CN116277838B - Control method for steel wire extrusion coating - Google Patents
Control method for steel wire extrusion coating Download PDFInfo
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- CN116277838B CN116277838B CN202310525572.0A CN202310525572A CN116277838B CN 116277838 B CN116277838 B CN 116277838B CN 202310525572 A CN202310525572 A CN 202310525572A CN 116277838 B CN116277838 B CN 116277838B
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- 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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- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
The invention discloses a control method for steel wire extrusion coating, which relates to the technical field of winding extrusion coating of a tire bead ring, and is mainly used as a control mode of the size of a rubber film in the coating operation of the tire bead ring, and mainly used for ensuring that the whole diameter of a steel wire coated with the rubber meets the production requirement.
Description
Technical Field
The invention relates to the technical field of winding extrusion coating of tire bead rings, in particular to a control method of steel wire extrusion coating.
Background
The bead ring is a rigid ring which is formed by arranging rubber-coated steel wires according to a certain section shape, and the bead ring has the function of endowing the bead with necessary strength and rigidity, so that the tire is firmly fixed on the rim, and in the preparation process, a rubber film with a certain thickness is covered on the bead ring, so that the wear resistance and the structural stability are improved, and the bead ring rubber coating action is: the steel wire of the bead ring winding machine is pulled out of the extruder by the traction machine, the steel wire is covered with a layer of rubber when passing through the extruder head filled with rubber, and the specific operation process can refer to the technical scheme disclosed in 2021-04-27 in the publication No. CN112705412A, and the case name of the bead ring winding machine is a bead wire coating device.
The quality of the coating is good or bad, the quality of the bead ring is greatly influenced, the pressure of the extruder head rubber, the speed of drawing out the steel wire, the temperature of the steel wire and the like have great relations on the coating effect, when the steel wire is coated with the rubber thin or not coated with the rubber, the bead ring is easy to scatter after the steel bead ring is formed, when the steel wire is coated with the rubber thick, the diameter of the steel wire is increased after the rubber is coated with the rubber, the wound bead ring is not orderly arranged, and the bead ring is in wire disorder, and a large amount of waste of steel wire raw materials can be caused in both cases.
The present application proposes a solution to the above technical problem.
Disclosure of Invention
The invention aims to provide a control method for steel wire extrusion coating, which is used for solving the problems that the coating quality is obviously different, the subsequent operation is influenced and the waste of steel wire raw materials is caused due to the fact that the current tire bead ring is subjected to the factors of extruder head rubber pressure, steel wire drawing speed, steel wire temperature and the like in the coating process.
The aim of the invention can be achieved by the following technical scheme: a control method for steel wire extrusion coating includes three parts of establishing a man-machine interaction interface, carrying out technological parameter simulation conversion and carrying out technological parameter correction, wherein an extruder and a tractor are used in the three parts, the tractor is used for drawing steel wires to move, and the extruder is used for executing coating action on the steel wires, and the control method specifically comprises the following steps:
establishing a human-computer interaction interface: a man-machine interaction interface is established at the external position of the extruder, the man-machine interaction interface comprises a data collection module, a data grading calculation module and a data grading end control module, the man-machine interaction interface is used for monitoring the operation conditions of the two parts of process parameter simulation conversion and process parameter correction, and the man-machine interaction interface has control authority of all actions in the process parameter simulation conversion and process parameter correction;
and (3) performing simulation conversion on the process parameters: the technological parameters in the technological parameter simulation conversion comprise the traction speed of the steel wire, the heating temperature of the steel wire, the output power of the extruder and the pressure in the extruding process of the extruder, the technological parameters are subjected to simulation conversion in the technological parameter simulation conversion, the calculation result of the simulation conversion is used as a data reference for judging whether the coating action can be executed, and the technological parameters meeting the requirements are input into the technological parameter correction;
and (3) correcting technological parameters: executing the glue coating action by using the process parameters output in the process parameter simulation conversion, performing diameter measurement action on the steel wire after the glue coating action, performing comparative analysis calculation according to the diameter measurement data and the production requirement, and executing three correction actions on the glue coating action in the process parameter simulation conversion according to the comparative analysis calculation result, wherein the three correction actions comprise: continuous laminating action, autonomous control action and human intervention regulation action.
Further provided is that: the extruder comprises a feeding pipe, a glue extruding variable frequency motor and a glue extruding machine feeding screw, wherein the glue extruding machine feeding screw is located inside the feeding pipe, the output end of the glue extruding variable frequency motor is connected with one end of the glue extruding machine feeding screw, one end of the feeding pipe is provided with a glue extruding machine head, a steel wire penetrates through the glue extruding machine head, and a grating ruler sensor, a temperature sensor, an electrode ring heating ring, a pressure sensor and an analog conversion module are respectively arranged outside the extruder.
Further provided is that: the traction moving direction of the steel wire is along the direction from the electrode ring heating ring to the grating ruler sensor, the direction of the steel wire along the glue extruding machine head, which is close to the electrode ring heating ring, is set to be a heating end, and the direction of the steel wire along the glue extruding machine head, which is close to the grating ruler sensor, is set to be a glue coating end.
Further provided is that: the probe of the pressure sensor is positioned in the rubber extruding machine head.
When the extruder executes the laminating action, the method specifically comprises the following steps:
step one: detecting by a grating ruler sensor to obtain the actual diameter of the steel wire after the glue coating action is completedDetecting the pressure value in the extruder head by a pressure sensor, and collecting the output power of the extruder by a data collecting module>Speed of travel of the wire->Steel wire heating temperature->Ideal diameter of steel wire after finishing the glue coating action +.>And will->、/>、/>、/>And->Is sent to a data hierarchy computation module, wherein +.>、/>、/>、/>The method comprises the steps of setting the output power of an extruder, the travelling speed of a steel wire, the heating temperature of the steel wire and the actual diameter of the steel wire after the rubber coating action at values corresponding to i, wherein i is a natural positive integer, i is calibrated to be a time unit min, i=1, 2 and … i+1, inputting technological parameters into a man-machine interaction interface for analog conversion, and marking the production requirement in the steel wire rubber coating action as heatin a data collection module>Wherein->Is the maximum error value in the production requirement, and +.>Is a fixed value;
step two: firstly, establishing a glue extrusion quantity by an analog quantity conversion moduleIs calculated according to the estimation formula: />Wherein is an estimation factor, and->Setting the steel wire coating quality grade level number of the coating completion in a data grading calculation module>Is calculated according to the formula: />Obtaining the grade level number of the steel wire coating colloid through calculation>And the steel wire is coated with colloid and the grade level is +.>Establishing a curve graph of the calculation results of (1), wherein +.>、/>、/>Is a relative variable constant value, < >>Is an absolute constant variable, combined with->Generating steel wire colloid quality grading data;
step three: the steel wire colloid coating quality grading data are sent to a data grading end control module, and the steel wire colloid coating quality grading data are divided into the following three running states:
operation state one: the measured data accords with the production requirement, and the glue coating action maintains the original technological parameters to execute the continuous glue coating action;
and the running state II: the measured data does not accord with the production requirement, the actual error of the measured data does not exceed the maximum error value in the production requirement, the autonomous control action is executed, and the measured data is combined for estimation, so that the process parameters are improved again through the autonomous control action;
and the running state is three: on the basis of the second running state, the actual error of the measured data exceeds the maximum error value in the production requirement, the glue coating action is temporarily interrupted, and the human intervention regulation action is executed.
Further provided is that: in step two, according toThe following steel wire coating rubber quality is set:
1) At the position ofSetting the quality of the steel wire coating as an excellent state in the state, and corresponding to the first operation state in the step three;
2) At the position ofOr->Setting the quality of the steel wire coating as a flaw state in the state, and corresponding to the second operation state in the third step;
3) At the position ofOr->In the state, the steel wire coating quality is set to be in an abnormal state, and the abnormal state corresponds to the third operation state in the third step.
Further provided is that: at the position ofIn (I)>The actual value of (2) comprises a positive number and a negative number, in +.>Calculated +.>< 1; at->Calculated +.>And in the second running state, the process of improving the process parameters by the autonomous control action comprises the following steps:
process one: at the position ofUnder the condition of less than 1, the coated steel wire shows insufficient thickness of the adhesive film, and the process parameters are +.>、/>、/>The following regulation and control are carried out:
s1: at the position of、/>And on the premise that the pressure value is kept unchanged, the steel wire travelling speed is reduced:；
s2: at the position of、/>And on the premise of maintaining the pressure value unchanged, improving the glue extrusion amount of the extruder:；
and a second process: at the position ofUnder the condition of more than 1, the steel wire with the coated steel wire is in a state that the thickness of the steel wire film exceeds the standard, and the steel wire is subjected to process parameters>、/>、/>The following regulation and control are carried out:
s3: at the position of、/>And on the premise of maintaining the pressure value unchanged, improving the travelling speed of the steel wire:；
s4: at the position of、/>And on the premise that the pressure value is kept unchanged, reducing the glue extrusion amount of the extruder:。
further provided is that: inputting the technological parameters obtained by regulation and control in the first process and the second process into a human-computer interaction interface, carrying out simulation conversion, and selecting technological parameters meeting the requirements according to the calculation result of the simulation conversion.
The invention has the following beneficial effects:
1. the invention aims at the rubber coating action in the rubber coating operation of the steel wire ring of the tire, mainly takes the diameter of the steel wire after the rubber coating is finished as an absolute constant value variable, and calculates the diameter of the steel wire obtained by the detection of a grating ruler sensor to obtain the grade level of the rubber coating quality of the steel wireAccording to the->Numerical value, judging the coating quality of the steel wire in the coating action, specifically dividing the coating quality into an excellent state, a flaw state and an abnormal state, and combining the excellent state, the flaw state and the abnormal state into +.>A curve diagram is established, then the glue covering action condition can be intuitively displayed on a man-machine interaction interface, and continuous glue covering action or autonomous control action can be executed according to the glue covering state of the steel wire, so that the purpose of reversely controlling the glue covering action is achieved;
2. in the autonomous control action, reuse toThe process parameters combined into the laminating operation are selected, one of the process parameters is used as a relative variable, and the other process parameters are used as relative fixed values according to ∈>The process parameters which are used as relative variables are regulated and controlled, and the regulated process parameters are converted in a re-simulation mode under different states, so that the process parameters which can execute the glue coating action are selected from a plurality of groups of regulated process parameters, and the glue coating action is executed again according to the regulated process parameters.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an extruder in a control method of steel wire extrusion coating according to the present invention;
fig. 2 is a system block diagram of a control method for steel wire extrusion coating according to the present invention;
FIG. 3 is a process flow diagram of a method for controlling extrusion coating of steel wire according to the present invention;
fig. 4 is a graph showing a control method of steel wire extrusion coating according to the present invention.
In the figure: 1. a grating ruler sensor; 2. the glue extruding machine head; 3. a temperature sensor; 4. an electrode ring heating ring; 5. a pressure sensor; 6. an analog quantity conversion module; 7. a glue-squeezing variable frequency motor; 8. feeding screw rod of glue extruder; 9. and a feeding pipe.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.
Example 1
For the rubber coating process of the bead ring of the tire, the quality of the rubber coating is good, the quality influence on the bead ring is large, if the bead ring is thin or not coated, the bead ring is easy to scatter after being molded, when the bead ring is thick, the diameter of the bead ring is enlarged after being coated, the wound bead ring is not orderly arranged, and the bead ring is disordered, and a large amount of waste of steel wire raw materials can be caused under both conditions, so that the following technical scheme is provided:
referring to fig. 2, 3 and 4, the control method for extruding and coating a steel wire in this embodiment includes three parts including establishment of a man-machine interface, simulation conversion of technological parameters, and correction of technological parameters, wherein an extruder and a tractor are used in the three parts to draw the steel wire to move, and the extruder is used to perform a coating action on the steel wire, and specifically includes the following steps:
establishing a human-computer interaction interface: a man-machine interaction interface is established at the external position of the extruder, the man-machine interaction interface comprises a data collection module, a data grading calculation module and a data grading end control module, the man-machine interaction interface is used for monitoring the operation conditions of the two parts of process parameter simulation conversion and process parameter correction, and the man-machine interaction interface has control authority of all actions in the process parameter simulation conversion and process parameter correction;
and (3) performing simulation conversion on the process parameters: the technological parameters in the technological parameter simulation conversion comprise the traction speed of the steel wire, the heating temperature of the steel wire, the output power of the extruder and the pressure in the extruding process of the extruder, the technological parameters are subjected to simulation conversion in the technological parameter simulation conversion, the calculation result of the simulation conversion is used as a data reference for judging whether the coating action can be executed, and the technological parameters meeting the requirements are input into the technological parameter correction;
and (3) correcting technological parameters: executing the glue coating action by using the process parameters output in the process parameter simulation conversion, performing diameter measurement action on the steel wire after the glue coating action, performing comparative analysis calculation according to the diameter measurement data and the production requirement, and executing three correction actions on the glue coating action in the process parameter simulation conversion according to the comparative analysis calculation result, wherein the three correction actions comprise: continuous laminating action, autonomous control action and human intervention regulation action.
When the extruder executes the laminating action, the method specifically comprises the following steps:
step one: the actual diameter of the steel wire after the glue coating action is detected by a grating ruler sensor 1The pressure value in the extruding machine head 2 is detected by a pressure sensor 5, and the output power of the extruding machine is collected by a data collecting module>Speed of travel of the wire->Steel wire heating temperature->Ideal diameter of steel wire after finishing the glue coating action +.>And will->、、/>、/>And->Is sent to a data hierarchy computation module, wherein +.>、/>、/>、/>The method comprises the steps of setting the output power of an extruder, the travelling speed of a steel wire, the heating temperature of the steel wire and the actual diameter of the steel wire after the rubber coating action at values corresponding to i, wherein i is a natural positive integer, i is calibrated to be a time unit min, i=1, 2 and … i+1, inputting technological parameters into a man-machine interaction interface for analog conversion, and marking the production requirement in the steel wire rubber coating action as heatin a data collection module>Wherein->Is the maximum error value in the production requirement, and +.>Is a fixed value;
step two: firstly, an analog quantity conversion module 6 is used for establishing the glue extrusion quantityIs calculated according to the estimation formula: />Wherein->Is an estimation factor, and->Setting the steel wire coating quality grade level number of the coating completion in a data grading calculation module>Is calculated according to the formula: />Obtaining the grade level of the steel wire coating colloid quality through calculationAnd the steel wire is coated with colloid and the grade level is +.>Establishing a curve graph of the calculation results of (1), wherein +.>、/>、/>Is a relative variable constant value, < >>Is an absolute constant variable, combined with->Generating steel wire colloid quality grading data;
step three: the steel wire colloid coating quality grading data are sent to a data grading end control module, and the steel wire colloid coating quality grading data are divided into the following three running states:
operation state one: the measured data accords with the production requirement, and the glue coating action maintains the original technological parameters to execute the continuous glue coating action;
and the running state II: the measured data does not accord with the production requirement, the actual error of the measured data does not exceed the maximum error value in the production requirement, the autonomous control action is executed, and the measured data is combined for estimation, so that the process parameters are improved again through the autonomous control action;
and the running state is three: on the basis of the second running state, the actual error of the measured data exceeds the maximum error value in the production requirement, the glue coating action is temporarily interrupted, and the human intervention regulation action is executed.
Operation principle: the whole scheme is based on the technical principle in the operation of winding, extruding and coating rubber by using a tire bead ring, after heating a steel wire, the solid rubber material is concentrated on a certain position on the steel wire, then the solid rubber material is melted and attached on the steel wire, after cooling and solidifying, a rubber film with a corresponding thickness is formed, and the specific rubber film size depends on the specifications of different tire bead rings and is not described more herein;
in a specific control manner, referring to fig. 3, technological parameters in the glue coating operation are preset, such technological parameters are taken as initial technological parameters in the glue coating operation of the steel wire, then the glue coating quality of the steel wire is determined according to the measured data by measuring the glue film size of the finished glue coating, and the glue coating quality is taken as a means for reversely controlling the glue coating operation, compared with the current glue coating operation, a man-machine interaction interface needs to be established in advance, and the purpose is that: the control authority of all actions in the process parameter simulation conversion and process parameter correction can be directly obtained, then an operator can monitor the whole situation of the laminating action according to the man-machine interaction interface, in addition, the man-machine interaction interface is used as a total control end for the process parameter simulation conversion and process parameter correction, and the purpose of controlling the laminating action is achieved according to the above description.
Example two
The extruder structure in the first embodiment is described as follows:
referring to fig. 1, the extruder in this embodiment includes a feeding pipe 9, a glue extrusion variable frequency motor 7 and a glue extrusion machine feeding screw 8, the glue extrusion machine feeding screw 8 is located inside the feeding pipe 9, and the output end of the glue extrusion variable frequency motor 7 is connected with one end of the glue extrusion machine feeding screw 8, one end of the feeding pipe 9 is provided with a glue extrusion machine head 2, a steel wire passes through the glue extrusion machine head 2, a grating ruler sensor 1, a temperature sensor 3, an electrode ring heating ring 4, a pressure sensor 5 and an analog conversion module 6 are respectively arranged outside the extruder, the traction movement direction of the steel wire is along the direction from the electrode ring heating ring 4 to the grating ruler sensor 1, the direction of the steel wire along the direction from the glue extrusion machine head 2 to the electrode ring heating ring 4 is set to be a heating end, the direction from the steel wire along the direction from the glue extrusion machine head 2 to the grating ruler sensor 1 is set to be a glue coating end, and the probe position of the pressure sensor 5 is located inside the glue extrusion machine head 2.
The structure has the advantages that: in the rubber coating process of the traditional tire bead ring, the grating ruler sensor 1 is mainly used for detecting and obtaining diameter data after the rubber coating action is completed, and the diameter data is used as a precursor part for realizing the first embodiment, so that the rubber coating process can be better monitored and supervised without sampling and detecting the bead ring obtained after the rubber coating is completed according to the traditional rubber coating action, and the detection process and the rubber coating process are in a synchronous state.
Example III
The embodiment is to make the following optimization and improvement on the regulation and control process of the technological parameters:
according toThe following steel wire coating rubber quality is set:
1) At the position ofSetting the quality of the steel wire coating as an excellent state in the state, and corresponding to the first operation state in the step three;
2) At the position ofOr->Setting the quality of the steel wire coating as a flaw state in the state, and corresponding to the second operation state in the third step;
3) At the position ofOr->In the state, the steel wire coating quality is set to be in an abnormal state, and the abnormal state corresponds to the third operation state in the third step.
At the position ofIn (I)>The actual value of (2) comprises a positive number and a negative number, in +.>Calculated +.>< 1; at->Calculated +.>And in the second running state, the process of improving the process parameters by the autonomous control action comprises the following steps:
process one: at the position ofUnder the condition of less than 1, the coated steel wire shows insufficient thickness of the adhesive film, and the process parameters are +.>、/>、/>The following regulation and control are carried out:
s1: at the position of、/>And on the premise that the pressure value is kept unchanged, the steel wire travelling speed is reduced:；
s2: at the position of、/>The pressure value remains unchangedOn the premise of improving the glue extrusion amount of the extruder:；
and a second process: at the position ofUnder the condition of more than 1, the steel wire with the coated steel wire is in a state that the thickness of the steel wire film exceeds the standard, and the steel wire is subjected to process parameters>、/>、/>The following regulation and control are carried out:
s3: at the position of、/>And on the premise of maintaining the pressure value unchanged, improving the travelling speed of the steel wire:；
s4: at the position of、/>And on the premise that the pressure value is kept unchanged, reducing the glue extrusion amount of the extruder:。
inputting the technological parameters obtained by regulation and control in the first process and the second process into a human-computer interaction interface, carrying out simulation conversion, and selecting technological parameters meeting the requirements according to the calculation result of the simulation conversion.
The technical advantages are that: in combination with the operation process in implementation one, the technical scheme in the embodiment is subdivided, and as for the operation state one, the steel wire coating quality in the state is in an excellent state, so that autonomous control is not needed, as for the operation state three, the problem of material clamping or the difficulty in continuous temperature rising which possibly occurs under long-term operation in the coating process is mainly solved, and at the moment, the coating action is needed to be temporarily interrupted by human intervention;
the important point is the second running state, in which the coated steel wire has a certain flaw, and therefore, specific data measured by the grating ruler sensor 1, such asIs->The actual values of (a) comprise positive and negative numbers, so that on the premise of meeting the production requirement, the defect part is required to be compensated, in particular to +_in the process parameters>、/>In the course of maintaining->And the pressure value is unchanged, for ∈K>And->The fine tuning is performed by referring to +.>Specifically, the contents in S1 to S4 are separated, four groups of fine-tuned process parameters can be obtained, and the following needs to be described: wherein->Is->As an estimation factor, in this embodiment, the fixed value is specifically determined according to the feeding screw 8 of the extruder, for example: when the glue squeezing variable frequency motor 7 drives the glue squeezing machine feeding screw rod 8 to rotate for feeding in a uniform speed state, the raw materials fed in unit time can be converted into +.>；
In combination with the above, and referring to fig. 3, it is further required to perform a re-simulation conversion on the four sets of fine-tuned process parameters, so as to screen out the process parameters capable of performing the glue coating action, re-perform the glue coating action with the process parameters, and re-perform the glue coating action to obtain the glue coating quality of the steel wire for performing a rinsing process parameter correction.
To sum up: as a control mode of the glue film size in the glue coating operation of the steel wire ring of the tire, the method is mainly used for ensuring that the whole diameter of the steel wire after glue coating is finished meets the production requirement, the whole diameter of the steel wire after glue coating is detected by a grating ruler sensor as a technical premise in the whole scheme, a calculation formula of the grade level of the glue coating quality of the steel wire is built according to the detected diameter data, a finished curve diagram is built first, the glue coating quality in the glue coating action can be intuitively displayed and obtained, and the glue coating quality is combined, the process parameters in the glue coating action are graded end holes, and particularly, one of the process parameters is adjusted and corrected, so that the problem of excessive material waste is avoided in the continuous glue coating process is ensured.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. The control method for the steel wire extrusion coating is characterized by comprising three parts of establishing a human-computer interaction interface, carrying out process parameter simulation conversion and carrying out process parameter correction, wherein an extruder and a tractor are used in the three parts, the tractor is used for drawing the steel wire to move, and the extruder is used for executing the coating action on the steel wire, and the control method specifically comprises the following steps:
establishing a human-computer interaction interface: a man-machine interaction interface is established at the external position of the extruder, the man-machine interaction interface comprises a data collection module, a data grading calculation module and a data grading end control module, the man-machine interaction interface is used for monitoring the operation conditions of the two parts of process parameter simulation conversion and process parameter correction, and the man-machine interaction interface has control authority of all actions in the process parameter simulation conversion and process parameter correction;
and (3) performing simulation conversion on the process parameters: the technological parameters in the technological parameter simulation conversion comprise the traction speed of the steel wire, the heating temperature of the steel wire, the output power of the extruder and the pressure in the extruding process of the extruder, the technological parameters are subjected to simulation conversion in the technological parameter simulation conversion, the calculation result of the simulation conversion is used as a data reference for judging whether the coating action can be executed, and the technological parameters meeting the requirements are input into the technological parameter correction;
and (3) correcting technological parameters: executing the glue coating action by using the process parameters output in the process parameter simulation conversion, performing diameter measurement action on the steel wire after the glue coating action, performing comparative analysis calculation according to the diameter measurement data and the production requirement, and executing three correction actions on the glue coating action in the process parameter simulation conversion according to the comparative analysis calculation result, wherein the three correction actions comprise: continuous laminating action, autonomous control action and human intervention regulation action;
when the extruder executes the laminating action, the method specifically comprises the following steps:
step one: detecting the actual diameter Di of the steel wire after the glue coating action is finished by using a grating ruler sensor (1), detecting the pressure value in a glue extruding machine head (2) by using a pressure sensor (5), collecting the output power Pi of an extruder, the advancing speed Vi of the steel wire, the heating temperature Ti of the steel wire and the ideal diameter D of the steel wire after the glue coating action is finished by using a data collecting module, and sending Pi, vi, ti, di and D to a data grading calculation module, wherein Pi, vi, ti, di is the value of the output power of the extruder, the advancing speed of the steel wire, the heating temperature of the steel wire and the actual diameter of the steel wire after the glue coating action at a corresponding i, i is a natural positive integer, i is calibrated as a time unit min, i=1, 2, 3 … i+1, inputting process parameters into a man-machine interaction interface for analog conversion, and marking the production requirement in the steel wire glue coating action as D+/-r in the data collecting module, wherein r is the maximum error value in the production requirement, and r is a fixed value;
step two: firstly, an estimation formula of the glue extrusion quantity Gi is established by an analog quantity conversion module (6): gi=pi×k, where k is an estimation factor and k is a constant value, and then establishing a calculation formula of the steel wire coating quality grade level number F (i) after coating is completed in the data grading calculation module: f (i) =1+ (Di-D)/D, obtaining a steel wire colloid coating quality grade level number F (i) through calculation, and establishing a curve diagram according to the calculation result of the steel wire colloid coating quality grade level number F (i), wherein Gi, vi and Ti are relative variable constant values, di is an absolute constant value variable, and the steel wire colloid coating quality grade data are generated by combining a calculation formula of F (i);
step three: the steel wire colloid coating quality grading data are sent to a data grading end control module, and the steel wire colloid coating quality grading data are divided into the following three running states:
operation state one: the measured data accords with the production requirement, and the glue coating action maintains the original technological parameters to execute the continuous glue coating action;
and the running state II: the measured data does not accord with the production requirement, the actual error of the measured data does not exceed the maximum error value in the production requirement, the autonomous control action is executed, and the measured data is combined for estimation, so that the process parameters are improved again through the autonomous control action;
and the running state is three: on the basis of the second running state, the actual error of the measured data exceeds the maximum error value in the production requirement, the glue coating action is temporarily interrupted, and the human intervention regulation action is executed;
in F (i) =1+ (Di-D)/D, the actual value of Di-D contains a positive number and a negative number, and when Di < D, the calculated F (i) < 1; when Di > D, F (i) > 1 is calculated, and in the second running state, the process of improving the process parameters by the autonomous control action comprises the following steps:
process one: under the condition that F (i) is less than 1, the coated steel wire presents insufficient thickness of a glue film, and the following regulation and control are carried out on technological parameters Gi, vi and Ti:
s1: on the premise that the values of Gi, ti and pressure are kept unchanged, the travelling speed of the steel wire is reduced: v (i+1) =vi×f (i);
s2: on the premise that Vi, ti and pressure values are kept unchanged, the glue extrusion amount of the extruder is increased: g (i+1) = (1+F (i)) Gi;
and a second process: under the condition that F (i) is more than 1, the coated steel wire presents a state that the thickness of a glue film exceeds the standard, and the following regulation and control are carried out on technological parameters Gi, vi and Ti:
s3: on the premise that the values of Gi, ti and pressure are kept unchanged, the travelling speed of the steel wire is improved: v (i+1) =vi×f (i);
s4: on the premise that Vi, ti and pressure values are kept unchanged, the extruding glue amount of the extruder is reduced: g (i+1) =gi (F (i) -1).
2. The control method for steel wire extrusion coating according to claim 1, wherein the extruder comprises a feeding pipe (9), an extrusion coating variable frequency motor (7) and an extrusion coating machine feeding screw (8), the extrusion coating machine feeding screw (8) is positioned in the feeding pipe (9), the output end of the extrusion coating variable frequency motor (7) is connected with one end of the extrusion coating machine feeding screw (8), one end of the feeding pipe (9) is provided with an extrusion coating machine head (2), the steel wire penetrates through the extrusion coating machine head (2), and a grating ruler sensor (1), a temperature sensor (3), an electrode ring heating ring (4), a pressure sensor (5) and an analog conversion module (6) are respectively arranged outside the extruder.
3. The control method for extruding and coating steel wires according to claim 2, wherein the traction moving direction of the steel wires is along the direction from the electrode ring heating ring (4) to the grating ruler sensor (1), the direction from the rubber extruding machine head (2) to the electrode ring heating ring (4) is set as a heating end, and the direction from the rubber extruding machine head (5) to the grating ruler sensor (1) is set as a coating end.
4. The control method of steel wire extrusion coating according to claim 2, characterized in that the probe position of the pressure sensor (5) is located inside the extrusion head (2).
5. The method according to claim 1, wherein in the second step, the following steel wire coating quality is set according to F (i) =1+ (Di-D)/D:
1) Setting the steel wire coating quality to be in a good state in the state (D-r/3) < Di < (D+r/3), corresponding to the first operation state in the step three;
2) Setting the quality of the steel wire coating as a flaw state in the state that (D-r) is less than Di < (D-r/3) or (D+r/3) is less than Di < (D+r), and corresponding to the second operation state in the third step;
3) And setting the steel wire coating quality as an abnormal state in the Di < (D-r) or Di > (D+r) state, which corresponds to the running state III in the step III.
6. The method for controlling the extrusion coating of the steel wire according to claim 1, wherein the technological parameters obtained by regulation and control in the first process and the second process are input into a man-machine interaction interface for analog conversion, and the technological parameters meeting the requirements are selected according to the calculation result of the analog conversion.
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