JPH04142221A - Method and device for loading liquid - Google Patents

Abstract

PURPOSE:To make it possible to maintain good environment of work area by interposing a valve mechanism between a nozzle and a vacuum source and also between a liquid feed source and a liquid suction source so that a channel is connected to each of the valves. CONSTITUTION:Changeover valves 58, 62, 46 provided in channels, which are respectively in communication with a liquid source 60, a liquid suction source 66 and an air vent port 44, are operated to close the channels, while a vacuum source 56 is actuated to suck the air in a torque converter 22 through channels 42, 34. After predetermined vacuum has been established, the vacuum source 56 and a changeover valve 54 are operated and said channel is closed and next only the valve 58 of the liquid source 60 is opened to feed oil to be loaded into the converter 22 through the channels 42, 34. Thereafter the valve 58 of the source 60 is opened and the valve 46 is opened to introduce air into the converter 22, while the oil in the channels 42, 24 is sucked as far as a nozzle body 32 so as to be captured by a trap 64.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a liquid filling device and a filling method thereof that make it possible to constantly fill a container with liquid to a predetermined liquid level. Regarding.

[Prior Art] There are devices that fill a predetermined amount of a liquid such as a soft drink or seasoning into a glass or plastic container, or a predetermined amount of lubricating oil into a device such as a torque converter.

With this device, the amount of liquid to be injected into the container is set in advance, the container to be filled is evacuated, and then a predetermined amount of liquid is injected into the container through a nozzle installed in the device. are doing.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, it is not possible to prepare liquid in advance according to the volume of the container and simply pour a predetermined amount into the container. Even if it is a container, there are of course slight differences in the volume of the container in many cases, so it is difficult to constantly and strictly fill the container to a predetermined liquid level.

This is a particularly important problem in torque converters, motors, and the like in which each container is required to be filled with liquid strictly to a predetermined liquid level. This is because the difference in the amount of capping occurs, for example, as a difference in viscous resistance, resulting in products of different quality even if they are mass-produced.

Therefore, one solution is to try to maintain a constant liquid level in each container by first adding more liquid (than the amount corresponding to the specified level) and then adding the specified amount of liquid. There is a method of draining the liquid according to the surface level, but this method requires a lot of time, is inefficient, and has the problem that a constant liquid level is not always ensured.

In addition, depending on the viscosity and surface tension of the liquid to be injected, liquid may accumulate at the injection port of the nozzle even after the liquid is filled into the container, and may leak outside the container injection port due to vibrations or its own weight, causing a workplace hazard. There is a problem that it is harmful to the environment.

One idea is to install a cover near the nozzle to catch the liquid that has accumulated in the nozzle, but this would impair work efficiency and cause problems due to the limited liquid filling cycle time and space around the nozzle. It is not an effective countermeasure as it requires modification of the system.

The present invention solves this type of problem, and makes it possible to always fill a container with liquid to a predetermined liquid level, and maintain a good environment in a liquid filling workplace. It is an object of the present invention to provide a liquid filling device and a liquid filling method that enable the liquid filling device and the liquid filling method.

[Means for Solving the Problems] In order to solve the above problems, a first invention provides a nozzle part inserted into an injection port of a container, and a nozzle holder that moves the nozzle part forward and backward with respect to the container. a pipe line connected to the nozzle section and connected to a vacuum suction source, a liquid supply source, and a liquid suction source; a vacuum suction source, a liquid supply source, and a liquid suction source connected to the nozzle section; and a valve mechanism interposed between the valve mechanism.

Furthermore, the second invention includes a step of inserting the nozzle part into the injection port of the container, a step of opening only the vacuum pipe line and creating a predetermined vacuum in the container, and a step of opening only the liquid supply pipe line and creating a predetermined vacuum in the container. The method is characterized by comprising the steps of: injecting a liquid into the nozzle; and opening an air release line and a suction line to suck the liquid up to at least the lower end surface of the nozzle.

[Operations] According to the above-described invention, the tip of the nozzle part is inserted into the nozzle inlet of the container. Since the nozzle section is already connected to the vacuum suction source, the liquid supply source, and the conduit communicating with the liquid suction source, first, the vacuum suction source and the nozzle section are brought into communication by opening the valve mechanism. As a result, the inside of the container is temporarily brought into a vacuum state. Next, communication with the vacuum suction source is cut off under the action of the valve mechanism, and the liquid supply source is communicated with the nozzle portion. This allows more than a predetermined amount of liquid to be injected into the container. After a predetermined amount or more of liquid is injected into the container, communication between the liquid supply source and the nozzle section is cut off. after that,
The liquid suction source and the nozzle portion are communicated with each other. The liquid suction source can suction the liquid injected in excess up to the tip of the nozzle part. Therefore, a predetermined liquid level can always be efficiently maintained.

Further, since the liquid remaining in the liquid inlet of the nozzle part and the fluid pipe line is forcibly sucked, the liquid does not leak from the nozzle part.

[Example] The liquid filling method according to the present invention will be described in detail below with reference to the accompanying drawings by giving preferred examples in relation to an apparatus for carrying out the method.

In FIG. 1, reference numeral 10 indicates a liquid filling device according to the present embodiment that fills a container, e.g., an EVA, or a torque converter with oil to a predetermined level. Nozzle holder part 30
It consists of.

The liquid filling device 10 has a pedestal 26 that holds the torque converter 22 at its lower part, and 4
Book supports (not shown) are extended, and the cylinder portion 1 is attached to a cylinder holding frame (not shown) held by these supports.
I am wearing 2. A plurality of guide posts 14 and one cylinder rod 16 are attached to a pedestal 26 from the cylinder holding frame.
The guide posts 14 are each provided with a slider 18 that extends to the side and slides in a vertically movable manner. One end of the slider 18 holds a moving frame 20. A nozzle holder portion 30 is fixed to the movable frame 20, and the movable frame 20 is configured to be displaced along the guide post 14 when the cylinder rod 16 moves forward or backward. In this case, use a proximity switch etc. to move the moving frame 2.
It is preferable to control a displacement amount of 0.

The nozzle section 28 is held by the nozzle holder section 30, and has a nozzle body 32 at its tip end that has approximately the same diameter as the liquid inlet 24 of the torque converter 22 and has a predetermined length. ing. In fact, the nozzle body 32 is cylindrical and has a tapered tip so that it can be easily inserted into the injection port 2-4. Note that the nozzle body 32 having a cylindrical shape, that is, the passage 34 is defined in the axial direction, has a passage 36 that opens at its side wall and communicates with the passage 40 . The passage 34 communicates with a passage 42 provided in the nozzle holder portion 30. In addition, in the figure, reference number 38 is the liquid inlet 24.
This is a sealing packing member that shuts off the nozzle portion 28.

As can be easily seen from FIG. 1, the nozzle holder portion 30 includes two curved passages 40, 42 therein,
One passage 40 has an atmosphere opening 44 that opens at a position offset from the center of the nozzle part 28, and the other passage 42
similarly has an opening 45 facing the center of the nozzle portion 28. In this case, as shown in FIG. 2, the passage 40 communicates with the atmosphere via a switching valve 46, and the passage 42 is also branched into three passages within the nozzle holder section 30, respectively. 30 and defines a vacuum suction port 48, a liquid supply port 50, and a liquid suction port 52. The vacuum suction port 48 which is the first opening is connected to the vacuum suction source 56 via the switching valve 54 , and the liquid supply port 50 which is the second opening is connected to the liquid supply source 60 via the switching valve 58 . The liquid suction ports 52, which are openings, are connected to a liquid suction source 66 via a switching valve 62 and a trap 64, respectively.

Next, the operation of the liquid filling device 10 configured as described above will be explained in relation to a liquid filling method.

The torque converter 22 as a workpiece is placed on a predetermined position on the pedestal 26, and the cylinder section 12 is operated until the nozzle of the nozzle section 28 is brought into close contact with the sealing packing member 38 and the end of the liquid inlet 24. Insert the main body 32. This operation isolates the inside of torque converter 22 from the atmosphere.

Liquid supply source 60, liquid suction source 66, and atmosphere opening port 4
switching valves 58.6 interposed in the pipes communicating with 4, respectively;
2. Activate 46 to close the line, while vacuum suction #+
56 is actuated to draw air within torque converter 22 through passage 42.34. As a result, the inside of torque converter 22 becomes a vacuum.

After a predetermined degree of vacuum is obtained, the vacuum suction source 5B and the switching valve 5
4 to close the pipe line, and then only the switching valve 58 of the liquid supply source 60 is opened to inject oil, which is the liquid to be filled, into the torque converter 22 through the passage 42.34. . At this time, excessive oil is added so as to fill the passage 34 of the nozzle portion 28. At this time, since the interior of the torque converter 22 is already in a vacuum state, oil can be quickly injected.

Next, the switching valve 58 of the liquid supply source 60 is closed, and the switching valve 46 of the liquid suction source 66 and the atmosphere opening port 44 are simultaneously opened to introduce air into the torque converter 22 filled with oil. The oil in the passage 42 and the oil in the liquid inlet 24 are sucked from the liquid suction port 52 to at least the tip of the nozzle body 32 and captured by the trap 64. Note that the oil in the trap 64 is supplied from the liquid supply source 60.
Return to

After the oil in the torque converter 22 is adjusted to a predetermined level by the above-described operation, the cylinder section 12 is operated again to remove the nozzle section 28 from the liquid injection port 24. This operation is regarded as one cycle, and the same operation is performed for the next torque converter 22 to fill it with oil to a predetermined level.

[Effect of the invention] According to the present invention, the following effects and advantages are achieved.

The container is connected to a vacuum suction source, a liquid supply source, and a liquid suction source through a nozzle part and a valve mechanism, and the container is connected to the atmosphere through a nozzle part and a valve mechanism, and the state inside the container is reduced to a vacuum by valve operation. , liquid injection, and liquid suction, it is possible to always maintain a predetermined liquid level efficiently, uniformly, and strictly. In other words, since the oil injected to the tip of the nozzle is sucked, the liquid level remains constant at all times.

In addition, the liquid remaining in the passage of the nozzle is forcibly sucked into the liquid suction source and the inside of the fluid pipe is emptied, so no liquid leaks from the nozzle, and therefore the work area is free of liquid. It won't be contaminated. In other words, the effect of improving the working environment can also be obtained.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a liquid filling device according to the present invention; FIG. 2 is a sectional view taken along line XX in FIG. 1. 10...Liquid filling device 12...Cylinder part 22...Torque converter 24...liquid inlet 28... Nozzle part 30... Nozzle holder part 42...Aisle 44... Atmosphere opening 46.54.58. 56...Vacuum suction source 60...Fluid supply source 66...Fluid suction source 62...Switching valve

Claims (2)

[Claims] (1) A nozzle part that is inserted into the injection port of the container, a nozzle holder part that moves the nozzle part forward and backward with respect to the container, and a vacuum suction source, a liquid supply source, and a liquid suction source that are connected to the nozzle part. A liquid filling device comprising: a pipe line connected to the nozzle section; a valve mechanism interposed between the nozzle section, a vacuum suction source connected to the nozzle section, a liquid supply source, and a liquid suction source. . (2) The process of inserting the nozzle part into the injection port of the container, the process of opening only the vacuum pipe and creating a specified vacuum inside the container, and the process of opening only the liquid supply pipe and injecting the liquid into the container. A liquid filling method comprising the steps of: injecting; and opening an atmosphere opening line and a suction line to suck the liquid up to at least the lower end surface of the nozzle.