JPH09201670A - Soldering iron - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a soldered quality in a production line by providing a holding means for holding a temp. setting value in a soldering iron device so as not to freely change the temp. setting value. SOLUTION: A value newly inputted from a value inputting switch 19 and a preinputted value stored in an EEPROM 24 are compared and collated in each position. It is judged whether the newly inputted value is the normal pass- word or not, and in the case of judging as 'YES', a key-lock setting is released. In the case of judging as 'NO', it is judged whether an operation for demanding the change of the temp. setting value prestored in the EEPROM 24 is executed or not. In the case of judging as 'NO', it is judged whether an operation for demanding the key-lock setting is executed or not. By this method, since the holding of the temp. setting value and the release of the holding are executed by collating the pass-word, the temp. setting value is completely controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soldering iron device, and more particularly to a soldering iron device suitable for use in a soldering operation in a manufacturing line.

[0002]

2. Description of the Related Art As a soldering iron device, there is a soldering iron device in which the temperature setting of the tip can be changed. With this type of soldering iron device, the temperature of the tip can be set arbitrarily, so when this is used in a manufacturing line for soldering, workers working in the manufacturing line will find it convenient for each individual worker. Therefore, the temperature of the soldering work could not be sufficiently controlled because of the freedom to set the tip temperature according to the above. For this reason, there is a problem that it is difficult to realize a soldering work of uniform quality because of variations in soldering quality.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a soldering iron device in which the temperature set value cannot be arbitrarily changed.

[0004]

To achieve the above object, as a first means, the tip is based on a comparison between a temperature setting value of the tip and a temperature detection value of the tip. In the soldering iron device in which the heating means is controlled so that the temperature of the temperature becomes a temperature set value, a means of including a holding means for holding the temperature set value is adopted.

As a second means, in the above-mentioned first means, a means for holding the temperature set value and releasing the holding by collating the inputted password with a previously stored password is adopted. To be done.

As a third means, in the above second means, a means for providing a writable and erasable memory for storing a password is adopted.

As a fourth means, the means of any one of the first to third means is provided with a display means for showing the holding state of the temperature set value.

As a fifth means, the heating means is controlled so that the temperature of the tip becomes the temperature set value based on the comparison between the temperature set value of the tip and the detected temperature value of the tip. In the soldering iron device, the heating means is controlled so that the temperature of the iron tip becomes a temperature set value. In the soldering iron device, the heating means is controlled and the password inputted from the operating means is stored in the memory. A means is provided which includes a temperature control means for holding and releasing the set temperature value when it is detected that the password matches the password stored in advance.

[0009]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of a soldering iron device according to the present invention will be described below with reference to FIGS.

FIG. 1 is a circuit diagram showing the configuration of this embodiment. In this figure, reference numeral 1 is a one-chip microcomputer (holding means / temperature control means), which operates according to a control program stored in an internal ROM (read-only memory) to operate the respective components described below. Control. As the one-chip microcomputer 1, a general-purpose product having various input / output interfaces is applied.

The soldering iron device is composed of a soldering iron part and an operation box, and reference numeral 2 indicates a tip (heated part) provided on the soldering iron part.
A heater (heating means) 3 for heating the heater and a temperature sensor 4 for detecting its heating temperature as an electric signal are provided. Reference numeral 5 is a power supply transformer for lowering the commercial power supply. The heater 3 connected in series with the thyristor 6 whose ON / OFF is controlled by the one-chip microcomputer 1 is connected to both ends of the secondary winding of the power supply transformer 5. , For example, an AC voltage of 24 Vrms is applied. Further, one end of the secondary winding is input to the zero-cross detector 7, and the zero-cross detector 7 detects the zero-cross position of the AC voltage input from the power transformer 5 and outputs it to the one-chip microcomputer 1. The thyristor 6 is controlled based on the output of the zero cross detector 7.

Both ends of the secondary winding of the power transformer 5 are further connected to a power circuit 8, which is connected to the power transformer 5.
The AC voltage input from is rectified and a DC power supply voltage of, for example, ± 5 V and +3 V is output. The temperature sensor 4
Is connected to an amplifier 9, which amplifies the electric signal output from the temperature sensor 4 and multiplexes it by a multiplexer 10
Output to one of the selection terminals.

On the other hand, the output of the thermistor 12 is amplified by the amplifier 11 and input to the other select terminal of the multiplexer 10, and the multiplexer 10 receives the temperature sensor based on the output of the one-chip microcomputer 1. The output of 4 or the output of the thermistor 12 is selectively output to the A / D converter (analog / digital converter) 13. The A / D converter 13 converts an input signal that is an analog signal into a digital signal and outputs the digital signal to the one-chip microcomputer 1.

Reference numeral 14 is a switch for controlling the volume of the buzzer 15 by switching the power supply voltage supplied to the buzzer 15 to either + 5V or + 3V based on the output of the one-chip microcomputer 1. The buzzer 15 is controlled in sound generation based on a signal input from the one-chip microcomputer 1 via the buffer amplifier 16.

Reference numeral 17 denotes an operation panel provided with the operation box, which is composed of a plurality of display devices (display means) 18 and operation switches (operation means) 19. Each operation terminal of the display 18 is connected to the one-chip microcomputer 1 via the buffer 20, and the common terminal is connected to the collector terminal of the transistor 21. Further, each base terminal of the transistor 21 is connected to the one-chip microcomputer 1, and a power supply voltage of, for example, +5 V is supplied to the common terminal of each display 18 based on the output of the one-chip microcomputer 1. The operation switch 19 is inserted between the collector terminals and the one-chip microcomputer 1 so that the operation is input to the one-chip microcomputer 1.

FIG. 2 is a plan view showing the structure of the operation panel 17. In this figure, reference numeral 19a is a numerical value input switch for inputting a temperature set value of the tip 2 and a personal identification number (password) for holding the temperature set value (key lock setting) or releasing the key lock setting. The numerical value input from the numerical value input switch 19a is displayed on the set numerical value display 18a. 19b is a set numerical display 18
A display digit movement switch for operating the digit movement of the numerical value displayed in a, 19c is a parameter change switch for changing the input mode of the numerical value input from the numerical input switch 19a, and 19d is a key lock switch for changing the above-mentioned key lock setting and release. Is. The key lock switch 1
When 9d is operated and the soldering iron device is set to the key lock setting state, the key lock setting lamp 18b is turned on.

Reference numeral 18c is a measured temperature indicator for displaying the measured temperature of the tip 2 detected by the temperature sensor 4, 18d is a heater energizing lamp which is turned on when the heater 3 is energized, and 18e is the temperature set value. In contrast, the alarm lamp blinks when the measured temperature deviates from the range set by the numerical input switch 19a or is within the range, and 18f indicates that the operation mode of the soldering iron device is set to the auto tuning mode. An automatic tuning lamp that lights up when the soldering iron device is present and a sleep lamp that lights up when the operation mode of the soldering iron device is set to the sleep mode. In addition, the soldering iron device is configured to automatically enter a low power state (sleep operation state) when not used for a certain period of time, and a reference numeral 18h indicates a sleep operation that lights up when the sleep operation state is entered. It is a lamp.

Further, in FIG. 1, reference numeral 22 is an oscillator circuit, which generates a basic clock for the one-chip microcomputer 1. Reference numeral 23 is a reset switch for initializing the one-chip microcomputer 1.

Reference numeral 24 is an EEPROM (electrically writable and erasable memory), which is the numerical value input switch 19a.
The temperature setting value input from and the above-mentioned personal identification number for setting and releasing the key lock are stored. Also, the EEP
The ROM 24 is also configured to store the setting state of the soldering iron device such as the setting state of the key lock by the key lock switch 19d.

Next, the operation of setting and releasing the key lock in the one-chip microcomputer 1 will be described with reference to the flow charts shown in FIGS.

When the power is turned on, the one-chip microcomputer 1 judges whether or not the key lock is set in the key lock state, that is, the key lock is set at the previous use, based on the data stored in the EEPROM 24 (step S1). .

Here, the one-chip microcomputer 1 compares the temperature setting value stored in the EEPROM 24 with the temperature of the tip 2 detected by the temperature sensor 4 in the key lock setting state, and The energization control of the heater 3 is performed so that the temperature follows the temperature set value within a certain allowable range. Further, in the key lock setting state, the one-chip microcomputer 1 does not accept this operation even if the numerical value input switch 19a is operated to change the temperature setting value, and the luck of the tip 2 is stored in the EEPROM 24 in advance. It is controlled based on the temperature set value.

Now, the judgment in step S1 is "YE
In the case of "S", it is determined whether or not the operation for requesting the key lock release is performed from the numerical value input switch 19a (step S2), the determination is "YES", and the password is input from the numerical value input switch 19a. Then (step S3), it is determined whether or not an operation requesting verification of the password has been performed (step S4). If the determination is "NO", the operation waits for the password input operation and waits. If "YES", the password is determined (step S5).

Here, the password is, for example, a three-digit numerical value, and in the password determination process, the numerical value newly input from the numerical value input switch 19a and the numerical value previously input by the numerical value input switch 19a and stored in the EEPROM 24. And are compared for each digit and collated. Then, it is judged whether or not the newly input numerical value is a proper password (step S6), and if "YES", the key lock setting is released (step S7). In this case, an operator who handles the soldering iron device can change the temperature of the tip 2 by newly inputting a temperature set value from the numerical value input switch 19a.

If the key lock setting is released in step S7 or the judgment in step S1 is "NO", it is judged whether or not an operation for requesting a change in the temperature set value stored in the EEPROM 24 in advance is performed ( If "NO" is determined in the step S8), it is determined in a step S9 whether or not the operation for requesting the key lock setting is performed.

On the other hand, if "YES" is determined in step S8, a new temperature set value is input (step S10), and it is determined whether or not an operation requesting registration of the temperature set value is performed ( Step S11), and if this determination is "YES", proceed to the processing of Step S9,
If "NO", the process of step S8 is repeated.

When the operation for requesting the key lock setting is not performed in step S9, it is determined whether or not the password change request is operated (step S12). If the determination is "YES", steps S13 to step S
A series of processing up to 16, that is, the same processing as the processing from step S3 to step S6 is performed. If "NO", the processing at step S8 is repeated.

If it is determined in step S16 that the password verification result is not correct, step S8
The above process is repeated, and when the collation result is judged to be correct and a new password is input (step S1)
7) It is determined whether or not the operation of requesting registration of the new password is performed (step S18), and this determination is "N".
In the case of "O", the process of step S8 is repeated, and "YE
If "S", the password is updated in step S19. As a result, the new password input in step S17 is stored and retained in the EEPROM 24, and the process of step S8 is subsequently performed.

If it is determined in step S9 that a key lock setting operation has been performed, a series of processing from step S20 to step S23, that is, processing similar to that from step S3 to step S6 is performed. If it is determined in step S23 that the proper password has been input, the process of step S24 brings the soldering iron device into the key lock setting (locking) state. In this case, the soldering iron device is set in a state of not accepting the set temperature input from the numerical value input switch 19a, and the one-chip microcomputer 1 starts the step S described above.
A series of processes from 2 is repeated. On the other hand, if it is determined in step S23 that the correct password has not been input, the process of step S12 is repeated.

Further, if it is determined in step S2 that the key lock release request operation has not been performed, or if it is determined in step S6 that the password verification result is incorrect, was the password change request operated? It is determined whether or not (step S2
Five). Here, if this determination is "NO", step S2
Processing is repeated, and if “YES”, step S
A series of processing from 26 to step S29, that is, processing similar to the processing from the input of the password to the determination in the above steps S13 to S16 is performed.

If it is determined in step S29 that the password verification result is incorrect, step S29 is performed.
When the process of step 2 is repeated and a new password is input after it is determined that the password verification result is correct (step S30), it is determined whether or not a new password registration request operation has been performed (step S31). . If the determination is "NO", the process waits until a new password is input in step S30, and if the determination is "YES", the password is updated in step S32, and the new password is stored and retained in the EEPROM 24. It Then, the one-chip microcomputer 1 shifts the processing to step S2 and repeats the above processing until the power is cut off.

[0032]

As described above, the soldering iron device according to the present invention has the following effects. (1) Since the holding means for holding the temperature set value is provided,
In order to change the temperature set value, it is necessary to release the holding state, so the temperature set value cannot be changed arbitrarily. Therefore, when the soldering iron device is used in a manufacturing line or the like for performing a soldering work, the following effects of improving the soldering quality in the manufacturing line are achieved. (2) Since the temperature set value is held and released by checking the password, the temperature set value is thoroughly managed. (3) Since the password is stored in the writable and erasable memory, the password can be changed as needed. (4) Since the display means for showing the holding state of the temperature set value is provided, the holding state can be easily confirmed. (5) Since the temperature control means controls the heating means and holds and releases the temperature set value, the structure is simple.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a soldering iron device according to the present invention.

FIG. 2 is a plan view showing a configuration example of an operation panel in the soldering iron device according to the present invention.

FIG. 3 is a flowchart showing the operation of the soldering iron device according to the present invention.

FIG. 4 is a flowchart showing the operation of the soldering iron device according to the present invention.

[Explanation of symbols]

 1 One-chip microcomputer 2 Tip 3 Heater 4 Temperature sensor 5 Power transformer 6 Thyristor 7 Zero cross detector 8 Power supply circuit 9, 11 Amplifier 10 Multiplexer 12 Thermistor 13 A / D converter 14 Switch 15 Buzzer 16 Buffer amplifier 17 Operation panel 18 Display Device 19 Operation switch 20 Buffer 21 Transistor 22 Oscillation circuit 23 Reset switch 24 EEPROM

Claims (5)

[Claims] 1. A soldering machine in which heating means is controlled so that the temperature of the tip becomes the temperature set value based on a comparison between a temperature set value of the tip and a detected temperature value of the tip. A soldering iron device, comprising: holding means for holding the temperature set value. 2. The soldering iron device according to claim 1, wherein the holding means holds and releases the temperature set value by comparing the input password with a previously stored password. 3. The soldering iron device according to claim 2, wherein the password is stored in advance in a writable and erasable memory. 4. The soldering iron device according to claim 1, further comprising display means for indicating a holding state of the temperature set value. 5. A soldering machine in which the heating means is controlled so that the temperature of the tip becomes the temperature set value based on the comparison between the temperature set value of the tip and the detected temperature value of the tip. In the apparatus, the temperature control means for controlling the heating means and holding and releasing the temperature set value when detecting that the password input from the operating means matches the password stored in advance in the memory are provided. A soldering iron device characterized by being provided.