JP2001262925A - Opening/closing device for enclosed vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely and safely open or close an upward/downward sliding type door in an enclosed vessel. SOLUTION: In an opening/closing device 3 for a door 2 of an enclosed vessel 1, the door 2 sliding upward/downward, a drive roller 4 and an idle roller 5 are arranged up/down. Around both the rollers 4, 5 a running body 7 to run upward/downward is wound, and a counter-balance weight 10 is provided at one of upward/downward running parts in the running body 7 while the door 2 is connected to the other upward/downward running part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device for an airtight container in a sterilizer, a vacuum cooling device, or the like.

[0002]

2. Description of the Related Art Some sterilizers have a door that slides in a vertical direction. That is, the opening provided on the front surface of the sterilization tank as a closed container is opened and closed by sliding the door up and down. Usually, the door is automatically opened and closed by an electric motor, but it is necessary to open and close the door securely and safely. For example, packing around the opening in the sterilization tank is provided to abut on the back surface of the door. When the door is opened, the packing and the door are stuck together, and between the two. If the frictional force is large, the door may not open. Therefore, even when such a situation occurs, it is necessary to ensure that the door is opened and closed.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to reliably and safely open and close a vertically slidable door in a closed container.

[0004]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is an apparatus for opening and closing a closed container having a door which slides vertically. , A drive roller and an idle roller are disposed vertically, and a traveling body that travels in the vertical direction is wound around the two rollers, and a counterweight is provided on one of the vertical traveling portions of the traveling body, and the other vertical traveling portion is provided. The above-mentioned door is connected.

[0005]

Next, an embodiment of the present invention will be described. The closed container according to the present invention is provided with an opening on the front surface, and is provided with a door for opening and closing the opening. The door slides up and down along the guide rail. A packing is provided around the opening in the sterilization tank so as to be in contact with the rear surface of the door.

A door opening / closing device is provided below the closed container. The door opening / closing device includes a driving roller and an idle roller arranged vertically, and a traveling body that travels in a vertical direction is wound around these rollers.
And, in one of the up and down traveling parts of this traveling body,
A counterweight is provided, and a lower end of the door is connected to the other up-and-down traveling part via a connecting member. When the door is at the uppermost position, the opening is closed by the door, and when the door is at the lowermost position, the opening is opened.

Here, of the drive roller and the idle roller, the drive roller is disposed on a lower side, and the idle roller is disposed on an upper side. In addition, driving means such as an electric motor is connected to the driving roller.

[0008] Further, as the traveling body, for example, a chain is used. When a chain is used as the traveling body, a sprocket is used as the rollers.

The traveling body is constituted by a first traveling body and a second traveling body. The first traveling body is wound around the driving roller, and the second traveling body is wound around the idle roller. ing. That is, in the first traveling body, one end thereof is connected to the counterweight, the other end is connected to the lower end of the door, and an intermediate portion is engaged with the drive roller, and the whole is U-shaped. Are located in On the other hand, in the second traveling body, one end is connected to the counterweight, the other end is connected to a lower end of the door via a connecting member, and an intermediate portion is engaged with the idle roller, The whole is arranged in an inverted U-shape. In this way, the door and the counterweight are integrally connected via the first traveling body and the second traveling body, and move in conjunction with each other.

[0010] Further, the counterweight is set to be approximately the same weight as the door, and the counterweight and the door are balanced via the traveling body. Then, in the traveling body, the mounting position of the counterweight and the connecting position of the door are arranged so as to be symmetrical.

Therefore, in the above configuration, when the driving roller is rotated to move the traveling body, the door slides up and down in a state in which the door is balanced with the counterweight.

By the way, in the above configuration, the traveling body is composed of two traveling bodies by the first traveling body and the second traveling body, but it may be one traveling body formed in a loop shape. . That is, the lower end of the traveling body is engaged with the drive roller, and the upper end is engaged with the idle roller.

[0013] In the above configuration, the drive roller is disposed on the lower side and the idle roller is disposed on the upper side. Conversely, the drive roller is disposed on the upper side, and the idle roller is disposed on the lower side. A configuration in which they are arranged can also be used. That is, which of the upper and lower driving rollers is to be disposed is selected according to the setting of the space in which the driving unit is installed.

Further, in the above configuration, the door opening / closing device is provided below the closed container. However, according to an embodiment, the door opening / closing device is provided above the closed container. You can also. In this case, an upper end of the door is connected to the other up-down traveling section of the traveling body via the coupling member. Therefore, in this configuration, when the door is at the lowermost position, the opening is closed by the door, and when the door is at the uppermost position, the opening is opened.

According to the above construction, when the door is opened and closed, the door and the counterweight are in a state of being balanced via the traveling body. The door can be opened and closed by force. When the door is opened and closed, even if there is a frictional force that hinders the sliding of the door, the traveling body travels in the sliding direction of the door, and the force that pulls the door in the sliding direction is not sufficient. Working, the door can be reliably opened and closed. In addition, since the traveling body is configured not to bend, it is possible to reliably prevent the door from suddenly dropping during opening and closing, and to greatly improve safety.

By the way, the present invention is mainly applied to a sterilizer and a vacuum cooling device, but can be applied to various devices as long as the device has a closed container having a door which slides in a vertical direction.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. The embodiment shown in FIG. 1 and FIG.
The present invention is applied to a sterilizer.

First, a first embodiment shown in FIG. 1 will be described. In FIG. 1, a sterilization tank as a closed container 1 has a square shape, and has an opening (not shown) on a front surface thereof. The hermetic container 1 includes a vertically slidable door 2 that opens and closes the opening. That is, the door 2 is configured to slide vertically along a pair of guide rails (not shown) provided on both sides thereof. Therefore, when the door 2 is at the uppermost position, the opening is closed by the door 2,
When the door 2 is at the lowermost position, the opening is opened.

An extruding packing (not shown) is provided around the opening, and when the door 2 is in a closed position, the packing is pushed out by pressurized air to thereby open the door 2. To hermetically seal the inside of the sealed container 1. And the door 2
When opening, after releasing the pressurized state of the packing,
The door 2 is slid downward.

The closed container 1 is fixed to a gantry (not shown), and a door opening / closing device 3 is provided below the closed container 1. The door opening and closing device 3 includes one drive roller 4 and two idle rollers 5 and 5,
The drive roller 4 is disposed on the lower side, and the idle rollers 5 are disposed on the upper side. That is, the drive roller 4 is arranged below the door 2 and at a position separated from the lower end of the door 2 by a predetermined distance. An electric motor 6 is connected to the driving roller 4, and the driving roller 4 is rotated by the electric motor 6. On the other hand, each of the idle rollers 5 is
Are rotatably arranged on the left and right sides of the camera.

A traveling body 7 running in the vertical direction is wound around the driving roller 4 and the idle rollers 5. In the first embodiment, the traveling body 7 is constituted by one first traveling body 8 and two second traveling bodies 9 and 9. That is, in the first traveling body 8, one end thereof is connected to the center of the lower surface of the counterweight 10, the other end is connected to the center of the lower end of the door 2, and the middle part engages with the drive roller 4. And the whole is arranged in a U-shape. On the other hand, in each of the second traveling bodies 9, one end thereof is connected to each of the left and right ends of the upper surface of the counterweight 10, and the other end is connected to the left and right ends of the lower end of the door 2 in an L-shape. They are connected to each other via members 11, 11, each intermediate portion is engaged with each of the idle rollers 5, and the whole is arranged in an inverted U-shape.

Therefore, in the traveling body 7, the counterweight 10 is provided on one of the vertical traveling portions,
The lower end of the door 2 is connected to the other vertical traveling part. That is, in the traveling body 7, one of the up and down traveling parts is constituted by the counterweight 10 side portion of the first traveling body 8 and the counterweight 10 side portion of each of the second traveling bodies 9. The other vertical traveling portion is constituted by the door 2 side portion of the first traveling body 8 and the door 2 side portion of each of the second traveling bodies 9.

Here, the counterweight 10 is set to have substantially the same weight as the door 2, and the counterweight 10 and the door 2 are in a state of being balanced via the traveling body 7. In the traveling body 7, the mounting position of the counterweight 10 and the connection position of the door 2 are arranged symmetrically. In the first embodiment, a square tube having a predetermined length is arranged as the counterweight 10 in a horizontal state.

In the first embodiment, a chain is used as the first traveling body 8, and a sprocket is used as the driving roller 4. On the other hand, a wire is used as each of the second traveling bodies 9 for weight reduction and cost reduction, and a guide pulley is used as each of the idle rollers 5.

The operation of the above configuration will be described. First, an operation of opening the door 2 will be described. Now, the door 2 shown in FIG. 1 is at the uppermost closed position, and at this time, the counterweight 10 is at the lowermost position. Therefore, when opening the door 2, the electric motor 6 is driven to slide the door 2 downward. That is, when the driving roller 4 is rotated counterclockwise by the electric motor 6 and the traveling body 7 is driven, the one vertical traveling portion travels upward, and the counterweight 10 rises. At the same time, the other up-down traveling section travels downward, and the door 2 descends.
When the door 2 is lowered to the lowermost open position,
The lower limit switch (not shown) is operated, the electric motor 6 stops, the door 2 stops at the lowermost open position, and the counterweight 10 stops at the uppermost position.

Next, the operation of closing the door 2 will be described. When closing the door 2, the electric motor 6 is driven to slide the door 2 upward. That is, the driving roller 4 is rotated clockwise by the electric motor 6 to drive the traveling body 7. Then, the one vertical traveling part travels downward, the counterweight 10 descends, and the other vertical traveling part travels upward, and the door 2 rises.
Then, when the door 2 rises to the uppermost closed position,
An upper limit switch (not shown) is actuated, the electric motor 6 stops, the door 2 stops at the uppermost closed position, and the counterweight 10 stops at the lowermost position.

Here, the opening and closing of the door 2 is automatically performed in accordance with a preset program by operating a door opening / closing switch (not shown).

Therefore, according to the above configuration, the door 2
When the door 2 is opened and closed, the door 2 and the counterweight 10 are in a state of being balanced via the traveling body 7, so that the door 2 can be opened and closed with a very small driving force. Further, when the door 2 is opened, even when the frictional force between the packing (not shown) and the door 2 is large, the traveling body 7 travels and pulls the door 2 downward. The force acts, and the door 2 can be opened reliably. Moreover, since the traveling body 7 does not bend, it is possible to reliably prevent the door 2 from suddenly dropping during opening and closing, and the safety is remarkably improved.

Next, a second embodiment shown in FIG. 2 will be described. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted. In the second embodiment, the traveling body 7 is constituted by a single chain formed in a loop. That is, a set of the drive roller 4 and the idle roller 5 is provided below the door 2, and the drive roller 4 is disposed on the lower side and the idle roller 5 is disposed on the upper side. 5, the traveling body 7 is wound. Here, sprockets are used as the rollers 4 and 5. The column-shaped counterweight 10 is provided on one of the up-and-down traveling portions of the traveling body 7, and the door 2 is provided on the other up-and-down traveling portion via the L-shaped connecting member 11. Are connected at the lower center.

In the second embodiment, as in the first embodiment, the drive roller 4 is rotated by the electric motor 6 to move the traveling body 7 in the up-down direction. Is vertically slid.

Therefore, according to the structure of the second embodiment, as in the first embodiment, the door 2 can be opened and closed with a very small driving force, and the door 2 can be reliably opened. Can be. Further, it is possible to reliably prevent the door 2 from suddenly dropping during opening and closing, and the safety is remarkably improved. Further, the entire door opening / closing device 3 can be made slim, and the occupied space can be reduced.

[0032]

According to the present invention, the vertically slidable door in the closed container can be opened and closed reliably and safely.

[Brief description of the drawings]

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Closed container 2 Door 3 Door opening / closing device 4 Drive roller 5 Idle roller 7 Traveling object 10 Counterweight

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 2E052 AA00 CA06 DA03 DB03 EA14 EB01 EC01 GA03 GB13 GC01 GC05 GD09 KA15 KA16 3E084 AA05 AA14 AB10 BA02 CA03 DA03 GA10 GB19 GB30 JA20

Claims (1)

[Claims] In a door opening / closing device for a closed container provided with a door that slides in a vertical direction, a driving roller and an idle roller are arranged vertically.
The traveling body 7 traveling vertically is wound around the traveling body 7.
Wherein a counterweight 10 is provided in one of the vertical running sections and the door 2 is connected to the other vertical running section.