CN113085189B - Smooth 3D printing device of high accuracy based on thing networking and sensing control - Google Patents

Abstract

The invention provides a high-precision smooth 3D printing device based on the Internet of things and sensing monitoring, compared with the prior art, the temperature adjusting device further comprises a temperature adjusting module which is arranged in the nozzle and used for heating and melting printing raw materials in the nozzle, a data analyzing module which is used for dividing a model to be printed into preset printing layers and further generating the printing material consumption corresponding to each printing layer, an instruction module which is used for further calculating and analyzing according to the information condition of the corresponding printing layer to obtain a control instruction for carrying out corresponding accurate temperature adjustment control on the temperature adjusting module, a comparison module which is used for carrying out parameter comparison on a printing layer which is finished to be printed in the printing process and the corresponding printing layer parameter of the computer to obtain the printing condition of the printing layer which is finished, and a modification module which is used for further judging that the printing layer which is finished is not accurate is modified by the comparison module. The invention realizes the high-precision printing of the printing device by reversibly eliminating the corresponding error printing layer.

Description

A high-precision and smooth 3D printing device based on IoT and sensor monitoring

technical field

The invention relates to the technical field of 3D printing devices, in particular to a high-precision smooth 3D printing device based on the Internet of Things and sensor monitoring.

Background technique

3D printing technology can be used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, and many other fields. Food can also be printed by 3D printers, which is the future development direction of 3D printers. 3D printing technology is often used in mold making, industrial design and other fields to make models or for direct manufacturing of some products, which means that this technology is gaining popularity.

The experimental team has been browsing and researching 3D printers and high-precision smoothing technology for a long time. At the same time, relying on relevant resources and conducting a large number of related experiments, it is found that existing technologies such as US07589868B2, US09479667B1, KR101672757B1 and KR101752061B1 exist through a large number of searches. A 3D printing device includes a casing, a crucible set in the casing, a cover plate fixed on the top of the casing and sealing the crucible, a liquid conveying device and a pressure conveying device communicating with the crucible, an outer nozzle fixed at the bottom of the casing, and controlling the crucible A first temperature control device for the temperature of the inner liquid, and an industrial control device; further comprising a second thermocouple and a second heater disposed in the outer nozzle near the outlet, and a second thermocouple and a second heater electrically connected to the second thermocouple and the second heater A temperature controller; a slider is also arranged in the outer nozzle, the slider is connected with the first motor, the outlet can be opened or closed under the driving of the first motor, and the first motor is electrically connected with the industrial control device. However, in the prior art 3D printing device, due to the poor control effect of material discharging and forming, the printing device has low precision of printing products.

In order to solve the problem that the printing accuracy of the common printing device in the field needs to be improved; the staggered layer offset is sent during the printing process, the printed product is different from the computer model; the present invention.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a high-precision and smooth 3D printing device based on the Internet of Things and sensor monitoring, aiming at the deficiencies in the current field.

In order to overcome the deficiencies of the prior art, the present invention adopts the following technical solutions:

Optionally, a high-precision and smooth 3D printing device based on the Internet of Things and sensor monitoring, comprising a nozzle, a body, a computer provided with standard parameter information of the target printing model, and a fixed base for printing the model product, the printing device It also includes a temperature regulation module that is arranged in the nozzle to heat and melt the printing materials in the nozzle, a data analysis module that divides the to-be-printed model into predetermined printing layers and further generates the amount of printing material corresponding to each of the printing layers, According to the information of the corresponding printing layer, further calculation and analysis are performed to obtain the instruction module of the control command to perform the corresponding precise temperature regulation control on the temperature regulation module, the completed printing layer that has been printed during the printing process, and the corresponding printing layer of the computer. A comparison module for performing parameter comparison to obtain the printing conditions of the completed printing layer, a modification module for modifying the completed printing layer that is further judged to be unqualified in accuracy by the comparison module, and a control module for controlling the power consumption in the printing device The control device for the specific operation of the component.

Optionally, the temperature adjustment module includes an infrared thermal phaser arranged inside the body for non-contact temperature monitoring of the nozzle, an infrared thermal phaser arranged around the outer wall of the nozzle and connected to the outer wall of the body at both ends. An annular duct with a hole, an air inlet connected to the annular duct at the top of the body, an air outlet connected to the annular duct at the top of the body, a cold air generating device connected to the air inlet, and The heater is evenly spread on the nozzle and heats and melts the printing material.

Optionally, the data analysis module includes a division unit that divides the target printing model into a predetermined number of printing layers, performs statistical calculation of data on each of the printing layers, and further obtains the printing raw materials required by the printing layers. A quantity statistics unit, a matching unit for matching the printing layers and their corresponding quantities of printing materials, and a storage unit for storing data information processed by the statistics unit and the matching unit.

Optionally, the instruction module includes a data receiving unit that divides the nozzle into a predetermined number of temperature regions and acquires the temperature of each of the temperature regions according to the infrared thermal phaser, and a data analysis module according to the data analysis module. The instruction generation unit that generates the control instructions for generating the working intensity of the heater and the cold air generating device corresponding to the temperature zone and the control terminals respectively arranged on the heater and the cold air generating device are used to generate the quantity of the printing material corresponding to the printing layer. A receiving unit for receiving control instructions and further performing corresponding driving control of the heater and the cooling air device.

Optionally, each of the temperature zones is provided with at least one of the heaters to heat the printing material in the corresponding temperature zone.

Optionally, a camera installed at the top of the body to acquire image data for the printing layer of the printing device, and performing analysis and processing according to the image data to further acquire the recently completed completed printing layer in the image data. The information extraction module of the picture information, the processing module that carries out the edge processing of the picture information and the corresponding two-dimensional coordinate information acquisition of the edge of the picture information, and further analyzes and processes the picture information to obtain the completed printing A calculation unit for layer area information and a result unit for comparing and analyzing the two-dimensional coordinate information and area information with the storage unit of the data analysis module to obtain the accuracy of the printing layer.

Optionally, the computing unit includes processing method steps:

S1: performing marginalization processing on the picture information of the completed printing layer to obtain k unit images Sk with closed edge lines corresponding to the completed printing layer;

S2: Respectively obtain the number of pixels in each of the unit image areas, wherein the number of pixels corresponding to the i-th unit image of one of the completed printing layers is Zi,

其中Sa为所述目标打印模型的参数信息中对应打印层的对应平面面积大小，Cs为所述单元图像的单元像素点对应的面积大小；S3: Further calculations:

Wherein Sa is the corresponding plane area size of the corresponding printing layer in the parameter information of the target printing model, and Cs is the area size corresponding to the unit pixel of the unit image;

S4: Extract a plan view corresponding to the printing layer in the parameter information, that is, a preset image, and overlap the preset image with the unit image corresponding to the unit layer, and further acquire the preset image and the unit image. the number of pixels Y in the overlapping area of the edge image;

其中R为相同所述打印层对应的预设图像与所述单元图像的重叠率修正系数，b为所述重叠率修正系数的优先级相关参数，SS为储存于所述储存单元的所述预设图像的面积大小。S5: further obtain the relative overlap ratio OR of the picture information of the completed printing layer and the corresponding preset image:

Wherein R is the overlap rate correction coefficient of the preset image corresponding to the same printing layer and the unit image, b is the priority-related parameter of the overlap rate correction coefficient, and SS is the preset image stored in the storage unit. Set the area size of the image.

Optionally, the modification module includes a modification mechanism that is disposed on the body and that polishes the pre-printed predetermined printing layer and further eliminates the finished printing layer corresponding to the result unit with unqualified accuracy. 2. A displacement drive mechanism that drives the modification mechanism to lift and lower to the target, the completed printing layer is moved and polished, and an auxiliary mechanism that is arranged above the modification mechanism to further perform timely suction and recovery of the broken particles generated during the work of the modification mechanism. and a cooling device uniformly laid on the inner wall of the body to cool down and solidify the completed printing layer.

Another aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a control method program of the 3D printing device, when the 3D printing device is executed, the high-precision and smooth 3D printing Computational processing and control steps of the device.

The beneficial effects obtained by the present invention are:

1. The present invention is improved by performing effective quantitative treatment on the output of the printing device.

2. The present invention effectively improves the printing accuracy of the printing device by performing shape detection on the printing layer based on sensor monitoring.

3. The present invention further improves the accurate discharge of the printing device by adjusting the discharge of the printing device through intelligent temperature control.

4. The present invention effectively reduces the loss of printing raw materials by grinding and removing the error printing layer, thereby ensuring the accuracy of the printing model.

Description of drawings

The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

FIG. 1 is a modular schematic diagram of the high-precision smooth 3D printing device of the present invention.

FIG. 2 is a modular schematic diagram of the temperature regulation module of the present invention.

FIG. 3 is a schematic flowchart of a computing unit of the present invention.

FIG. 4 is a schematic structural diagram of a modification module of the present invention.

FIG. 5 is an experimental schematic diagram of the high-precision smooth 3D printing device of the present invention.

Description of reference numerals: 1-fixed seat; 2-displacement drive mechanism; grinding device.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with its embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention, not to limit the present invention. invention. Other systems, methods and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in the following detailed description and will be apparent from the following detailed description.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or component must have a specific orientation. Orientation structure and operation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on the present patent. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Example 1:

This embodiment constructs a printing device with a three-dimensional printing system that quantitatively feeds and precisely fixes the printing layer of the printing device;

A high-precision and smooth 3D printing device based on the Internet of Things and sensor monitoring, comprising a nozzle, a body, a computer provided with standard parameter information of a target printing model, and a fixed base for printing the model product, the printing device also includes a The nozzle heats and melts the printing material in the nozzle, and the temperature adjustment module divides the model to be printed into predetermined printing layers and further generates a data analysis module for the amount of printing material corresponding to each of the printing layers. The information situation of the printing layer is further calculated and analyzed to obtain the command module of the control command for the corresponding precise temperature regulation control of the temperature regulation module, and the parameters of the completed printing layer that has been printed during the printing process and the parameters of the corresponding printing layer of the computer are compared. A comparison module for obtaining the printing status of the completed printing layer, a modification module for modifying the completed printing layer that is further judged by the comparison module to be unqualified in accuracy, and a modification module for controlling the specific work of each electrical component in the printing device A control device, the temperature adjustment module includes an infrared thermal phaser arranged inside the body to monitor the temperature of the nozzle in a non-contact manner; An annular duct with holes, an air inlet connected to the annular duct at the top of the body, an air outlet connected to the annular duct at the top of the body, a cold air generating device connected to the air inlet, and a uniform air outlet. The heater is laid on the nozzle and heats and melts the printing material, and the data analysis module includes a division unit that divides the target printing model into a predetermined number of printing layers, and performs data analysis on each of the printing layers. Statistical calculation further obtains the statistical unit of the quantity of the printing raw materials required by the printing layer, the matching unit that matches the printing layer and the corresponding quantity of printing raw materials, and the data information obtained by processing the statistical unit and the matching unit A storage unit for storing, the instruction module includes a data receiving unit that divides the nozzle into a predetermined number of temperature regions and obtains the temperature of each of the temperature regions according to the infrared thermal phaser; The analysis module generates an instruction generation unit that generates a control instruction for controlling the working intensity of the heater and the cold air generating device corresponding to the temperature zone by the quantity of printing materials corresponding to the printing layer, and a pair of control terminals respectively arranged on the heater and the cold air generating device. a receiving unit that receives the control command and further performs corresponding driving control of the heater and the cooling air device, and each of the temperature zones is provided with at least one of the heaters to heat the printing material in the corresponding temperature zone, A camera installed at the top of the machine body to acquire image data of the printing layer of the printing device, and performing analysis and processing according to the image data to further acquire the picture information of the most recently completed printing layer in the image data. An information extraction module, a processing module that performs edge processing on the picture information and obtains corresponding two-dimensional coordinate information on the edge of the picture information, and further analyzes and processes the picture information to obtain the area information of the completed printing layer calculation sheet The element and the result unit that compares and analyzes the two-dimensional coordinate information and area information with the storage unit of the data analysis module to obtain the accuracy of the printing layer, the modification module includes a unit that is arranged on the body and completes the printing process. A modification mechanism that eliminates the unqualified accuracy of the finished printed layer corresponding to the result unit and drives the modification mechanism to lift and lower to the target displacement of the finished printed layer for moving and grinding. A driving mechanism, an auxiliary mechanism arranged above the modification mechanism to further perform timely suction and recovery of the broken particles generated during the operation of the modification mechanism, and a cooling mechanism uniformly laid on the inner wall of the body to cool and solidify the completed printed layer Another aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a control method program of the 3D printing device, and when the 3D printing device is executed, the high precision is achieved Computational processing and control steps for smooth 3D printing devices;

The printing device includes a pneumatic drive source for the nozzles including an air compressor unit and/or an air storage tank for providing a high-pressure gas source, a melting furnace for melting the printing raw materials, and quantitatively driving the melting raw materials in the melting furnace to The first discharge drive source of the cavity inside the nozzle and the second discharge drive source for quantitatively driving the melted raw material of the cavity channel in the nozzle to transfer out of the nozzle for stereotype printing, wherein the first discharge The driving source includes at least one ventilation pipe connected to the melting furnace and the air pressure transmission source, and a first control device arranged at the connecting end of the ventilation pipe and the melting furnace to control the communication between the melting furnace and the ventilation pipe. an electromagnetic valve, the second discharge drive source includes an air duct that communicates with a pneumatic transmission source and then leads to a high-pressure air source to the nozzle and a second electromagnetic valve that controls the communication between the air duct and the nozzle. The second discharge driving source pushes the printing material in the nozzle to flow out of the nozzle through the strong air pressure generated by the high-pressure air source. An infrared thermal imager, an annular duct surrounding the nozzle, an air inlet connected to the annular duct at the top of the body, an air outlet of the annular duct connected to the top of the body, and the inlet A cold air generating device connected with air holes and a heater uniformly laid on the nozzle and heating and melting the printing material, wherein the nozzle is divided into heating corresponding to the heater according to the distribution area of the heater Each of the heating zones is pre-set with a number n for identifying and distinguishing, where n is a natural number, wherein the temperature adjustment module further includes further analysis and processing on the nozzle temperature distribution map obtained by the infrared thermal imager Then, an instruction generation unit for controlling the control instruction of the heating intensity of the heater in the corresponding area of the nozzle is produced, wherein the processing steps of the instruction generation unit include:

Step 1: Divide the temperature distribution map of the nozzle obtained by the infrared thermography according to the preset heating zone, and obtain several heating zone temperature distribution sub-maps Sn, where n is the number of the corresponding heating zone;

Step 2: Convert the temperature distribution map into a gray value image representation, simultaneously acquire the depth of gray value of each point on the temperature distribution map, and further obtain the corresponding gray value of the corresponding pixel point of the temperature distribution map Depth to the corresponding temperature value Tp: Tp=g·c· ^ka (1), where g is the corresponding gray value depth in one pixel, where g={x∈N|0≤x≤255}, c is the priority relationship coefficient between the corresponding temperature value on the temperature distribution map and the gray value depth corresponding to the gray value image in the same area obtained by the technicians in the neighborhood through a lot of repeated use training, k is the external work of the printing device The temperature value of the area, wherein k is obtained by a temperature sensor set outside the device, and a is the relevant temperature correction parameter of the temperature distribution map;

Step 3: Identify the gray depth value corresponding to each pixel in the relative temperature distribution sub-map, further obtain the corresponding pixel number Dn in the temperature distribution sub-map, and the sum of the gray depth values in the temperature distribution sub-map is G, Then, the temperature distribution value Tn corresponding to the temperature distribution sub-graph is obtained: Tn=1/Dn·G(g·c· ^ka )·B ^j (2), where Tn is the temperature distribution value corresponding to the temperature distribution sub-graph Sn , B is the correction coefficient related to the temperature distribution value, j is the priority parameter of the correction coefficient related to the temperature distribution value, wherein the priority parameters of the correction coefficient related to the temperature distribution value and the correction coefficient related to the temperature distribution value are determined by the technicians in the neighborhood after a lot of The experimental training is obtained, which will not be repeated here;

Step 4: Qn=(Dn^(1/f)·Tn)/T _e ^p(3), wherein Qn is the target heating temperature corresponding to the heater corresponding to the temperature distribution subgraph Sn, and T _e is The melting point of the printing raw material, p is the pressure correction coefficient of the melting point of the printing raw material, and f is the area size correction coefficient of the temperature distribution sub-graph, where f and p are obtained by those skilled in the art through a large number of repeated experiments. This will not be repeated;

Step 5: Further, according to the target heating temperature of the heater corresponding to the temperature distribution sub-graph, the instruction generation unit further generates a corresponding control instruction and sends it to the corresponding heater and the cold air generation device for coordinated temperature control;

When the temperature distribution value of the heating area corresponding to the nozzle exceeds a preset upper limit temperature distribution threshold, the control device turns on the cold air sending device to perform heat exchange and cooling in the nozzle area to prevent the nozzle from being caused by excessive temperature. Corresponding electrical components are damaged and thus affect the use of the printing device. The printing device of the present invention controls the precise temperature of the printing material in the nozzle to avoid the solidification of the printing material in the nozzle and further cause the nozzle to be blocked. Material discontinuity causes the existence of bubbles in the printed product and structural deformation, and at the same time effectively protects the safety of the nozzle and prolongs the service life of the nozzle.

Embodiment 2:

The present embodiment constructs a printing device having a comparison module for detecting the printed layers of the printing device and further determining the accuracy of the corresponding printing layers;

A high-precision and smooth 3D printing device based on the Internet of Things and sensor monitoring, comprising a nozzle, a body, a computer provided with standard parameter information of a target printing model, and a fixed base for printing the model product, the printing device also includes a The nozzle heats and melts the printing material in the nozzle, and the temperature adjustment module divides the model to be printed into predetermined printing layers and further generates a data analysis module for the amount of printing material corresponding to each of the printing layers. The information situation of the printing layer is further calculated and analyzed to obtain the command module of the control command for the corresponding precise temperature regulation control of the temperature regulation module, and the parameters of the completed printing layer that has been printed during the printing process and the parameters of the corresponding printing layer of the computer are compared. A comparison module for obtaining the printing status of the completed printing layer, a modification module for modifying the completed printing layer that is further judged by the comparison module to be unqualified in accuracy, and a modification module for controlling the specific work of each electrical component in the printing device A control device, the temperature adjustment module includes an infrared thermal phaser arranged inside the body to monitor the temperature of the nozzle in a non-contact manner; An annular duct with holes, an air inlet connected to the annular duct at the top of the body, an air outlet connected to the annular duct at the top of the body, a cold air generating device connected to the air inlet, and a uniform air outlet. The heater is laid on the nozzle and heats and melts the printing material, and the data analysis module includes a division unit that divides the target printing model into a predetermined number of printing layers, and performs data analysis on each of the printing layers. Statistical calculation further obtains the statistical unit of the quantity of the printing raw materials required by the printing layer, the matching unit that matches the printing layer and the corresponding quantity of printing raw materials, and the data information obtained by processing the statistical unit and the matching unit A storage unit for storing, the instruction module includes a data receiving unit that divides the nozzle into a predetermined number of temperature regions and obtains the temperature of each of the temperature regions according to the infrared thermal phaser; The analysis module generates an instruction generation unit that generates a control instruction for controlling the working intensity of the heater and the cold air generating device corresponding to the temperature zone by the quantity of printing materials corresponding to the printing layer, and a pair of control terminals respectively arranged on the heater and the cold air generating device. a receiving unit that receives the control command and further performs corresponding driving control of the heater and the cooling air device, and each of the temperature zones is provided with at least one of the heaters to heat the printing material in the corresponding temperature zone, A camera installed at the top of the machine body to acquire image data of the printing layer of the printing device, and performing analysis and processing according to the image data to further acquire the picture information of the most recently completed printing layer in the image data. An information extraction module, a processing module that performs edge processing on the picture information and obtains corresponding two-dimensional coordinate information on the edge of the picture information, and further analyzes and processes the picture information to obtain the area information of the completed printing layer calculation sheet The element and the result unit that compares and analyzes the two-dimensional coordinate information and area information with the storage unit of the data analysis module to obtain the accuracy of the printing layer, the modification module includes a unit that is arranged on the body and completes the printing process. A modification mechanism that eliminates the unqualified accuracy of the finished printed layer corresponding to the result unit and drives the modification mechanism to lift and lower to the target displacement of the finished printed layer for moving and grinding. A driving mechanism, an auxiliary mechanism arranged above the modification mechanism to further perform timely suction and recovery of the broken particles generated during the operation of the modification mechanism, and a cooling mechanism uniformly laid on the inner wall of the body to cool and solidify the completed printed layer Another aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a control method program of the 3D printing device, and when the 3D printing device is executed, the high precision is achieved Computational processing and control steps for smooth 3D printing devices;

The printing device includes a pneumatic drive source for the nozzles including an air compressor unit and/or an air storage tank for providing a high-pressure gas source, a melting furnace for melting the printing raw materials, and quantitatively driving the melting raw materials in the melting furnace to The first discharge drive source of the cavity inside the nozzle and the second discharge drive source for quantitatively driving the melted raw material of the cavity channel in the nozzle to transfer out of the nozzle for stereotype printing, wherein the first discharge The driving source includes at least one ventilation pipe connected to the melting furnace and the air pressure transmission source, and a first control device arranged at the connecting end of the ventilation pipe and the melting furnace to control the communication between the melting furnace and the ventilation pipe. an electromagnetic valve, the second discharge drive source includes an air duct that communicates with a pneumatic transmission source and then leads to a high-pressure air source to the nozzle and a second electromagnetic valve that controls the communication between the air duct and the nozzle. The second discharge driving source pushes the printing material in the nozzle to flow out of the nozzle through the strong air pressure generated by the high-pressure air source. An infrared thermal imager, an annular duct surrounding the nozzle, an air inlet connected to the annular duct at the top of the body, an air outlet of the annular duct connected to the top of the body, and the inlet A cold air generating device connected with air holes and a heater uniformly laid on the nozzle and heating and melting the printing material, wherein the nozzle is divided into heating corresponding to the heater according to the distribution area of the heater Each of the heating zones is pre-set with a number n for identifying and distinguishing, where n is a natural number, wherein the temperature adjustment module further includes further analysis and processing on the nozzle temperature distribution map obtained by the infrared thermal imager Then, an instruction generation unit for controlling the control instruction of the heating intensity of the heater in the corresponding area of the nozzle is produced, wherein the processing steps of the instruction generation unit include:

Step 1: Divide the temperature distribution map of the nozzle obtained by the infrared thermography according to the preset heating zone, and obtain several heating zone temperature distribution sub-maps Sn, where n is the number of the corresponding heating zone;

Step 2: Convert the temperature distribution map into a gray value image representation, simultaneously acquire the depth of gray value of each point on the temperature distribution map, and further obtain the corresponding gray value of the corresponding pixel point of the temperature distribution map Depth to the corresponding temperature value Tp: Tp=g·c· ^ka (1), where g is the corresponding gray value depth in one pixel, where g={x∈N|0≤x≤255}, c is the priority relationship coefficient between the corresponding temperature value on the temperature distribution map and the gray value depth corresponding to the gray value image in the same area obtained by the technicians in the neighborhood through a lot of repeated use training, k is the external work of the printing device The temperature value of the area, where k is obtained by a temperature sensor arranged outside the device, and a is the relevant temperature correction parameter of the temperature distribution map obtained by the technicians in the neighborhood through a large number of repeated use training;

Step 3: Identify the gray depth value corresponding to each pixel in the relative temperature distribution sub-map, further obtain the corresponding pixel number Dn in the temperature distribution sub-map, and the sum of the gray depth values in the temperature distribution sub-map is G, Then, the temperature distribution value Tn corresponding to the temperature distribution sub-graph is obtained: Tn=1/Dn·G(g·c· ^ka )·B ^j (2), where Tn is the temperature distribution value corresponding to the temperature distribution sub-graph Sn , B is the correction coefficient related to the temperature distribution value, j is the priority parameter of the correction coefficient related to the temperature distribution value, wherein the priority parameters of the correction coefficient related to the temperature distribution value and the correction coefficient related to the temperature distribution value are determined by the technicians in the neighborhood after a lot of The experimental training is obtained, which will not be repeated here;

Step 4: Qn=(Dn^(1/f)·Tn)/T _e ^p(3), wherein Qn is the target heating temperature corresponding to the heater corresponding to the temperature distribution subgraph Sn, and T _e is The melting point of the printing raw material, p is the pressure correction coefficient of the melting point of the printing raw material, and f is the area size correction coefficient of the temperature distribution sub-graph, where f and p are obtained by those skilled in the art through a large number of repeated experiments. This will not be repeated;

Step 5: Further, according to the target heating temperature of the heater corresponding to the temperature distribution sub-graph, the instruction generation unit further generates a corresponding control instruction and sends it to the corresponding heater and the cold air generation device for coordinated temperature control;

When the temperature distribution value of the heating area corresponding to the nozzle exceeds a preset upper limit temperature distribution threshold, the control device turns on the cold air sending device to perform heat exchange and cooling in the nozzle area to prevent the nozzle from being caused by excessive temperature. Corresponding electrical components are damaged and thus affect the use of the printing device. The printing device of the present invention controls the precise temperature of the printing material in the nozzle to avoid the solidification of the printing material in the nozzle and further cause the nozzle to be blocked. Material discontinuity causes bubbles in the printed product and structural deformation, and at the same time effectively protects the safety of the nozzle and prolongs the service life of the nozzle;

The camera device is configured to obtain pictures of the printing conditions of the corresponding printing layers in the printing device, and the camera device is configured to obtain the plane picture information corresponding to different blackness depths of the printing layers, so as to compare the blackness depths of the corresponding printing layers. The camera device performs picture extraction relative to the printing layer with the shortest distance, and the calculation unit includes:

S1: performing marginalization processing on the picture information of the completed printing layer to obtain k unit images Sk with closed edge lines corresponding to the completed printing layer;

S2: Respectively obtain the number of pixels in each of the unit image areas, wherein the number of pixels corresponding to the i-th unit image of one of the completed printing layers is Zi,

其中Sa为所述目标打印模型的参数信息中对应打印层的对应平面面积大小，Cs为所述单元图像的单元像素点对应的面积大小；S3: Further calculations:

Wherein Sa is the corresponding plane area size of the corresponding printing layer in the parameter information of the target printing model, and Cs is the area size corresponding to the unit pixel of the unit image;

S4: Extract a plan view corresponding to the printing layer in the parameter information, that is, a preset image, and overlap the preset image with the unit image corresponding to the unit layer, and further acquire the preset image and the unit image. The number of pixels Y in the overlapping area of the edge image, wherein the Zi and Y are obtained by the relevant software calculation statistical program in the computer, and will not be repeated here;

其中R为相同所述打印层对应的预设图像与所述单元图像的重叠率修正系数，b为所述重叠率修正系数的优先级相关参数，其中SS为预先储存于所述储存单元与所述单元图像相同的所述打印层对应的所述预设图像的面积大小，R和b由本领域技术人员经大量实验训练获得，在此不再赘述；S5: further obtain the relative overlap ratio OR of the picture information of the completed printing layer and the corresponding preset image:

Wherein R is the overlap rate correction coefficient of the preset image corresponding to the same printing layer and the unit image, b is the priority-related parameter of the overlap rate correction coefficient, and SS is pre-stored in the storage unit and the unit image. The area size of the preset image corresponding to the printing layer with the same unit image, R and b are obtained by those skilled in the art through a lot of experimental training, and will not be repeated here;

The data analysis module is arranged in the computer to analyze and process the standard parameter information of the target printing model, and the standard parameter information includes the shape features and size parameters of the target printing model, wherein the comparison module further includes The lower threshold of the overlap ratio corresponding to the overlap ratio of the corresponding preset image and the edge line image obtained by those skilled in the art through a large number of repeated experimental training, when the relative overlap ratio OR is greater than the lower threshold, the comparison module confirms In order that the corresponding printing layer is qualified, when the relative overlap ratio OR is less than the lower threshold, the comparison module confirms that the corresponding printing layer is unqualified, and the modification module further performs corresponding modification work according to the result of the comparison module;

The present invention divides the preset printing layer on the preset three-dimensional model set on the body to be printed, and further obtains the actual printing layer and the preset printing layer according to the comparison between the actual printing layer and the preset printing layer. The layer error further determines the accuracy of the printed layer corresponding to the printing device of the present invention.

Embodiment three:

This embodiment constructs a printing device that grinds and removes the printing layer for which the preset error threshold is detected and obtained through analysis by the comparison module, so as not to affect the modification module of other completed printing layers of the printing device ;

A high-precision and smooth 3D printing device based on the Internet of Things and sensor monitoring, comprising a nozzle, a body, a computer provided with standard parameter information of a target printing model, and a fixed base for printing the model product, the printing device also includes a The nozzle heats and melts the printing material in the nozzle, and the temperature adjustment module divides the model to be printed into predetermined printing layers and further generates a data analysis module for the amount of printing material corresponding to each of the printing layers. The information situation of the printing layer is further calculated and analyzed to obtain the command module of the control command for the corresponding precise temperature regulation control of the temperature regulation module, and the parameters of the completed printing layer that has been printed during the printing process and the parameters of the corresponding printing layer of the computer are compared. A comparison module for obtaining the printing status of the completed printing layer, a modification module for modifying the completed printing layer that is further judged by the comparison module to be unqualified in accuracy, and a modification module for controlling the specific work of each electrical component in the printing device A control device, the temperature adjustment module includes an infrared thermal phaser arranged inside the body to monitor the temperature of the nozzle in a non-contact manner; An annular duct with holes, an air inlet connected to the annular duct at the top of the body, an air outlet connected to the annular duct at the top of the body, a cold air generating device connected to the air inlet, and a uniform air outlet. The heater is laid on the nozzle and heats and melts the printing material, and the data analysis module includes a division unit that divides the target printing model into a predetermined number of printing layers, and performs data analysis on each of the printing layers. Statistical calculation further obtains the statistical unit of the quantity of the printing raw materials required by the printing layer, the matching unit that matches the printing layer and the corresponding quantity of printing raw materials, and the data information obtained by processing the statistical unit and the matching unit A storage unit for storing, the instruction module includes a data receiving unit that divides the nozzle into a predetermined number of temperature regions and obtains the temperature of each of the temperature regions according to the infrared thermal phaser; The analysis module generates an instruction generation unit that generates a control instruction for controlling the working intensity of the heater and the cold air generating device corresponding to the temperature zone by the quantity of printing materials corresponding to the printing layer, and a pair of control terminals respectively arranged on the heater and the cold air generating device. a receiving unit that receives the control command and further performs corresponding driving control of the heater and the cooling air device, and each of the temperature zones is provided with at least one of the heaters to heat the printing material in the corresponding temperature zone, A camera installed at the top of the machine body to acquire image data of the printing layer of the printing device, and performing analysis and processing according to the image data to further acquire the picture information of the most recently completed printing layer in the image data. An information extraction module, a processing module that performs edge processing on the picture information and obtains corresponding two-dimensional coordinate information on the edge of the picture information, and further analyzes and processes the picture information to obtain the area information of the completed printing layer calculation sheet The element and the result unit that compares and analyzes the two-dimensional coordinate information and area information with the storage unit of the data analysis module to obtain the accuracy of the printing layer, the modification module includes a unit that is arranged on the body and completes the printing process. A modification mechanism that eliminates the unqualified accuracy of the finished printed layer corresponding to the result unit and drives the modification mechanism to lift and lower to the target displacement of the finished printed layer for moving and grinding. A driving mechanism, an auxiliary mechanism arranged above the modification mechanism to further perform timely suction and recovery of the broken particles generated during the operation of the modification mechanism, and a cooling mechanism uniformly laid on the inner wall of the body to cool and solidify the completed printed layer Another aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium includes a control method program of the 3D printing device, and when the 3D printing device is executed, the high precision is achieved Computational processing and control steps for smooth 3D printing devices;

The printing device includes a pneumatic drive source for the nozzles including an air compressor unit and/or an air storage tank for providing a high-pressure gas source, a melting furnace for melting the printing raw materials, and quantitatively driving the melting raw materials in the melting furnace to The first discharge drive source of the cavity inside the nozzle and the second discharge drive source for quantitatively driving the melted raw material of the cavity channel in the nozzle to transfer out of the nozzle for stereotype printing, wherein the first discharge The driving source includes at least one ventilation pipe connected to the melting furnace and the air pressure transmission source, and a first control device arranged at the connecting end of the ventilation pipe and the melting furnace to control the communication between the melting furnace and the ventilation pipe. an electromagnetic valve, the second discharge drive source includes an air duct that communicates with a pneumatic transmission source and then leads to a high-pressure air source to the nozzle and a second electromagnetic valve that controls the communication between the air duct and the nozzle. The second discharge driving source pushes the printing material in the nozzle to flow out of the nozzle through the strong air pressure generated by the high-pressure air source. An infrared thermal imager, an annular duct surrounding the nozzle, an air inlet connected to the annular duct at the top of the body, an air outlet of the annular duct connected to the top of the body, and the inlet A cold air generating device connected with air holes and a heater uniformly laid on the nozzle and heating and melting the printing material, wherein the nozzle is divided into heating corresponding to the heater according to the distribution area of the heater Each of the heating zones is pre-set with a number n for identifying and distinguishing, where n is a natural number, wherein the temperature adjustment module further includes further analysis and processing on the nozzle temperature distribution map obtained by the infrared thermal imager Then, an instruction generation unit for controlling the control instruction of the heating intensity of the heater in the corresponding area of the nozzle is produced, wherein the processing steps of the instruction generation unit include:

Step 1: Divide the temperature distribution map of the nozzle obtained by the infrared thermography according to the preset heating zone, and obtain several heating zone temperature distribution sub-maps Sn, where n is the number of the corresponding heating zone;

Step 2: Convert the temperature distribution map into a gray value image representation, simultaneously acquire the depth of gray value of each point on the temperature distribution map, and further obtain the corresponding gray value of the corresponding pixel point of the temperature distribution map Depth to the corresponding temperature value Tp: Tp=g·c· ^ka (1), where g is the corresponding gray value depth in one pixel, where g={x∈N|0≤x≤255}, c is the priority relationship coefficient between the corresponding temperature value on the temperature distribution map and the gray value depth corresponding to the gray value image in the same area obtained by the technicians in the neighborhood through a lot of repeated use training, k is the external work of the printing device The temperature value of the area, wherein k is obtained by a temperature sensor set outside the device, and a is the relevant temperature correction parameter of the temperature distribution map;

Step 3: Identify the gray depth value corresponding to each pixel in the relative temperature distribution sub-map, further obtain the corresponding pixel number Dn in the temperature distribution sub-map, and the sum of the gray depth values in the temperature distribution sub-map is G, Then, the temperature distribution value Tn corresponding to the temperature distribution sub-graph is obtained: Tn=1/Dn·G(g·c· ^ka )·B ^j (2), where Tn is the temperature distribution value corresponding to the temperature distribution sub-graph Sn , B is the correction coefficient related to the temperature distribution value, j is the priority parameter of the correction coefficient related to the temperature distribution value, wherein the priority parameters of the correction coefficient related to the temperature distribution value and the correction coefficient related to the temperature distribution value are determined by the technicians in the neighborhood after a lot of The experimental training is obtained, which will not be repeated here;

Step 4: Qn=(Dn^(1/f)·Tn)/T _e ^p(3), wherein Qn is the target heating temperature corresponding to the heater corresponding to the temperature distribution subgraph Sn, and T _e is The melting point of the printing raw material, p is the pressure correction coefficient of the melting point of the printing raw material, and f is the area size correction coefficient of the temperature distribution sub-graph, where f and p are obtained by those skilled in the art through a large number of repeated experiments. This will not be repeated;

Step 5: Further, according to the target heating temperature of the heater corresponding to the temperature distribution sub-graph, the instruction generation unit further generates a corresponding control instruction and sends it to the corresponding heater and the cold air generation device for coordinated temperature control;

When the temperature distribution value of the heating area corresponding to the nozzle exceeds a preset upper limit temperature distribution threshold, the control device turns on the cold air sending device to perform heat exchange and cooling in the nozzle area to prevent the nozzle from being caused by excessive temperature. Corresponding electrical components are damaged and thus affect the use of the printing device. The printing device of the present invention controls the precise temperature of the printing material in the nozzle to avoid the solidification of the printing material in the nozzle and further cause the nozzle to be blocked. Material discontinuity causes bubbles in the printed product and structural deformation, and at the same time effectively protects the safety of the nozzle and prolongs the service life of the nozzle;

The camera device is configured to obtain pictures of the printing conditions of the corresponding printing layers in the printing device, and the camera device is configured to obtain the plane picture information corresponding to different blackness depths of the printing layers, so as to compare the blackness depths of the corresponding printing layers. The camera device performs picture extraction relative to the printing layer with the shortest distance, and the calculation unit includes:

S1: performing marginalization processing on the picture information of the completed printing layer to obtain k unit images Sk with closed edge lines corresponding to the completed printing layer;

S2: Respectively obtain the number of pixels in each of the unit image areas, wherein the number of pixels corresponding to the i-th unit image of one of the completed printing layers is Zi,

其中Sa为所述目标打印模型的参数信息中对应打印层的对应平面面积大小，Cs为所述单元图像的单元像素点对应的面积大小；S3: Further calculations:

Wherein Sa is the corresponding plane area size of the corresponding printing layer in the parameter information of the target printing model, and Cs is the area size corresponding to the unit pixel of the unit image;

S4: Extract a plan view corresponding to the printing layer in the parameter information, that is, a preset image, and overlap the preset image with the unit image corresponding to the unit layer, and further acquire the preset image and the unit image. The number of pixels Y in the overlapping area of the edge image, wherein the Zi and Y are obtained by the relevant software calculation statistical program in the computer, and will not be repeated here;

其中R为相同所述打印层对应的预设图像与所述单元图像的重叠率修正系数，b为所述重叠率修正系数的优先级相关参数，其中SS为预先储存于所述储存单元与所述单元图像相同的所述打印层对应的所述预设图像的面积大小，R和b由本领域技术人员经大量实验训练获得，在此不再赘述；S5: further obtain the relative overlap ratio OR of the picture information of the completed printing layer and the corresponding preset image:

Wherein R is the overlap rate correction coefficient of the preset image corresponding to the same printing layer and the unit image, b is the priority-related parameter of the overlap rate correction coefficient, and SS is pre-stored in the storage unit and the unit image. The area size of the preset image corresponding to the printing layer with the same unit image, R and b are obtained by those skilled in the art through a lot of experimental training, and will not be repeated here;

The data analysis module is arranged in the computer to analyze and process the standard parameter information of the target printing model, and the standard parameter information includes the shape features and size parameters of the target printing model, wherein the comparison module further includes The lower threshold of the overlap ratio corresponding to the overlap ratio of the corresponding preset image and the edge line image obtained by those skilled in the art through a large number of repeated experimental training, when the relative overlap ratio OR is greater than the lower threshold, the comparison module confirms In order that the corresponding printing layer is qualified, when the relative overlap ratio OR is less than the lower threshold, the comparison module confirms that the corresponding printing layer is unqualified, and the modification module further performs corresponding modification work according to the result of the comparison module;

The present invention divides the preset printing layer on the preset three-dimensional model set on the body to be printed, and further obtains the actual printing layer and the preset printing layer according to the comparison between the actual printing layer and the preset printing layer. The error of the layer further determines the accuracy of the completed printing layer corresponding to the printing device of the present invention;

The displacement driving mechanism is a programmable manipulator with multiple joints, wherein the underlying data of each joint of the manipulator can be queried and controlled to ensure the accuracy of the modification module, and the cooling device is uniformly laid on all the joints. The inner wall of the body cools and solidifies the corresponding printed layer that has been printed, so as to prevent the modification module from damaging the unshaped non-target printed layer during the modification process, wherein the modification mechanism includes a polishing device, which is fixed on the polishing device. The mounting seat of the displacement driving mechanism, the data feedback module, and the processing module that receives the feedback data from the data feedback module and further precisely adjusts the displacement driving mechanism, wherein the displacement driving mechanism is used to go around a predetermined design path The movement grinds and removes the printing layer of a predetermined height, the data feedback module is set to obtain real-time profile data of the position information and contact force information of the grinding device during the grinding process, and the processing module collects the data according to the real-time profile data. The position information and contact force information of the grinding device of the feedback module further generate compensation signals and output them to the displacement driving mechanism. The intelligent compensation path planning of the displacement driving mechanism formed by each joint of the displacement driving mechanism improves the accuracy of the corresponding printing layer. Revise;

The grinding device includes a mounting seat, an electromagnetic proportional valve, an electromagnetic pressure reducing valve, a pneumatic valve piston cylinder, a grinding head, a displacement sensor for detecting the position information of the grinding head, and a contact force for detecting the grinding head, which are connected in sequence. A gravity sensor for information, a displacement sensor for obtaining the movement trajectory of the piston rod of the pneumatic valve piston cylinder, and an angle sensor for determining the real-time position, angular velocity and angular acceleration information of the working contact point of the grinding head during the machining process, the auxiliary mechanism In order to evenly surround a plurality of umbrella-shaped suction heads arranged on the outer wall of the end joint of the displacement driving mechanism, the conduits respectively connected to the through holes at the top of the umbrella-shaped suction heads, communicate with the conduits and store printing scraps The storage box and the suction device respectively connected to the storage box and providing suction negative pressure for the conduit, when the modification module performs the corresponding polishing modification of the completed printing layer, the auxiliary device is turned on, and the auxiliary device is turned on. Driven by the negative pressure of the air suction device, the printing scraps generated by the grinding head grinding the corresponding printing layer are further recovered by the suction head to the storage box in time to realize the removal of the corresponding errors in the modification module. After the printing layer is completed, the influence of the printing scraps on the subsequent printing work is avoided to improve the smoothness of the printing model of the printing device;

The mounting seat is fixed on the end joint of the displacement driving mechanism, the electromagnetic pressure reducing valve is set to control the contact force of the front end of the grinding head, and the pneumatic valve piston cylinder is connected to the grinding head for The completed printing layer of the grinding head grinding error is driven, the switch of the electromagnetic proportional valve is set to realize the control of the working condition of the grinding head, the data feedback module is connected with the displacement sensor, the angle sensor and the gravity The sensors further realize mutual information transmission through electrical connection, wherein the piston rod and the grinding head are rigidly connected, and the movement trajectory of the piston rod is the active trajectory of the grinding head. The monitoring data is further used to obtain the position information and contact force information of the grinding head, and the data feedback module further derives the point cloud position of the real-time machining profile through the built-in deep neural network model according to the position information and contact force information of the grinding head. The data then generates real-time profile data and transmits it to the processing module;

The processing module is configured to compare the relationship between the path data generated from the real-time profile data and the design path data, and further import the profile data into the processing module, which is pre-programmed and set by a person skilled in the art for offline programming. The processing program generates the compensation motion trajectory of the displacement drive mechanism, and the processing module judges in real time whether the difference between the path data generated by the real-time profile data and the design path data is greater than the threshold, and if the difference is greater than the threshold, the The path data generated by the real-time profile data is imported into the processing program to further generate the motion trajectory of the displacement driving mechanism. The processing program generates the motion compensation signal of the displacement driving mechanism by comparing the pre-designed paths, and generates the motion compensation signal of the displacement driving mechanism by comparing the designed paths. The signal is output to each joint of the displacement drive mechanism, and the processing program is that those skilled in the art use the corresponding three-dimensional digital model to import the self-contained path planning unit of the processing module to further realize the precise modification of the modification module, and the data feedback Each processing step of the module can be realized in whole or in part by software, hardware and combinations thereof. The processing module can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the computer device in the form of software. In the memory of the processor, so that the processor can call and execute the corresponding operation of each unit;

The present invention avoids the nozzle blockage caused by the condensation of printing raw materials and affects the printing mechanism by precisely adjusting the temperature of the nozzles of the printing device, and further, after the printing device completes the printing work of each layer of printing layers, the corresponding printing layers are accurately detected and recorded. After grinding off the printing layer with unqualified accuracy, continue printing to realize high-precision control of the printing device, and improve the high smoothness and accuracy of the corresponding printing result printed by the printing device.

While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That said, the methods, systems and apparatus discussed above are examples. Various configurations may omit, substitute or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different from that described, and/or various components may be added, omitted, and/or combined. Furthermore, features described with respect to certain configurations may be combined in various other configurations, eg, different aspects and elements of the configurations may be combined in a similar manner. Furthermore, elements therein may be updated as technology develops, ie, many of the elements are examples and do not limit the scope of the disclosure or the claims.

Specific details are given in the description to provide a thorough understanding of example configurations, including implementations. However, configurations may be practiced without these specific details. For example, well-known circuits, procedures, algorithms, structures and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing descriptions of configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

In conclusion, it is intended that the above detailed description is to be considered as illustrative rather than restrictive, and it should be understood that these embodiments above should be understood to be merely illustrative of the present invention and not intended to limit the scope of protection of the present invention. After reading the contents of the description of the present invention, the skilled person can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims (3)

1. A high-precision smooth 3D printing device based on the Internet of Things and sensor monitoring, comprising a nozzle, a body, a computer provided with the standard parameter information of the target printing model and a fixed base for the printing model product, characterized in that the described The printing device further includes a temperature regulation module arranged in the nozzle to heat and melt the printing material in the nozzle, divide the to-be-printed model into predetermined printing layers, and further generate data analysis of the amount of printing material corresponding to each of the printing layers module, further calculation and analysis according to the information of the corresponding printing layer to obtain the control command for the corresponding precise temperature regulation control of the temperature regulation module, and the correspondence between the completed printing layer and the computer in the printing process. A comparison module for performing parameter comparison on the parameters of the printing layer to obtain the printing conditions of the completed printing layer, a modification module for modifying the completed printing layer which is further judged by the comparison module to be unqualified in accuracy, and a modification module for controlling the various components in the printing device. The control device for the specific work of the electrical components; The temperature adjustment module includes an infrared thermal phaser arranged inside the body to monitor the temperature of the nozzle in a non-contact manner; An annular duct, an air inlet of the annular duct connected to the top of the body, an air outlet of the annular duct connected to the top of the body, a cold air generating device connected to the air inlet, and an air outlet evenly laid on the a heater on the nozzle and for heating and melting the printing material; The data analysis module includes a division unit that divides the target printing model into a predetermined number of printing layers based on the standard parameter information, performs statistical calculation of data on each of the printing layers, and further obtains the required information corresponding to the printing layers. A counting unit for the quantity of printing materials, a matching unit for matching the printing layers and their corresponding quantities of printing materials, and a storage unit for storing the data information processed by the counting unit and the matching unit; The instruction module includes a data receiving unit that divides the nozzles into a predetermined number of temperature regions and obtains the temperature of each temperature region according to the infrared thermal phaser, and generates a corresponding printing layer according to the data analysis module. The command generation unit that generates the control command for the working intensity of the heater and the cold air generating device corresponding to the temperature zone and the control terminals respectively arranged on the heater and the cold air generating device receive the control command according to the number of printing raw materials. And further the receiving unit that the heater and the cold air device carry out corresponding drive control; Each of the temperature zones is provided with at least one of the heaters to heat the printing material in the corresponding temperature zone; A camera installed at the top of the machine body to acquire image data of the printing layer of the printing device, and performing analysis and processing according to the image data to further acquire the picture information of the most recently completed printing layer in the image data. An information extraction module, a processing module that performs edge processing on the picture information and obtains corresponding two-dimensional coordinate information on the edge of the picture information, and further analyzes and processes the picture information to obtain the area information of the completed printing layer a calculation unit and a result unit for comparing and analyzing the two-dimensional coordinate information and area information with the storage unit of the data analysis module to obtain the accuracy of the printing layer; The computing unit includes the processing method steps: S1: performing marginalization processing on the picture information of the completed printing layer to obtain k unit images Sk with closed edge lines corresponding to the completed printing layer; S2: Respectively obtain the number of pixels in each of the unit image areas, wherein the number of pixels corresponding to the i-th unit image of one of the completed printing layers is Zi, S3: Further calculations:

,in

is the size of the corresponding plane area of the corresponding printing layer in the parameter information of the target printing model,

is the size of the area corresponding to the unit pixel of the unit image; S4: Extract the plan view corresponding to the printing layer in the parameter information, that is, a preset image, and overlap the preset image with the unit image of the corresponding unit layer, and further acquire the difference between the preset image and the edge image. The number of pixels Y in the overlapping area; S5: further obtain the relative overlap ratio OR of the picture information of the completed printing layer and the corresponding preset image:

, where R is the overlap rate correction coefficient of the preset image corresponding to the same print layer and the unit image, b is the priority-related parameter of the overlap rate correction coefficient, and SS is the The area size of the preset image. 2 . The high-precision and smooth 3D printing device according to claim 1 , wherein the modification module comprises: being disposed on the body and polishing the predetermined printing layer that has been printed and further corresponding to the result unit. 3 . A modification mechanism for eliminating the finished printed layer with unqualified accuracy, a displacement drive mechanism for driving the modification mechanism to lift and lower to the target, and a displacement drive mechanism for the finished printed layer to move and polish, set above the modification mechanism to further modify the modification The auxiliary mechanism for timely suction and recovery of the broken particles generated during the operation of the mechanism and the cooling device uniformly laid on the inner wall of the machine body to cool and solidify the completed printing layer. 3. A computer-readable storage medium, characterized in that, the computer-readable storage medium includes a control method program of a 3D printing device, and when the 3D printing device is executed, realizes as in one of claims 1-2. The calculation processing and control steps of the high-precision smooth 3D printing device.

Images