CN117021521A - Debugging method for production process parameters of injection molding machine, electronic equipment and storage medium - Google Patents
Debugging method for production process parameters of injection molding machine, electronic equipment and storage medium Download PDFInfo
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- CN117021521A CN117021521A CN202311042943.6A CN202311042943A CN117021521A CN 117021521 A CN117021521 A CN 117021521A CN 202311042943 A CN202311042943 A CN 202311042943A CN 117021521 A CN117021521 A CN 117021521A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 152
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 85
- 230000008569 process Effects 0.000 title claims abstract description 41
- 238000003860 storage Methods 0.000 title claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 103
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- 238000012360 testing method Methods 0.000 claims description 33
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- 238000004891 communication Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76913—Parameter setting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76929—Controlling method
- B29C2945/76939—Using stored or historical data sets
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a debugging method of production process parameters of an injection molding machine, electronic equipment and a storage medium. The debugging method comprises the following steps: determining initial production process parameters of the injection molding machine when a preset product is produced after the mold is moved; collecting mold parameters of an injection mold in the process of running the injection molding machine based on the initial production process parameters; responding to the fact that the mold parameters exceed the standard parameter range corresponding to the preset product, and debugging the initial production process parameters based on preset parameter debugging rules until the mold parameters of the injection mold do not exceed the standard parameter range; and taking the debugged initial production process parameters as actual production process parameters of the injection molding machine when the preset product is produced after the mold is moved. The aim of automatically debugging injection molding process parameters after mould moving is achieved through the scheme.
Description
Technical Field
The invention relates to the technical field of injection molding equipment, in particular to a debugging method of production process parameters of an injection molding machine, electronic equipment and a readable storage medium.
Background
The injection molding machine adopts an injection molding process, can realize mass production of plastic parts with complex shapes, is one of important processing methods, and is widely applied to various aspects of national defense, transportation, industry, agriculture and daily life.
With the development of automation technology, the existing injection molding production and processing can basically realize automation. Under the conditions of changing an injection molding machine, changing a mold, manufacturing a new mold, leaving a factory and the like, the injection molding process parameters need to be debugged to produce qualified products. The prior art generally adjusts injection molding process parameters based on production experience or historical data. The method for debugging the injection molding process parameters has higher requirements on the artificial practice experience and the capability level of the debugging personnel; in addition, the problem can be solved by debugging for many times, the efficiency is low, and the production progress is influenced. In addition, the automatic production of the injection molding product cannot be realized in an injection molding production debugging mode of automatic and manual debugging in the production process, and the development requirement and the requirement of the intelligent manufacturing industry are not met.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to solve the technical problems of at least overcoming the defects of the prior art and providing a debugging method for production process parameters of an injection molding machine, wherein the initial production process parameters of the injection molding machine when the preset product is produced after the mold is moved are debugged based on the relation between the mold parameters of the injection molding mold and the standard parameter range corresponding to the preset product, so that the actual production process parameters of the injection molding machine when the preset product is produced after the mold is moved are determined, and the purpose of automatically debugging the injection process parameters after the mold is moved is realized.
In order to solve the technical problem, a first aspect of the present invention provides a method for debugging production process parameters of an injection molding machine, including:
determining initial production process parameters of the injection molding machine when a preset product is produced after the mold is moved;
collecting mold parameters of an injection mold in the process of running the injection molding machine based on the initial production process parameters;
responding to the fact that the mold parameters exceed the standard parameter range corresponding to the preset product, and debugging the initial production process parameters based on preset parameter debugging rules until the mold parameters of the injection mold do not exceed the standard parameter range; and
and taking the debugged initial production process parameters as actual production process parameters of the injection molding machine when the preset product is produced after the mold is moved.
In some embodiments, the step of determining initial production process parameters of the injection molding machine for producing the predetermined product after the transfer of the mold comprises:
taking historical production process parameters for producing the preset product by using a historical injection molding machine;
invoking a first equipment parameter of the historical injection molding machine and a second equipment parameter of the injection molding machine;
and adjusting the historical production process parameters according to the proportional relation between the first equipment parameters and the second equipment parameters so as to obtain the initial production process parameters.
In some embodiments, the standard parameter ranges are obtained by:
determining preset technological parameters required for producing the preset product based on the product parameters of the preset product;
performing a DOE test based on the preset process parameters, and collecting sensor parameters by using a sensor system arranged on a test die in the DOE test process; and
and in response to determining that the preset product produced by the DOE test meets preset requirements, forming the standard parameter range based on the collected sensor parameters.
In some embodiments, the preset process parameters include injection parameters and position injection parameters;
wherein, the step of determining the preset technological parameters required for producing the preset product based on the product parameters of the preset product comprises the following steps:
retrieving the injection parameters from a preset historical process library based on the product parameters of the preset product; and
and carrying out die flow analysis based on the product parameters of the preset product to determine the position injection molding parameters.
In some embodiments, the positional injection molding parameters include cooling time;
the step of determining the position injection molding parameters by performing the mold flow analysis based on the product parameters of the preset product comprises the following steps:
Carrying out die flow analysis based on the product parameters of the preset product, and determining the original cooling time by combining the weight of the preset product;
determining a compensation cooling time based on the material properties of the preset product; and
and determining the cooling time according to the original cooling time and the compensation cooling time.
In some embodiments, in response to determining that the DOE test produces a preset product that meets preset requirements, the step of forming the standard parameter range based on the collected sensor parameters includes:
recording a first sensor parameter in response to determining that a preset product produced by the DOE test meets a preset requirement;
continuously adjusting the value of the preset technological parameter upwards/downwards until the preset product produced by the DOE test is determined to not meet the preset requirement, and recording a second sensor parameter; and
and taking a parameter range included in the second sensor parameter as the standard parameter range.
In some embodiments, the mold parameter comprises mold cavity pressure; the standard parameter ranges include standard mold cavity pressure ranges; the initial production process parameters comprise injection speed, injection pressure and dwell time;
The step of debugging the initial production process parameters based on preset parameter debugging rules comprises the following steps:
increasing the injection rate in response to determining that the slope of the pressure curve formed by the cavity pressure is lower than the slope of the standard pressure curve within the standard cavity pressure range;
increasing the injection pressure in response to determining that the slope of the pressure curve formed by the cavity pressure remains below the slope of the standard pressure curve after increasing the injection speed;
and adjusting the dwell time in response to determining that the integrated area of the pressure curve formed by the cavity pressure is less than the integrated area of the standard pressure curve.
In some embodiments, the mold parameters further comprise a mold cavity temperature; the standard parameter range also comprises a standard die cavity temperature range; the initial production process parameters also comprise a holding pressure;
the step of debugging the initial production process parameters based on preset parameter debugging rules further comprises the following steps:
and increasing the holding pressure in response to determining that the highest point of the pressure curve formed by the mold cavity pressure is lower than the highest point of the standard pressure curve, or in response to determining that the highest point of the temperature curve formed by the mold cavity temperature is lower than the highest point of the standard temperature curve in the standard mold cavity temperature range.
A second aspect of the present invention is to provide an electronic apparatus including:
a processor; and
the memory is in communication connection with the processor;
the memory stores a program executable by a processor, and when the program is executed by the processor, the processor can execute the debugging method of the production process parameters of the injection molding machine.
A third aspect of the present invention provides a readable storage medium having a computer program stored thereon, which when executed by a processor implements a method for debugging production process parameters of an injection molding machine according to the above.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
(1) According to the invention, the initial production process parameters of the injection molding machine when the preset product is produced after the mold is moved are debugged based on the relation between the mold parameters of the injection mold and the standard parameter ranges corresponding to the preset product, so that the actual production process parameters of the injection molding machine when the preset product is produced after the mold is moved are determined, and the purpose of automatically debugging the injection molding process parameters after the mold is realized.
(2) According to the invention, the historical production process parameters are adjusted according to the proportional relation between the first equipment parameters of the historical injection molding machine and the second equipment parameters of the injection molding machine after the mold is moved, so that the initial production process parameters of the injection molding machine after the mold is moved are obtained, the stability of the initial production process parameters is improved, and a data basis is provided for debugging the injection molding process parameters after the mold is moved.
(3) According to the invention, the sensor parameters on the test mold which are obtained in the DOE test process and are directly related to the product are used as data sources of standard parameter ranges, so that the accuracy of automatic debugging of injection molding process parameters after mold shifting is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is an architecture suitable for implementing a method of debugging production process parameters of an injection molding machine provided in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a flow chart of a method for debugging production process parameters of an injection molding machine according to an exemplary embodiment of the present invention;
fig. 3 is a flowchart of step S210 according to an exemplary embodiment of the present invention;
FIG. 4 is a flow chart of a method of obtaining a standard parameter range;
fig. 5 is a flowchart of step S310 according to an exemplary embodiment of the present invention;
Fig. 6 is a flowchart of step S330 according to an exemplary embodiment of the present invention;
fig. 7 is a flowchart of step S230 according to an exemplary embodiment of the present invention;
fig. 8 is a schematic structural view of an electronic device according to an exemplary embodiment of the present invention;
in the figure: 100. a framework; 110. a determination unit; 120. a sensor system; 130. an injection molding machine;
500. an electronic device; 501. a processor; 502. a memory; 503. a bus; 504. a communication interface.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Fig. 1 shows an architecture suitable for implementing a method for debugging production process parameters of an injection molding machine according to an exemplary embodiment of the present invention.
As shown in fig. 1, architecture 100 includes a determination unit 110, a sensor system 120, and an injection molding machine 130.
The determining unit 110 is configured to perform the steps of the method for debugging production process parameters of an injection molding machine provided by the present invention, which will be described in detail below.
The roles and functions of the sensor system 120 and the injection molding machine 130 are explained in the following in connection with the process of explaining the technical terms referred to herein.
Moving die: the moving of the mold comprises the conditions of changing the injection molding machine, changing the injection mold, manufacturing a manufacturer, leaving a factory with a new injection mold, and the like.
It will be appreciated that in either case, if the injection molding machine is still performing production activities using the injection molding process parameters prior to mold transfer, the quality of the injection molded product will necessarily be affected. Therefore, after the mold is moved, the injection molding process parameters of the injection molding machine are required to be debugged so as to determine the actual production process parameters required by the injection molding machine when the preset product is produced after the mold is moved, and thus, the qualified preset product is produced.
Production process parameters: the production process parameters refer to parameters set on the injection molding machine 130.
The historical production process parameters refer to injection process parameters when a qualified preset product is produced by using a historical injection molding machine before moving a mold. From the foregoing explanation of the mold transfer, it will be appreciated herein that "history injection molding machine" does not mean that the injection molding machine must not be employed after the mold transfer. As an example, in the case of mold shifting such as injection mold replacement manufacturers and new injection mold shipment, the previously used injection molding machine is also referred to herein as a history injection molding machine.
The initial production process parameters refer to injection process parameters of the injection molding machine 130 when the pre-set product is produced after the mold is moved, which is determined before the debugging. The actual production process parameters refer to the injection process parameters of the injection molding machine 130 when the predetermined product is produced after the mold is moved, which is determined after the debugging. It can be seen that the production process parameters of the injection molding machine 130 are specific to the injection molding machine 130, and the injection mold is in direct contact with the produced predetermined product. Therefore, the production process parameters cannot be used as an indicator of whether the preset product produced by the injection molding machine 130 is a good product. In other words, the injection process parameters of the injection molding machine 130 are set values rather than actual values, and different pressure losses are caused by wear of the injection molding machine 130, lubrication oil temperature, and weather, which results in changes in the pressure and speed applied to the plastic parts.
Mold parameters: the mold parameters refer to sensor parameters acquired using the sensor system 120 provided on the injection mold.
By way of example, the sensor system 120 includes a pressure sensor, a temperature sensor disposed within the injection mold cavity for sensing a cavity pressure and a cavity temperature within the injection mold cavity. The mold cavity pressure and mold cavity temperature may form a pressure curve versus temperature curve.
Optionally, the sensor system 120 further includes a temperature and humidity sensor and a dew point sensor disposed on the injection mold housing, and is configured to collect the temperature, humidity and dew point of the environment where the injection mold is located, so as to determine whether the temperature and humidity and dew point of the environment where the injection mold is located can reach the conditions for producing a qualified preset product.
Specifically, when precision injection molding is performed, there is a strict requirement on whether the surrounding environment can meet a production standard, so that the injection process parameters of the injection molding machine 130 need to be adjusted based on the temperature, humidity and dew point of the environment in which the injection mold is located. For example, when the temperature of cooling water on an injection mold is extremely low, the situation of water condensation occurs in an environment with high temperature and high humidity, and the preset product produced under the situation can have the problems of air marks, water marks and the like.
Standard parameter range: the standard parameter range refers to a parameter range corresponding to the mold parameter.
Corresponding to the cavity pressure and cavity temperature are a standard cavity pressure range and a standard cavity temperature range. Corresponding to the temperature, humidity and dew point of the environment in which the injection mold is located is a standard ambient temperature range, a standard ambient humidity range, and a standard ambient dew point range.
The standard parameter ranges may form a standard curve. For example, a standard mold cavity pressure range and a standard mold cavity temperature range may form a standard pressure curve and a standard temperature curve. The standard ambient temperature range, the standard ambient humidity range, and the standard ambient dew point range may form a standard ambient temperature curve, a standard ambient humidity curve, and a standard ambient dew point curve.
Because the data collected by the pressure sensor, the temperature and humidity sensor and the dew point sensor in the die cavity and the shell are directly collected from the injection die of the produced preset product, no kinetic energy loss exists, the die parameter range of the qualified product can be used as an index for representing whether the preset product produced by the injection molding machine is the qualified product or not. In other words, the standard curve is a sample directly contacted with the product, and has uniqueness, so long as the curve for confirming the mold parameters is the standard curve corresponding to the qualified product, the produced product is necessarily a qualified product.
Fig. 2 shows a flow chart of a method 200 for debugging production process parameters of an injection molding machine according to an exemplary embodiment of the invention. It should be noted that, the method 200 for debugging the production process parameters of the injection molding machine is implemented before the actual production activity of producing the preset product by using the injection molding machine.
As shown in fig. 2, the implementation of the method 200 for debugging production process parameters of an injection molding machine includes the following steps:
s210, determining initial production process parameters of an injection molding machine when a preset product is produced after the mold is moved;
s220, collecting mold parameters of an injection mold in the process of running the injection molding machine based on the initial production process parameters;
s230, debugging the initial production process parameters based on preset parameter debugging rules until the mold parameters of the injection mold do not exceed the standard parameter ranges in response to determining that the mold parameters exceed the standard parameter ranges corresponding to the preset products; and
s240, taking the debugged initial production process parameters as actual production process parameters of the injection molding machine when the preset product is produced after the mold is moved.
It should be understood that the steps illustrated in the method 200 of debugging injection molding machine production process parameters are not exclusive and that the method 200 of debugging injection molding machine production process parameters may also include additional steps not illustrated and/or may omit illustrated steps, as the scope of the invention is not limited in this respect. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. In addition, unless explicitly defined or contradicted by context, the particular steps included in the methods described herein need not be limited to the order described, but may be performed in any order or in parallel. Step S210 to step S240 are described in detail below with reference to fig. 1 to 7.
S210
In step S210, the determining unit 110 first determines initial production process parameters of the injection molding machine 130 when the pre-set product is produced after the mold is moved.
As previously described herein, the initial manufacturing process parameters are injection process parameters of the injection molding machine 130 when the pre-set product is produced after the mold is removed as determined before the debugging. The initial production process parameters include initial position parameters and initial injection parameters. Initial position parameters include, but are not limited to, storage position, forward speed, etc. Initial injection parameters include, but are not limited to, injection pressure, injection speed, metering, dwell pressure, dwell time, and the like.
In some embodiments, as shown in fig. 3, step S210 includes:
s211, retrieving historical production process parameters for producing the preset product by using a historical injection molding machine;
s212, calling the first equipment parameters of the historical injection molding machine and the second equipment parameters of the injection molding machine; and
s213, adjusting the historical production process parameters according to the proportional relation between the first equipment parameters and the second equipment parameters so as to obtain the initial production process parameters.
Specifically, the historical production process parameters of the historical injection molding machine for producing the preset product, the first device parameters of the historical injection molding machine, and the second device parameters of the post-mold-removal injection molding machine 130 may be stored in the database of the determining unit 110 in advance, so that the determining unit 110 may retrieve in steps S211 to S212. Alternatively, the historical production process parameters of the preset product produced by the historical injection molding machine, the first device parameters of the historical injection molding machine, and the second device parameters of the post-mold-removal injection molding machine 130 may be stored in the cloud communicatively connected to the determining unit 110 in advance, so that the determining unit 110 may call in steps S211 to S212.
The historical production process parameters may, for example, select injection process parameters that were used the last time the historical injection molding machine was used to produce the pre-set product. The historical production process parameters include historical location parameters and historical injection parameters. The historical location parameter and the historical injection parameter correspond to the initial location parameter and the initial injection parameter.
The equipment parameters include, but are not limited to, screw diameter, screw aspect ratio, maximum injection pressure, maximum injection speed, maximum metering, etc.
The following describes the implementation procedure of step S213.
In step S213, the historical position parameter may be adjusted according to the ratio of the screw diameter or the ratio of the length-diameter ratio of the screw in the first device parameter to the second device parameter, so as to obtain the initial position parameter. The historical injection pressure, the historical injection speed, the historical measurement and the like can be respectively adjusted according to the proportion of the maximum injection pressure, the proportion of the maximum injection speed and the proportion of the maximum measurement in the first equipment parameter and the second equipment parameter so as to obtain the initial injection parameter.
By way of example, the screw diameter of the history injection molding machine is D1, the screw diameter of the post-mold-shifting injection molding machine 130 is D2, and the ratio between the cross-sectional area of the screw of the post-mold-shifting injection molding machine 130 and the cross-sectional area of the screw of the history injection molding machine can be determined to be m, m= (D2/D1) 2 . Based on this, the initial position parameter can be obtained by multiplying m on the basis of the history position parameter. For example, the storage position of the history injection molding machine is 90, the storage position of the injection molding machine 130 is adjusted to 90×m after the mold is moved, the forward speed of the history injection molding machine is 32, and the forward speed of the injection molding machine 130 is adjusted to 32×m after the mold is moved.
The maximum injection pressure of the history injection molding machine 130 is P1, the maximum injection pressure of the injection molding machine 130 after the mold is moved is P2, and it can be determined that the ratio between the maximum injection pressure of the injection molding machine 130 after the mold is moved and the maximum injection pressure of the history injection molding machine is n, n=p2/P1. Based on this, the initial injection pressure can be obtained by multiplying n on the basis of the historical injection pressure. For example, the injection pressure of the history injection molding machine is 100, and the injection pressure of the injection molding machine 130 is adjusted to 100×n after the mold is moved.
The maximum injection speed of the history injection molding machine is S1, the maximum injection speed of the injection molding machine 130 after the mold is moved is S2, and it can be determined that the ratio between the maximum injection speed of the injection molding machine 130 after the mold is moved and the maximum injection speed of the history injection molding machine is l, i=s2/S1. Based on this, the initial injection speed can be obtained by multiplying l on the basis of the historical injection speed.
It will be understood that the units of the respective parameters are not limited herein, and that the units of the parameters may be common units in the art. In addition, the foregoing examples are merely illustrative of the present invention and are not to be construed as limiting the scope of the present invention.
It should be noted that, in the case of mold shifting such as the injection mold replacement manufacturer and the delivery of a new injection mold, the history injection molding machine and the injection molding machine 130 after mold shifting have the same equipment parameters. In this case, the above-described step S212 and step S213 may not be performed, and the historical production process parameters called in step S211 may be used as the initial production process parameters.
S220
After determining the initial production process parameters of the injection molding machine 130 when the pre-set product is produced after the mold is moved in step S210, in step S220, the mold parameters of the injection molding mold are collected by using the sensor system 120 provided on the injection molding mold during the operation of the injection molding machine 130 based on the initial production process parameters.
The sensor system 120 includes a pressure sensor, a temperature sensor disposed within the injection mold cavity for sensing a cavity pressure and a cavity temperature within the injection mold cavity. The mold cavity pressure and mold cavity temperature may form a pressure curve versus temperature curve.
Optionally, the sensor system 120 further includes a temperature and humidity sensor and a dew point sensor disposed on the injection mold housing, and is configured to collect the temperature, humidity and dew point of the environment where the injection mold is located, so as to determine whether the temperature and humidity and dew point of the environment where the injection mold is located can reach the conditions for producing a qualified preset product.
S230
In step S230, when the determining unit 110 determines that the mold parameter exceeds the standard parameter range corresponding to the preset product, the initial production process parameter is debugged based on the preset parameter debugging rule until the mold parameter of the injection mold does not exceed the standard parameter range.
The method 300 of obtaining the standard parameter ranges is described in detail below.
As shown in fig. 4, the method 300 includes the steps of:
s310, determining preset technological parameters required by producing the preset product based on the product parameters of the preset product;
s320, performing a DOE test based on the preset process parameters, and collecting sensor parameters by using a sensor system arranged on a test die in the DOE test process; and
s330, forming the standard parameter range based on the collected sensor parameters in response to determining that the preset product produced by the DOE test meets the preset requirement.
The preset technological parameters comprise injection parameters and position injection parameters. As shown in fig. 5, step S310 includes:
s311, calling the injection parameters from a preset historical process library based on the product parameters of the preset product; and
S312, carrying out die flow analysis based on the product parameters of the preset product to determine the position injection molding parameters.
Specifically, a large database composed of actual data during injection molding production and debugging is recorded after the adjustment of the same type of products in a mode of accumulating and calculating the mean value through accumulation of the database, and the large database is stored as a replicable historical process library. The historical process library may be stored in the database of the determining unit 110 in advance, or may be stored in the cloud communicatively connected to the determining unit 110 in advance, so that the determining unit 110 calls in step S311.
In step S311, the determining unit 110 invokes the product parameters in the history process library to confirm the related parameters of the injection pressure and the injection speed, and calculates an opening/closing time and an ejection time according to the basic performance of the apparatus.
In step S312, the average wall thickness of the ejection face is confirmed by the die flow analysis and the front end of the product, and an average value is made according to whether the preset product has a deformed position, so that the weight of the preset product can be calculated, and the initial calculation of the shortest cooling time is performed. Injection position, cooling time, storage position and other position injection parameters can be obtained through the die flow analysis. Meanwhile, the pressure maintaining pressure and time of the equipment can be preset through pressure maintaining presetting of die flow analysis. The mode flow analysis is performed by software commonly used in the art, and the invention is not described herein.
In some embodiments, the positional injection molding parameters include cooling time. The above-mentioned step S312 performs the die flow analysis based on the product parameters of the preset product, and performs the preliminary calculation of the shortest cooling time in combination with the weight of the preset product, to obtain the original cooling time.
In the invention, the compensation cooling time is also determined based on the material property of the preset product, and then the cooling time is determined according to the original cooling time and the compensation cooling time.
Specifically, the cooling time of the preset product is confirmed through various temperatures of a physical property table of the material, namely, compensation calculation is carried out through the heat capacity index, the heat dissipation rate, the wall thickness and the ejection temperature in the physical property table, meanwhile, calculation is carried out according to the performance in the physical property table of the material, whether the material with the working temperature needs to be dried or not is always calculated at the same time, and the die temperature is absolutely matched according to the actual glass transition temperature (Tg temperature) of the material, so that the compensation cooling time is obtained. In addition, an optimal back pressure can be given to the material to melt the material better.
In step S320, a DOE test is performed based on the preset process parameters determined in step S310, and sensor parameters are collected using a sensor system provided on the test mold during the DOE test. The process of collecting the sensor parameters by using the sensor system provided on the test die may refer to the description of step S220, and the present invention will not be described herein.
In some embodiments, as shown in fig. 6, step S330 includes:
s331, responding to the fact that the preset product produced by the DOE test meets the preset requirement, and recording a first sensor parameter;
s332, continuously adjusting the value of the preset process parameter upwards/downwards until the preset product produced by the DOE test is determined to not meet the preset requirement, and recording a second sensor parameter; and
s333, taking a parameter range included in the second sensor parameter as the standard parameter range.
Specifically, in step S331, when the determining unit 110 determines that the preset product produced by the DOE test meets the preset requirement based on the pre-trained image processing model, the sensor parameter collected at the current time is recorded as the first sensor parameter. As an example, an image acquisition unit may be used to acquire an image of a preset product produced by the DOE test, and based on a deep learning network training, an image processing model for determining that the preset product produced by the DOE test meets a preset requirement.
In step S332, the values of the preset process parameters are continuously adjusted upwards/downwards until it is determined that the preset product produced by the DOE test DOEs not meet the preset requirement, and the second sensor parameters are recorded.
It should be noted that the second sensor parameter includes an upper value limit when the preset product produced by the DOE test DOEs not meet the preset requirement after the preset process parameter is adjusted upwards, and a lower value limit when the preset product produced by the DOE test DOEs not meet the preset requirement after the preset process parameter is adjusted downwards.
In step S333, a parameter range included in the lower value limit and the upper value limit included in the second sensor parameter is set as the standard parameter range.
For example, in step S331, when it is determined that the preset product produced by the DOE test meets the preset requirement, the cavity pressure collected by the pressure sensor is 80. In other words, the pre-set product produced at a cavity pressure of 80 is standard, which requires a commissioning search. In step S332, the values of the preset process parameters are adjusted downward until the pressure sensor collects the cavity pressure 60 when it is determined that other problems occur in the preset product, and the cavity pressure 60 is recorded as the lower limit of the values of the cavity pressure. In step S332, the values of the preset process parameters are adjusted upwards until the pressure sensor collects the die cavity pressure 100 when it is determined that other problems occur in the preset product, and the die cavity pressure 100 is recorded as the upper limit of the die cavity pressure. In step S333, the range of the cavity pressures 60 to 100 is determined as the standard cavity pressure range.
The standard mold cavity temperature range, standard ambient humidity range, and standard ambient dew point range may be determined based on methods similar to those described above, and are not described in detail herein.
In some embodiments, as shown in fig. 7, in step S230, the step of debugging the initial production process parameter based on a preset parameter debugging rule includes:
s231, increasing the injection speed in response to determining that the slope of a pressure curve formed by the mold cavity pressure is lower than the slope of a standard pressure curve in the standard mold cavity pressure range;
s232, increasing the injection pressure in response to determining that the slope of a pressure curve formed by the cavity pressure is still lower than the slope of the standard pressure curve after the injection speed is increased;
s233, adjusting the dwell time in response to determining that the integral area of a pressure curve formed by the die cavity pressure is lower than the integral area of the standard pressure curve;
and S234, increasing the holding pressure in response to determining that the highest point of the pressure curve formed by the mold cavity pressure is lower than the highest point of the standard pressure curve, or in response to determining that the highest point of the temperature curve formed by the mold cavity temperature is lower than the highest point of the standard temperature curve in the standard mold cavity temperature range.
Specifically, the determining unit 110 compares the pressure curve formed by the cavity pressure with the standard pressure curve within the standard cavity pressure range, and when determining that the slope of the pressure curve formed by the cavity pressure is lower than the slope of the standard pressure curve within the standard cavity pressure range, the injection speed is insufficient, and the injection speed should be increased to perform slope adjustment. When the injection speed is adjusted, the slope of the pressure curve formed by the mold cavity pressure is still lower than the slope of the standard pressure curve, and the injection pressure is increased to ensure that the slope of the pressure curve formed by the mold cavity pressure is matched with the slope of the standard pressure curve.
In addition, when it is determined that the integral area of the pressure curve formed by the cavity pressure is lower than the integral area of the standard pressure curve, the pressure maintaining time is adjusted to adjust the integral area so as to ensure that the area of the pressure curve is enough.
And increasing the holding pressure to perform the peak pressure/temperature elevation when it is determined that the peak of the pressure curve formed by the cavity pressure is lower than the peak of the standard pressure curve, or in response to it being determined that the peak of the temperature curve formed by the cavity temperature is lower than the peak of the standard temperature curve in the standard cavity temperature range, meaning that the pressure value/temperature value of the peak cannot reach the standard curve range. Meanwhile, according to the peripheral sensors, an external factor is inserted, and the difference of the working environments is found.
In addition, when the pressure curve or the temperature curve is determined to move backwards, the injection speed is adjusted, the speed is increased, the curve moves forwards integrally, if the forward movement peak value is increased, the injection quantity can be adjusted and reduced according to the previous factor, the injection speed is required to be reduced when the curve moves forwards integrally, the pressure curve moves backwards, and if the peak value is reduced, the injection quantity is increased again for debugging.
It should be noted that the preset parameter tuning rule may be stored in the database of the determining unit 110 in advance, or may be stored in the cloud communicatively connected to the determining unit 110 in advance, so that the determining unit 110 may call in step S230.
S240
In step S240, the adjusted initial production process parameter is used as an actual production process parameter of the injection molding machine 130 when the preset product is produced after the mold is moved, and the actual production process parameter is sent to the injection molding machine 130.
The injection molding machine 130 is operated based on the adjusted initial production process parameters to produce a predetermined product satisfying the predetermined requirements.
According to the scheme, the initial production process parameters of the injection molding machine 130 when the preset product is produced after the mold is moved are debugged based on the relation between the mold parameters of the injection molding mold and the standard parameter ranges corresponding to the preset product, so that the actual production process parameters of the injection molding machine 130 when the preset product is produced after the mold is moved are determined, the purpose of automatically debugging the injection molding process parameters after the mold is achieved, and the problems of low debugging efficiency and low precision caused by debugging depending on the artificial practice experience after the mold is moved in the prior art are solved.
In addition, the injection molding machine 130 operates based on the debugged initial production process parameters, so that the times and time for adjusting the injection molding process parameters in the operation process of the injection molding machine 130 can be reduced, and the production efficiency can be improved.
The exemplary embodiment of the invention also provides electronic equipment. Fig. 8 shows a structure of the electronic device. As shown in fig. 8, the electronic device 500 includes a processor 501, a memory 502, a bus 503, and a communication interface 504, and the processor 501, the communication interface 504, and the memory 502 are connected by the bus 503. The electronic device is, for example, the determination unit 110.
The Memory 502 may include a high-speed random access Memory (RAM, random Access Memory), and may further include a Non-Volatile Memory 502 (Non-Volatile Memory), such as at least one magnetic disk Memory. The communication connection between the system network element and at least one other network element is implemented via at least one communication interface 504 (which may be wired or wireless), which may use the internet, a wide area network, a local network, a metropolitan area network, etc. Bus 503 may be an ISA bus, a PCI bus, an EISA bus, or the like. The bus 503 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one bi-directional arrow is shown in fig. 8, but not only one bus 503 or one type of bus 503.
The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in the processor 501. The processor 501 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (DigitalSignal Processor, DSP for short), application specific integrated circuits (Application Specific IntegratedCircuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor 501 may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 502, and the processor 501 reads information in the memory 502 and, in combination with its hardware, performs the steps of the method of the previous embodiment.
The exemplary embodiments of the present invention further provide a computer readable storage medium, where a computer program is stored, where when the computer program is called and executed by the processor 501, the computer executable instructions cause the processor 501 to implement the above-mentioned debugging method 200 for the production process parameters of the injection molding machine, and the specific implementation may refer to the method embodiment and will not be described herein.
The debugging method 200 of the production process parameters of the injection molding machine and the computer program product of the electronic device 500 provided by the embodiments of the present invention include a computer readable storage medium storing program codes, and instructions included in the program codes may be used to execute the method in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be repeated herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the device and/or the eccentric control device described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (10)
1. The method for debugging the production process parameters of the injection molding machine is characterized by comprising the following steps of:
determining initial production process parameters of the injection molding machine when a preset product is produced after the mold is moved;
collecting mold parameters of an injection mold in the process of running the injection molding machine based on the initial production process parameters;
responding to the fact that the mold parameters exceed the standard parameter range corresponding to the preset product, and debugging the initial production process parameters based on preset parameter debugging rules until the mold parameters of the injection mold do not exceed the standard parameter range; and
and taking the debugged initial production process parameters as actual production process parameters of the injection molding machine when the preset product is produced after the mold is moved.
2. The method for debugging production process parameters of an injection molding machine according to claim 1, wherein,
the method for determining the initial production process parameters of the injection molding machine when the preset product is produced after the mold is moved comprises the following steps:
taking historical production process parameters for producing the preset product by using a historical injection molding machine;
invoking a first equipment parameter of the historical injection molding machine and a second equipment parameter of the injection molding machine;
and adjusting the historical production process parameters according to the proportional relation between the first equipment parameters and the second equipment parameters so as to obtain the initial production process parameters.
3. The method for debugging production process parameters of an injection molding machine according to claim 1, wherein,
the standard parameter range is obtained by the following steps:
determining preset technological parameters required for producing the preset product based on the product parameters of the preset product;
performing a DOE test based on the preset process parameters, and collecting sensor parameters by using a sensor system arranged on a test die in the DOE test process; and
and in response to determining that the preset product produced by the DOE test meets preset requirements, forming the standard parameter range based on the collected sensor parameters.
4. The method for adjusting production process parameters of an injection molding machine according to claim 3, wherein,
the preset technological parameters comprise injection parameters and position injection parameters;
wherein, the step of determining the preset technological parameters required for producing the preset product based on the product parameters of the preset product comprises the following steps:
retrieving the injection parameters from a preset historical process library based on the product parameters of the preset product; and
and carrying out die flow analysis based on the product parameters of the preset product to determine the position injection molding parameters.
5. The method for adjusting production process parameters of an injection molding machine according to claim 4, wherein,
the position injection molding parameters include cooling time;
the step of determining the position injection molding parameters by performing the mold flow analysis based on the product parameters of the preset product comprises the following steps:
carrying out die flow analysis based on the product parameters of the preset product, and determining the original cooling time by combining the weight of the preset product;
determining a compensation cooling time based on the material properties of the preset product; and
and determining the cooling time according to the original cooling time and the compensation cooling time.
6. The method for adjusting production process parameters of an injection molding machine according to claim 3, wherein,
in response to determining that the preset product produced by the DOE test meets a preset requirement, the step of forming the standard parameter range based on the collected sensor parameters includes:
recording a first sensor parameter in response to determining that a preset product produced by the DOE test meets a preset requirement;
continuously adjusting the value of the preset technological parameter upwards/downwards until the preset product produced by the DOE test is determined to not meet the preset requirement, and recording a second sensor parameter; and
And taking a parameter range included in the second sensor parameter as the standard parameter range.
7. The method for adjusting production process parameters of an injection molding machine according to any one of claims 1 to 6, wherein,
the mold parameters include mold cavity pressure; the standard parameter ranges include standard mold cavity pressure ranges; the initial production process parameters comprise injection speed, injection pressure and dwell time;
the step of debugging the initial production process parameters based on preset parameter debugging rules comprises the following steps:
increasing the injection rate in response to determining that the slope of the pressure curve formed by the cavity pressure is lower than the slope of the standard pressure curve within the standard cavity pressure range;
increasing the injection pressure in response to determining that the slope of the pressure curve formed by the cavity pressure remains below the slope of the standard pressure curve after increasing the injection speed;
and adjusting the dwell time in response to determining that the integrated area of the pressure curve formed by the cavity pressure is less than the integrated area of the standard pressure curve.
8. The method for adjusting production process parameters of an injection molding machine according to claim 7, wherein,
The mold parameters further include a mold cavity temperature; the standard parameter range also comprises a standard die cavity temperature range; the initial production process parameters also comprise a holding pressure;
the step of debugging the initial production process parameters based on preset parameter debugging rules further comprises the following steps:
and increasing the holding pressure in response to determining that the highest point of the pressure curve formed by the mold cavity pressure is lower than the highest point of the standard pressure curve, or in response to determining that the highest point of the temperature curve formed by the mold cavity temperature is lower than the highest point of the standard temperature curve in the standard mold cavity temperature range.
9. An electronic device, comprising:
a processor; and
the memory is in communication connection with the processor;
wherein the memory stores a program executable by a processor, which when executed by the processor is capable of executing the debugging method of the injection molding machine production process parameter according to any one of claims 1 to 8.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when executed by a processor, implements a method for debugging production process parameters of an injection molding machine according to any one of claims 1 to 8.
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| CN117245873A (en) * | 2023-11-14 | 2023-12-19 | 广东美的制冷设备有限公司 | Method and device for determining initial technological parameters of injection molding machine and injection molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117245873A (en) * | 2023-11-14 | 2023-12-19 | 广东美的制冷设备有限公司 | Method and device for determining initial technological parameters of injection molding machine and injection molding machine |
| CN117245873B (en) * | 2023-11-14 | 2024-04-05 | 广东美的制冷设备有限公司 | Method and device for determining initial technological parameters of injection molding machine and injection molding machine |
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