JPH09308995A - Actual data output method of hot press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To output appropriate data by making an output interval of actually measured values of a forming condition of hot press variable or at alarming time narrowing an interval time before and after alarming. SOLUTION: In the actually measured data output method of hot press, a forming condition of temp., pressure, etc., at an arbitrary time interval for a forming time of one work cycle decided beforehand is set, based on the forming condition, the actually measured data at least in one set section arbitrarily set in one work cycle is outputted, further this data output interval is made individually variable. The output interval of data is allotted in one cycle by an output timer, from the actually measured data stored in a memory device at the min sampling interval smaller than this output interval, the actually measured data only of output interval in the set interval is outputted. Further, when alarm to show abnormality of forming work is generated, in a prescribed section before and after alarming the set output interval of actually measured data is changed to be narrowed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to forming a hot press having a long working cycle for forming a product,
The present invention relates to a method for outputting various actually measured value data when the hot plate temperature, the surface pressure, and the vacuum pressure rise and fall.

[0002]

2. Description of the Related Art A hot press generally comprises a plurality of heating plates arranged in parallel in the vertical direction between a fixed platen and a movable platen, and a prepreg, which is a material of a laminated product, is positioned between the heating plates to move the platen. The board is moved and the prepreg is thermocompression bonded.

An example of this structure will be described with reference to FIG. 7. A hot press 1 includes a box-shaped frame 11 mounted on a base 10, a cylinder 12 provided under the frame 11, and a ram 13 of the cylinder 12. The movable platen 14 attached to the frame 1 and the frame 1 so as to face the movable platen 14
1. Upper board 15 fixed to the upper part of 1, movable board 14 and upper board 1
5, a plurality of heat plates 16 arranged in parallel vertically
And a carrier plate 18 on which a prepreg 17 (only one is shown in the drawing) is placed.
Further, the hot press 1 may form a chamber hermetically sealed by a cover to create a vacuum inside the chamber.

In the molding of such a hot press, the molding conditions such as the heating temperature and the surface pressure of the hot plate are controlled by a controller of the apparatus with respect to a plurality of time intervals arbitrarily assigned in one working cycle. Temperature and pressure are set. In addition, on the temperature control device side of the device corresponding to this temperature setting, if necessary, by setting a timer for opening and closing the valve, it is possible to control the heating process and cooling process multiple times, all, The control in one work cycle is performed by setting the numerical value of time.

These numerical values can be set by the operator while watching the CRT screen by operating the setting panel.
A process of a procedure according to a predetermined program is searched and selected from the molding condition list.

However, such hot press molding is carried out over a long period of time, for example, one working cycle of 120 minutes. Therefore, in this molding,
The value of the finished product in one work cycle is very high, and the quality of the product greatly affects the productivity and the cost increase.

Therefore, it is very important to monitor each actually measured value data during one working cycle, especially various actually measured value data (molding data) when the hot plate temperature, the surface pressure and the vacuum pressure rise and fall. .

However, if all of the molding data is output, a huge amount of data will be obtained depending on the output interval, and the recording paper, storage capacity, etc. in the printer or external memory that receives the molding data will be the amount of data. Increases in proportion to. As a result, the analysis is difficult,
It becomes extremely uneconomical because the cost and storage space increase.

Further, if the output interval is wide and the number of data is small, the required control fluctuation state cannot be known, and when a defective product occurs, it is not possible to determine what molding conditions were used for processing. The problem also occurs.

For this reason, in the field of injection molding machines, for example, Japanese Patent Publication No. 7-4843 discloses a data output method for injection molding machines. According to this disclosure, when outputting molding data of an injection molding machine, molding data including error contents in a shot in which a molding failure occurs and molding related to a specified number of shots immediately before and / or immediately after the shot. Only the data is output sequentially.

In this data output method, the molding data is sequentially detected in accordance with the operation of the injection molding machine and is temporarily stored in, for example, a controller attached to the injection molding machine. On the other hand, when a molding failure occurs, only molding data relating to the generated shot and a plurality of parameters related to a predetermined number of shots before and after this shot are designated and sequentially output. That is, only a necessary part of all molding data is extracted and output.

In this case, since the molding data relating to the shot in which the molding failure occurs includes error contents such as an error code, an error occurrence time, an error name, etc., it is easy and accurate to analyze the cause of the abnormality. To be able to do.

[0013]

However, the hot-pressed product is manufactured by placing a prepreg between a number of hot plates and thermocompression bonding, and the molding time is long and the product is produced by an injection molding machine. The object to be controlled is different from that of a product to be molded, which has a short one-shot molding time.

That is, in the hot press, with respect to one molding condition, for example, the temperature of a hot plate, the temperature setting is changed in multiple steps within one working cycle time, and a predetermined temperature holding step and a temperature increase during that step are performed. In the descending transition step, PID control is required individually, and by detecting the abnormality of the control and outputting the data that catches the precursor to the occurrence of the alarm, it is possible to take countermeasures and correct it early. I have to

Therefore, it is desirable to reduce the actual measurement data in the section where the parameters of the molding conditions can be held in a stable state, and conversely increase the actual measurement data in the section where the fluctuation is large.

In view of the above circumstances, the present invention provides a hot press that outputs only necessary data by varying the output interval of the actual measurement data of the molding conditions that changes momentarily during one working cycle of the hot press. The purpose is to provide a data output method of.

Further, as another object, such an output interval of actually measured data is arbitrarily set, and at the time of an alarm due to an abnormality of the hot press, the interval time before and after the alarm can be narrowed and output. It is to provide a data output method before and after an alarm is issued.

[0018]

In order to achieve the above-mentioned object, the present invention provides a method which is predetermined in hot pressing.
Molding conditions such as temperature and pressure are set at an arbitrary time interval with respect to the molding time of the work cycle, and the measured value data is set in at least one set section arbitrarily determined in the one work cycle based on the molding condition. Is output, and the data output interval can be changed individually.

As a result, the measured values of various data such as temperature, pressure, etc., which change momentarily during one cycle, can be output only in an arbitrarily set setting section at a frequency necessary to output the data, such as a printing device, a CRT screen or It can be output to a personal computer etc. by communication.

This output method is as described in each claim. According to the configuration of claim 2, the data output interval is
It is a print output interval that represents the number of data outputs required for the set section assigned by the output timer in one work cycle. From the actual measurement value data stored in the storage device at the minimum sampling interval smaller than this output interval. Only the measured value data in the set section is output.

Further, according to the third aspect, when an alarm indicating an abnormality in the molding operation is generated in a set section determined based on the molding condition, a predetermined section before and after the alarm is generated, a determined actual measurement value is determined. The feature is that the data output interval is changed so as to be narrowed.

In this case, an arbitrary time P (minutes) before the alarm is issued
The problem can be solved by making it possible to set an arbitrary time Q (minute) after the alarm is reset and always storing the actual measurement data only for the time P (minute).

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. According to the method of the present invention, in press molding using a hot press, actual measurement data such as the temperature and surface pressure of a hot plate which changes moment by moment is sent to an output device such as a personal computer by a printer device or communication during one working cycle. This is the method of output.

This data is usually output to a printout output for printing on paper, a hardcopy output for displaying the data on the CRT screen, an RS-232C output for transmission to a terminal computer, or all output devices. You can choose to output at the same time.

First, the operator first sets the parameters of the molding conditions on the CRT screen. This setting is
As shown in FIG. 1, for example, a desired temperature pattern (curve X) is determined by setting the hot plate temperature for one work cycle time.

Then, based on the molding conditions of this temperature change, at least one set section arbitrarily arranged by the output timer, which is arranged at the lower left of the CRT screen of FIG. 2, is assigned according to the temperature pattern in this case. Multiple sections A
The required data output interval is determined for each of E to E.

In this case, data is output for all the assigned sections in one working cycle time of the hot press, and the output intervals of the data are also set individually. However, this data output is not only for grasping the whole by the working conditions, but since it is only necessary to obtain the data of the necessary portion in one working cycle time, the number of set sections may be one, The person can arbitrarily change the number of set sections and the data output intervals of the sections.

In the present embodiment, it is necessary to monitor the temperature more rigorously with respect to the rising section (A, C) of the temperature change in which the temperature changes abruptly. The sampling is reduced in the section E of the cooling process.

For the temperature setting in this example, the temperature pattern shown in FIG. 1 is adopted. That is, section A (0 to 1
In 5 minutes), heating 1 determined by the timer setting arranged in the right column of FIG. 2 is executed to raise the temperature to 40 to 120 ° C. In the section B (15 to 30 minutes), heating 2 is executed and the temperature is kept at 120 ° C. C section (30 to 45
In (min), heating 3 is performed to raise the temperature to 120 to 180 ° C. In the section D (45 to 90 minutes), heating 4 is executed and the temperature is kept at 180 ° C. Furthermore, section E (9
(0 to 120 minutes), the heating 5 is omitted, and the cooling control is performed by the cooling 1 similarly determined by the timer setting in FIG. 2 for 90 to 100 minutes, and the cooling 2, the cooling 3, and the cooling 4 are respectively performed. 100-110 minutes, 110-119 minutes, 119-
A different cooling process is performed for 120 minutes to lower the hot plate temperature to the original 40 ° C.

In this way, each turning point of the heating temperature is determined,
The temperature setting pattern required by the operator is determined.

The numerical values shown in the chart of FIG. 2 are displayed on the CRT display screen, and are set using the control means and input / output device shown in the control block of the hot press in FIG.

This control block is composed of a controller 2, detection means such as a temperature sensor, a CRT display 3, a setting panel 4, a storage device 5, a printer 6 and the like.

The controller 2 causes the CRT display 3 to display each set value of the molding conditions set by the operator through the setting panel 4, and controls the molding conditions of the hot press according to these set values. Further, the controller 2 stores the actual measurement value data obtained from the detection means such as the temperature sensor in the storage device 5 and stores it therein. Further, the measured value data required by the operator can be output to the printer 6 in accordance with the print output interval set on the setting panel 4.

The setting panel 4 is a keyboard provided with various numeric keys, function selection keys, etc., and is used to set molding conditions, select print output, and output intervals of data (print output intervals are shown in the display screen of FIG. 2). , Etc.) can be individually set, or the already set pattern can be selected from the molding condition list and displayed.

That is, in the setting value printing selection for printing out, one of the four selections arranged in the upper part of the screen of FIG. 2, that is, the molding condition, the molding condition list, and the machine sets 1, 2 and 3 is selected. Operator chooses. Also, the print selection of the actual measurement value data for printout / hard copy is 0 = OFF, 1 = printout, 2
= Hard copy, 3 = RS-232C, 4 = Simultaneous output can be selected.

Further, in printing when an alarm is issued during hot pressing and automatic printing of measured values during pressing, each set section defined by the output timer and the data output interval in that section are set. .

Further, in the column on the right side of the CRT screen shown in FIG. 2, the temperature of the heat source supplied to the hot plate set on the setting screen of FIG. 5, the surface pressure, and the heating and cooling timer time are displayed.

As described above, each numerical value of the molding condition set by the operator on the setting panel 4 is set to CR via the controller 2.
The actual measurement value data input to the T display 3 during operation of the hot press is detected by the temperature sensor group of the hot press 1, and the data information is instructed by the controller 2 at a time interval of a minimum setting unit in the storage device. Stored in 5. Here, with respect to the set temperature condition, the data output of the actual measurement value actually detected from the temperature sensor or the like is output only at a certain fixed time interval, so if the interval is set, Editing is difficult because there is no data that is needed most or the amount of data is very large.

In order to solve this, in the present invention, on the printout screen, the output interval of the measured value data is changed for one or a plurality of set sections arbitrarily determined in one cycle. Only the necessary data in the section where the control status is desired to be known can be output.

Therefore, in this embodiment, the print output intervals in the sections A to E are 0.5 minutes and 1.0 minutes, respectively, in accordance with the desired sampling number for each section, corresponding to the temperature setting pattern. It is set to 0.5 minutes, 5.0 minutes, and 10.0 minutes.

Further, the setting of the surface pressure acting between the hot plates is determined corresponding to the temperature setting, for example, the curve Y shown by the broken line in FIG. 1 is drawn.

The data sampling interval in this embodiment is 0.1 minute which is the minimum setting unit of the timer, and the actual measurement value data of the molding conditions are sequentially stored and stored in the storage device at this time interval. In FIG. 4, the controller 2 receives the detection signal from the temperature sensor group provided in the hot press 1, and the data is sequentially stored and stored in the storage device 5.

Therefore, the output interval of the data set for each set section can be changed by the instruction from the controller 2.
From the measured value data stored in the storage device every 0.1 minutes, the data is read at a desired print output interval, and only the necessary data is directly printed out on a predetermined output device, for example, the printer 6.

Further, in the present invention, when an alarm is generated due to an abnormality in the molding conditions, as shown in FIG. 3, an output interval finer than the output interval of the section is set so that the data can be output in more detail.

Therefore, the arbitrary time P before the alarm is issued and the arbitrary time Q after the alarm is reset can be set in advance, and the measured value data for only the time P (minutes) is always stored in the storage device 5. It is designed to let you.

Then, for example, the time P is 15 minutes and the time Q is
If the alarm is preset to 10 minutes, as shown in FIG. 3, if an alarm occurs 65 minutes after the start of molding and the alarm state continues for 5 minutes, 15 minutes before the alarm is issued (50 minutes after the start of molding). 10 minutes after the alarm is released (80 minutes after the start of molding), that is, 80-50 =
For 30 minutes, the initial data output interval is 5
Even in minutes, the time interval is narrowed to 0.5 minutes so that the actual measurement value data can be printed on the output device.

As a result, when an abnormal molding condition occurs, more data necessary for the analysis can be output, and effective countermeasures can be taken.

In the above description, the setting of the heating temperature, which is a particular problem among the molding conditions, has been described in detail. However, other molding conditions such as the surface pressure, the position of the cylinder ram, and the degree of vacuum in the chamber are set. You can also do it.

In this case, in the control device of the hot press machine of the present invention, in order to specify each setting value input by the setting panel, as shown in FIGS. 5 and 6, the screen viewed by the operator can be simply displayed. By switching, a plurality of various molding conditions can be displayed.

On the setting screen 1 of FIG. 5, the temperature and the surface pressure of the hot plate are displayed in a graph, and the temperature setting and the surface pressure setting value with respect to the time interval at each inflection point that determines the setting pattern are shown. There is. Further, in the timer setting and alarm shown in the rightmost column of the screen, for example, section A of heating 1 (0 to 15)
Min), the allowable fluctuation range of temperature is specified to be ± 5 ° C, and an alarm will be issued if this fluctuation range is exceeded. Similarly, in the section B of heating 2, the allowable fluctuation range is set to ± 1 ° C, and the section C of heating 3 is set to ± 5 ° C.

In this way, when the temperature is raised (A, C section), the temperature is monitored by ± 5 ° C. around the set value, and during constant temperature control (B, D section), the set value is centered. Is monitored at ± 1 ° C, and when the temperature drops (E section), ± 10 ° around the set value
℃ is monitored, especially in places where monitoring is required, the fluctuation range of the set temperature is reduced to suppress variations in molding conditions, and when it is out of the set range, it is quickly caught and an alarm is output. This stabilizes the temperature control in one work cycle.

The setting screen 2 in FIG. 6 is a display for setting the position indicating the distance between the hot plates and setting the degree of vacuum in the chamber of the hot press machine.

In the present embodiment, these molding conditions are not set. It should be noted that on this screen, as a backup control method, there are selections of surface pressure control 1 and position control 0, and further items of hydraulic pressure alarm setting and position alarm setting are provided. With this oil pressure alarm setting, the pressing force per unit area of the cylinder ram that raises and lowers the hot plate can be set, and in this example, ± 2.0 kg when moving up and down, and ± 1.0 kg during each holding process during pressurization and cooling. The fluctuation range is set to kg. Also,
In the position alarm setting, the fluctuation range of the cylinder ram position is set to ± 3.00 mm during the compression process and ± 2.50 mm during the holding process.

As described above, according to the present invention, corresponding to each molding condition, a predetermined set value in the molding condition can be set at an arbitrary time interval within one working cycle, and it is predetermined. The fluctuation range can be set within a desired range centering on the set value, finely controlled at the necessary place, and as a result, the actual measurement value data detected by the sensor provided in the hot press machine can be set at an appropriate frequency. Obtainable. Further, when the molding condition is out of the set condition, an alarm can be promptly output, and the measured value data before and after the alarm can be output to an output device such as a printer.

[0055]

As described above, according to the method of the present invention, in a portion where the fluctuation range with respect to the molding conditions such as heating temperature and the like is large, more data measured values are output and a portion particularly required. You can monitor it in detail,
If the set fluctuation range is exceeded due to abnormal molding conditions, an alarm is generated and the measured value data before and after the alarm is generated are output finely at intervals that are narrower than the output interval in this predetermined section. it can. As a result, it is possible to secure an appropriate amount of actually measured value data, analyze a molding defect, take countermeasures, and set optimum molding conditions for the next cycle at an early stage.

[Brief description of drawings]

FIG. 1 is a molding condition setting diagram showing a control pattern of actually measured value data of a hot press according to the present invention and a printing interval for each time interval corresponding thereto.

FIG. 2 is a data table for setting molding conditions and print output intervals according to the present invention.

FIG. 3 is a relationship diagram showing a section setting when changing a print output interval at the time of an alarm occurring within the hot plate temperature molding condition according to the present invention.

FIG. 4 is a schematic configuration diagram showing a control block of a hot press according to the present invention.

FIG. 5 is a data diagram showing a temperature and surface pressure setting screen according to the embodiment of the present invention.

FIG. 6 is a data chart showing a position and vacuum degree setting screen in the embodiment of the present invention.

FIG. 7 is a partial cross-sectional view showing a schematic configuration of a conventional hot press used in the method of the present invention.

[Explanation of symbols]

 1 Hot Press 2 Controller 3 CRT Display 4 Setting Panel 5 Storage Device 6 Printer A to E Section

Claims (4)

[Claims] 1. A molding condition such as temperature and pressure is set at an arbitrary time interval with respect to a molding time of one working cycle which is predetermined in a hot press, and within the one working cycle based on this molding condition. A method for outputting actually measured value data of a hot press, characterized in that actually measured value data is output in at least one arbitrarily set section, and an output interval of this data can be individually changed. 2. The data output interval is a print output interval representing the number of data outputs required for a set section assigned by an output timer in one work cycle, and is stored at a minimum sampling interval smaller than this output interval. The method according to claim 1, wherein only the actual measurement value data in the set section is output from the actual measurement value data stored in the device. 3. When an alarm indicating an abnormality in molding operation is generated in the set section defined based on molding conditions,
3. The method according to claim 1, wherein a predetermined section before and after the alarm is issued is changed so as to narrow an output interval of the determined actual measurement value data. 4. At least recording for output of measured value data,
4. A method according to any one of claims 1 to 3, characterized in that it comprises one or more output formats of storage, display, communication.