JPH1038084A - Door type airtight blocking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To close a washed article carry-in/carry-out port airtight, to simplify structure and to reduce manufacturing cost. SOLUTION: A pair of guide rails 21 is provided by sandwiching a washed article carry-in/carry-out port S1 of a wall part of a liquid tank, and a movable frame 24 is installed on the guide rails 21 free to move. A cover body 34 to close the washed article carry-in/carry-out port S1 is provided on the movable frame 24 free to approach to and separate from the washed article carry-in/ carry-out port S1. Additionally, a cam groove of a vertical hole inclined toward the washed article carry-in/carry-out port S1 is drilled on a pair of driving plates 29 provided in parallel with the guide rails 21 on the movable frame 24. A cam roller 43 provided on the cover body 34 is engaged with the cam groove free to rotate, and a driving cylinder 48 to move the driving plates 29 is provided. The washed article carry-in/carry-out port S1 is firmly closed by making the cover body 34 adhere to the washed article carry-in/carry-out port S1 by moving the cam roller 43 engaged with the cam groove to the side of the washed article carry-in/carry-out port S1 at the time of lowering the driving plates 29 by the driving cylinder 48.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a door-type airtight closing device which is openably and closably mounted at an entry / exit port of an object to be cleaned formed in a cleaning chamber.

[0002]

2. Description of the Related Art FIGS. 7 and 8 show a conventional technique for hermetically closing an entry / exit port of an object to be cleaned in a cleaning chamber provided in a cleaning apparatus.
A brief description will be given based on FIG. In the drawing, reference numeral 1 denotes an airtight door device provided at the entrance S1 of the object to be cleaned of the cleaning apparatus S, and numeral 2 denotes an entrance / exit of the object to be cleaned.
A pair of guide rails fixed to both sides of S1.

[0003] Reference numeral 3 designates an object S1 for carrying in and out the object to be cleaned.
The seal mounting member fixed to the lower side of the seal mounting member 3
Is provided with a lower seal 4 over the entire width of the entry / exit S1 for the object to be washed.

[0004] An upper seal 5 is fixed over the entire width of the entry / exit S1 of the object to be cleaned over the entrance / exit S1 of the object to be cleaned.
The upper part of the upper seal 5 has an inclined surface 5a inclined outward.

[0005] An airtight door 6 is slidably fitted to the pair of guide rails 2, and a door seal 7 is fixed to an upper portion of the airtight door 6. A lower surface of the door seal 7 has an inclined surface 7a that can be engaged with the inclined surface 5a of the upper seal 5.

A bracket 9 is fixed to an upper portion of the cleaning device S, and a door drive cylinder 8 is fixedly supported on the bracket 9. The piston rod 8a of the door drive cylinder 8 is connected to the hermetic door 6 via a knuckle 10.
Note that the reference numeral 11 indicates the connection fitting 11.

[0007] The operation of the conventional hermetic door device configured as described above will be described. First, as shown in FIGS. 7 and 8, the piston rod 8a of the door drive cylinder 8 is shortened, and the hermetic door 6 is open.

[0008] Therefore, the object to be cleaned is carried into a predetermined position in the cleaning room of the cleaning device S from the object to be cleaned entrance / exit S1 by a carrying-in / out device (not shown).

When the object to be cleaned is carried into a predetermined position in the cleaning chamber, the door drive cylinder 8 is operated, the piston rod 8a is extended, and the airtight door 6 is lowered to the position 6 'shown by a virtual line (FIG. 8).

When the hermetic door 6 is lowered, the lower end of the hermetic door 6 comes into close contact with the lower seal 4, and the inclined surface 7a of the door seal 7 comes into close contact with the inclined surface 5a of the upper seal 5. That is, the entry / exit S1 of the object to be cleaned of the cleaning device S is sealed by the airtight door 6.

[0011] When the object S1 is sealed, the cleaning liquid is jetted from a jet nozzle provided in the cleaning chamber in the cleaning chamber of the cleaning device S to clean the object.

At this time, since the object to be cleaned is cleaned in a state where the cleaning chamber is completely sealed, the cleaning liquid during cleaning is prevented from scattering outside the machine and noise generated during cleaning is suppressed. Cleaning is performed under a healthy working environment.

When the cleaning of the object to be cleaned is completed in the cleaning chamber, the door cylinder 8 is operated again to move the piston rod 8a.
Is shortened and the airtight door 6 is raised, and the article S1
Is opened, and the object to be cleaned is taken out of the object S1 through a carry-in / out device (not shown), thereby completing one cleaning cycle.

[0014]

In the above-described hermetic door device of the conventional cleaning apparatus, a jet nozzle is provided in a cleaning chamber, and a cleaning liquid is ejected from the jet nozzle to clean an object to be cleaned. As a result, the airtightness of the cleaning chamber is sufficiently maintained, the cleaning liquid is prevented from being scattered outside during cleaning from the cleaning device, and noise generated during cleaning can be suppressed. Environment provided.

However, the cleaning chamber is formed as a cleaning tank for storing a cleaning liquid, and a side wall of the cleaning tank is provided with an entrance / exit port for the object to be cleaned. The washing liquid is stored in the washing tank, and the washing liquid is ejected from the high-pressure washing nozzle in the washing tank to stir the washing liquid in the washing tank and rotate the washing object. In a cleaning apparatus that performs cleaning while performing cleaning, the cleaning liquid may leak from a sliding portion between the pair of guide rails and the airtight door during cleaning. In such a case, there is a problem that the above-described airtight door device cannot be applied to the cleaning device.

In order to prevent the cleaning liquid from leaking from the sliding portion between the pair of guide rails and the hermetic door, even if a seal is provided on the sliding portion, the tightness of the hermetic door to the seal is weak. During cleaning, due to the water pressure of the cleaning liquid in the cleaning tank,
There was a problem that the cleaning liquid leaked from the seal. In particular, when the airtight door comes into contact with the seal by elevating the airtight door and the seal is worn, the leakage is large. Therefore, there is a problem that it is difficult to apply an airtight door device to such a cleaning tank, as described above.

Of course, it is also conceivable to provide an entry / exit port for the object to be cleaned at the upper part of the cleaning tank, and to carry in / out the object to be cleaned through the entrance / exit port for the object to be cleaned. The device for charging the object to be cleaned becomes large-scale, which causes a problem that the manufacturing cost is increased and the size of the cleaning device is increased.

According to the present invention, for example, high-pressure cleaning liquid is ejected from a high-pressure cleaning nozzle in a cleaning tank storing the above-described cleaning liquid to stir the cleaning liquid stored in the cleaning tank, and to perform cleaning while rotating the object to be cleaned. In the cleaning device that is to be performed,
It is possible to airtightly seal the entry / exit port for the object to be washed, and
It is an object of the present invention to provide a door-type airtight closing device having a simple structure and a low manufacturing cost.

[0019]

According to a first aspect of the present invention, there is provided a door-type airtight closing device for hermetically closing an opening provided in a wall portion of a liquid tank, wherein a pair of guide rails sandwich the opening. A movable frame is movably mounted on the guide rail, and a lid for closing the opening is provided on the movable frame so as to be able to approach and separate from the opening, and the movable frame is provided on the movable frame. A pair of driving plates are provided in parallel with the moving direction, a cam groove having a vertically long hole inclined toward the opening is formed in the driving plate, and a cam roller provided on the lid is rotatably engaged with the cam groove. In this case, a driving plate moving means for moving the driving plate is provided.

As described above, guide rails are provided on both sides of the opening provided in the wall of the liquid tank, and a lid is attached to a movable frame movably mounted on the guide rail, and the lid is provided with the opening. The cam roller provided on the lid body is provided so as to be able to approach and separate from the part, and the cam roller is attached to the movable frame, the cam groove of the oblong vertical hole of the inclined driving plate of the driving plate which moves in parallel with the moving direction of the movable frame. When the drive plate is moved down by the drive plate moving means, the cam roller engaged with the cam groove is moved to the opening side to bring the lid into close contact with the opening and tightly seal the opening.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, which is understood from the description of the first embodiment, as shown in FIG. 1, a pair of guide rails 21 are sandwiched across an inlet / outlet S1 of a cleaning object provided in a wall portion of a liquid tank. The movable frame 24 is movably mounted on the guide rail 21. The movable frame 24 is provided with a lid 34 for closing the entrance / exit S1 of the object to be washed so as to be able to approach / separate from the entrance / exit S1 of the object to be washed. Also, this movable frame is attached to the movable frame 24.
A pair of drive plates 29 are provided in parallel with the movement direction of
A cam groove having a vertically long hole which is inclined toward the article S1 is carried out. A cam roller 43 provided on the lid 34 in this cam groove
Are rotatably engaged, and a drive cylinder 48 for moving the drive plate 29 is provided.

[0022]

Next, an embodiment of a door type airtight closing device according to the present invention will be described with reference to FIGS. In this embodiment, a door-type airtight closing device is used for a cleaning device. In the figure, what is indicated by reference numeral 20 is a door-type airtight closing device main body for airtightly closing an object S1 to be cleaned, which is an opening provided in a cleaning tank wall of the cleaning device S.

Further, a base 22 extending upward is fixed to both sides of the object-to-be-cleaned entrance S1 across the object-to-be-cleaned entrance S1 of the cleaning device S. The base 22 has a pair of guide rails.
21 is fixedly supported. The escape groove 23 is provided at a position corresponding to the narrow portion of the restraining plate 47 fixed to the lid 34, when the lid 34 to be described later closes the entry / exit S1 of the article to be cleaned, that is, the lid 34 to be described later closes the proper position of the guide rails 21. Is formed.

The door-type hermetic closing device main body 20 has a structure shown in FIG.
As shown in FIG. 7, a movable frame 24 is provided. The movable frame 24 includes a pair of vertical support plates 25 provided on the left and right.
And a pair of lateral connecting shafts 27 connecting the pair of support plates 25 to each other. This pair of support plates 25
A depressed groove 26 (see FIGS. 2 and 4) is formed at an appropriate position in the center of the optical disc.

At the upper and lower positions of the pair of support plates 25 provided on the left and right, two pairs of slide members 28, 28 having a substantially U-shaped cross section so as to be orthogonal to the surface of the support plate 25, are fixed. Supported. The sliding members 28 are slidably fitted to the pair of guide rails 21, respectively, as shown in FIGS. Therefore, the movable frame 24 is provided so that the pair of guide rails 21 can be moved vertically.

A pair of drive plates 29 are provided on the connection shaft 27 of the movable frame 24 in parallel with the support plate 25. As shown in FIG. 5, a pair of vertically long holes 30 extending in the up-down direction are formed in the upper and lower portions of the drive plate 29. These vertical holes 30
The driving plate 29 is provided in parallel with the moving direction of the movable frame 24.

The connection hole 27 of the movable frame 24 is
Is inserted. Rollers 31 are rotatably mounted on the engagement portions of the connection shaft 27 with the vertically elongated holes 30, respectively. The roller 31 is loosely fitted in the vertically long hole 30. Therefore, the pair of left and right driving plates 29 are mounted on the movable frame 24 via the pair of upper and lower slots 30 respectively.

Further, vertically long holes 30 provided above and below the driving plate 29 are provided.
A cam groove 32 inclined from the front to the rear, that is, as shown in FIG. A drive bracket 33 for connecting the pair of drive plates 29 is fixed to a lower end portion of the drive plate 29.

The movable frame 24 is provided with a pair of driven plates 35 adjacent to the pair of driving plates 29. As shown in FIG. 6, the driven plate 35 has a vertically long hole 30 formed in the drive plate 29.
A pair of horizontally long holes 36 are formed in a direction perpendicular to the horizontal direction. A pair of connecting shafts 27 of the movable frame 24 are inserted into these horizontally long holes 36, and a roller is provided in an engagement portion of the connecting shaft 27 with the horizontally long holes 36.
The rollers 37 are rotatably mounted, and the rollers 37 are loosely fitted in the horizontally long holes 36.

The pair of driven plates 35 are L-shaped,
Its base end is fixed to the lid 34. The lid 34 closes the object S1 of the cleaning device S, and is provided so as to be able to approach and move away from the object S1.

Further, a guide groove 38 parallel to the horizontal hole 36 is formed at an intermediate portion between the horizontal holes 36 provided above and below the driven plate 35, respectively. Guide groove 38 is drive plate
It is provided at a position corresponding to the cam groove 32 formed in the 29. A horizontally long hole 39 parallel to the pair of horizontally long holes 36 is formed at an appropriate position of the guide groove 38.

As shown in FIGS. 3 and 4, an adjusting plate 40 having a substantially L-shaped cross section is fitted in the guide groove 38 formed in the driven plate 35 so that the base end thereof is slidably fitted. I have.
A through hole 41 is formed at an appropriate position at the base end of the adjustment plate 40, and a screw hole 42 is formed at a bent portion at the top.

As shown in FIGS. 4 and 5, a cam roller (cam follower) 43 is engaged with a cam groove 32 formed in the pair of driving plates 29. The shaft of the cam roller 43 is shown in FIG.
As shown in FIG. 7, the nut is inserted into the through hole 41 of the adjustment plate 40 and the horizontally long hole 39 of the driven plate 35, and the nut is attached to the driven plate 35.

Screw holes in the bent portion of the adjustment plate 40
An adjustment bolt 45 is screwed into 42, and the tip of the adjustment bolt 45 contacts the top of the driven plate 35 to adjust the position of the cam roller 43. In addition, what is indicated by reference numeral 46 is a lock nut.

As shown in FIG. 1, a pair of restraining plates 47 are fixed to the lid 34. The suppression plate 47 is attached at a position corresponding to the suppression groove 26 formed in the support plate 25. The restraining plate 47 includes a wide portion and a narrow portion, and the narrow portion is formed to be narrower than the width of the escape groove 23 formed in the pair of guide rails 21, and the leading end portion is substantially L-shaped. I have. The restraining plate 47 is bent toward the guide rail 21 in a substantially L-shape by inserting the narrow portion into the restraining groove 26 formed in the supporting plate 25 so that the shoulder portion of the wide portion can engage with the support plate 25. The distal end extends to the vicinity of the guide rail 21.

Accordingly, when an unexpected force is applied to the lid 34 when the lid 34 moves, the shoulder of the wide portion engages with the support plate 25, and In addition to suppressing the run-out, the tip of the cleaning device S
Suppress to the side.

Further, a driving cylinder 48 as a driving plate moving means is fixed to the cleaning device S. The piston rod 48 'of the drive cylinder 48 is connected to a drive bracket 33 that connects the pair of drive plates 29.

As shown in FIGS. 1 and 2, a pair of stoppers 49 is provided at the lower ends of the pair of guide rails 21 as means for suppressing the amount of movement of the movable frame 24. The stopper 49 is provided so as to be adjustable on the bracket 50 fixed to the cleaning device S and to be in contact with the support plate 25.

Further, the object S1 for carrying in and out the object to be cleaned of the cleaning device S.
Is provided with an annular seal member 51 so as to surround the article entrance S1. The annular seal member 51 is fixed to an annular base 52 (see FIG. 2) fixed to the cleaning device S.

Next, the operation of the present embodiment will be described.
The door-type airtight closing device main body 20 of the present embodiment is shown in FIGS.
As shown in the figure, the original position, that is, the lid 34 is in an open state. Then, when the drive cylinder 48 is operated to extend the piston rod 48 ', the movable frame 24 moves downward together with the pair of drive plates 29 via the drive bracket 33.

At this time, the movable frame 24 moves downward while the pair of sliding members 28, 28 are guided by the guide rail 21 and slides on the guide rail 21 by its own weight.
Further, the lid 34 and the driven plate 35 also move downward together with the movable frame 24 by its own weight.

Thus, the driving plate 29 and the movable frame 2
4, when the lid 34 and the driven plate 35 move downward, the support plate 25 of the movable frame 24 contacts the stopper 49, and the movable frame
24 stops at that position.

Thus, the connecting shaft 27 of the movable frame 24 is
Since it is inserted through the horizontally long hole 36 of the driven plate 35, the driven plate 35 and the lid 34 provided integrally with the driven plate 35 also stop at that position.
That is, the lid 34 is stopped at the position where the object S1 of the cleaning device S can be closed. At this time, the narrow portion of the suppression plate 47 fixed to the lid 34 is located at a position corresponding to the escape groove 23 formed on the pair of guide rails 21.

Even if the movable frame 24, the driven plate 35, and the lid 34 stop at predetermined positions, the piston rod of the drive cylinder 48
The drive plate 29 moves downward together with the piston rod 48 ′ until the upper portion of the inner periphery of the elongated hole 30 of the drive plate 29 comes into contact with the connection shaft 27 of the movable frame 24, because 48 ′ further extends.

On the other hand, when the driving plate 29 moves downward, the cam roller 43 mounted on the driven plate 35
The lid 34 fixed to the driven plate 35 moves in the direction of the object S1 provided in the cleaning tank wall of the cleaning device S, and the lid 34 is suppressed. The narrow portion of the plate 47 passes through the escape groove 23 of the pair of guide rails 21,
The lid body 34 presses the annular seal member 51 mounted on the annular base 52, and hermetically closes the article S1 to be cleaned and transferred.

In this embodiment, an annular sealing member is used.
51 is mounted on the annular base 52, but the lid 34
Alternatively, an annular seal member 51 surrounding the article to be washed in / out S1 may be attached.

When the article carrying-in / out port S1 is airtightly closed by the lid 34, a predetermined washing cycle of the washing apparatus S, that is, a washing cycle such as water supply, washing, drainage, and drying is performed.
When the predetermined cleaning cycle of the cleaning device S is completed, the drive cylinder 48 is operated, and the piston rod 48 'of the drive cylinder 48 is shortened, and the cover 34 is turned in the reverse order of the closing means described above. The blockage of the entry / exit S1 for the article to be washed is released, and the article is returned to the original position.

[0048]

According to the first aspect of the present invention, the carry-in / out port provided on the side wall of the cleaning tank is sealed, the cleaning liquid is stored, and the high-pressure cleaning liquid is jetted from the high-pressure cleaning nozzle in the cleaning tank. In the cleaning apparatus in which the cleaning liquid is stirred to perform cleaning, the seal at the entrance and exit of the object to be cleaned is tightly adhered to the lid by the combination of the cam groove and the cam roller. Therefore, leakage of the cleaning liquid can be prevented.

An object to be cleaned is provided at the side of the cleaning tank,
The object to be cleaned is carried in / out from the object entrance / exit, and furthermore, the movement and closing operation of the lid are performed by one drive source, so that the structure becomes simple and the manufacturing cost is reduced. In addition, maintenance costs can be reduced.

When the lid is moved, the sealing member surrounding the opening is prevented from coming into contact with the sealing member. When the lid is closed, the lid is pressed against the sealing member to close the opening. To prevent damage due to wear and the like of the seal member, so that the life of the seal member can be extended for a considerably long time, consumable parts can be reduced, and maintenance work such as replacement of the seal member is also reduced. There are effects such as being able to.

[Brief description of the drawings]

FIG. 1 is a front view of a door type airtight closing device main body according to the present invention.

FIG. 2 is a left side view of the one in FIG.

FIG. 3 is a plan view of the one in FIG.

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 1;

FIG. 5 is an enlarged side view of the driving plate of FIG. 1;

FIG. 6 is an enlarged side view of the driven plate of FIG. 1;

FIG. 7 is a front view of a conventional door-type airtight closing device.

FIG. 8 is a sectional view taken along line BB of FIG. 7;

[Explanation of symbols]

 S1 Object to be washed in / out 21 Guide rail 24 Movable frame 34 Lid 29 Drive plate 32 Cam groove 43 Cam roller 48 Drive cylinder

Claims (1)

[Claims] 1. A door-type hermetic closing device for hermetically closing an opening provided in a wall of a liquid tank, wherein a pair of guide rails is provided so as to sandwich the opening, and a movable frame is movable on the guide rail. Attached, a lid closing the opening in the movable frame is provided so as to be able to approach and separate from the opening, and a pair of driving plates are provided in the movable frame in parallel with the moving direction of the movable frame,
A drive plate movement for forming a vertically long cam groove inclined toward the opening in the drive plate, rotatably engaging a cam roller provided on the lid with the cam groove, and moving the drive plate. A door-type airtight closing device characterized by comprising means.