Automatic detection blockage feedback system for 3D printing equipment pipeline

Abstract

The utility model provides a 3D printing equipment pipeline automatic detection material blocking feedback system. The 3D printing equipment pipeline automatic detection material blocking feedback system comprises a first material sensor arranged on a raw material bin body, and a first weighing module arranged at the bottom of a second feeding bin body; the plurality of second weighing modules are arranged at the bottom of the mixing chamber; the second material sensor is arranged on the extrusion head; the first material sensor, the first weighing module, the second weighing module and the second material sensor are in communication connection with the control unit, and the first material sensor, the first weighing module, the second weighing module and the second material sensor are used for cooperatively monitoring the pipeline blockage condition in the printing equipment and outputting corresponding signals to a control system. According to the utility model, the source of material blockage can be accurately judged and then troubleshooting is carried out, so that on one hand, the processing efficiency of abnormal occurrence can be effectively improved, and on the other hand, accurate detection is carried out under the condition that sensors are reduced as much as possible, and the cost can be reduced.

Description

Technical Field

[0001] This utility model relates to an automatic detection and feedback system for material blockage in the pipeline of a 3D printing equipment, which is applied in the field of clay 3D printing. Background Technology

[0002] A clay printer is a type of 3D printer specifically designed for printing ceramic materials such as clay, porcelain clay, and purple clay. It has wide applications in ceramic production, artistic creation, education, and scientific research.

[0003] The patent application number 202422359039.4 discloses a clay 3D printing device with a fixed-ratio mixing and conveying of raw materials. This patent discloses that the material is first mixed and stirred in a mixing and stirring mechanism and then extruded through an extrusion component to print the 3D printing material into a preset shape, which can greatly improve efficiency. Since this device combines material conveying and mixing with 3D printing extrusion equipment, the clay material may solidify during use, causing blockage of the equipment pipeline. Therefore, in order to address the above problems, this utility model designs an automatic detection and feedback system for material blockage in the pipeline of 3D printing equipment. Utility Model Content

[0004] This invention provides an automatic detection and feedback system for material blockage in the pipeline of 3D printing equipment, which can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows:

[0006] An automatic detection and feedback system for material blockage in the piping of a 3D printing equipment includes:

[0007] The rack includes a housing chamber and a printing chamber;

[0008] The raw material conveying mechanism installed in the accommodating cavity includes several conveying components. Each conveying component includes a raw material hopper, on which a first material sensor is installed. A first feeding hopper is horizontally connected below the raw material hopper, and a second feeding hopper is connected below the first feeding hopper. A first weighing module is installed at the bottom of the second feeding hopper.

[0009] The mixing extrusion mechanism disposed in the accommodating chamber includes an extrusion assembly that can be laterally moved and disposed in the accommodating chamber and connected to a second feeding bin. The extrusion assembly includes a mixing bin. A plurality of second weighing modules are disposed at the bottom of the mixing chamber. An extrusion head is connected below the mixing bin. A second material sensor is disposed on the extrusion head.

[0010] The first material sensor, the first weighing module, the second weighing module, the second material sensor and the control unit are in communication connection, the first material sensor, the first weighing module, the second weighing module, the second material sensor are used for cooperatively monitoring the pipeline blockage condition in the printing equipment, and output corresponding signals to the control system, and the control system is used for receiving signals.

[0011] As a further improvement, the first material sensor and the second material sensor adopt proximity sensing modules or liquid level sensors.

[0012] As a further improvement, the first weighing module and the second weighing module adopt cantilever beam type weighing sensors.

[0013] As a further improvement, the first feeding bin body is provided with a first spiral auger for material stirring and conveying.

[0014] As a further improvement, the mixing bin body is internally provided with a mixing chamber, the mixing chamber is in communication with the conveying assembly through a pipeline, and the mixing chamber is provided with a stirring assembly.

[0015] As a further improvement, a plurality of second weighing modules are arranged in equidistant circumferential array under the mixing bin body.

[0016] As a further improvement, the rack further comprises a printing platform arranged in the printing chamber, and the printing platform is used for carrying the 3D printing product.

[0017] The utility model discloses beneficial effect is: when detecting the value of first material sensor does not fluctuate, then indicates that the raw material warehouse body is blocked, at this time, the warning light of this place is alarmed and reminded, when detecting that first material sensor fluctuates, the value of material sensor is obviously reduced and then appears stable tendency, and the value of first weighing module is obviously reduced, then explains that the blocking phenomenon between first feeding warehouse body occurs, the warning light of this place is alarmed and reminded, when the material sensor appears obviously reduced and then appears stable tendency, and the value of first weighing module appears unchangeable tendency, then explains that the second feeding warehouse body is blocked, the warning light of this place is alarmed and reminded, when the value of first weighing module presents the downward trend, and the second weighing module (the value of this place is the average value of second weighing module) does not obviously change, then judges the value of second material sensor, if the value of second material sensor does not change, then explains that the extruder is blocked, then the warning light of this place is alarmed and reminded, if the value of second material sensor changes, then explains that the communication pipeline between mixed extrusion mechanism and second feeding warehouse body is blocked, then the warning light of this place is alarmed and reminded, through above -mentioned method can accurately determine the root of material blocking and then carry out the investigation, on one hand can effectively improve the processing efficiency of abnormal occurrence, on the other hand under the condition of as far as possible reducing sensor, can reduce the cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment, should understand, the following drawing only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0019] Figure 1 It is the whole machine structure schematic diagram provided by the utility model embodiment.

[0020] Figure 2 It is the raw material conveying mechanism structure schematic diagram provided by the utility model embodiment.

[0021] Figure 3 It is the mixed extrusion mechanism structure schematic diagram provided by the utility model embodiment.

[0022] Figure 4 It is the cross section structure schematic diagram of mixed extrusion mechanism provided by the utility model embodiment.

[0023] Figure 5 It is the 3D printing equipment pipeline automatic detection blocked feedback system flow chart provided by the utility model embodiment.

[0024] Figure 6 is a quantitative conveying no material feedback control system process schematic diagram provided by the embodiment of the utility model.

[0025] Figure 7 is a 3D printing equipment stable extrusion control system process schematic diagram provided by the embodiment of the utility model.

[0026] The attached drawings are as follows:

[0027] 10, rack, 11, containing chamber, 12, printing chamber,

[0028] 20, raw material conveying mechanism, 21, conveying assembly, 211, raw material bin body, 212, first feeding bin body, 213, first spiral auger, 214, second feeding bin body, 22, first material sensor, 23, first weighing module,

[0029] 30, mixed extrusion mechanism, 31, extrusion assembly, 311, mixing bin body, 312, pipeline, 313, stirring assembly, 314, extrusion head, 32, second weighing module, 33, second material sensor,

[0030] 40, printing platform,

[0031] 50, control unit. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0033] In the description of the utility model, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0034] Reference Figure 1As shown, a kind of clay 3D printing device, including rack 10, the accommodating chamber 11 and the printing chamber 12 are included in the rack 10, raw material conveying mechanism 20 is provided in the accommodating chamber 11.

[0035] Referring to Figure 2 As shown, the raw material conveying mechanism 20 includes several conveying assemblies 21 arranged on the rack 10, in the embodiment, the conveying assemblies 21 are 2, the conveying assemblies 21 include raw material bin body 211, first feeding bin body 212 is connected below the raw material bin body 211, first screw auger 213 is arranged in the first feeding bin body 212 to agitate and convey material, second feeding bin body 214 is connected below the first feeding bin body 212, and the second feeding bin body 214 is connected with mixing extrusion mechanism 30.

[0036] Referring to Figure 3 As shown, the mixing extrusion mechanism 30 includes extrusion assembly 31 that can be transversely moved and communicated with the conveying assembly 21 in the accommodating chamber 11, the extrusion assembly 31 includes mixing bin body 311, the mixing bin body 311 is built-in mixing chamber, the mixing chamber is communicated with the conveying assembly 21 by pipeline 312, stirring assembly 313 is arranged in the mixing chamber, extrusion head 314 is connected below the mixing bin body 311, and the extrusion head 314 is used for extruding material to print.

[0037] Printing platform 40, can be longitudinally slidably arranged in the printing chamber 12, for carrying 3D printing product.

[0038] The utility model discloses a plurality of conveying assemblies 21 arranged on the rack 10 can effectively convey different raw materials to mixing extrusion mechanism 30, first in mixing and stirring mechanism mixes and stirs, then extrudes through extrusion assembly 31, and 3D printing material is printed into the shape of preset, the utility model directly in the printer, after mixing raw materials, printing can greatly improve efficiency.

[0039] The utility model further includes control unit 50, and first material sensor 22 is arranged in the raw material bin body 211 and is communicated with control unit 50, and the first material sensor 22 is the equipment for detecting material state, it can detect the position, quantity, weight, temperature of material and the like parameter, and these parameters are converted into electric signal and are sent to control unit 50, first weighing module 23 is arranged on the conveying assembly 21, and the first weighing module 23 detects weight m iThe first weighing module 23 is communicatively connected to the control unit 50. In this embodiment, there are two first weighing modules 23, and the weights detected by the first weighing modules 23 are m1 and m2, respectively. The first weighing modules 23 are used to detect the weight of the material in the second feeding bin 214. The working principle of the weighing module is based on the piezoresistive effect. When the object being measured applies a downward force to the elastic body, the elastic body will deform, and this deformation will generate strain. This strain is monitored by a piezoresistive resistor. This invention uses a cantilever beam type weighing sensor. When the second feeding bin 214 is placed at the free end of the cantilever beam, the weight of the object will cause the cantilever beam to undergo a slight bending deformation. This deformation will cause the strain gauge to generate strain, and the resistance value of the strain gauge will change accordingly. This change in resistance value will be converted into an electrical signal, and after being processed by the signal processing part, an electrical signal proportional to the weight of the object will be output.

[0040] The system further includes several second weighing modules 32 disposed at the bottom of the mixing chamber 311, wherein the weight detected by the second weighing module 32 is m. i The second weighing module 32 is communicatively connected to the control unit 50. In this embodiment, there are three second weighing modules 32, and the weighing displays corresponding to the three second weighing modules 32 are m1, m2, and m3, respectively. The three second weighing modules 32 are arranged in an equidistant circular array below the mixing chamber 311. The second weighing module 32 can not only measure the weight of the material in the mixing chamber 311, but also detect the levelness of the mixing chamber 311. A second material sensor 33 is provided on the extruder head 314. The second material sensor 33 is communicatively connected to the control unit 50. The second material sensor 33 is used to detect the position, quantity, weight, and other parameters of the material at the extruder head 314.

[0041] Reference Figure 5As shown, since the ceramic mud material may have the phenomenon of solidification, the overall material flow needs to be monitored during the printing process to prevent the problem of equipment blockage caused by material solidification during use. In view of the above problems, the utility model provides a kind of 3D printing equipment pipeline automatic detection blockage feedback system, since the structure mainly blocked in the ceramic mud 3D printing device is raw material bin 211, first feeding bin 212, second feeding bin 214, mixed extrusion mechanism 30 and the communication pipeline 312 between mixed extrusion mechanism 30 and second feeding bin 214, the system detects the above-mentioned part of material blockage and feedback by first material sensor 22, first weighing module 23, second weighing module 32, second material sensor 33, the working principle of the system is as follows: when the value of first material sensor 22 is not fluctuated, it indicates that raw material bin 211 is blocked, at this time, the warning light at this place is alarmed to remind;When first material sensor 22 fluctuates, the value of material sensor obviously decreases and then appears stable trend, and the value of first weighing module 23 obviously decreases, indicating that first feeding bin 212 is blocked, the warning light at this place is alarmed to remind;When the material sensor appears obvious decrease and then appears stable trend, and the value of first weighing module 23 appears unchanging trend, it indicates that second feeding bin 214 is blocked, the warning light at this place is alarmed to remind;When the value of first weighing module 23 presents decreasing trend, second weighing module 32 (the value here is the average value of second weighing module 32) does not obviously change, then the value of second material sensor 33 is judged, if the value of second material sensor 33 does not change, it indicates that extruder is blocked, then the warning light at this place is alarmed to remind;If the value of the second material sensor 33 changes, it indicates that the communication pipeline 312 between the mixing extrusion mechanism 30 and the second feeding bin body 214 is blocked, and the warning light at this position will alarm. Through the above method, the root cause of the material blockage can be accurately judged and investigated, which can not only effectively improve the processing efficiency of the abnormality, but also can reduce the cost by accurately detecting as much as possible without using sensors. In the embodiment, the first material sensor 22 and the second material sensor 33 are proximity sensing modules or liquid level sensors, and the first weighing module 23 and the second weighing module 32 use cantilever beam type weighing sensors, which have higher accuracy. Therefore, the cantilever beam type weighing sensor arranged below the second feeding bin body 214 and the mixing bin body 311 can not only accurately detect the weight of the mixed material, but also detect the blockage of the material. The reason for arranging the material sensor on the raw material bin body 211 and the extruder is that the material sensor can detect the position, quantity, weight and other parameters of the material, but its accuracy is not high, and its cost is relatively low. Therefore, arranging the material sensor on the raw material bin body 211 and the extruder head 314 can not only detect the blockage of the material in cooperation with the weighing sensor, but also effectively reduce the cost.

[0042] Referring to Figure 6As shown, the prior art by setting material sensor on the raw material bin body 211, through the material sensor for raw material bin body 211 no material detection, that is, when the material reaches a certain threshold, prompting the whole machine to add material, but the clay 3D printing equipment and traditional stirring equipment is different, clay 3D printing equipment for material is more accurate, through the material sensor can know the material remaining in the raw material bin body 211, but cannot know the material remaining in the raw material conveying mechanism 20, if the material is not accurate, blindly add material, then in printing a piece of goods, need to print the next piece of goods, may cause the material in the bin to solidify and cause blockage, or difficult to clean problem, therefore, the utility model discloses a kind of 3D printing equipment pipeline automatic detection blockage feedback system, it detects the material remaining in the raw material bin body 211 by first material sensor 22, when first material sensor 22 detects the material weight in raw material bin body 211 is lower than third threshold C, then alarm warning, the material remaining in second feeding bin body 214 is monitored by first weighing module 23, when first weighing module 23 monitors the material weight in second feeding bin body 214 is lower than fourth threshold D, then alarm warning again, when first weighing module 23 monitors the material weight in second feeding bin body 214 is lower than fifth threshold E, then alarm shutdown, define the capacity of the raw material bin body 211 as L1, third threshold C=15~20%*L1, define the capacity of the second feeding bin body 214 as L2, fourth threshold D=8~10%*L2, fifth threshold E=3~5%*L2, in one of the embodiments, third threshold C=16%*L1, fourth threshold D=8%*L2, fifth threshold E=4%*L2, the advantage of such setting is that when the material sensor senses third threshold C, the material needed for the remaining printing product can be prepared, but no material can be added at this time, until second feeding bin body 214 starts to issue a warning, at this time, the material can be added more accurately, to prevent the remaining material in second feeding bin body 214 from solidifying and causing blockage or being difficult to clean after printing the product, when first weighing module 23 detects that the material is lower than fifth threshold E, the equipment automatically alarms and stops, the advantage of such setting is that if the staff forgets to add material, the equipment will automatically stop, and after adding the material, the equipment can be started and the previous printing step can be continued for 3D product printing, if there is no material, the 3D printer can only continue the program setting step for printing, when the material supply is restored, it cannot backtrack to the printing step when the material is broken, at this time, it can only be scrapped, increasing material loss and waste of printing time, therefore, through the method, the mistake is prevented, and the resource waste is effectively prevented.

[0043] Reference Figure 7As shown, in order to detect the levelness of the mixed extrusion mechanism 30, the utility model provides a kind of control system for the stable extrusion of 3D printing equipment, including the second weighing module 32 of one of the present scheme as reference, the detection weight of the second weighing module 32 as reference is M1, during the feeding process, when the value shown by other second weighing module 32 exceeds first threshold value A, then display alarm warning state, during the mixing process, when the value shown by other second weighing module 32 exceeds second threshold value B, then display alarm warning state, the first threshold value A=M1±(5~8)%M1, the second threshold value B=M1±(1~2)%M1, in the embodiment, the first threshold value A=M1±5%M1, that is, during the feeding process, when M1+5%M1>M2>M1-5%M1, M1+5%M1>M3>M1-5%M1, then it indicates that mixing bin body 311 is in horizontal state, if the weight of M2, M3 exceeds this range, then it indicates that mixing bin body 311 is not in horizontal state, at this time, alarm warning is carried out, during the feeding process, since material is not mixed fully, and the number of material in the embodiment is 2, plus water for mixing and stirring, since the weight between material and is different, but mixing bin body 311 is provided in conical shape, material concentrates into bottom with conical structure, although there are numerous uncertainties during the feeding process, but the range of second weighing module 32 will not be too large error, therefore, the first threshold value A is set to M1±(5~8)%M1;In the embodiment, second threshold value B=M1±2%M1, that is, during the mixing process, when M1+2%M1>M2>M1-2%M1, M1+2%M1>M3>M1-2%M1, since material has been initially mixed during the mixing process, therefore, the range of second threshold value B is smaller, since it is necessary to improve work efficiency, usually, mixing starts when feeding, therefore, in the embodiment, mixing process is 5 minutes after feeding and stirring, by the setting between first threshold value A and second threshold value B, the levelness of mixing bin body 311 can be judged, since the equipment combines mixing bin body 311 with extruder, therefore, it is necessary to consider the influence of mixing process on the levelness of extruder, if the levelness of extruder is not enough, then it will affect the forming and printing precision of 3D printing product, the utility model can detect the levelness of mixing bin body 311 by the 3 second weighing modules 32 arranged at the bottom of mixing bin body 311 during the feeding and mixing process, prevent that the lack of levelness of extruder leads to manufacturing defective product, cause material and time waste.

[0044] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A 3D printing equipment pipeline automatic detection of blocked material feedback system, characterized in that, The utility model relates to a kind of 3D printing equipment, including: Rack (10), including accommodating chamber (11) and printing chamber (12); Raw material conveying mechanism (20) is arranged in accommodating chamber (11), including several conveying assemblies (21), the conveying assembly (21) includes raw material bin (211), first material sensor (22) is arranged on the raw material bin (211), first feeding bin (212) is connected below the raw material bin (211), and second feeding bin (214) is connected below the first feeding bin (212), and first weighing module (23) is arranged in the bottom of the second feeding bin (214); Mixing extrusion mechanism (30) is arranged in accommodating chamber (11), including extrusion assembly (31) that can be transversely moved and is connected with second feeding bin (214) in accommodating chamber (11), and the extrusion assembly (31) includes mixing bin (311), and several second weighing modules (32) are arranged in the bottom of the mixing bin (311), and extrusion head (314) is connected below the mixing bin (311), and second material sensor (33) is arranged on the extrusion head (314); The first material sensor (22), first weighing module (23), second weighing module (32), second material sensor (33) are connected with control unit (50), and the first material sensor (22), first weighing module (23), second weighing module (32), second material sensor (33) are used for cooperatively monitoring the pipe blockage condition in printing equipment, and output corresponding signal to control system, and the control system is used for receiving signal.

2. The 3D printing equipment pipeline automatic detection of blocked material feedback system according to claim 1, characterized in that, The first material sensor (22), second material sensor (33) adopt proximity sensing module or liquid level sensor.

3. The 3D printing equipment pipeline automatic detection of blocked material feedback system according to claim 2, characterized in that, The first weighing module (23), second weighing module (32) adopt cantilever beam type weighing sensor.

4. The 3D printing equipment pipeline automatic detection of blocked material feedback system according to claim 1, characterized in that, First spiral auger (213) is arranged in the first feeding bin (212) to agitate and convey material.

5. The 3D printing equipment pipeline automatic detection of blocked material feedback system according to claim 1, characterized in that, Mixing chamber is built-in in the mixing bin (311), the mixing chamber is communicated with the conveying assembly (21) by pipeline (312), and stirring assembly (313) is arranged in the mixing chamber.

6. The 3D printing equipment pipeline automatic detection of blocked material feedback system according to claim 5, characterized in that, Several second weighing modules (32) are equidistantly circumferentially arranged below the mixing bin (311).

7. The 3D printing equipment pipeline automatic detection of blocked material feedback system according to claim 1, characterized in that, The rack (10) further includes printing platform (40) arranged in printing chamber (12), and the printing platform (40) is used to carry 3D printing product.

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