JPH0394860A - Automatic controller for discharge pressure of sealer - Google Patents

Abstract

PURPOSE:To surely measure the temp. for regulation of a discharge pressure over a long period of time by constituting the automatic pressure regulating valve provided on a sealer supplying piping in such a manner that the valve controls the discharge pressure so as to attain the correct discharge quantity meeting the outdoor air temp. measured by an outdoor temp. sensor. CONSTITUTION:The temp. of the outdoor air is measured by the outdoor air temp. sensor 8 and this signal is inputted to a controller 9. The opening degree of the pressure regulating valve 6 disposed on a sealer supplying circuit 5 is automatically regulated by an actuator 7 in accordance with the discharge pressure data to attain the adequate discharge quantity of the sealer 4 meeting the preset outdoor air temp. of this controller 9.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Application in Industry 1> The present invention relates to an automatic sealer discharge pressure control device in a sealer coating device. BACKGROUND ART In the body process of a 1'l motor vehicle, a sealer having an L rating of 11 in terms of rust prevention performance, appearance quality, etc. is applied.

This sealer is a viscous material and is cured after application. Conventionally, this sealer application device sucks the sealer from the sealer tank with a pump and discharges it at a constant pressure. Adjust the force to the specified pressure using the pressure regulating valve.
This is a yoke that is installed on the robot and supplies it to the sear gun.

Setting the pressure of the sealer to a predetermined IE of 56 with the pressure regulating valve means that the viscosity of the sealer changes due to temperature differences in the four seasons.
Since the amount of sealer and ffl coming out from the sealer gun fluctuates, the pressure adjustment valve is set to 1-adjustment to adjust the pressure of the sealer to the appropriate amount. A device for automatically controlling this sealer adjustment was provided in JP-A-62-176571. 1. Problems to be solved by the invention
For fil, the viscous substance filled in the cylinder container is pressed by a piston with air pressure and discharged.
, install a temperature sensor inside the cylinder container l7, detect the temperature of the viscous material inside the cylinder container, and use this confidence as a pressure regulator? i?
input to ifl, and output from force adjustment l1 (?
．． The air pressure is controlled by inputting the number into an automatic pressure regulating valve installed in the same air path that depresses the piston, and the amount of viscous material discharged is adjusted to the crystallinity of the viscous material per person J in the cylinder container. It is a control system, and b. In this method, since the temperature of the viscous ladle is directly detected by the temperature sensor, there is a problem that the viscous substance (sealer) adheres to the quality sensor and hardens, making temperature measurement impossible.

nine. 3! Means for Solving the Problems> The present invention has been made in order to remedy the problem mentioned in -1-, and its characteristic configuration is that the sealer is removed from the sealer tank.
There is a pump that sucks in the liquid and discharges it at a constant pressure; Schiller's 1+: Predetermined force II-1
A pressure regulating valve that adjusts the pressure to 1) and a sealer gun that discharges the sealer whose pressure is regulated by the pressure regulating valve and applies it to the object to be coated. An actuator that adjusts the movement is provided, and an outside temperature sensor that detects the outside temperature, and an appropriate discharge amount and flow rate of the sealer according to the outside temperature are set in advance, and a signal from the outside temperature sensor is inputted. That pressure! The actuator of the 81m valve is equipped with an output shift of 1 tot l'l7-ra. 〈Function〉 According to the configuration described in ``The temperature of the outside air is measured by the outside temperature sensor, this No. 1.4 is inputted to the controller, and the appropriateness of the sealer according to the outside temperature set in advance is determined by this controller. Based on the discharge 1-F data, which is used as the output amount, the opening degree of the pressure adjustment valve arranged in the sealer supply circuit L is adjusted 11 times by an actuator. Embodiments Hereinafter, embodiments of this invention will be explained based on the drawings. In FIGS. 1 and 2, 1 is a sealer tank, 2 is a rlH, and a bomb 53 that sucks the sealer in the sealer tank 1 and discharges it at a constant pressure is a robot. A siren gun 4 is attached and connected to the discharge port of the pump 2 through a pipe 5. 10 is the control unit
yz, which controls the opening/closing valve 11 of the bomb 2 and the gun opening/closing valve 12. There are no people in the pipe 51.
A pressure regulating valve 6 having a boat 6a and an outlet boat 6b is provided, and a primary pressure gauge 13 is connected to the pressure regulating valve 6 at a constant flow rate.
However, a secondary FF force meter 14 is also placed on the downstream side.
As shown in FIG. 3, the pressure regulating valve 6 is provided with an actuator 7 consisting of an encoder 7a and a motor 7b for automatically adjusting the opening degree of the valve. In order to control this actuator 7, it is provided with an outside air temperature sensor 8 that measures outside air temperature, and a controller D-9 that inputs a signal from this outside air temperature sensor 8. The controller 9 is composed of an input/output control section 9a, a control section 9b, and a servo circuit 9C, and sealer discharge pressure data is set according to the outside temperature. The setting of the sealer discharge pressure data according to the outside temperature is as shown in Fig. 4, when X2 is set to an appropriate discharge rate of 11 degrees.
Depending on the outside temperature 'ro~'I゛6, the discharge temperature N'' +~・I
), the power is set in advance to be adjusted. Since the present invention is constructed as described in E, outside temperature information is inputted to the input/output control section 9a of the controller 9 by the outside temperature sensor 8, and the pressure regulating valve 6 is inputted from the encoder 7a. The opening position information is input to the input/output control section. These input signals are output to the calculation control section 9b, and the calculation control section 9b
to the discharge pressure F)1 to ensure the proper discharge amount X2 by comparison calculation with the preset appropriate discharge amount data at
A signal is output from the servo circuit 9C to the motor 7b so that the opening of the pressure regulating valve 6 is controlled to a discharge level corresponding to the outside temperature. As a result, the sealer~1 discharged from the sealer gun 4
} 1. Even if there are fluctuations in the outside temperature, the power source is always available - Electricity Suitability 11:
The discharge amount is ensured. According to this book, the sealer supply piping I,
The automatic pressure adjustment valve installed at the outside air temperature sensor is used to determine the appropriate amount of sealer according to the outside air temperature. There is no contact with the pump, and temperature measurements for adjusting the discharge pressure can be reliably obtained over a long period of time. In addition, 1] The dynamic pressure regulating valve consists of a motor that controls the opening degree of the valve, and an eshicoder that detects the rotation speed of Tanabata.The detection signal of this encoder and the outside temperature are measured by the outside temperature sensor. Since the signal is input, the control is performed, and the output is output to the motor, the amount is always controlled to a predetermined amount and maintains stable quality. be.

[Brief explanation of drawings]

Claims (1)

[Claims] A pump that sucks sealer from a sealer tank and discharges it at a constant pressure, a pressure regulating valve that adjusts the pressure of the sealer discharged from this pump to a predetermined pressure, and a pressure regulating valve that discharges the sealer whose pressure is regulated by this pressure regulating valve. In the sealer application device, which consists of a sealer gun that applies to the object to be coated, the pressure regulating valve is equipped with an actuator that automatically adjusts the opening degree, an outside temperature sensor that measures the outside temperature, and a sealer gun that applies the sealer according to the outside temperature in advance. An automatic sealer discharge pressure control device comprising: a controller that inputs a signal from the outside temperature sensor in which discharge pressure data for setting a proper discharge amount is set, and outputs the signal to the actuator of the pressure regulating valve.