CN214563125U - TBR tire blank inflation pressure control device - Google Patents
TBR tire blank inflation pressure control device Download PDFInfo
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- CN214563125U CN214563125U CN202120708388.6U CN202120708388U CN214563125U CN 214563125 U CN214563125 U CN 214563125U CN 202120708388 U CN202120708388 U CN 202120708388U CN 214563125 U CN214563125 U CN 214563125U
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Abstract
The utility model relates to a TBR child embryo inflation pressure control device belongs to tire production facility field. The air outlet of the first electromagnetic valve is communicated with the air inlet of the left valve position of the second electromagnetic valve, the air inlet of the proportional valve and the air inlet of the third electromagnetic valve through an air pipe; the left side gas port of the TBR forming drum is an air inlet and exhaust shared gas path interface, the gas outlet of the left valve position of the second electromagnetic valve is communicated with the left side gas port of the TBR forming drum through a gas pipe, the gas outlet of the proportional valve is communicated with the left side gas port of the TBR forming drum through a gas pipe, the gas inlets of the first quick exhaust valve and the second quick exhaust valve are respectively communicated with the left side gas port of the TBR forming drum through a gas pipe to serve as a main gas path for quickly exhausting compressed air in the inflation cavity of the TBR forming drum, the right side gas port of the TBR forming drum serves as an auxiliary gas outlet and is communicated with the gas inlet of a third quick exhaust valve through a gas pipe, and the right side gas port of the TBR forming drum is communicated with the gas inlet of a pointer wind pressure gauge through a gas pipe. The inflation pressure in the tire blank is stable, the control precision is high, and the automation degree is high.
Description
Technical Field
The utility model relates to a tire apparatus for producing field says in detail a TBR child embryo inflation pressure control device.
Background
As is known, the existing TBR all-steel truck radial tire one-step forming machine commonly used at home and abroad is characterized in that a tire body cylinder assembly formed at the main machine side is formed by filling compressed air into a middle drum for forming, is combined with a BT assembly formed at the auxiliary machine side in a centering way, and is formed to produce a tire blank through apex rubber pressing, tread pressing, turn-up and sidewall pressing. In the forming process, the control precision of the pressure of the compressed air inside the tire blank, namely the inside of the inflating cavity of the forming drum, is particularly important, and the internal quality of the product, such as uniformity, dynamic balance and the like, is directly influenced.
A single pressure sensor is generally adopted to detect the internal pressure of a green tire in real time, analog quantity voltage or analog quantity current signals are input to a signal input end of a programmable logic controller, the programmable logic controller controls related pneumatic valves to be opened and closed according to a pressure set value required by a producer process technology, and control signals are output to a pressure regulating proportional valve, so that the internal pressure in the green tire forming process is relatively stable and is kept within a certain precision error range.
There are the following problems: due to the reasons of electrical interference, gas path leakage, hardware failure of the sensor, hardware failure of the signal module and the like, various abnormal conditions such as linearity error of the output voltage or current analog signal of the pressure sensor, 0 pressure value acquired by the programmable logic controller, pressure A/D conversion error and the like occur, the actual inflation pressure in the tire can not be correctly measured and fed back, the measurement distortion causes poor control precision, large fluctuation of the internal pressure of the tire, even the pressure exceeds the upper and lower limits of the technical requirements of the process, and X-ray waste products such as batch shoulder deformation, bubbles and the like are generated, and the most serious condition is that: when a pressure sensor or an analog quantity signal module has a hardware fault, the pressure value acquired by the programmable logic controller is 0, the inflation action of the tire blank is not stopped, and the tire blank is inflated until the tire body cylinder is exploded due to overpressure, so that the personal safety of operators is endangered, and the inflation and shaping steps of the tire blank generally occur.
Disclosure of Invention
In order to overcome prior art's not enough, the utility model provides a TBR child embryo inflation pressure controlling means can realize the inside inflation pressure stable control of child embryo, and control accuracy is high and degree of automation is high.
The utility model provides a technical scheme that its technical problem adopted is: a TBR tire inflation pressure control device is characterized in that an air outlet of a first electromagnetic valve is communicated with an air inlet of a left valve position of a second electromagnetic valve, an air inlet of a proportional valve and an air inlet of a third electromagnetic valve through an air pipe; the left side air port of the TBR forming drum is an air inlet and exhaust shared air path interface, the air outlet of the left valve position of the second electromagnetic valve is communicated with the left side air port of the TBR forming drum through an air pipe, the air outlet of the proportional valve is communicated with the left side air port of the TBR forming drum through an air pipe, the air inlets of the first quick exhaust valve and the second quick exhaust valve are respectively communicated with the left side air port of the TBR forming drum through the air pipe to be used as a compressed air quick exhaust main air path in the inflating cavity of the TBR forming drum, the right side air port of the TBR forming drum is used as an auxiliary air outlet and is communicated with the air inlet of the third quick exhaust valve through the air pipe, air is supplied to the first pressure sensor, the second pressure sensor and the third pressure sensor in the inflating cavity of the TBR forming drum, and the right side air port of the TBR forming drum is communicated with the air inlet of the pointer air pressure gauge through the air pipe; the signal output end of the programmable logic controller is connected with the signal control ends of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the proportional valve and the third quick exhaust valve, the signal output end of the programmable logic controller is connected with the servo system of the TBR forming drum, and the signal input end of the programmable logic controller is connected with the signal output ends of the second pressure sensor and the third pressure sensor.
The utility model discloses still can realize through following measure:
and mufflers are arranged on the left valve position exhaust port of the second electromagnetic valve, the right valve position exhaust port of the second electromagnetic valve, the exhaust port of the third electromagnetic valve, the exhaust port of the first quick exhaust valve, the exhaust port of the second quick exhaust valve, the exhaust port of the third quick exhaust valve and the exhaust port of the proportional valve.
The programmable logic controller is installed in a host control cabinet of the TBR forming machine.
The first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the proportional valve, the first quick exhaust valve, the second quick exhaust valve, the third quick exhaust valve, the first pressure sensor, the second pressure sensor and the third pressure sensor are installed in a transmission case of the TBR forming drum.
And the pointer wind pressure gauge is arranged on a transmission case cover of the TBR forming drum.
The beneficial effects of the utility model are that, automatic control need not artifical the participation, and control accuracy is high, and the fault rate is low, and the operation is stable, and the hardware maintenance cost is low, and the synchronous real-time detection of many sets of pressure measurement device, programmable logic controller are to detecting data real-time comparison, in time discover to detect unusually and correct, and controlling means reliability is high.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a TBR forming drum, 2, a programmable logic controller, 3, a first solenoid valve, 4, a second solenoid valve, 5, a proportional valve, 6, a first quick exhaust valve, 7, a second quick exhaust valve, 8, a third quick exhaust valve, 9, a first pressure sensor, 10, a second pressure sensor, 11, a third pressure sensor, 12, a pointer air pressure gauge and 13, a third solenoid valve are arranged in a rotating mode.
Detailed Description
In fig. 1, the air outlet of the first electromagnetic valve 3 of the present invention is communicated with the air inlet of the left valve position of the second electromagnetic valve 4, the air inlet of the proportional valve 5 and the air inlet of the third electromagnetic valve 13 through the air pipe; a left air port of the TBR forming drum 1 is a common air path interface for air intake and exhaust; the air outlet of the left valve position of the second electromagnetic valve 4 is communicated with the air port on the left side of the TBR forming drum 1 through an air pipe; an air outlet of the proportional valve 5 is communicated with an air inlet on the left side of the TBR forming drum 1 through an air pipe; air inlets of the first quick exhaust valve 6 and the second quick exhaust valve 7 are respectively communicated with an air inlet on the left side of the TBR forming drum 1 through an air pipe and are used as a main air passage for quickly exhausting compressed air in an inflation cavity of the TBR forming drum 1; the right side air port of the TBR forming drum 1 is used as an auxiliary air outlet and is communicated with an air inlet of a third quick exhaust valve 8 through an air pipe, air is simultaneously supplied to a first pressure sensor 9, a second pressure sensor 10 and a third pressure sensor 11 of an air pressure detection sensor in an inflation cavity (namely the interior of a tire blank) of the TBR forming drum 1, and the right side air outlet of the TBR forming drum 1 is respectively communicated with the air inlets of the first pressure sensor 9, the second pressure sensor 10 and the third pressure sensor 11 through the air pipe; the air port on the right side of the TBR forming drum 1 is communicated with the air inlet of the pointer wind pressure gauge 12 through an air pipe;
in order to reduce the influence of pressure release (exhaust) in the inflating cavity of the TBR forming drum 1 on the environment, silencers are arranged on a left valve position exhaust port of a second electromagnetic valve 4, a right valve position exhaust port of the second electromagnetic valve 4, an exhaust port of a third electromagnetic valve 13, an exhaust port of a first quick exhaust valve 6, an exhaust port of a second quick exhaust valve 7, an exhaust port of a third quick exhaust valve 8 and an exhaust port of a proportional valve 5.
The signal output end of the programmable logic controller 2 is connected with the signal control ends of the first electromagnetic valve 3, the second electromagnetic valve 4, the third electromagnetic valve 13, the proportional valve 5 and the third quick exhaust valve 8; the signal output end of the programmable logic controller 2 is connected with servo system control elements of TBR (tunnel boring machine) forming drum 1 rotation, machine head width distance adjustment, turning-up and falling-down rod lifting and the like; the signal input end of the programmable logic controller 2 is connected with the signal output ends of the second pressure sensor 10 and the third pressure sensor 11.
The programmable logic controller 2 is installed in a host control cabinet of the TBR forming machine, elements such as a first electromagnetic valve 3, a second electromagnetic valve 4, a third electromagnetic valve 13, a proportional valve 5, a first quick exhaust valve 6, a second quick exhaust valve 7, a third quick exhaust valve 8, a first pressure sensor 9, a second pressure sensor 10 and a third pressure sensor 11 are installed in a transmission case of the TBR forming drum 1, a pointer air pressure gauge 12 is installed on a transmission case cover of the TBR forming drum 1, the surface of the gauge faces an operator, visual observation is facilitated, and the air pressure in an air cavity (namely the inside of a tire blank) of the TBR forming drum 1 is displayed in real time.
When the pilot-operated type electromagnetic valve 13 controls the first quick exhaust valve 6 and the second quick exhaust valve 7, and the programmable logic controller 2 outputs a digital quantity OFF control signal to the pilot-operated type electromagnetic valve 13, the electromagnetic coil of the pilot-operated type electromagnetic valve 13 is de-energized, the first quick exhaust valve 6 and the second quick exhaust valve 7 do not act, and the compressed air flow for inflating the tire blank flows out from the air outlet of the left valve position of the second electromagnetic valve 4 and the air outlet of the proportional valve 5 and flows to the inflating cavity of the TBR forming drum 1. When the programmable logic controller 2 outputs a digital quantity ON control signal to the pilot type electromagnetic valve 13, the electromagnetic coil of the pilot type electromagnetic valve 13 is electrified, the first quick exhaust valve 6 and the second quick exhaust valve 7 act, the exhaust port is opened simultaneously, the air inflation cavity of the TBR forming drum 1 is communicated with the outside atmosphere, and when the pressure in the air inflation cavity of the TBR forming drum 1 is greater than the atmospheric pressure, the first quick exhaust valve 6 and the second quick exhaust valve 7 exhaust air.
The third quick exhaust valve 8 arranged ON the exhaust pipeline of the TBR forming drum 1 is directly controlled by a digital quantity signal ON/OFF output by the programmable logic controller 2, when the programmable logic controller 2 outputs an ON signal to an electromagnetic coil of the third quick exhaust valve 8, the third quick exhaust valve 8 acts, an exhaust port is opened, the air inflation cavity of the TBR forming drum 1 is communicated with the outside atmosphere, and when the pressure in the air inflation cavity of the TBR forming drum 1 is greater than the atmospheric pressure, exhaust is carried out. When the tire blank is subjected to inflation shaping, apex pressing, tread pressing, turn-up, tire side pressing and other forming steps, the programmable logic controller 2 outputs an OFF signal to the electromagnetic coil of the third quick exhaust valve 8, the third quick exhaust valve 8 does not act, when the tire blank is subjected to the tire side pressing step and the TBR forming drum carries out tire blank internal pressure exhaust, the programmable logic controller 2 outputs an ON signal to the electromagnetic coil of the third quick exhaust valve 8, and the third quick exhaust valve 8 acts to exhaust.
The method comprises the steps that a first pressure sensor 9, a second pressure sensor 10 and a third pressure sensor 11 detect the air pressure in an air inflation cavity (namely the inner part of a tire blank) of a TBR forming drum 1 in real time, the pressure detected by the first pressure sensor 9 is input to a feedback input end of a proportional valve 5 in the form of an analog quantity signal, the pressure detected by the second pressure sensor 10 and the third pressure sensor 11 is input to an analog quantity signal input module of a programmable logic controller 2 in the form of an analog quantity signal, a CPU module of the programmable logic controller 2 is acquired after internal A/D conversion, the internal logic judges the numerical difference corresponding to the inner pressure of the tire blank detected by the second pressure sensor 10 and the third pressure sensor 11, when the difference is larger than an allowable numerical value, the system fault of a pressure detection device is judged, the tire blank forming and the equipment stopping are automatically interrupted, an alarm is given on an HMI interface of the TBR forming machine to prompt an operator to search the fault reason, and after the fault is eliminated, the production can be continued.
During normal production, after logically judging that a tire blank inflation shaping condition is met, the programmable logic controller 2 executes inflation shaping action, the programmable logic controller 2 outputs ON signals to a first electromagnetic valve 3 electromagnetic coil, a second electromagnetic valve 4 left valve position electromagnetic coil and a third electromagnetic valve 13 electromagnetic coil, the programmable logic controller 2 outputs corresponding analog quantity signals to a proportional valve 5 according to a tire blank inflation shaping pressure set value required by the tire production process technology of a producer, the first electromagnetic valve 3, the second electromagnetic valve 4 left valve position, the third electromagnetic valve 13 and the proportional valve 5 simultaneously act, and an air source flows to an inflation cavity of a TBR (tunnel boring machine) forming drum 1, namely the interior of a TBR tire blank, and performs tire blank inflation shaping; in the inflation process, the programmable logic controller 2 outputs a control signal to the TBR forming drum 1 nose width adjusting servo device according to the technical requirements of the tyre production process of a producer, so that the nose width of the TBR forming drum 1 reaches the setting width setting value of the technical requirements of the tyre production process of the producer.
In the tire blank forming process, in the tire tread pressing process, the tire turning-up process and the tire side pressing process, due to the fact that a rear press roller rolls, the internal volume of the tire blank is reduced and increased by a certain amount, and the TBR forming drum 1 is sealed and leaked, pressure fluctuation in the tire blank is caused, the programmable logic controller 2 sets pressure according to the tire blank internal pressure and the production process technical requirements detected by the second pressure sensor 10 and the third pressure sensor 11 in real time, when the pressure difference is within the range of +/-0.1 bar, the proportional valve 5 is controlled to exhaust and inflate, and when the actual pressure is higher than the set pressure by 0.1bar, the proportional valve 5, the first quick exhaust valve 6 and the second quick exhaust valve 7 are controlled to exhaust simultaneously; when the actual pressure is lower than the set pressure by 0.1bar, the proportional valve 5 and the left valve position of the second electromagnetic valve 4 are controlled to act simultaneously to inflate and supplement the pressure to the green tire until the pressures detected by the second pressure sensor 10 and the third pressure sensor 11 reach the set pressure required by the process technology.
When the internal pressure of the tire blank reaches the set pressure required by the production technology, the programmable logic controller 2 outputs an OFF signal to control the coil of the left valve position electromagnetic valve of the second electromagnetic valve 4 to lose power, control the valve core opening of the proportional valve 5 to close, stop supplying air to the TBR forming drum, and simultaneously the programmable logic controller 2 outputs an OFF signal to control the electromagnetic coil of the third quick exhaust valve 8 to lose power, so that the internal pressure of the tire blank is maintained. The air inlet of the tire blank inflation air path is the total air source pressure of the equipment, and the internal pressure of the tire blank is always less than or equal to the air source pressure.
After the molding steps of inflation shaping, apex stitching, tread stitching, turn-up, sidewall stitching and the like of the tire blank are sequentially completed, releasing the internal pressure of the tire blank (namely exhausting), outputting an OFF signal to a solenoid coil of a first solenoid valve 3 and a solenoid coil of a left valve position of a second solenoid valve 4 by a programmable logic controller 2, and outputting an analog quantity signal to control the valve core opening of a proportional valve 5 to be closed; meanwhile, the programmable logic controller 2 outputs ON signals to a third electromagnetic valve 13 electromagnetic coil, a third quick exhaust valve 8 electromagnetic coil and a second electromagnetic valve 4 right valve position electromagnetic coil, the first quick exhaust valve 6, the second quick exhaust valve 7, the third quick exhaust valve 8 and the second electromagnetic valve 4 right valve position act, and compressed air in the TBR forming drum 1 is simultaneously exhausted from a first quick exhaust valve 6, a second quick exhaust valve 7, the third quick exhaust valve 8 and a second electromagnetic valve 4 right valve position exhaust port to perform exhaust and pressure relief; when the internal pressure of the tire blank is lower than 0.2bar, the programmable logic controller 2 outputs a control signal to control the tire bead locking block of the TBR forming drum to descend, the tire blank is separated from the TBR forming drum 1, the internal pressure of the tire blank is completely released, then the tire blank is removed, and the molding output of the tire blank is completed.
Claims (5)
1. A TBR tire inflation pressure control device is characterized in that an air outlet of a first electromagnetic valve is communicated with an air inlet of a left valve position of a second electromagnetic valve, an air inlet of a proportional valve and an air inlet of a third electromagnetic valve through an air pipe; the left side air port of the TBR forming drum is an air inlet and exhaust shared air path interface, the air outlet of the left valve position of the second electromagnetic valve is communicated with the left side air port of the TBR forming drum through an air pipe, the air outlet of the proportional valve is communicated with the left side air port of the TBR forming drum through an air pipe, the air inlets of the first quick exhaust valve and the second quick exhaust valve are respectively communicated with the left side air port of the TBR forming drum through the air pipe to be used as a compressed air quick exhaust main air path in the inflating cavity of the TBR forming drum, the right side air port of the TBR forming drum is used as an auxiliary air outlet and is communicated with the air inlet of the third quick exhaust valve through the air pipe, air is supplied to the first pressure sensor, the second pressure sensor and the third pressure sensor in the inflating cavity of the TBR forming drum, and the right side air port of the TBR forming drum is communicated with the air inlet of the pointer air pressure gauge through the air pipe; the signal output end of the programmable logic controller is connected with the signal control ends of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the proportional valve and the third quick exhaust valve, the signal output end of the programmable logic controller is connected with the servo system of the TBR forming drum, and the signal input end of the programmable logic controller is connected with the signal output ends of the second pressure sensor and the third pressure sensor.
2. The device for controlling the inflating pressure of the TBR green tire according to claim 1, wherein mufflers are installed at the left valve position exhaust port of the second electromagnetic valve, the right valve position exhaust port of the second electromagnetic valve, the exhaust port of the third electromagnetic valve, the exhaust port of the first quick exhaust valve, the exhaust port of the second quick exhaust valve, the exhaust port of the third quick exhaust valve and the exhaust port of the proportional valve.
3. The device for controlling the inflation pressure of the TBR green tire according to claim 1, wherein the programmable logic controller is installed in a main machine control cabinet of the TBR forming machine.
4. The device for controlling the inflation pressure of the TBR green tire according to claim 1, wherein the first solenoid valve, the second solenoid valve, the third solenoid valve, the proportional valve, the first quick exhaust valve, the second quick exhaust valve, the third quick exhaust valve, the first pressure sensor, the second pressure sensor and the third pressure sensor are arranged in a transmission case of the TBR building drum.
5. The device for controlling the inflation pressure of the TBR green tire according to claim 1, wherein the pointer wind pressure gauge is mounted on a transmission case cover of the TBR forming drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120708388.6U CN214563125U (en) | 2021-04-08 | 2021-04-08 | TBR tire blank inflation pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120708388.6U CN214563125U (en) | 2021-04-08 | 2021-04-08 | TBR tire blank inflation pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214563125U true CN214563125U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120708388.6U Active CN214563125U (en) | 2021-04-08 | 2021-04-08 | TBR tire blank inflation pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214563125U (en) |
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2021
- 2021-04-08 CN CN202120708388.6U patent/CN214563125U/en active Active
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