CN114290647A - Automatic feeding prompt system of extruder - Google Patents
Automatic feeding prompt system of extruder Download PDFInfo
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- CN114290647A CN114290647A CN202111347476.9A CN202111347476A CN114290647A CN 114290647 A CN114290647 A CN 114290647A CN 202111347476 A CN202111347476 A CN 202111347476A CN 114290647 A CN114290647 A CN 114290647A
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- 239000000463 material Substances 0.000 claims abstract description 93
- 238000012545 processing Methods 0.000 claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 11
- 239000003550 marker Substances 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 7
- 238000007781 pre-processing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000003031 feeding effect Effects 0.000 abstract description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention discloses an automatic feeding prompt system of an extruder, belonging to the technical field of extruder production and comprising a feeding module, a conveying module, a processing module, a monitoring module, a regulating module and a prompt module; the processing module comprises a heating unit, a pressurizing unit and a cooling unit, wherein the heating unit is used for heating the interior of the charging barrel so that the material is in a viscous state when passing through the charging barrel; the heating unit is used for pressurizing the material in the viscous state, so that the material in the viscous state passes through a neck mold with a preset shape to obtain a continuum with the same cross section as the neck mold; the cooling unit cools and shapes the continuous body to obtain a glass-state workpiece; the automatic feeding device is used for solving the technical problem that the automatic feeding effect of the extruder is poor because the automatic dynamic regulation and control feeding is not adaptive according to the monitoring result of the machined part in the existing scheme.
Description
Technical Field
The invention relates to the technical field of extruder production, in particular to an automatic feeding prompt system of an extruder.
Background
When the extruder works, conveyed plastic materials enter the extruder from the hopper and are conveyed forward under the driving of the rotation of the screw rod, and the materials are heated by the charging barrel, sheared by the screw rod and compressed to be melted in the forward movement process, so that the tri-state change of glass state, high elastic state and viscous state is realized; and during pressurization, the material in the viscous state passes through a die with a certain shape, becomes a continuous body with a cross section similar to that of the die according to the die, and is cooled and shaped to form a glass state, so that a workpiece required by processing is obtained.
When the existing extruder is used for automatic feeding, the machined parts manufactured by processing are not monitored and fed back, and the material is added according to a feedback result to be subjected to self-adaptive dynamic adjustment, so that the automatic feeding effect is poor.
Disclosure of Invention
The invention aims to provide an automatic feeding prompt system of an extruder, which solves the following technical problems: how to solve does not have the dynamic regulation and control reinforced according to the result self-adaptation of machined part monitoring among the current scheme for the not good technical problem of extruder automatic material conveying's effect.
The purpose of the invention can be realized by the following technical scheme:
an automatic feeding prompt system of an extruder comprises a feeding module, a conveying module, a processing module, a monitoring module, a regulating module and a prompt module;
the feeding module comprises a hopper, a stirrer, a meter and a cut-off device, the stirrer is used for stirring materials, the meter is used for counting the fed materials to obtain feeding information of the materials, and the cut-off device is used for adjusting and cutting off the supply of the materials; the charging information comprises charging speed, material volume and material density;
the conveying module comprises a screw rod, and the screw rod rotates to drive the material to be conveyed forwards in the material barrel;
the processing module comprises a heating unit, a pressurizing unit and a cooling unit, wherein the heating unit is used for heating the interior of the charging barrel so that the material is in a viscous state when passing through the charging barrel; the heating unit is used for pressurizing the material in the viscous state, so that the material in the viscous state passes through a neck mold with a preset shape to obtain a continuum with the same cross section as the neck mold; the cooling unit cools and shapes the continuous body to obtain a glass-state workpiece;
the monitoring unit is used for acquiring an image of a workpiece and preprocessing the image to obtain a processed image; the image preprocessing comprises image cutting, image denoising and image identification;
acquiring an information set of a processed image, matching the information set with a standard pixel set of a standard workpiece in a database to obtain a processing matching set, and judging whether the processing of the extruder meets the production requirement or not according to the processing matching set;
the regulation and control module dynamically regulates the feeding of the materials according to the processing matching set; the prompt module prompts the feeding of the materials according to the processing matching set.
Preferably, the specific step of acquiring the information set of the processed image includes:
equally dividing the processed image according to a plurality of preset equal parts to obtain a plurality of divided images, and numbering the divided images from top to bottom and from left to right in sequence to obtain an image marker set;
acquiring pixel sums of a plurality of divided images in an image marker set, and accumulating the pixel sums of the plurality of divided images to obtain a pixel sum; and arranging and combining the pixel sum, the pixel sum and the image mark set in sequence to obtain an information set of the processed image.
Preferably, the specific step of matching the information set with the standard pixel set of the standard workpiece in the database includes:
acquiring a difference value between the pixel sum and a standard pixel set, matching the difference value with a preset fluctuation range, and judging that the workpiece meets the production requirement if the difference value belongs to the fluctuation range; if the difference does not belong to the fluctuation range, judging that the workpiece does not meet the production requirement, setting the difference as a difference to be detected, and generating a detection instruction; and further screening and positioning a plurality of divided images in the image marker set according to the detection instruction.
Preferably, the specific steps of screening and positioning comprise:
acquiring pixel sums of a plurality of divided images, setting the pixel sums as first pixel sums, setting the pixel sums of regions corresponding to the positions of the divided images in a standard pixel set as second pixel sums, acquiring a difference value CZ between the first pixel sums and the second pixel sums, and if the difference value CZ belongs to [ -k, k ], judging that the regions of the processed parts corresponding to the divided images are normal; if the difference CZ does not belong to [ -k, k ], judging that the region of the divided image corresponding to the machined part is abnormal, generating a positioning instruction, marking the divided image as a selected image, setting the region corresponding to the machined part as the selected region, and further performing qualitative determination on the selected image according to the positioning instruction; wherein k is a positive integer.
Preferably, the specific step of further characterizing the selected image comprises:
matching the difference value CZ with-k and k respectively according to a positioning instruction, if CZ is larger than k, judging that the material density of the selected image is high, marking the selected image as a first image, and generating a first matching signal; if CZ < -k, judging that the material density of the selected image is low, marking the selected image as a second image, and generating a second matching signal; counting the total number of the first images, acquiring a ratio between the total number of the first images and the total number of the divided images, and setting the ratio as a first ratio; counting the total number of the second images, acquiring a ratio of the total number of the second images to the total number of the divided images, and setting the ratio as a second ratio; and arranging and combining the first matching signal and the second matching signal as well as the first ratio and the second ratio in sequence to obtain a processing matching set.
Preferably, the specific steps of dynamically adjusting the material addition according to the processing matching set include:
analyzing the processing matching set, judging that the feeding amount of the materials is large if the processing matching set only contains a first matching signal, and reducing the amount of the materials conveyed into the hopper through a meter and a cut-off device; if the processing matching set only contains the second matching signal, judging that the feeding amount of the materials is small, and increasing the amount of the materials conveyed into the hopper through a meter and a cut-off device; if the processing matching set simultaneously comprises a first matching signal and a second matching signal, judging that the conveyed material is not uniformly stirred, and automatically adjusting the running speed of the stirrer; the adjustment is ended until the difference CZ between the first and second pixel sums belongs to-k, k.
Preferably, the feeding and increasing amount is prompted according to a single first matching signal in the processing matching set; prompting feeding decrement according to a single second matching signal in the processing matching set; and performing stirring adjustment prompting according to the first matching signal and the second matching signal which exist in the processing matching set at the same time.
The invention has the beneficial effects that:
according to the invention, the pixel sum of the whole workpiece is obtained, and the pixel sum is matched with the standard pixel set of the workpiece, so that whether the workpiece meets the production standard or not is judged from the whole level, and if the workpiece does not meet the production standard, a plurality of divided images are further monitored and analyzed, thereby finding the feeding requirement in time and improving the feeding efficiency;
according to the invention, the specific reasons for producing the machined part are further analyzed from the local aspect by analyzing and counting the pixels of a plurality of divided images of the machined part and the pixels corresponding to the standard pixel set, so that an adjustment basis can be provided for the subsequent material charging;
according to the invention, the processing matching set is analyzed, and the feeding of the material in the hopper is dynamically adjusted through the meter and the cut-off device according to the existence condition of the first matching signal and the second matching signal; meanwhile, the monitoring and analysis of the stirring of the materials can be realized, the running speed of the stirrer can be adjusted in time until qualified machined parts are produced by automatic feeding of the extruder, and the automatic feeding accuracy of the extruder is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of an automatic feeding prompt system of an extruder according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention is an automatic feeding prompt system for an extruder, including a feeding module, a conveying module, a processing module, a monitoring module, a regulating module and a prompt module;
in this embodiment, carry out the analysis through the finished product image to the machined part and match, judge whether the finished product of machined part meets the requirements, can judge whether reinforced the production standard that accords with of material through the finished product image of machined part to and whether the stirring of reinforced back material is abundant, the finished product image of machined part provides the basis for the automatic material conveying of material, compare in current scheme based on the stock of material in the hopper add subtract the material, more accurate automatic material conveying can be realized to this application, extruder automatic material conveying's effect has been improved.
The feeding module comprises a hopper, a stirrer, a meter and a cutting device, wherein the hopper is used for storing and conveying materials, the materials are stirred by the stirrer, the fed materials are counted by the meter to obtain feeding information of the materials, and the feeding information comprises a feeding speed, a material volume and a material density; adjusting and cutting off the supply of the material by a cutting device; wherein, the feeding speed, the material volume and the material density can provide basis for the feeding amount of subsequent materials; the cutting device is of an existing conventional structure;
the conveying module comprises a screw rod, and the screw rod rotates to drive the material to be conveyed forwards in the material barrel;
the processing module comprises a heating unit, a pressurizing unit and a cooling unit, wherein the heating unit is used for heating the interior of the charging barrel so that the material is in a viscous state when passing through the charging barrel; the heating unit is used for pressurizing the material in the viscous state, so that the material in the viscous state passes through a neck mold with a preset shape to obtain a continuum with the same cross section as the neck mold; the cooling unit cools and shapes the continuous body to obtain a glass-state workpiece;
the monitoring unit is used for acquiring an image of a workpiece and preprocessing the image to obtain a processed image; the image preprocessing comprises image cutting, image denoising and image identification;
acquiring an information set of a processed image, comprising: equally dividing the processed image according to a plurality of preset equal parts to obtain a plurality of divided images, and numbering the divided images from top to bottom and from left to right in sequence to obtain an image marker set; the shape of the divided image is the same as that of the workpiece, the preset plurality of equal parts can be nine equal parts, and the shape of the workpiece to be machined in the embodiment can be a rectangle to equally divide the workpiece into nine equal parts of the same rectangle;
acquiring pixel sums of a plurality of divided images in an image marker set, and accumulating the pixel sums of the plurality of divided images to obtain a pixel sum; arranging and combining the pixel sum, the pixel sum and the image mark set in sequence to obtain an information set of a processed image, matching the information set with a standard pixel set of a standard workpiece in a database to obtain a processing matching set, and judging whether the processing of the extruder meets the production requirement according to the processing matching set;
in the embodiment, the pixels of the plurality of images and the whole pixel sum are obtained through the existing image recognition algorithm, the pixel sum is matched with the standard pixel set of the workpiece, whether the workpiece meets the production standard or not is judged from the whole layer, if the workpiece does not meet the production standard, the plurality of equally divided images are continuously analyzed and matched in sequence, the specific reason that the workpiece does not meet the production standard is judged, and therefore an adjusting basis is provided for feeding of subsequent materials.
The specific steps of matching the information set with a standard pixel set of a standard workpiece in a database include:
acquiring a difference value between the pixel sum and a standard pixel set, matching the difference value with a preset fluctuation range, and judging that the workpiece meets the production requirement if the difference value belongs to the fluctuation range;
if the difference does not belong to the fluctuation range, judging that the workpiece does not meet the production requirement, setting the difference as a difference to be detected, and generating a detection instruction; the detection instruction is used for sequentially analyzing the parts of the machined parts which do not meet the production requirements and judging the specific condition of material feeding;
further screening and positioning a plurality of divided images in the image marker set according to the detection instruction; the method comprises the following steps:
acquiring pixel sums of a plurality of divided images, setting the pixel sums as first pixel sums, setting the pixel sums of a region corresponding to the positions of the divided images in a standard pixel set as second pixel sums, acquiring a difference value CZ between the first pixel sums and the second pixel sums, and if the difference value CZ belongs to [ -k, k ], and the value of k is a positive integer, judging that the region of the workpiece corresponding to the divided images is normal;
if the difference CZ does not belong to [ -k, k ], judging that the region of the machined part corresponding to the divided image is abnormal, generating a positioning instruction, marking the divided image as a selected image, and setting the region corresponding to the machined part as the selected region;
in the embodiment, [ -k, k ] represents the allowable fluctuation range of the corresponding pixels of the standard workpiece, the difference value between the total pixel of the produced workpiece and the pixel set of the standard workpiece is in the range, the produced workpiece meets the production standard, and the specific value of k is set according to the pixels of the standard workpiece; when the produced workpiece does not meet the production standard, a specific reason needs to be further determined to provide support for subsequent material charging.
Further qualifying the selected image according to the positioning instruction, comprising:
matching the difference value CZ with-k and k respectively according to a positioning instruction, if CZ is larger than k, judging that the material density of the selected image is high, marking the selected image as a first image, and generating a first matching signal;
if CZ < -k, judging that the material density of the selected image is low, marking the selected image as a second image, and generating a second matching signal;
counting the total number of the first images, acquiring a ratio between the total number of the first images and the total number of the divided images, and setting the ratio as a first ratio;
counting the total number of the second images, acquiring a ratio of the total number of the second images to the total number of the divided images, and setting the ratio as a second ratio;
the first ratio and the second ratio are used for judging the degree of the machined part not meeting the production standard, and the larger the first ratio is, the more the excessive conveyed materials are; the larger the second ratio is, the less the material conveyed by the low-level conveyor is;
arranging and combining the first matching signal and the second matching signal as well as the first ratio and the second ratio in sequence to obtain a processing matching set;
the regulation and control module dynamically regulates the feeding of the materials according to the processing matching set; the method comprises the following specific steps:
analyzing the processing matching set, judging that the feeding amount of the materials is large if the processing matching set only contains a first matching signal, and reducing the amount of the materials conveyed into the hopper through a meter and a cut-off device; if the processing matching set only contains the second matching signal, judging that the feeding amount of the materials is small, and increasing the amount of the materials conveyed into the hopper through a meter and a cut-off device; if the processing matching set simultaneously comprises a first matching signal and a second matching signal, judging that the conveyed material is not uniformly stirred, and automatically adjusting the running speed of the stirrer; the adjustment is ended until the difference CZ between the first and second pixel sums belongs to-k, k.
The prompting module prompts the feeding of the materials according to the processing matching set and prompts the feeding and increasing amount according to a single first matching signal in the processing matching set; prompting feeding decrement according to a single second matching signal in the processing matching set; and performing stirring adjustment prompting according to the first matching signal and the second matching signal which exist in the processing matching set at the same time.
The working principle of the invention is as follows: the material is stirred by the stirrer, the fed material is counted by the meter to obtain the feeding information of the material, and the supply of the material is adjusted and cut off by the cut-off device; the charging information comprises charging speed, material volume and material density;
the screw rod rotates to drive the material to be conveyed forwards in the material barrel;
heating the interior of the charging barrel to ensure that the material is in a viscous state when passing through the charging barrel; pressurizing the material in the viscous state to enable the material in the viscous state to pass through a neck mold with a preset shape, so as to obtain a continuum with the same cross section as the neck mold; cooling and shaping the continuous body to obtain a glass-state machined part;
acquiring an image of a workpiece, and performing image cutting, image denoising and image identification processing to obtain a processed image;
acquiring an information set of a processed image, matching the information set with a standard pixel set of a standard workpiece in a database to obtain a detection instruction, further screening and positioning a plurality of divided images in an image mark set according to the detection instruction to obtain a positioning instruction and a selected image, further qualifying the selected image according to the positioning instruction to obtain a processing matching set containing a first matching signal and a second matching signal, and judging whether the workpiece produced by an extruder meets the production requirements according to the processing matching set;
dynamically adjusting the material feeding according to the processing matching set; and prompting the feeding of the materials according to the processing matching set.
The formulas in the invention are all a formula which is obtained by removing dimensions and taking numerical value calculation, and software simulation is carried out by collecting a large amount of data to obtain the formula closest to the real condition, and the preset proportionality coefficient and the threshold value in the formula are set by the technical personnel in the field according to the actual condition or are obtained by simulating a large amount of data.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. An automatic feeding prompt system of an extruder comprises a feeding module, a processing module, a monitoring module and a regulating module, and is characterized in that the processing module is used for heating the interior of a charging barrel, so that materials are in a viscous state when passing through the charging barrel; pressurizing the material in the viscous state to enable the material in the viscous state to pass through a neck mold with a preset shape, so as to obtain a continuum with the same cross section as the neck mold; cooling and shaping the continuous body to obtain a glass-state machined part;
the monitoring unit is used for acquiring an image of a workpiece and preprocessing the image to obtain a processed image; acquiring an information set of a processed image, matching the information set with a standard pixel set of a standard workpiece in a database to obtain a detection instruction, further screening and positioning a plurality of divided images in an image mark set according to the detection instruction to obtain a positioning instruction and a selected image, and further qualifying the selected image according to the positioning instruction to obtain a processing matching set containing a first matching signal and a second matching signal;
the regulating and controlling module dynamically regulates the feeding of the materials according to a first matching signal and a second matching signal in the processing matching set, and reduces the amount of the materials conveyed to the hopper through the meter and the cut-off device if the processing matching set only contains the first matching signal; if the processing matching set only contains the second matching signal, the quantity of the material conveyed into the hopper is increased by the metering device and the cut-off device.
2. The automatic feeding prompt system of the extruder as claimed in claim 1, wherein the feeding module stirs the materials by a stirrer, counts the fed materials by a meter, and adjusts and cuts off the supply of the materials by a cutting device.
3. The system of claim 2, wherein the step of obtaining the information set of the processed image comprises: equally dividing and numbering the processed images according to a plurality of preset equal parts to obtain an image marker set; acquiring pixel sums of a plurality of divided images in an image marker set, and accumulating the pixel sums of the plurality of divided images to obtain a pixel sum; and arranging and combining the pixel sum, the pixel sum and the image mark set in sequence to obtain an information set of the processed image.
4. The extruder autofeed alert system of claim 3 wherein the specific step of matching the information set to a standard set of pixels of a standard work piece in the database comprises: acquiring a difference value between the pixel sum and a standard pixel set, matching the difference value with a preset fluctuation range, judging that the workpiece does not meet the production requirement if the difference value does not belong to the fluctuation range, setting the difference value as a difference value to be detected, and generating a detection instruction; and further screening and positioning a plurality of divided images in the image marker set according to the detection instruction.
5. The automatic feeding prompt system of the extruder as claimed in claim 4, wherein the specific steps of screening and positioning comprise: acquiring pixel sums of a plurality of divided images, setting the pixel sums as first pixel sums, setting the pixel sums of regions corresponding to the positions of the divided images in a standard pixel set as second pixel sums, acquiring a difference value CZ between the first pixel sums and the second pixel sums, judging that the regions of the processed parts corresponding to the divided images are abnormal if the difference value CZ does not belong to [ -k, k ], generating a positioning instruction, marking the divided images as selected images, and further qualifying the selected images according to the positioning instruction; wherein k is a positive integer.
6. The system of claim 5, wherein the specific step of further characterizing the selected image comprises: matching the difference value CZ with-k and k respectively according to a positioning instruction, if CZ is larger than k, judging that the material density of the selected image is high, marking the selected image as a first image, and generating a first matching signal; if CZ < -k, judging that the material density of the selected image is low, marking the selected image as a second image, and generating a second matching signal; and arranging and combining the first matching signal and the second matching signal as well as the first ratio and the second ratio in sequence to obtain a processing matching set.
7. The extruder autofeed alert system of claim 6 wherein the operating speed of the mixer is adjusted if the process match set includes both the first match signal and the second match signal.
8. The extruder autofeed reminder system of claim 1, wherein the pre-processing of the image includes image cropping, image denoising, and image recognition.
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