JPS5824848A - Measuring and controlling method for reacting amount and device thereof - Google Patents

Abstract

PURPOSE:To enable to perform both a precise-high measurement and a control of a reacting amount, by a method wherein each reacting amount is computed based on each temperature signal to find the arithmetic mean value, the maximum value, and the minimum value of said reacting amount, and an output signal is generated if each of said values exceeds a set value. CONSTITUTION:A plural number of temperature detectors 1-6 are mounted to different positions at the inside of a reacting system, the outer surface thereof, and a receptacle. The detector outputs a temperature signal, corresponding to temperature of a position where said detector is located, to a multiplexer 7. A microcomputer 10 computes their respective reacting amounts based on said temperature signals. Additionally, the computer 10 counts an arithmetic mean value of each reacting amount computed corresponding to selection of a selector switch 21, selects the maximum value or the minimum value of the computed reacting amounts, and selects a given reacting amount out of the computed reacting amounts. When said reacting amount, the arithmetic mean value, the maximum value, or the minimum value coincides with or exceeds a predetermined reacting amount, an output signal is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically measuring and controlling the amount of chemical reaction light, such as a rubber vulcanization reaction or a polymeric substance curing reaction.

Generally, in the chemical industry, reaction efficiency is improved by controlling the reaction process.
Increasing product quality and yield is extremely important.

Therefore, as disclosed in Japanese Patent Application No. 54-22025 and Japanese Patent Application No. 55-162126, the present applicant has developed a reaction amount measuring device that can easily measure the reaction amount at a work site as a prerequisite for controlling the reaction process. This is based on the Arrhenius reaction rate equation for chemical reactions, and the reference temperature T
The ratio of the reaction 411'' after 5 hours at 71rlNTσT of the reaction yarn to the standard reaction amount per unit time at o, that is, the relative reaction 1'' (equivalent reaction 1i'') is expressed as
V) is calculated by a microcomputer based on Equation 1) or its approximate equation (2), and allows temperature measurement and changes in reaction amount over time to be read in one area.

However, U: Equivalent reaction amount E: Activation energy R: Gas constant T: Temperature TO22 humidity Temperature: Temperature coefficient t: Time Actually, the calculation using the above equation (1) or (2) is 1
For example, this is carried out at regular time intervals based on a temperature T1 obtained from a temperature signal from a temperature detector provided in the reaction system and a preset EsRSTosα.

This reaction amount measuring device can only easily determine the reaction amount instantly on site, and cannot automatically control the reaction amount based on the measured value.

An object of the present invention is to provide a method and apparatus for measuring and controlling a reaction amount, which can both measure and control the reaction amount with high precision.

This invention will be explained below based on one embodiment shown in the drawings.

In FIG. 1, reference numerals 1 to 6 indicate a plurality of temperature detectors, such as thermocouples, which are located at different positions along the circumferential direction of the reaction system, such as the shoulder of a tire to be vulcanized, or inside the mold. It is set in.

These temperature detectors 1 to 6 supply a multiplexer 7 with a temperature signal corresponding to the temperature at the position where they are provided.

The multiplexer 7 sequentially supplies the temperature signals from the temperature detectors 1 to 6 to the amplifier linearizer 8 at intervals of, for example, 0.5 seconds, and when the supply of the temperature signal from the temperature detector 6 is finished, the multiplexer 7 supplies the temperature signals from the temperature detectors 1 to 6 to the amplifier linearizer 8 again at intervals of, for example, 0.5 seconds. The temperature signal from the detector 1 is supplied to the amplifier linearizer 8, and this process is repeated thereafter. The amplifier linearizer 8 amplifies and linearizes the supplied temperature signals and supplies them to the 1A/D converter 9. The A/D converter 9 converts the supplied temperature signal into a digital temperature signal and supplies it to the microcomputer 10.

The microcomputer 10 includes a start signal generator 1
After supplying one custard signal to the microcomputer 10, the timer 12 generates a command signal that is generated every predetermined period of time.Whenever a command signal is supplied, the digital signal selected by the channel number selector 13, e.g., the temperature detector 2.3 'N 6 temperature signal is read, and these, the reference temperature set in the reference temperature setting device 14, and the activation energy set in the activation energy setting device 15 are calculated using the equation (1) or (2) described above. Substitute into the equation 1 temperature sensor 2.3
．． 6. Calculate the reaction amount corresponding to the temperature at the installation position. Note that the 1-channel mathematic detector 13 has a combination of temperature detectors 1 and 6 (26-
1) You can select a combination of items.

As the start signal generating device 11, one shown in FIG. 2 is used. This transfers the charge stored in the capacitor 17 via the resistor 16 to the one-button switch 18.
Both capacitors 17 are connected by discharging by a limit switch 19 that closes when the mold is closed or by a puffless signal generator (not shown) that simultaneously generates a pulse signal when the mold is closed. A start signal is generated by inverting the voltage change occurring between A and A by an inverter 20. Note that when this start signal is supplied during reaction amount calculation, the microcomputer 10 is programmed to erase all the data measured up to that point and calculate the reaction amount using new data.

The microcomputer 10 calculates the arithmetic mean value of each reaction amount calculated in accordance with the selection of the selector switch 21;
The maximum value or minimum value of dialysis among the calculated reaction amounts, or a predetermined value of the calculated reaction systems (the reaction amount only at the measurement point selected with the selector switch 2) is selected.

Furthermore, the microcomputer 10 is configured to use the reaction and
Compare the above arithmetic mean value, maximum value, minimum value or selected value with the above arithmetic mean value, maximum value, minimum value or selected one, and vulcanization is 90%.
The output signal is sent to the pre-termination device 23 when the reaction amount matches or exceeds the reaction amount at 100% vulcanization, and the output signal is terminated when the reaction amount matches or exceeds the reaction amount at 100% vulcanization. device 24 respectively. The pre-termination device 23 is used to open the mold early in advance when the reaction progresses considerably even after the mold is opened, such as in the case of tires.

The pre-termination device 23 is configured as shown in FIG. When activated, the contact 28 is closed to light up the light emitting diode #:29, and the X contact 30 is closed to generate a signal for opening the mold. =! This signal may also be applied to a pulse generating device (not shown) to generate pulses. Alternatively, the mold may be opened manually when the light emitting diode 29 is turned on. The termination device 24 is configured similarly to the pre-termination device 23, and a light emitting diode (not shown) lights up when vulcanization reaches 100%, and a signal generated at the same time automatically removes the reactant from the mold. It can be taken out. The tire can also be manually removed from the mold when the light emitting diode lights up. Therefore, for example, in the case of a rubber vulcanization reaction, the mold is opened manually or automatically when the 90% vulcanization state is reached, and the tire is removed from the mold manually or automatically when the 100% vulcanization state is reached. can be extracted and the reaction volume can be controlled very precisely.

In addition, each time the reaction amount is calculated, the reaction amount is displayed on the reaction amount display 31, and the time from the start of the reaction is displayed on the time display 32.
The microcomputer 10 is programmed so that each temperature is displayed on the temperature display 33. It should be noted that it is also programmed so that these displays can be stopped by a display stop (9) device 33. The display stop device 33 is constructed almost the same as the start signal generator 11, as shown in FIG. The difference is that the closing of the limit switch 19a and the generation of pulses for pulse detection and generation are performed when the mold is opened or when the tire is taken out from the mold.

Therefore, each indicator 31, 32, 33 stops displaying when the mold is opened, when the diamond is removed from the mold, or when the manual switch 18 is closed.

Needless to say, the microcomputer 10 continues to calculate the reaction amount regardless of whether the display has stopped or when the limit switch 19a or manual switch 18 is opened, or when the pulse signal generator n generates a pulse. When the reaction is stopped, the current reaction amount, temperature, and time are displayed on each display 31% 32.33.

Furthermore, the reaction amount and the measured temperature are printed out by the printer 34. Generally, the higher the frequency of temperature measurement and calculation, the higher the accuracy of measurement and control, but it is not necessary to print as much on one printer 34 (10). If it is set to "2", the configuration is such that the reaction amount and measured temperature are printed once every time the reaction amount is calculated twice. It goes without saying that if "1" is set, it will be printed every time.

The microcomputer 10 is supplied with the lower limit temperature signal set in the lower limit temperature setting device 37. It compares the digital temperature signal with the limit temperature signal, and if the digital temperature signal is lower than the lower limit temperature signal, it determines the amount of reaction at that point. It is programmed to set O, that is, not to calculate the reaction amount. For example, in the case of a large reactor such as a tire, it takes a relatively long time for the temperature to rise, and the low temperature state is long. Therefore, the above (
When calculating the equivalent reaction amount using equation 1) or equation (2), the equivalent reaction amount is small at relatively low temperatures, but it accumulates over time, so if the reaction time is long, the error becomes quite large. In order to eliminate this error, when the digital temperature signal is less than the lower limit temperature signal, the inverse (11) at that time. It is something.

This reaction measurement control device calculates the reaction amount every time a predetermined period of 5 has elapsed, and the reaction amount is set at a ratio of 1 to the preset reaction amount, so the reaction amount is controlled at 11 degrees. In particular, it is possible to compare the calculated arithmetic mean for multiple reactions with the preset reaction amount, so it is possible to
Compared to the case where the reaction amount is only one as in the case of No. 62, the accuracy of the reaction amount becomes more accurate, and reaction control, for example, vulcanization accuracy, cannot be improved. It is also possible to compare the minimum value of multiple reaction amounts with the set reaction amount, eliminating insufficient reactions.
Improved quality and uniform reaction. Furthermore, since the maximum value among multiple reaction amounts can be set to a ratio of 1 to the set reaction amount, the critical point of the reaction that causes the product to become gel-like can be easily found and the reaction precision can be improved. This reaction amount measurement control device compares the lower limit temperature signal set in the lower limit 1 degree setting device and the digital temperature (12) signal every time the reaction amount is calculated, and when the 1 dicle temperature signal is smaller than the lower limit temperature signal. , since the reaction amount at that time is treated as 0, errors can be eliminated. In other words, if the digital temperature signal is relatively small, the equivalent reaction amount calculated using the Arrhenius reaction rate equation or its approximation will be a very small value, but since it is accumulated over time, if the reaction time t is long, the calculated Since the equivalent reaction amount obtained contains a considerable error, in order to eliminate the error, when the digital temperature signal is below the lower limit temperature signal, the reaction amount at that time is set to O. Therefore, since the reaction amount can be calculated with high precision, the control accuracy of the reaction amount can also be improved.

In addition, in the above embodiment, since the start signal generator 11 is provided, measurement, calculation and control can be automatically started when the vulcanizing press is closed, and the start signal generator 11
By closing the push button switch 18, all the data that has been measured up to that point can be erased and new temperature measurement, calculation and control can be started. Further, in this embodiment, since a one-time printing number setting device 35 is provided (13), the measured temperature and one reaction amount are printed every set number of times while measurements and calculations are performed.

In the above embodiment, a thermocouple was used as the temperature detector, but a platinum resistor or the like may also be used.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a reaction amount measurement control device according to the present invention, Fig. 2 is a circuit diagram of a halt start signal generating device used in the same device, and Fig. 3 is a circuit diagram of a pre-termination device used in the same device. , FIG. 4 is a circuit diagram of the display stop device. 1 to 6...Temperature detector, 7...Multiplexer, 10-A11 Microcomputer, 11.-Start signal generator, 12... Timer, 13...Channel number selector, 211 II la Rectus inch, 2
2--Reaction amount setting device, 34--Printer, 351-
Print count setter 138...lower limit temperature setter. Patent applicant Sumitomo Rubber Industries Co., Ltd. Representative Tetsu Shimizu and 2 others (14) Sai2 @ 23 Gunden 4

Claims (6)

[Claims] (1) A process of detecting temperature signals corresponding to the temperatures at multiple different positions inside the reaction system, on the outer surface, or in a container, a process of calculating reaction amounts based on each of these temperature signals, and a process of calculating each reaction amount based on each of these temperature signals. The process of determining the arithmetic mean value, maximum value, or minimum value of the reaction amount 1, and generating an output signal when the arithmetic mean value, maximum value, or minimum value of the reaction amount 1 matches or exceeds a predetermined set reaction amount. A reaction amount measurement control method comprising the steps of: (2) The reaction amount measurement control method according to claim 1, wherein the calculation of the reaction amount is not performed when the temperature signal is less than or equal to a predetermined lower limit temperature. (3) A plurality of temperature detectors installed at different positions inside the reaction system, on the outer surface, or on the container, and a multiplexer that supplies temperature signals from these temperature detectors to a computer with multiple functions. 1. The calculator is equipped with a selector switch for selecting the above-mentioned temperature signal to be supplied to the calculator, and a selector switch for selecting each of the above-mentioned functions.
A function to calculate the reaction amount based on the temperature signal supplied above, a function to arithmetic average these reaction amounts, a function to select the maximum value of these reaction amounts, and a function to select the minimum value of the reaction amount 1. Function and reaction amount, arithmetic rod average value, maximum l17T or minimum value matches a predetermined set reaction amount" or has a ratio 1 bite function that generates an exit signal when it exceeds the set reaction amount, The above selector switch has the following functions: 1) Reaction amount calculation function and comparison function, 1) Reaction amount calculation function, maximum value selection function and comparison function, 1) Reaction amount calculation function and maximum value selection function and comparison function, 1) Reaction amount A reaction amount measurement control method configured to select an arithmetic function, an arithmetic average function, and a comparison function. (4) The reaction amount measurement control method according to claim 3, wherein the computer has an operation start signal generating device. (5) Claims 3 and 4, characterized in that the above-mentioned calculator has a printer configured to print out the sequentially calculated reaction quantities at every set value of the printing number setting device. Reaction amount measurement control device as described in . (6) The reaction amount measurement control device according to any one of claims 3 to 5, wherein the calculator stops the calculation function when the temperature signal is below a predetermined lower limit temperature.