JPH07127357A - Airtight door device - Google Patents

Abstract

PURPOSE:To keep a gateway, through which articles to be washed are carried in and out, airtight and to simplify the structure while reducing the production cost for a washing apparatus that washes the articles to be washed by agitating washing liquid stored in a washing tank and by turning the articles. CONSTITUTION:A U-shaped sealing substrate 23 having a sealing member 25 is fixed, with its opening side facing upward and its sealing member 25 facing a washing tank S11 side, to the washing tank so that it surrounds a gateway S12 through which articles to be washed are carried in and out and which is provided to the wall of the washing tank S11. Guide rails 26 are provided to the gateway S12 side of the washing tank S11 and three pairs of pressing cams 27 are provided to the lower parts of the guide rails 26 and an airtight door 30 is provided between the sealing substrate 23 and the washing tank S11. Guide members 31 for engaging with the guide rails 26 and the pressing cams 27 are mounted to the airtight door 30 and a lifting cylinder 34 is connected to the air tight door 30. Pressing cam-turning devices 42 that press airtight door 30 to the sealing substrate 25 for closing the gateway S12 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a confidential door device which is openably and closably provided at an inlet / outlet port of an object to be loaded / unloaded into / from a cleaning chamber of a cleaning device.

[0002]

2. Description of the Related Art A conventional secret door device will be described with reference to FIGS. In the figure, reference numeral 1 is a main body of a secret door device provided at the cleaning object loading / unloading port S1 of the cleaning device S, and reference numeral 2 is fixed to both sides of the cleaning object loading / unloading port S1 of the cleaning device S. It is a pair of guide rails.

Reference numeral 3 denotes a seal mounting member fixed to the lower side of the cleaning object carrying-in / out port S1 of the cleaning apparatus S, and reference numeral 4 denotes a cleaning mounting / discharging port of the seal mounting member 3.
This is the bottom seal installed over the entire width of S1.

Reference numeral 5 denotes an upper seal fixed to the upper side of the object inlet / outlet S1 of the cleaning device S over the entire width of the object inlet / outlet S1 to be cleaned. The upper seal 5 is inclined outward. The inclined surface 5a is formed.

Reference numeral 6 indicates a pair of guide rails 2.
It is a confidential door slidably fitted in. Further, the reference numeral 7 is a door seal fixed to the upper portion of the confidential door 6,
An inclined surface 7a capable of engaging with the inclined surface 5a of the upper seal 5 is formed at the lower portion of the door seal 7.

Reference numeral 8 denotes a door cylinder fixedly supported by a bracket 9 fixed to the upper portion of the cleaning device S.
The piston rod 8a of the door cylinder 8 is connected via a knuckle 10 to a connecting fitting 11 fixed to the confidential door 6.

The operation of the conventional confidential door device thus configured will be described. 8 and 9, the piston rod 8a of the door cylinder 8 is shortened and the confidential door 6 is open. Therefore, the object to be cleaned is carried into the predetermined position of the cleaning chamber of the cleaning apparatus S from the object to be cleaned inlet / outlet S1 by a carry-in / carry-out device (not shown).

When the object to be cleaned is carried into a predetermined position in the cleaning chamber of the cleaning device S, the door cylinder 8 is operated and the piston rod 8a is extended to slide the confidential door 6 to the position 6'shown by the phantom line. It is moved and lowered (see FIG. 9).

When the confidential door 6 is lowered to the position 6'shown by the phantom line, the lower end of the confidential 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. To engage. That is, the cleaning object carry-in / out port S1 of the cleaning device S is sealed by the confidential door 6.

When the object inlet / outlet S1 of the cleaning device S is sealed by the confidential door 6, the cleaning liquid is jetted from the jet nozzle provided in the cleaning chamber in the cleaning chamber of the cleaning device S to clean the object to be cleaned. To do.

At this time, since the cleaning object is cleaned while the cleaning chamber is completely sealed, the cleaning liquid is prevented from splashing out of the machine during the cleaning and the noise generated during the cleaning is suppressed. The cleaning work is performed under a sound work environment.

When the cleaning of the object to be cleaned is completed in the cleaning chamber, the door cylinder 8 is actuated again to shorten the piston rod 8a and raise the confidential door 6 to the open state. Is taken out of the article carrying-in / out port S1 and one cleaning cycle is completed.

[0013]

The confidential door device of the conventional cleaning device described above has the jet nozzle disposed in the cleaning chamber, and the cleaning liquid is ejected from the jet nozzle to clean the object to be cleaned. As a result, the airtightness of the inside of the washing room is sufficiently maintained, the washing liquid being washed from the washing device is prevented from splashing to the outside, and the noise generated during washing can be suppressed. Can be provided.

However, the cleaning chamber is formed in a cleaning tank for storing the cleaning liquid, the side wall of the cleaning tank is provided with an inlet / outlet for the object to be cleaned, and the inlet / outlet port for the object to be cleaned is used to transfer the object to be cleaned to a predetermined inside of the cleaning tank. To the position, the inlet / outlet of the object to be cleaned is hermetically sealed, the cleaning liquid is stored, and the high-pressure cleaning liquid is ejected from the high-pressure cleaning nozzle in this cleaning tank to stir the cleaning liquid in the cleaning tank and rotate the object to be cleaned. In the cleaning device configured to perform the cleaning while the cleaning is performed, there is a problem that the cleaning liquid leaks from the sliding portion between the pair of guide rails and the confidential door during the cleaning. Therefore, in such a cleaning device, there is a problem that the above-mentioned confidential door device cannot be applied.

Further, in order to prevent the cleaning liquid from leaking from the sliding portion between the pair of guide rails and the confidential door, even if the sliding portion is provided with a seal, the adhesion to the seal of the confidential door is weak. At the time of cleaning, there is a problem that the cleaning liquid leaks from the seal portion due to the water pressure of the cleaning liquid in the cleaning tank. In particular, when the confidential door and the seal contact with each other due to the elevation of the confidential door and the seal is worn, the leakage is large. Therefore, there is a problem that it is difficult to apply the above-mentioned confidential door device to such a cleaning tank.

Of course, it is conceivable to provide an inlet / outlet port for the object to be cleaned at the upper part of the cleaning tank, and load / unload the object to be cleaned from the port for transferring the object to be cleaned. The item to be cleaned introduction device becomes large-scale,
There is a problem that the manufacturing cost becomes high and the cleaning device becomes large in size.

In the present invention, for example, the high-pressure cleaning liquid is jetted from the high-pressure cleaning nozzle in the cleaning tank storing the cleaning liquid as described above, the cleaning liquid stored in the cleaning tank is stirred, and the object to be cleaned is cleaned while rotating. In the cleaning device that was designed to do
The loading / unloading port for the item to be cleaned can be hermetically sealed, and
An object of the present invention is to provide a confidential door device which has a simple structure and is inexpensive to manufacture.

[0018]

Means for Solving the Problems As a means for solving the above problems, the present invention provides a confidential door device for secretly closing an opening provided in a wall of a liquid tank, wherein the opening is provided in the opening. A substantially U-shaped seal substrate around which a seal member is mounted so that the opening side thereof faces upward and the seal member faces the liquid tank, and a predetermined distance from the liquid tank. Open and fix the cover secretly, and fix a pair of guide rails on both sides of the opening of the seal substrate of the liquid tank, and a plurality of pairs of guide rails coaxially with the guide rails at the lower part on the axis of the pair of guide rails. A pressure cam is rotatably disposed, and a confidential door is vertically movable between the seal substrate and the liquid tank, and the confidential door is engaged with the pair of guide rails and the plurality of pairs of pressure cams. A pair of guide members having mating guide grooves When the confidential door is mounted, an elevating means for raising and lowering the confidential door is connected, and when the confidential door descends, the pressing cams of the plurality of pairs are rotated, and the pair of guide members are operated by the pressing cams of the plurality of pairs. It is characterized in that a pressure cam rotating means for pressing the confidential door against the substantially U-shaped seal substrate through the seal and sealingly closing the opening of the liquid tank is provided.

[0019]

Since the present invention is constructed as described above,
When the object to be cleaned is carried into the liquid tank through the opening provided in the wall of the liquid tank and positioned, the cylinder for moving the confidential door up and down operates to lower the confidential door.

At this time, since the guide door of the confidential door is engaged with the pair of guide rails fixed to both sides of the opening of the pair of guide members attached to the confidential door, the confidential door has a pair of guides. Guided by the rail, it descends.

When descending, the pair of guide members are separated from the pair of guide rails and engage with the plurality of pairs of pressing cams arranged on the lower portion of the guide rails on the axis thereof, so that the confidential door is guided by the pressing cams. To reach the falling edge.

When the confidential door reaches the lower end, the pair of pressing cam rotating cylinders actuate to rotate the plurality of pairs of pressing cams.

When the plural pairs of pressing cams rotate, the plural pairs of pressing cams press the side walls of the guide grooves of the pair of guide members so that the confidential door moves toward the seal substrate. As a result, the confidential door presses the seal member mounted on the seal substrate and strongly adheres to the seal substrate.

That is, the confidential door secretly closes the opening while being locked by the plural pairs of pressing cams.

When the airtight door hermetically closes the opening of the liquid tank, the cleaning liquid is injected to a predetermined level in the liquid tank, a predetermined cleaning cycle is performed, and the object to be cleaned is cleaned.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral S10 indicates a cleaning device, and reference numeral S11 indicates a cleaning device S1.
It is a cleaning tank installed at 0.

Further, reference numeral S12 indicates a cleaning tank S11.
It is an inlet / outlet port for the object to be cleaned, which is an opening provided on the side surface of the wall of the cleaning tank S11 at a position below the surface of the cleaning liquid S13 stored therein.

The reference numeral 20 designates a cleaning object carrying-in / out port S12.
It is the main body of the confidential door device provided in. Further, the reference numeral 21 extends above the surface of the cleaning liquid S13 stored in the cleaning tank S11, and is a pair of bases fixedly secured to the side surfaces of the cleaning tank S11 so as to be located on both sides of the article carrying-in / out port S12. In the lower part between the pair of bases 21, the substrate 22 has an inlet / outlet port for the article to be cleaned.
It is secured to the bottom position of S12.

That is, the pair of bases 21 and the substrate 22 are to be cleaned so that the upper portions thereof extend above the liquid surface of the cleaning liquid S13 stored in the cleaning tank S11, and the upper portions thereof have an open U-shape. The article carry-in / out port S12 is surrounded and fixed to the side surface of the cleaning tank S11 in a secret manner.

The reference numeral 23 designates a pair of bases 21 and the substrate 22 which are fixed to each other so as to project from the edge of the article carrying-in / out port S12 to be cleaned, and which are substantially U-shaped seal substrates having an open top. A seal groove 24 is formed over the entire length of the seal substrate 23 inside the protruding portion of the seal substrate 23, that is, on the cleaning tank S11 side (see FIG. 7).

A reference numeral 25 indicates a seal member, and the seal member 25 is inserted into the seal groove 24 so that a part thereof protrudes.

Therefore, the substantially U-shaped seal substrate 23
, A seal member 25 is mounted over the entire length of the seal substrate 23, and the object to be cleaned carry-in / out port S12 of the cleaning tank S11 is surrounded by the U-shaped seal board 23. The opening side extends above the liquid surface of the cleaning liquid S13 stored in the cleaning tank S11, and the sealing member 25 is secured to the cleaning tank S11 at a predetermined interval so that the sealing member 25 is on the cleaning tank S11 side.

Reference numeral 26 is a pair of upwardly extending guide rails fixed to the upper portions of the pair of bases 21.
The reference numeral 27 denotes a pressing cam which is rotatably arranged below the pair of guide rails 26 on the axis thereof so as to be coaxial with the guide rails.

The pressing cam 27 is fixed to the tip of a support shaft 28 rotatably supported by a holder 29 fixed to the pair of bases 21. In this embodiment, three pairs of pressing cams 27 are provided.

Reference numeral 30 indicates a substantially U-shaped seal substrate
It is a confidential door that can be raised and lowered between 23 and the washing tank S11.
The reference numeral 31 is a bracket 32 fixed to the confidential door 30.
And a pair of guide members that are fixedly supported by.

A guide groove 31a is formed on the pair of guide members 31 so that the pair of guide rails 26 and the three pairs of pressing cams 27 can be engaged with each other.
Is formed, and the pair of guide members 31 is a secret door.
When descending 30, that is, when closing the object inlet / outlet S12 to be cleaned, the confidential door is separated from the pair of guide rails 26.
It sticks to 30.

Therefore, the confidential door 30 includes the pair of guide rails 26 fixed to the cleaning tank S11 and the three pairs of pressing cams 27.
It is guided and moved up and down by a pair of guide members 31 having guide grooves 31a engaging with.

Reference numeral 33 indicates a connecting fitting fixed to a proper position of the confidential door 30, and the connecting fitting 33 has a connecting groove 33a (see FIG. 4). Reference numeral 34 indicates a cleaning device S1
It is a door lifting cylinder that is a lifting means for the confidential door 30 fixed to 0.

Piston rod 34a of door lifting cylinder 34
A knuckle 35 having a narrow portion 35a is fixed to the knuckle 35. The knuckle 35 is connected to the connecting fitting 33 so that the narrow portion 35a is slidably fitted in the connecting groove 33a (see FIG. 4) of the connecting fitting 33. ing. Therefore, the confidential door 30 is supported by the door lift cylinder 34 so as to be able to move toward and away from the seal substrate 23.

A reference numeral 36 denotes a seal fitting fixedly secured to the upper portion between the pair of bases 21. The seal fitting 36 is a seal mounting plate 37, which will be described later, fixed to the security door 30 when the security door 30 descends. Also works as a stopper for the confidential door 30. A seal member 38 is attached to the lower surface of the seal mounting plate 37 fixed to the top of the confidential door 30 (see FIG. 5).

The seal member 38 has a seal portion which is far away from the liquid surface of the cleaning liquid S13 stored in the cleaning tank S11, and the cleaning liquid S13 may be scattered from the seal portion during cleaning. If not, you don't have to wear it.

Reference numeral 39 denotes a link fixed to the base of the support shaft 28. The link 39 has a pair of drive shafts 41 and hinge pins 40 in which the arms of the link 39 are arranged on both sides of the confidential door 30.
It is rotatably connected by.

Reference numeral 42 denotes a pair of pressing cam rotating cylinders rotatably supported by a hinge pin 44 on a bracket 43 fixed to the cleaning device S10. The piston rod 42a of the pair of pressing cam rotating cylinders 42 has a knuckle. A hinge pin 46 is rotatably connected to the pair of drive shafts 41 via 45.

Next, the operation of this embodiment will be described. First,
It is assumed that all the devices of the confidential door device body 1 are in the original position. That is, in the confidential door 30, the piston cylinder 34a of the door raising / lowering cylinder 34 is shortened, and the confidential door 30 is raised as shown by the phantom line 30 'in FIG.

Further, the piston rod 42a of the pair of pressing cam rotating cylinders 42 is shortened, and the arm portion of the link 39 is shown in FIG.
To a position indicated by an imaginary line 39 ′, and three pairs of pressing cams 27
Is rotated to a position indicated by an imaginary line 27 'in FIG. 6 and one side wall of the guide groove 31a of the pair of guide members 31 (the guide groove 31a in FIG. 2).
Of the seal substrate 23 side of FIG.
As shown by, it is separated from the seal substrate 23.

In addition, the article inlet / outlet S12 of the cleaning tank S11 provided in the cleaning apparatus S10 is opened, and the cleaning liquid S13 in the cleaning tank S11 is discharged.

In this state, the article carry-in / out port S12
When the object to be cleaned is loaded from the cleaning tank S11 to a predetermined position in the cleaning tank S11 and positioned, the door lifting cylinder 34 operates to extend the piston rod 34a and extend the seal mounting plate of the confidential door 30.
The confidential door 30 is lowered until 37 comes into contact with the seal fitting 36.

At this time, the confidential door 30 has the guide grooves 31a of the pair of guide members 31 attached to the confidential door 30, which are engaged with the pair of guide rails 26 and the three pairs of pressing cams 27. 30 is guided by a pair of guide rails 26 and three pairs of pressing cams 27 and descends, and a seal mounting plate 37 of the confidential door 30 is provided.
When the sheet metal comes into contact with the seal fitting 36, the upper portion of the article inlet / outlet port S12 of the cleaning tank S11 is sealed by the seal member 38 in a confidential manner.

The pair of guide members 31 is a pair of guide rails.
26, it is disengaged from 26, engages only with three pairs of pressing cams 27, the confidential door 30 reaches the descending end, and the cleaning object carry-in / out port of the cleaning tank S11 is reached.
Reach a position that allows S12 to be occluded.

When the confidential door 30 reaches the lower end, the pair of pressing cam rotating cylinders 42 are actuated to move the piston rod 42a.
Is extended, the pair of drive shafts 41 is moved downward, and the arm portion of the link 39 is rotated downward.

When the arm portion of the link 39 rotates downward,
Along with that, the support shaft 28 rotates, and the three pairs of pressing cams 27 rotate.

When the three pairs of pressing cams 27 rotate, the three pairs of pressing cams 27 have the other side wall of the guide groove 31a of the pair of guide members 31 (the wall opposite to the seal substrate 23 side of the guide groove 31a of FIG. 2).
Press.

When the other side wall of the guide groove 31a of the pair of guide members 31 is pressed toward the seal substrate 23 side, the confidential door 30 presses the seal member 25 mounted on the seal substrate 23 to adhere to the seal substrate 23. To do.

That is, the confidential door apparatus main body 1 is in the state shown in FIG. 1, and the confidential door 30 is locked by the three pairs of pressing cams 27 to secretly close the article inlet / outlet S12 of the cleaning tank S11. .

When the confidential door 30 confidentially closes the object inlet / outlet S12 of the cleaning tank S11, the cleaning liquid S13 is injected to a predetermined level in the cleaning tank S11 and a predetermined cleaning cycle is performed to clean the object to be cleaned. Cleaning is performed.

When the cleaning of the object to be cleaned in the cleaning tank S11 is completed, the cleaning liquid S13 in the cleaning tank S11 is discharged, and all the devices of the confidential door device body 1 are operated in the reverse order to the original position. Return to.

When all the devices of the main body 1 of the confidential door are returned to their original positions, the cleaning object carry-in / out port S12 of the cleaning tank S11 is opened, so that the cleaning object after cleaning is taken out from the cleaning tank S11 and is cleaned once. The cycle ends.

[0058]

As described above, according to the present invention, the confidential door is provided in parallel with the cleaning tank so as to be movable up and down, and the confidential door is pressed against the seal member from the side on which the liquid pressure is applied to the object to be cleaned in the cleaning tank. Since the entrance / exit is closed confidentially, and when the confidential door is raised / lowered, the confidential door is raised / lowered without coming into contact with the seal member so that the wear of the seal member is almost avoided. The inlet / outlet port for the object to be cleaned of the cleaning tank can be efficiently and confidentially closed, and the leakage of the cleaning liquid can be eliminated.

Further, since the friction of the seal member is avoided,
The life of the sealing member can be extended considerably. Moreover, the difficult replacement work of the seal member is almost eliminated, and the maintenance work can be facilitated. Further, since the structure is simple, the manufacturing cost of the confidential door device can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a confidential door device according to the present invention.

FIG. 2 is a plan view of that of FIG.

FIG. 3 is a side view of a pressing cam rotation mechanism.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is an enlarged explanatory view showing the engagement between the pressing cam and the guide member.

FIG. 7 is an enlarged explanatory view of a portion D of FIG. 2 showing a confidentiality blocking portion of the confidential door.

FIG. 8 is a front view of a conventional confidential door device.

9 is a sectional view taken along the line CC of FIG.

[Explanation of symbols]

 23 Seal board 25 Seal member 26 Guide rail 27 Pressing cam 30 Confidential door 31 Guide member 31a Guide groove 34 Door lifting cylinder 42 Pushing cam rotating cylinder

Claims (1)

[Claims] 1. A secret door device for secretly closing an opening provided in a wall portion of a liquid tank, wherein a substantially U-shaped seal substrate having a seal member attached to the opening surrounds the opening. An opening of the sealing substrate of the liquid tank, with the opening side facing upward and the sealing member being on the liquid tank side, with a predetermined distance from the liquid tank to be fixed to a secret. A pair of guide rails are fixed to the side, and a plurality of pairs of pressing cams are rotatably arranged coaxially with the guide rails below the pair of guide rails, and between the seal substrate and the liquid tank. And a pair of guide members having guide grooves engageable with the pair of guide rails and the plurality of pairs of pressing cams are attached to the confidential door, and the confidential door is attached to the confidential door. By connecting the lifting means for lifting the confidential door, When the tight door is lowered, the plurality of pairs of pressing cams are rotated, and the plurality of pairs of pressing cams press the confidential door against the substantially U-shaped seal substrate through the pair of guide members, A confidential door device comprising a pressing cam rotating means for sealingly closing the opening of the liquid tank.