JPH05136110A - Sealing structure of liquid tank device with lifting/ lowering functions - Google Patents

Abstract

PURPOSE:To prevent the evaporation of a volatile solvent contained in the liquid tank of a liquid tank device equipped with a lifting/lowering function as a vapor-phase gas by keeping the liquid tank sealed even when lifting/ lowering operations are made. CONSTITUTION:By passing guide posts 3 and lifting/lowering tracking sections 4 through the notched sections 6a and 6b of doors 5a and 5b, the opening of a liquid tank 1 is sealed with the doors 5a and 5b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing mechanism in a liquid tank device with a lifting function having a guide post and a lifting / lowering traction part.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional liquid tank device with an elevating function has a guide post 3 and an elevating and pulling section 4, and a lid 7 is placed on the liquid tank 1 before starting the elevating operation. The structure was such that the lid 7 was closed again after the lifting and lowering was completed.

[0003]

In this conventional sealed structure, the liquid tank 1 cannot be sealed during the lifting operation,
When a volatile solvent is used in the liquid tank 1 or when a vapor phase is formed in the liquid tank 1, there is a problem that gas is diffused outside the liquid tank 1 during the lifting operation.

In particular, when a substance harmful to the human body is used in the liquid tank 1, the work surface is evacuated to a certain amount or more in accordance with legal regulations (eg, organic solvent poisoning prevention rule, lead poisoning prevention rule). This has to be done, which further increases the amount of gas released during the lifting operation.

It is an object of the present invention to provide a closed structure of a liquid tank device with a lifting function, which is designed to avoid the emission of volatile solvent or vapor phase gas in the liquid tank during the lifting operation.

[0006]

In order to achieve the above-mentioned object, in a closed structure of a liquid tank device with an elevating function according to the present invention, a basket is guided by a guide post, and the basket is moved by an elevating and pulling part to the liquid tank. In a liquid tank device with an elevating function for elevating in and out, there is a door that opens and closes the opening of the liquid tank, and the door opens and closes in the front and back or left and right. A cutout portion for inserting the towing portion is provided.

[0007]

According to the present invention, a door in which a plurality of guide posts and portions of the lifting / lowering pulling portion which are in contact with each other are cut out is attached, and the door is opened / closed forward / backward or left / right with respect to the front surface of the device, or the doors are provided in multiple stages. By opening and closing the door in conjunction with the lifting operation, the liquid tank is sealed even during the lifting operation.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG. 1, the door covering the upper opening of the liquid tank 1 is composed of two doors 5a, which are divided into left and right.
It consists of 5b. The two doors 5a and 5b have a cutout portion 6a fitted to the outer circumferences of the two guide posts 3 and 3 and a cutout portion 6b engaged with the elevating and pulling portion 4 at their abutting edges.
And have.

The cutout portion 6a of the two doors 5a and 5b is
When they are butted, they closely contact the outer circumferences of the guide posts 3, 3. Further, the cutout portions 6b are butted to each other to such an extent that they do not hinder the vertical movement of the elevating and pulling portion 4. Further, the two doors 5a and 5b are moved in the front-rear direction.

The basket 2 moving in the liquid tank 1 is guided by two guide posts 3 and is moved up and down by two lifting and pulling parts 4 such as chains and wires.

The basket 2 at the work origin position A starts descending after the doors 5a and 5b are opened in the front-rear direction with respect to the front surface of the apparatus. When the basket 2 is put into the liquid tank 1, the two doors 5a and 5b are closed. Therefore, the elevating and pulling unit 4 moves up and down through the cutouts 6b of the doors 5a and 5b.

The basket 2 continues to descend while the doors 5a and 5b are closed, and when the intended work of the apparatus such as cleaning and reflow is completed, the basket 2 starts to rise again, and the door 5 is reversed in the reverse order of the forward path.
The opening and closing of a and 5b are performed, and the cycle of the apparatus is completed.

(Embodiment 2) In the embodiment shown in FIG. 2, the number of the lifting / lowering tow portions 4 of the doors 5a and 5b is one, and the number of the cut-out portions 6b to which the lifting / lowering tow portions 4 of the doors 5a and 5b are placed is one. Therefore, the airtightness of the portions of the doors 5a and 5b which the lifting / lowering pulling portions come into contact with is doubled. Door 5a,
The opening and closing of 5b is performed back and forth with respect to the front of the device, and the cycle of the device is similar to that of the embodiment shown in FIG.

(Embodiment 3) In the embodiment shown in FIG. 3, the lifting / lowering pulling section 4 such as a chain or a wire is provided in one, and the door 5 is used.
It is possible to improve the airtightness by providing only one cut-out portion 6b with which the elevating and pulling portion 4 of a and 5b abuts.
It is similar to the embodiment shown in FIG. In this embodiment, the doors 5a and 5b can be opened and closed to the left and right with respect to the front of the apparatus by the two guide posts 3a and 3b which are divided. When the doors 5a and 5b are opened and closed with respect to the front side of the device, it is necessary to secure a space for opening the doors 5a and 5b on the front side of the device, and the work original position is far from the front face of the device.
In this embodiment, since the doors 5a and 5b are opened left and right, the liquid tank 1
With a large-sized device having a large opening area, the work becomes easy. The cycle of the device is similar to that of the embodiment shown in FIG.

(Embodiment 4) In the embodiment shown in FIG. 4, the basket 2 moving in the liquid tank 1 is guided by the two guide posts 3 and lifted and pulled by a chain, wire or the like 4
The raising and lowering operation is performed in the same manner as in the embodiment shown in FIGS. 1 to 3 described above, but the doors 5a and 5b having a multi-stage structure are used.
This improves the airtightness.

After the upper doors 5a, 5b are opened, the basket 2 in the original working position is guided by the guide posts 3b to start descending, and when it moves to a position below the doors 5a, 5b,
The upper doors 5a and 5b are closed. Then basket 2
After reaching the lower doors 5a and 5b and opening the lower doors 5a and 5b, they are guided by the guide post 3c and start descending.

When the basket 2 reaches below the lower doors 5a and 5b, the lower doors 5a and 5b are interlocked so as to close. The upper and lower doors 5a and 5b are not opened and closed at the same time. When the upper door is opened, the lower door is closed and the lower door is opened. At time, the upper door is closed.

The basket 2 continues to descend with the lower door closed, and starts to rise again when the target work of the apparatus such as cleaning and reflow is completed, and the upper and lower doors 5a and 5b are reversed in the reverse order of the forward path. It is opened and closed and the device cycle ends.

According to the present embodiment, when the work surface needs to be exhausted with a certain amount of air or more, since the exhaust is not influenced in the liquid tank 1, the gas emission can be suppressed.

[0021]

As described above, according to the present invention, it is possible to avoid the emission of volatile solvent in the liquid tank or vapor phase gas.

Further, by opening and closing the door to the left and right with respect to the front of the device, there is no need to consider the opening and closing space of the door on the front of the device as in the case of opening and closing the door forward and backward with respect to the front of the device. There is an effect that it can be miniaturized.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing a third embodiment of the present invention.

FIG. 4 is a perspective view showing a fourth embodiment of the present invention.

FIG. 5 is a perspective view showing a conventional liquid tank device with a lifting function.

[Explanation of symbols]

 1 Liquid Tank 2 Baskets 3, 3a, 3b, 3c Guide Posts 4 Lifting / Drawing Parts 5a, 5b Doors 6a, 6b Cutout Parts

Claims (1)

[Claims] 1. The basket is guided to a guide post,
A liquid tank device with an elevating function for elevating the basket in and out of the liquid tank by an elevating and pulling unit, having a door that opens and closes the opening of the liquid tank, and the door opens and closes in the front-rear direction or the left-right direction. In addition, a sealing structure for a liquid tank device with an elevating function, characterized in that a cutout portion for inserting the guide post and the elevating and pulling portion is provided.