JP3513049B2 - Soldering equipment with alarm - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soldering device with an alarm device capable of preventing soldering at a temperature outside the soldering conditions.

[0002]

2. Description of the Related Art A soldering iron used for soldering electronic parts such as ICs and LSIs is a contact type soldering iron in which a built-in electric heater heats the soldering iron to melt the solder. There is also a non-contact type in which a gas such as air or nitrogen is heated by the heater and jetted from a nozzle and the solder is melted by the heat of the high temperature gas and soldered.

The temperature of the iron tip and the gas temperature (hereinafter referred to as "iron temperature") when soldering using such a solder iron are different depending on the soldering conditions such as the type of solder and the type of work. , Generally 300-80
A temperature of about 0 ° C. is preferable, and particularly when a solder containing no lead is used, a high iron temperature is required. If soldering is performed at a temperature that does not conform to the soldering conditions, the rate of defective products due to poor soldering will increase and the production efficiency will decrease, even if the temperature is too low or too high. .

On the other hand, when performing a soldering work, the trowel temperature is raised to a preset temperature by energizing the heater, and the work is disclosed. However, even if the heater is fully operated, the trowel temperature is a predetermined value. Since it takes a certain amount of time to stand up to the height, soldering may be performed without noticing it while the iron temperature is still low. At this time, soldering failure is likely to occur.

In addition, during soldering work, operations such as temporarily suspending work for various reasons and restarting after a while are often repeated, and in such a case, safety, power saving, etc. For this reason, it is desirable to control the trowel temperature by turning off the heater by limiting the amount of electricity to the heater during interruption, but the trowel temperature rises to a predetermined height when the work is resumed. Since it takes some time, it is conceivable that soldering failure may occur by performing soldering while the iron temperature is still low immediately after the restart.

Further, it is conceivable that the soldering work is performed without noticing that the trowel temperature is out of the set temperature due to the disconnection of the sensor or the failure of the heater.

[0007]

SUMMARY OF THE INVENTION The main technical problem of the present invention is to provide a soldering apparatus with an alarm device capable of preventing soldering at a temperature outside the soldering conditions. To provide.

[0008]

In order to solve the above problems, according to the present invention, a soldering iron having an electric heating heater for soldering, and a temperature sensor for detecting the ironing temperature of the soldering iron are provided. A vibration sensor attached to the soldering iron to detect vibration when the soldering iron is used, a first alarm generator for issuing an alarm signal, and the soldering iron temperature above the soldering condition. A soldering device with an alarm device, comprising: a controller including an alarm circuit that operates the first alarm generator in response to a detection signal from the vibration sensor when the vibration sensor detects vibration of the soldering iron. Will be provided.

In the soldering apparatus having the above structure, the temperature of the soldering iron is constantly detected by the temperature sensor and input to the alarm circuit. When the soldering iron is moved for use, its vibration is detected by the vibration sensor and the detection signal is input to the alarm circuit. Then, when the soldering work is attempted in a state where the iron temperature is out of the soldering condition, the alarm circuit operates and the first alarm generator operates, and the alarm signal is issued to the worker. This alarm signal allows the worker to know that the temperature of the soldering iron is out of the soldering condition, so that the soldering failure can be eliminated by interrupting the work.

According to a preferred embodiment of the present invention, the controller has a heater control circuit and a vibration detection circuit. Of these, the heater control circuit has a high temperature mode that keeps the iron temperature at a temperature suitable for the soldering conditions, and a low temperature mode that keeps the iron temperature at a temperature lower than the soldering conditions.
It is possible to switch to the power-off mode in which the heater is turned off, and one of the vibration detection circuits is set to the above while the vibration non-detection time in which the vibration sensor does not continuously detect the vibration of the soldering iron does not exceed the first set time. The heater control circuit is maintained in the high temperature mode, the heater control circuit is switched to the low temperature mode when the vibration non-detection time exceeds the first set time, and the heater control circuit is switched when the second set time is exceeded. Operates to switch to power-off mode.

As a result, if the soldering iron is left for a long time due to the interruption of the soldering work, the safety device operates and the heater automatically switches from the high temperature mode to the low temperature mode and the power off mode in sequence, so that the safety is improved. High and useless power consumption is also reliably prevented. Moreover, when the soldering work is interrupted for a short time, the heater is returned from the low temperature mode, so that the temperature rises quickly and the soldering can be resumed efficiently in a short time.

According to a preferred specific embodiment of the present invention, the heater control circuit has a mode release switch, and when the heater control circuit is in the low temperature mode, the release switch is pressed or vibrated. When the sensor detects the vibration of the soldering iron, the low temperature mode is released,
When in the power-off mode, the power-off mode is released only by pressing the release switch.

Also in the present invention, the heater control circuit includes a second alarm generator that emits a signal different from the first alarm generator, and the second alarm is generated when the heater is switched to the low temperature mode. It is desirable that the alarm signal be emitted from the generator.

According to another embodiment of the present invention,
The vibration sensor is composed of a pair of contacts that communicate with the vibration detection circuit, and a vibration member that is movably disposed between these contacts and that opens and closes both contacts by the vibration when the soldering iron is used. To be done.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the overall structure of a soldering apparatus with an alarm device according to the present invention, in which reference numeral 1 denotes a contact type soldering iron, which is an electric heating type built in a iron point member 1a. The trowel member 1a is heated by the heater 2 and the trowel 1b is heated.
The solder is melted and soldered. Further, 3 is a temperature sensor attached to the iron tip 1b to detect the temperature (iron temperature) of the iron tip 1b, and 4 is attached to the solder iron 1 to detect vibration when the solder iron 1 is used. A vibration sensor is shown, and the heater 2, the temperature sensor 3, and the vibration sensor 4 are connected to a controller 6 for controlling the temperature of the soldering iron 1.

The heater 2 is connected to the controller 6 through the temperature fuse 5 attached to the iron tip member 1a, and even when the heater 2 remains in the on state due to a failure of the controller 6 or the like, The temperature fuse 5 is melted and the heater circuit is opened.

The controller 6 switches the control mode of the heater control circuit which receives the vibration detection signal from the vibration sensor 4 and the heater control circuit which keeps the iron temperature at the set temperature by controlling the power supply to the heater 2. It includes a vibration detection circuit and an alarm circuit that issues an alarm signal to the operator through the first alarm generator when soldering is attempted while the iron temperature of the soldering iron 1 is out of the soldering conditions. I'm out.

In the heater control circuit, the control mode for controlling the heater has a high first set temperature (for example, 300 to 800 ° C.) in which the iron temperature is adapted to the soldering conditions.
The temperature can be switched in three stages: a high-temperature mode for keeping the temperature at a low temperature, a low-temperature mode for keeping a second set temperature lower than that (for example, 150 to 250 ° C.), and a power-off mode for turning off the heater. The temperature is set in the heater control circuit by a temperature setter, and the set temperature and the iron temperature actually detected by the temperature sensor 3 are compared in the heater control circuit so that their deviations become zero. The trowel temperature is kept at the set temperature by controlling the on / off state of the heater 2 and adjusting the heat generation temperature.

On the other hand, in the vibration detection circuit, the reference time for switching the control mode of the heater control circuit can be set in two steps, long and short, by the time setting device, and the time during which the soldering work is interrupted. That is, while the vibration sensor 4 does not continuously detect the vibration of the soldering iron 1 while the vibration non-detection time does not exceed the first set time with a short interval, the heater control circuit is maintained in the high temperature mode to detect the vibration non-detection. When the time exceeds the first set time, the heater control circuit is switched to the low temperature mode, and when the vibration non-detection time exceeds the second set time with a long interval, the heater control circuit is switched to the power off mode. is there.

The heater control circuit is in the low temperature mode and / or
Alternatively, when switching to the power-off mode, it is desirable to issue an alarm signal from the second alarm device.

The heater control circuit is provided with a mode release switch. When the soldering work is restarted, the mode release switch is pushed to cancel the low temperature mode or the power off mode, and the heater control circuit is set to the high temperature mode. It can be switched.

When the heater control circuit is in the low temperature mode, the low temperature mode is released by the vibration sensor 4 detecting the vibration of the soldering iron 1 without pressing the mode release switch, and the power is turned off. When in the mode, it is desirable that the power-off mode is not canceled even if the vibration sensor 4 detects the vibration of the soldering iron 1.

As shown in FIG. 2, the vibration sensor 4 is a substrate composed of a pair of contacts 10 and 10 communicating with a vibration detection circuit and an electrically insulating member for supporting the contacts 10 and 10 in a spaced state. 11 and a vibrating member 12 that is freely movably disposed between the contacts 10 and 10 in a state where both ends of the conductive contact 13 are loosely fitted in the holes 10a of the contacts 10 and 10. Then, the vibrating member 12 is provided with a weight 12a for deviating the center of gravity and destabilizing the movement. When the soldering work is performed, the vibrating member 12 is moved by the movement of the soldering iron 1,
The vibration sensor 4 is repeatedly turned on and off by floating between 10 and contacting / separating the contact 13 with the contacts 10 and 10.

Further, the temperature sensor 3 and the vibration sensor 4 are connected to the alarm circuit, the temperature setting device and the first alarm generator are connected, and the trowel temperature is set to the first setting by the temperature setting device. In the state where the vibration sensor 4 is out of the temperature, that is, the soldering condition is out of the range,
When the vibration of the soldering iron 1 is detected, that is, when soldering is about to be performed, the alarm circuit causes the first
The alarm generator is activated to send an alarm signal to the worker.

The alarm signal of the first alarm generator and the alarm signal of the second alarm generator may be voice, light or other, but they are different signals so that they can be distinguished. Is desirable.

In the soldering apparatus having the above structure, the heater 2 is energized to raise the iron temperature to the first set temperature by the temperature setting device, and the operation will be disclosed. Soldering is performed while the iron temperature is still low. When the trowel 1 is moved to perform a work, the alarm circuit is activated by the vibration detection signal from the vibration sensor 4, and the first alarm device issues an alarm. As a result, the worker can know that the iron temperature is low, so that the soldering failure can be avoided by performing the work after a while.

After the iron temperature has reached the first set temperature suitable for the soldering condition, the alarm circuit does not operate even if the vibration sensor 4 detects the vibration of the solder iron 1 during the work, and therefore the alarm signal is I can't speak. On the other hand, the vibration sensor 4
Since the vibration of the soldering iron 1 is constantly detected by repeatedly turning on and off, the heater control circuit is kept in the high temperature mode, and the iron temperature is kept at the high first set temperature suitable for the soldering conditions. Is dripping

If the soldering iron 1 is left as it is while being supported by a stand or the like due to the interruption of the soldering work, the vibration sensor 4 does not switch while maintaining either the on or off state, and therefore the vibration is not generated. The undetected state will continue. When the vibration non-detection time exceeds the first set time, the heater control circuit is switched to the low temperature mode by the vibration detection circuit, and the iron temperature is lowered to the second set temperature which is the low temperature. At this time, an alarm is issued from the second alarm device at the same time or immediately before.

When the soldering work is resumed from the low temperature mode, the vibration sensor 4 is turned on and off to detect the vibration of the soldering iron, and the heater control circuit is returned to the high temperature mode. Alternatively, the heater control circuit can be returned to the high temperature mode by pressing the mode release switch. In this case, since the work can be restarted from the state where the iron 1b is kept at a low temperature, the temperature rises faster than when restarting from the state where the heater is turned off, and the soldering is restarted in a short time. The work efficiency is good.

Further, when the work is temporarily interrupted and restarted as described above, when the trowel temperature is short, the trowel temperature does not switch to the low temperature mode but remains in the high temperature mode. The alarm circuit does not operate even when the movement of the iron 1 is detected, but when the operation is restarted after switching to the low temperature mode, the alarm circuit operates immediately because the iron temperature immediately after that is lower than the soldering compatible temperature. Then
An alarm is issued from the first alarm device. This allows the worker to know that the trowel temperature is low due to switching to the low temperature mode, and after a while, when the trowel temperature has become sufficiently high, the work can be resumed and soldering can be performed. It is possible to avoid defects.

On the other hand, when the soldering iron 1 is still left after the heater control circuit is switched to the low temperature mode and the vibration non-detection time by the vibration sensor 4 exceeds the second set time, the vibration is generated. The detection circuit switches the heater control circuit to the power off mode and the heater is turned off. When the power-off mode is set in this way, the power-off mode is not released even when the vibration sensor 4 detects the vibration of the soldering iron 1, but is released only by pressing the mode release switch. In addition, since the state of this power-off mode is the same as the state before the start of work in which the heater 2 is not energized, even if the vibration sensor 4 detects the vibration of the soldering iron 1, the alarm is issued from the first alarm device. It is not necessary to be set, but an alarm may be set.

After the heater control circuit is in the power-off mode in this way, it is preferable that another alarm sound for notifying the operator of the heater control circuit is issued in a constant cycle (1 to 10 minutes).

Further, a low-temperature mode switch is provided in the heater control circuit, and when the soldering work is interrupted, the low-temperature mode switch is pushed to immediately start the soldering iron 1
Can also be configured to switch to a low temperature mode.

Further, the setting temperature, setting switching time and the like in the controller 6 can be configured so that the setting can be changed only after inputting a predetermined specific password.

As described above, in the soldering apparatus, when the soldering iron 1 is left for a long time due to the interruption of the soldering work, the safety device is activated and the heater 2 is automatically changed from the high temperature mode to the low temperature mode and the power off mode. Since the switching is performed sequentially, the safety is high and wasteful power consumption is surely prevented. Moreover, when the soldering work is interrupted for a short time, the heater 2 is returned from the low temperature mode, so that the temperature rises quickly and the soldering can be resumed efficiently in a short time.

Further, since an alarm signal is issued when an attempt is made to perform work while the trowel temperature is out of the soldering conditions, immediately after the soldering work is started or the soldering work is temporarily stopped. In case of restarting after a temporary interruption, or when the heater or sensor is broken or broken, soldering is performed without knowing that the iron temperature is out of the soldering conditions. This can be prevented and solder defects can be reliably prevented.

In the soldering apparatus of the above embodiment, the heater 2 is turned off when the time when the soldering iron 1 is not used exceeds the second set time, but the controller 6 is kept in the energized state. It stays dripping and consumes a little electricity. Therefore, in order to completely eliminate power consumption and improve economy and safety, it is desirable that the power supply circuit of the controller 6 is also turned off when the heater 2 enters the power off mode. 3 and 4 show a soldering device having such a mechanism.

In the soldering apparatus of the second embodiment shown in FIG. 3, a non-locking type power source which keeps the ON state only while being pressed against the primary side of the power source circuit 7 for connecting the controller 6 to the power source. Switch 8 and self-holding relay 9
Of the controller 6 is connected in parallel with the contact 9a of
At the same time when the controller 6 is energized, it is turned on,
The relay 9 is connected which is turned off at the same time when the heater 2 is turned off or when a certain time has elapsed after the heater 2 was turned off by the action of a timer. The other structure is substantially the same as that of the first embodiment.

In the soldering apparatus of the second embodiment, when the power switch 8 is pushed, the relay 9 is turned on and the contact 9a is closed, so that the power circuit 7 is self-maintained in the on state and the power switch is released. However, the controller 6 is kept in the energized state.

Then, when the time when the soldering iron 1 is not used exceeds the second set time and the heater 2 enters the power-off mode, or after a certain time has elapsed,
Since the relay 9 is turned off and the contact 9a is opened,
The power supply circuit 7 is turned off, and the power supply to the controller 6 is released. As a result, the power consumption is reduced to zero and the economy is improved, and at the same time, the risk of being left in the energized state is reduced to zero and the safety is improved.

After the power supply circuit 7 is turned off, the controller 6 cannot be energized unless the operator presses the power supply switch. Therefore, for example, even if the power is cut off due to a power failure or a breaker during work and then they are restored, there is no possibility that the controller 6 is energized and the heater 2 is turned on. Can beat

On the other hand, in the third embodiment shown in FIG.
A power switch 15 with a reset mechanism is connected to the power circuit 7. The power switch 15 is a lock type switch that can maintain an ON state, and the lock is released by the electromagnetic force of the reset coil 16. Then, the reset coil 16
Is connected to the controller 6, and when the heater is switched to the power-off mode, the reset coil 16 is energized, the power switch 15 is unlocked, and it is switched off. This power switch 15
Needless to say, can be turned off by manual operation.

Although the above-mentioned embodiment describes the case where the soldering iron is a contact type soldering iron, the soldering iron 1 heats a gas such as air or nitrogen with a heater and jets it from a nozzle. A non-contact type in which the solder is melted by the heat of the high temperature gas and soldered may be used.

[0044]

As described above, according to the present invention, the alarm device in which the vibration sensor and the temperature sensor are combined prevents the soldering from being performed at a temperature outside the soldering conditions and prevents defective solder. Can be prevented.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a soldering device of the present invention.

FIG. 2 is a cross-sectional view showing a configuration example of a vibration sensor.

FIG. 3 is a configuration diagram schematically showing a second embodiment of the soldering device of the present invention.

FIG. 4 is a schematic diagram showing a third embodiment of the soldering device of the present invention.

[Explanation of symbols]

1 Soldering iron 2 heater 3 temperature sensor 4 Vibration sensor 6 controller 10 contacts 12 Vibration member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-112670 (JP, A) JP-A-57-19153 (JP, A) JP-A-9-201671 (JP, A) JP-A-9- 33333 (JP, A) JP-A-11-192547 (JP, A) Actual development Sho 60-52068 (JP, U) Registered utility model 3054289 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B23K 3/03

Claims (5)

(57) [Claims] 1. A soldering iron provided with an electric heating heater for soldering, a temperature sensor for detecting the temperature of the ironing iron of the soldering iron, and a soldering iron attached to the soldering iron when the soldering iron is used. A vibration sensor that detects the vibration of the soldering iron, a first alarm generator that issues an alarm signal, and the vibration sensor when the vibration sensor detects the vibration of the soldering iron when the temperature of the iron is out of the soldering condition. A controller including an alarm circuit for operating the first alarm generator in response to a detection signal from the alarm device, and a soldering device with an alarm device. 2. The soldering apparatus according to claim 1, wherein the controller has a high temperature mode in which the iron temperature is kept at a temperature suitable for the soldering conditions and a low temperature mode in which the iron temperature is kept at a temperature lower than the soldering conditions. A heater control circuit capable of switching between a power-off mode for turning off the heater and a power-off mode, and a heater control circuit as long as the vibration non-detection time in which the vibration sensor does not continuously detect the vibration of the soldering iron does not exceed the first set time. In the high temperature mode, the heater control circuit is switched to the low temperature mode when the vibration non-detection time exceeds the first set time, and the heater control circuit is switched to the power off mode when the second set time is exceeded. A soldering device having a vibration detection circuit. 3. The soldering apparatus according to claim 2, wherein the heater control circuit has a mode release switch, and when the heater control circuit is in a low temperature mode, the release switch is pressed or vibrated. When the sensor detects the vibration of the soldering iron, the low temperature mode is released,
The soldering apparatus is characterized in that when in the power-off mode, the power-off mode is released only by pressing the release switch. 4. The soldering apparatus according to claim 1, wherein the heater control circuit has a second alarm generator that emits a signal different from the first alarm generator. A soldering device , wherein an alarm signal is emitted from the second alarm generator when the heater is switched to the low temperature mode. 5. The soldering device according to claim 1, wherein the vibration sensor is provided with a pair of contacts communicating with a vibration detection circuit, and movably arranged between the contacts. A soldering device comprising: a vibrating member that is moved by vibration when a soldering iron is used to open and close both contacts.