JPS63200825A - Kneading control method in sealed kneader - Google Patents

Abstract

PURPOSE:To keep the quality of a kneaded material in a specified range, by constantly comparing each factor of a reference model and the factor obtained in actual kneading to distinguish normalcy from abnormalcy. CONSTITUTION:The kneading temp. T0 in each kneading, kneading time t0, electric energy P0 from a wattmeter provided to the driving source of the sealed kneader, watt-hour abnormal value SIGMAP1, watt-hour normal lower-limit value SIGMAP2, and watt-hour arrival value SIGMAP0 are read from the reference model, and preset to the control circuit of the sealed kneader. The set values and the actual measured values T, P and SIGMAP are constantly compared. The kneading time t is started from the time P0 when the electric energy P reaches a fixed value, kneading is finished when the kneading time T reaches the set value T0 most quickly, and abnormalcy is displayed when the electric energy SIGMAP reaches the abnormal value SIGMAP1 before the electric energy P reaches the fixed value Po. Kneading is finished when the watt-hour SIGMAP reaches the preset watt-hour arrival value SIGMAP0 after the watt-hour P reaches the fixed value P0.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for controlling kneading in a hermetic kneader, and particularly to a method for controlling kneading in which items necessary for kneading are individually controlled in a hermetic kneader. It is.

(Prior art and its problems) Generally, in the kneading control method in a sealed kneader,
As shown in Figure 1, the raw materials and filler are divided into several batches.
- As shown in D, a method is adopted in which the materials are added and mixed each time.In order to keep the quality of the kneaded product of the same material constant, it is necessary to control the kneading effect at each step in a constant manner. is necessary.

This kneading effect is replaced by energy given to the kneaded material, and is usually managed in the form of kneading temperature, kneading time, and integrated power.

Therefore, in order to keep the quality of the kneaded product of the same material constant, it is necessary to apply a predetermined amount of energy to the kneaded product in each step.

A sealed kneading machine managed in this way is shown in FIGS. 8 and 9, and the raw material inputted from the raw material input port 10 is transferred to the mixing chamber 13 by a floating weight 12 that is raised and lowered by an air cylinder 11. The two rotors 14 provided inside the mixing chamber 13 rotate the reducer 1 at the same speed or different speeds.
The rotor 1 is driven by a drive source 16 via the rotor 5 and the gap between the two rotors 14 or the inner wall of the mixing chamber 13
A kneading temperature sensing element 17 is provided in the mixing chamber 13 to detect the internal state of the kneader.
A measuring device (accumulation wattmeter) that detects the load condition of the drive source 16 and a timer that detects the operating time (kneading time) for each step of the kneading machine are installed on the control panel 18 near the sealed kneading machine. .

Further, on the control panel 18, three factors, kneading temperature T', kneading time t', and integrated power amount ΣP' read from the reference kneading model as shown in FIG. 2, are set for each step. input devices (digital switches, card reading devices, etc.) are installed, and while the kneading machine is operating, the input values (setting values) of the three factors T', t', Σ
P' is compared with the current measured values T, t, ΣP, and 3
The step is programmed to end when one of the two factors reaches a set value.

However, with the above-mentioned control method, when a rubber material containing a large amount of plasticizer is kneaded using a sealed kneader, there may be slippage between the rotor of the sealed kneader and the rubber material immediately after the plasticizer is injected. is likely to occur.

In a state where slip occurs, as shown in Fig. 3, since no load is applied to the rubber material, the rate of increase in the kneading temperature T and the integrated power amount ΣP is low, and the kneading time t is always set before the set value L. ′ is reached and the step is completed, but since the kneading effect is replaced by the energy given to the kneaded material, the kneading effect is insufficient in such a state, and furthermore, the conventional method as described above This control method has a problem in that it is difficult to judge whether the kneading effect is insufficient because the control contents are as shown in the flowchart shown in FIG.

This invention solves the problems of the conventional ones as described above, and it is a sealed kneader that can stabilize the quality of the kneaded product by controlling the load energy at each step in the sealed kneading machine at a constant level. Kneading machine fi
The purpose is to provide one method.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention, when controlling the kneading in a sealed kneading machine, introduces raw materials and fillers in multiple times, and kneads them each time they are introduced. The temperature, the kneading time, the amount of electricity measured by the wattmeter provided in the drive source of the sealed kneading machine, the lower limit value of the integrated power, and the final value of the integrated power are read from the reference model and set in advance in the control circuit of the sealed kneading machine. The kneading temperature, electric energy, and integrated electric energy, which are the actual measured values, are constantly compared, and the kneading time is started from the time when the electric energy reaches a constant value, and the kneading temperature, electric energy, and The kneading is terminated when the kneading temperature of the integrated power amount reaches a preset value earliest, and the integrated power amount reaches the lower limit value of the integrated power before the power amount reaches a certain value. If the cumulative power amount reaches a preset cumulative power value after the power amount reaches a certain value, the kneading is terminated at that point. When the time reaches the set value and ends, the integrated power amount at that point is compared to see if it exceeds the preset integrated power lower limit value, and if it is less than the integrated power lower limit value, it is determined to be abnormal. The kneading is terminated if the integrated power is equal to or greater than the lower limit value, and means is adopted in which the above is determined each time raw materials and fillers are introduced.

[Effect]

By adopting the above-mentioned means, the present invention can manage the load energy at a constant level for each step of kneading, thereby stabilizing the quality of the obtained kneaded product at a constant level. becomes.

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

5 to 7 show the details of implementing the kneading control method in the kneading machine according to the present invention, in which a sealed kneading machine as shown in FIGS. 8 and 9 is used as in the conventional kneading machine. The control factors in each kneading step shown in FIG. 1 are kneading temperature To, electric power Po, kneading time to, and integrated electric power L! ! Using the value ΣPi and the final integrated power value ΣPo, these are read from the standard kneading model shown in FIG. A power meter is additionally installed in the control panel as a measuring device for detecting the load condition of the drive source 16.

The kneading model mentioned above is a kneading model determined based on the results obtained by actually kneading under various conditions.

First, kneading is started using the pushbutton switch or the like on the control panel 1B, and monitoring and counting of the kneading temperature T, electric energy P, and integrated electric energy ΣP are started, and at the same time, the above-mentioned measured values and the above-mentioned settings Compare with the value.

When performing this comparison, if the kneading temperature T of the three factors reaches the set value To earliest, the step is completed, and the integrated power amount ΣP of the three factors is the earliest. If the integrated power lower limit value ΣPi is reached, it is determined that a slip has occurred and an abnormality has occurred. Furthermore, if the power amount P among the three factors mentioned above reaches the set value Pa earliest, Start counting the kneading time from that point on.

Then, kneading temperature T, kneading time t, and integrated power amount ΣP
While monitoring and counting, the measured value and the set value are compared; that is, if the kneading temperature T reaches the set value To earliest among the three factors, the step is completed; When the integrated power amount ΣP reaches the integrated power attained value ΣPo earliest among the three factors, the step is completed, and furthermore, the power amount P is set to a predetermined value P among the three factors.

The kneading time t starting from the set value t is the earliest.

If the integrated power amount ΣP is equal to or greater than the lower limit value ΣPi of the integrated power, the step is terminated, and if the integrated power amount ΣP is equal to or greater than the lower limit value ΣIJ of the integrated power , the integrated power amount ΣP is the integrated power lower limit value ΣPi
If it was less than that, it was determined that the kneading effect was insufficient, and it was treated as an abnormality.

Next, we created four types of kneading models as shown in Fig. 6 for the reference model shown in Fig. 5, and in this case, the reference model shown in Fig. 5 is (2) in Fig. 6. Yes, also Ao, Bo, Co.

Do indicates the point in time when each kneading model exceeds a predetermined amount of power Pa, and the standard kneading time to is counted from this point.

In the case of the kneading model (1) in Fig. 6, Ao
Counting of the kneading time is started at point A1, but the step is completed at point A1 because the integrated power amount ΣP reaches the integrated power attained value ΣPo before the kneading time t reaches the set value to.

In addition, in the case of kneading model (3), the counting of the kneading time t is started at point Co, and although the integrated power amount ΣP after the elapse of the set time to has not reached the integrated power reached value ΣPo, the integrated power lower limit value ΣPi Because of the above, the step is completed at point C1.

Furthermore, in the case of kneading model (4), kneading time t at point Do
, and since the integrated power amount ΣP after the elapse of the set time to does not satisfy the integrated power lower limit value ΣPl, it is determined that there is an abnormality at point D1.

Therefore, the quality of the kneaded product can be stabilized by controlling the kneading as in each of the above-mentioned kneading models.

〔Effect of the invention〕

By doing the above, this invention constantly compares each factor of the preset reference model with the factor obtained by actually kneading, and determines whether an abnormal state occurs or whether the product is operating normally. This has excellent effects such as making it possible to distinguish between different cases, thereby making it possible to maintain a constant quality of the kneaded material.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the operation of kneading work in a sealed kneading machine, Fig. 2 is a diagram showing a conventional standard kneading model, Fig. 3 is a diagram showing a kneading model when an abnormality occurs, and Fig. 4 is a diagram showing the kneading model when an abnormality occurs. 5 is a diagram showing a kneading model that is the standard of this invention, FIG. 6 is a diagram showing a model of an integrated power curve, FIG. 7 is a diagram showing a flow according to this invention, and FIG. FIG. 9 is a schematic diagram showing a sealed kneading machine. To: Kneading temperature (set value) T: Kneading temperature (measured value) Po: Electric energy (set value) P: Electric energy (measured value) Value) ΣPO・・・Accumulated electric energy (set value) ΣP・・・
...Integrated power consumption (measured value) ΣPi...Integrated power lower limit value (set value) to...Kneading time (set value) t...Kneading time (measured value) 10... Raw material input port 11... Air cylinder 12... Floating weight 13...
... Mixing chamber 14 ... Rotor 15 ... Speed reducer 16 ... Drive source 17 ... Kneading temperature thermosensor 18 ... Control Panryuriki 1 2nd figure o t' B! +Darkness (5th generation)
Figure 3 Ot-time order (sec) Figure 4 Figure 5 0 L-1-1 Time order sec) Figure 6 Figure 7 Figure 9 Procedure amendment (practical) June 12, 1988 1, 1986 Patent Seal No. 32973 2
, Title of the invention: Kneading system in a sealed kneader
Method 3: Relationship with the person making the amendment Patent applicant address: 1-12-15 Shiba Daimon, Minato-ku, Tokyo Name (43B) N.OK. Co., Ltd. 4, Agent ■102 Ta (Whale 262-47)
61) 'Address: 3-8-13 Kudanminami, Chiyoda-ku, Tokyo I Kyouen no Iihaya wo Kake 9I Kenyohi Kyoen 7 Contents of the amendment (1) Separate the "Scope of Claims" in the specification Correct as shown below. (2) "[Means for solving the problem]" on page 6, line 8 of the same book is amended to "[Means for solving the problem]". (3) Change the “lower limit value of integrated power” on the fourth line of page 4 of the same book to “
The abnormal value of integrated power and the normal lower limit value of integrated power are corrected. (4) Correct the "lower limit value of integrated power" on the 4th line of page 7 of the same book to "abnormal value of integrated power". (5) Same book, same page, lines 1O, 11, and 1
Change the "accumulated power lower limit value" in the second line to "accumulated power normal lower limit value"
and correct it. (6) “Integrated power lower limit value ΣPi” on page 8, line 11 of the same book
J is "accumulated power abnormal value ΣPl, integrated power normal lower limit value Σ
P8” is corrected. (7) “Integrated power lower limit value ΣPi” on page 9, line 10 of the same book
" is corrected with "integrated power abnormal value ΣPiJ." (8) Same book, page 10, lines 7, 8, and 1.
The "accumulated power lower limit value ΣPi J" in the 0th line is corrected to "accumulated power normal lower limit value ΣPt". (9) "The lower limit value of integrated power ΣPiJ on the 8th and 12th lines of page 11 of the same book is corrected to the normal lower limit value of integrated power ΣPzJ. Correct the "integrated power amount (set value)" to "integrated power amount reached value (set value)". θD Correct "ΣPi... lower limit value of integrated power" in the second line of page 13 of the same book to "ΣP, ... - abnormal value of integrated power". ■ “(Setting value)” on the second line of the same page of the same book and r on the third line
ΣP, during the kneading time (set value)
...Insert the integrated power normal lower limit value (set value) J. - Correct the drawings (Figures 5, 6 and 7) as attached. 8. Attachment with list of attached documents...1 copy of drawings (
(Figs. 5, 6, and 7)...In one attached document Claims When controlling the kneading of a sealed kneader, raw materials and fillers are charged in multiple batches, and each The kneading temperature (To) and kneading time (to
), the amount of power (Po) from the power needle provided in the drive source (16) of the sealed kneading machine, the abnormal integrated power value (ΣP, ), the normal lower limit value of integrated power (ΣPz), and the achieved integrated power value (ΣP)
o) are read from the reference model and set in advance in the control circuit of the sealed kneading machine, and the kneading temperature (T), electric power (P), and integrated electric power (ΣP) which are these and their actual measured values. The kneading time (1) is started from the time point (Po) when the electric energy (P) becomes a constant value, and the kneading temperature (T), electric energy (P) and integrated electric energy are constantly compared. When the kneading temperature (T) of (ΣP) reaches the preset value (To) earliest, kneading ends, and the electric power (P) becomes a constant value (Po). When the integrated power amount (ΣP) reaches the integrated power abnormal value (ΣP, ), an abnormality is displayed, and after the power amount (P) reaches a certain value (Po), the integrated power amount (ΣP, ) is displayed. When ΣP) reaches the preset cumulative power attainment value (ΣPo), the kneading ends at that point, and when the kneading time (1) reaches the set value (to) and ends, It compares whether the integrated power amount (ΣP) at that point exceeds the preset integrated power normal lower limit value (ΣP8), and if it is less than the integrated power normal lower limit value (ΣP), it is determined to be abnormal, and the integrated power A method for controlling kneading in a kneading machine, characterized in that the kneading is terminated if the electric power is equal to or higher than the normal lower limit value (ΣP), and the above is determined each time raw materials and fillers are introduced. 5m Figure 86 Figure 7

Claims (1)

[Claims] When controlling the kneading of a sealed kneader, raw materials and fillers are charged in multiple batches, kneaded each time, and the kneading temperature (To) and kneading time (to) are controlled at each kneading time.
), the power amount (Po), the lower limit of integrated power (ΣPi), and the final integrated power value (ΣPo) are read from the reference model by the wattmeter provided in the drive source (16) of the sealed kneader, and the power of the sealed kneader is determined. The kneading time (t) is set in advance in the control circuit, and the kneading temperature (T), electric power (P), and integrated electric power (ΣP), which are the actual measured values, are constantly compared, and the kneading time (t) is set as described above. The kneading temperature (T) of the kneading temperature (T), the electric power (P), and the integrated electric power (ΣP) is started from the time (Po) when the electric power (P) reaches a certain value. The kneading is finished when the set value (To) is reached earliest, and the integrated power amount (ΣP) reaches the lower limit value of the integrated power before the power amount (P) reaches a certain value (Po). (ΣPi), an abnormality is displayed, and after the power amount (P) reaches a certain value (Po), the integrated power amount (ΣP) reaches the preset integrated power attainment value (ΣPo). If the kneading time (t) reaches the set value (to), the kneading ends at that point, and if the kneading time (t) reaches the set value (to), the integrated power amount (ΣP) at that point becomes the preset integrated power. It compares whether or not it exceeds the lower limit value (ΣPi), and if it is less than the lower limit value of integrated power (ΣPi), it is determined to be abnormal, and if it is above the lower limit value of integrated power (ΣPi), the kneading is terminated. A method for controlling kneading in a kneading machine, characterized in that this is determined each time raw materials and fillers are charged.