JP4344256B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning apparatus, and in particular, even when a plurality of cap screws are provided on an object to be cleaned, cleaning that can efficiently clean and remove an object to be removed (excess impregnation liquid) from each of the cap screws. It relates to the device.

  The cast component is a porous body having a large number of burrows (micropores), and microcommunication holes may be formed by connecting these micropores. For example, in pressure-resistant casting parts such as engine blocks and valves, pressure leakage of oil and fat from such minute communication holes becomes a problem. In particular, in recent years, since the workpiece is often thin due to the complexity of machining and the weight reduction of parts, the role of impregnation is increasing in order to ensure leakage resistance.

  Here, the impregnation process is a process for sealing the minute communication holes, and is usually performed as follows. First, the cast part is immersed in the impregnating liquid, and the impregnating liquid is infiltrated into the minute communication holes by a vacuum impregnation method or the like. Next, the excess impregnating liquid is drained by a centrifugal separator, and further washed with washing water, then cured by a curing method according to the impregnating liquid, and the impregnating liquid that has permeated into the micro communication holes. Heat cure. As a result, the impregnating liquid is fixed in the minute communication hole, and the minute communication hole is sealed (Patent Documents 1 and 2).

  This impregnation process is usually performed by storing a plurality of (for example, 50) cast parts in a basket and transferring each process as it is. That is, a basket containing a plurality of cast parts is immersed in the impregnating liquid, and the impregnating liquid is infiltrated into the micro communication holes, and then the basket is rotated at a high speed by a centrifugal separator. As a result, centrifugal force acts on each cast component in the basket, and the excess impregnating liquid is drained.

Further, the basket is transferred to a cleaning device, immersed in a cleaning tank storing cleaning water, and moved up and down in the cleaning tank. Thereby, the excess impregnation liquid is washed and removed from each cast part. In addition, a bubbling device for generating bubbles is disposed at the bottom of the cleaning tank, and bubbles that rise in the cleaning water are brought into contact with the surface of each casting component, and cleaning efficiency of excess impregnating liquid adhering to the surface Improvements are being made.
JP-A-6-327902 (paragraphs [0003-0005]) Japanese Unexamined Patent Publication No. 7-24458 (paragraph [0003])

  Usually, a cast part is provided with a plurality of cap screws. If the excess impregnating liquid remains in the cap screw, the screw thread is crushed by the thermosetting impregnating liquid, and a re-spinning process is required, which increases the work cost.

  Therefore, in the above-described liquid draining process, each cast component is arranged in the basket so that the opening of the bag screw faces outward in order to discharge the excess impregnating liquid in the bag screw by centrifugal force. However, if the plurality of cast parts are stored in the baskets with the opening of the cap screw facing outward, there is a problem that the storage work becomes complicated and the operation cost increases.

  In addition, a cast part is usually provided with a plurality of cap screws, and the openings of all cap screws cannot be directed outward. Therefore, the excess impregnating liquid cannot be discharged by centrifugal force from the bag screw arranged with the opening facing the center side or upward of the basket. Further, in the conventional cleaning device described above, since the cast part is only moved up and down in the cleaning water, a sufficient cleaning effect cannot be obtained except for the cap screw arranged with the opening portion facing downward. .

  As a result, after the cleaning process is completed, before the transition to the curing process, the operator takes out each cast part from the basket one by one and performs air blow or water blow to remove excess impregnating liquid from each bag screw. Had to be discharged. Therefore, there is a problem that the operation cost is increased, and the impregnation liquid necessary for sealing the minute communication holes is removed by the pressure of air blow or the like, resulting in poor sealing and a decrease in yield. There was a problem.

  The present invention has been made in order to solve the above-described problems. Even when a plurality of cap screws are provided on an object to be cleaned, the object to be removed (excess impregnation liquid) is increased from the cap screws. An object of the present invention is to provide a cleaning apparatus that can efficiently perform cleaning and removal.

In order to achieve this object, the cleaning apparatus according to claim 1 includes a holding means for holding a container body in which an object to be cleaned is stored, and a cleaning tank in which cleaning water for cleaning the object to be cleaned is stored. And an elevating means for elevating and lowering the holding means in the cleaning tank, and a casting product impregnated with an impregnating liquid for sealing the micro communication hole is used as the object to be cleaned. An excess impregnating solution adhering to the surface layer is removed by washing, and a bubble generating means disposed near the bottom of the washing tank for generating bubbles in the washing water, and a rotating means for driving the holding means to rotate. with the rotation of the holding means by the rotating means, while maintaining its rotational axis in substantially perpendicular direction and the elevation direction by said lifting means, performed simultaneously with the lifting movement by the elevating means, said container body includes a bottom wall With the surrounding walls and those When the holding means holds the object to be cleaned, a buffer material is placed on the object to be cleaned after the object is held by the holding means. The upper surface side is sealed with the cushioning material, and the holding means includes a contact portion, and an expansion / contraction drive means for extending and retracting the contact portion in the forward direction or the backward direction. The container body is held by means of extending the abutting portion in the advancing direction by the expansion / contraction driving means, and pressing the cushioning material toward the bottom wall side from the upper surface side of the container body by the abutting portion. On the other hand, the release of the holding of the container body by the holding means is performed by shortening the abutting portion in the backward direction by the telescopic driving means and separating the abutting portion from the cushioning material. der Ru.

  According to the cleaning apparatus of the first aspect, the object to be cleaned that has completed the steps of the impregnation process and the liquid draining process is conveyed in a state of being accommodated in the container body. In the cleaning of the object to be cleaned, first, the container body that stores the object to be cleaned is held by the holding means, and immersed in the cleaning water in the cleaning tank together with the holding means. The holding means is driven up and down in the cleaning tank by the lifting and lowering means, and is also rotated and driven by the rotating means at the same time as the lifting and lowering driving. As a result, the object to be cleaned is rotated while moving up and down in the cleaning water together with the container body, and the excess impregnating liquid adhering to the surface layer portion of the object to be cleaned is cleaned and removed. In the cleaning water of the cleaning tank, the bubbles generated from the bubble generating means are rising from the vicinity of the bottom of the cleaning tank toward the liquid surface, and surplus adhering to the surface layer portion of the object to be cleaned also due to the bubbles. The impregnating solution is washed away.

  The cleaning apparatus according to claim 2 is the cleaning apparatus according to claim 1, wherein the lifting and lowering of the holding means by the lifting and lowering means is repeatedly performed between a raised position and a lowered position. At least a part of the container body held by the holding means is a position exposed above the liquid level of the cleaning water in the cleaning tank.

  The cleaning apparatus according to claim 3 is the cleaning apparatus according to claim 2, wherein the ascending position is such that the rotation axis of the holding means rotated by the rotating means is at least lower than the level of the cleaning water in the cleaning tank. This is the upper position.

  The cleaning device according to claim 4 is the cleaning device according to claim 2 or 3, wherein the lowering position is that the entire container body held by the holding means is immersed in the cleaning water of the cleaning tank. Position.

  The cleaning apparatus according to claim 5 is the cleaning apparatus according to any one of claims 1 to 4, wherein the rotation direction of the holding means by the rotation means is changed from the normal rotation direction to the reverse rotation direction, or from the reverse rotation direction to the normal rotation. Reversing means for reversing in the direction is provided.

  A cleaning apparatus according to a sixth aspect is the cleaning apparatus according to the fifth aspect, wherein the reversal of the rotation direction of the holding means by the reversing means is performed each time the holding means rotates approximately one time.

  The cleaning device according to claim 7 is the cleaning device according to any one of claims 1 to 6, wherein the holding means is moved up and down once by the lifting drive of the lifting means, and the holding means is rotated. The rotation period for one rotation by the rotational drive of the means is different from each other.

The cleaning device according to claim 8 is the cleaning device according to any one of claims 1 to 7 , wherein the holding means is provided on a placement surface portion on which a bottom wall side of the container body is placed, and on the placement surface portion. A loading / unloading surface portion having an opening portion for opening and closing the container body, a shutter member provided at the opening portion of the loading / unloading surface portion, and an opening / closing drive means for driving the shutter member in the opening / closing direction, The expansion / contraction driving means is provided on the shutter member. When the shutter member is closed, the contact portion is disposed at a position where the buffer member can be pressed, while the shutter member is opened. In this case, the contact portion is arranged at a position where the container body can be taken in and out from the opening.

The cleaning device according to claim 9 is the cleaning device according to any one of claims 1 to 8 , wherein the elevating means is provided along a standing member standing in the cleaning tank, and the standing member. An elevating member configured to be movable up and down, a connecting member that rotatably connects the holding unit to the elevating member, and an elevating actuator that applies an elevating driving force to the elevating member, and the rotating unit includes the elevating member A first gear member provided on the connecting member of the means, a chain member connected on one side to the gear member, a second gear member connected on the other side of the chain member, and a rotational driving force on the second gear member And a rotary actuator that is disposed on the elevating member of the elevating means.

According to the cleaning device of the first aspect, the container body storing the object to be cleaned is held by the holding means, and the holding means is driven to move up and down by the lifting means in the cleaning tank, and at the same time, the container can be driven to rotate by the rotating means. it can. The rotation by the rotating means is performed while maintaining the rotation axis of the holding means in a direction substantially orthogonal to the raising / lowering direction by the raising / lowering means. Therefore, when the object to be cleaned is moved up and down in the cleaning water and rotated at the same time, the cleaning water flows around the surface layer part of the object to be cleaned, and the direction of the surface layer part of the object to be cleaned is changed by rotation driving. The bubbles rising from the bottom of the cleaning tank can be brought into contact with any surface layer portion of the object to be cleaned, and as a result, the excess impregnation adhered to the surface layer portion of the object to be cleaned as compared with the conventional cleaning device. There is an effect that the liquid can be washed and removed with extremely high efficiency.
Further, the holding means includes a contact portion and an expansion / contraction drive means for driving the contact portion to extend or retract in the forward or backward direction, and the contact portion is extended in the forward direction by the expansion / contraction drive means. The container body can be held by pressing the cushioning material that closes the upper surface side toward the bottom wall side.
That is, since the contact portion is configured to press the container body through the cushioning material, the pressing allows the object to be cleaned housed in the container body and the container body itself to be fixed to the holding means (holding). ) Can be performed simultaneously. As a result, there is no need to separately provide a means for fixing the object to be cleaned in the container body itself, so that the structure of the container body can be simplified and the manufacturing cost can be reduced correspondingly. In addition, since the container body can be held by the holding means simply by putting the object to be cleaned into the container body, it is possible to improve the efficiency of storing the object to be cleaned and to reduce the work cost. There is.
In addition, even when the number of objects to be cleaned stored in the container body is changed every time, the contact portion is interposed with a cushioning material by adjusting the extension amount of the contact portion in the forward direction by the expansion / contraction driving means. Since the container body can be pressed, there is an effect that the object to be cleaned and the container body can be securely fixed regardless of the quantity of objects to be cleaned in the container body. As a result, it is possible to prevent the problem that the object to be cleaned moves in the container body and is damaged and deformed due to collision or the like by rotating the holding means, and the quantity of objects to be cleaned is stored. Since there is no need to prepare various container bodies according to the above, the product cost can be reduced accordingly.

  According to the cleaning apparatus of the second aspect, in addition to the effect of the cleaning apparatus of the first aspect, the lifting and lowering of the holding means by the lifting and lowering means is repeated between the rising position and the lowering position while being rotated by the rotating means. At the same time, the ascending position of the holding means is a position where at least a part of the container body held by the holding means is exposed above the liquid level of the cleaning water. Therefore, if the object to be cleaned is provided with a cap screw, the object to be cleaned is lowered to immerse it in the cleaning water, introduce the cleaning water into the bag screw, and raise the object to be cleaned. The cleaning water exposed above the surface of the washing water can be discharged to the outside together with the excess impregnating liquid, and the washing water is introduced into the bag screw. The discharging operation to the outside can be repeated during the cleaning process. Therefore, there is an effect that the excess impregnating liquid adhering to the bag screw of the object to be cleaned can be cleaned and removed with extremely high efficiency.

  As described above, according to the cleaning device of the present invention, the excess impregnating liquid in the bag screw can be cleaned and removed with high efficiency. Therefore, as in the conventional cleaning device, the bag is used in the liquid draining process using centrifugal force. Since the excess impregnating liquid in the screw is discharged in advance, it is not necessary to arrange each item to be cleaned in the container body so that the opening of the bag screw faces outward, and the storing operation can be simplified. Therefore, the work cost can be reduced accordingly.

  In addition, after the cleaning process is completed, the operator removes the objects to be cleaned one by one from the container body, and confirms whether the excess impregnating liquid remains in the bag screw, as in a conventional cleaning device. The excess impregnating liquid remaining in the cap screw is not required to be discharged by air blow or water blow, and therefore the work after the cleaning is simplified and the work cost is reduced accordingly. There is an effect that can be. Furthermore, the impregnation liquid necessary for sealing the fine communication holes is removed by the pressure of air blow or the like, and there is an effect that it is possible to avoid the problem that the yield is lowered due to the occurrence of poor sealing. .

  According to the cleaning apparatus of the third aspect, in addition to the effect achieved by the cleaning apparatus of the second aspect, the rising position of the holding means is such that the rotation axis when rotated by the rotating means is at least lower than the liquid level of the cleaning water. The upper position is set. Therefore, when the holding means is raised to the raised position, more of the objects to be cleaned housed in the container can be exposed above the liquid level of the cleaning water. The excess impregnating liquid adhering to the surface layer of the washed product can be removed by flowing down with the washing water over a wider range, and the excess impregnating liquid can be discharged and removed together with the washing water from the inside of more bag screws. As a result, there is an effect that it is possible to further improve the cleaning and removal efficiency of the excess impregnating liquid as the entire object to be cleaned housed in the container body.

  Further, when the ascending position of the holding means is set to a position where, for example, the rotation axis is slightly above the liquid level of the cleaning water or coincides with the liquid level, the excess impregnating liquid is washed away from the object to be cleaned. There is an effect that the height of the portion where the holding means is exposed from the surface of the cleaning water can be suppressed to a minimum while ensuring the cleaning removal efficiency. As a result, it is possible to secure a space above the holding means raised to the raised position. For example, the cleaning device can be installed even in a factory with a low ceiling height.

  In this case, since approximately half of the holding means is immersed in the washing water, the buoyancy by the washing water can be used accordingly. Therefore, there is an effect that the driving force required for the elevating means can be reduced, and the elevating means can be reduced in size and the parts cost can be reduced. For example, when the elevating means is constituted by an actuator device such as an electric motor or a hydraulic / pneumatic cylinder, the actuator device can be constituted by a device with a smaller output, thereby reducing the size and the cost of parts. As a result, it is possible to reduce the size of the cleaning device as a whole and reduce the product cost.

  According to the cleaning device of the fourth aspect, in addition to the effect of the cleaning device according to the second or third aspect, the lowering position of the holding means is such that all of the container body held by the holding means is in the cleaning tank. Since the position is immersed in the cleaning water, the direction of the object to be cleaned can be rotated 360 ° in the cleaning water by the rotation of the rotating means. As a result, the efficiency of cleaning and removing the excess impregnating liquid can be further improved. There is an effect that improvement can be achieved.

  According to the cleaning device of the fifth aspect, in addition to the effect of the cleaning device according to any one of the first to fourth aspects, the rotation direction of the holding unit by the rotation unit is changed from the normal rotation direction to the reverse rotation direction, or the reverse rotation. Reversing means for reversing from the direction to the normal direction is provided. Thus, for example, even if the object to be cleaned is exposed from the surface of the cleaning water, the cleaning water remains in the surface layer portion of the object to be cleaned in the normal rotation direction due to the shape of the object to be cleaned. Even if it cannot flow down together, the surface of the object to be cleaned is exposed when the object to be cleaned is exposed from the surface of the cleaning water by reversing the rotation direction to the rotation in the reverse direction by the reversing means. In some cases, the cleaning water can be allowed to flow together with the excess impregnation liquid from the section, and as a result, the efficiency of cleaning and removing the excess impregnation liquid can be improved.

  Similarly, for example, due to the relationship between the opening direction of the cap screw and the rotation direction, even if the rotation of the forward rotation direction does not smoothly introduce and discharge the cleaning water into the cap screw, By reversing the rotation direction to the rotation in the reverse rotation direction by the reversing means, it is possible to smoothly introduce and discharge the washing water into the bag screw, and as a result, the excess impregnation adhering to the bag screw. There is an effect that the liquid can be efficiently discharged together with the cleaning water, and the efficiency of cleaning and removing the excess impregnating liquid can be improved.

  According to the cleaning device of the sixth aspect, in addition to the effect exhibited by the cleaning device of the fifth aspect, the reversing of the rotation direction of the holding means by the reversing means is performed every time the holding means rotates approximately. There is an effect that the time required for the cleaning process can be shortened by securing the number of reversal of the means.

  For example, when an actuator device such as a hydraulic / pneumatic cylinder is mounted on the holding means, it is necessary to wire a hydraulic / pneumatic supply hose to the actuator device. Even in such a case, since the rotation direction is reversed every time the holding means makes approximately one rotation, it is possible to prevent the supply hose from being twisted and damaged.

  Therefore, it is not necessary to increase the strength of the supply hose, to provide a sufficient wiring length, or to provide a complicated mechanism for supplying hydraulic pressure / pneumatic pressure. Accordingly, there is an effect that the product cost of the entire cleaning apparatus can be reduced accordingly.

  According to the cleaning device of the seventh aspect, in addition to the effect produced by the cleaning device according to any one of the first to sixth aspects, an elevating cycle when the holding means reciprocates once by the elevating drive of the elevating means, and the holding means Are different from each other in the rotation period when one rotation is performed by the rotation drive of the rotation means. Therefore, for example, when at least a part of the container body is exposed above the liquid level of the cleaning water at the raised position, each time the holding means reaches the raised position, a different part of the container body is removed from the liquid level. Since the object to be cleaned exposed from the cleaning water can be exposed, it avoids shifting to a part of the plurality of objects to be cleaned contained in the container body, so that the plurality of objects to be cleaned are excessively impregnated. There is an effect that the liquid can be cleaned and removed more evenly.

  Further, if the ascending / descending cycle and the rotation cycle are different from each other, for example, the holding unit is raised to a position where the rotation axis when rotating by the rotating unit is at least above the liquid level of the cleaning water. Thus, by performing the raising / lowering drive of the holding means a predetermined number of times or more, there is an effect that all objects to be cleaned contained in the container body can be always exposed from the surface of the cleaning water, and as a result, the container body The effect that the excess impregnating liquid is evenly cleaned and removed from the plurality of objects to be cleaned stored in the container can be further exhibited.

According to the cleaning device of the eighth aspect , in addition to the effect produced by the cleaning device according to any one of the first to seventh aspects , the holding means includes an opening for taking in and out the container body, and an opening for the opening. Opening / closing driving means for driving the provided shutter member in the opening / closing direction and extending / contracting driving means for driving the contact portion to extend / contract are provided on the shutter member. When the shutter member is opened, the contact portion is arranged at a position where the container body can be taken in and out, so that there is an effect that the container body can be easily taken in and out of the holding means. When is closed, the abutting portion is arranged at a position where the cushioning material can be pressed, so that the container body accommodated in the holding means can be easily held.

According to the cleaning device of the ninth aspect , in addition to the effect exhibited by the cleaning device according to any one of the first to eighth aspects, the rotary actuator is disposed on the lifting member of the lifting means. Therefore, even when the holding means is driven up and down, the distance between the holding means and the rotary actuator can be kept constant, so that transmission of the rotational force from the rotary actuator to the holding means is a constant length chain member Can be done through. As a result, the mechanism for rotationally driving the holding means can be simplified and the cost of parts required for the holding means can be reduced, so that the product cost of the entire cleaning apparatus can be reduced accordingly. There is.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 3 are views showing a cleaning device 1 according to an embodiment of the present invention. FIGS. 1 (a) and 1 (b) are a top view and a front view of the cleaning device 1, respectively. FIG. 3 is a side view of the cleaning apparatus 1, and FIGS. 3A and 3B are a front view and a side view of the cleaning apparatus 1, respectively.

  1 and 2 show a state where the holding frame 3 is raised to the raised position, while FIG. 3 shows a state where the holding frame 3 is lowered to the lowered position. 1 to 3 illustrate a part of the cleaning tank 1 in a cross-sectional view, and illustrate the outer shape of the holding frame 3 using a two-dot chain line. Further, in FIGS. 1 to 3, hydraulic supply hoses to the first and second lifting cylinders 46 a and 46 b, power supply lines to the rotation motor 51, and compressed air supply hoses to the bubbling device 21 are illustrated. Is omitted.

  First, the external configuration of the cleaning apparatus 1 will be described with reference to FIGS. 1 to 3. The cleaning apparatus 1 is an apparatus for cleaning and removing excess impregnating liquid from an object to be cleaned using a cast part immersed in the impregnating liquid (for example, an engine block made of an aluminum alloy) as an object to be cleaned. The basket 6 (refer to FIG. 4) in which an object is stored is driven up and down in the washing water, and at the same time the rotary drive is also performed. Therefore, for example, even when a plurality of cap screws are provided on the object to be cleaned, the excess impregnating liquid adhering to each of the cap screws can be cleaned and removed almost completely. .

  In the impregnation step, the cleaning device 1 is installed on the downstream side of the centrifugal separator that performs the liquid draining process and upstream of the curing device (for example, a bathing apparatus) that performs the curing treatment of the impregnating liquid. The cleaning tank 2, the holding frame 3, the elevating device 4, and the rotating device 5 are mainly provided.

  The cleaning tank 2 is a box-like body whose upper surface side (FIG. 1 (a) front side on the paper surface) is open, and cleaning water (not shown) for cleaning an object to be cleaned is stored in the internal space. Has been. The bottom of the cleaning tank 2 is formed so as to be inclined downward at approximately 4 ° from one side (the right side in FIG. 2) to the other side (the left side in FIG. 2) so that the cleaning water can be discharged without leaving any water. A plurality of drain ports (not shown) are provided at the end on the descending side.

  Further, a bubbling device 21 is disposed near the bottom of the cleaning tank 2 as shown in FIGS. 1 (a) and 1 (b). The bubbling device 21 includes a plurality (three in this embodiment) of bubble discharge pipes 21a, and each of the bubble discharge pipes 21a has a large number of holes. When compressed air is supplied to the bubbling device 21 from an air tank (not shown), the compressed air is discharged from a large number of holes in each bubble discharge pipe 21a, and a large amount of bubbles are generated in the washing water.

  As shown in FIGS. 1A and 1B, each bubble discharge pipe 21 a is disposed directly below the holding frame 3, so that bubbles discharged from each bubble discharge pipe 21 a are transferred to the holding frame 3. While entering the held basket 6, the cleaning water rises toward the liquid level while contacting the object to be cleaned stored in the basket 6. This improves the cleaning and removal efficiency of the excess impregnating liquid adhering to the surface layer portion of the object to be cleaned.

  As will be described later, the liquid level of the cleaning water is lower than the rotation axis of the holding frame 3 when the holding frame 3 is raised to the raised position (the state shown in FIGS. 1 and 2). When the holding frame 3 is lowered to the lowered position (see FIG. 3), the basket 6 (see FIG. 4) held by the holding frame 3 is in a position where it can be immersed in the cleaning water. It has been adjusted.

  The holding frame 3 is a structure for holding the basket 6 and is assembled in a substantially rectangular parallelepiped shape from a plurality of steel squares. The holding frame 3 is supported in the cleaning tank 2 by a lifting device 4 and a rotating device 5 which will be described later, and is moved up and down in the cleaning tank 2 by driving force from these devices 4 and 5. Here, the basket 6 and the holding frame 3 will be described with reference to FIGS. 4 to 6.

  FIG. 4 is a perspective view of the basket 6 and the cushioning material 62. The basket 6 is a container body for storing an object to be cleaned. The basket 6 is made of a steel material such as stainless steel, has a bottom wall and a peripheral wall, and has a substantially cylindrical shape with an open upper surface side (upper side in FIG. 4). It is formed as. As shown in FIG. 4, the bottom wall and the peripheral wall of the basket 6 are provided with a large number of holes 61 so as to allow the washing water and bubbles to enter and exit the basket 6 smoothly. Yes.

  The cushioning material 62 is a member for storing an object to be cleaned in the basket 6 and then placing it on the object to be cleaned and sealing the upper surface side (upper side in FIG. 4) of the basket 6. As shown in FIG. 4, the elastic material such as, for example, is formed into a substantially disk shape having an outer diameter slightly smaller than the inner diameter of the basket 6. In addition, the through-hole drilled in substantially the center of the cushioning material is an opening for allowing cleaning water and bubbles to smoothly enter and exit the basket 6 inside and outside.

  As will be described later, when the basket 6 is held by the holding frame 3, the contact member 39 (see FIGS. 5 and 6) of the first to fourth fixing cylinders 36 holds the basket 6 via the cushioning material 62. It is comprised so that it may press. Thereby, fixation of the to-be-cleaned object accommodated in the basket 6 and holding | maintenance to the holding means of the basket 6 can be performed simultaneously.

  FIGS. 5A and 6A are top views of the holding frame 3, and FIGS. 5B and 5B are front views of the holding frame 3. 5A and 5B show a state in which the shutter 33 is closed, while FIGS. 6A and 6B show a state in which the shutter 33 is opened.

  5 and 6, for ease of understanding, some of the members constituting the shutter 33 are shaded and illustrated, and the basket 6 is virtually illustrated using a two-dot chain line. Yes. Furthermore, in FIG.5 and FIG.6, illustration of the compressed air supply hose to the cylinders 35a-35d and 36a-36d for 1st-4th opening / closing and fixation is abbreviate | omitted.

As described above, the holding frame 3 includes a plurality of steel square bars, that is, a plurality of bottom plates 31 constituting a bottom wall, and a plurality of side plates 32 constituting front, rear, left and right side walls. And the side plate 32 are assembled in a substantially rectangular parallelepiped shape with the upper surface side (FIG. 5 (a) and FIG. 6 (a) front side in FIG. 6) facing the bottom wall opened. The “mounting surface portion” described in claim 8 corresponds to the bottom wall constituted by the bottom plate 31, and the “entrance / exit surface portion” corresponds to the upper surface side facing the bottom wall.

  The holding frame 3 is provided with a shutter 33 that can be opened and closed on the upper surface side thereof, a pair of slide shafts 34 that supports the shutter 33 so as to be opened and closed, and a driving force 4 in the opening and closing direction. The first to fourth open / close cylinders 35a to 35d and the four first to fourth fixing cylinders 36a to 36d attached to the shutter 33 are mainly provided.

  As shown in FIGS. 5 and 6, the shutter 33 includes left and right shutter portions 33 a and 33 b disposed opposite to each other, and these left and right shutter portions 33 a and 33 b are connected to the shutter 33 a 1 and 33 b 1 via the slide bushes 33 a 1 and 33 b 1. The slide shafts 34 provided on both sides are supported so as to be slidable. The pair of slide shafts 34 are fixed to side plates 32 constituting the upper surface side of the holding frame 3 while being arranged substantially parallel to each other.

  Further, as shown in FIGS. 5 and 6, the first to fourth open / close cylinders 35a to 35d are fixed to the side plate 32 while being arranged substantially parallel to the slide shaft 34, and are attached to the left shutter portion 33a. The first and second opening / closing cylinders 35a and 35b for applying the opening / closing driving force have mutually extending and contracting directions relative to the third and fourth opening / closing cylinders 35c and 35d for applying the opening / closing driving force to the right shutter portion 33b. They are arranged back to back so that they are reversed.

  And as shown in FIG.5 and FIG.6, while the front-end | tip part of the expansion-contraction rod of 1st and 2nd cylinder 35a, 35b is connected with the left shutter part 33a via the connection part 33a2, while 3rd And the front-end | tip part of the expansion-contraction rod of the cylinders 35c and 35d for 4th opening / closing is connected with the right shutter part 33b via the connection part 33b2. Therefore, when the telescopic rods of these first to fourth opening / closing cylinders 35a to 35d are driven to extend and contract, the left and right shutter portions 33a and 33b move in the left and right direction along the slide shaft 34 (FIG. 5). And left and right in FIG. 6).

  That is, when the telescopic rods of the first to fourth opening / closing cylinders 35a to 35d are driven to extend from the state in which the left and right shutter portions 33a and 33b are closed (see FIG. 5), The shutter portions 33a and 33b slide in directions away from each other, and the shutter 33 is opened (see FIG. 6). As a result, as shown in FIG. 6A, the upper surface side (the front side in FIG. 6) of the holding frame 3 is opened, and the basket 6 can be taken in and out from the opened portion.

  Note that the left and right shutter portions 33a and 33b are configured so as to be recessed so that the sides facing each other correspond to the outer diameter of the basket 6 in a top view shown in FIG. Therefore, the sliding amount of the left and right shutter portions 33a and 33b necessary for taking in and out the basket 6 can be shortened, and the first to fourth opening / closing cylinders 35a to 35b can be configured with smaller sizes. In addition to reducing the component cost, the entire holding frame 3 can be reduced in size.

  Further, as shown in FIGS. 5 and 6, a plurality (six in this embodiment) of positioning members 37 are disposed on the bottom plate 31 of the holding frame 3 at substantially equal intervals in the circumferential direction. The basket 6 placed on the wall 31 has its peripheral wall held by the positioning member 37 and is positioned at a predetermined position in the holding frame 3.

  Furthermore, as shown in FIGS. 5 and 6, a plurality of (four in this embodiment) guide members 38 are disposed in the holding frame 3. The guide member 38 is a member for guiding the basket 6 to a predetermined position when the basket 6 is placed on the bottom plate 31 of the holding frame 3, and is shown in FIGS. 5 (b) and 6 (b). As shown in the figure, the holding frame 3 is curved so that it protrudes inward, that is, the distance between the guide members 38 becomes narrower toward the bottom plate 31 side.

  Therefore, when the basket 6 suspended and conveyed by the crane or the like from the liquid draining process is lowered into the holding frame 3, even if the lowering position of the basket 6 is slightly shifted, the bottom of the basket 6 is guided to the guide member 38. It is possible to guide inward by the curvature of and smoothly arrange to a predetermined position (positioning position by the positioning member 37). The basket 6 is placed on the bottom plate 31 on the bottom wall side.

  When the telescopic rods of the first to fourth open / close cylinders 35a to 35d are shortened from the state in which the left and right shutter portions 33a and 33b are opened (see FIG. 6), the left and right shutter portions are interlocked with the shortening drive. The shutters 33a and 33b are slid in directions close to each other to close the shutter 33 (see FIG. 5). As a result, as shown in FIG. 5, first to fourth fixing cylinders 36a to 36d described later are disposed on the upper surface side of the basket 6, and the basket 6 can be held.

  Specifically, as shown in FIGS. 5 and 6, the left and right shutter portions 33 a and 33 b include two first to fourth fixing cylinders 36 a to 36 d with the telescopic rods facing the bottom plate 31 side of the holding frame 3. A contact member 39 having a substantially disk shape is attached to the distal end side of the telescopic rod.

  Therefore, from the state where the basket 6 is installed in the holding frame 3 and the left and right shutter portions 33a and 33b are closed (see FIG. 5), the telescopic rods of the first to fourth fixing cylinders 36a to 36d are driven to extend. By the extension drive, the contact member 39 enters the inside from the upper surface side of the basket 6 and presses the basket 6 through the cushioning material 62 (see FIG. 4). As a result, the object to be cleaned stored in the basket 6 is pressed against the bottom wall of the basket 6 by the cushioning material 62 and fixed, and the basket 6 itself is pressed against the bottom plate 31 of the holding frame 3 to hold the inside of the holding frame 3. Held in.

  As a result, it is possible to simultaneously fix the object to be cleaned and the basket 6 itself (holding by the holding frame 3). Therefore, it is not necessary to separately provide means for fixing the object to be cleaned in the basket 6 so that the objects to be cleaned do not collide with each other in the basket 6 to cause damage and deformation, and the structure of the basket 6 is simplified. Therefore, the product cost can be reduced accordingly. Further, when the basket 6 is held on the holding frame 3, it is only necessary to put an object to be cleaned into the basket 6 and place the cushioning material 62 on the object to be cleaned. It is possible to improve the efficiency of the storing work in the work 6 and reduce the work cost.

  Further, even when the quantity of objects to be cleaned stored in the basket 6 is different, the moving amount of the contact member 39 is adjusted by the extension amount of the telescopic rod by the first to fourth fixing cylinders 36a to 36d. The buffer material 62 can be reliably pressed. Therefore, the object to be cleaned and the basket 6 can be reliably fixed and held regardless of the amount of the object to be cleaned stored in the basket 6, and as a result, the holding frame 3 is driven to rotate as will be described later. Even in this case, it is possible to prevent the problem that the object to be cleaned moves around in the basket 6 and is damaged and deformed due to a collision or the like, and the baskets 6 of various sizes corresponding to the quantity of objects to be cleaned are preliminarily provided. Since it is not necessary to prepare, the product cost can be reduced accordingly.

  Each contact member 39 is configured to be detachable from the telescopic rods of the first to fourth fixing cylinders 36a to 36d, and can be replaced according to the number of objects to be cleaned stored in the basket 6. It is said that. That is, the quantity of objects to be cleaned stored in the basket 6 is extremely small, and the cushioning material 62 is pressed by the contact member 39 even when the telescopic rods of the first to fourth fixing cylinders 36a to 36d are extended to the maximum. In such a case, the buffer member 62 can be pressed by replacing the contact member 39 with a thicker contact member 39.

  When the basket 6 is taken out of the holding frame 3 after the cleaning by the cleaning device 1 is finished, first, the telescopic rods of the first to fourth fixing cylinders 36a to 36d are driven to be shortened to cushion the contact member 39. The basket 6 is released from the holding frame 3 by being separated from the material 62. Next, the telescopic rods of the first to fourth open / close cylinders 35a to 35d are driven to extend, and the left and right shutter portions 33a and 33b are slid in a direction away from each other. Thereby, since the shutter 33 is opened, the basket 6 can be taken out from the holding frame 3.

  As described above, the shutter 33 that can be opened and closed is provided on the holding frame 3, and the first to fourth fixing cylinders 36a to 36d (contact members 39) are disposed on the shutter 33, so that the shutter 33 is opened. Thus, the abutting member 39 is arranged at a position where the basket 6 can be taken in and out, and the basket 6 can be easily taken in and out, and the abutting member 39 is pressed against the cushioning material 62 by closing the shutter 33. Therefore, the basket 6 can be easily held in the holding frame 3.

  As shown in FIGS. 5 and 6, a rotary joint 41 of an elevating means 4 to be described later is connected to the left and right side surfaces of the holding frame 3, and the holding frame 3 is connected to the cleaning tank 2 via the rotary joint 41. It is supported so that it can be raised and lowered within.

  Returning to FIG. The lifting device 4 is a device for driving the holding frame 3 up and down, and a pair is disposed on both the left and right sides of the cleaning tank 2, and a rotary joint 41, a lifting plate 42, a slide shaft 43, a top plate 44, The first and second hydraulic cylinders 46a and 46b are mainly provided.

  The rotary joint 41 has one side connected to the holding frame 3 and the base side connected to the elevating plate 42, and one side connected to the holding frame 3 is rotatable relative to the base side connected to the elevating plate 42. It is configured. Therefore, as will be described later, when the holding frame 3 is rotationally driven, only one side of the rotary joint 41 is rotated together with the holding frame 3.

  In addition, each cylinder 35a-35d, 36a-36d mentioned above arrange | positioned at the holding | maintenance flame | frame 3 is a pneumatic cylinder driven with compressed air, The supply hose (not shown) which supplies compressed air to them is as follows. The air tank disposed outside the cleaning tank 2 is connected to each of the cylinders 35 a to 35 d and 36 a to 36 d through a through hole formed in the rotary joint 41.

  As shown in FIGS. 1 to 3, the elevating plate 42 is configured in a substantially rectangular flat plate shape when viewed from the front, and four slide bushes 42 a are provided on the back side (the front side in FIG. 2). It is arranged. The elevating plate 42 is supported by the pair of slide shafts 43 through these slide bushes 42a so as to be slidable. A top plate 45 is disposed at the upper end of the elevating plate 42.

  As shown in FIGS. 1 to 3, a total of four slide shafts 43 are erected along the inner surfaces of both side walls of the cleaning tank 2. Each slide shaft 43 has its lower end supported on the side wall of the cleaning tank 2 via a support member 44a, while its upper end side is erected on the side wall of the cleaning tank 2 via a support member 44b. It is supported by the gate pillar member 44c. The slide shafts 43 are disposed substantially parallel to each other and substantially orthogonal to the liquid level of the cleaning water.

  As shown in FIGS. 1 to 3, the first and second elevating cylinders 46 a and 46 b are disposed on the outer surfaces of both side walls of the cleaning tank 2 substantially in parallel with the slide shaft 34, and the distal ends of the telescopic rods thereof. The unit is connected to the lift plate 42 via the top plate 45. Therefore, when the telescopic rods of the first and second lifting cylinders 46a and 46b are driven to extend and contract, the lifting plate 42 moves in the vertical direction along the slide shaft 43 (for example, FIG. ) The slide frame is driven in the vertical direction), and the holding frame 3 is driven up and down.

  That is, from the state in which the holding frame 3 is raised to the ascending limit position (hereinafter referred to as “rising position”) (see FIGS. 1 and 2), the telescopic rods of the first and second lifting cylinders 46a and 46b are moved. When the drive is shortened, the lift plate 42 is slid in the descending direction in conjunction with the shortening drive, and the holding frame 3 is driven downward in the wash water. When the telescopic rods of the first and second elevating cylinders 46a and 46b are further shortened, the holding frame 3 is lowered to the lower limit position (hereinafter referred to as “lower position”) (see FIG. 3). ).

  Similarly, from the state where the holding frame 3 is lowered to the lowered position (see FIG. 3), when the telescopic rods of the first and second lifting cylinders 46a and 46b are driven to extend, The elevating plate 42 is slid in the upward direction, and the holding frame 3 is lowered to the lowered position in the wash water (see FIGS. 1 and 2). As will be described later, the raising and lowering of the holding frame 3 is repeatedly performed between the raised position and the lowered position during the execution of the cleaning process.

  The rotation device 5 is a device for driving the holding frame 3 to rotate, and mainly includes a rotation motor 51, a drive chain 52, and the like. The motor 51 for rotation is comprised from the electric motor which can rotate to a normal / reverse direction, and is arrange | positioned on the top plate 45 of the raising / lowering apparatus 4 mentioned above. A sprocket (not shown) is attached to the drive shaft of the rotation motor 51, and this sprocket is attached to one side of the rotary joint 41 of the lifting device 4 described above via the drive chain 52. Connected to a sprocket (not shown).

The first gear member described in claim 9 is a sprocket attached to the rotary joint 41, and the second gear member is a sprocket attached to the drive shaft of the rotary motor 51, respectively. To do.

  When the drive shaft of the rotation motor 51 is rotated, the rotation of the drive shaft is transmitted to the holding frame 3 via the drive chain 52 and the rotary joint 41. That is, when the drive shaft of the rotation motor 51 is rotated in the forward direction, the rotation is transmitted in the order of the drive chain 52, the rotary joint 41, and the holding frame 3. As a result, the holding frame 3 is rotated in the forward direction (see FIG. 2 and FIG. 3B (in the direction of arrow R1).

  Similarly, when the drive shaft of the rotation motor 51 is rotated in the reverse direction, the rotation is transmitted in the order of the drive chain 52, the rotary joint 41, and the holding frame 3, and as a result, the holding frame 3 is rotated in the reverse direction (FIG. 2). And in the direction of arrow R2 in FIG. Note that the rotation of the holding frame 3 is continuously performed simultaneously with the raising and lowering during the execution of the cleaning process, as will be described later. Further, the rotation of the holding frame 3 is reversed every rotation.

  Here, since the lifting device 4 described above is configured such that the height positions of the left and right rotary joints 41 coincide, the rotation of the holding frame 3 keeps its rotation axis in a direction substantially perpendicular to the lifting direction. However, it is performed simultaneously with the up-and-down movement.

  Since the motor 51 for rotation is arrange | positioned on the top plate 45 of the raising / lowering apparatus 4, even when the holding frame 3 is driven up / down by the raising / lowering apparatus 4, the motor 51 for rotation and the holding frame 3 ( That is, the distance from the rotary joint 41) can be kept constant, and the rotational force can be transmitted from the rotary motor 51 to the rotary joint 41 via the drive chain 52 having a fixed length. As a result, since it is not necessary to provide a mechanism for adjusting the tension of the drive chain 52, the structure of the rotating device 5 can be simplified, and the product cost of the cleaning device 1 as a whole can be reduced accordingly. Can do.

  Further, the lifting / lowering device 4 moves up and down the holding frame 3 while being rotated by the rotating device 5, and at the raised position, at least a part of the basket held by the holding frame 3 is above the liquid level of the cleaning water. (More specifically, the rotation axis of the holding frame 3 is above the liquid level).

  Therefore, according to the cleaning apparatus 1 of the present embodiment, even if the object to be cleaned is provided with the cap screw, the object to be cleaned is immersed in the cleaning water while rotating the holding frame 3 by the lowering of the holding frame 3. The washing water can be introduced into the bag screw, and the washing frame introduced into the bag screw is exposed above the surface of the washing water by rotating the holding frame 3 while rotating the article to be washed. Water can be discharged to the outside together with the excess impregnation liquid. Furthermore, since the holding frame 3 is repeatedly raised and lowered between the raised position and the lowered position, it is possible to repeatedly perform the operation of introducing cleaning water into the bag screw and discharging it to the outside. Therefore, the excess impregnating liquid adhering in the bag screw of the object to be cleaned can be cleaned and removed with extremely high efficiency.

  As a result, like the conventional cleaning device, in order to discharge the excess impregnating liquid in the bag screw in advance in the liquid draining process using centrifugal force, each object to be cleaned is so that the opening of the bag screw faces outward. Is not required to be placed in the basket 6 and the storing operation can be simplified, so that the operation cost can be reduced accordingly.

  In addition, after the cleaning by the cleaning device 1 is completed, as in the conventional cleaning device, the operator takes out the objects to be cleaned one by one from the basket 6, and the excess impregnating liquid remains in the bag screw. Since there is no need to perform the operation of confirming whether or not the remaining excess impregnating liquid is discharged by air blow or water blow, the inspection work can be simplified correspondingly and the work cost can be reduced. In addition, the impregnation liquid necessary for sealing the fine communication holes is removed by the pressure of air blow or the like, so that the problem that the yield is lowered due to the occurrence of poor sealing can be avoided.

  For example, when the rising position of the holding frame 3 is set at a position where the rotation axis of the holding frame 3 is slightly above the liquid level of the cleaning water or coincides with the liquid level, the excess impregnating liquid is washed from the object to be cleaned. The height of the part where the holding frame 3 is exposed from the liquid surface of the cleaning water can be minimized while ensuring the cleaning and removing efficiency to be removed. As a result, a space can be secured above the holding frame 3 that has been raised to the raised position, so that the cleaning device 1 can be installed even in a factory with a low ceiling height, for example.

  Further, in this case, since almost half of the holding frame 3 is immersed in the washing water, the buoyancy by the washing water can be used accordingly. Accordingly, the driving force and load resistance value required for the lifting device 4 can be reduced. For example, the first and second lifting cylinders 46a and 46b can be configured with hydraulic cylinders with smaller outputs, or slide shafts. By reducing the diameter of 43, the size of the elevating device 4 can be reduced and the cost of parts can be reduced.

  The lowering position of the holding frame 3 is a position where the entire basket 6 held by the holding frame 3 is immersed in the cleaning water, so that the direction of the object to be cleaned can be rotated 360 ° in the cleaning water. As a result, it is possible to further improve the cleaning and removal efficiency of the excess impregnating liquid.

  Here, the raising / lowering cycle when the holding frame 3 reciprocates once by the raising / lowering drive of the raising / lowering device 4 and the rotation cycle when making one rotation by the rotational driving of the rotating device 5 are different from each other. Therefore, when the holding frame 3 is raised to the raised position, a different part of the basket 6 can be exposed from the liquid level every time the raising frame 3 is lifted, so that the plurality of objects to be cleaned contained in the basket 6 can be exposed. Only a part of the objects to be cleaned are exposed above the liquid surface, that is, the objects to be cleaned having a high exposure frequency and the objects to be cleaned having a low exposure frequency are avoided. The excess impregnating liquid can be more uniformly washed away from the washed product.

  Further, in the cleaning apparatus 1 of the present embodiment, when the holding frame 3 is raised to the raised position, the rotation axis of the holding frame 3 is above the liquid level of the cleaning water. If the periods are different from each other, all the objects to be cleaned stored in the basket 6 can always be exposed from the surface of the cleaning water by performing the lifting and lowering driving of the holding frame 3 a predetermined number of times or more. Therefore, the effect of cleaning and removing the excess impregnating liquid evenly from the plurality of objects to be cleaned stored in the basket 6 can be further exhibited.

  The drive chain 52 is a joint link configured by sequentially connecting each joint plate to an adjacent joint plate by inserting a pin into a pin hole drilled in the joint plate. The drive chain 52 is immersed in the cleaning water. Therefore, in the case of a general drive chain, when the impregnating liquid that has flowed out into the cleaning water flows between the pin and the pin hole, the impregnating liquid is cured by frictional heat during driving, and the driving resistance of the driving chain is reduced. Inconveniences such as increase in size occur.

  Therefore, in the cleaning device 1 of the present invention, the drive chain 52 is used in which the inner diameter of the pin hole is made larger than the outer diameter of the pin, and a slight gap is formed between the opposing surfaces of the pin and the pin hole. This suppresses the generation of frictional heat between the pin and the pin hole during driving, making it difficult for the impregnating solution to harden. Can be smoothly rotated in the pin hole, so that the drive chain 52 can always be driven in a stable state.

  Next, the electrical configuration of the cleaning apparatus 1 will be described with reference to FIG. FIG. 7 is a block diagram showing an electrical configuration of the cleaning apparatus 1. The main control board C of the cleaning apparatus 1 is a CPU 81 that is an arithmetic unit, a ROM 82 that records various control programs executed by the CPU 81 and fixed value data, and various types of data for temporarily storing the data. A RAM 83 which is a memory is mounted. The CPU 81, ROM 82, and RAM 83 are connected to each other via a bus line 84. The bus line 84 is also connected to an input / output port 85.

  The program of the flowchart shown in FIG. 8 is stored in the ROM 82. The ROM 82 also stores a pattern table that defines cleaning patterns such as the driving speed and the number of driving times of the lifting device 4 and the rotating device 5. By setting the driving speed to high speed (low speed), the holding frame 3 (that is, the object to be cleaned) can be moved up and down or rotated at high speed (low speed) in the cleaning water, and the number of times of driving is increased (decreased). As a result, the cleaning time can be extended (shortened).

  The operator can arbitrarily select a cleaning pattern from the operation panel 89 according to the shape and quantity of the object to be cleaned, the number of cap screws, or the physical properties of the impregnating liquid used. The CPU 81 detects the cleaning pattern selected by the operator, reads the driving speed and the like corresponding to the cleaning pattern from the pattern table, and drives and controls the lifting device 4 and the rotating device 5 based on the read driving speed and the like.

  As shown in FIG. 7, a motor drive unit 86, a hydraulic cylinder drive unit 87, an air cylinder drive unit 88, an operation panel 89, and other input / output devices 41 are connected to the input / output port 85. The main control board C transmits / receives various commands and signals to / from the motor driving unit 86 and the like via the input / output port 85, and controls these driving units and the like.

  The motor drive unit 86 is a control circuit for driving and controlling the rotation motor 51 based on an instruction from the CPU 81, and controls the power supplied to the rotation motor 51 to control the rotation speed and rotation of the rotation motor 51. Control the direction. The rotation motor 51 is a motor for applying a rotation driving force to the holding frame 3, and the holding frame 3 is rotated in the cleaning tank 2 by applying the rotation driving force.

  The hydraulic cylinder drive unit 87 is a control circuit for driving and controlling the first and second lifting cylinders 46a and 46b based on an instruction from the CPU 81, and controls the supply pressure and supply direction of the hydraulic pressure supplied from the hydraulic tank. Controlled by a solenoid valve, the expansion / contraction speed and driving direction of the first and second lifting cylinders 46a and 46b are controlled. The first and second lifting / lowering cylinders 46 a and 46 b are hydraulic cylinders for applying a lifting driving force to the holding frame 3, and the holding frame 3 is lifted and lowered in the cleaning tank 2 by applying the lifting driving force. .

  The air cylinder driving unit 88 is a control circuit for driving and controlling the first to fourth opening / closing cylinders 35a to 35d and the first to fourth fixing cylinders 36a to 36d based on an instruction from the CPU 81. The supply pressure and supply direction of the compressed air supplied from the cylinder are controlled by a solenoid valve to control the expansion / contraction speed and drive direction of each of the cylinders 35a to 35d and 36a to 36d.

  The first to fourth opening / closing cylinders 35a to 35d are air cylinders for applying an opening / closing driving force to the shutter 33, and by applying the opening / closing driving force, the left and right shutter portions 33a, 33b are slid and driven. Is opened and closed. The first to fourth fixing cylinders 36a to 36d are air cylinders for applying a driving force for pressing the cushioning material 62 of the basket 6 to the abutting member 39. By applying the driving force, The basket 6 is held by the holding frame 3.

  The operation panel 89 is provided with a plurality of buttons and operators such as a cleaning start button, a stop button, and a cleaning pattern setting operator, and various operations are performed by operating these buttons and operators. Further, as another input / output device 90, for example, an area sensor for detecting the intrusion of an operator into a predetermined area, a position sensor for detecting the position of the telescopic rod of each pneumatic / hydraulic cylinder, or the shutter 33 A mechanical sensor that detects the open / closed state of the sensor is exemplified (none of the sensors are shown).

  Next, the cleaning driving process performed by the cleaning apparatus 1 will be described with reference to the flowchart of FIG. FIG. 8 is a flowchart showing the cleaning driving process. This process is a process executed by the CPU 81 at the timing when the operator gives an instruction to start cleaning. The holding frame 3 is driven to move up and down in the cleaning tank 2 and is rotated at the same time to hold the holding frame 3 (basket 6). ) Remove the excess immersion liquid from the object to be cleaned.

  Regarding the cleaning driving process, the CPU 81 first drives the first to fourth opening / closing cylinders 35a to 35d in the shortening direction to close the shutter 33 (S1). That is, the start of the cleaning driving process means that the basket 6 that has been transported by the crane or the like from the liquid draining process step has already been arranged at a predetermined position in the holding frame 3, and the operator presses the cleaning start button. This indicates that the user has pressed and instructed the start of cleaning.

  Therefore, in order to hold the basket 6 in the holding frame 3, first, the shutter 33 is closed (S1, see FIG. 5), and then the first to fourth fixing cylinders 36a to 36d are driven in the extending direction to By pressing the buffer material 62 with the contact member 39, the basket 6 is held in the holding frame 3 (S2).

  After the basket 6 is held in the holding frame 3 by the processing of S1 and S2, the expansion speed V and the rotation speed R designated for driving the first and second lifting cylinders 46a and 46b and the rotation motor 51 are designated. (S3). As a result, the lifting driving force by the first and second lifting cylinders 46 a and 46 b and the rotational driving force by the rotating motor 51 are applied to the holding frame 3, and the holding frame 3 is rotated while being lifted and lowered in the cleaning tank 2. The

  In addition, the expansion / contraction speed V and the rotation speed R are changed according to the cleaning pattern set by the operator. The cleaning pattern can be arbitrarily set by a cleaning pattern setting operator on the operation panel 90. That is, the CPU 81 detects the cleaning pattern set by the operator, reads the expansion / contraction speed V and rotation speed R corresponding to the cleaning pattern from the pattern table in the ROM 82, and based on the read speeds V and R, The first and second lifting / lowering cylinders 46a and 46b and the rotation motor 51 are driven.

  Here, since the expansion / contraction speed V and the rotation speed R are constant values, the drive speeds of the first and second elevating cylinders 46a and 46b and the rotation motor 51 are constant during the cleaning drive process. Thereby, control cost can be reduced. However, as will be described later, the driving speed varies before and after the driving direction is reversed (S5, S7).

  After starting the driving of the first and second elevating cylinders 46a and 46b and the rotation motor 51 by the process of S3, the first and second elevating cylinders 46a and 46b expand and contract to the most extended position or the most shortened position. It is determined whether or not it has been driven, that is, whether or not the holding frame 3 has been raised or lowered to the above-described raised position or lowered position (S4).

  As a result, when it is determined that the first and second elevating cylinders 46a and 46b are extended and retracted to the most extended position or the most shortened position, and the holding frame 3 has already reached the raised position or the lowered position. (S4: Yes), in order to avoid a decrease in the cleaning efficiency due to the stop of the up-and-down movement of the holding frame 3, the extension drive directions of the first and second up-and-down cylinders 46a and 46b are reversed (S5). ). Thus, the holding frame 3 that has reached the raised position (lowered position) starts to be lowered (raised) toward the lowered position (upward position).

  On the other hand, in the process of S4, it is determined that the first and second lifting / lowering cylinders 46a and 46b are not extended and retracted to the most extended position or the most shortened position, and the holding frame 3 has not yet reached the raised position or the lowered position. If it is to be performed (S4: No), the process of S5 is skipped and the process proceeds to S6 in order to continue the up-and-down movement of the holding frame 3.

  In the process of S6, it is determined whether or not the rotation motor 51 has been rotated by a predetermined number of revolutions, that is, whether or not the holding frame 3 has rotated once in the forward or reverse direction (S4). As a result, when it is determined that the rotation motor 51 has already been rotated a predetermined number of times and the holding frame 3 has rotated once in the forward or reverse direction (S6: Yes), the rotation of the rotation motor 51 is rotated. The driving direction is reversed (S7), and the process proceeds to S8.

  Thereby, the rotation direction of the holding frame 3 is reversed from the normal rotation direction (reverse rotation direction) to the reverse rotation direction (normal rotation direction). As a result, the compressed air supply hoses to the first to fourth opening / closing and fixing cylinders 35a to 35d and 36a to 36d are not twisted and damaged as the holding frame 3 rotates. Can do. Therefore, it is not necessary to reinforce the strength of such a supply hose, to give a margin to the wiring length, or to provide a complicated mechanism for supplying air pressure instead of the supply hose. By reducing the part cost, the product cost of the cleaning device 1 as a whole can be reduced accordingly.

  In addition, by reversing the rotation direction of the holding frame 3 in this way, for example, due to the shape of the object to be cleaned (for example, complicated bending), the object to be cleaned is rotated in the normal rotation direction. Even if the object is exposed from the surface of the cleaning water, even if the cleaning water remains on the surface layer of the object to be cleaned and cannot flow down with the excess impregnating liquid, the rotation direction is reversed by the reversing means. When the object to be cleaned is exposed from the surface of the cleaning water by reversing the rotation in the direction, the cleaning water may be allowed to flow together with the excess impregnating liquid from the surface layer portion of the object to be cleaned. Further, it is possible to improve the cleaning and removing efficiency of the excess impregnating liquid.

  Similarly, for example, due to the relationship between the opening direction of the cap screw and the rotation direction, even if the rotation of the forward rotation direction does not smoothly introduce and discharge the cleaning water into the cap screw, By reversing the rotation direction to the reverse rotation direction, the washing water can be smoothly introduced into and discharged from the bag screw, and as a result, the excess impregnating liquid adhering to the bag screw is washed away. Since it is discharged together with water, it is possible to improve the cleaning and removal efficiency of the excess impregnating liquid.

  Further, by reversing the rotation direction of the holding frame 3 every rotation, it is possible to secure the number of times the holding frame 3 is reversed within a limited cleaning time and to improve the cleaning efficiency. As a result, the time required for cleaning can be shortened.

  In the process of S8, whether or not the first and second elevating cylinders 46a and 46b have been reciprocated a specified number of times n, that is, the holding frame 3 is lowered from the raised position to the lowered position and raised again to the raised position. It is determined whether or not the reciprocating movement is repeated n times (S8). The number n is changed according to the cleaning pattern set by the operator, as in the case of the expansion / contraction speed V described above.

  As a result, when it is determined that the first and second lifting cylinders 46a and 46b have already been reciprocated by the number n (S8: Yes), the number n of times specified by the cleaning pattern set by the operator. Since the reciprocating movement of the holding frame 3 has already been completed, that is, the cleaning of the object to be cleaned has been completed, the processing from S9 to S11 is performed to take out the basket 6 (object to be cleaned) from the holding frame 3. The cleaning driving process is terminated.

  That is, first, the drive of the first and second lifting / lowering cylinders 46a and 46b and the rotation motor 51 is stopped (S9), and the holding frame 3 is placed in the raised position. Next, the holding of the basket 6 is released by driving the first to fourth fixing cylinders 36a to 36d in the shortening direction and separating the contact member 39 from the cushioning material 62 (S10). The fourth opening / closing cylinders 35a to 35d are driven in the extending direction (S11), and the shutter 33 is opened. Thereby, the basket 6 can be taken out from the holding frame 3.

  Note that the holding frame 3 is disposed at the raised position in the processing of S1 to S3 (before the start of driving), and the reciprocating movement is performed an integer number of times (number of times n) (see S8), so the processing of S9 (cleaning) At the end), it is stopped at the ascending position. On the other hand, as described above, the rotation position of the holding frame 3 is different from the raising / lowering cycle when the holding frame 3 makes one reciprocation and the rotation cycle when making one rotation. Even if the shutter 33 faces directly upward at the start position in the process of step S9, there is a possibility that the shutter 33 does not face upward at the stop position in the process of step S9 and is shifted in the circumferential direction. Therefore, in this case, the rotation motor 51 is driven to rotate a predetermined number of times and the holding frame 3 is rotated, so that the rotation of the rotation motor 51 is stopped after the shutter 33 is directed directly upward ( S9).

  On the other hand, in the process of S8, when it is determined that the reciprocating drive of the first and second lifting cylinders 46a and 46b has not reached the number n (S8: No), the cleaning pattern set by the operator is Since the reciprocating movement of the holding frame 3 for the specified number of times n has not been completed yet, it is necessary to continue the reciprocating movement of the holding frame 3. The reciprocating movement (and rotation) is continued.

  As described above, the cleaning device 1 not only drives the holding frame 3 up and down in the cleaning water, but also performs the rotation drive at the same time as the up-and-down driving, so the conventional cleaning device cannot perform sufficient cleaning. The excess impregnating liquid can be almost completely washed away from the inside of the cap screw.

  In the flowchart of FIG. 8, the processing of S7 corresponds to the inverting means described in claim 5.

  The present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

  For example, in the above-described embodiment, the aluminum alloy cast part is described as an example of the cleaning object (object to be cleaned) of the cleaning apparatus 1, but the present invention is not limited to this, and products made of other materials are not necessarily limited thereto. Naturally, it is possible to make the object to be cleaned. Even in this case, the excess impregnating liquid can be cleaned and removed with high efficiency. In addition, as another material, materials, such as plating, cast iron, zinc, a sintered product, magnesium, are illustrated, for example.

  In the cleaning apparatus 1 of the above embodiment, the first and second lifting cylinders 46a and 46b and the rotating motor 51 are driven at the specified lifting speed V and rotating speed R, that is, at a constant speed. Although described (see S3), it is not necessarily limited to this, and the drive speeds of the first and second lifting cylinders 46a and 46b and the rotation motor 51 may be variable.

  For example, as the cleaning drive process proceeds, the drive speeds of the first and second lifting cylinders 46a and 46b and the rotation motor 51 are increased. As a result, the drive speed is set to be low immediately after the start of cleaning, so that the excess impregnation liquid can be reliably removed by washing, while the drive speed is increased as the excess impregnation liquid is cleaned and removed. The cleaning time can be shortened.

It is a figure which shows the cleaning apparatus in 1st Example of this invention, (a) is a top view of a cleaning apparatus, (b) is a front view of a cleaning apparatus. It is a side view of a washing | cleaning apparatus. (A) is a front view of a washing | cleaning apparatus, (b) is a side view of a washing | cleaning apparatus. It is a perspective view of a basket and a buffer material. (A) is a top view of a holding frame, (b) is a front view of a holding frame. (A) is a top view of a holding frame, (b) is a front view of a holding frame. It is the block diagram which showed the electric constitution of the washing | cleaning apparatus. It is a flowchart which shows a washing drive process.

1 Cleaning device 2 Cleaning tank 21 Bubbling device (bubble generating means)
3 Holding frame (holding means)
33 Shutter (shutter member)
35a to 35d 1st to 4th open / close cylinders (open / close drive means)
36a to 36d First to fourth fixing cylinders (extension / contraction drive means)
39 Contact member 4 Lifting device (lifting means)
41 Rotary joint (connecting member)
42 Lift plate (lift member)
43 Slide shaft (standing member)
45 Top plate (part of lifting member)
46a-46d 1st and 2nd raising / lowering cylinder (elevating actuator)
5 Rotating device (Rotating means)
51 Motor for rotation (rotary actuator)
52 Drive chain (chain member)
6 Basket (container)
62 Buffer material R1, R2 Direction of rotation of holding frame (holding means)

Claims (9)

A holding means for holding a container body in which an object to be cleaned is stored, a cleaning tank for storing cleaning water for cleaning the object to be cleaned, and an elevating means for driving the holding means up and down in the cleaning tank; In the cleaning apparatus for cleaning and removing the excess impregnating liquid adhering to the surface layer portion of the object to be cleaned, the casting product impregnated with the impregnating liquid for sealing the minute communication holes as the object to be cleaned,
A bubble generating means disposed near the bottom of the cleaning tank and generating bubbles in the cleaning water;
Rotation means for rotating the holding means,
The rotation of the holding means by the rotating means is performed simultaneously with the lifting and lowering movement by the lifting and lowering means while maintaining the rotation axis in a direction substantially orthogonal to the lifting and lowering direction by the lifting and lowering means .
The container body includes a bottom wall and a peripheral wall, and is configured in a substantially cylindrical shape with an upper surface open from the bottom wall and the peripheral wall, and stores the object to be cleaned when held by the holding means. Then, a buffer material is placed on the object to be cleaned, and the upper surface side is sealed with the buffer material,
The holding means includes an abutting portion and an expansion / contraction driving means for extending and retracting the abutting portion in a forward direction or a backward direction,
The container body is held by the holding means by extending the abutting portion in the advancing direction by the expansion / contraction driving means, and pressing the cushioning material toward the bottom wall side from the upper surface side of the container body by the abutting portion. While done by
Said release of the holding of the container body by the holding means, the person the contact portion is shortened to the reverse direction by the telescopic drive means, the Der Rukoto that performed by spacing the contact portion from said buffer material Characteristic cleaning device. The raising / lowering of the holding means by the raising / lowering means is repeatedly performed between the raised position and the lowered position,
The said ascending position is a position where at least a part of the container body held by the holding means is exposed above the liquid level of the cleaning water in the cleaning tank. Cleaning device.   3. The cleaning apparatus according to claim 2, wherein the ascending position is a position where the rotation axis of the holding means rotated by the rotating means is at least above the liquid level of the cleaning water in the cleaning tank. .   The cleaning apparatus according to claim 2 or 3, wherein the lowered position is a position where the entire container body held by the holding means is immersed in the cleaning water of the cleaning tank.   5. The apparatus according to claim 1, further comprising a reversing unit that reverses the rotation direction of the holding unit by the rotating unit from the normal rotation direction to the reverse rotation direction, or from the reverse rotation direction to the normal rotation direction. The cleaning device described.   6. The cleaning apparatus according to claim 5, wherein the reversal of the rotation direction of the holding unit by the reversing unit is performed every time the holding unit rotates approximately once.   The raising / lowering period when the holding means reciprocates once by the raising / lowering drive of the raising / lowering means and the rotation period when the holding means makes one rotation by the rotation driving of the rotating means are different from each other. The cleaning apparatus according to any one of claims 1 to 6. The holding means includes a placement surface portion on which the bottom wall side of the container body is placed, an entrance / exit surface portion provided opposite to the placement surface portion and having an opening for taking in and out the container body, and an entrance / exit surface portion thereof A shutter member provided at the opening of the first and second opening / closing drive means for driving the shutter member in the opening / closing direction,
The expansion / contraction driving means is provided on the shutter member. When the shutter member is closed, the contact portion is disposed at a position where the buffer member can be pressed, while the shutter member is opened. In the case, the cleaning device according to any one of claims 1 to 7 , wherein the contact portion is arranged at a position where the container body can be taken in and out from the opening. The elevating means includes an erecting member standing in the cleaning tank, an elevating member configured to elevate along the erecting member, and a connection for rotatably connecting the holding means to the elevating member. A member and a lift actuator for applying a lift drive force to the lift member,
The rotating means includes: a first gear member provided on a connecting member of the elevating means; a chain member connected on one side to the gear member; a second gear member connected on the other side of the chain member; A rotary actuator for applying a rotational driving force to the two gear members;
Cleaning apparatus according to any one of claims 1 to 8, characterized in that the rotary actuator is disposed on the lifting member of the lifting means.

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