Powder molding method, system and terminal

Abstract

The present invention relates to a powder molding method, system and terminal, and to the field of powder molding technology, which includes loading powder into a preset pressing device according to a preset step-by-step powder loading method, and obtaining the pressing parameters of the pressed product; predicting the pressure distribution parameters when pressing the pressed product according to the pressing parameters, and obtaining the molding pressure parameters at various locations during the pressing; calculating the difference between the molding pressure parameters and the pressure distribution parameters in the corresponding direction, and defining it as the imbalance difference; when the imbalance difference exceeds the preset imbalance threshold, determining the elastic deformation amount from a preset elastic deformation database according to the imbalance difference; determining the return distance from a preset return database according to the elastic deformation; and controlling the preset pressing device and the pressed product to move up synchronously according to the return distance. The present application has the effect of improving the stability of powder molding and reducing the situation of unbalanced force on the powder.

Description

Technical Field

[0001] The present invention relates to the field of powder forming technology, and in particular to a powder forming method, system and terminal. Background Art

[0002] Powder forming machine refers to a device that presses powdered materials into products with a certain shape and density through a specific process.

[0003] In the prior art, a powder forming machine generally includes an upper punch and a lower punch. Powder is first injected into a mold, and then the upper punch and the lower punch are used to simultaneously press the powder into the mold so that the powder in the mold is aggregated to form the desired parts.

[0004] When the pressing speed of the powder molding machine is too fast, it is easy to cause the powder to be subjected to unbalanced force in the mold, resulting in cracks or delamination in the thinner wall parts of the parts. Summary of the invention

[0005] In order to improve the stability of powder molding and reduce the imbalance of force on the powder, the present invention provides a powder molding method, system and terminal.

[0006] In a first aspect, the present invention provides a powder forming method, which adopts the following technical solution:

[0007] A powder molding method, comprising:

[0008] The powder is loaded into a preset pressing device according to a preset step-by-step powder loading method, and the pressing parameters of the pressed product are obtained;

[0009] Predict the pressure distribution parameters when pressing the pressed product according to the pressing parameters, and obtain the molding pressure parameters at various locations during pressing;

[0010] Calculate the difference between the molding pressure parameter and the pressure distribution parameter in the corresponding direction and define it as the imbalance difference;

[0011] When the imbalance difference exceeds a preset imbalance threshold, determining the elastic deformation amount from a preset elastic deformation database according to the imbalance difference;

[0012] Determine the return distance from a preset return database according to the elastic deformation amount;

[0013] The preset pressing device and the pressed product are controlled to move upward synchronously according to the return distance.

[0014] By adopting the above technical scheme, the pressure on various parts of the pressed product when pressing the powder is estimated according to the shape structure of the pressed product, and the estimated pressure distribution parameters are compared with the actually obtained molding pressure parameters to determine whether pressure imbalance occurs. Then, when the pressure of the pressed product is unbalanced, the pressing device and the pressed product are controlled to move upward synchronously to release the elastic deformation of the pressing device, thereby improving the stability of powder molding.

[0015] Optionally, a step-by-step powder filling method is also included, and the step-by-step powder filling method includes:

[0016] Determining the suppression of fruiting bodies according to the suppression parameters;

[0017] Read entity injection height based on suppressed subentities;

[0018] Determine the maximum height and the minimum height according to the entity injection height, and calculate the difference between the maximum height and the minimum height, and define it as the maximum injection difference;

[0019] Calculate the quotient of the maximum injection difference and the preset unit height, round the quotient and define it as the demarcation series;

[0020] Determine the injection boundary line according to the boundary level and the maximum injection difference;

[0021] Determine the injection priority according to the entity injection height, and read the injection position based on the injection priority;

[0022] When the solid injection height is lower than the injection boundary line, the preset feeding device is controlled to inject powder into the injection position according to the injection priority;

[0023] When the entity injection height is not lower than the injection boundary line, the preset vibration device is controlled to vibrate the preset pressing device, and the preset feeding device is controlled to inject powder into the injection position according to the injection priority.

[0024] By adopting the above technical scheme, the pressed product is divided into multiple sub-bodies according to the shape of the pressed product, so that the priority of injecting powder into the sub-bodies is given according to the height of the upper end of the sub-bodies, so that the powder is gradually injected starting from the lowest sub-body in order of priority, thereby improving the uniformity of powder distribution in the pressed product and reducing the imbalance of powder force.

[0025] Optionally, the step-by-step powder filling method further comprises:

[0026] acquiring a powder image of the accumulated powder;

[0027] Judging whether there are foreign matter features in the powder based on the powder image;

[0028] When there are foreign matter features in the powder, the cleaning stroke is determined based on the powder image;

[0029] Control the preset cleaning device to absorb foreign matter according to the cleaning stroke, and determine whether there are low-quality features based on the powder image;

[0030] When low-quality features are present in the powder, the recovery trip is determined based on the powder image;

[0031] According to the recycling stroke, the preset cleaning device is controlled to absorb the low-quality powder and store it in the preset recycling device.

[0032] By adopting the above technical solution, the appearance of the stored powder is detected, and the quality of the powder is judged by the powder image. When foreign matter exists in the powder, the foreign matter is removed by a cleaning device. Then, it is judged by the powder image whether the powder is aged or other conditions have caused the quality of the powder to deteriorate. The low-quality powder is collected from the stored powder by a cleaning device to reduce the situation where the poor quality of the powder causes uneven force when the powder is pressed.

[0033] Optionally, a powder recovery method is also included, and the powder recovery method includes:

[0034] Acquire a recovery image of the powder in the recovery device;

[0035] Judging whether there is attachment on the powder based on the recovered image;

[0036] When there are attachments on the powder, the attachment ratio is identified based on the recovered image;

[0037] Determine the grinding speed from a preset grinding database according to the attachment ratio, and obtain the powder humidity of the powder in the recovery device;

[0038] When the powder moisture exceeds a preset processing threshold, the heating temperature is determined according to the powder moisture;

[0039] Controlling a preset recovery device to heat the powder according to the heating temperature, and controlling the preset recovery device to stir the powder according to the grinding speed;

[0040] When the moisture content of the powder is lower than a preset processing threshold, a preset recovery device is controlled to stir the powder according to the grinding speed.

[0041] By adopting the above technical solution, when foreign matter such as rust and stains are attached to the powder, the powder is stirred at high speed through the recovery device, so that the powder particles collide with each other during high-speed stirring to remove the attachments on the powder particles, thereby improving the quality of the powder.

[0042] Optionally, a powder protection method is also included, and the powder protection method includes:

[0043] When the powder humidity exceeds a preset processing threshold, the ambient humidity is obtained;

[0044] When the ambient humidity is lower than the powder humidity, the drying temperature is determined according to the powder humidity, and a deposition image of the powder deposition location is obtained;

[0045] Determine whether there is a high humidity feature based on the stacked image;

[0046] When there are high humidity features, the high humidity position is determined based on the accumulation image;

[0047] A high humidity warning is issued by a preset warning device according to the high humidity position control;

[0048] When the ambient humidity is not lower than the powder humidity, the drying temperature is determined according to the ambient humidity;

[0049] Based on the determined drying temperature, a preset heating device is controlled according to the drying temperature to heat the accumulated powder.

[0050] By adopting the above technical solution, when the powder humidity is high, the reason for the high powder humidity is determined by comparing the ambient humidity and the powder humidity, and the powder is heated by a heating device to reduce the powder humidity, thereby reducing the situation where the powder quality is reduced when the powder humidity is too high.

[0051] Optionally, the powder protection method further comprises:

[0052] When there is a high humidity feature, judging whether the high humidity feature is a ventilation feature based on the high humidity feature;

[0053] When the high humidity feature is a ventilation feature, determining the closed position based on the ventilation feature;

[0054] Match the closing number according to the closing position;

[0055] Control the preset electric switch to close the ventilation feature according to the closing number.

[0056] By adopting the above technical solution, when there is a vent in the powder storage area, the powder is easily affected by the outside world and the humidity is too high. At this time, the vent is closed by the electric control switch to reduce the influence of the powder on the outside world and improve the quality of the powder.

[0057] Optionally, a powder screening method is also included, and the powder screening method includes:

[0058] The volume of the entity is identified based on the suppressed fruiting body;

[0059] Determine the diameter range of particles required for pressing based on the volume of the entity;

[0060] Determine the mass range of particles required for pressing based on the diameter range;

[0061] Determine the blowing wind force according to the mass range and the preset opening distance;

[0062] Determine the powder receiving position according to the blowing wind force and mass range;

[0063] The preset feeding device is controlled to move according to the powder receiving position, and the preset screening device is controlled to eject the powder into the preset feeding device according to the blowing wind force.

[0064] By adopting the above technical solution, a suitable powder particle size is selected according to the size of the fruiting body, and the suitable powder particles are screened out from the powder pile by the screening device according to the winnowing method, thereby improving the uniformity of powder distribution in the fruiting body and reducing the imbalance of powder force.

[0065] Optionally, the method for determining the blowing wind force includes:

[0066] (CAρhV^2) / (mg)-(CAρhV^2) / (Mg)=d;

[0067] Where C is the wind coefficient;

[0068] A is the projected area of ​​the powder on the plane perpendicular to the wind direction;

[0069] ρ is the air density;

[0070] h is the height difference between the spray outlet of the screening device and the powder inlet of the feeding device;

[0071] V is the required blowing wind force;

[0072] m is the minimum value of the mass interval;

[0073] M is the maximum value of the mass interval;

[0074] g is the acceleration due to gravity;

[0075] d is the opening distance of the feeding device.

[0076] In a second aspect, the present application provides a powder forming system, which adopts the following technical solution:

[0077] A powder forming system, comprising:

[0078] An acquisition module, used to acquire pressing parameters, molding pressure parameters, powder images, recovery images, powder humidity, environmental humidity and stacking images;

[0079] A memory for storing a program of any of the above powder forming methods;

[0080] The program in the processor memory can be loaded and executed by the processor to implement any of the above-mentioned powder forming methods.

[0081] In a third aspect, the present application provides a smart terminal, which adopts the following technical solution:

[0082] An intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any one of the above-mentioned powder forming methods.

[0083] By adopting the above technical scheme, the pressure on various parts of the pressed product when pressing the powder is estimated according to the shape structure of the pressed product, and the estimated pressure distribution parameters are compared with the actually obtained molding pressure parameters to determine whether pressure imbalance occurs. Then, when the pressure of the pressed product is unbalanced, the pressing device and the pressed product are controlled to move upward synchronously to release the elastic deformation of the pressing device, thereby improving the stability of powder molding.

[0084] In summary, the present application includes at least one of the following beneficial technical effects:

[0085] 1. Estimate the pressure on various parts of the pressed product when pressing the powder according to the shape and structure of the pressed product, and compare the estimated pressure distribution parameters with the actual molding pressure parameters to determine whether pressure imbalance occurs. Then, when the pressure of the pressed product is unbalanced, control the pressing device and the pressed product to move up synchronously to release the elastic deformation of the pressing device and improve the stability of powder molding;

[0086] 2. Divide the pressed product into multiple sub-bodies according to its shape, and give priority to the sub-bodies for powder injection according to the height of the top of the sub-bodies, so that the powder is gradually injected from the lowest sub-bodies in order of priority, thereby improving the uniformity of powder distribution in the pressed product and reducing the imbalance of powder force;

[0087] 3. Select the appropriate powder particle size according to the size of the fruiting body, and screen the appropriate powder particles from the powder pile by the screening device according to the winnowing method, thereby improving the uniformity of powder distribution in the fruiting body and reducing the imbalance of powder force. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 It is a schematic diagram of the structure of a powder forming machine;

[0089] Figure 2 is a cross-sectional view of a powder forming machine;

[0090] Figure 3 is a flow chart of a powder forming method;

[0091] Figure 4 It is the process of step-by-step powder filling method Figure 1 ;

[0092] Figure 5 It is the process of step-by-step powder filling method Figure 2 ;

[0093] Figure 6 is a flow chart of the powder recovery method;

[0094] Figure 7 The process of powder protection method Figure 1 ;

[0095] Figure 8 The process of powder protection method Figure 2 ;

[0096] Fig. 9 is a flow chart of the powder screening method.

[0097] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. bracket; 2. driving device; 3. feeding device; 4. pressing device; 41. upper punch; 42. upper second punch; 43. middle die; 44. lower punch; 45. lower second punch; 46. core rod; 5. pushing device; 6. pressed product. DETAILED DESCRIPTION

[0098] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0099] An embodiment of the present invention discloses a powder molding method, which is used to detect the pressure during powder molding in real time, so as to judge the pressure distribution of the powder material during molding, and when pressure imbalance occurs, return compensation is performed through a pressing device to release the elastic deformation of the pressing device, thereby reducing the pressure imbalance during powder molding.

[0100] Reference Figure 1 and Figure 2A powder forming machine includes a bracket 1, a driving device 2, a feeding device 3, a pressing device 4 and a pushing device 5. The bracket 1 refers to a device for installing and protecting various components of the powder forming machine. The driving device 2 is screwed to the bracket 1 and is used to drive the pressing device 4. The driving device 2 generally adopts a motor. The feeding device 3 is fixed to the bracket 1 and is used to inject powder materials into the pressing device 4. The pressing device 4 is arranged in the bracket 1 and is used to press the powder materials to press the powder materials into shape. The pressing device 4 generally includes an upper punch 41, an upper second punch 42, and a middle die 4 3. A lower punch 44, a lower second punch 45 and a core rod 46, wherein the upper punch 41, the upper second punch 42, the lower punch 44 and the lower second punch 45 are all used to press against the powder material, the middle die 43 is used to limit the outer diameter of the pressed product 6, and the core rod 46 is used to limit the inner hole size of the pressed product 6. The pressed product 6 is a finished part formed by the upper punch 41, the upper second punch 42, the lower punch 44 and the lower second punch 45 pressing against the powder material between the middle die 43 and the core rod 46. The pushing device 5 is arranged on the pressing device 4 and is used to push the pressed product 6 out of the pressing device 4.

[0101] Reference Figure 3 , a powder molding method, comprising:

[0102] Step 100: Powder is loaded into a preset pressing device according to a preset step-by-step powder loading method, and pressing parameters of the pressed product are obtained.

[0103] The step-by-step powder filling method refers to a method for loading powder material into the pressing device 4. The pressing parameters refer to the three-dimensional data of the pressed product 6. The pressing parameters can be obtained through a scanner. The method for obtaining the pressing parameters is selected by the staff according to actual conditions and will not be elaborated here.

[0104] Step 101: predicting the pressure distribution parameters when pressing the pressed product according to the pressing parameters, and obtaining the molding pressure parameters at various locations during pressing.

[0105] The pressing device 4 is the above-mentioned device used to press the powder material to press the powder material into shape. The pressure distribution parameter refers to the set of pressure parameters in various directions of the middle mold 43 of the pressing device 4 predicted according to the structure of the pressed product 6 reflected in the pressing parameters. The pressure distribution parameter can be obtained through a pressure distribution matching model. The pressure distribution matching model refers to a neural network model obtained by pre-training with pressed products 6 of different shapes and corresponding pressure parameters as samples.

[0106] The molding pressure parameters refer to the actual pressure parameters in various directions inside the middle mold 43 of the pressing device 4. The molding pressure parameters can be obtained through a pressure sensor. The method for obtaining the molding pressure parameters is selected by the staff according to the actual situation and will not be elaborated here.

[0107] Step 102: Calculate the difference between the molding pressure parameter and the pressure distribution parameter in the corresponding direction, and define it as the imbalance difference.

[0108] The imbalance difference is the difference between the values ​​of the molding pressure parameter and the pressure distribution parameter in the corresponding direction. The pressure condition during pressing is judged by the imbalance difference.

[0109] Step 103: When the imbalance difference exceeds a preset imbalance threshold, the elastic deformation amount is determined from a preset elastic deformation database according to the imbalance difference.

[0110] The imbalance threshold refers to the minimum value of the pressure difference that is likely to affect the quality of the pressed product 6 during powder molding. The imbalance threshold is selected by the staff according to the actual situation and will not be described here. The imbalance difference exceeding the imbalance threshold indicates that there is a pressure imbalance. At this time, the part with lower structural strength on the pressed product 6 is prone to cracks or delamination, resulting in a decrease in the quality of the pressed product 6 or even scrapping. The elastic deformation refers to the deformation length generated by the pressing device 4 when the pressure is unbalanced. The elastic deformation can be obtained by querying the elastic deformation database, which refers to a database that records the elastic deformation corresponding to different pressure differences obtained in advance.

[0111] Step 104: Determine the return distance from a preset return database according to the elastic deformation amount.

[0112] The return distance refers to the distance the pressing device 4 needs to move to release the elastic deformation of the pressing device 4. The return distance can be obtained by querying the return database, which refers to a database that records the return distances corresponding to different elastic deformation amounts obtained in prior experiments.

[0113] Step 105: Control the preset pressing device and the pressed product to move upward synchronously according to the return distance.

[0114] After completing the pressing action, the upper punch 41, the upper second punch 42, the lower punch 44 and the lower second punch 45 in the pressing device 4 will undergo elastic deformation, resulting in an internal expansion demand for the pressed product 6. At this time, the upper punch 41, the upper second punch 42 and the middle die 43 in the pressing device 4 are controlled to move up synchronously so that the pressed product 6 moves up synchronously, thereby ensuring that there is no relative movement between the pressed product 6 and the middle die 43, and releasing the elastic deformation of the upper punch 41, the upper second punch 42, the lower punch 44 and the lower second punch 45, thereby reducing the pressure imbalance.

[0115] Reference Figure 4 , the step-by-step powder filling method includes:

[0116] Step 200: Determine the pressed fruiting body according to the pressing parameters.

[0117] The pressed fruiting bodies refer to a plurality of regular structures obtained by decomposing the irregular pressed product 6 structure in the pressing parameters. The pressed fruiting bodies can be obtained through a three-dimensional decomposition model, and the three-dimensional decomposition model refers to a neural network model obtained in advance through sample training.

[0118] Step 201: Reading the entity injection height based on the pressed sub-entity.

[0119] The entity injection height refers to the height value of the top of the suppressed sub-entity. The entity injection height can be read from the suppression parameters. The method for reading the entity injection height is selected by the staff according to the actual situation and will not be elaborated here.

[0120] Step 202: Determine the maximum height and the minimum height according to the entity injection height, and calculate the difference between the maximum height and the minimum height, and define it as the maximum injection difference.

[0121] The maximum injection difference refers to the maximum difference among the entity injection heights of all suppressed sub-entities, that is, the difference between the largest entity injection height and the smallest entity injection height among all entity injection heights. The maximum injection difference is used to show the height difference of the suppressed sub-entities.

[0122] Step 203: Calculate the quotient of the maximum injection difference and the preset unit height, round the quotient and define it as the demarcation level.

[0123] Unit height refers to the maximum height value of powder with good fluidity. The unit height is selected by the staff according to the actual situation and will not be elaborated here. The injection dividing line refers to the height value used to distinguish the powder filling steps. The dividing level is the number of injection dividing lines. Generally, the quotient of the maximum injection difference and the unit height is calculated first. When the quotient has a decimal part, the decimal part is removed and the integer part is rounded up to get the dividing level.

[0124] Step 204: Determine the injection boundary line according to the boundary level and the maximum injection difference;

[0125] The injection demarcation lines are evenly distributed on the maximum injection difference. If the maximum injection difference is B and the demarcation level is n, then the injection demarcation lines are B / N, 2*B / N, 3*B / N...(N-1)*B / N.

[0126] Step 205: Determine the injection priority according to the entity injection height, and read the injection position based on the injection priority.

[0127] Injection priority refers to a manually set value used to show the order of powder injection of each suppressed sub-entity. The higher the injection priority, the earlier the powder is injected. The lower the entity injection height, the higher the injection priority. The method for determining the injection priority is selected by the staff based on actual conditions and will not be elaborated here.

[0128] The feeding device 3 is the above-mentioned device for injecting powder material into the pressing device 4. The injection position refers to the position where the powder material is injected into the pressed fruiting body by the feeding device 3. The injection position can be read from the pressing parameters. The reading method of the injection position is selected by the staff according to the actual situation and will not be described here.

[0129] Step 206: When the solid injection height is lower than the injection boundary line, the preset feeding device is controlled according to the injection priority to inject powder into the injection position.

[0130] The entity injection height is lower than the injection boundary line, which means that the pressed fruiting bodies being injected with powder are still in the same step. At this time, the pressed fruiting bodies in the same step are injected with powder material in sequence according to the injection priority through the feeding device 3.

[0131] Step 207: When the entity injection height is not lower than the injection boundary line, the preset vibration device is controlled to vibrate the preset pressing device, and the preset feeding device is controlled to inject powder into the injection position according to the injection priority.

[0132] The vibration device refers to a device used to vibrate the pressing device 4 to evenly distribute the powder in the pressing device 4. The vibration device is selected by the staff according to the actual situation and will not be described in detail here. The entity injection height is not lower than the injection boundary line, which means that the pressed fruiting body being injected with powder is located in the next step. At this time, the pressing device 4 is first vibrated by the vibration device to evenly distribute the powder material in the pressed fruiting body that has been injected with powder in the previous step, and then the feeding device 3 is controlled to inject the powder material into the pressed fruiting body located in the next step in sequence according to the injection priority.

[0133] Powder is injected step by step according to the height of the pressed fruiting body, and the powder material in the pressed fruiting body after each step of powder injection is kept to have good fluidity, so that the powder material in the pressed fruiting body after the same step of powder injection is vibrated by a vibration device, thereby improving the uniformity of powder distribution.

[0134] Reference Figure 5 The step-by-step powder filling method further comprises:

[0135] Step 208: Acquire a powder image of the accumulated powder.

[0136] The powder image refers to the image of the stored powder material that has not been blown out by the screening device. The powder image can be obtained through a camera. The method for obtaining the powder image is selected by the staff according to the actual situation and will not be elaborated here.

[0137] Step 209: Determine whether there are foreign matter features based on the powder image.

[0138] Foreign body features refer to objects such as plastics and paper that are not powder materials. Image recognition technology can be used to determine whether there are foreign body features in the powder image. Image recognition technology is an important field of artificial intelligence. It involves the computer's understanding and analysis of images. The main task of image recognition technology is to convert pixel information in the image into meaningful information, thereby achieving understanding and recognition of the image. Image recognition technology can be used to read the color difference of pixels in the powder image to determine whether the object in the pixel is powder or a foreign body feature.

[0139] Step 210: When foreign matter features exist in the powder image, a cleaning stroke is determined according to the powder image.

[0140] The cleaning device refers to a device used to absorb foreign matter from the accumulated powder material. The cleaning device can be a suction fan. The cleaning device is selected by the staff according to the actual situation and will not be described in detail here. The presence of foreign matter features in the powder image indicates that foreign matter is mixed in the stored powder material and needs to be removed. The cleaning stroke is the path for the cleaning device to absorb the foreign matter one by one. The cleaning stroke can first identify the foreign matter position of the foreign matter through image recognition technology, and then the control program of the cleaning device is automatically generated according to the foreign matter position. The generation method of the cleaning stroke is common knowledge known to people in this field and will not be described in detail here.

[0141] Step 211: Control a preset cleaning device to absorb foreign matter according to the cleaning stroke, and determine whether there are low-quality features based on the powder image.

[0142] Low-quality features refer to contaminated material particles caused by external influences such as oxidation and stains on powder materials. Image recognition technology can be used to determine whether there are low-quality features in the powder image. Image recognition technology can be used to read the color difference of pixels in the powder image to determine whether the object in the pixel is powder or a low-quality feature.

[0143] Step 212: When low-quality features exist in the powder, a recovery stroke is determined based on the powder image.

[0144] The presence of low-quality features in the powder image represents that low-quality powder is mixed in the stored powder material, and the low-quality powder needs to be removed. The recovery stroke is the path for the cleaning device to absorb the low-quality powder material particles one by one. The recovery stroke can first identify the low-quality position of the low-quality powder through image recognition technology, and then the control program of the cleaning device is automatically generated according to the low-quality position. The generation method of the recovery stroke is common knowledge known to people in this field and will not be elaborated here.

[0145] Step 213: Control the preset cleaning device according to the recycling stroke to absorb the low-quality powder and store it in the preset recycling device.

[0146] The recovery device refers to a device that removes pollutants from the contaminated material by heating and stirring to reuse the contaminated powder material. The recovery device is selected by the staff according to actual conditions and will not be described in detail here.

[0147] First, the foreign matter in the accumulated powder material is removed by a cleaning device, and then the contaminated powder material is absorbed by the cleaning device to the recovery device to reduce the content of foreign matter and contaminated materials in the accumulated powder material, thereby improving the quality of the accumulated powder material, and then improving the stability of the use of the powder material, and reducing the situation where the powder force is unbalanced when pressing low-quality powder due to the reduction in the quality of the powder material.

[0148] Reference Figure 6 , powder recovery methods include:

[0149] Step 300: Acquire a recovery image of the powder in the recovery device.

[0150] The recovery image refers to a picture of the powder in the recovery device. The recovery image can be obtained through a camera. The method for obtaining the recovery image is selected by the staff according to the actual situation and will not be elaborated here.

[0151] Step 301: Determine whether there is any attachment on the powder according to the recovered image.

[0152] Adhesions refer to objects such as stains and rust that contaminate powder particles due to external influences. Image recognition technology can be used to determine whether there are attachments in the powder image. Image recognition technology can be used to read the color difference of pixels in the powder image to determine whether there are attachments on the powder in the pixel.

[0153] Step 302: When there are attachments on the powder, the attachment ratio is identified based on the recovered image.

[0154] The presence of attachments on the powder means that the powder in the recycling device is contaminated due to external influences. The attachment ratio refers to the proportion of the powder material with attachments to the total material in the recycling device. Generally, the quotient of the area of ​​the powder with attachments in the recycling image and the total area of ​​the powder material is taken as the attachment ratio. The attachment ratio can be obtained by image recognition technology. The color difference of pixels in the powder image can be read by image recognition technology to identify the area of ​​the powder with attachments in the recycling image and the total area of ​​the powder material.

[0155] Step 303: Determine the grinding speed from a preset grinding database according to the adhesion ratio, and obtain the powder humidity of the powder in the recovery device.

[0156] The grinding speed refers to the rotation speed of the powder in the recovery device when the recovery device stirs the powder. The higher the attachment ratio, the higher the grinding speed is used. The grinding speed can be obtained by querying the grinding database. The grinding database refers to a database that records the most efficient grinding speed for removing attachments on powders with different attachment ratios obtained in advance experiments.

[0157] Powder humidity refers to the humidity value of the powder material in the recovery device. The powder humidity can be obtained through a humidity sensor. The method for obtaining the powder humidity is selected by the staff according to the actual situation and will not be elaborated here.

[0158] Step 304: When the powder humidity exceeds a preset processing threshold, a heating temperature is determined according to the powder humidity.

[0159] The processing threshold refers to the lowest humidity value that can easily lead to a decrease in powder quality. The processing threshold is selected by the staff based on actual conditions and will not be elaborated here. If the powder humidity exceeds the processing threshold, it means that the humidity of the powder material is too high, which can easily lead to further contamination of the powder material.

[0160] Step 305: controlling a preset recovery device to heat the powder according to the heating temperature, and controlling a preset recovery device to stir the powder according to the grinding speed.

[0161] When the humidity of the powder material is too high, the powder particles are heated and stirred by the recovery device, so that when the powder particles are heated and softened by the recovery device, the material particles collide with each other through stirring, thereby removing the attachments on the outer layer of the powder particles.

[0162] Step 306: When the moisture content of the powder is lower than a preset processing threshold, a preset recovery device is controlled to stir the powder according to the grinding speed.

[0163] The powder material is stirred to make the material particles collide with each other, thereby removing the attachments, and the attachments are smaller and lighter after falling from the powder particles, and are easy to fall into the bottom of the recovery device. The bottom inner wall of the recovery device can be set to a cone, so that the attachments that fall off the surface of the powder material are accumulated at the bottom of the recovery device, and then the material particles on the upper layer of the recovery device are directly transported back to the accumulation place of the powder flow after the recovery device is processed.

[0164] Reference Figure 7 , powder protection methods include:

[0165] Step 400: When the powder humidity exceeds a preset processing threshold, obtain the ambient humidity.

[0166] Ambient humidity refers to the humidity value of the space where the powder material is stored. The powder material is generally stored in a special storage room. The ambient humidity is the humidity of the storage room. The ambient humidity can be obtained through a humidity sensor. The method of obtaining the ambient humidity is selected by the staff according to the actual situation and will not be elaborated here.

[0167] Step 401: When the ambient humidity is lower than the powder humidity, the drying temperature is determined according to the powder humidity, and a deposition image of the powder deposition location is obtained.

[0168] The heating device refers to the equipment used to dry the accumulated powder. The heating device is selected by the staff according to the actual situation and will not be described here. The situation where the ambient humidity is lower than the powder humidity means that the powder humidity is too high, not because the ambient humidity is too high. At this time, it is necessary to further determine the reason why the powder humidity is too high.

[0169] The drying temperature refers to the temperature at which the powder material is dried by a heating device. The drying temperature can be obtained by querying a drying database. The drying database refers to a database that records the most efficient drying temperatures for drying powder particles of various moisture contents obtained by prior experiments.

[0170] The accumulation image refers to a picture of the surrounding environment where the powder is accumulated. The accumulation image can be obtained through a camera. The method for obtaining the accumulation image is selected by the staff according to the actual situation and will not be elaborated here.

[0171] Step 402: Determine whether there is a high humidity feature based on the accumulation image.

[0172] High humidity features refer to features such as water accumulation and ventilation that easily lead to increased humidity. Ventilation features refer to features such as windows and vents that interact with external airflow. Image recognition technology can be used to determine whether there are high humidity features in the accumulated image. Image recognition technology can be used to read the color difference of pixels in the accumulated image to determine whether the object in the pixel is a high humidity feature.

[0173] Step 403: When a high humidity feature exists, determine the high humidity position according to the accumulation image.

[0174] The existence of a high-humidity feature indicates that the powder humidity is too high, which is the high-humidity feature. The high-humidity position refers to the location of the high-humidity feature. The high-humidity position can be obtained by using image recognition technology. The length of the high-humidity feature in the stacked image can be identified by image recognition technology, and the distance between the camera and the high-humidity feature can be estimated by combining the angle between the line connecting the camera and the high-humidity feature and the horizontal direction and the field of view angle of the camera to obtain the high-humidity position.

[0175] Step 404: Control a preset warning device to issue a high humidity warning according to the high humidity position.

[0176] A warning device refers to a device used to notify staff of the presence of high humidity characteristics. The warning device is selected by the staff based on actual conditions and will not be elaborated here. The high humidity warning is a set of information that the warning device uses to notify staff of the high humidity location. The high humidity warning is set by the staff based on actual conditions and will not be elaborated here.

[0177] Step 405: When the ambient humidity is not lower than the powder humidity, the drying temperature is determined according to the ambient humidity.

[0178] The situation that the ambient humidity is not lower than the powder humidity means that the powder humidity is too high, that is, the ambient humidity is too high. At this time, the powder needs to be continuously heated to reduce the situation that the powder humidity is too high.

[0179] Step 406: Based on the determined drying temperature, a preset heating device is controlled according to the drying temperature to heat the accumulated powder.

[0180] The powder material is dried by a heating device according to the reason that the humidity of the powder material is too high. When the ambient humidity is lower than the humidity of the powder, the powder material is heated by the heating device, and the heating device is turned off when the humidity of the powder is normal. The time for the heating device to heat the powder material is selected by the staff according to the actual situation and will not be elaborated here. When the ambient humidity is not lower than the humidity of the powder, the powder material is continuously heated by the heating device, thereby improving the dryness of the powder, improving the quality of the powder, and preventing the powder from being oxidized due to excessive humidity.

[0181] Reference Figure 8 , the powder protection method also includes:

[0182] Step 407: When the high humidity feature exists, determine whether the high humidity feature is a ventilation feature based on the high humidity feature.

[0183] Image recognition technology can be used to determine whether the high humidity feature in the accumulation image is a ventilation feature, and image recognition technology can be used to read the color difference of pixels in the accumulation image to determine whether the high humidity feature in the pixel is a ventilation feature.

[0184] Step 408: When the high humidity feature is a ventilation feature, determine the closed position based on the ventilation feature.

[0185] The high humidity feature is a ventilation feature, which means that the powder humidity is too high due to the influence of external airflow. The closed position refers to the position of the ventilation feature. The closed position can be obtained by image recognition technology. The length of the ventilation feature in the stacking image can be identified by image recognition technology, and the distance between the camera and the ventilation feature can be estimated by combining the angle between the line connecting the camera and the ventilation feature and the horizontal direction and the field of view angle of the camera to obtain the closed position.

[0186] Step 409: Match the closing number according to the closing position.

[0187] The electric control switch refers to the switch used to control the opening and closing of the ventilation feature. Each ventilation feature has a corresponding electric control switch. The electric control switch is selected by the staff according to the actual situation, and will not be described in detail here. The closing number refers to the number set manually to distinguish the electric control switch. The closing number can be obtained from the switch database. The switch database refers to a database that records the numbers of the electric control switches and the positions of the ventilation features they control.

[0188] Step 410: Control a preset electric control switch to close the ventilation feature according to the closing number.

[0189] When the ventilation feature exists, the ventilation feature is closed in time by the electric control switch, so as to reduce the further increase of the humidity of the powder material. When the electric control switch cannot close the ventilation feature, the ventilation feature can be physically intervened by the drone and the staff can be notified by the warning device so that the staff can deal with the ventilation feature in time.

[0190] Powder protection methods also include:

[0191] Step 411: When a high humidity feature exists, determine whether the high humidity feature is a water accumulation feature based on the high humidity feature.

[0192] Image recognition technology can be used to determine whether a high-humidity feature in an accumulation image is a water accumulation feature. Image recognition technology can be used to read the color difference of pixels in the accumulation image to determine whether a high-humidity feature in a pixel is a water accumulation feature.

[0193] Step 412: When the high humidity feature is a water accumulation feature, determine the water accumulation location based on the water accumulation feature.

[0194] The high humidity feature is the water accumulation feature, which means that the reason why the humidity of the powder is too high is that there is water accumulation around the powder. The water accumulation position refers to the position of the water accumulation feature. The water accumulation position can be obtained by using image recognition technology. The length of the water accumulation feature can be identified by image recognition technology, and the distance between the camera and the water accumulation feature can be estimated by combining the angle between the line connecting the camera and the ventilation feature and the horizontal direction and the field of view angle of the camera, thereby obtaining the water accumulation position.

[0195] Step 413: Determine the water accumulation path according to the water accumulation position.

[0196] A drone refers to a device used to absorb accumulated water. A drone is generally equipped with a suction fan for absorbing accumulated water. The drone is selected by the staff according to the actual situation, which will not be described in detail here. The accumulated water path refers to the route taken by the drone to reach the accumulated water location. The accumulated water path can be automatically generated by the control program of the drone according to the accumulated water location. The method of generating the accumulated water path is common knowledge among people in this field, which will not be described in detail here.

[0197] Step 414: Control the preset UAV to reach the water accumulation location according to the water accumulation path, and determine the absorption time based on the water accumulation characteristics.

[0198] The water absorption device refers to a device mounted on a drone for absorbing accumulated water. Generally, a mechanical arm with absorbent cotton is used. The water absorption device is selected by the staff according to the actual situation and will not be described in detail here. The absorption time refers to the time required for the water absorption device to absorb the accumulated water. The absorption time can be determined by querying the absorption time database. The absorption time database refers to a database that records the absorption time corresponding to the water accumulation characteristics of different sizes obtained through experiments in advance.

[0199] Step 416: Control the preset water absorption device to absorb the accumulated water according to the absorption time.

[0200] When there is water accumulation in the environment where the powder material is located, it is easy for the powder material to be affected by the water accumulation and cause the humidity to increase. The water absorption device absorbs the accumulated water, thereby reducing the situation where the moisture of the powder increases due to the accumulated water.

[0201] Reference Fig. 9 , powder screening methods include:

[0202] Step 500: Identify the volume of the entity based on the suppressed sub-entities.

[0203] The entity volume refers to the volume value of the pressed fruiting body. The entity volume can be read from the pressing parameters. The method for reading the entity volume is selected by the staff according to the actual situation and will not be elaborated here.

[0204] Step 501: Determine the diameter range of particles required for pressing according to the volume of the entity.

[0205] The diameter range refers to the range of optimal powder material particle diameters that constitute the pressed fruiting body. When the powder particle diameter is too large, it is easy to lead to a low filling rate of the powder material for the pressed fruiting body. When the powder particle diameter is too small, it is easy to lead to low fluidity of the powder material when filling the pressed fruiting body. The diameter range can be obtained from a particle diameter database. The particle diameter database refers to a database that records the diameter ranges corresponding to pressed fruiting bodies of different volumes obtained in advance through experiments.

[0206] Step 502: Determine the mass range of particles required for pressing according to the diameter range.

[0207] The mass interval refers to the mass range of powder material particles within the diameter interval. The mass interval can be calculated based on the value of the diameter interval and the density of the powder particles, where the density of the powder particles is measured in advance by the staff.

[0208] Step 503: Determine the blowing wind force according to the mass range and the preset opening distance.

[0209] The screening device refers to a device that uses wind force to sort out powder material particles of different masses and blows the powder material particles into the feeding device 3. The screening device is selected by the staff according to the actual situation and will not be described in detail here. The blowing wind force refers to the wind speed of the airflow blown by the screening device to the powder material. The method for determining the blowing wind force includes: (CAρhV^2) / (mg)-(CAρhV^2) / (Mg)=d; where C is the wind force coefficient, A is the projected area of ​​the powder on the plane perpendicular to the wind direction, ρ is the air density, and h is the height difference between the spray outlet of the screening device and the powder inlet of the feeding device 3. C, A, ρ and h are all measured in advance by the staff; V is the required blowing wind force; m is the minimum value of the mass interval; M is the maximum value of the mass interval; g is the acceleration of gravity, d is the opening distance of the feeding device 3, that is, the maximum length value of the powder inlet of the feeding device 3 in the blowing direction of the screening device, and g and d are selected by the staff according to the actual situation.

[0210] Step 504: Determine the powder receiving position according to the blowing wind force and the mass range.

[0211] The powder receiving position refers to the position where the feeding device 3 receives the powder material ejected by the screening device. The method for determining the powder receiving position refers to the method for determining the blowing wind force mentioned above, which will not be described in detail here.

[0212] Step 505: controlling the preset feeding device to move according to the powder receiving position, and controlling the preset screening device to eject the powder into the preset feeding device according to the blowing wind force.

[0213] The wind speed of the screening device is adjusted so that the powder materials falling into the diameter range can just fall into the opening of the feeding device 3, and the position of the feeding device 3 is adjusted so that the feeding device 3 can accurately receive the powder materials falling into the diameter range. A feeding pipe and a hopper can be added to the feeding device 3, and the feeding device 3 can be moved by adjusting the position of the hopper. A guide rail for the movement of the feeding device 3 can also be pre-set on the powder forming machine. The moving method of the feeding device 3 is selected by the staff according to actual conditions and will not be elaborated here.

[0214] Based on the same inventive concept, an embodiment of the present invention provides a powder forming system, including:

[0215] An acquisition module, used to acquire pressing parameters, molding pressure parameters, powder images, recovery images, powder humidity, environmental humidity and stacking images;

[0216] A memory for storing a program of any of the above powder forming methods;

[0217] The program in the processor memory can be loaded and executed by the processor to implement any of the above-mentioned powder forming methods.

[0218] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute a powder forming method.

[0219] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0220] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A powder molding method, characterized in that: include: The powder is loaded into a preset pressing device according to a preset step-by-step powder loading method, and the pressing parameters of the pressed product are obtained; Predict the pressure distribution parameters when pressing the pressed product according to the pressing parameters, and obtain the molding pressure parameters at various locations during pressing; Calculate the difference between the molding pressure parameter and the pressure distribution parameter in the corresponding direction and define it as the imbalance difference; When the imbalance difference exceeds a preset imbalance threshold, determining the elastic deformation amount from a preset elastic deformation database according to the imbalance difference; Determine the return distance from a preset return database according to the elastic deformation amount; According to the return distance, the upper punch, the upper second punch, the middle die and the pressed product in the preset pressing device are controlled to move upward synchronously; The step-by-step powder filling method comprises: Determining a pressed fruiting body according to the pressing parameters, wherein the pressed fruiting body refers to a plurality of regular structures obtained by decomposing an irregular pressed product structure in the pressing parameters; Read entity injection height based on suppressed subentities; Determine the maximum height and the minimum height according to the entity injection height, and calculate the difference between the maximum height and the minimum height, and define it as the maximum injection difference; Calculate the quotient of the maximum injection difference and the preset unit height, round the quotient and define it as the demarcation series; Determine the injection boundary line according to the boundary level and the maximum injection difference; Determine the injection priority according to the entity injection height, and read the injection position based on the injection priority; When the solid injection height is lower than the injection boundary line, the preset feeding device is controlled to inject powder into the injection position according to the injection priority; When the entity injection height is not lower than the injection boundary line, the preset vibration device is controlled to vibrate the preset pressing device, and the preset feeding device is controlled to inject powder into the injection position according to the injection priority.

2. A powder molding method according to claim 1, characterized in that: The step-by-step powder filling method further comprises: acquiring a powder image of the accumulated powder; Judging whether there are foreign matter features in the powder based on the powder image; When there are foreign matter features in the powder, the cleaning stroke is determined based on the powder image; Control the preset cleaning device to absorb foreign matter according to the cleaning stroke, and determine whether there are low-quality features based on the powder image; When low-quality features are present in the powder, the recovery trip is determined based on the powder image; According to the recycling stroke, the preset cleaning device is controlled to absorb the low-quality powder and store it in the preset recycling device.

3. A powder molding method according to claim 2, characterized in that: Also included is a powder recovery method, the powder recovery method comprising: Acquire a recovery image of the powder in the recovery device; Judging whether there is attachment on the powder based on the recovered image; When there are attachments on the powder, the attachment ratio is identified based on the recovered image; Determine the grinding speed from a preset grinding database according to the attachment ratio, and obtain the powder humidity of the powder in the recovery device; When the powder moisture exceeds a preset processing threshold, the heating temperature is determined according to the powder moisture; Controlling a preset recovery device to heat the powder according to the heating temperature, and controlling the preset recovery device to stir the powder according to the grinding speed; When the moisture content of the powder is lower than a preset processing threshold, a preset recovery device is controlled to stir the powder according to the grinding speed.

4. A powder molding method according to claim 3, characterized in that: Also included is a powder protection method, the powder protection method comprising: When the powder humidity exceeds a preset processing threshold, the ambient humidity is obtained; When the ambient humidity is lower than the powder humidity, the drying temperature is determined according to the powder humidity, and a deposition image of the powder deposition location is obtained; Determine whether there is a high humidity feature based on the stacked image; When there are high humidity features, the high humidity position is determined based on the accumulation image; A high humidity warning is issued by a preset warning device according to the high humidity position control; When the ambient humidity is not lower than the powder humidity, the drying temperature is determined according to the ambient humidity; Based on the determined drying temperature, a preset heating device is controlled according to the drying temperature to heat the accumulated powder.

5. A powder molding method according to claim 4, characterized in that: The powder protection method further comprises: When there is a high humidity feature, judging whether the high humidity feature is a ventilation feature based on the high humidity feature; When the high humidity feature is a ventilation feature, determining the closed position based on the ventilation feature; Match the closing number according to the closing position; Control the preset electric switch to close the ventilation feature according to the closing number.

6. A powder molding method according to claim 1, characterized in that: Also included is a powder screening method, the powder screening method comprising: The volume of the entity is identified based on the suppressed fruiting body; Determine the diameter range of particles required for pressing based on the volume of the entity; Determine the mass range of particles required for pressing based on the diameter range; Determine the blowing wind force according to the mass range and the preset opening distance; Determine the powder receiving position according to the blowing wind force and mass range; The preset feeding device is controlled to move according to the powder receiving position, and the preset screening device is controlled to eject the powder into the preset feeding device according to the blowing wind force.

7. A powder molding method according to claim 6, characterized in that: The method for determining the blowing wind force comprises: (CAρhV^2) / (mg)-(CAρhV^2) / (Mg)=d; Where C is the wind coefficient; A is the projected area of ​​the powder on the plane perpendicular to the wind direction; ρ is the air density; h is the height difference between the spray outlet of the screening device and the powder inlet of the feeding device; V is the required blowing wind force; m is the minimum value of the mass interval; M is the maximum value of the mass interval; g is the acceleration due to gravity; d is the opening distance of the feeding device.

8. A powder forming system, characterized in that: include: An acquisition module, used to acquire pressing parameters, molding pressure parameters, powder images, recovery images, powder humidity, environmental humidity and stacking images; A memory for storing a program of a powder forming method according to any one of claims 1 to 7; The program in the memory can be loaded and executed by the processor.

9. An intelligent terminal, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes a powder forming method according to any one of claims 1 to 7.

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