JPS6140641Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a liquid filling device used when filling a container with a liquid material such as paint, and the liquid material drips onto the container at the end of filling. It is an object of the present invention to provide a liquid filling device that does not cause the risk of contaminating a container and has a beautiful filling state.

(Prior art and its problems) Conventionally, when filling a predetermined container with a liquid, there is generally known a device that pushes out the liquid from a nozzle while sequentially moving the containers lined up on a conveyor or the like below an injection nozzle. There is.

By the way, in such devices, there is a risk that the liquid remaining at the tip of the nozzle may accidentally drip around the moving container immediately after filling and contaminating the container, so there is a need to prevent this residual liquid from dripping, and as a means to do so, For example, it is conceivable to use the technique already disclosed in Japanese Patent Publication No. 48-41674.

However, in such disclosed technology, a single S-shaped nozzle is used in which filling is directed downward, and since the number of nozzles is only one, the inner diameter of the nozzle is reduced in order to ensure a practical filling speed. The nozzle tip has to be relatively large and is directed downward, leaving no room for capillary action.
It was not possible to prevent the residual liquid from dripping at the tip of the nozzle.

Furthermore, in the disclosed technology, since there is only one nozzle as described above, the injection position of the liquid is concentrated at one point on the inner bottom surface of the container during filling.
Bubbles were generated in the liquid, and there was a risk that the filling state would be dissatisfied.

(Means for Solving the Problem) In this invention, in a liquid filling device equipped with a liquid outflow nozzle formed by drilling a plurality of liquid outflow holes at the tip of a nozzle body, the liquid outflow nozzle is A liquid outflow pipe having an inner diameter of 1 mm to 6 mm is provided in the liquid outflow hole, and the liquid outflow pipe provided at the periphery of the liquid outflow nozzle is bent into an arc shape with its tip directed outward. By providing a liquid filling device consisting of the following, it is possible to prevent inadvertent dripping of residual liquid and to prevent the generation of bubbles during filling.

(Embodiment) As shown in FIGS. 1 to 3, an embodiment of the present invention is formed by drilling a plurality of liquid outflow holes 2, 2, . . . on the lower surface of the tip of the nozzle body 1. In a liquid filling device equipped with a liquid outflow nozzle 3 made of gun metal, liquid outflow pipes 4, 4, made of brass are installed in the liquid outflow holes 2, 2, .
... is fitted and installed, and the liquid material outflow nozzle 3
The liquid outlet pipes 4', 4', . The reason why the liquid outflow pipes 4', 4'... are curved in an arc shape with their tips directed laterally is to increase the outflow resistance of the liquid remaining inside and prevent accidental dripping. be.

The reason why only the peripheral edge is curved is that the liquid flowing inside the nozzle body 1 encounters resistance from the inner peripheral surface of the nozzle body 1, and the flow velocity in the peripheral area is lower than that in the center. This is because liquid components tend to remain.

Furthermore, the reason why the tips of the peripheral liquid outflow pipes 4', 4' are directed outward is because the liquid outflow pipes 4', 4' in the center
This is to separate the injection position of the liquid material flowing out from 4'... and the liquid material flowing out from the liquid outflow pipes 4', 4'... on the periphery to avoid concentration of injection positions and to prevent the filling from foaming. be.

In this embodiment, liquid outlet pipes 4', 4', .
..., 4', 4',..., the liquid outflow pipe 4', which is installed in the center of the liquid outflow nozzle 3,
4'... is around 5 mm long, and the liquid outflow pipes 4', 4',... provided on the periphery are of the same length.
Use one of about 10 to 15 mm (outer diameter 2 to 8 mm).
mm, inner diameter 1 to 6 mm, material BS or SUS).

The reason for this is that if the inner diameter is less than 1 mm, the liquid will flow out (especially for liquids with high viscosity).
Outflow resistance is too large or liquid outflow pipes 4, 4
. . , 4', 4', . . . are clogged with dust, etc., which is a problem. On the other hand, if the inner diameter is larger than 6 mm, there is no room for capillary action to occur as in the conventional case, causing the liquid to drip unexpectedly, and if the viscosity of the liquid is small, the surface of the liquid in the container 16 after the liquid has flowed out. This is because there is a fear that the container 16 will be contaminated by jumping up from the container.

Further, in FIGS. 1 and 2, reference numeral 5 denotes a liquid supply pipe that supplies liquid to the liquid outflow nozzle 3, and 6
9 is a piston that reciprocates as shown by an arrow 8 via a bendable arm 7; 9 is a rotary disk that causes the arm 7 to reciprocate via a shaft 10 attached to the base of the arm 7; 11 is a shaft an adjustment knob that adjusts the reciprocating distance of the arm 7 and the piston 6 by raising and lowering the body 10 along the guide groove 12;
13 is an adjustment scale of the adjustment knob 11, and 14 is a valve 15 that opens and closes the liquid outlet holes 2, 2, ... at the tip.
The valve rod 14 uses water as a lubricant and is raised and lowered by an air cylinder for valve actuation mounted on the upper part.

When filling a container with a liquid using the liquid filling device of the above embodiment, for example, as shown in FIGS. 1 and 2, the valve rod 14 is lowered and the valve 15 is inserted into the liquid outflow hole. 2, 2, . After that, the circular disk 9 is rotated, and the piston 6 is inserted through the shaft body 10 and the arm 7.
The liquid is sucked and filled from the liquid supply pipe 5 into the liquid outflow nozzle 3 by moving the valve backward, and then the valve rod 14 is raised to remove the valve 15 from the liquid outflow holes 2, 2, . . . The liquid outflow pipes 4, which are provided in the liquid outflow holes 2, 2, .
4, . Just seal it up and repeat the same steps to fill it.

(Effects) As explained above, in this invention, the nozzle is equipped with a liquid outflow pipe with an inner diameter of 1 mm to 6 mm, and the liquid outflow pipe at the periphery where liquid tends to remain is Since the container is curved in an arcuate shape oriented in the opposite direction, the outflow resistance of the remaining liquid can be increased to prevent accidental dripping, and the container can be prevented from becoming contaminated.

In addition, since the tips of the liquid outflow pipes on the peripheral edge are oriented outward, the injection positions of the liquid flowing out from the plurality of liquid outflow pipes can be spaced apart to avoid convergence of the injection positions, and foam Inadequacies in filling conditions due to occurrence are avoided.

[Brief explanation of drawings]

Fig. 1 is a cutaway front view of a main part of an embodiment of the present invention, Fig. 2 is a side view of the same embodiment, and Fig. 3 is an enlarged longitudinal cross-sectional view of a main part of a liquid discharge nozzle that can be used in the same embodiment. . 1...Nozzle body, 2...Liquid outflow hole, 3...
...liquid material outflow nozzle, 4...liquid material outflow pipe provided at the center of the nozzle, 4'...liquid material outflow pipe provided at the periphery of the nozzle.

Claims (1)

[Scope of utility model registration request] In a liquid filling device equipped with a liquid outflow nozzle formed by forming a plurality of liquid outflow holes at the tip of a nozzle body, the liquid outflow hole of the liquid outflow nozzle is provided with a liquid having an inner diameter of 1 mm to 6 mm. A liquid filling device is provided with a liquid outflow pipe, and the liquid outflow pipe is provided at the peripheral edge of a liquid outflow nozzle and is bent into an arcuate shape with its tip directed outward.