JP2018061934A - One-tank type vacuum cleaning drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a one-tank type vacuum cleaning drier capable of performing putting-in/taking-out or the like of a workpiece simply by using a simple mechanism without requiring a large installation space.SOLUTION: In a one-tank type vacuum cleaning drier 1 for performing vacuum cleaning using volatile non-aqueous solvent as cleaning solvent, vacuum steam cleaning using solvent vapor, and vacuum dehydration, to a workpiece input into a vacuum cleaning dehydration tank 4, a carrying-in/carrying-out port 28 for putting-in/taking-out the workpiece therethrough into/from the vacuum cleaning dehydration tank 4 from a lateral direction is formed on the vacuum cleaning dehydration tank 4, and an outer door 29 for opening/closing the carrying-in/carrying-out port 28 is attached to the carrying-in/carrying-out port 28.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a single tank vacuum cleaning dryer used for cleaning various workpieces such as electronic parts and metal parts using a non-aqueous volatile solvent such as a hydrocarbon solvent.

  As this type of one tank type vacuum cleaning dryer, a cleaning device described in Patent Document 1 is known. The cleaning apparatus disclosed in Patent Document 1 includes a vacuum cleaning / drying tank, a cleaning liquid storage tank, a steam generation tank that generates cleaning steam, a recovery tank that introduces and recovers cleaning steam into the liquid, and a vacuum pump. In a single vacuum cleaning / drying tank, the workpiece is subjected to cleaning and drying.

  In the 1 tank type vacuum cleaning dryer, the lid that seals the top (top) opening is opened, and the basket on which the workpiece is mounted is put into the vacuum cleaning drying tank from above the vacuum cleaning drying tank. . After the work is put in, the lid is closed, the vacuum cleaning / drying tank is decompressed by the vacuum pump, and the cleaning liquid in the storage tank is introduced into the vacuum cleaning / drying tank. Ultrasonic cleaning (coarse cleaning) is performed in a vacuum cleaning / drying tank with the workpiece immersed in a cleaning solution. Next, after returning the vacuum cleaning / drying tank to the atmospheric pressure state and returning the internal cleaning liquid to the storage tank by its own weight, the vacuum cleaning / drying tank is again depressurized and the cleaning steam is transferred from the steam generation tank to the vacuum cleaning / drying tank. Introduce and clean the workpiece with steam (finish cleaning). Next, after the cleaning steam is discharged from the vacuum cleaning / drying tank, the vacuum cleaning / drying tank is decompressed by a vacuum pump to vaporize the cleaning liquid adhering to the work, thereby vacuum drying the work. The cleaning vapor sucked by the vacuum pump from the vacuum cleaning / drying tank is recovered in the recovery tank. After the work is dried, the lid of the vacuum cleaning / drying tank is opened, and the basket in the vacuum cleaning / drying tank is pulled upward to take out the basket on which the work after the cleaning / drying is mounted from the vacuum cleaning / drying tank.

Japanese Patent No. 3598287

  In the conventional one-tank vacuum cleaning / drying machine, when the work is charged, the top surface of the vacuum cleaning / drying tank is opened, and the bucket is charged into the vacuum cleaning / drying tank from above the vacuum cleaning / drying tank. Also in taking out the workpiece, the top surface of the vacuum cleaning / drying tank is opened, and the basket is taken out from the inside of the vacuum cleaning / drying tank through the top surface opening. It is difficult to manually lift the basket above the vacuum cleaning / drying tank and put it in the vacuum cleaning / drying tank. Similarly, it is difficult to manually lift the basket from the bottom of the vacuum cleaning / drying tank to above the top surface opening and take out the basket from the vacuum cleaning / drying tank.

  For this reason, in order to put a basket into a vacuum cleaning / drying tank and to remove it from the single tank vacuum cleaning / drying machine, it is generally necessary to attach a pick-and-place unit. Even if the single-vacuum vacuum washer / dryer itself has a compact configuration, the installation space required becomes large when including a basket loading / unloading mechanism. Further, the pick and place unit is more expensive than, for example, a free roller conveyor. In addition, maintenance and inspection work in the vacuum cleaning / drying tank must be performed with the top surface of the vacuum cleaning / drying tank opened, and workability is improved when the top of the vacuum cleaning / drying tank is at a high position. There is also the problem of being bad.

  In the single tank type vacuum cleaning / drying machine, it is conceivable to employ shower cleaning or jet cleaning that requires a small amount of cleaning agent instead of immersion cleaning as a cleaning mode. It is desirable that the piping and nozzles for this purpose be arranged so that the cleaning liquid can be appropriately sprayed onto the workpiece at the top surface of the vacuum cleaning / drying tank in the vacuum cleaning / drying tank. However, since it is necessary to open and close the top surface of the vacuum cleaning / drying tank to insert and remove the basket, the top surface side portion in the vacuum cleaning / drying tank is restricted by the nozzle piping. In some cases, shower cleaning or jet cleaning may not be employed. The conventional one-tank vacuum cleaning / drying machine has limited options for cleaning methods and may lack general versatility.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a one-tank vacuum cleaning and drying machine that can easily perform loading and unloading of a workpiece using a simple mechanism without requiring a large installation space.

  Moreover, the subject of this invention is providing the 1 tank type vacuum cleaning dryer which can employ | adopt shower cleaning or jet cleaning simply instead of immersion cleaning.

  The present invention performs vacuum cleaning using a volatile non-aqueous solvent as a cleaning liquid, reduced-pressure steam cleaning using the solvent vapor, and vacuum drying on a workpiece put in a vacuum cleaning drying tank 1 In the tank-type vacuum cleaning / drying machine, a loading / unloading port is formed in the vacuum cleaning / drying tank, and a loading / unloading port for loading / unloading the workpiece into / from the vacuum cleaning / drying tank from the horizontal direction, usually in the horizontal direction. Is characterized in that an outer door for opening and closing the loading / unloading outlet is attached.

  In the one-tank type vacuum cleaning / drying machine of the present invention, a loading / unloading exit through which a workpiece can be loaded / unloaded from the lateral direction, for example, the horizontal direction, is provided in the vacuum cleaning / drying tank. For example, an in-tank guide mechanism capable of guiding or transporting a bucket on which a workpiece is mounted on a substantially the same plane, for example, on a horizontal plane, via a carry-in / out port, inside and outside the vacuum cleaning / drying tank An outside tank guide mechanism is arranged.

  The work can be carried in and out along the same plane through the carry-in / out port of the vacuum washing and drying tank. Uses a guide mechanism such as a roller conveyor or a transport mechanism such as a chain conveyor to load and unload a workpiece without using a three-dimensional transfer mechanism such as a pick-and-place unit that moves the workpiece up and down and horizontally. It is possible.

  For example, the work loading / unloading work can be performed through the loading / unloading exit by pushing and pulling the work on the free roller conveyor. Therefore, lift the work to the upper part of the vacuum cleaning drying tank, carry the work into the vacuum cleaning drying tank from the top opening of the vacuum cleaning drying tank, and the work in the vacuum cleaning drying tank through the top opening, The workability of the work loading / unloading work can be greatly improved compared to the work of lifting and unloading upward.

  In addition, compared to 3D transport mechanisms such as pick-and-place units, horizontal transport mechanisms such as chain conveyors are compact and inexpensive, so it is possible to suppress an increase in installation space for the work loading / unloading mechanism and an increase in manufacturing costs. . Furthermore, it is convenient because the work of manually loading and unloading a work using a free roller conveyor can be easily changed to a horizontal transport mechanism such as a chain conveyor.

In the present invention, usually, a carry-in / out port is provided in front of the vacuum cleaning / drying tank. In this case, it is desirable that the height or width of the vacuum cleaning / drying tank gradually increase from the rear surface toward the front surface. For example, if the top surface of the vacuum cleaning / drying tank is an inclined surface that is inclined upward from the back surface to the front surface, the vacuum cleaning / drying tank has a shape that expands up and down toward the carry-in / out port. A loading / unloading exit having a large opening area can be provided, and the workability of the basket loading / unloading work is improved.

  In the vacuum cleaning / drying tank of the one-tank vacuum cleaning / drying machine of the present invention, piping can be freely provided on the top side in the interior. That is, inside the vacuum cleaning / drying tank, the cleaning liquid pipe is freely routed along the top surface of the vacuum cleaning / drying tank, and the cleaning liquid is downwardly supplied to the cleaning liquid pipe at predetermined intervals along the pipe length direction. A cleaning liquid nozzle to be blown out can be arranged.

  Unlike the case where the work / basket loading / unloading port is arranged on the top surface of the vacuum washing / drying tank, the piping / nozzle can be arranged in a state most suitable for shower washing or jet washing. Therefore, shower cleaning or jet cleaning can be employed as the cleaning method. Shower cleaning and jet cleaning are advantageous in that they can be performed at a lower cost than immersion cleaning, such as ultrasonic cleaning, and the amount of cleaning agent (solvent) held in the vacuum cleaning / drying tank during cleaning can be reduced.

  In addition, since shower cleaning and jet cleaning can be reliably employed in this way, options for cleaning methods are expanded, and it becomes easy to construct various cleaning and drying systems composed of combinations of various cleaning methods. Therefore, it is possible to easily construct an optimum cleaning system that matches the basket size, workpiece dirt state, tact time, required cleaning quality, budget, and the like. For example, an inexpensive cleaning system including shower cleaning, reduced-pressure vapor cleaning, and vacuum drying can be employed.

  In the one-tank vacuum cleaning / drying machine of the present invention, a loading / unloading port that can be opened and closed by an outer door is disposed on the outer peripheral side surface of the vacuum cleaning / drying tank. If the outer door opens during the immersion cleaning operation, there is a higher risk of leakage of the cleaning liquid than when the carry-in / out port is arranged on the top surface of the vacuum cleaning / drying tank. For example, when the lock mechanism of the outer door becomes inoperable due to a power failure, failure, etc., and the lock is released, a pressure leak occurs through the carry-in / out port, and the cleaning liquid in the vacuum cleaning / drying tank leaks to the outside. There is a fear. Further, if the lock mechanism becomes inoperable during the reduced-pressure vapor cleaning, the reduced-pressure state of the vacuum cleaning / drying tank is gradually released, and the cleaning steam may leak to the outside.

  In order to avoid such an adverse effect, it is possible to arrange a spring member that is always in a state in which a biasing force for locking the outer door is generated in the lock mechanism that locks the outer door in the closed position. desirable. Even when the air cylinder, plunger, etc. that generate the urging force for locking become inoperable due to a power failure, failure, etc., and the urging force cannot be generated, the spring member such as the compression coil spring arranged in the compressed state The locked state can be maintained by the spring force. Thereby, leakage of gas and liquid from the vacuum cleaning / drying tank can be prevented.

1 is a front view, a top view, a left side view, and a right side view showing a one-tank vacuum cleaning dryer of Embodiment 1. FIG. 1B is a front side internal structure diagram, a top side internal structure diagram, a left side internal structure diagram, and a right side internal structure diagram of the one-tank vacuum cleaning dryer of FIG. 1A. It is explanatory drawing which shows the schematic block diagram and the operation example of the 1 tank type vacuum washing dryer of FIG. 1A. It is the front side internal structure figure of the 1 tank type vacuum washing dryer of Embodiment 2, the upper surface side internal structure figure, the left side internal structure figure, and the right side internal structure figure. It is explanatory drawing which shows the schematic block diagram and the example of operation | movement of the 1 tank type vacuum washing dryer of FIG. 2A. It is the front side internal structure figure of the 1 tank type vacuum washing dryer which is another example of Embodiment 2, the upper surface side internal structure figure, the left side internal structure figure, and the right side internal structure figure. It is the front side internal structure figure which shows the 1 tank type vacuum washing dryer of Embodiment 3, the upper surface side internal structure figure, the left side internal structure figure, and the right side internal structure figure. It is the top view which shows an outer door opening / closing mechanism, a front view, and a side view. It is explanatory drawing which shows the locking mechanism of an outer door.

  Below, with reference to drawings, embodiment of the 1 tank type vacuum washing dryer to which the present invention is applied is described.

[Embodiment 1]
(overall structure)
FIG. 1A (a) is a front view of a one-tank vacuum cleaning dryer, FIG. 1A (b) is a top view thereof, FIG. 1A (c) is a left side view thereof, and FIG. It is the right view. FIG. 2A (a) is a schematic internal structural view when viewed from the front side of the single tank type vacuum cleaning dryer, and FIG. 2A (b) is a schematic internal structural view when viewed from the upper side. FIG. 2C is a schematic internal structural diagram when viewed from the left side, and FIG. 2A (d) is a schematic internal structural diagram when viewed from the right side.

  The single tank type vacuum cleaning / drying machine 1 includes a device housing 2 having a rectangular parallelepiped shape as a whole. An operation display panel 3 is attached to the left end of the front surface 2 a of the device housing 2. The operation display panel 3 controls the driving of each part according to a processing program set in advance, and causes the workpiece to be washed and dried.

  Inside the apparatus housing 2, as shown in FIG. 1B, a vacuum cleaning / drying tank 4, a vacuum buffer tank 5 in which the regenerated cleaning agent is stored, a rough cleaning agent tank 6 in which the rough cleaning agent is stored, and finish cleaning A vacuum buffer tank 8 having a finish cleaning agent tank 7 for storing the agent, a vacuum distillation / vapor generator 9, a heat transfer oil tank 10, a gas-liquid separation tank 11, a reserve tank 12 for storing the cleaning agent, a liquid seal A vacuum pump 13 and a mechanical booster pump 14 are respectively disposed. An ultrasonic oscillator 15 is disposed on the top surface of the device housing 2. In this example, a volatile non-aqueous cleaning liquid is used as a cleaning solvent. For example, a hydrocarbon solvent is used.

  The vacuum cleaning / drying tank 4 is arranged at a position slightly below the middle position in the vertical direction on the front side inside the apparatus housing 2. The vacuum cleaning / drying tank 4 includes a bottom surface 21, a front surface 22, a back surface 23, left and right side surfaces 24 and 25, and a top surface 26, and a basket 27 on which a work (not shown) is mounted is loaded on the front surface 22. The carry-out port 28 is open. The carry-in / out port 28 can be opened and closed by an outer door 29 slidably attached to the apparatus housing 2 in the left-right direction. The outer door 29 is exposed forward from a rectangular opening 2b formed in the front surface 2a of the apparatus housing 2.

  The outer door 29 is slidable in the lateral direction between a closed position 29A shown in FIG. 1A (a) and an open position 29B shown in FIG. 1B (a). A lock mechanism for locking the outer door 29 is arranged between the vacuum cleaning / drying tank 4 and the outer door 29. In the closed position 29A, the outer door 29 locked by the locking mechanism is pressed with a sealing member such as an O-ring sandwiched between the front surface 22 side of the vacuum cleaning / drying tank 4 and the carry-in / out port 28 is sealed in an airtight state. become. The structure of the lock mechanism will be described later (see FIGS. 4A and 4B).

  An ultrasonic vibrator 35 is disposed on the bottom surface 21 in the vacuum cleaning / drying tank 4. On this, the free roller conveyor 36 which is a guide mechanism in a tank is arrange | positioned. A substantially horizontal basket guide surface is defined by the upper surface of the free roller conveyor 36. On the front side of the front surface 2 a of the apparatus housing 2, a free roller conveyor 37, which is an outside tank guide mechanism that can horizontally guide the basket 27 from the front to the rear, is disposed. The gantry 38 of the free roller conveyor 37 is attached to the mounting bracket 2c below the opening 2b on the front surface 2a of the apparatus housing 2 in a removable state.

  The horizontal guide surface which is the upper surface of the outer free roller conveyor 37 and the horizontal guide surface which is the upper surface of the inner free roller conveyor 36 are at substantially the same height. Further, the lower end edge of the carry-in / out port 28 is defined by the front end of the inner free roller conveyor 36.

  The vacuum cleaning / drying tank 4 of this example has a constant width, and the left and right side surfaces 24, 25 are vertical surfaces parallel to each other. The height of the vacuum cleaning / drying tank 4 extends upward toward the front. That is, the top surface 26 is an inclined surface that is inclined upward at an acute angle with respect to the horizontal plane from the back surface 23 toward the front surface 22. Thereby, taking in and out of the basket 27 which has the rectangular box shape opened upwards becomes easy.

(Example of washing and drying operation)
FIG. 1C (a) is a schematic configuration diagram of the one-tank vacuum cleaning / drying machine 1, and FIG. 1C (b) is an explanatory diagram illustrating an example of a cleaning / drying operation. An example of the cleaning / drying operation will be described with reference to these drawings.

<Work input>
First, the outer door 29 is opened, and the basket 27 loaded with the workpiece to be cleaned is carried into the vacuum washing / drying tank 4 from the front through the carry-in / out port 28 (FIG. 1C (b): basket supply material). . In this example, the basket 27 loaded with a work is placed on a free roller conveyor 37 which is a guide mechanism outside the tank and pushed from the front, and is a guide mechanism inside the vacuum cleaning / drying tank 4 via the carry-in / out port 28. Place on free roller conveyor 36. Since it is only necessary to push the basket 27 horizontally from the front, the basket feeding operation can be easily performed.

  After carrying the basket 27 into the vacuum cleaning / drying tank 4, the outer door 29 is closed and locked (FIG. 1C (b): door closed / locked). Next, the liquid ring vacuum pump 13 and the mechanical booster pump 14 are driven to evacuate the vacuum cleaning / drying tank 4 (FIG. 1C (b): evacuation).

<Coarse vacuum ultrasonic cleaning>
Next, a hydrocarbon-based solvent, which is a rough cleaning agent stored in the rough cleaning agent tank 6 of the vacuum buffer tank 8, is supplied to the vacuum cleaning / drying tank 4 through the rough cleaning agent supply line 41 (FIG. 1C ( b): Crude solvent supply liquid), and the basket 27 of the vacuum washing / drying tank 4 is immersed in the coarse cleaning agent. Next, the ultrasonic vibrator 16 is driven, and the workpiece is subjected to rough vacuum ultrasonic cleaning for a predetermined time (FIG. 1C (b): rough vacuum ultrasonic cleaning). After the rough vacuum ultrasonic cleaning, the rough cleaning agent is returned to the rough cleaning agent tank 6 from the vacuum cleaning / drying tank 4 through the rough cleaning agent discharge line 42 and the rough cleaning agent filter 43 (FIG. 1C (b): rough solvent Drainage).

<Finished ultrasonic cleaning>
Thereafter, a hydrocarbon solvent, which is a finish cleaning agent stored in the finish cleaning agent tank 7 of the vacuum buffer tank 8, is supplied to the vacuum cleaning / drying tank 4 through the finish cleaning agent supply line 44 (FIG. 1C). (B): Finishing solvent supply), the basket 27 of the vacuum cleaning / drying tank 4 is immersed in the finishing cleaning agent, and the workpiece is subjected to finishing vacuum ultrasonic cleaning for a predetermined time (FIG. 1C (b ): Finishing vacuum ultrasonic cleaning). After the final vacuum ultrasonic cleaning, the final cleaning agent in the vacuum cleaning / drying tank 4 is returned to the finishing cleaning agent tank 7 through the finishing cleaning solution discharge line 45 and the finishing cleaning agent filter 46 (FIG. 1C (b): finishing solvent discharge). liquid).

<Vapor cleaning>
Next, the vacuum cleaning / drying tank 4 and the like are evacuated by a vacuum pump to form a predetermined degree of vacuum, and the vacuum cleaning / drying tank 4 is transferred from the vacuum distiller / vapor generator 9 via the vapor supply line 47. The solvent vapor is supplied, and the workpiece is subjected to reduced-pressure vapor cleaning for a predetermined time (FIG. 1C (b): reduced-pressure vapor cleaning). Thereafter, the liquid from the vacuum cleaning / drying tank 4 is drained, and the finishing solvent condensed in the vacuum cleaning / drying tank 4 is collected in the vacuum buffer tank 5 (FIG. 1C (b): liquid draining).

<Vacuum drying>
Thereafter, the vacuum pumps 13 and 14 are driven to evacuate the vacuum cleaning / drying tank 4, and the workpiece is vacuum-dried for a predetermined time (FIG. 1C (b): vacuum drying).

<Work removal>
After that, the vacuum of the vacuum cleaning / drying tank 4 and the like is released (FIG. 1C (b): release of vacuum), the outer door 29 is unlocked and the outer door 29 is opened (FIG. 1C (b): door unlocking / Door open). Then, the basket 27 loaded with the workpiece after washing and drying is pulled out from the vacuum washing / drying tank 4 through the carry-in / out port 28 and carried out to the outer free roller conveyor 37 (FIG. 1C (b)). : Basket material removal).

[Embodiment 2: Example of performing shower cleaning / jet cleaning]
In the present invention, the vacuum cleaning / drying tank is provided with a carry-in / out port on the front surface, and piping / nozzles for shower cleaning / jet cleaning can be freely arranged on the top surface. 2A and 2B show an example of a single tank type vacuum drying and cleaning machine that performs shower cleaning and jet cleaning. 2A (a) to 2 (d) are a front side internal structure diagram, a top surface side internal structure diagram, a left side internal structure diagram, and a right side internal structure diagram of the one-tank vacuum cleaning dryer of Embodiment 2. FIG. FIG. 2B (a), (b) is an explanatory diagram showing a schematic configuration diagram and an operation example of a one-tank vacuum cleaning dryer.

  Since the basic configuration of the one-tank vacuum cleaning / drying machine 1A of the second embodiment is the same as that of the embodiment, the same reference numerals are given to corresponding parts in FIGS. Omitted. In this example, as shown in FIGS. 2A and 2B, the vacuum cleaning / drying tank 4 has a shower pipe 51 for supplying a solvent horizontally, for example, at a position near the lower side of the top surface 26. Is arranged. A nozzle 52 for injecting a solvent downward is attached to the shower pipe 51 at a predetermined interval along its length direction.

  When such pipes and nozzles for shower cleaning / jet cleaning are arranged in the vacuum cleaning / drying tank 4 of the one-tank vacuum cleaning / drying machine 1A, for example, as shown in FIG. A washing and drying operation can be performed. In this case, the vacuum buffer tank 8 includes a single tank and stores a solvent for shower cleaning.

  In this case, the workpiece is processed in the order of shower cleaning (jet cleaning), reduced-pressure vapor cleaning, and vacuum drying. The procedure before shower cleaning and the procedure after shower cleaning are the same as in the case of the above immersion cleaning (FIG. 1C). In the case of jet cleaning, the workpiece is cleaned by spraying a cleaning agent from the nozzle 52 at a pressure higher than that in shower cleaning.

  In the shower cleaning, a predetermined amount of shower cleaning agent is supplied from the vacuum buffer tank 8 to the vacuum cleaning / drying tank 4 (FIG. 2B (b): shower cleaning / liquid supply), and the shower cleaning agent accumulated in the vacuum cleaning / drying tank 4 is collected. Is circulated through the circulation line 54 by driving the circulation pump 53, whereby the workpiece is subjected to shower cleaning (FIG. 2B (b): shower cleaning (circulation)).

  Thereafter, the vacuum pumps 13 and 14 are driven to perform evacuation (FIG. 2B (b): evacuation), and the shower solvent is removed by flowing air from the air source 55 through the shower pipe 51 (FIG. 2B ( b): Shower piping air blow). Further, the shower solvent is discharged from the vacuum cleaning / drying tank 4 and collected in the vacuum buffer tank 5 (FIG. 2B (b): shower solvent drainage).

  Shower cleaning and jet cleaning require less solvent capacity in the vacuum cleaning / drying tank 4 than immersion cleaning such as ultrasonic cleaning. For this reason, the time required to supply the cleaning agent to the vacuum cleaning / drying tank 4 and the time required to discharge the cleaning agent from the vacuum cleaning / drying tank 4 can be shortened. According to the present invention, it is easy to employ inexpensive shower cleaning / jet cleaning with a short tact time.

(Another example of Embodiment 2)
Here, it is also possible to arrange a transport mechanism for transporting the basket instead of the free roller conveyor used as the guide mechanism inside the tank and the guide mechanism outside the tank.

  2C (a) to (d) are a front side internal structure diagram, a top surface side internal structure diagram, a left side internal structure diagram, and a right side internal structure diagram showing a one-tank vacuum cleaning / drying machine equipped with a transport mechanism. In the illustrated one-tank vacuum cleaning / drying machine 1B, a chain conveyor 36A that is an in-tank transport mechanism is disposed instead of the free roller conveyor 36 that is an in-tank guide mechanism. Moreover, instead of the free roller conveyor 37 which is an outside tank guide mechanism, a chain conveyor 37A which is an outside tank transport mechanism is arranged. By arranging the transfer mechanism, the work loading / unloading work is further facilitated.

[Embodiment 3]
3 (a) to 3 (d) are a front view, a top view, a left side view, and a right side view showing the one-tank vacuum cleaning / drying machine according to the third embodiment. The one-tank vacuum cleaning / drying machine 1C shown in the figure includes a vacuum cleaning / drying tank having a size capable of carrying two baskets 27 simultaneously. Since the basic configuration is the same as that in the case of the one-tank vacuum cleaning / drying machine 1 shown in FIGS. 1A to 1C, the corresponding parts are denoted by the same reference numerals, and description thereof is omitted.

  In the 1 tank type vacuum cleaning / drying machine 1C, a wide outer door 29C corresponding to the wide loading / unloading outlet of the vacuum cleaning / drying tank is disposed. On the front side of the outer door 29 </ b> C, a pair of free roller conveyors 101 and 102 for material supply are arranged in parallel. These respectively guide the basket in the front-rear direction. In addition, a plurality of stock free roller conveyors 103 and 104 are arranged on the left and right, respectively, and these guide the basket 27 in the left-right direction. In order to deliver the basket 27 to and from the pair of free roller conveyors 101 and 102 for feeding material inside the vacuum washing and drying tank, a pair of transport guide mechanisms, for example, a pair of free roller conveyors (not shown) ) Is arranged.

  Instead of the feed free roller conveyors 101 and 102 and the stock free roller conveyors 103 and 104, which are transport guide mechanisms, a transport mechanism such as a drive chain conveyor may be arranged.

[External door opening / closing mechanism / lock mechanism example]
4A (a), (b), and (c) are a plan view, a front view, and a side view showing an example of an opening / closing mechanism of the outer door 29 that opens and closes the loading / unloading port 28. FIG. The opening / closing mechanism 60 causes the power cylinder 61 to slide the outer door 29 having a rectangular outline along the guide rail 62 fixed to the apparatus housing 2 in the apparatus width direction.

  In this example, sliding is performed from an open position 29B where the carry-in / out port 28 shown in the figure is opened to a closed position 29A where the carry-in / out port 28 is closed. On both sides of the outer door 29, a pair of upper and lower engaging plates 63, 64 extending in the width direction are attached. A pair of upper and lower locking plungers 65 and 66 (locking cylinders) are attached to the outer side surfaces on both sides of the vacuum cleaning / drying tank 4, and their telescopic rods protrude horizontally forward. The engagement plates 63 and 64 and the lock plungers 65 and 66 constitute a lock mechanism for the outer door 29.

  Engaging grooves 63a and 64a are formed at the tips of the left and right engaging plates 63 and 64 on the outer door 29 side. When the outer door 29 moves from the open position 29B to the closed position 29A, each engaging groove 63a, The distal end portions 65a and 66a of the telescopic rods of the locking plungers 65 and 66 are fitted into 64a from the side. After sliding the outer door 29 to the closing position 29A, the elastic members 67 for sealing are attached to the four circumferences of the carry-in / out port 28 by pulling the telescopic rods of the locking plungers 65 and 66. Pressed against. Thereby, the loading / unloading exit 28 is sealed in an airtight state. To open the outer door 29, the locking plungers 65, 66 are pushed out to release the lock, and then the outer door 29 is returned along the guide rail 62 to the opening position 29B by the power cylinder 61.

(Another example of the outer door locking mechanism)
FIG. 4B is an explanatory diagram showing an example of a double-acting air cylinder that can be used in place of the locking plungers 65 and 66 arranged in pairs on the left and right sides to lock the outer door 29. is there.

  In this figure, as an example, a pair of double-acting air cylinders 130 used instead of the pair of locking plungers 66 are shown. The double-acting air cylinder 130 includes a cylinder body 131 and a rod 132 that extends through the cylinder body 131. An air pipe 135 for supplying compressed air in the direction 133 for moving the rod 132 forward and an air pipe 136 for supplying compressed air in the direction 134 for moving the rod 132 backward are connected to the cylinder body 131.

  An engagement portion 137 that can be engaged from the side with respect to the engagement groove 64 a at the distal end of one engagement plate 64 of the outer door 29 is provided at the distal end portion of the rod 132 protruding forward from the cylinder body 131. ing. A spring receiver 139 is attached to the rear end portion of the rod 132 protruding rearward from the cylinder body 131 by a rod nut 138. A spring receiver 1140 is also attached to the end surface on the rear side of the cylinder body 131. Between these spring receivers 139 and 140, a compression coil spring 142 is mounted in a compressed state so as to surround the rod 132 coaxially. Therefore, the rod 132 of the air cylinder 130 is always urged in the backward direction by the compression coil spring 142.

  For example, the air cylinder 130 operates as follows. When the outer door 29 is in the open position 29A, the rod 132 is in the most retracted state by the compression coil spring 142. When closing the outer door 29, the rod 132 of the air cylinder 130 is pushed out to the compression coil spring 142 against the spring force to the advanced position. When the outer door 29 slides and closes, the engaging portion 137 at the tip end of the rod 132 at the protruding position engages with the engaging groove 64a of the engaging plate 64 from the lateral direction.

  After the outer door 29 slides to the closed position 29B, the air cylinder 130 is driven to retract the rod 132 backward. As a result, the four peripheral portions of the outer door 29 are pressed against the sealing elastic member 67 attached to the four periphery of the carry-in / out port 28, and the carry-in / out port 28 is sealed in an airtight state. Conversely, the operation of opening the outer door 29 may be performed by pushing the rod 132 forward and then returning the outer door 29 along the guide rail 62 to the opening position 29A by the power cylinder 61.

  The lock mechanism using the air cylinder 130 holds the outer door 29 in a locked state by the spring force of the compression coil spring 142 when an emergency such as a power failure or failure occurs and the air cylinder 130 becomes inoperable. it can. That is, in a state where the outer door 29 is closed and locked, a power failure, failure or the like occurs, the air cylinder 130 becomes inoperable, and the supply of compressed air for urging the rod 132 in the retracting direction stops. is there. In the locked state, the spring force of the compression coil spring 142 acts on the rod 132 as the urging force for locking the outer door 29 in addition to the urging force by the compressed air. Therefore, in an emergency, the locked state (sealed state) of the outer door 29 can be maintained by the urging force of the spring force, and solvent leakage to the outside can be prevented.

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C 1 tank type vacuum cleaning dryer 2 Apparatus housing 2a Front surface 3 Operation display panel 4 Vacuum cleaning drying tank 5 Vacuum buffer tank 6 Coarse cleaning agent tank 7 Finishing cleaning agent tank 8 Vacuum buffer tank 9 Vacuum distillation machine Cumulative vapor generator 10 Heat transfer oil tank 11 Gas-liquid separation tank 12 Reserve tank 13 Liquid-sealed vacuum pump 14 Mechanical booster pump 15 Ultrasonic oscillator 22 Front face 26 Top face 27 Basket 28 Loading / unloading outlet 29, 29C Outer door 29A Closed position 29B Opening position 35 Ultrasonic vibrator 36 Free roller conveyor 36A Chain conveyor 37 Free roller conveyor 37A Chain conveyor 51 Shower piping 52 Nozzle 60 Opening / closing mechanism 61 Power cylinder 62 Guide rail 63, 64 Engaging plate 65, 66 Locking plunger 101, 102 Salary Free roller conveyor 103 stock for free roller conveyor 130 air cylinder 131 cylinder body 132 rod 142 compression coil spring use

Claims (8)

1 tank type vacuum that performs vacuum cleaning using a volatile non-aqueous solvent as a cleaning liquid, reduced-pressure steam cleaning using the vapor of the non-aqueous solvent, and vacuum drying of the workpiece put in the vacuum cleaning / drying tank In the washing dryer
The vacuum cleaning / drying tank is formed with a loading / unloading exit for loading and unloading the workpiece with respect to the vacuum cleaning / drying tank from the lateral direction,
1 tank type vacuum washing drier with which the outer door which opens and closes the said carrying in / out opening is attached to the above carrying in / out opening. In claim 1,
One tank type vacuum cleaning in which a guide mechanism capable of guiding or transporting a bucket loaded with a workpiece in the lateral direction is arranged inside and outside the vacuum cleaning / drying tank via the loading / unloading outlet Dryer. In claim 2,
As the guide mechanism, an in-tank guide mechanism disposed inside the vacuum cleaning / drying tank and an outside-tank guide mechanism disposed outside the vacuum cleaning / drying tank,
The tank guide mechanism is a free roller bearing or a chain conveyor,
The outside tank guide mechanism is a one tank type vacuum cleaning dryer which is a free roller bearing or a chain conveyor. In claim 1,
The carry-in / out port is formed on the front surface of the vacuum cleaning / drying tank,
The vacuum cleaning / drying tank is a one-tank vacuum cleaning / drying machine whose height or width gradually increases from the back to the front. In claim 1,
Inside the vacuum cleaning / drying tank, a cleaning liquid pipe is routed along the top surface of the vacuum cleaning / drying tank,
The one tank type vacuum cleaning dryer in which the cleaning liquid nozzle which blows down the cleaning liquid at a predetermined interval along the pipe length direction is arranged in the cleaning liquid pipe. In claim 1,
Between the vacuum cleaning / drying tank and the outer door, a lock mechanism that locks the outer door in a closed position is disposed,
The said lock mechanism is a 1 tank type vacuum washing dryer provided with the spring member currently hold | maintained in the state which always generate | occur | produces the urging | biasing force for locking the said outer door. In claim 3,
The carry-in / out port is formed on the front surface of the vacuum cleaning / drying tank,
The vacuum cleaning / drying tank has a height or width that gradually increases from the back to the front.
Between the vacuum cleaning / drying tank and the outer door, a lock mechanism that locks the outer door in a closed position is disposed,
The said lock mechanism is a 1 tank type vacuum washing dryer provided with the spring member currently hold | maintained in the state which always generate | occur | produces the urging | biasing force for locking the said outer door. In claim 7,
Inside the vacuum cleaning / drying tank, a cleaning liquid pipe is routed along the top surface of the vacuum cleaning / drying tank,
The one tank type vacuum cleaning dryer in which the cleaning liquid nozzle which blows down the cleaning liquid at a predetermined interval along the pipe length direction is arranged in the cleaning liquid pipe.

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