second preset voltage value is greater than or equal to a third preset threshold value, generating second alarm information.
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