CN113681955B - System and method for precisely controlling size of rubber strip in tread winding - Google Patents
System and method for precisely controlling size of rubber strip in tread winding Download PDFInfo
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- CN113681955B CN113681955B CN202111026761.0A CN202111026761A CN113681955B CN 113681955 B CN113681955 B CN 113681955B CN 202111026761 A CN202111026761 A CN 202111026761A CN 113681955 B CN113681955 B CN 113681955B
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- adhesive tape
- control unit
- rubber
- size
- feedback control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
- B29D2030/3064—Details, accessories and auxiliary operations not otherwise provided for
Abstract
The invention discloses a system and a method for accurately controlling the size of a rubber strip in tread winding, wherein a pressure sensor arranged on an extruder head of an extruder head pressure feedback control unit is connected with a PLC (programmable logic controller) I through a signal line to adjust the rotating speed of an extrusion screw; the molding press of the molding press adhesive tape size feedback control unit comprises an upper molding roller, a lower molding roller and a high-precision line laser measuring instrument which is connected with a PLC (programmable logic controller) II through a signal line so as to adjust the rotating speed of the lower molding roller; in the adhesive tape tension constant control unit in the adhesive tape conveying process, suspension type speed matching mechanisms are arranged between the front and rear module belt type adhesive tape conveyers and the profiling machine, ultrasonic sensors I and II are arranged corresponding to the suspension type speed matching mechanisms, and the ultrasonic sensors are connected with a PLC (programmable logic controller) III through signal lines to control the conveying speed of the adhesive tape; the cooperation of the control units can keep the rubber strips stable in size in the extrusion, profiling and conveying processes.
Description
Technical Field
The invention relates to a tire manufacturing technology, in particular to a system and a method for precisely controlling the size of a rubber strip in tread winding.
Background
The tire tread winding process is an important step in the production of tires (particularly for large tires and giant tires), and tread winding is the most preferable production process at the present stage due to the particularly large tread size and weight.
Tread winding is to wind a rubber strip around a tire carcass in a specific track to finally obtain a desired tread shape and size. It can be seen that the dimensional accuracy of the rubber strip itself will greatly affect the dimensional accuracy of the formed tread during the tread winding process.
The conventional process requires that the dimensional accuracy error of the finally formed tread is less than 1% of the standard value, and the dimensional accuracy error of the rubber strip during winding is required to be less than 0.3% to meet the requirement through mathematical calculation.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the technical problem of providing a system and a method for accurately controlling the size of a rubber strip in tread winding, which meet the requirements of a production process.
The accurate control system of rubber adhesive tape size in the tread winding that can solve above-mentioned technical problem, its technical scheme includes extruder aircraft nose pressure feedback control unit, profiling machine adhesive tape size feedback control unit and adhesive tape conveying process adhesive tape tension constant control unit, wherein:
1. the extruder head pressure feedback control unit comprises an extruder, a pressure sensor is arranged on the extruder head of the extruder, and the pressure sensor is connected with a PLC programmable controller I capable of adjusting the extrusion screw speed of the extruder in real time through a signal line.
2. The molding press adhesive tape width feedback control unit comprises a molding press, the molding press comprises an upper molding roller and a lower molding roller, and further comprises a high-precision line laser measuring instrument for measuring the section size of the rubber adhesive tape, wherein the high-precision line laser measuring instrument is connected with a PLC (programmable logic controller) II for controlling a servo motor and a driver through a signal line, and the servo motor and the driver are connected with the upper molding roller and the lower molding roller through a precise transmission mechanism.
3. The adhesive tape tension constant control unit comprises at least two servo-driven module belt adhesive tape conveyors arranged in the front and back of the extrusion direction, suspension type speed matching mechanisms are arranged between the front module belt adhesive tape conveyor and the back module belt adhesive tape conveyor and between the back module belt adhesive tape conveyor and the profiling machine, ultrasonic sensors I and II for detecting suspension length of the adhesive tape are respectively arranged corresponding to the suspension type speed matching mechanisms in the front and back, and each ultrasonic sensor is connected with a PLC programmable controller III capable of respectively controlling conveying speed of a conveying belt of the front and back module belt adhesive tape conveyor through corresponding signal lines.
The device also comprises a total control unit which cooperates with the extruder head pressure feedback control unit, the profiling machine adhesive tape size feedback control unit and the adhesive tape tension constant control unit in the adhesive tape conveying process to operate so as to keep the size of the rubber adhesive tape stable in the extrusion, profiling and conveying processes.
Further, the press gap between the upper press roller and the lower press roller is adjusted to be smaller than 0.8mm, and correspondingly, a high-precision line laser measuring instrument with the measuring precision smaller than 0.02mm can be selected to be matched with the press gap.
In tread winding, the method for controlling the size precision of the rubber strip by adopting the accurate control system for the size of the rubber strip in tread winding comprises the following steps:
1. the dimensional accuracy of the rubber strip extruded from the extruder head is controlled to be +/-1% through the extruder head pressure feedback control unit.
2. The rubber strip width feedback control unit of the molding press is used for further controlling the size precision of the rubber strip with the size precision controlled to +/-1% to be within 0.1%.
3. The constant control unit of the adhesive tape tension in the adhesive tape conveying process realizes that the dimensional accuracy of the adhesive tape with the dimensional accuracy of not more than 0.1% after profiling is controlled within 0.12% during conveying, thereby meeting the process requirement that the tread dimensional accuracy error is less than 1% of a standard value during winding.
4. The desirable dimension of the rubber strip which is stable all the time in the whole process of extrusion, profiling and conveying is realized through the cooperative control of the total control unit.
The invention has the beneficial effects that:
according to the system and the method for precisely controlling the size of the rubber strip in the tread winding, the rubber strip size wound on the tire carcass is always stabilized to be less than 0.12% by the cooperative operation of the pressure feedback control of the extruder head, the rubber strip size feedback control of the molding press and the constant tension control of the rubber strip in the conveying process, and the requirement of the conventional process is far lower than 0.3%, so that the production process requirement is met.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a constant tension control unit for the adhesive tape during the adhesive tape conveying process in the embodiment of fig. 1.
Drawing number identification: 1. an extruder; 1-1, an extruder head; 2. a molding press; 2-1, pressing a roller; 2-2, pressing down the roller; 2-3, a high-precision line laser tester; 3. a front modular belt conveyor for adhesive tape; 4. a rear module belt type adhesive tape conveyor; 5. an ultrasonic sensor I; 6. an ultrasonic sensor II; 7. a rubber strip; 8. a pressure sensor.
Detailed Description
The technical scheme of the invention is further described below with reference to the embodiment shown in the drawings.
The invention discloses a precise control system for rubber strip size in tread winding, which comprises an extruder head pressure feedback control unit, a profiling machine strip width feedback control unit, a strip tension constant control unit in the strip conveying process and a total control unit for cooperation of the control units.
The extruder head pressure feedback control unit comprises a pin type extruder 1, a pressure sensor 8 is arranged on an extruder head 1-1 of the extruder 1, the pressure sensor 8 is connected with a PLC (programmable logic controller) I through a signal line, and the PLC I adjusts the rotating speed of an extrusion screw of the extruder 1 in real time according to pressure feedback information of the pressure sensor 8, so that the extrusion speed of a rubber strip 7 is controlled, as shown in figure 1.
The molding press adhesive tape size feedback control unit comprises a molding press 2, the molding press comprises an upper molding roller 2-1 and a lower molding roller 2-2 which are connected with a precise transmission mechanism, the upper molding roller 2-1 can move up and down to adjust a press gap, the precise transmission mechanism is driven by a servo motor and a driver, the molding press further comprises a high-precision line laser measuring instrument 2-3 for measuring the cross section size of a rubber adhesive tape 7 (pressed by the upper molding roller 2-1 and the lower molding roller 2-2), the high-precision line laser measuring instrument 2-3 is connected with a PLC (programmable logic controller) II through a signal line, and the PLC II controls the operation of the servo motor and the driver according to the size measurement feedback information of the high-precision line laser measuring instrument 2-3, as shown in figure 1.
In the structure, the press gap between the upper press roller 2-1 and the lower press roller 2-2 can be adjusted to be smaller than 0.8mm according to the process requirement, and a high-precision line laser measuring instrument 2-3 with measuring precision smaller than 0.02mm is needed to be adopted for matching, as shown in fig. 1.
The rubber strip tension constant control unit in the rubber strip conveying process comprises a front module belt type rubber strip conveyor 3 and a rear module belt type rubber strip conveyor 4 which are respectively arranged along the extrusion direction, suspension type speed matching mechanisms are respectively arranged between the front module belt type rubber strip conveyor 3 and the rear module belt type rubber strip conveyor 4 and between the rear module belt type rubber strip conveyor 4 and the profiling machine 2, ultrasonic sensors I5 and II 6 for detecting the suspension length of the rubber strip 7 are respectively arranged below the front suspension type speed matching mechanism and the rear suspension type speed matching mechanism, each ultrasonic sensor is connected with a PLC programmable controller III through a corresponding signal line, and the PLC programmable controller III respectively controls the conveying speeds of conveying belts of the front module belt type rubber strip conveyor 3 and the rear module belt type rubber strip conveyor 4 according to the suspension length feedback information of the rubber strip 7 of each ultrasonic sensor, as shown in fig. 1 and 2.
The module belt type adhesive tape conveyor is characterized in that a conveyor belt cannot deviate, a driving wheel cannot slip from the conveyor belt, the conveyor belt is small in adhesion with the rubber adhesive tape 7, servo driving is configured, and the dimensional accuracy change of conveying the rubber adhesive tape 7 can be controlled within 5%.
The total control unit cooperates with the extruder head pressure feedback control unit, the profiling machine adhesive tape width feedback control unit and the adhesive tape tension constant control unit in the adhesive tape conveying process to maintain the dimensional stability of the rubber adhesive tape 7 in the extrusion, profiling and conveying processes.
Taking the tread winding of the rubber strip 7 with the molding thickness of 0.8mm as an example, the technical scheme of the method for precisely controlling the size of the rubber strip in the tread winding is described:
1. the pressure feedback control scheme of the extruder head pressure feedback control unit is as follows:
the dimensional accuracy of the rubber strip 7 extruded from the extruder head 1-1 is controlled to be 0.8mm + -1% by an extruder head pressure feedback control unit.
The rubber pressure value in the extruder head 1-1 can be measured in real time through the pressure sensor arranged on the extruder head 1-1 and fed back to the PLC I, and the PLC I adjusts the screw speed in real time so as to stabilize the pressure in the extruder head 1-1 at a set value; by controlling in this way, it is possible to ensure that the dimensional accuracy of the rubber strip 7 extruded from the die of the extruder head 1-1 is stabilized at 0.8 mm.+ -. 1%.
2. The measuring feedback control scheme of the molding press adhesive tape width feedback control unit is as follows:
the size accuracy of the rubber strip 7 with the size accuracy controlled to be 0.8mm plus or minus 1% after extrusion is further controlled to be within 0.1% by a rubber strip size feedback control unit of the molding press.
The servo motor and the driver precisely drive the rotation speed of the upper and lower profiling rollers 2-2 through a precise transmission system.
The upper profiling roller 2-1 and the lower profiling roller 2-2 profiling the extruded rubber strip 7 into the rubber strip 7 meeting the requirements of shape, thickness and width, and the rotation degree of the upper profiling roller 2-2 is controlled by feeding back the measurement of the high-precision line laser measuring instrument 2-3 to the PLC programmable controller II, so that the rubber strip 7 with the dimensional precision stabilized within 0.8mm plus or minus 1% can be further stabilized within 0.1%.
3. The measurement feedback control scheme of the adhesive tape tension constant control unit in the adhesive tape conveying process is as follows:
the constant control unit of the adhesive tape tension in the adhesive tape conveying process realizes that the dimensional accuracy of the adhesive tape 7 which is not more than 0.1% of the dimensional accuracy after profiling is finally controlled within 0.12% in the conveying process.
The ultrasonic sensor I5 and the ultrasonic sensor II 6 feed detected adhesive tape hanging data back to the PLC (programmable logic controller) III, and the PLC III controls the speed difference between the conveying of the adhesive tape 7 on the front and rear module belt type adhesive tape conveyors 3 and 4 so as to achieve the complete matching of the linear speeds of the two, thereby realizing that the dimensional accuracy of the rubber adhesive tape 7 which is not more than 0.1% of the dimensional accuracy after profiling is controlled to be not more than 0.12% when the rubber adhesive tape 7 is finally conveyed to a winding head.
4. The overall control unit cooperatively controls the speed matching between the extruder 1 and the profiling machine 2, between the profiling machine 2 and the conveyor belt of the rear module belt type adhesive tape conveyor 4, and between the conveyor belts of the front and rear module belt type adhesive tape conveyors 3, 4, so as to realize that the rubber adhesive tape 7 always maintains stable and desirable size in the whole process from extrusion, profiling to conveying to the winding head.
Claims (1)
1. The accurate control method for the rubber adhesive tape size in the tread winding adopts an accurate control system for the rubber adhesive tape size in the tread winding, the accurate control system for the rubber adhesive tape size in the tread winding comprises an extruder head pressure feedback control unit, a profiling machine adhesive tape size feedback control unit and an adhesive tape tension constant control unit in the adhesive tape conveying process, the extruder head pressure feedback control unit comprises an extruder (1), a pressure sensor (8) is arranged on an extruder head (1-1) of the extruder (1), the pressure sensor (8) is connected with a Programmable Logic Controller (PLC) capable of adjusting the extrusion screw rotating speed of the extruder (1) in real time through a signal line, the dimensional accuracy of a rubber adhesive tape (7) extruded from the extruder head (1-1) is controlled to be +/-1%, the profiling machine adhesive tape size feedback control unit comprises a profiling machine (2), the profiling machine comprises an upper profiling roller (2-1) and a lower profiling roller (2-2), the high-3) is further comprises a high-accuracy line laser measuring instrument (2-3) for measuring the section size of the rubber adhesive tape, the high-accuracy line laser measuring instrument (2-3) is connected with a control servo motor and a driver through the signal line, the programmable logic controller is connected with a servo motor and the driver can be connected with the servo motor (2-2) and the servo motor (2-2) to realize the accurate control of the extruding accuracy of the rubber adhesive tape (7) from the extrusion roller (1-1) to the extrusion roller (1) through the servo motor and the servo motor (2-2), the measuring precision of the high-precision linear laser measuring instrument (2-3) is less than 0.02mm, the adhesive tape tension constant control unit in the adhesive tape conveying process comprises at least two servo-driven module belt adhesive tape conveyers arranged at the front and the back along the extrusion direction, suspension type speed matching mechanisms are respectively arranged between the front module belt adhesive tape conveyer (3) and the back module belt adhesive tape conveyer (4) and between the back module belt adhesive tape conveyer (4) and the profiling machine (2), ultrasonic sensors I (5) and II (6) for detecting the suspension length of the adhesive tape are respectively arranged corresponding to the suspension type speed matching mechanisms at the front and the back, each ultrasonic sensor is connected with a PLC programmable controller III capable of respectively controlling the conveying speed of the adhesive tape on the front module belt adhesive tape conveyer (3) and the back module belt adhesive tape conveyer (4) through corresponding signal lines, the module belt type adhesive tape conveyor is characterized in that a conveyor belt cannot deviate, a driving wheel and the conveyor belt cannot slip, the conveyor belt is small in adhesion with a rubber adhesive tape (7), servo driving is configured, the change of the dimensional accuracy of the conveying of the rubber adhesive tape (7) can be controlled within 5%, the module belt type adhesive tape conveyor further comprises a coordinated extruder head pressure feedback control unit, a profiling machine adhesive tape width feedback control unit and an adhesive tape tension constant control unit operation in the adhesive tape conveying process so as to keep the overall control unit of the dimensional stability of the rubber adhesive tape (7) in the extruding, profiling and conveying processes, and the module belt type adhesive tape conveyor is characterized in that the scheme for controlling the dimensional accuracy of the rubber adhesive tape with the molding thickness of 0.8mm is as follows:
(1) the pressure feedback control scheme of the extruder head pressure feedback control unit is as follows:
the dimensional accuracy of the rubber strip (7) extruded from the extruder head (1-1) is controlled to be 0.8mm +/-1% through an extruder head pressure feedback control unit;
the numerical value of the rubber pressure in the extruder head (1-1) can be measured in real time through the pressure sensor arranged on the extruder head (1-1) and fed back to the PLC I, the PLC I adjusts the screw speed in real time to stabilize the internal pressure of the extruder head (1-1) at a set numerical value, and the dimensional accuracy of the rubber strip (7) extruded from the die of the extruder head (1-1) can be ensured to be stabilized at 0.8mm plus or minus 1% through the control;
(2) the measuring feedback control scheme of the molding press adhesive tape width feedback control unit is as follows:
the size accuracy of the rubber adhesive tape (7) with the size accuracy controlled to be 0.8mm plus or minus 1% after extrusion is further controlled to be within 0.1% by a rubber tape size feedback control unit of the molding press;
the servo motor and the driver precisely drive the rotation speed of the down-pressing roller (2-2) through a precise transmission system;
the upper profiling roller (2-1) and the lower profiling roller (2-2) profiling the extruded rubber strip (7) into the rubber strip (7) meeting the requirements of shape, thickness and width, and the rotation degree of the lower profiling roller (2-2) is controlled by feeding back the measurement of the high-precision line laser measuring instrument (2-3) to the PLC (programmable logic controller) II, so that the rubber strip (7) with the dimensional precision being stabilized within 0.8mm plus or minus 1% can be further stabilized within 0.1%;
(3) the measurement feedback control scheme of the adhesive tape tension constant control unit in the adhesive tape conveying process is as follows:
the rubber strip tension constant control unit is used for realizing that the dimensional accuracy of the rubber strip (7) with the dimensional accuracy of not more than 0.1 percent after profiling is finally controlled within 0.12 percent during the conveying process;
the ultrasonic sensor I (5) and the ultrasonic sensor II (6) respectively feed detected adhesive tape hanging data back to the PLC III, and the PLC III controls the speed difference between the conveying of the rubber adhesive tapes (7) on the front module belt type adhesive tape conveyor (3) and the rear module belt type adhesive tape conveyor (4) so as to achieve the linear speed perfect matching of the two, so that when the rubber adhesive tapes (7) with the size precision of not more than 0.1% after profiling are finally conveyed to a winding head, the size precision is controlled to be not more than 0.12%;
(4) the total control unit cooperatively controls the speed matching between the extruder (1) and the molding press (2), between the molding press (2) and the conveyor belt of the rear module belt type adhesive tape conveyor (4) and between the conveyor belts of the front module belt type adhesive tape conveyor (3) and the rear module belt type adhesive tape conveyor (4) so as to realize that the rubber adhesive tape (7) always keeps stable and desirable size in the whole process from extrusion, molding to conveying to the winding head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111026761.0A CN113681955B (en) | 2021-09-02 | 2021-09-02 | System and method for precisely controlling size of rubber strip in tread winding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111026761.0A CN113681955B (en) | 2021-09-02 | 2021-09-02 | System and method for precisely controlling size of rubber strip in tread winding |
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| Publication Number | Publication Date |
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| CN113681955A CN113681955A (en) | 2021-11-23 |
| CN113681955B true CN113681955B (en) | 2023-06-23 |
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| CN202111026761.0A Active CN113681955B (en) | 2021-09-02 | 2021-09-02 | System and method for precisely controlling size of rubber strip in tread winding |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113834457B (en) * | 2021-11-26 | 2022-02-22 | 天津赛象科技股份有限公司 | Cloth-wrapping width measuring method and wire ring cloth-wrapping winding method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1133983A (en) * | 1964-11-24 | 1968-11-20 | South Birmingham Engineering C | Improvements relating to the control of the tension of moving strip material |
| CN101966754A (en) * | 2010-09-30 | 2011-02-09 | 安徽佳通乘用子午线轮胎有限公司 | Thin film extrusion production linkage mechanism matched with steel curtain cutting machine |
| CN105984160A (en) * | 2015-02-06 | 2016-10-05 | 青岛软控机电工程有限公司 | Adhesive strip/piece online extrusion jointing unit |
| CN108327151A (en) * | 2018-03-26 | 2018-07-27 | 联亚智能科技（苏州）有限公司 | A kind of adhesive tape multistage molding press device and rubber components wind unit |
| CN208290538U (en) * | 2018-05-25 | 2018-12-28 | 安徽佳通乘用子午线轮胎有限公司 | A kind of extrusion device for tread winding device |
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