CN117644624B - Injection molding control system for automobile exterior trim part - Google Patents
Injection molding control system for automobile exterior trim part Download PDFInfo
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 392
- 238000012360 testing method Methods 0.000 claims description 277
- 239000007924 injection Substances 0.000 claims description 199
- 238000002347 injection Methods 0.000 claims description 199
- 238000001816 cooling Methods 0.000 claims description 139
- 238000013441 quality evaluation Methods 0.000 claims description 67
- 238000004140 cleaning Methods 0.000 claims description 41
- 230000007547 defect Effects 0.000 claims description 37
- 238000011156 evaluation Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 26
- 238000013461 design Methods 0.000 claims description 25
- 238000012937 correction Methods 0.000 claims description 24
- 238000007689 inspection Methods 0.000 claims description 19
- 239000010410 layer Substances 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 17
- 239000012899 standard injection Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 238000011161 development Methods 0.000 claims description 7
- 238000002441 X-ray diffraction Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000010191 image analysis Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000011835 investigation Methods 0.000 claims 2
- 238000005457 optimization Methods 0.000 description 7
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- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
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- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 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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- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention belongs to the technical field of injection molding, and relates to an injection molding control system for an automobile exterior trim part.
Description
Technical Field
The invention belongs to the technical field of injection molding, and particularly relates to an injection molding control system for automobile exterior trimming parts.
Background
With the rapid development of technology and the increasing diversity of consumer demand, the automotive industry is experiencing an unprecedented revolution. Among them, the automobile bumper is an important part for representing the appearance quality and performance of the automobile, the innovation and progress of the manufacturing technology is of great interest, and a powerful technical support is provided for manufacturing the high-quality automobile bumper, and an injection molding control system for the automobile exterior trim is generated.
In order to ensure the stability and product quality of the production line, the prior art has avoided the defects of strong subjectivity and long time consumption of the traditional manual operation, and introduced an automatic and intelligent injection molding control system to improve the efficiency and accuracy of the mold testing stage, and the prior art meets the existing requirements, but has limitation expressions, specifically: 1. the problem of mutual disjoint exists in the injection molding parameter debugging and the injection molding test piece quality detection in the injection molding test stage of the existing automobile bumper, the injection molding test piece quality detection method usually focuses on the surface quality index, and the influence of deeper technological parameters on the product quality is ignored, so that shallow and wide quality detection results cannot provide powerful data support for injection molding parameter adjustment. In addition, the injection parameter debugging mode is generally multi-stage unified gear adjustment, and the pertinence, the accuracy and the dynamics of data debugging are lacked, so that the production requirements of high precision and high efficiency are difficult to meet.
2. The injection molding test stage of the existing automobile bumper lacks summarizing feedback capability to the whole process, is difficult to effectively evaluate the test mold debugging times and debugging amplitude of the single-type automobile bumper, cannot comprehensively know the operation stability of the whole injection molding test stage process, and therefore cannot realize the injection molding test process optimization of the automobile bumper, and is unfavorable for the injection molding production of the automobile bumper to a certain extent.
Disclosure of Invention
In order to overcome the defects in the background art, the embodiment of the invention provides an injection molding control system for an automobile exterior trim part, which can effectively solve the problems related to the background art.
The aim of the invention can be achieved by the following technical scheme: an automotive exterior trim injection molding control system comprising: and the injection molding test parameter input module is used for inputting preset injection molding test parameters into the injection molding machine.
And the injection molding test mold work development module is used for simulating and producing an injection molding test piece of the target automobile bumper according to preset injection molding test mold parameters, obtaining an injection molding test piece finished product of the target automobile bumper and marking the injection molding test piece finished product as a target injection molding test piece.
And the test mold finished product quality evaluation module is used for detecting the quality of the target injection molding test piece, judging whether the injection molding quality of the target injection molding test piece meets the standard, if so, executing the standard injection molding parameter feedback module, and otherwise, executing the injection molding test mold parameter adjustment module.
And the injection molding test parameter adjusting module is used for analyzing the adjustment requirements of all parameter objects in the preset injection molding test parameters and corresponding adjustment parameters, carrying out corresponding correction treatment on the preset injection molding test parameters, and repeating the operation until the injection molding quality of the target injection molding test piece reaches the standard.
And the standard injection molding parameter feedback module is used for feeding back the current injection molding test parameters as standard injection molding parameters when the injection molding quality of the target injection molding test piece reaches the standard.
And the injection molding test operation stability coefficient feedback module is used for recording correction parameters of injection molding test parameters in the process of simulating the injection test piece of the production target automobile bumper by the injection molding machine, evaluating the operation stability coefficient of the injection molding test work of the target automobile bumper and feeding back.
The cloud database is used for storing the volume of an injection molding cavity of the target automobile bumper, designing a three-dimensional structure model and injection molding standard inspection parameters, wherein the injection molding standard inspection parameters comprise a cleaning quality evaluation coefficient, a first-order injection quality evaluation coefficient, a second-order injection quality evaluation coefficient and a standard reaching threshold of a cooling quality evaluation coefficient, and storing a preset reasonable cooling shrinkage rate range and a preset reasonable cooling crystallinity range of an injection molding finished product of the target automobile bumper.
Preferably, the preset injection molding parameters include preset injection pressure of the cleaning device, preset injection pressure and injection speed of the injection device, and preset cooling temperature of the cooling device.
Preferably, the quality detection of the target injection molding test piece comprises: image acquisition and model construction are carried out on a target injection molding test piece by utilizing an automatic optical monitor of a quality inspection area of an injection molding machine, an image and a three-dimensional structure model of the target injection molding test piece are obtained, and the surface glossiness of the target injection molding test piece is obtained by utilizing an image analysis toolSurface impurity amount->And the cumulative area ratio ∈thereof>Thereby analyzing the cleaning quality evaluation coefficient +.>The calculation formula is as follows:wherein->For the surface of the injection molded test piece to be predetermined, reference is made to the impurity quantity, < >>Is a natural constant.
Respectively importing a three-dimensional structure model of a target injection molding test piece and a design three-dimensional structure model of a target automobile bumper stored in a cloud database into CAD software, drawing a line profile of the target injection molding test piece and a design line profile of the target automobile bumper by using a drawing tool of the CAD software, comparing the two in the same proportion, and further obtaining the injection molding form similarity of the target injection molding test piece 。
Carrying out repeated comparison on the three-dimensional structure model of the target injection molding test piece and the designed three-dimensional structure model of the target automobile bumper in CAD software to obtain the length ratio of the three-dimensional structure model of the target injection molding test piece to the designed three-dimensional structure model of the target automobile bumperRatio of width->Ratio of thickness->And the area ratio of the respective corresponding opening areas +.>Wherein->Numbering for each corresponding opening area +.>And is further defined by the formula->Obtaining the matching degree of the injection structure of the target injection molding test piece, wherein +.>Corresponding to the number of open areas.
From the formulaObtaining a first-order injection quality evaluation coefficient of the target injection molding test piece>。
Preferably, the quality detection of the target injection molding test piece further comprises: measuring a design three-dimensional structural model of the target automobile bumper based on a measuring tool in CAD software to obtain the design length of the target automobile bumperDesign Width->Design surface area->Design volume->。
Surface area of concave area of surface layer of target injection molding test piece by using appearance defect monitoring instrument of quality inspection area of injection molding machineArea of raised area->Length of each crack->Collecting, wherein->Numbering the cracks of the surface layer- >Calculating the surface defect evaluation coefficient of the target injection molding test piece>，/>。
Utilizing an X-ray detection instrument of a quality inspection area of an injection molding machine to carry out injection molding on each bubble volume of the inner layer of a test piece of a targetMaximum flow mark length->Maximum moire width->Collecting, wherein->Numbering each bubble in the inner layer +.>Calculating an inner layer defect evaluation coefficient of the target injection molding test piece +.>，/>。
From the formulaAnd obtaining a second-order injection quality evaluation coefficient of the target injection molding test piece.
Volume of three-dimensional structural model of target injection molding test piece based on measuring tool in CAD softwareAcquiring and storing the injection molding cavity volume of the target automobile bumper in the cloud database>By the formula->And obtaining the cooling shrinkage rate of the target injection molding test piece.
Performing diffraction experiment on the target injection molding test piece by using an X-ray diffraction instrument of a quality inspection area of the injection molding machine, obtaining diffraction pattern area and amorphous pattern area of a crystalline phase after diffraction of the target injection molding test piece, and taking the ratio between the two values as the cooling crystallinity of the target injection molding test piece。
Extracting a preset reasonable cooling shrinkage rate range and a preset reasonable cooling crystallinity range of the injection molding finished product of the target automobile bumper from a cloud database to obtain the reasonable cooling shrinkage rate of the injection molding finished product of the target automobile bumper And reasonable cooling crystallinity->Analysis of the Cooling quality evaluation coefficient of the target injection molded test piece +.>The calculation formula is as follows: />Wherein->The reasonable deviation thresholds of the cooling shrinkage rate and the cooling crystallinity of the preset injection molding test piece are respectively set.
Preferably, the determining whether the injection quality of the target injection molding test piece meets the standard includes: extracting a cleaning quality evaluation coefficient, namely a cleaning quality evaluation coefficient, from injection molding standard inspection parameters of a target automobile bumper stored in a cloud databaseThe standard threshold values of the first-order injection quality evaluation coefficient, the second-order injection quality evaluation coefficient and the cooling quality evaluation coefficient are respectively recorded asWhen meeting->And when the conditions are met, judging that the injection molding quality of the target injection molding test piece meets the standard, otherwise, judging that the injection molding quality of the target injection molding test piece does not meet the standard.
Preferably, the analyzing the adjustment requirement and the corresponding adjustment parameter of each parameter object in the preset injection molding test parameters includes: when (when)In this case, the injection pressure preset for the cleaning device in the preset injection molding parameters is determined +.>There is a need for adjustment and the adjustment direction of the preset injection pressure of the cleaning device is determined to be up-regulated by the formulaObtaining a corrected injection pressure of the cleaning device, wherein +.>Is->。
When (when) When the cooling device is in the preset injection molding test parameters, the preset cooling temperature of the cooling device is judged>There is an adjustment requirement to enable the cooling shrinkage of the target injection molding test piece to be equal to the upper limit value of the reasonable range of the preset cooling shrinkage of the target automobile bumper injection molding finished product +.>And lower limit value->Comparing the cooling crystallinity of the target injection molding test piece with the upper limit value of the reasonable cooling crystallinity range preset by the injection molding finished product of the target automobile bumper>And lower limit value->Comparing, using the decision model->And obtaining the adjustment direction of the preset cooling temperature of the target injection molding test piece cooling device.
When the preset adjustment direction of the cooling temperature of the cooling device is up-regulated, the formula is adoptedObtaining a corrected cooling temperature of the cooling device.
When the preset adjustment direction of the cooling temperature of the cooling device is downward adjustment, the method is represented by the formulaObtaining a corrected cooling temperature of the cooling device.
Preferably, the analyzing the adjustment requirement of each parameter object and the corresponding adjustment parameter in the preset injection molding test parameters further includes: when (when)When the injection pressure preset by the injection device in the preset injection molding test parameters is judged +.>There is an adjustment requirement to extract the length ratio +.f of the three-dimensional structural model of the target injection molding test piece to the designed three-dimensional structural model of the target automobile bumper >Ratio of width->Ratio of thickness->And the area ratio of the respective corresponding opening areas +.>When (when)When the preset injection pressure of the injection device is determined to be adjusted downwards, the adjustment direction of the preset injection pressure of the injection device is determined to be adjusted downwards according to the formulaObtaining a corrected injection pressure of the injection device when +.>When the adjustment direction of the injection pressure preset by the injection device is determined to be up-regulated, the injection pressure is determined to be up-regulated by the formula +.>A corrected injection pressure of the injection device is obtained.
When (when)In this case, the injection speed of the injection device preset in the preset injection test parameters is determined>There is a need for adjustment to extract the surface defect evaluation coefficient and the inner defect evaluation coefficient of the target injection molded test piece when +.>When the preset injection speed of the injection device is adjusted downwards, the adjustment direction of the preset injection speed of the injection device is determined to be adjusted downwards, and the adjustment direction is determined to be adjusted downwards according to the formula +.>Obtaining a corrected injection speed of the injection device when +.>When the preset injection speed of the injection device is adjusted upwards, the adjustment direction of the preset injection speed of the injection device is determined to be adjusted upwards, and the adjustment direction is defined by the formula +.>A corrected injection speed of the injection device is obtained.
Preferably, the correction parameters include each adjustment parameter object for each correction and its corresponding adjustment absolute amplitude.
Preferably, the evaluation of the operational stability coefficient of the injection molding test work of the target automobile bumper includes: extracting each corrected adjustment parameter object in correction parameters of injection molding test parameters in the process of simulating injection test piece production of target automobile bumper by using injection molding machine, and setting operation influence weights corresponding to each corrected adjustment parameter object Wherein->For each correction number +.>，/>For the number of the respective adjustment parameter object, +.>And combining the absolute amplitude of each adjustment parameter object of each correction>Calculating the running stability coefficient of the injection molding test work of the target automobile bumper,wherein->Single correction for injection test parameters of preset injection molding machineThe reference absolute amplitude of the single adjustment parameter object.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects: (1) According to the invention, the cleaning quality evaluation coefficient, the first-order injection quality evaluation coefficient, the second-order injection quality evaluation coefficient and the cooling quality evaluation coefficient of the target injection molding test piece are analyzed and respectively compared with the corresponding standard reaching threshold value, and the comparison result is used as the judgment basis for judging whether the injection molding quality of the target injection molding test piece meets the standard, so that the multidimensional quality evaluation of the finished product of the injection molding test piece of the target automobile bumper is realized, the evaluation result has clear sources and basis, and the later quality tracing and the problem solving are facilitated.
(2) According to the invention, the cleaning quality evaluation coefficient of the target injection molding test piece is reasonably analyzed according to the surface gloss and the impurity condition, and is used as the adjustment basis of the preset injection pressure of the cleaning device in the injection molding machine, so that the cleaning quality is effectively improved, the quality reduction of the finished product of the injection molding test piece caused by insufficient cleaning is avoided, and the cleaning quality evaluation is tightly combined with the cleaning device of the injection molding machine to realize high integration.
(3) According to the invention, through the similarity of the injection form and the matching degree of the injection structure of the target injection molding test piece, the first-order injection quality evaluation coefficient of the target injection molding test piece is comprehensively analyzed, the first-order injection quality evaluation coefficient is closely combined with the injection pressure preset by the injection device in the injection molding machine, the adjustment direction of the injection pressure preset by the injection device is reasonably evaluated according to the dimensional change condition of the target injection molding test piece, and accurate adjustment parameter calculation is performed, so that the defect of the finished product of the injection molding test piece caused by improper injection pressure is prevented, and data optimization and data support are provided for accurate standard injection molding parameter acquisition.
(4) According to the invention, the second-order injection quality evaluation coefficient of the target injection molding test piece is reasonably analyzed from the surface layer defect evaluation coefficient and the inner layer defect evaluation coefficient of the target injection molding test piece, and the adjustment direction of the injection speed preset by the injection device is effectively judged according to the comparison condition of the values of the surface layer defect evaluation coefficient and the inner layer defect evaluation coefficient, so that the corresponding adjustment parameters are obtained, the quality of the injection molding test piece is improved, and more accurate and efficient data guidance is provided for the injection molding optimization process.
(5) According to the invention, the cooling quality evaluation coefficient of the target injection molding test piece is reasonably analyzed according to the cooling shrinkage rate and the cooling crystallinity, an adjustment basis is provided for the preset cooling temperature of the cooling device in the injection molding machine, and scientific and accurate direction adjustment guidance is given by combining the comparison conditions of the cooling shrinkage rate and the cooling crystallinity with the reasonable ranges of the cooling shrinkage rate and the cooling crystallinity respectively, so that the cooling process of the injection molding test piece is optimized, the quality and the stability of the injection molding test piece are improved, and the defect rate is reduced.
(6) According to the invention, by recording the correction parameters of the injection molding test parameters in the process of simulating the injection test piece of the target automobile bumper by the injection molding machine, the operation stability coefficient of the injection molding test work of the target automobile bumper is evaluated and fed back, so that the operation stability of the whole injection molding test stage process is comprehensively known, the subsequent injection molding test process optimization of the automobile bumper is realized, and the injection molding production of the automobile bumper is facilitated to a certain extent.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a schematic diagram of the module connection of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides an injection molding control system for an automotive exterior trim part, comprising: the system comprises an injection molding test mold parameter input module, an injection molding test mold work development module, an injection molding finished product quality evaluation module, an injection molding test mold parameter adjustment module, a standard injection molding parameter feedback module, an injection molding test mold operation stability coefficient feedback module and a cloud database.
The injection molding test mold parameter input module is connected with the injection molding test mold work development module, the injection molding test mold work development module is connected with the injection molding finished product quality evaluation module, the injection molding finished product quality evaluation module is respectively connected with the injection molding test mold parameter adjustment module and the standard injection molding parameter feedback module, the injection molding test mold parameter adjustment module is respectively connected with the standard injection molding parameter feedback module and the injection molding test mold operation stability coefficient feedback module, and the cloud database is respectively connected with the injection molding finished product quality evaluation module and the injection molding test mold parameter adjustment module.
The injection molding test mold parameter input module is used for inputting preset injection molding test mold parameters into the injection molding machine.
Specifically, the preset injection molding test parameters comprise preset injection pressure of the cleaning device, preset injection pressure and injection speed of the injection device and preset cooling temperature of the cooling device.
And the injection molding test mold work development module is used for simulating and producing an injection molding test piece of the target automobile bumper according to the preset injection molding test mold parameters, obtaining an injection molding test piece finished product of the target automobile bumper and marking the injection molding test piece finished product as a target injection molding test piece.
And the test die finished product quality evaluation module is used for detecting the quality of the target injection molding test piece, judging whether the injection molding quality of the target injection molding test piece meets the standard, if so, executing the standard injection molding parameter feedback module, and otherwise, executing the injection molding test die parameter adjustment module.
Specifically, the quality detection of the target injection molding test piece comprises the following steps: image acquisition and model construction are carried out on a target injection molding test piece by utilizing an automatic optical monitor of a quality inspection area of an injection molding machine, an image and a three-dimensional structure model of the target injection molding test piece are obtained, and the surface glossiness of the target injection molding test piece is obtained by utilizing an image analysis toolSurface impurity amount->And the cumulative area ratio ∈thereof>Thereby analyzing the cleaning quality evaluation coefficient +.>The calculation formula is as follows:wherein->For the surface of the injection molded test piece to be predetermined, reference is made to the impurity quantity, < >>Is a natural constant.
It should be noted that, the above-mentioned preset impurity amount for the surface of the injection molding test piece is obtained by referring to the basic standard of quality management of the injection molding test piece in the automobile injection molding test industry, and the well-known automobile industry organization and enterprises also set related standards and specifications, for example, the IATF 16949 standard set by the International Business administration for automotive (IATF), which relates to quality management of injection molding parts, and provides a complete set of quality management specifications for injection molding parts for the automobile industry.
Respectively importing a three-dimensional structure model of a target injection molding test piece and a design three-dimensional structure model of a target automobile bumper stored in a cloud database into CAD software, drawing a line profile of the target injection molding test piece and a design line profile of the target automobile bumper by using a drawing tool of the CAD software, comparing the two in the same proportion, and further obtaining the injection molding form similarity of the target injection molding test piece。
It should be noted that, the injection molding form similarity of the target injection molding test piece is obtained by the following steps: the method comprises the steps of obtaining the line profile of a target injection molding test piece and the coincident line length of the design line profile of a target automobile bumper, which are compared under the condition of the same proportion and size, obtaining the coincident line length and the line length of the design line profile of the target automobile bumper by using a measuring tool of CAD software, and taking the ratio of the coincident line length to the line length of the design line profile of the target automobile bumper as the injection molding form similarity of the target injection molding test piece.
Carrying out repeated comparison on the three-dimensional structure model of the target injection molding test piece and the designed three-dimensional structure model of the target automobile bumper in CAD software to obtain the length ratio of the three-dimensional structure model of the target injection molding test piece to the designed three-dimensional structure model of the target automobile bumper Ratio of width->Ratio of thickness->And the area ratio of the respective corresponding opening areas +.>Wherein->Numbering for each corresponding opening area +.>And is further defined by the formula->Obtaining the matching degree of the injection structure of the target injection molding test piece, wherein +.>Corresponding to the number of open areas.
The method for obtaining the three-dimensional structure model of the target injection molding test piece and the corresponding opening areas of the designed three-dimensional structure model of the target automobile bumper comprises the following steps: executing INTERFERE commands by using CAD software to identify each opening area in the three-dimensional structure model of the target injection molding test piece and each opening area in the designed three-dimensional structure model of the target automobile bumper, acquiring the central position coordinates of each opening area in the three-dimensional structure model of the target injection molding test piece and the central position coordinates of each opening area in the designed three-dimensional structure model of the target automobile bumper, performing Euclidean distance formula calculation on the central position coordinates of a certain opening area in the three-dimensional structure model of the target injection molding test piece and the central position coordinates of each opening area in the designed three-dimensional structure model of the target automobile bumper, and taking the opening area with the shortest distance in the designed three-dimensional structure model of the target automobile bumper as the corresponding opening area of the opening area in the three-dimensional structure model of the target injection molding test piece, thereby obtaining the three-dimensional structure model of the target injection molding test piece and each corresponding opening area of the designed three-dimensional structure model of the target automobile bumper.
From the formulaObtaining a first-order injection quality evaluation coefficient of the target injection molding test piece>。
Specifically, the quality detection of the target injection molding test piece further comprises: measuring a design three-dimensional structural model of the target automobile bumper based on a measuring tool in CAD software to obtain the design length of the target automobile bumperDesign Width->Design surface area->Design volume->。
Surface area of concave area of surface layer of target injection molding test piece by using appearance defect monitoring instrument of quality inspection area of injection molding machineArea of raised area->Length of each crack->Collecting, wherein->Numbering the cracks of the surface layer->Calculating the surface defect evaluation coefficient of the target injection molding test piece>，/>。
Utilizing an X-ray detection instrument of a quality inspection area of an injection molding machine to carry out injection molding on each bubble volume of the inner layer of a test piece of a targetMaximum flow mark length->Maximum moire width->Collecting, wherein->Numbering each bubble in the inner layer +.>Calculating an inner layer defect evaluation coefficient of the target injection molding test piece +.>，/>。
From the formulaAnd obtaining a second-order injection quality evaluation coefficient of the target injection molding test piece.
Volume of three-dimensional structural model of target injection molding test piece based on measuring tool in CAD softwareAcquiring and storing the injection molding cavity volume of the target automobile bumper in the cloud database >By the formula->And obtaining the cooling shrinkage rate of the target injection molding test piece.
Performing diffraction experiment on the target injection molding test piece by using an X-ray diffraction instrument of a quality inspection area of the injection molding machine, obtaining diffraction pattern area and amorphous pattern area of a crystalline phase after diffraction of the target injection molding test piece, and taking the ratio between the two values as the cooling crystallinity of the target injection molding test piece。
Extracting a preset reasonable cooling shrinkage rate range and a preset reasonable cooling crystallinity range of the injection molding finished product of the target automobile bumper from a cloud database to obtain the reasonable cooling shrinkage rate of the injection molding finished product of the target automobile bumperAnd reasonable cooling crystallinity->Analysis of the Cooling quality evaluation coefficient of the target injection molded test piece +.>The calculation formula is as follows: />Wherein->The reasonable deviation thresholds of the cooling shrinkage rate and the cooling crystallinity of the preset injection molding test piece are respectively set.
The reasonable cooling shrinkage rate of the injection molding finished product of the target automobile bumper is obtained by extracting the upper limit value and the lower limit value of the preset reasonable cooling shrinkage rate range of the injection molding finished product of the target automobile bumper and carrying out average calculation, and the reasonable cooling crystallinity of the injection molding finished product of the target automobile bumper is obtained in the same way.
Specifically, the determining whether the injection molding quality of the target injection molding test piece meets the standard includes: extracting the standard reaching threshold values of the cleaning quality evaluation coefficient, the first-order injection quality evaluation coefficient, the second-order injection quality evaluation coefficient and the cooling quality evaluation coefficient in the injection molding standard inspection parameters of the target automobile bumper stored in the cloud database, and respectively marking the standard reaching threshold values as When meeting->And when the conditions are met, judging that the injection molding quality of the target injection molding test piece meets the standard, otherwise, judging that the injection molding quality of the target injection molding test piece does not meet the standard.
According to the embodiment of the invention, the cleaning quality evaluation coefficient, the first-order injection quality evaluation coefficient, the second-order injection quality evaluation coefficient and the cooling quality evaluation coefficient of the target injection molding test piece are analyzed and respectively compared with the corresponding standard reaching threshold value, and the comparison result is used as the judgment basis for judging whether the injection molding quality of the target injection molding test piece meets the standard or not, so that the multi-dimensional quality evaluation of the finished product of the target automobile bumper injection molding test piece is realized, the evaluation result has clear sources and basis, and the later quality tracing and the problem solving are facilitated.
The injection molding test mold parameter adjustment module is used for analyzing adjustment requirements of all parameter objects in preset injection molding test mold parameters and corresponding adjustment parameters, carrying out corresponding correction treatment on the preset injection molding test mold parameters, and repeating the operation until the injection molding quality of the target injection molding test piece reaches the standard.
Specifically, the analyzing the adjustment requirements of each parameter object and the corresponding adjustment parameters in the preset injection molding test parameters includes: when (when)In this case, the injection pressure preset for the cleaning device in the preset injection molding parameters is determined +. >There is a need for adjustment and the adjustment direction of the preset injection pressure of the cleaning device is determined to be up-regulated by the formulaObtaining a corrected injection pressure of the cleaning device, wherein +.>Is->。
According to the method, the cleaning quality evaluation coefficient of the target injection molding test piece is reasonably analyzed according to the surface gloss and the impurity condition, the cleaning quality evaluation coefficient is used as an adjustment basis of the preset injection pressure of the cleaning device in the injection molding machine, the cleaning quality is effectively improved, the quality reduction of the finished product of the injection molding test piece caused by insufficient cleaning is avoided, and the cleaning quality evaluation is tightly combined with the cleaning device of the injection molding machine to realize high integration.
When (when)When the cooling device is in the preset injection molding test parameters, the preset cooling temperature of the cooling device is judged>There is an adjustment requirement to enable the cooling shrinkage of the target injection molding test piece to be equal to the upper limit value of the reasonable range of the preset cooling shrinkage of the target automobile bumper injection molding finished product +.>And lower limit value->Comparing the cooling crystallinity of the target injection molding test piece with the upper limit value of the reasonable cooling crystallinity range preset by the injection molding finished product of the target automobile bumper>And lower limit value->Comparing, using the decision model->And obtaining the adjustment direction of the preset cooling temperature of the target injection molding test piece cooling device.
It should be noted that a lower cooling temperature may limit the ordered arrangement of the molecular chains resulting in a less crystalline molded test piece product, while a higher cooling temperature may facilitate a more ordered arrangement of the molecular chains, thereby increasing the crystallinity of the molded test piece product.
When the cooling temperature of the cooling device is abnormal, namely, the temperature is higher or lower, the higher temperature can lead to the larger cooling crystallinity or smaller cooling shrinkage, the lower temperature can lead to the smaller cooling crystallinity or larger cooling shrinkage, the larger cooling crystallinity and smaller cooling shrinkage can not occur at the same time, the smaller cooling crystallinity and larger cooling shrinkage can not occur at the same time, the conditions violate the basic properties of materials and the physical rule of the injection molding process, and are not in accordance with the fact logic, so the conditions are not included in the consideration factors of the adjustment direction judging model of the preset cooling temperature of the target injection molding test piece cooling device.
When the preset adjustment direction of the cooling temperature of the cooling device is up-regulated, the formula is adoptedObtaining a corrected cooling temperature of the cooling device.
When the preset adjustment direction of the cooling temperature of the cooling device is downward adjustment, the method is represented by the formula Obtaining a corrected cooling temperature of the cooling device.
According to the embodiment of the invention, the cooling quality evaluation coefficient of the target injection molding test piece is reasonably analyzed according to the cooling shrinkage rate and the cooling crystallinity, an adjustment basis is provided for the preset cooling temperature of the cooling device in the injection molding machine, and scientific and accurate direction adjustment guidance is given by combining the comparison conditions of the cooling shrinkage rate and the cooling crystallinity with the reasonable ranges of the cooling shrinkage rate and the cooling crystallinity respectively, so that the cooling process of the injection molding test piece is optimized, the quality and the stability of the injection molding test piece are improved, and the defect rate is reduced.
Specifically, the analyzing the adjustment requirements of each parameter object and the corresponding adjustment parameters in the preset injection molding test parameters further includes: when (when)When the injection pressure preset by the injection device in the preset injection molding test parameters is judged +.>There is an adjustment requirement to extract the length ratio +.f of the three-dimensional structural model of the target injection molding test piece to the designed three-dimensional structural model of the target automobile bumper>Ratio of width->Ratio of thickness->And the area ratio of the respective corresponding opening areas +.>When (when)When determining the preset adjusting direction of the injection pressure of the injection deviceFor down-regulation, by the formulaObtaining a corrected injection pressure of the injection device when +.>When the adjustment direction of the injection pressure preset by the injection device is determined to be up-regulated, the injection pressure is determined to be up-regulated by the formula +. >A corrected injection pressure of the injection device is obtained.
It should be noted that, an excessive injection pressure may cause excessive extrusion of molten plastic in the mold, so that the size of the injection molding test piece finished product becomes larger, the shape is inaccurate, but the structure is complete, and an excessively small injection pressure may cause short injection, so that the size of the injection molding test piece finished product becomes smaller, the shape is inaccurate, and even the structure is incomplete, so that the adjustment direction of the injection pressure preset by the injection device is determined according to the related dimensional proportion relation between the three-dimensional structure model of the target injection molding test piece and the design three-dimensional structure model of the target automobile bumper.
According to the embodiment of the invention, the first-order injection quality evaluation coefficient of the target injection test piece is comprehensively analyzed through the injection form similarity and the injection structure matching degree of the target injection test piece, the first-order injection quality evaluation coefficient is closely combined with the injection pressure preset by the injection device in the injection machine, the adjustment direction of the injection pressure preset by the injection device is reasonably evaluated according to the size change condition of the target injection test piece, and accurate adjustment parameter calculation is performed, so that the defect of an injection test piece finished product caused by improper injection pressure is prevented, and data optimization and data support are provided for accurate standard injection parameter acquisition.
When (when)In this case, the injection speed of the injection device preset in the preset injection test parameters is determined>There is a need for adjustment to extract the target notesSurface layer defect evaluation coefficient and inner layer defect evaluation coefficient of plastic test piece, when->When the preset injection speed of the injection device is adjusted downwards, the adjustment direction of the preset injection speed of the injection device is determined to be adjusted downwards, and the adjustment direction is determined to be adjusted downwards according to the formula +.>Obtaining a corrected injection speed of the injection device when +.>When the preset injection speed of the injection device is adjusted upwards, the adjustment direction of the preset injection speed of the injection device is determined to be adjusted upwards, and the adjustment direction is defined by the formula +.>A corrected injection speed of the injection device is obtained.
When the injection speed is too low, the flow speed of the plastic in the mold cavity is slow, so that the pressure of the plastic in the mold cavity is insufficient to fill each angle of the mold, and the defects of cracks, concave-convex and the like on the surface layer of the finished product of the injection molded test piece occur in the cooling process, and the external shrinkage phenomenon is caused. When the injection speed is too high, the flow speed of the plastic in the mold cavity is too high, so that bubbles in the plastic can not be discharged in time, and further internal bubbles are formed, meanwhile, the high-speed flowing plastic can generate excessive shearing force in the mold cavity, so that plastic molecular chains are broken, the surface layer and the inner layer are formed to generate unobtrusive flow marks, air marks and other defects, and internal shrinkage phenomenon is caused, and therefore the surface layer defect evaluation coefficient and the inner layer defect evaluation coefficient of the target injection molding test piece are compared, and the surface layer defect evaluation coefficient and the inner layer defect evaluation coefficient are used as the determination basis of the preset adjustment direction of the injection speed of the injection device.
It should be further noted that, in the internal shrinkage phenomenon, defects such as unobtrusive flow marks and air lines generated on the surface layer of the finished product of the injection molding test piece may exist, and the generation principle thereof regards the detected length of the flow marks and the detected width of the air lines as the parameters of the defects of the inner layer.
According to the embodiment of the invention, the second-order injection quality evaluation coefficient of the target injection molding test piece is reasonably analyzed from the surface defect evaluation coefficient and the inner defect evaluation coefficient of the target injection molding test piece, and the adjustment direction of the injection speed preset by the injection device is effectively judged according to the comparison condition of the surface defect evaluation coefficient and the inner defect evaluation coefficient, so that the corresponding adjustment parameters are obtained, the quality of the injection molding test piece is improved, and more accurate and efficient data guidance is provided for the injection molding optimization process.
And the standard injection molding parameter feedback module is used for feeding back the current injection molding test parameters as standard injection molding parameters when the injection molding quality of the target injection molding test piece reaches the standard.
The injection molding test operation stability coefficient feedback module is used for recording correction parameters of injection molding test parameters in the process of simulating the injection test piece of the target automobile bumper by the injection molding machine, evaluating the operation stability coefficient of the injection molding test work of the target automobile bumper and feeding back.
Specifically, the correction parameters include each adjustment parameter object for each correction and its corresponding adjustment absolute amplitude.
Specifically, the evaluation of the operation stability coefficient of the injection molding test work of the target automobile bumper comprises the following steps: extracting each corrected adjustment parameter object in correction parameters of injection molding test parameters in the process of simulating injection test piece production of target automobile bumper by using injection molding machine, and setting operation influence weights corresponding to each corrected adjustment parameter objectWherein->For each correction number +.>，/>For the number of the respective adjustment parameter object, +.>And combining the absolute amplitude of each adjustment parameter object of each correction>Calculating the running stability coefficient of the injection molding test work of the target automobile bumper,wherein->And correcting the reference absolute amplitude of the single adjustment parameter object for the preset injection molding test parameters of the injection molding machine at a time.
It should be noted that, setting the operation influencing weights corresponding to the respective corrected adjustment parameter objects above affects the quality of the injection molding product according to the adjustment parameter objects in the injection molding operation, where the adjustment parameter objects are divided into the injection pressure of the cleaning device, the injection pressure and the injection speed of the injection device, and the cooling temperature of the cooling device, and in the injection molding operation, the influencing weights of the respective adjustment parameter objects on the quality of the product are not invariable, and need to be dynamically adjusted according to the actual situation and the requirement, and in general, the injection device affects the quality of the injection molding product the greatest, because the injection pressure and the injection speed directly affect whether the molten plastic can be uniformly injected into the mold and form a high quality product, and the cleaning device affects the quality of the injection molding product the least, because the injection pressure affects the cleaning degree of the mold, and indirectly affects the appearance and performance of the product.
For example, the operation influence weights corresponding to the injection pressure of the cleaning device, the injection pressure and injection speed of the injection device, and the cooling temperature of the cooling device may be set to 0.15, 0.3, 0.25.
It should be noted that, the reference absolute amplitude of the single adjustment parameter object for single correction of the injection molding test parameters of the preset injection molding machine can be obtained by extracting the absolute amplitude of each adjustment parameter object for each correction in the history setting time period of the injection molding machine and performing average calculation.
According to the embodiment of the invention, the correction parameters of the injection molding test parameters in the process of simulating the injection test piece of the target automobile bumper by the injection molding machine are recorded, the operation stability coefficient of the injection molding test work of the target automobile bumper is evaluated and fed back, so that the operation stability of the whole injection molding test stage process is comprehensively known, the subsequent injection molding test process optimization of the automobile bumper is realized, and the injection molding production of the automobile bumper is facilitated to a certain extent.
The cloud database is used for storing the volume of an injection molding cavity of the target automobile bumper, a designed three-dimensional structure model and injection molding standard inspection parameters, wherein the injection molding standard inspection parameters comprise a cleaning quality evaluation coefficient, a first-order injection quality evaluation coefficient, a second-order injection quality evaluation coefficient and a standard reaching threshold of a cooling quality evaluation coefficient, and storing a cooling shrinkage reasonable range and a cooling crystallinity reasonable range which are preset in an injection molding finished product of the target automobile bumper.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art of describing particular embodiments without departing from the structures of the invention or exceeding the scope of the invention as defined by the claims.
Claims (7)
1. An automotive exterior trim injection molding control system, comprising:
the injection molding test mold parameter input module is used for inputting preset injection molding test mold parameters into the injection molding machine;
the injection molding test mold work development module is used for simulating and producing an injection molding test piece of the target automobile bumper according to preset injection molding test mold parameters, obtaining an injection molding test piece finished product of the target automobile bumper and marking the injection molding test piece finished product as a target injection molding test piece;
the injection molding finished product quality evaluation module is used for carrying out quality detection on a target injection molding test piece, judging whether the injection molding quality of the target injection molding test piece meets the standard, if so, executing the standard injection molding parameter feedback module, and otherwise, executing the injection molding test parameter adjustment module;
the injection molding test mold parameter adjusting module is used for analyzing the adjustment requirements of all parameter objects in preset injection molding test mold parameters and corresponding adjustment parameters, carrying out corresponding correction treatment on the preset injection molding test mold parameters, and repeating the operation until the injection molding quality of a target injection molding test piece reaches the standard;
The standard injection molding parameter feedback module is used for feeding back the current injection molding test parameters as standard injection molding parameters when the injection molding quality of the target injection molding test piece reaches the standard;
the injection molding test operation stability coefficient feedback module is used for recording correction parameters of injection molding test parameters in the process of simulating the injection test piece of the target automobile bumper by the injection molding machine, evaluating the operation stability coefficient of the injection molding test work of the target automobile bumper and feeding back;
the cloud database is used for storing the volume of an injection molding cavity of the target automobile bumper, a three-dimensional structure model and injection molding standard investigation parameters, wherein the injection molding standard investigation parameters comprise a cleaning quality evaluation coefficient, a first-order injection quality evaluation coefficient, a second-order injection quality evaluation coefficient and a standard reaching threshold of a cooling quality evaluation coefficient, and storing a cooling shrinkage reasonable range and a cooling crystallinity reasonable range which are preset in an injection molding finished product of the target automobile bumper;
the quality detection of the target injection molding test piece comprises the following steps: image acquisition and model construction are carried out on a target injection molding test piece by utilizing an automatic optical monitor of a quality inspection area of an injection molding machine, an image and a three-dimensional structure model of the target injection molding test piece are obtained, and the surface glossiness of the target injection molding test piece is obtained by utilizing an image analysis tool Surface impurity amount->And the cumulative area ratio ∈thereof>Thereby analyzing the cleaning quality evaluation coefficient +.>The calculation formula is as follows: />Wherein->For the surface of the injection molded test piece to be predetermined, reference is made to the impurity quantity, < >>Is a natural constant;
respectively importing a three-dimensional structure model of a target injection molding test piece and a design three-dimensional structure model of a target automobile bumper stored in a cloud database into CAD software, drawing a line profile of the target injection molding test piece and a design line profile of the target automobile bumper by using a drawing tool of the CAD software, comparing the two in the same proportion, and further obtaining the injection molding form similarity of the target injection molding test piece；
Carrying out repeated comparison on the three-dimensional structure model of the target injection molding test piece and the designed three-dimensional structure model of the target automobile bumper in CAD software to obtain the length ratio of the three-dimensional structure model of the target injection molding test piece to the designed three-dimensional structure model of the target automobile bumperRatio of width->Ratio of thickness->And the area ratio of the respective corresponding opening areas +.>Wherein->Numbering for each corresponding opening area +.>And is further defined by the formula->Obtaining the matching degree of the injection structure of the target injection molding test piece, wherein +. >The number of the corresponding opening areas;
from the formulaObtaining a first-order injection quality evaluation coefficient of the target injection molding test piece>；
The quality detection of the target injection molding test piece further comprises: measuring a design three-dimensional structural model of the target automobile bumper based on a measuring tool in CAD software to obtain the design length of the target automobile bumperDesign Width->Design surface area->Design volume->；
Surface area of concave area of surface layer of target injection molding test piece by using appearance defect monitoring instrument of quality inspection area of injection molding machineArea of raised area->Length of each crack->Collecting, wherein->Numbering the cracks of the surface layer->Calculating the surface defect evaluation coefficient of the target injection molding test piece>，/>；
Utilizing an X-ray detection instrument of a quality inspection area of an injection molding machine to carry out injection molding on each bubble volume of the inner layer of a test piece of a targetMaximum flow mark length->Maximum moire width->Collecting, wherein->Numbering each bubble in the inner layer +.>Calculating an inner layer defect evaluation coefficient of the target injection molding test piece +.>，/>；
From the formulaObtaining a second-order injection quality evaluation coefficient of the target injection molding test piece;
volume of three-dimensional structural model of target injection molding test piece based on measuring tool in CAD software Acquiring and storing the injection molding cavity volume of the target automobile bumper in the cloud database>By the formula->Obtaining the cooling shrinkage rate of a target injection molding test piece;
performing diffraction experiment on the target injection molding test piece by using an X-ray diffraction instrument of a quality inspection area of the injection molding machine, obtaining diffraction pattern area and amorphous pattern area of a crystalline phase after diffraction of the target injection molding test piece, and taking the ratio between the two values as the cooling crystallinity of the target injection molding test piece；
Extracting a preset reasonable cooling shrinkage rate range and a preset reasonable cooling crystallinity range of the injection molding finished product of the target automobile bumper from a cloud database to obtain the reasonable cooling shrinkage rate of the injection molding finished product of the target automobile bumperAnd reasonable cooling crystallinity->Analysis target injection moldingCooling quality evaluation coefficient of test piece->The calculation formula is as follows: />Wherein->The reasonable deviation thresholds of the cooling shrinkage rate and the cooling crystallinity of the preset injection molding test piece are respectively set.
2. The automotive exterior trim injection molding control system of claim 1, wherein: the preset injection molding test parameters comprise preset injection pressure of the cleaning device, preset injection pressure and injection speed of the injection device and preset cooling temperature of the cooling device.
3. The automotive exterior trim injection molding control system of claim 1, wherein: whether the injection molding quality of the target injection molding test piece meets the standard or not is judged, and the method comprises the following steps: extracting the standard reaching threshold values of the cleaning quality evaluation coefficient, the first-order injection quality evaluation coefficient, the second-order injection quality evaluation coefficient and the cooling quality evaluation coefficient in the injection molding standard inspection parameters of the target automobile bumper stored in the cloud database, and respectively marking the standard reaching threshold values asWhen meeting the following requirementsAnd when the conditions are met, judging that the injection molding quality of the target injection molding test piece meets the standard, otherwise, judging that the injection molding quality of the target injection molding test piece does not meet the standard.
4. The automotive exterior trim injection molding control system of claim 3, wherein: the adjustment requirement of each parameter object in the injection molding test parameters preset by the analysisCorresponding adjustment parameters, including: when (when)In this case, the injection pressure preset for the cleaning device in the preset injection molding parameters is determined +.>There is a need for an adjustment and the adjustment direction of the preset injection pressure of the cleaning device is determined to be adjusted upwards by the formula +.>Obtaining a corrected injection pressure of the cleaning device;
when (when)When the cooling device is in the preset injection molding test parameters, the preset cooling temperature of the cooling device is judged >There is an adjustment requirement to enable the cooling shrinkage of the target injection molding test piece to be equal to the upper limit value of the reasonable range of the preset cooling shrinkage of the target automobile bumper injection molding finished product +.>And lower limit value->Comparing the cooling crystallinity of the target injection molding test piece with the upper limit value of the reasonable cooling crystallinity range preset by the injection molding finished product of the target automobile bumper>And lower limit value->Comparing, and using a judgment modelObtaining an adjustment direction of a preset cooling temperature of a target injection molding test piece cooling device;
when the preset adjustment direction of the cooling temperature of the cooling device is up-regulated, the formula is adoptedObtaining a corrected cooling temperature of the cooling device;
when the preset adjustment direction of the cooling temperature of the cooling device is downward adjustment, the method is represented by the formulaObtaining a corrected cooling temperature of the cooling device.
5. The automotive exterior trim injection molding control system of claim 3, wherein: the method for analyzing the adjustment requirements and the corresponding adjustment parameters of each parameter object in the preset injection molding test parameters further comprises the following steps: when (when)When the injection pressure preset by the injection device in the preset injection molding test parameters is judged +.>There is an adjustment requirement to extract the length ratio +.f of the three-dimensional structural model of the target injection molding test piece to the designed three-dimensional structural model of the target automobile bumper >Ratio of widthRatio of thickness->And the area ratio of the respective corresponding opening areas +.>When->When the adjustment direction of the injection pressure preset by the injection device is determined to be down-regulated, the injection pressure is determined to be adjusted by the formula +.>Obtaining a corrected injection pressure of the injection device when +.>When the adjustment direction of the injection pressure preset by the injection device is determined to be up-regulated, the injection pressure is determined to be up-regulated by the formula +.>Obtaining a corrected injection pressure of the injection device;
when (when)In this case, the injection speed of the injection device preset in the preset injection test parameters is determined>There is a need for adjustment to extract the surface defect evaluation coefficient and the inner defect evaluation coefficient of the target injection molded test piece when +.>When the preset injection speed of the injection device is adjusted downwards, the adjustment direction of the preset injection speed of the injection device is determined to be adjusted downwards, and the adjustment direction is determined to be adjusted downwards according to the formula +.>Obtaining a corrected injection speed of the injection device when +.>When the preset injection speed of the injection device is adjusted upwards, the adjustment direction of the preset injection speed of the injection device is determined to be adjusted upwards, and the adjustment direction is defined by the formula +.>Obtaining injection deviceAnd correcting the injection speed.
6. The automotive exterior trim injection molding control system of claim 1, wherein: the correction parameters comprise the objects of each adjustment parameter corrected for each time and the corresponding absolute adjustment amplitude values.
7. The automotive exterior trim injection molding control system of claim 6, wherein: the operation stability coefficient of the injection molding test work of the target automobile bumper is evaluated, and the method comprises the following steps: extracting each corrected adjustment parameter object in correction parameters of injection molding test parameters in the process of simulating injection test piece production of target automobile bumper by using injection molding machine, and setting operation influence weights corresponding to each corrected adjustment parameter object Wherein->For each correction number +.>，/>For the number of the respective adjustment parameter object, +.>And combining the absolute amplitude values of the adjustment parameter objects corrected each timeCalculating the running stability coefficient of the injection molding test work of the target automobile bumper, and (I)>WhereinAnd correcting the reference absolute amplitude of the single adjustment parameter object for the preset injection molding test parameters of the injection molding machine at a time.
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