JPS60193898A - Vacuum filler for liquid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a complete filling device for filling a predetermined container with an immersion body.

[Prior art and its problems] This vacuum filling device, especially a device for automatically filling (injecting) cooling water into an automatic radiator, was filed in a patent application filed in 1983.
A method related to No.-143386 was previously proposed by the present applicant and others.

According to Japanese Patent Application No. 57-143386, a full-water detection tank is provided in the middle of a vacuum path extending km between the vacuum source and the filling gun, and when filling cooling water, the cooling water is introduced to the above-mentioned full-water detection tank. By activating the liquid @ detector installed in the water storage tank, it is possible to detect that the radiator, which is the container to be filled, is full of water.

In other words, in the above device, due to the requirement for explosion-proof construction and accuracy in full-water detection, full-water detection is performed at a location distant from the injection port of the container to be filled, but when filling the cooling water, Not only must the radiator be filled to an amount equal to the actual capacity of the radiator plus the full capacity of the full water detection tank, but also the cooling water in the full water detection tank must be recovered after water adjustment is detected. Therefore, there is a problem in that the filling time (takt time) becomes long, especially in an automated cooling water filling device.

Purpose of the Invention] In view of the above points, the present invention meets the above-mentioned requirements for an explosion-proof structure and accuracy in full-water detection, while also providing a method for detecting a full-water container as close as possible to the injection port of the container to be filled. The objective is to shorten the filling time by eliminating wasted time by detecting everything.

[Structure of the Invention] The present invention is characterized in that a pressure detection valve for detecting a full state is provided in the nozzle portion of the filling gun, instead of the conventional tank system, as the full state detection means.

〔Example〕

Hereinafter, a more specific embodiment of the present invention will be described based on the drawings.

Is Figure 1 the invention? The figure shows a case where it is applied to a cooling water filling device for a radiator. 1 is a car body transport line using a platform 2, 3 is an industrial robot installed on the line side, and a car body B transported by the platform 2 is shown. Once positioned at a predetermined position, the filling gun 5 temporarily attached to the tip of the robot arm 4 is applied to the inlet P of the radiator R, which is the container to be filled, to automatically fill the cooling water.

As shown in FIG. 2, the filling gun 5 includes a nozzle 7 attached to the tip of the robot arm 4 via an equalizing mechanism 6, and a pair of clamp claws 8 provided on the outer periphery of the tip of the nozzle 7. An air cylinder e for opening and closing the clamp claw 8 is provided.

Since the clamp claw 8 is guided by the guide m10, it is opened and closed by the expansion and contraction of the air cylinder 9, thereby engaging the pressure inlet P# of the radiator R and sealing the seal rubber 11i at the tip of the nozzle 7. make elastic contact with the inner circumference of the

Moreover, the upper end of the nozzle 7 has a pressure of +! which uses air pressure as a signal medium. Il'fl] valve (flow pressure switch)
12 is attached. This pressure detection valve 12 is the third
As shown in the figure, a case 13, a slidable plunger 14 built into the case 13, and a set spring 15. A set spring 160 applies preload to the plunger 14 by a set load, so that the tip of the plunger 14 faces into the metal nozzle passage 17. Then, in case 13, po) 18.19 is formed.
, one boat 18 is open to the atmosphere, while the other boat 19 has a pressure signal path 2 including a pressure source 20 and a back pressure sensor (pressure switch) 21 as shown in FIG.
Air is introduced through the metal.

Once, as will be described later, when the inside of the radiame R becomes full of water, the pressure inside the nozzle passage 17 rises and falls, and when the pressure inside the nozzle passage overcomes the set load of the set spring 15, the plunger 14 slides. baud)
19 @ is occluded, and the back pressure of the boat 19 increases as the boat 19 closes, so by detecting it with the spinal pressure total back pressure sensor 21, the full water state 9 can be known.

Here, the circuit configuration of the cooling water supply system and the specific drawing system will be explained with reference to FIG. A supply passage (i-body supply passage) 24, a vacuum passage 31 leading from the vacuum pump 25 to the nozzle 7, and another Eku pump 26
A collection passage 27 extending from the nozzle 7 to the nozzle 7 is provided.

A discharge pump 28 and a switching valve 29 for opening and closing the passage are provided in the middle of the cooling water supply passage 24, and the switching valve 29 opens and closes in response to switching pressure based on the operation of the solenoid valve 30. . Furthermore, in addition to a solenoid valve 32 and a separator 33, a switching valve 34 is provided in the middle of the vacuum passage 31. The switching valve 34 receives a switching pressure signal P based on the operation of the solenoid valve 36.
, while the separator 33 has a function of removing liquid contained in the suction air.

On the other hand, in the middle of the recovery passage 27, in addition to the valves 36 and 37, a switching valve 39 that opens and closes in response to a switching pressure signal P3 based on the opening and closing of the magnetic valve 38, and a recovery tank 40 are provided. . The recovery tank 40 includes a pressurizing passage 42 including 41 electromagnetic valves, and a solenoid valve 43 branched from the pressurizing passage 42 . an atmosphere opening passage 44 having an atmosphere opening passage 44;
6. Then, the pressurizing passage 42 and the return passage 4
Pressure return passage with 6? It consists of

Next, the operation of the device constructed as above will be explained.

First, assuming that the filling gun 6 is correctly set to the inlet P of the radiator R as shown in FIG. In response, the switching valve 34 is opened, and the vacuum pump 25 performs evacuation. Then, when the radiator 8 yen is attracted to a predetermined vacuum state, the solenoid valve 32 and the switching valve 34 are closed.

Subsequently, a switching pressure signal P based on the opening operation of the solenoid valve 30,
In response, the switching valve 29 is opened, and the discharge pump 28 is operated to valve the p filling gun 5 to supply and fill the cooling water to the radiator H.
As shown in the figure and FIG. 4, when the radiator R is filled with water, the flow of cooling water in the nozzle 7 is stopped and the water pressure acts on the plunger 14 of the pressure detection valve 12, so that the plunger 4 is The boat 19 is closed by retreating.

As a result, the back pressure on the pressure signal passage 22 side increases and the contact of the back pressure sensor 21 turns ON, which detects the radiator RO full water state, and the solenoid valve 30 and the switching valve 29 close, and the radiator R Cooling water supply to the unit stops. After that, the switching valve 39 and solenoid valve 37 of the recovery passage 27 and the solenoid 5P43 of the atmosphere release passage 44 are each opened to remove the residual pressure in the system. Then, the clamp claw 8 of the filling gun 5 performs an unclamping operation, and the industrial robot 3 returns to the original position.

Simultaneously with this return operation of the industrial robot, the solenoid valve 43 closes while the solenoid valve 36 opens, and the vacuum pump 2
6, the cooling water remaining in the cooling water supply passage 24 is recovered to the recovery tank 40. And solenoid valve 36
．． 37 and the switching valve 39 are closed, and the solenoid valve 41 of the pressurizing passage 42 and the solenoid valve 45 of the return passage 46 are kept open for a certain period of time, and by pressurizing the recovery tank 40, the recovery is performed first. All of the cooling water collected in the tank 40 is returned to the main tank 23 to complete one cycle.

Actual self in 2 games! In the assembly line of IIllJM-, a mixed reproduction mode is adopted in which one plant per ring is passed through the line, and the cooling water is, for example, type A cooling water containing 30% antifreeze, antifreeze/l [containing 50%]. In many cases, a plurality of types of cooling water, such as eight types, are prepared, and in that case, each device in the area surrounded by the imaginary line C in FIG. 4 may be added according to the type of cooling water.

In this way, even if there are multiple cooling water units, by collecting the cooling water stored in the system each time, filling multiple types of cooling water can be performed using the same filling gun without worrying about contamination. be able to.

Of course, the present invention can be applied not only to cooling water but also to other types of enclosure filling operations such as oil and gasoline.

〔Effect of the invention〕

As explained above in detail, according to the present invention, since the pressure is detected by the pressure detection valve provided on the full water state AT nozzle of the container to be filled, it is not necessary to fill the tank with excess water by the capacity of the full water detection tank, unlike the conventional method. This eliminates the need for wasteful work such as collecting the handle all the time, making it possible to shorten takt time while meeting the desired requirements of explosion-proof construction and high-water detection accuracy.

[Brief explanation of drawings]

Fig. 1 is an overall explanatory diagram showing one embodiment of the present invention, Fig. 2 is a sectional view showing details of the filling gun, Fig. 3 is a Fr side view showing details of the pressure detection valve, and Fig. 4 is a filling gun. FIG. 2 is a circuit diagram illustrating the circuit configuration of a cooling water supply system and a vacuum evacuation system. 6... Filling gun, 7... Nozzle, 8... Clamp claw, 12... Pressure detection valve, 21... Back pressure sensor,
B...Vehicle body, R...Radiator, P...Inlet. 2 people outside

Claims (1)

[Claims] ll) The nozzle of the filling gun is pressed against the injection port of the sealed container to be filled, and the inside of the container to be filled is evacuated. 1. A vacuum filling device for liquid, characterized in that the nozzle is provided with a pressure detection valve for detecting a full state in the container to be filled.