JP3230707B2 - Mold heating control method for resin molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the heating of a molding die of a resin molding apparatus, which controls the heating of the molding die in accordance with setting data for specifying the ON state or the OFF state of the heater together with the time.

[0002]

2. Description of the Related Art A resin molding apparatus, for example, a resin molding apparatus for sealing a semiconductor component with a resin, is controlled by a control device 1 having a structure as shown in FIG.
That is, the display 3 and the keyboard 4 are connected to the man-machine interface unit 2 composed of a microcomputer or the like, and are used to perform setting input of molding condition data and various monitors. The man-machine interface unit 2 is configured to transmit and receive data to and from the control unit 5. The control unit 5 controls each mechanism 9 of the resin molding apparatus, that is, each motor 9 via a driver 8 based on inputs from various sensors 7 such as a power switch 6 and a temperature sensor. Control, and further controls the heater 11 for heating the mold.

As a method of controlling the heating of the mold, a so-called weekly timer as shown in FIG. 3, for example, is stored in the man-machine interface unit 2, and the control unit is controlled based on an operation schedule based on the weekly timer. 5, a heater control signal is output, whereby the heater 11 is controlled. This weekly timer switches the heater 11 on state (state in which the mold is controlled to reach a predetermined temperature) or heater 11 off state (disconnected state) for each day of the week. And a set of specified setting data, and the operator preliminarily inputs the setting using the keyboard 4 or the like.

FIG. 6 is a flowchart showing a conventional processing procedure based on the weekly timer. First, the man-machine interface unit 2 loads the current day of the week (for example, Monday) from a built-in clock (step S).
Along with 1), the current time (for example, 12:30) is loaded (step S2). Next, in step S3, the first setting data of the day (day of the week) (if Monday in the example of FIG. 3, the setting data of “ON; 6:00”) is searched, and in step S4, the day (day of the week) is searched. It is determined whether or not there is setting data in ()). If there is no setting data on that day of the week (No in step S4), a heater control off signal for turning off the heater 11 is output (step S10).

On the other hand, if there is setting data on the day (day of the week) (Yes in step S4), it is determined in step S5 whether the current time is after the time indicated in the setting data. . If the current time is after the time indicated in the setting data (Yes in step S5)
s) Until the search for all the setting data on the day (day of the week) is completed (step S6), the next setting data is searched in order from the first setting data on the day (day of the week) (step S7), and from step S5. Is repeated.

If the current time is earlier than the time specified in the setting data (N in step S5)
o) In step S8, it is determined whether or not the setting data is the first setting data of the day, that is, whether or not the process has proceeded to step S8 only after passing step S5 once. If (Yes), the process proceeds to step S10 to output a heater control off signal in consideration of safety.

If No in step S8,
Alternatively, if all the setting data of the day has been searched in step S6 (Yes), in step S9, the heater is set in accordance with the setting data immediately before the setting data (on state or off state). Outputs control signal.

In the example shown in FIG. 3, if the current time is, for example, 12:30 on Monday, first, when passing through step S5 for the first time, the first setting data on that day (Monday) is instructed. The time is compared with 6:00. Since the current time is after the time indicated in the setting data (Yes in step S5), the next setting data (the second setting data on Monday) is searched in step S7, and the process returns to step S5 to return to the current time. (12:30)
And the time designated by the setting data, that is, 12:00.

In this case as well, the answer is Yes in step S5, the next (third) setting data is retrieved in step S7, and in the third step S5, it is compared with 13:00, so that the step is finally completed. No in S5. In this case, No is obtained in step S8, and in step S9, the heater 11 is turned off according to the instruction of the immediately preceding, that is, the second setting data.

[0010]

Generally, this type of resin molding apparatus is used with the power on for 24 hours, regardless of whether the apparatus is operating or not. In addition, there is a case where the vehicle is continuously operated for 24 hours or more. During operation, the heater 11 is, of course, turned on. However, during operation of the apparatus, the power of the apparatus may be turned off by an operator for some reason such as occurrence of a trouble.

However, in the conventional control method shown in FIG. 6, when the power switch 6 of the apparatus is turned on, the state of the heater 11 may not return to the state specified by the setting data. For example, the operation was continued continuously from the previous day, the power of the device was once turned off at an early time of the day, and the power switch 6 of the device was turned on again before reaching the time indicated by the first setting data of the day. In such a case, the heater 11 may be turned off although the heater 11 should be turned on.

In the example of FIG. 3, for example, the place where the heater 11 is continuously operated (the heater 11 is in the ON state) is changed to
When the power of the apparatus is turned off at 0 minute and turned on again at 5:45, the current time (5: 4
5 minutes) has not reached the time (6:00) indicated by the first setting data of the day, so the result is No and the process proceeds to step S8, where the setting data is the first setting data of the day. Yes because there is, step S1
At 0, the heater 11 is turned off.

In such a case, if the operator does not notice that the heater 11 is in the off state, the temperature of the mold decreases, so that the apparatus cannot be operated immediately and the operating rate decreases. Or the operation may be restarted without noticing the temperature drop, resulting in a molding defect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to control the heating of a mold according to an operation schedule based on setting data. An object of the present invention is to provide a method of controlling heating of a molding die of a resin molding apparatus, which can return to a heater control state as instructed by setting data when a power switch is turned on thereafter.

[0015]

A method of controlling heating of a molding die of a resin molding apparatus according to the present invention is a method of controlling heating of a molding die according to an operation schedule based on set data. When the power switch is turned on and the time is before the time indicated in the first setting data of the day, the heater is turned on or off in accordance with the most recent setting data from the day to the past. The feature is that it is made to do. Also,
In this case, the setting data can be set for each day of the week, and the same operation schedule can be repeated every week.

[0016]

According to the above means, when the power switch of the resin molding apparatus is turned on and the time point is earlier than the time indicated by the first setting data of the day, the most recent date back to the past from that day. The heater is turned on or off according to the setting data. Therefore, for example, the device is continuously operated from the previous day, the power of the device is once turned off at an early time of the day, and before the time indicated by the first setting data of the day, the power switch of the device is again turned on. Even when the power is turned on, the heater returns to the original state before the power was turned off.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a resin molding apparatus for sealing a semiconductor component with a resin will be described below with reference to FIGS. It should be noted that the hardware configuration of the control device 1 shown in FIG.
Since the example of the setting data of the weekly timer shown in (1) is common to the present embodiment, a new illustration is omitted, and the same reference numeral is used.

Accordingly, the resin molding device, which is a resin molding device, is controlled by the control device 1 having a configuration as shown in FIG. That is, the display 3 and the keyboard 4 are connected to the man-machine interface unit 2 composed of a microcomputer or the like, and are used to perform setting input of molding condition data and various monitors. The man-machine interface unit 2 is configured to transmit and receive data to and from the control unit 5. The control unit 5 controls each mechanism 9 of the resin molding apparatus, that is, each motor 9 via a driver 8 based on inputs from various sensors 7 such as a power switch 6 and a temperature sensor. Control, and further controls the heater 11 for heating the mold.

As a method of controlling the heating of the mold, a so-called weekly timer as shown in FIG. 3, for example, is stored in the man-machine interface 2, and a heater is supplied to the controller 5 by an operation schedule based on the weekly timer. By outputting a control signal, the heater 11 is controlled. This weekly timer switches the heater 11 on state (state in which the mold is controlled to reach a predetermined temperature) or heater 11 off state (disconnected state) for each day of the week. A set of setting data specified together with the setting data is displayed on the display 3 by the operator in advance using the keyboard 4 or the like.

In this embodiment, the control device 1
Executes the processing based on the weekly timer in accordance with the flowchart of FIG. Here, the present embodiment is different from the flowchart of FIG. 6 described in the conventional example in steps S21 to S24. Thereby, in the present embodiment, the power switch 6 of the device is
When the is turned on, if the time is before the time indicated in the first setting data of the day, the heater is turned on or off according to the last setting data that goes back to the past from the day. It is configured.

First, the man-machine interface unit 2 loads the current day of the week (for example, Monday) from the built-in clock (step S11) and also loads the current time (for example, 12:30) (step S1).
2). Next, in step S13, the first set data of the day (day of the week) (if Monday in the example of FIG. 3, the set data of “ON; 6:00”) is searched, and in step S14, the day (day of the week) is searched. It is determined whether or not there is setting data in ()). If there is no setting data on that day of the week (No in step S14), step S2 described later
The processing from 1 is executed.

On the other hand, if there is setting data on that day (day of the week) (Yes in step S14), step S1
At 5, it is determined whether or not the current time is after the time indicated in the setting data. If the current time is after the time specified in the setting data (Yes in step S15), the first time of the day (day of the week) is continued until the search for all the setting data of the day (day of the week) is completed (step S16). The next setting data is searched in order from the setting data (step S17), and the processing from step S15 is repeated.

If the current time is earlier than the time specified in the setting data (N in step S15)
o) In step S18, it is determined whether or not the setting data is the first setting data of the day, that is, whether or not the process has proceeded to step S18 only after passing through step S15 once. If (Yes), the processing from step S21 described below is executed.

If No in step S18, or if all the setting data of the day has been searched in step S16 (Yes), then in step S19, one step before the setting data is performed. The heater control signal is output according to the setting data (on state or off state).

Here, as an example in FIG. 3, if the current time is, for example, 12:30 on Monday, the first time that step S15 is passed, the day (Monday)
Is compared with the time specified in the first setting data of, that is, 6:00. Since the current time is later than the time indicated in the setting data (Yes in step S15), step S15 is executed.
At 17, the next setting data (the second setting data on Monday) is retrieved, and the process returns to step S15 to compare the current time (12:30) with the time indicated by the setting data, that is, 12:00. Is done.

In this case as well, the result is Yes in step S15, the next (third) setting data is retrieved in step S17, and 13:00 is set in the third step S15.
No is finally obtained in step S15 by being compared with 0 minutes. In this case, No is obtained in step S18, and in step S19, the heater 11 is turned off according to the instruction of the immediately preceding, that is, the second setting data.

If there is no setting data for the day of the week in step S14 (No), and if the setting data is the first setting data for the day in step S18 (Yes), step S21 is performed. In, the last setting data of the previous day of the day is searched, and step S22
It is determined whether there is setting data on the previous day. If there is no setting data on the previous day (No in step S22), in step S23,
It is determined whether or not the previous day is the current day of the week. Unless the current day is the current day of the week (No), the process returns to step S21, and it is sequentially determined whether or not there is setting data on the previous day of the week.

By this processing, Ye is determined in step S22.
When s is reached, the earliest setting data that has been traced back has been searched. As a result, in step S24, a heater control signal is output according to the preceding setting data. On the other hand, the search for the presence or absence of the setting data of the previous day is repeated in order, and if there is no setting data even after returning to the same day of the week (Yes in step S23), the heater 11 is turned on in step S20. It is turned off.

As another example shown in FIG. 3, if the current time is, for example, 5:45 on Monday, step S15
Is passed for the first time, is compared with the time specified in the first setting data of the day (Monday), that is, 6:00, and No
And the process proceeds to step S18. In this case, since the setting data (6:00) is the first setting data, “Yes” is determined in step S18, and step S21 is performed.
Proceed to. When the process goes through the step S21 for the first time, there is no setting data on the previous day (Sunday).
No in step S2, and No in step S23, and returns to step S21.

When the process goes through the step S21 for the second time, the last setting data on Saturday is searched, and the setting data exists (the data turned ON at 6:00).
And a heater control signal is output in accordance with the set data. In this case, the heater 11 is turned on. Therefore, for example, when the apparatus is continuously operated (the heater 11 is in the ON state), the power of the apparatus is temporarily turned off at 5:30 on Monday due to a trouble or the like, and the power is turned on again at 5:45. However, the heater 11 is turned on, and the molding operation can be promptly restarted.

FIG. 4 shows a case where the weekly timer is used. Here, the heater 11 is turned on at 13:30 on Monday, and one week later at 13:30 on Monday.
The operation schedule is such that the heater 11 is turned off at 0:00. As is clear from the above description of the flowchart, in the case of FIG.
Only when the power switch 6 of the apparatus is turned on between the minutes and 13:30, the heater 11 is turned off,
If the power switch 6 is turned on on other days and times,
The heater 11 is turned on.

Further, as shown in FIG. 5, if there is no setting data as a weekly timer, no matter when the power switch 6 of the apparatus is turned on, Yes in step S23 of the flowchart of FIG. The off signal is output in step S20, and the heater 11 is turned off.

As described above, according to the present embodiment, when the power switch 6 of the resin molding apparatus is turned on and the time point is earlier than the time specified in the first set data of the day, the past time from that day is used. , The heater 11 is turned on or off in accordance with the previous setting data. Therefore, for example, the device is continuously operated from the previous day, the power of the device is temporarily turned off at an early time of the day, and before the time indicated by the first setting data of the day,
Even when the power switch 6 of the apparatus is turned on again, the original state of the heater 11 before the power is turned off is restored.

As a result, unlike the related art in which the heater 11 is turned off in spite of the fact that the heater 11 should be turned on, the power switch is turned off whenever the power of the apparatus is turned off. When 6 is turned on,
It is possible to return to the control state of the heater 11 as instructed by the setting data, and to solve the problem that the operation rate of the apparatus is reduced and molding defects are generated.

The present invention is not limited to the above-described embodiment. For example, the operation of the apparatus may not be performed by a weekly timer but may be performed according to an operation schedule in which set data is specified with a limited date. The present invention is not limited to a resin molding device for performing resin sealing of a semiconductor component, and can be applied to any resin molding device in general.

[0036]

As is apparent from the above description, according to the method of controlling heating of a molding die of a resin molding apparatus of the present invention, the heating of a molding die is controlled according to an operation schedule based on set data. Therefore, when the power switch of the resin molding apparatus is turned on and the time is before the time indicated in the first setting data of the day, the heater is turned on in accordance with the last setting data which is retroactive from the day. State or off state, so that when the power of the device is turned off,
This provides an excellent effect that the heater can be returned to the control state as instructed by the setting data.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating a procedure of heater control according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a control device.

FIG. 3 is a diagram illustrating an example of a weekly timer.

FIG. 4 is a diagram showing another example of a weekly timer.

FIG. 5 is a diagram showing still another example of the weekly timer.

FIG. 6 is a diagram corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

In the drawings, 1 is a control device, 2 is a man-machine interface unit, 3 is a display, 4 is a keyboard, 5 is a control unit, 6 is a power switch, 7 is a sensor, and 11 is a heater.

Claims (2)

(57) [Claims] 1. An on-state in which a mold is heated by heater control or an off-state in which the heater is turned off is stored with setting data pre-specified together with a switching time thereof, and is formed according to an operation schedule based on the setting data. In the molding die heating control method of the resin molding device, which performs the heating control of the mold, when the power switch of the resin molding device is turned on, the time is before the time indicated in the first setting data of the day. A method for controlling heating of a molding die of a resin molding apparatus, wherein the heater is turned on or off in accordance with the most recent setting data that goes back in the past from the day. 2. The method according to claim 1, wherein the setting data is set for each day of the week, and the same operation schedule is repeated every week.