CN209888155U - Multi-material weighing equipment applied to 3D printer - Google Patents
Multi-material weighing equipment applied to 3D printer Download PDFInfo
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- CN209888155U CN209888155U CN201821984826.6U CN201821984826U CN209888155U CN 209888155 U CN209888155 U CN 209888155U CN 201821984826 U CN201821984826 U CN 201821984826U CN 209888155 U CN209888155 U CN 209888155U
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Abstract
The utility model relates to a be applied to many materials weighing-appliance of 3D printer. The multi-material weighing apparatus comprises: a support frame, a material container and a mixing tank; the material container is arranged on the supporting frame; the material container is provided with a plurality of material distribution bins, each material distribution bin is provided with a feeding port and a discharging port, a position detector is arranged at the position, close to the feeding port, of each material distribution bin, proportional valves are mounted at the positions, of the discharging ports, of the material distribution bins, and outlets of the proportional valves are communicated with the mixing tank respectively. Be applied to many materials weighing-appliance of 3D printer, make measuring accuracy improve greatly, strictly guaranteed the ratio between various materials to the accurate total weight that obtains the miscellanie material provides accurate data for the addition of various materials in the 3D printer.
Description
Technical Field
The utility model relates to a 3D prints technical field, especially relates to a be applied to many materials weighing-appliance of 3D printer.
Background
The emergence of 3D printing technology has subverted traditional production manufacturing process, and manufacturing process shifts to the material increase manufacturing by traditional subtract material manufacturing, greatly reduced manufacturing cost. As the 3D printing technology becomes mature, the advantages of application in the casting industry are prominent, and therefore the 3D printing technology is widely applied. When the 3D printing is applied to powder layer-by-layer printing, the powder and a curing agent are mixed according to a certain proportion, a layer of powder is paved on a printing platform, a binder is coated, then the whole printing surface is lowered by one layer thickness under the action of a series of mechanical devices, and the operation is circulated, so that the powder model for casting is finally printed.
In the printing process, the printed powder varieties are different, the corresponding curing agent addition ratios are different, and the ratios are key parameters influencing the printing quality. The weighing device of conventional 3D printer all has several kinds of materials in the printing apparatus, has several sets of independent storehouse and measurement transmitting instrument of weighing, and each storehouse sensor of weighing and transmitting instrument of weighing receive drift at zero point, linearity error, environmental electromagnetic interference influence different, therefore the measurement accuracy is also different, and the material is weighed the in-process often this accuracy, and that is inaccurate, causes weighing error, causes very big influence for the ratio of material to influence and print product quality.
Disclosure of Invention
Based on this, it is necessary to provide a multi-material weighing apparatus applied to a 3D printer, aiming at the problem that the mixing ratio of multiple materials is inaccurate due to the error of the weighing apparatus caused by using multiple sets of weighing apparatuses in the mixing process of multiple materials of the 3D printer in the prior art.
A multi-material weighing apparatus for use in a 3D printer, the multi-material weighing apparatus comprising: a support frame, a material container and a mixing tank; the material container is arranged on the supporting frame; the material container is provided with a plurality of material distribution bins, each material distribution bin is provided with a feeding port and a discharging port, a position detector is arranged at the position, close to the feeding port, of each material distribution bin, proportional valves are mounted at the positions, of the discharging ports, of the material distribution bins, and outlets of the proportional valves are communicated with the mixing tank respectively.
In one embodiment, the support frame comprises a support platform and a column, and the column is supported and arranged on one surface of the support platform.
In one embodiment, the multi-material weighing apparatus further comprises first load cells, each of which is respectively disposed on a surface of the support platform for weighing the material in the material container.
In one embodiment, the multi-material weighing apparatus further comprises a plurality of second weighing sensors, each of which is suspended from the back of the support platform for weighing the material in the mixing tank.
In one embodiment, the multi-material weighing apparatus further comprises a weighing cluster box electrically connected to each of the weighing sensors.
In one embodiment, the multi-material weighing apparatus further comprises a transmission display instrument electrically connected to the weighing cluster box for transmitting weight information to the weighing apparatus.
In one embodiment, the bottom end of the feeding port of each distribution bin is provided with a suction pump.
In one embodiment, the position detector outputs a lower signal and an upper signal respectively, the lower signal triggers the material suction pump to start material suction operation, and the upper signal triggers the material suction pump to stop material suction operation.
In one embodiment, the material container is of a truncated pyramid shape in cross section.
Above-mentioned be applied to many materials weighing equipment of 3D printer, through set up the material container including a plurality of minute feed bins on the support frame in many materials weighing equipment, in order to realize corresponding the holding respectively with multiple material in every minute feed bin, and confirm the interior material volume of minute feed bin according to the position detector who sets up on every minute feed bin, correspondingly open the proportional switch who installs in every minute feed bin exit, realize according to given unloading volume automatically regulated feed volume, carry out the material mixing in the blending tank after the unloading is finished at last. Therefore, errors caused by inconsistent calibration can be effectively eliminated, the measurement precision is greatly improved, the proportion among various materials is strictly ensured, the total weight of mixed materials is accurately obtained, accurate data is provided for the addition of various materials in the 3D printer, and the qualification of printed materials is ensured.
Drawings
Fig. 1 is a schematic perspective view of a multi-material weighing apparatus applied to a 3D printer according to an embodiment.
Fig. 2 is a schematic perspective view of another view angle of the multi-material weighing apparatus applied to the 3D printer shown in fig. 1.
Fig. 3 is a schematic perspective view of a multi-material weighing apparatus applied to a 3D printer according to another embodiment.
Fig. 4 is a schematic flow chart of a material weighing method according to an embodiment.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, a multi-material weighing apparatus for use in a 3D printer, the multi-material weighing apparatus comprising: a support frame, a material container and a mixing tank; the material container is arranged on the supporting frame; the material container is provided with a plurality of material distribution bins, each material distribution bin is provided with a feeding port and a discharging port, a position detector is arranged at the position, close to the feeding port, of each material distribution bin, proportional valves are mounted at the positions, of the discharging ports, of the material distribution bins, and outlets of the proportional valves are communicated with the mixing tank respectively.
Above-mentioned be applied to many materials weighing equipment of 3D printer, through set up the material container including a plurality of minute feed bins on the support frame in many materials weighing equipment, in order to realize corresponding the holding respectively with multiple material in every minute feed bin, and confirm the interior material volume of minute feed bin according to the position detector who sets up on every minute feed bin, correspondingly open the proportional switch who installs in every minute feed bin exit, realize according to given unloading volume automatically regulated feed volume, carry out the material mixing in the blending tank after the unloading is finished at last. Therefore, errors caused by inconsistent calibration can be effectively eliminated, the measurement precision is greatly improved, the proportion among various materials is strictly ensured, the total weight of mixed materials is accurately obtained, accurate data is provided for the addition of various materials in the 3D printer, and the qualification of printed materials is ensured.
The multi-material weighing apparatus applied to the 3D printer is described below with reference to specific embodiments to further understand the inventive concept of the multi-material weighing apparatus applied to the 3D printer. Referring to fig. 1, a multi-material weighing apparatus 10 for a 3D printer includes: a support frame 100, a material container 200, and a mixing tank 300; the material container 200 is mounted on the support frame 100, and the mixing tank 300 is disposed to communicate with the material container 200. The support frame 100 is a frame body mechanism for supporting and installing the material container 200 and the mixing tank 300, the material container 200 is used for respectively and independently storing various powder materials used by the 3D printer, and the mixing tank 300 is a container for mixing several powder materials. In one embodiment, the material container 200 is a truncated pyramid in cross-section. The material container 200 is not limited to the inverted truncated pyramid shape, and has a large top and a small bottom. Thus, by providing the material container 200 with such a structure, the smooth flow of the material in the material container 200 to the mixing tank 300 can be facilitated.
Referring to fig. 1 and fig. 2, the material container 200 is provided with a plurality of distribution bins 210, each distribution bin 210 has a feeding port 211 and a discharging port 212, a position detector 220 is disposed near the feeding port 211 of each distribution bin 210, a proportional valve 230 is mounted at the discharging port 212 of each distribution bin 210, and outlets of the proportional valves 230 are respectively communicated with the mixing tank 300. For example, the number of the distribution bins 210 is 2, 3, 4 or other numbers, and each of the distribution bins 210 is an independent accommodating space. The specific number of the dispensing bins 210 is determined according to the kind of printing powder required by the 3D printer. The position detector 220 is configured to detect a height of a material position in the corresponding distribution bin 210, and correspondingly start or stop sucking the material to the corresponding distribution bin 210. In one embodiment, a suction pump 240 is disposed at a bottom end of the feeding port of each of the distribution bins 210. The suction pump 240 is used for sucking materials into the distribution bin 210. In one embodiment, the position detector 220 outputs a lower signal and an upper signal, respectively, the lower signal triggers the material suction pump 240 to start the material suction operation, and the upper signal triggers the material suction pump 240 to stop the material suction operation. That is, when the material position in the distribution bin 210 is at a low position, the position detector 220 is triggered to output a low-level signal, at this time, the opening degree of the proportional valve 230 is zero, and correspondingly, the material suction pump 240 starts to suck material; when the material position in the material distribution bin 210 is fed to a high position, the position detector outputs an upper signal, and correspondingly the material suction pump 240 stops sucking the material. In this way, the position detector 220 has a function of outputting a lower signal and an upper signal, respectively, so that the material volume of the distribution bin 210 can be adjusted at any time according to the material position information in the distribution bin 210. Further, when all the suction pumps 240 are in a stopped state, that is, when the lower signal of the position detector 220 is not output, the proportional valve 230 is opened, wherein the opening degree of the proportional valve 230 is automatically adjusted according to a certain algorithm during the feeding process until the feeding process is finished, and the proportional valve 230 is automatically closed. The opening degree of the proportional valve is controlled according to a PID algorithm, so that the actual blanking amount is consistent with the set blanking amount. After the blanking is finished, the multi-material weighing device receives a mixing signal, so that the mixing is started in the mixing tank 300.
In order to stably mount the material container 200 and the mixing tank 300, in one embodiment, the support frame 100 includes a support platform 110 and a column 120, and the column 120 is supported and disposed on one surface of the support platform 110. Specifically, the material container 200 is mounted to the surface of the support platform 110, and the mixing tank 300 is mounted to the rear surface of the support platform 110. For example, the number of the columns 120 is four, and four corners of the supporting platform 110 are respectively provided with one column 120. In this way, by support-mounting the material container 200 and the mixing tank 300 to the platform 110 to which the pillar 120 is attached, stable mounting of the material container 200 and the mixing tank 300 is facilitated.
In order to accurately weigh the material in the material container, please refer to fig. 2 and fig. 3, in one embodiment, the multi-material weighing apparatus 10 further includes first weighing sensors 400, and each of the first weighing sensors 400 is disposed on the surface of the supporting platform 110 for weighing the material in the material container 200. In one embodiment, the multi-material weighing apparatus further comprises a plurality of second load cells 700, each of the second load cells 700 being suspended from the back of the support platform 110 for weighing the material in the mixing tank 300. It should be noted that the first load cell 400 and the second load cell 700 may be the same type of sensor or different sensors. In one embodiment, each of the first load cells 400 is disposed on a surface of the material container 200; in another embodiment, each of the first load cells 400 is disposed by a mounting frame. Accordingly, in one embodiment, each of the second weighing sensors 700 is respectively disposed on the surface of the mixing tank 300; in another embodiment, each of the second load cells 700 is disposed by a mounting frame. In this way, by providing a plurality of the first load cells 400 and a plurality of the second load cells 700, multi-point detection is formed, so that the weight of the material in the material container 200 and the weight of the material in the mixing tank 300 can be accurately weighed in time. In addition, during the actual use process, the first weighing sensor 400 is selectively activated to weigh the amount of the material in the material container 200 in time, so as to accurately obtain the weight of the material in the material distributing bin 210 which is activated and opened correspondingly; or the second weighing sensor 700 is selected to be started to weigh the material amount in the mixing tank 300 in time, so that the received material discharge amount of the material distribution bin 210 which is correspondingly started to be opened is accurately obtained. That is, the first weighing sensor 400 and the second weighing sensor 700 are not started to detect the material blanking amount at the same time, so that the accurate weighing of the material weight can be further improved. In order to weigh the material inside the material container and the material inside the mixing tank, in one embodiment, the multi-material weighing apparatus further includes a weighing system including a plurality of the first weighing cells 400 and a plurality of the second weighing cells 700. In one embodiment, the multi-material weighing apparatus 10 applied to the 3D printer further includes a weighing cluster box 500, and the weighing cluster box 500 is electrically connected to each of the weighing sensors 400. That is, the weighing cluster 500 is used to collect the weight information of each of the weighing sensors 400 collectively. In one embodiment, the multi-material weighing apparatus 10 applied to the 3D printer further includes a transmission display instrument 600, and the transmission display instrument 600 is electrically connected to the weighing cluster 500 for transmitting weight information to the weighing apparatus. The transmitting display instrument 600 can display weight information sent by each weighing sensor 400 and transmit the weight information to the weighing equipment, so that a centralized control system in the weighing equipment can timely adjust the material proportion and the material quantity used by the 3D printer in the actual printing process according to the weight information. Note that the weighing cluster 500 and the transmission display instrument 600 are components in the weighing system.
Referring to fig. 4, in another embodiment, a material weighing method is provided, which uses any one of the above multiple material weighing apparatuses to weigh a material, and the material weighing method includes the following steps:
s110: setting the blanking amount according to the material formula and the preparation sequence;
specifically, assuming that the mixing capacity of the mixing tank 300 is W Kg/time, W = (X + Y + Z + U) × W according to the formulation of materials required for the 3D printer (wherein X, Y, Z, U is a formulation factor, taking 4 materials as an example). Before blanking, the weight of the peeled mixing tank 300 is 0 Kg, the proportional valve 230 is opened one by one according to the formula sequence and the blanking amount set by the formula, and the blanking amount of the material 1, the blanking amount of which is B = X multiplied by W Kg, the blanking amount of the material 2, the blanking amount of the material 3, the blanking amount of which is D = Z multiplied by W Kg, and the blanking amount of the material 4, the blanking amount of which is E = U multiplied by W Kg are set. And simultaneously, the weight set value of each blanking is as follows: material 1 blanking weighing set value: b Kg; material 2 blanking weighing set value: b + C Kg; material 3 blanking weighing set value: b + C + D Kg; material 4 blanking weighing set value: b + C + D + E Kg. After the blanking value of each material is set, the control system of the multi-material weighing apparatus 10 controls the proportional valve 230 by using an efficient and accurate PID algorithm, so that the actual blanking amount is consistent with the set blanking amount.
S120: detecting the material level of the materials in the material distribution bins by adopting a position detector;
that is, the position detector 220 detects the height position of the material in each distribution bin, and when the height reaches a low position, the material feeding needs to be started correspondingly, and when the height reaches a high position, the material feeding is prepared to be stopped correspondingly.
S130: opening proportional valves corresponding to the material distribution bins one by one for discharging, and weighing the discharging amount;
namely, each proportional valve corresponds to one distribution bin, and when the materials in the distribution bins are at a high position in a to-be-discharged state, the proportional valves are correspondingly opened to start discharging, so that the materials in the distribution bins enter the mixing tanks communicated with the distribution bins. And in the process, materials entering the mixing tank from the material distribution bins are weighed in time so as to definitely know the reduction amount of the materials in the material distribution bins or the increase amount of the materials in the mixing tank. The specific weighing may be measured by a weighing system comprising, for example, a load cell, which is not described in detail again.
S140: the materials were mixed using a mixing tank.
Namely, various materials entering the mixing tank are mixed in the mixing tank and finally output to a printing platform of the 3D printer.
Above-mentioned be applied to multi-material weighing equipment of 3D printer, through set up the material container including a plurality of branch feed bins on the support frame in multi-material weighing equipment, in order to realize corresponding the holding respectively with multiple material in every branch feed bin, and confirm the interior material volume of branch feed bin according to the position detector who sets up on every branch feed bin, in order to trigger correspondingly and open the proportional switch who installs in every branch feed bin exit, realize according to given unloading volume automatically regulated feed volume, carry out the material mixing in the blending tank after the unloading at last. Therefore, errors caused by inconsistent calibration can be effectively eliminated, the measurement precision is greatly improved, the proportion among various materials is strictly ensured, the total weight of mixed materials is accurately obtained, accurate data is provided for the addition of various materials in the 3D printer, and the qualification of printed materials is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The utility model provides a be applied to many materials weighing-appliance of 3D printer which characterized in that, many materials weighing-appliance include: a support frame, a material container and a mixing tank;
the material container is arranged on the supporting frame;
the material container is provided with a plurality of material distribution bins, each material distribution bin is provided with a feeding port and a discharging port, a position detector is arranged at the position, close to the feeding port, of each material distribution bin, proportional valves are mounted at the positions, of the discharging ports, of the material distribution bins, and outlets of the proportional valves are communicated with the mixing tank respectively.
2. The multi-material weighing apparatus applied to a 3D printer according to claim 1, wherein the support frame comprises a support platform and a column, and the column is supported and arranged on one surface of the support platform.
3. The multi-material weighing apparatus applied to a 3D printer according to claim 2, further comprising first weighing sensors, each of which is respectively disposed on a surface of the support platform for weighing the material in the material container.
4. The multi-material weighing apparatus applied to a 3D printer according to claim 2, further comprising a plurality of second weighing sensors, each of the second weighing sensors being suspended from a back surface of the support platform for weighing the material in the mixing tank.
5. The multi-material weighing apparatus applied to a 3D printer according to claim 3, further comprising a weighing cluster box electrically connected to each of the weighing sensors.
6. The multi-material weighing apparatus applied to a 3D printer according to claim 5, further comprising a transmission display instrument electrically connected to the weighing cluster box for conveying weight information to the weighing apparatus.
7. The multi-material weighing device applied to the 3D printer according to claim 1, wherein a suction pump is arranged at the bottom end of the feeding port of each material distribution bin.
8. The multi-material weighing apparatus applied to a 3D printer according to claim 7, wherein the position detector outputs a lower signal and an upper signal respectively, the lower signal triggers the material suction pump to start the material suction operation, and the upper signal triggers the material suction pump to stop the material suction operation.
9. The multi-material weighing apparatus applied to a 3D printer according to claim 1, wherein the material container is in a cross section of a truncated pyramid shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821984826.6U CN209888155U (en) | 2018-11-29 | 2018-11-29 | Multi-material weighing equipment applied to 3D printer |
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| CN201821984826.6U CN209888155U (en) | 2018-11-29 | 2018-11-29 | Multi-material weighing equipment applied to 3D printer |
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| CN209888155U true CN209888155U (en) | 2020-01-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304864A (en) * | 2018-11-29 | 2019-02-05 | 共享智能铸造产业创新中心有限公司 | More material weighing-appliances and material metage method applied to 3D printer |
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- 2018-11-29 CN CN201821984826.6U patent/CN209888155U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304864A (en) * | 2018-11-29 | 2019-02-05 | 共享智能铸造产业创新中心有限公司 | More material weighing-appliances and material metage method applied to 3D printer |
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Effective date of registration: 20211201 Address after: 298, ningshuo South Street, Yinchuan economic and Technological Development Zone, Ningxia Hui Autonomous Region Patentee after: KOCEL INTELLIGENT EQUIPMENT Co.,Ltd. Address before: 750021 science and technology building and office building of small and medium sized enterprise entrepreneurial base in economic and Technological Development Zone, 330 Huanghe Road, Xixia District, Yinchuan City, Ningxia Hui Autonomous Region Patentee before: NATIONAL INTELLIGENT FOUNDRY INDUSTRY INNOVATION CENTER |