JPS5824847A - Measuring and controlling device for reacting amount - Google Patents

Abstract

PURPOSE:To enable to perform both a high-precise measurement and a control of a reacting amount, by mounting a microcomputer which computes the reacting amount based on a temperature signal, and generates an output signal which completes a reaction if the reacting amount reaches a set reacting amount. CONSTITUTION:Temperature detectors 2 are mounted to the inside of a reacting system, the outer surface thereof, and a receptacle. A microcomputer 10 has a computing function which computes a reacting amount based on a temperature signal from the temperature detector 2 and a comparing function which generates an output signal for completing a reaction when said reacting amount coincides with a predetermined set reacting amount or exceeds the set reacting amount. Through the working of said computation and comparison are performed at given intervals. A printer 72 prints said reacting amount. As a result, this enables to perform both a high-precise measurement and a control of a reacting amount.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically measuring and controlling the amount of chemical reaction, such as the reaction amount of rubber vulcanization reaction, bamboo polymer material curing reaction, etc.

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 the 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 amount after t time at the temperature T of the reaction system to the reference reaction amount per unit time at o, that is, the relative reaction amount (equivalent reaction amount) is the following formula (1) or its approximate formula (2) Based on the equation, microcomputer calculations are made so that temperature measurements and changes in reaction amount over time can be read at a glance.

However, U: Equivalent reaction amount E: Activation energy R: Gas constant T: Temperature To2 Reference temperature α: Temperature coefficient t: Time In reality, calculations using the above equation (1) Nishitake (2) are:
For example, the measurement is performed at regular time intervals based on the temperature T1 set in advance, E, R, and To, based on the temperature signal from a temperature detector installed in the reaction system.

With this reaction amount measuring device, the reaction amount could be easily determined instantly on site, but it was not possible to automatically control the reaction amount based on the measured value.

An object of the present invention is to provide a reaction amount measurement and control device that can measure and control a reaction amount with high precision.

The present invention will be explained below based on two illustrated embodiments. A first embodiment is shown in FIGS. 1 to 3. In FIG. 1, 2 is a temperature sensor, for example a thermocouple, which is inserted into the reaction system, for example the shoulder of the tire to be vulcanized, or brought into contact with the outer surface of the shoulder or the inside of the reaction vessel, for example the mold.

This thermocouple 2 generates a temperature signal corresponding to the temperature at the insertion or contact point. This temperature signal is supplied to an amplifier linearizer 4, where it is amplified and linearized, and then converted into a digital temperature signal by an A/D converter 6 and supplied to a microcomputer 10 via an input/output device 8.

In addition to the digital temperature signal, the microcomputer 10 also receives the base temperature set in the reference temperature setter 12.
The temperature TO is supplied via the input/output device 14, and the activation energy E set in the activation energy setting device 16 is
is also supplied via the input/output device 18.

The microcomputer 10 includes a start signal generator 2o
After the start signal generated is supplied via the input/output device 22, the timer 24 outputs the current digital temperature signal each time a command signal generated at regular intervals is supplied via the input/output device 26. It is programmed to calculate the equivalent reaction amount using equation (+) or equation (2) using reference temperature TO1 and activation energy E. Incidentally, as the start signal generator 20, one shown in FIG. 2 is used. This is configured such that the charge stored in the capacitor 30 via the resistor 28 is closed at the same time as the pushbutton switch 32 is closed, in which the mold containing the rubber tire to be vulcanized is closed. A start signal is generated by inverting the electrical change across the capacitor 3o caused by discharging a limit switch (not shown) or a pulse signal generator that simultaneously generates a pulse signal when the mold is closed. It is something. Note that if this start signal is supplied during reaction amount calculation, for example by pressing a push button switch,
The microcomputer 10 erases all the temperature measurements that have been taken up to that point, and takes a new temperature measurement. It is programmed to start calculations.

The microcomputer 10 receives, for example, vulcanization 90, which is set in the reaction amount setting device 36 and supplied via the input/output device 38.
% and the reaction amount at 100% vulcanization, and each calculated equivalent reaction amount are compared each time the equivalent reaction amount is calculated, and the reaction amount at 90% vulcanization is compared. When the amount of reaction becomes larger than that, an output signal is sent to the preliminary finishing device 42 via the input/output device 40, and when it becomes equal to or larger than the reaction amount at 100% vulcanization, an output signal is sent via the input/output device 44. and termination devices 4, respectively, are programmed to provide output signals. The pre-termination device 42 is used to open the mold early in the case of a reaction quantity such as a tire where the reaction proceeds considerably even after the mold is opened.

The pre-termination device 42 is configured, for example, as shown in FIG.
conducts to activate the relay 52, close the contact 54 and light the light emitting diode 56, and close the contact 58 to generate a signal to open the mold. In addition, this signal is configured to be used as a pulse generator (to turn on a figure, generate a contact signal, or generate a pulse.) Therefore, for example, in the case of a rubber vulcanization reaction, 90 f3
Contact 5 of the pre-termination device 42 is activated due to the vulcanization state.
8 is closed, the mold is automatically opened and vulcanization 1 is started.
If the light emitting diode of the termination device 46 lights up when the condition reaches oo% and the mold is removed, the amount of reaction can be controlled very accurately.

In addition, each time the reaction amount is calculated, a reaction amount signal is supplied to the reaction amount display 60 via the input/output device 62 so that the reaction amount is displayed, and each time the reaction amount is calculated, A digital temperature signal is supplied to the temperature display 64 via the input/output device 66 to display the temperature, and a signal representing the elapsed time from the start of the reaction is supplied to the time display via the input/output device 66. 70 to display the time from the start of the reaction]0
is programmed. The reaction amount and measured temperature are also printed on the printer 72 via the input/output device 73. Generally, the higher the frequency of temperature measurement and calculation, the higher the accuracy will be. However, the data output to the printer 72 does not need to be output as frequently as the frequency of temperature measurement and reaction amount calculation, so the number of times of printing is set. If the number of times set in the device 74 is, for example, "2", the data is printed once every two times the reaction amount is calculated. Note that if "1" is set, it will be printed every time.

The microcomputer 10 is still supplied with the lower limit temperature signal set in the lower limit temperature setter 76 via the input/output device 7.
Each time the reaction amount is calculated, the digital temperature signal and the lower limit temperature signal are compared, and if the digital temperature signal is lower than the lower limit temperature signal, the reaction amount at that point is set to 0, that is, the reaction amount is not calculated. programmed. For example, in the case of a bulky reaction mass such as a tire, the temperature is 1
It takes a relatively long time to rise, and the low temperature state is long. Therefore,
When calculating the equivalent reaction amount using the above il1 equation (2), the equivalent reaction amount is small at relatively low temperatures, but it does not accumulate over time, so if the reaction time is long, the error becomes quite large. Therefore, in order to eliminate this error, when the digital temperature signal is below the lower limit temperature signal, the reaction amount at that time is set to 0.

FIG. 4 is a block diagram of the second embodiment. In contrast to the first embodiment, which has 11 temperature detectors 2, the second embodiment has a plurality of temperature detectors, for example, six temperature detectors. Vessels 2a to 2f
These temperature sensors 2a to 2f are either inserted into the reaction system, for example, at different positions along the circumferential direction of the shoulder of the tire to be vulcanized, or inserted into the outer surface at different positions or The difference is that the mold is brought into contact with the interior of the mold corresponding to the different positions. Each temperature signal from the temperature detectors 2a to 2f is sequentially linearly amplified by the amplifier linearizer 4 via the multiplexer 80, then converted into a digital temperature signal by the A/D converter 6, and then sent via the input/output device 8. The signal is supplied to the microcomputer 10. The microcomputer 10c selects a temperature detector, for example 2a, by the channel number selector signal supplied from the channel number selector switch 82 via the input/output device 84.
Each time a digital temperature signal corresponding to the temperature signals 2c and 2e is supplied, it is read, and the position where the temperature detectors 2B, 2Q, and 2e are installed is determined based on the digital temperature signal reference temperature signal and active energy signal. It is programmed to calculate the equivalent reaction amount. There are (2'-1) combinations of temperature detectors 2a to 2f. Also, this calculation is performed after the start signal has already been generated and while the timer 24 is issuing the command signal.

The microcomputer 10 also selects temperature detectors selected by the channel number selector, such as temperature detectors 2a and 2.
It is programmed to select the maximum and minimum of the equivalent reaction amounts listed above so that the arithmetic mean of the equivalent reaction amounts at the positions where Q and 2e are provided can be determined. Use the selector switch 86 to determine whether to calculate the arithmetic mean of these or select the largest dimension or the second smallest dimension.
from the microcomputer 10 via the input/output device 88.
determined by the selector signal supplied to the

The arithmetic mean value, crotch value size, and minimum value are compared with the set value of the reaction amount setting device 36 in the same way as in the first embodiment. The microcomputer 0 is programmed to provide an output signal to the pre-termination device 42 and an output signal to the termination device 46 when the 100% vulcanization condition is met or exceeded. The rest of the structure is the same as that of the first embodiment. Note that 90 is a channel number display, which is used to display the sensor selected by the channel number selector 82;
is its input/output device.

These reaction amount measurement control devices calculate the reaction amount every predetermined time period, display and print the reaction amount, and also compare the calculated reaction amount with a preset reaction amount, so they automatically Reactions can be controlled, increasing work efficiency. In particular, in the second example, the arithmetic mean of multiple calculated reaction amounts can be compared with a preset reaction amount, which improves the accuracy of the reaction amount compared to the case where there is only one reaction amount as in the first example. This increases reaction control, for example, vulcanization accuracy. It is also possible to compare the minimum value of multiple reaction amounts with the set reaction amount, so there is no shortage of reactions.
Improved quality and uniform reaction. Furthermore, since the maximum value among a plurality of reaction amounts can be compared with the set reaction amount, the critical point of the reaction that causes the article to become gel-like can be easily found, and the reaction precision can be improved.

Furthermore, these reaction amount measurement control devices compare the lower limit temperature signal set in the lower limit temperature setting device 76 and the digital temperature signal every time the reaction amount is calculated, and when the digital temperature signal is smaller than the lower limit temperature signal, the When the reaction amount is O
), the error can be eliminated.

In other words, when the digital temperature signal is relatively small, the equivalent reaction amount calculated by 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, Since the calculated equivalent reaction amount includes a considerable amount of error, in order to eliminate this error, when the digital temperature signal is below the lower limit temperature signal, the reaction amount at that time is set to 0. Therefore, since the reaction amount can be calculated with high precision, the control accuracy of the reaction amount can also be improved.

In both of the above embodiments, since the start signal generator 20 is provided, measurement, calculation and control can be automatically started when the vulcanizing press is closed.
By closing the 0 push button switch 32, all the data measured up to that point can be erased and new temperature measurement, division and control can be started. Further, in both embodiments, since a printing number setting device 74 is provided, the measured temperature and reaction amount are printed every set number of times while measurements and calculations are being performed.

In both of the above embodiments, a thermocouple is used as the sensor, but a platinum resistor or the like may also be used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a first embodiment of the reaction amount measuring and controlling device according to the present invention, FIG. 2 is a circuit diagram of a starting device used in the first embodiment, and FIG. FIG. 4 is a block diagram of the second embodiment of the circuit diagram of the pre-termination device used. 2.2a to 2f...temperature detector, 10...microcomputer, 24...timer, 72...printer, 76...lower limit temperature setter. Patent Applicant Sumitomo Rubber Industries Co., Ltd. Agent Tetsu Shimizu and 2 others
Cl/1 procedural amendment (voluntary) Showa °°::, 3. i, JPY 16th Japan Patent Office Commissioner Shima 1) Haruki Tono1, Indication of the case Japanese Patent Application No. 1983-1234622, Name of the invention Reaction amount measurement control device 3, Person making the amendment Relationship with the case 'r! J Revised Applicant Applicant Kaimachi Chuo-ku] - Item T 1 No. 1 So Sumitomo Rubber Industries, Ltd. 5 Subject of amendment ``Title of the invention'', ``Scope of claims'' in the specification, ``Detailed description of the invention'' , "Brief explanation of drawings" columns and drawings. 6. Correct the contents of the amendment. (2) Amend the scope of claims as shown in the attached sheet. (3) On page 4, line 20 of the specification, "control device" is corrected to "control method and device." (4) On page 6, line 13, the text (not shown) is corrected to 33. (5) In the 4th line of page 8, the phrase "may be allowed." should be replaced with "may be allowed." Furthermore, after the light emitting diode is lit, the operator must open the mold. can be corrected. (6) In the 10th line of page 8, the phrase "opens automatically," should be corrected to "open automatically or manually." (7) On page 9, line 3: “It has been done. Also...”
The statement is corrected as follows. It is written. Note that this display is performed by the display stop device 100.
It is also programmed so that it can be stopped by As shown in FIG. 5, the display stop device 1oo drains the electric charge stored in the capacitor 102 via the resistor 101 by using a manual switch 103 and a limit switch 104 which is closed when the mold is opened. When the mold is closed or the mold is opened, a pulse signal generator (not shown) that generates a pulse signal is used to discharge the capacitor 102, and the resulting voltage change across the capacitor 102 is inverted by the inverter 105. Input/output device 1
06 to the microcomputer 1o. Even if the display is stopped by the display stop device 100, the microcomputer 10 calculates the amount of reaction, and when the manual switch 103 and limit switch 104 are opened, the pulse from the pulse signal generator stops. Needless to say, when doing so, the current reaction amount, etc. will be displayed. (8) On page 11, line 19, the phrase "minimum" is corrected to "minimum or reaction amount of a specified channel." (9) In the fifth line of page 12, the phrase "arithmetic mean value, maximum value or minimum value" is replaced by "arithmetic mean value, maximum value 1 minimum value, or the reaction amount at the measurement point selected by the selector switch 86". I am corrected. (10) On page 15, line 3: "This is a block diagram."
The statement "Block diagram, FIG. 5 is a circuit diagram of the display stop device used in the first embodiment." is corrected to "The block diagram shown in FIG. 5 is a circuit diagram of the display stop device used in the first embodiment." (1, 1) Replace Figures 1 and 2 with separate sheets and add Figure 5. Attached documents Claims drawings (Figure 1.2.5) Claims (1) Internal and external views of the reaction system 1TIi'? f. The reaction amount is calculated at predetermined intervals based on the temperature signal from one temperature detector installed in the bamboo container, and each reaction amount is compared with a predetermined set reaction amount, and the reaction amount is determined as the set reaction amount. A reaction amount measurement control method that generates an output signal when the set reaction amount exceeds the set reaction amount. (2) The calculation for the above reaction 1i is \the above 71'111-
9 signal is the predetermined lower limit? ! Line when i7 is below degree/
, C, Claim No. 11Jt
Method for measuring and controlling the amount of reaction in combat. (3) 1 installed on the inside of the reaction system, on the outside surface, or on the container.
temperature sensor, a calculation function that calculates the reaction amount based on the temperature signal of the temperature sensor, and an output signal when the reaction value matches or exceeds the predetermined setting value. A reaction consisting of a calculator having a ratio 1 bite function that generates fft j!, and a timer that causes the above calculations and comparisons to be performed at predetermined intervals: fft j! II constant control device j1π. (4) A patent characterized in that the above-mentioned calculator has a switch for starting the operation of the above-mentioned calculation function and comparison function. Claim 3: The above-mentioned calculator has a printer configured to print every set value of a printing number setting device out of each reaction quantity calculated sequentially.
Reaction amount measuring device according to Items 1 and 4. (6) J: Note J1 "The computer stops the arithmetic function when the temperature signal is below a predetermined lower limit temperature. Reaction amount measuring device. (2nd

Claims (6)

[Claims] (1) At least one temperature detector provided inside the reaction system, on the outer surface, or in the container, a calculation function that calculates the reaction amount based on the temperature signal of the temperature sensor, and a predetermined setting for the reaction amount. A microcomputer having a comparison function that generates an output signal to terminate the reaction when the reaction amount matches or exceeds the set reaction amount, a timer that causes the above calculation and comparison to be performed at predetermined intervals, and at least a printout of the above reaction amount. A reaction amount measurement control device consisting of a printer and a printer. (2) The reaction amount measurement control device according to claim 1, wherein the microcomputer has a switch for starting the operation of the arithmetic function and the comparison function. (3) The reaction amount measurement control according to claim 1, wherein the print link is configured to print every set value of a printing number setting device among each reaction amount calculated sequentially. Device. (4) The reaction amount measurement control device according to claim 1, wherein the temperature detectors are provided at different positions inside the reaction system, on the outer surface, or on the container. (5) at least one temperature detector installed on the internal and external surface dimensions of the reaction system, and a calculation function that calculates the reaction amount based on the temperature signal from the temperature detector; (2) A comparison function that generates an output signal to terminate the reaction when the reaction volume reaches or exceeds a predetermined set reaction volume; and (1) When the temperature signal is below the predetermined lower limit temperature value.
1. A reaction amount measurement control device comprising a microcomputer having a stop function for stopping the calculation function, a timer for performing the calculation and comparison at predetermined intervals, and a printer for printing the reaction amount. (6) The reaction amount measurement control device according to claim 5, wherein the temperature detector is provided inside the reaction system, on the outer surface, or at different positions in the container.