JPH07559U - Dryer - Google Patents

Abstract

(57) [Summary] [Purpose] The temperature of the drying site can be set with high precision, and the drying operation is automated. A heating lamp 9 for radiating heat rays, a temperature sensor 10 for indirectly monitoring the temperature of a dry portion, and the sensor 1
The controller 12 controls the heat radiation temperature of the heating lamp 9 by a signal of 0. The temperature sensor 10 is arranged in the vicinity of the heating lamp 9, and the heat radiation temperature of the lamp 9 is detected by the temperature sensor 10. A controller 12 is provided which can set the heat radiation temperature of the heating lamp 9 based on the information on the distance L between the drying device 3 and the drying portion and the set temperature of the drying portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drying device capable of highly accurately setting the temperature of a drying site and automating the drying operation.

[0002]

[Prior art]

 For example, in an automobile repair shop, a stand-type one in which a reflector is assembled to a heating lamp such as an infrared lamp or a far-infrared lamp is used as a simple drying device for a repaired part of a car after applying or painting a sheet metal putty. . In such drying, the temperature control of the dry part is important to maintain the quality of the dry, but the conventional one does not have a temperature adjusting means for the dry part, and the temperature adjustment is actually done exclusively. This was done by adjusting the distance between the dry part and the heating lamp according to the intuition of the operator.

In this case, however, the quality of drying varies depending on the operator, and not only stable quality cannot be obtained, but also an immature operator causes re-repair and the like, resulting in low productivity. There was a problem such as that, and it was desired to improve it.

Therefore, in order to solve this problem, for example, the one disclosed in Japanese Patent Laid-Open No. 2-131168 discloses a temperature sensor for detecting the temperature of a dry part, a temperature detected by the sensor and a set temperature of the dry part. The temperature of the heating lamp is controlled through the controller, which outputs a control signal corresponding to the difference and controls the temperature of the heating portion to maintain the temperature at the set temperature.

However, since this conventional device cannot be directly attached to the dry part, the temperature signal is obtained only by the temperature sensor attached to the inner surface or the inner side of the dry part. In addition to not being able to obtain accurate temperature information on the device, it is difficult to obtain good drying quality, and because a wire-type temperature sensor is used, its power cord interferes with work, and it also heats itself. Is required, and there is a problem that the device becomes expensive.

In this case, a non-contact type radiation thermometer may be used in place of the temperature sensor as the temperature detecting means of the dry portion. However, the radiation thermometer may have an error in the detected temperature depending on the shape and color of the dry portion. Easily occurs, and it is difficult to achieve uniform coating.

[0007]

[Problems to be solved by the device]

 It is an object of the present invention to solve the above problems and to provide a drying device capable of setting the temperature of a drying portion with high accuracy and automating the drying operation.

[0008]

[Means for Solving the Problems]

 For this reason, the drying apparatus of the present invention comprises a heating lamp that radiates heat rays, a temperature sensor that indirectly monitors the temperature of the drying portion, and a controller that controls the heat radiation temperature of the heating lamp by the signal of the sensor. In the drying device, a temperature sensor is arranged in the vicinity of the heating lamp to detect the heat radiation temperature of the lamp by the temperature sensor, and the distance between the drying device and the drying part and the set temperature of the drying part are set. Based on this information, a controller that can set the heat radiation temperature of the heating lamp is provided, and the temperature of the drying part can be set with high accuracy, and the drying operation can be automated.

[0009]

[Action]

 The temperature sensor is placed in the vicinity of the heating lamp to keep the drying area and the drying device tidy and to perform the drying operation safely and smoothly. The temperature of the heating lamp that forms the temperature of the dry part is precisely monitored by detecting the heat radiation temperature of the lamp and the temperature of the dry part can be set with high accuracy. A controller that can set the heat radiation temperature of the heating lamp based on the information between the distance between the dryer and the drying area and the set temperature of the drying area is provided to automate the drying operation.

[0010]

【Example】

 An embodiment of the present invention will now be described with reference to the drawings. In FIGS. 1 to 6, reference numeral 1 is a work floor of an automobile maintenance factory, on which floor 1 an automobile 2 as an object to be dried and a drying device 3 are provided. Are placed close together.

In the drying device 3, a plurality of casters 5 are rotatably attached to a gantry 4 assembled in a substantially H-shape so as to be movable on the floor surface 1, and columns 6 are erected on the gantry 4. The lamp mounting frame 7 is attached to the column 6 so that the height position can be adjusted.

The lamp mounting frame 7 is formed in a horizontally long rectangular box shape, and a substantially corrugated reflector 8 is mounted on the front surface thereof, and a heating lamp 9 such as an infrared lamp or a far infrared lamp is arranged along the valley 8a. Therefore, the heat radiation temperature of these lamps 9 is controlled by the controller to be described later in two ways, that is, the maximum heating temperature θmax and the set temperature θ.

A temperature sensor 10 such as a thermistor or a thermocouple capable of detecting the temperature of the reflector plate 8 is attached to the surface of the reflector plate 8, and a lamp mounting frame 7 has a lower surface provided with a temperature sensor 10 for driving the vehicle 2. A distance sensor 11 such as an ultrasonic sensor or a laser sensor capable of measuring the distance L to a dry portion (not shown) is provided, and these signals can be input to the controller 12.

The controller 12 is mounted on the back surface of the lamp mounting frame 7, and has a plurality of adjustment knobs (not shown) capable of setting the drying temperature and the total drying time T of the drying portion at appropriate positions thereof. A control circuit for turning on / off a timer (not shown) and the heating lamp 9 based on the set value of the adjustment knob and switching the heat radiation temperature of the heating lamp 9 and a memory storing various data. A circuit and an arithmetic circuit are provided.

In the storage circuit, the relationship between the distance L between the drying device 3 and the drying portion, the drying temperature of the drying portion, and the heat radiation temperature of the heating lamp 9 is experimentally obtained as shown in FIG. The heating lamp 9 is set to the maximum heat radiation temperature θmax, and the time t 1 required until the temperature of the drying portion separated from the drying device 3 by the distance L reaches the maximum temperature and the temperature is maintained by the experiment is shown in FIG. The experimental data of and are stored.

In the figure, 13 is a mounting bracket, which is connected with the lamp mounting frame 7 so as to be tiltable, and is provided with an appropriate clamp means for the support column 6, and 14 is a power cord.

It should be noted that in the above-described embodiment, it is possible to use a winding type measurer instead of the distance sensor 11, and in that case, it is described in the instruction manual of the drying device 3 or in the drying device 3. The temperature of the heating lamp 9 is adjusted based on the table of FIG. 4 attached to a place where the operator can easily see it. Although the intended purpose can be achieved without attaching the temperature sensor 10, in that case, from the measured value L of the distance measured by the distance sensor 11 and the drying temperature of the dry portion, the heating lamp 9 of the heating lamp 9 is determined based on FIG. Determine the set temperature θ.

Next, referring to FIG. 6 created from FIG. 4, a required time t1 required for the dry portions separated by the distance L to reach the maximum temperature is obtained, and this is set by a timer (not shown) attached to the controller 12. At the same time, the drying time t2, that is, the time obtained by subtracting the time t1 from the total drying time T is set by another timer. In this case, it is also possible to share a timer for setting the total drying time T as a timer for t2 and set t2 for this as T-t1.

Since the temperature sensor 10 is attached to the reflector 8 and the controller 12 is integrally attached to the lamp attachment frame 7 in the drying device configured as described above, the power cords 14 thereof are located at the rear. Since the surroundings of the vehicle 2 and the drying device 3 are tidy, the power cord 14 does not interfere with the drying work, and the power cord 14 is not heated and deteriorated as described later. However, heat resistance is not required for this, and the cost increase of this kind of device can be suppressed accordingly.

Next, when the dried portion of the automobile 2 which is the object to be dried is dried using the drying device, the automobile 2 is moved to a predetermined position on the floor surface 1 and stopped. After that, the drying device 3 is moved, and the drying device 3 is stopped at a position close to the drying part of the automobile 2 and the mounting bracket 13 is operated to adjust the vertical position and the posture of the lamp mounting frame 7, thereby adjusting the frame 7 Face dry area.

In this way, when the automobile 2 and the drying device 3 are positioned, the controller 12 is turned on to start the sequence operation by the temperature sensor 10, the distance sensor 11 and the timer. Of these, the distance sensor 11 measures the distance L between the drying device 3 and the automobile 2, and strictly speaking, the distance L between the ramp mounting frame 7 and the substantially dry portion, and inputs the signal to the controller 12.

The controller 12 stores the information of FIG. 4 stored in advance on the condition that the signal is input, the drying temperature of the dry portion input by the operator to the controller 12 according to the situation of the dry portion, and the total drying time T. Based on the above, the heating temperature θ of the heating lamp 9 is set, and the heating lamp 9 is turned on while holding this control signal, and at the same time, the timer is started to monitor the drying condition of the dry part and its drying time. To do.

The heating lamp 9 is adjusted to the maximum heat radiation temperature θmax by the controller 12 at the beginning of lighting, and radiates the heat ray toward the dry portion. In this case, the maximum heat radiation temperature θmax of the heating lamp 9 is detected by the temperature sensor 10, and its signal is input to the controller 12 to be confirmed.

When the heating lamp 9 starts to be irradiated with heat rays in this way, the temperature of the drying portion is rapidly increased to accelerate the drying, and then the heating and drying are further performed. When the stored initially set drying time t1 is reached, the temperature of the drying portion reaches the maximum temperature, and thereafter, the heat absorption and the heat radiation of the relevant portion compete with each other to maintain a constant temperature.

The elapse of the drying time t1 is detected by a timer, and when the signal is input to the controller 12, the controller 12 outputs the held control signal to the power source circuit of the heating lamp 9 to heat the lamp 9. Change the temperature from the maximum heat radiation temperature θmax to the set temperature θ.

Therefore, the heat radiation temperature of the heating lamp 9 is lowered as shown in FIG. 5, and a heat ray corresponding to the set temperature θ is irradiated toward the dry portion. In this situation, the temperature sensor 10 for detecting the set temperature θ is used. Confirmed by. Therefore, the temperature of the dry portion is also reduced and converges to the initially set temperature, and a good drying condition is formed under this temperature.

As described above, according to the present invention, at the beginning of the drying, the drying portion is rapidly heated and dried at the maximum heat radiation temperature θmax to shorten the required time t1 and to lower the drying temperature during the substantial drying. Since the main drying time t2 is set to be long, it is possible to prevent the occurrence of poor drying quality such as pinholes in the sheet metal putty applying portion or the coating portion, which is a dry portion, and to obtain a desired coating film hardness.

The above drying is performed for t 2 hours obtained by subtracting the initial drying time t 1 from the initially set total drying time T, and after the lapse of t 2 time, this situation is detected by the timer, and its signal is output. Is input to.

The controller 12 outputs a control signal to the power supply circuit on the condition of the above input signal, turns off the heating lamp 9 and turns off the light, and at the same time, activates a buzzer or a lamp provided at an appropriate position to finish the drying. Notice.

As described above, during the drying operation of the present invention, since the temperature sensor 10 is mounted on the reflector 8 or the lamp mounting frame 7 and the controller 12 is mounted integrally on the lamp mounting frame 7, their power cords are connected. Since the vehicle 14 and the drying device 3 are arranged rearward, the surroundings of the vehicle 2 and the drying device 3 are tidy, and the power cord 14 does not interfere with the drying work and is not deteriorated by being heated by the heating lamp 9.

Moreover, since the temperature of the dry part is controlled by detecting the temperature of the heating lamp 9, the temperature of the dry part can be controlled more accurately than the conventional one by detecting the temperature inside or inside the dry part. The quality of drying can be improved.

[0032]

[Effect of device]

 As described above, in the drying device of the present invention, the temperature sensor is arranged in the vicinity of the heating lamp and the drying portion and the drying device are arranged in an orderly manner. The drying operation can be performed safely and smoothly. In addition, since the heat radiation temperature of the heat radiation lamp is detected by the temperature sensor, the temperature of the heating lamp can be monitored more precisely than the conventional one that detects the temperature inside or inside the dry portion, and the temperature of the dry portion can be increased. Can be set to precision. Moreover, since the controller that can set the heat radiation temperature of the heating lamp based on the information about the distance between the drying unit and the drying part and the set temperature of the drying part is provided, the conventional controller is based on the information of the temperature sensor only. Compared with, the temperature of the dry part can be set with high accuracy, and there is a practical effect that this kind of drying operation can be automated.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of the present invention.

FIG. 2 is an enlarged perspective view showing an embodiment of the present invention.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG.

FIG. 4 is a chart showing a correlation between a lamp temperature, a distance, and a dry portion temperature, which is involved in temperature control of a controller used in the present invention.

FIG. 5 is a chart showing the correlation between the lamp temperature and the drying time, which is involved in the temperature control of the controller used in the present invention.

FIG. 6 is a chart showing a correlation between a drying time, a distance and a drying site temperature, which is involved in temperature control of a controller used in the present invention.

[Explanation of symbols]

 3 Drying device 9 Heating lamp 10 Temperature sensor 12 Controller

Claims (1)

[Scope of utility model registration request] 1. A drying apparatus comprising: a heating lamp for radiating heat rays; a temperature sensor for indirectly monitoring a temperature of a drying portion; and a controller for controlling a heat radiation temperature of the heating lamp by a signal of the sensor. The sensor is arranged in the vicinity of the heating lamp, and the heat radiation temperature of the lamp is detected by the temperature sensor. A drying device having a controller capable of setting a heat radiation temperature.