JPH05200344A - Automatic controller for selant discharge - Google Patents

Abstract

PURPOSE:To determine the change in the viscosity of a sealant by detecting the change in room temp. and to stabilize the discharge of the sealant by adjusting air pressure for automatically discharging the sealant. CONSTITUTION:A nozzle 2 for discharging a sealant is installed in an automatic sealing machine. An air-type pressurizing means 3 for discharging a sealant 1 from a nozzle 2 is installed in the automatic sealing machine. A temp. detecting means 4 for detecting room temp. of a place where sealing work is performed installed in an automatic sealing machine. An air pressure control means 5 for controlling air pressure of the air-type pressurizing means 4, based on data from the temp. detecting means 4 is installed in the automatic sealing machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for automatically controlling the discharge amount by adjusting the air pressure in accordance with the viscosity of the sealant when discharging the sealant and performing a sealing operation. .

[0002]

2. Description of the Related Art When manufacturing an electric device such as a relay, a relay component is put in a case, a base is fitted into an opening of the case, a terminal or the like is passed through a hole in the base, and a sealant is applied to an outer surface of the base. The base is integrated with the case by discharging and applying, and the terminal and the base are integrated to seal the opening of the case.

The application of the above-mentioned sealing agent is performed by automatically discharging the sealing agent from the nozzle in the box of the automatic sealing machine. The air type pressurizing means is used to discharge the sealing agent from the nozzle. By the way, a sealing agent such as a synthetic resin adhesive has a problem that its viscosity changes depending on the room temperature (the temperature inside the box), and thus the discharge amount of the sealing agent varies depending on the room temperature. For this reason, in the past, a change in the discharge amount of the sealing agent was dealt with by manual adjustment.

[0004]

As described above, in the conventional case, since the change in the discharge amount due to the change in the viscosity of the sealant is manually adjusted, the discharge may be changed due to the variation in the skill of the operator. There is a problem in that the amount is not stable, and in the conventional case, the adjustment requires manual work, which is troublesome.

The present invention has been made in view of the above-mentioned problems of the conventional example, and its purpose is to estimate the change in the viscosity of the sealant by detecting the change in the room temperature, and SUMMARY OF THE INVENTION It is an object of the present invention to provide a sealant discharge amount automatic control device capable of automatically adjusting the air pressure for discharging the sealant on the basis of the above, responding to a change in viscosity, and stabilizing the discharge amount of the sealant.

[0006]

The automatic sealant discharge amount control device of the present invention comprises a nozzle 2 for discharging the sealant 1 and an air type pressurizing means 3 for discharging the sealant 1 from the nozzle 2. The temperature detection means 4 for detecting the room temperature of the place where the sealing work is performed, and the air pressure control means 5 for controlling the air pressure of the air pressure means 3 based on the data from the temperature detection means 4. By adopting such a configuration, the problems of the conventional example described above are solved and the object of the present invention is achieved.

[0007]

According to the present invention, therefore, the nozzle 2 for discharging the sealant 1 as described above, the pneumatic pressurizing means 3 for discharging the sealant 1 from the nozzle 2, and the sealing operation are performed. Temperature detecting means 4 for detecting the indoor temperature of the place,
By providing the air pressure control means 5 for controlling the air pressure of the air type pressurizing means 3 based on the data from the temperature detecting means 4, the change of the viscosity of the sealant 1 is changed to the change of the room temperature. It is estimated by detecting and the air pressure is automatically adjusted based on this to respond to changes in viscosity.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. In the figure, 6 is an automatic sealing machine, and various equipments for automatically filling the sealing agent 1 into an electric device such as a relay are incorporated in a box of the automatic sealing machine 6. That is, a nozzle 2 for ejecting a sealant 1 such as a synthetic resin adhesive, a robot device 7 for moving the nozzle 2, and an air type pressurizing means 3 for ejecting the sealant 1 from the nozzle 2 are illustrated. As shown in FIG. 1, it is installed in the box.

Further, the box of the above-mentioned automatic sealing machine 6 is provided with a temperature detecting means 4 comprising a temperature sensor,
Further, an air pressure control means 5 for controlling the air pressure of the air type pressurizing means 3 based on the data from the temperature detecting means 4 is provided. Then, the viscosity of the sealant 1 changes according to the change of temperature, and the relationship between the viscosity of the sealant 1 and the temperature is as shown in FIG. In the present invention, the room temperature is detected by the temperature detecting means 4 by utilizing the relationship between the viscosity and the temperature.
The temperature data detected by the temperature detection means 4 is sent to the air pressure control means 5 to estimate the viscosity of the sealant 1 obtained in the relationship of FIG. Nozzle 2 by controlling the air pressure in
The discharge amount of the sealing agent 1 is controlled to be constant even if the viscosity of the sealing agent 1 discharged from the device changes due to a temperature change.

The nozzle 2 may be a syringe type as shown in FIG. 2 (a) or a valpet type as shown in FIG. 3 (b). The arrows in FIGS. 2A and 2B indicate the pressurization by air. Further, FIG. 4 shows an example of filling the relay 17 with the sealant 1 by the nozzle 2. In FIG. 4, 8 is a case of the relay 17,
The relay parts are put in the case 8 and the base 9
Fit into the opening 10 of the case 8 and the hole 12 in the base 9
Through the terminal 11 and the like to the outer surface side of the base 9
The base 9 is integrated with the case 8 by discharging and applying, and the terminal 11 and the base 9 are integrated to seal the opening 10 of the case 9 to perform a primary seal. In this case, 8 is set at a predetermined position in the box of the automatic sealer 6, and the nozzle 2 is moved by the robot device 7 as shown by the arrow in FIG. 4 to discharge and apply the sealant 1.

By the way, in the relay 17 filled with the sealant 1 and sealed, in the type in which the coil terminal 13 to which the coil as the relay component is connected is not inserted into the hole 12 of the base 9, the coil terminal 13 and The primary seal between the coil block and the case 8 may be inconvenient, but as shown in FIGS. 5 and 6, a combination line of the base 9 and the coil block 15 (shown by a in FIGS. 5 and 6). ) Is provided with a coil terminal insertion hole 14 to reliably seal around the coil terminal 13 inserted into the coil terminal insertion hole 14 located on the coil line due to the capillary phenomenon of the sealant 1. Further, in this case, as shown in FIGS. 5 and 6, the combined portion of the base 9 and the coil block 15 in the vicinity of the corner portion of the case 8 is provided with the inclined surface 1.
By setting the number to 6, the sealant 1 can be made to flow around the coil terminal 13 more reliably and the periphery of the coil terminal 13 can be reliably sealed. The arrow B in FIG. 6 indicates the direction in which the adhesive flows.

[0012]

As described above, according to the present invention, the nozzle for discharging the sealant, the air pressure means for discharging the sealant from the nozzle, and the room temperature at the place where the sealing work is performed. Since the temperature detection means for detecting the temperature and the air pressure control means for controlling the air pressure of the air type pressure means based on the data from the temperature detection means are provided, the change in the viscosity of the sealant can be prevented. It can be estimated by detecting changes in the room temperature, and the air pressure can be automatically adjusted based on this to respond to changes in viscosity. Even if the viscosity changes, the discharge rate from the nozzle can be controlled to be constant. In addition, since the control of the discharge amount can be automatically performed instead of the manual adjustment, the quality is stable and the productivity is improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of the present invention.

2 (a) and 2 (b) are schematic perspective views of respective embodiments of the nozzle of the same.

FIG. 3 is a graph showing the relationship between the sealant and temperature of the above.

FIG. 4 is a perspective view showing a state in which a sealant is ejected and applied by the above nozzle.

FIG. 5 is a perspective view of the relay before being sealed with the above sealing agent.

FIG. 6 is a perspective view showing the vicinity of a corner portion of the case of the above relay.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealant 2 Nozzle 3 Air type pressurizing means 4 Temperature detecting means 5 Air pressure control means

Claims (1)

[Claims] 1. A nozzle for ejecting a sealant, and an air pressure means for ejecting the sealant from the nozzle,
It is characterized by comprising temperature detection means for detecting the room temperature of the place where the sealing work is performed, and air pressure control means for controlling the air pressure of the air pressure means based on the data from the temperature detection means. Automatic control device for discharge amount of sealant.