CN220508848U - 3D printing material moisture content measuring device and 3D printer - Google Patents
3D printing material moisture content measuring device and 3D printer Download PDFInfo
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- CN220508848U CN220508848U CN202223180816.6U CN202223180816U CN220508848U CN 220508848 U CN220508848 U CN 220508848U CN 202223180816 U CN202223180816 U CN 202223180816U CN 220508848 U CN220508848 U CN 220508848U
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- 239000000463 material Substances 0.000 title claims abstract description 87
- 238000010146 3D printing Methods 0.000 title claims abstract description 82
- 238000005259 measurement Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004364 calculation method Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007639 printing Methods 0.000 description 16
- 238000005491 wire drawing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application discloses 3D printing material moisture content measuring device and 3D printer includes: the device comprises a base, and a first electrode, a second electrode, a third electrode and a fourth electrode which are arranged on the base and are distributed in sequence along the length direction of the base; the first electrode and the second electrode are arranged on the base in a staggered mode, and a first measuring gap for passing through a 3D printing material is formed between the first electrode and the second electrode; the third electrode and the fourth electrode are arranged on the base in a staggered mode, a second measuring gap used for enabling the 3D printing material to pass through is arranged between the third electrode and the fourth electrode, and the 3D printing material passes through the first measuring gap and the second measuring gap at the same time during measurement. The method and the device realize quick and accurate measurement of the water content of the 3D printing material, ensure the technical effect of normal operation of the subsequent 3D printing work, and further solve the problems that the water content detection of the 3D printing material is difficult and the detection data precision is not high in the related technology.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a 3D printing material water content measuring device and a 3D printer.
Background
During 3D printing, the printhead needs to move continuously during the movement of the printhead from point a to point B. The print head is prone to drawing a portion of the wire between points a and B, a phenomenon known as "stringing", because the material is not fully cured. If the drawing phenomenon occurs in the interior of the model, the drawing phenomenon does not look unsightly. However, if the surface of the model is stringy, the ornamental effect is greatly affected.
At present, a part of materials are pumped back in advance mainly through a printing head of a 3D printer in engineering practice, so that the phenomenon that the exposed materials are drawn in the movement process due to incomplete solidification can be avoided. I.e. in the slicing software (software that transforms the 3D model into a print path) the "pull-back settings". Of course, it is sometimes desirable to achieve this in combination with a reduced nozzle extrusion temperature.
However, in practical application, the phenomenon of drawing wire still exists no matter how the back suction is increased and the temperature is reduced. In engineering practice, the water content of the 3D printing material is found to have a larger influence on printing and wiredrawing. When the water content of the 3D printing material reaches 3% or more, the more serious the printing wiredrawing phenomenon is. On the contrary, when the water content of the 3D printing material is lower than 3 percent (especially lower than 1 percent), the phenomenon of printing and wiredrawing basically disappears. Analysis shows that in a nozzle-sealed environment, the water in the 3D printing material is vaporized at a temperature above 200 ℃ required to melt the 3D printing material, the volume of the mixture is increased, and the volume of a melting tank is fixed.
In addition, according to engineering practice, the baked 3D printing material (the water content is close to 0%) is exposed to the environment at normal temperature and normal humidity (the temperature is 22-26 ℃ and the humidity is 40-70 RH), the water content can reach 3% or more after about 7 days (168 hours), and the appearance quality and the user experience of the 3D printing model are seriously affected. Therefore, the water content of the 3D printing material needs to be detected before printing, but the measurement is difficult and the measurement accuracy is not high because the water content of the printing material is relatively low.
For accurately acquiring the water content of the printing material, the current and the voltage of the printing material when the printing material is electrified need to be measured, then the conductivity is determined according to the current and the voltage value, and finally the water content is determined according to the conductivity. However, the measuring device in the related art cannot measure the current and voltage of the printing material well, so that it is difficult to measure the water content accurately.
Disclosure of Invention
The main aim of this application is to provide a 3D printing material moisture content measuring device to solve among the relevant technique measuring device and can not measure printing material's electric current and voltage well, thereby be difficult to accurately measure the problem of moisture content.
In order to achieve the above object, the present application provides a 3D printing material moisture content measuring device for measuring the moisture content of a 3D printing material, comprising: the device comprises a base, and a first electrode, a second electrode, a third electrode and a fourth electrode which are arranged on the base and are distributed in sequence along the length direction of the base; wherein,
the first electrode and the second electrode are arranged in a staggered manner on the base, and a first measuring gap for passing through a 3D printing material is arranged between the first electrode and the second electrode;
the third electrode and the fourth electrode are arranged on the base in a staggered mode, a second measuring gap used for enabling the 3D printing material to pass through is arranged between the third electrode and the fourth electrode, and the 3D printing material passes through the first measuring gap and the second measuring gap at the same time during measurement.
Further, a vertical pitch of the first measurement gap in the base width direction is equal to a diameter of the 3D printing material;
the vertical spacing of the second measurement gap in the base width direction is equal to the diameter of the 3D printed material.
Further, a pitch between the first electrode and the second electrode is equal to a pitch between the third electrode and the fourth electrode.
Further, a spacing between the second electrode and the third electrode is smaller than a spacing between the first electrode and the fourth electrode.
Further, a spacing between the second electrode and the third electrode is greater than a spacing between the first electrode and the second electrode.
Further, the device also comprises an electrical measurement unit, wherein the electrical measurement unit is connected with the first electrode, the second electrode, the third electrode and the fourth electrode through leads;
the electrical measurement unit is used for acquiring a current value between the first electrode and the fourth electrode and a voltage value between the second electrode and the third electrode.
Further, the device further comprises a calculation unit which is in communication connection with the electrical measurement unit, and the calculation unit is used for obtaining the conductivity of the 3D printing material according to the current value, the voltage value, the distance between the first electrode and the second electrode, the distance between the second electrode and the third electrode and the distance between the third electrode and the fourth electrode.
According to another aspect of the present application, there is provided a 3D printer including the above-described 3D printing material water content measuring device.
In the embodiment of the application, the base, the first electrode, the second electrode, the third electrode and the fourth electrode are arranged on the base; the first electrode and the second electrode are arranged in a staggered manner on the base, and a first measuring gap for the 3D printing material to pass through is arranged between the first electrode and the second electrode; the third electrode and the fourth electrode are arranged in a staggered manner on the base, a second measurement gap for the 3D printing material to pass through is formed between the third electrode and the fourth electrode, the 3D printing material passes through the first measurement gap and the second measurement gap at the same time during measurement, the electric conductivity of the 3D printing material can be determined according to the current between the first electrode and the fourth electrode and the voltage between the second electrode and the third electrode during measurement, the water content of the 3D printing material is determined based on the relation constant of the electric conductivity and the water content, and therefore the purpose of rapidly and accurately measuring the water content of the 3D printing material is achieved, the technical effect of normal operation of the subsequent 3D printing work is guaranteed, the problems that the water content detection of the 3D printing material is difficult and the detection data precision is not high in the related technology are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:
FIG. 1 is a schematic diagram of a structure according to an embodiment of the present application;
FIG. 2 is a schematic illustration of an application according to an embodiment of the present application;
the device comprises a base 1, a first electrode 2, a second electrode 3, a first measuring gap 4, a 53D printing material, a third electrode 6, a second measuring gap 7 and a fourth electrode 8.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein.
In the present application, the terms "upper", "lower", "inner", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "configured," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Because the moisture content of the 3D printing material rises after being stored for a period of time in the environment, the follow-up 3D printing can be influenced by the higher moisture content, so that the detection of the moisture content of the 3D printing material is needed before printing, but the measurement is difficult due to the fact that the moisture content of the printing material is relatively low, and the measurement accuracy is not high.
To solve the above technical problems, as shown in fig. 1 to 2, an embodiment of the present application provides a device for measuring a moisture content of a 3D printing material, where the device for measuring a moisture content of a 3D printing material 5 is configured to measure a moisture content of the 3D printing material 5, and includes: the electrode comprises a base 1, and a first electrode 2, a second electrode 3, a third electrode 6 and a fourth electrode 8 which are arranged on the base 1 and are sequentially distributed along the length direction of the base 1; wherein,
the first electrode 2 and the second electrode 3 are arranged in a staggered manner on the base 1, and a first measuring gap 4 for the 3D printing material 5 to pass through is arranged between the first electrode 2 and the second electrode 3;
the third electrode 6 and the fourth electrode 8 are arranged in a staggered manner on the base 1, and a second measuring gap 7 for the 3D printing material 5 to pass through is arranged between the third electrode 6 and the fourth electrode 8, and the 3D printing material 5 passes through the first measuring gap 4 and the second measuring gap 7 at the same time during measurement.
In the present embodiment, the water content measuring device measures the conductivity of the 3D printing material 5 using a four-probe method. The 3D printing supplies are made of PLA, ABS, PETG or other nonmetallic plastics, and after absorbing moisture in the air (i.e., the moisture content is increased), the conductivity of the materials is also increased (i.e., the conductivity is increased). The water content of the 3D printing material 5 can be determined based on the conductivity thereof. In the present embodiment, the conductivity of the 3D printing material 5 is measured by one base 1 and four electrodes. Specifically, the first electrode 2, the second electrode 3, the third electrode 6, and the fourth electrode 8 are mounted on the base 1. The four electrodes are distributed in sequence along the length direction of the base 1, wherein the first electrode 2 and the second electrode 3 are relatively close to each other, and the third electrode 6 and the fourth electrode 8 are also relatively close to each other.
The first electrode 2 and the second electrode 3 have a position difference in the longitudinal direction of the base 1, and the third electrode 6 and the fourth electrode 8 also have a position difference in the longitudinal direction of the base 1. The 3D printing material 5 in the form of a strip is passed through the first measuring gap 4 and the second measuring gap 7 during measurement, and the first electrode 2, the second electrode 3, the third electrode 6 and the fourth electrode 8 are connected with a voltage and current detection device. After the energization the current I between the first electrode 2 and the fourth electrode 8 and the voltage V between the second electrode 3 and the third electrode 6 can be measured. With the distance between the first electrode 2 and the second electrode 3 being I1, the distance between the second electrode 3 and the third electrode 6 being I2, the distance between the third electrode 6 and the fourth electrode 8 being I3, the conductivity of the 3D printing material 5 is:
the relation constant K of the water content and the conductivity of each 3D printing material 5 can be measured in advance by a laboratory. The water content W of the 3D printing material 5 is calculated according to the formula W=Ksigma, the water content of the 3D printing material 5 is judged in the mode, whether the whole roll of the 3D printing material 5 needs to be baked or not is determined, and then the drawing phenomenon of a printing model in the 3D printing process is reduced or eliminated.
According to the embodiment, the water content of the 3D printing material 5 is obtained by measuring the conductivity of the 3D printing material 5, so that the water content of the 3D printing material 5 is measured rapidly and accurately, the technical effect of normal operation of the subsequent 3D printing work is guaranteed, and the problems that the water content of the 3D printing material 5 is difficult to detect and the detection data precision is low in the related art are solved.
In order to enable the four electrodes to be attached to the surface of the 3D printing material 5, the vertical pitch of the first measurement gap in the width direction of the base 1 in this embodiment is equal to the diameter of the 3D printing material 5; the vertical pitch of the second measurement gap in the width direction of the susceptor 1 is equal to the diameter of the 3D printing material 5.
For ease of detection and calculation, the spacing between the first electrode 2 and the second electrode 3 is equal to the spacing between the third electrode 6 and the fourth electrode 8. The spacing between the second electrode 3 and the third electrode 6 is smaller than the spacing between the first electrode 2 and the fourth electrode 8. The spacing between the second electrode 3 and the third electrode 6 is larger than the spacing between the first electrode 2 and the second electrode 3.
As shown in fig. 2, the device further comprises an electrical measurement unit, wherein the electrical measurement unit is connected with the first electrode 2, the second electrode 3, the third electrode 6 and the fourth electrode 8 through leads; the electrical measuring unit is used for acquiring a current value between the first electrode 2 and the fourth electrode 8 and for acquiring a voltage value between the second electrode 3 and the third electrode 6. The electrical measurement unit may be a current voltmeter.
As shown in fig. 2, the device further comprises a calculation unit, which is in communication connection with the electrical measurement unit, and is configured to obtain the conductivity of the 3D printing material 5 according to the current value, the voltage value, the distance between the first electrode 2 and the second electrode 3, the distance between the second electrode 3 and the third electrode 6, and the distance between the third electrode 6 and the fourth electrode 8. The calculation unit may determine the conductivity of the 3D printing material 5 according to a measurement formula of the conductivity, and further may determine the moisture content of the 3D printing material 5 based on a predetermined relationship constant of the conductivity and the moisture content. The computing unit may be in communication with the 3D printer, and the 3D printer may display whether printing is possible based on the measurement results.
According to another aspect of the present application, there is provided a 3D printer including the above-described 3D printing material water content measuring device.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of the present application, are intended to be included within the scope of the present application.
Claims (7)
1. A 3D printing material moisture content measuring device for measuring the moisture content of a 3D printing material, comprising: the device comprises a base, and a first electrode, a second electrode, a third electrode and a fourth electrode which are arranged on the base and are distributed in sequence along the length direction of the base; wherein,
the first electrode and the second electrode are arranged in a staggered manner on the base, and a first measuring gap for passing through a 3D printing material is arranged between the first electrode and the second electrode;
the third electrode and the fourth electrode are arranged on the base in a staggered manner, a second measuring gap for the 3D printing material to pass through is arranged between the third electrode and the fourth electrode, and the 3D printing material passes through the first measuring gap and the second measuring gap at the same time during measurement;
the electric measuring unit is connected with the first electrode, the second electrode, the third electrode and the fourth electrode through leads;
the electrical measurement unit is used for acquiring a current value between the first electrode and the fourth electrode and a voltage value between the second electrode and the third electrode.
2. The 3D printing material water content measuring device according to claim 1, wherein: the vertical spacing of the first measurement gap in the width direction of the base is equal to the diameter of the 3D printing material;
the vertical spacing of the second measurement gap in the base width direction is equal to the diameter of the 3D printed material.
3. The 3D printing material water content measuring device according to claim 2, wherein: the spacing between the first electrode and the second electrode is equal to the spacing between the third electrode and the fourth electrode.
4. A 3D printing material moisture content measuring device according to claim 3, characterized in that: the spacing between the second electrode and the third electrode is smaller than the spacing between the first electrode and the fourth electrode.
5. The 3D printing material water content measuring device according to claim 4, wherein: the spacing between the second electrode and the third electrode is greater than the spacing between the first electrode and the second electrode.
6. The 3D printing material moisture content measuring device according to claim 5, wherein: the device further comprises a calculation unit which is in communication connection with the electrical measurement unit, and the calculation unit is used for obtaining the conductivity of the 3D printing material according to the current value, the voltage value, the distance between the first electrode and the second electrode, the distance between the second electrode and the third electrode and the distance between the third electrode and the fourth electrode.
7. A 3D printer comprising the 3D printing material water content measuring device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223180816.6U CN220508848U (en) | 2022-11-29 | 2022-11-29 | 3D printing material moisture content measuring device and 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223180816.6U CN220508848U (en) | 2022-11-29 | 2022-11-29 | 3D printing material moisture content measuring device and 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220508848U true CN220508848U (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223180816.6U Active CN220508848U (en) | 2022-11-29 | 2022-11-29 | 3D printing material moisture content measuring device and 3D printer |
Country Status (1)
| Country | Link |
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| CN (1) | CN220508848U (en) |
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- 2022-11-29 CN CN202223180816.6U patent/CN220508848U/en active Active
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