JPH05255893A - Liquid treating conveyor - Google Patents

Abstract

PURPOSE:To simplify the structure of the entire conveyor, to reduce its setting space and to provide a liq. treating conveyor capable of easily coping with the change in the conveying line or the ascent and descent position in the conveyor for vertically moving a material to be treated to a liq. treating tank from a conveying line and oscillating the material. CONSTITUTION:Plural hanging means 30 such as a hoist for hanging a material A to be treated and a traveling line on which the hanging means 30 freely travel are provided, the traveling line consists of a traveling line 20 for treating, a return traveling line 22 and the movable traveling lines 24 and 25 reciprocating between both traveling lines on both ends of the lines 20 and 22, and moving means 50 and 60 for hanging elevation means such as a shuttle conveyor and a chain conveyor are respectively furnished to the treating traveling line and return traveling line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid processing transporting device, and more specifically, to a vehicle body or a coating line for electrical appliances, which is subjected to various treatments such as degreasing, rinsing, and electrodeposition coating. As in the case, the present invention relates to a carrier device used for carrying out a process using a liquid such as water on a material to be processed in the middle of this transportation path while transporting the material to be processed on a processing line.

[0002]

2. Description of the Related Art Conventionally, in a coating line for automobile bodies, various home appliances, steel furniture, etc., an object to be treated such as an automobile body is first subjected to pre-treatment such as degreasing, water washing or chemical conversion treatment. Next, a coating treatment such as electrodeposition coating is performed, and further, a cleaning treatment after the electrodeposition coating is performed, for example, a treatment of causing various liquids such as water to act on the surface of the object to be treated, that is, a liquid treatment.

Such liquid processing is performed by immersing the object to be processed in a liquid storage tank in which the liquid is stored, or spraying the liquid while surrounding the object to be processed with a wall. It is necessary to send the object to be processed into the space for this purpose, that is, the liquid processing tank. Since the liquid processing tank is provided at a position different from the transfer path of the object to be processed, the object to be processed is sent from the transfer path to the liquid processing tank, or the object to be processed after liquid processing is transferred from the liquid processing tank to the transfer path. A mechanism for returning to is needed.

Further, in the so-called dipping coating method such as the above-mentioned electrodeposition coating, depending on the shape of the object to be treated, it is not possible to perform sufficient treatment just by immersing the object in the treatment liquid of the liquid treatment tank. There are cases. This is because when a three-dimensional object to be processed is dipped in the processing liquid, an air pocket called an air pocket occurs inside the processing object, and the processing liquid cannot contact the processing object in this portion. For example, if such an air pocket is formed in the electrodeposition coating process, naturally, no coating is applied to this portion, and a coating failure occurs. Even when the liquid is applied to the object to be processed in a spray state as in spray coating, there are cases where the spray liquid cannot sufficiently reach the inside of the object to be processed depending on the arrangement of the spray gun.

In order to solve such a problem, it has been considered to rock the object to be processed in the liquid processing tank. When the object to be processed is swung, the air accumulated in the internal space easily escapes, so that the air pocket can be eliminated. Further, if the posture of the object to be processed changes, the spray liquid will reach a place where it could not reach before. Transfer of the object to be processed between the transfer path and the liquid processing tank as described above,
Further, as the transfer device capable of swinging the object to be processed in the liquid processing tank, a transfer device described below has been conventionally proposed in the above-mentioned coating line and the like.

Japanese Unexamined Patent Publication No. 1-172596 discloses a device using a hanger lift. That is, a plurality of processing tanks are installed below a transport path on which a conveyor or the like is laid, and a pair of hanger lift devices is installed for each processing tank. By moving the hanger containing the object to be processed from the transfer path to the hanger lift device and raising and lowering the pair of hanger lifts at the same time, the object to be processed can be sent to and lifted from the processing tank, and the pair of hanger lifts can be separately The object to be processed can be rocked by moving it up and down.

[0007] Another transport device is one in which a rail is laid along the transport path of the object to be processed, and a self-propelled hoist that travels on the rail is provided. The self-propelled hoist elevates and lowers an object to be processed, feeds it into a liquid processing tank installed below a transfer path, and takes out the object to be processed from the liquid processing tank. A traveling mechanism driven by a motor or the like is incorporated in the hoist, and the hoist can freely convey an object to be processed by traveling on a rail. Further, it has been considered that one object to be processed is suspended by a plurality of hoists, and the plurality of hoists are alternately moved up and down so that the object to be processed can be swung.

[0008]

However, the above-described conventional transporting device has a problem that the transporting device is complicated and large in size, and a large installation space is required. First, in a device using a self-propelled hoist, the hoist itself has a motor and a drive mechanism, so that the structure is complicated and the weight and volume are large. Since multiple self-propelled hoists are required for each workpiece, the self-propelled hoist and the rails or rails that suspend the hoist should be used for the entire transport route that handles multiple workpieces simultaneously. The support structure becomes very large. In addition, it is very difficult to control the traveling and raising / lowering operations of a plurality of self-propelled hoists, and control operation and management of operating states are troublesome.

Furthermore, since the self-propelled hoist that has moved to the end point of the transport route needs to be returned to the starting point again, it becomes a return route of the self-propelled hoist in addition to the forward rail along the transport route. It is necessary to install a return rail. The forward rail and the return rail must be configured as a continuous loop so that the self-propelled hoist can travel freely between the forward rail and the return rail. There is. As described above, a large-sized self-propelled hoist with a complicated structure is used, and moreover, a plurality of self-propelled hoists are integrated with respect to one object to be run on a loop-shaped rail. Widens the distance between the forward rail and the reverse rail so that the reciprocating self-propelled hoists do not collide with each other, and the curvature of the rails allows the drive wheels of the self-propelled hoist to smoothly turn. Must be quite large. In particular, at both ends of the forward rail and the backward rail, it is necessary to change the direction by 180 ° in order to transfer to each other rail, and the radius of curvature of the rail in this portion becomes very large. As a result, the installation area of the rail, that is, the area occupied by the carrier becomes very large, and the equipment cost and site cost of the whole carrier increases.

Further, in a device using a hanger lift,
It is necessary to fix and install a pair of hanger lifts outside the processing tank for each processing tank, which increases the installation cost of the hanger lift and increases the installation area. Further, if a hanger lift is installed adjacent to the processing tank, it will be an obstacle to installation of various equipments and pipes in the processing tank and work in the processing tank. Furthermore, the object to be processed can be raised and lowered only at the location where the hanger lift device is installed, and due to design changes and modifications of the processing line, the position of the processing tank may change, and the position where the object to be processed needs to be moved may change. However, it is not easy to deal with it, and installation work for the hanger lift device must be done one by one.

Therefore, as described above, an object of the present invention is to provide a transporting device which is capable of vertically moving an object to be processed from a transporting path to a liquid processing tank and swinging the object to be processed. It is an object of the present invention to provide a liquid processing transfer device which can have a simple structure, requires a small installation space, and can easily cope with changes in the transfer path or the vertical position.

[0012]

A liquid processing transport apparatus according to the present invention, which solves the above-mentioned problems, includes a liquid processing tank below a transport path for an object to be processed, and the liquid processing tank carries the object from the transport path. In the liquid processing transfer device, which is configured to be sent to the substrate to be processed by the liquid, and which has means for rocking the object to be processed, the object to be processed is shared and held, and each of them moves up and down independently. A plurality of suspension elevating means and a traveling path on which each suspending elevating means freely travels are provided, and the traveling path is a processing traveling path along the conveyance route of the object to be processed and a lateral side of the processing traveling path. A return traveling path, and a processing traveling path and a movable traveling path that reciprocates between the traveling paths at both ends of the returning traveling path.The processing traveling path and the returning traveling path are respectively , Equipped with moving means for hanging lifting means That.

The basic structure of the liquid processing transfer device is the same as that of the normal liquid processing transfer device as described in the above-mentioned prior art. That is, in the above-mentioned electrodeposition coating line, as in the case of sequentially performing degreasing, washing, and electrodeposition coating steps, a single or a plurality of liquid processing tanks required for each processing step are located below the conveyance route of the object to be processed. It is installed in. The object to be processed is sent to the lower liquid processing tank from the transportation path when performing necessary processing while moving on the transportation path, and when the processing in the liquid processing tank is completed,
The object to be processed is raised and returned to the transport path.

The liquid processing tank is a storage tank for storing the processing liquid,
If the object to be treated is treated with the liquid in a fixed space such as a spray booth equipped with a spraying device, the specific structure and the content of the treatment performed therein can be freely set. Processing steps other than the liquid processing step, such as a drying step and a heating step, can be incorporated in the transfer path. Similar to the liquid processing step, these processing steps may be carried out after the object to be processed is moved to the lower part of the transfer path by using the lifting / lowering means, and it should not be an obstacle to the transfer or the processing. For example, the processing may be performed on the transport route as it is.

According to the present invention, as a means for holding the object to be processed, a plurality of suspending and elevating means for sharing and holding the four corners of the object to be processed are provided. The object to be processed may be directly held by the lifting / lowering means, or the holding member may be held by the lifting / lowering means in a state where the object to be processed is accommodated in a holding member such as a carrier, a carrier hanger, or a carrier basket. You may make it hold | maintain. As the suspending and elevating means, a wire or an arm that detachably holds an object to be processed or a holding member thereof is attached by a drive mechanism such as a motor so as to be able to move up and down, and a so-called hoist structure can be applied.

In order to stably hold the object to be processed or to facilitate the rocking operation, it is preferable to hold the four corners of the object to be processed by suspending and elevating means. .. However, depending on the shape and structure of the object to be processed, it is possible to hold the object to be processed at locations other than the four corners, or to share the object to be processed at three locations or at five or more locations. The suspension elevating means is attached so as to freely travel along the traveling path. As long as the traveling path has a structure capable of movably supporting the suspending / lowering means, such as a traveling rail made of H-shaped steel, the same structure as that of the traveling path in various kinds of conveyors can be adopted. The suspending / lowering means is supported on the traveling path via wheels and the like, and can freely travel on the traveling path. Instead of wheels, a sliding mechanism that uses rollers or balls, or a sliding support mechanism that uses magnetism or fluid,
It may be supported so that it can travel. However, the suspension elevating means itself is not provided with a motor or other driving mechanism for moving the suspension elevating means. That is, the free running means that it is attached to the running path in a state in which it can be run by applying an external force to the suspension elevating means.

The plurality of hoisting and lowering means may be configured such that all the hoisting and hoisting means are integrally connected so that they are always moved simultaneously. The lifting / lowering means may be divided so that they can be moved separately, or the individual hanging / lowering means can be moved separately.

The traveling path is provided with a processing traveling path and a return traveling path. The processing traveling path is provided along the transportation path of the object to be processed, and is used when the objects to be processed held by the suspending / lowering means are sequentially fed into each liquid processing tank. The return traveling path is installed on the side of the processing traveling path, and is used to return the suspending / lowering means that has finished carrying the object to be processed to the starting point side of the carrying path.

In the processing traveling path, a pair of traveling rails are arranged in parallel, and the lifting and lowering means is caused to travel on each traveling rail, so that the object to be processed can be attached to the left and right traveling rails. It can be stably held by the hanging lifting means. The processing traveling path can be formed to have an arbitrary length and route according to the arrangement of the liquid processing tank, the arrangement of the processing equipment in each processing step, and the procedure of the processing operation. There may be a curved portion or an inclined portion in a part of the processing road.

In the case where the processing traveling path is composed of a pair of parallel traveling paths, the returning traveling path may be provided on both sides of the left and right processing traveling paths, respectively. If both ends of the return road are located close to both ends of the processing road, it should be separated from the processing road or take another route in the middle. Good.

The movable traveling path is provided at both ends of the processing traveling path and the returning traveling path, and one end of the movable traveling path is
Reciprocating operation between the state where it is placed at the end of the processing runway and the state where it is placed at the end of the return runway adjacent to the processing runway, with the lifting / lowering means attached. It is supposed to do. If the ends of the processing runway and the return runway are parallel to each other, move the movable runway in parallel and place them at the ends of both runways, because the operating mechanism is simple and the installation space is small. It is preferable because it is not. However, the movable traveling path may be turned so as to be arranged at the end portions of both traveling paths. As the reciprocating operation means of the movable traveling path, a reciprocating operation device in an ordinary mechanical device such as a pinion gear mechanism driven by a motor, a crank mechanism, or a cylinder mechanism can be used.

As the moving means of the suspending / lowering means provided on the processing traveling path and the returning traveling path, the usual moving means employed in various known conveying devices can be applied. Specifically, it is preferable to use a shuttle conveyor, a chain conveyor, or the like, which can simultaneously feed a large number of hanging lifting / lowering means attached to a traveling path in a fixed direction. The moving means starts the movement toward the processing traveling path or the returning traveling path from the stage where the suspension elevating means is on the movable traveling path, and the movable traveling path on the opposite side from the processing traveling path and the returning traveling path. Stop the movement at the stage of moving to. Therefore, the moving means is arranged so that the start of the transmission of the driving force to the suspension elevating means can be released at both end positions. Since the moving means may operate independently on the processing traveling path and the returning traveling path, it is possible to employ moving means having different structures on the respective traveling paths. Specifically, the moving means on the processing travel path is configured to be able to perform intermittent movement control in which movement between the liquid treatment tanks and stop at the position of the liquid treatment tank are alternately repeated. On the return traveling path, the suspension elevating means may be quickly returned to the starting point of the transportation path, and therefore intermittent movement control is not necessary.

In order to raise and lower the suspending and raising means,
It is necessary to supply power from the outside, for example, by supplying power to the motor mounted on the suspending / lowering means. Power supply means, for example, a power supply line, may be continuously installed over the entire length of the processing runway, but power is supplied only when the suspension elevating means comes to a predetermined position such as a liquid processing tank. As described above, if the power supply means, for example, the power supply point is provided only in a necessary place, the power supply equipment becomes simple and maintenance is easy. Further, the lifting operation of the suspension elevating means may be controlled by an operation panel or a switch provided for each suspension elevating means, but it is possible to supply power to a plurality of suspension elevating means and control the elevating position. If the control means such as a central control unit installed in a place different from the processing runway collectively performs the operations, the operation control of the entire transfer line can be performed efficiently and safely.

[0024]

When a plurality of suspending / elevating means are simultaneously raised / lowered, the suspending / sustaining means can hold the workpiece to be processed, and the suspending / lowering means can independently raise and lower the workpiece. , The object to be processed moves up and down in a stable state,
When raising and lowering multiple suspension lifting means separately,
The posture of the object to be processed is tilted, and so-called rocking can be performed.

As described above, the plurality of suspension elevating means for sharing and holding the object to be processed moves from the starting point to the end point along the conveying path, and the suspending and conveying means reaching the end point is again moved. Must be sent back to the starting point for use. According to the present invention, as the traveling path of the suspending / lowering means, a traveling path for processing and a traveling path for returning are separately provided, instead of providing a loop-shaped traveling path as in a conventional transfer device. The reciprocating movable traveling path connects the vehicle and the return traveling path. As a result, it suffices if there is a space at both ends of the traveling path for the short movable traveling path to reciprocate, so that the installation area of the traveling path can be significantly reduced.

Further, in the present invention, the suspension elevating means itself is not provided with a self-propelled means such as a drive motor for traveling, but a moving means is provided in each of the processing traveling path and the returning traveling path. Therefore, the structure of the suspension elevating means is simplified, and the control and management of the moving means are facilitated. If the structure of the lifting / lowering means is simplified and the outer shape is small and the weight is light, the burden on the traveling path is reduced and a simple structure is sufficient. It is necessary to provide a sufficient distance between the processing travel path and the return travel path so that the hanging lifting means that travel on each other do not collide with each other. The space between the processing runway and the return runway can be made narrower, and the installation space for the entire runway can be reduced. Suspending The lifting and lowering means need to be moved intermittently, and the return travel path, which does not need to move and requires rapid movement, adopts suitable moving means for hanging. It is also possible to operate the lifting means in an optimum state.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows the overall structure of the carrier device. A plurality of liquid processing tanks 10 are installed side by side, and the objects A to be processed are sequentially fed into these liquid processing tanks 10 to perform various kinds of processing. A processing rail 20 serving as a processing traveling path is laid above the liquid processing tank 10. The processing rail 20 is provided with a hoist 30, which is a suspension elevating means. The two hoists 30, 30 arranged side by side along the processing rail 20 are connected to each other by the connecting member 33.
Are connected together. The carrier 40 is suspended from the hoist connection body 3, and the object A to be processed is placed on the carrier 40. By raising and lowering the carrier 40 with the hoist 30, the workpiece A remains the carrier 40,
The liquid processing tank 10 is lowered or pulled up.

FIG. 1 shows the structure of the entire movement path of the hoist 30. A pair of processing rails 20, 20 formed of H-shaped steel are installed in parallel at regular intervals,
Each of the processing rails 20 has a pair of front and rear hoists 3
A hoist connector 3 consisting of 0 and 30 is attached. Each hoist 30 is suspended on the processing rail 20 by freely rotating wheels 32, and can be freely moved along the processing rail 20 by applying an external force to the hoist 30 or the hoist connection body 3 to move the hoist 30. Note that the individual hoists 30 may not be connected to each other, and external forces may be applied separately to move them simultaneously.

The hoist connecting bodies 3 are attached to the left and right processing rails 20, respectively, and a total of four hoists 30 are provided.
Each of the hanging hooks 31 hangs the hanging wires 41 attached to the four corners of the carrier 40.
That is, one object A to be processed is provided with four hoists 30.
It means that they are sharing and holding. By moving the two hoist connection bodies 3 along the respective processing rails 20, the transfer table 40 and the processing object A are transferred. Four
Similarly, if the hanging hook 31 is moved up and down by the hoist 30 of the table, the transfer table 40 and the object to be processed A can be moved up and down in a parallel state. However, if the front and rear or left and right hoists 30 are moved up and down only one way or in the opposite directions, and the height of the hanging hook 31 is changed depending on the location, the carrier 40 and the workpiece A are inclined. It will be. Therefore, by controlling the elevation heights of the four hoists 40 and alternately changing the inclination directions of the carrier 40 and the object A to be processed, the object A can be swung in an arbitrary pattern.

Outside the pair of processing rails 20, a return rail 2 is provided, which is a return traveling path with a space therebetween.
2, 22 are provided. It suffices that the return rail 22 and the processing rail 20 be spaced apart from each other so that the hoist connection bodies 3 passing through the adjacent rails 20 and 22 do not come into contact with each other. Processing rail 20 and return rail 2
2 are linear and are provided in parallel with each other.

Movable rails 24 and 25, which are movable traveling paths, are provided at both ends of the processing rails 20 and 20 and the return rails 22 and 22, respectively. Movable rails 24, 25
Is a relatively short rail that is slightly longer than the wheel spacing of the hoist connection body 3. The movable rails 24, 25 are movable from one end of the movable rails 24, 25 to the return rail 20 to a position at which one end of the movable rails 24, 25 is connected.
A reciprocating mechanism including a motor and a rack and pinion is incorporated so that the whole 5 can be moved in parallel. The hoist connection body 3 moved to the end of the processing rail 20,
After the movable rail 25 is moved to the movable rail 25 connected to the processing rail 20, the movable rail 25 is connected to the return rail 22 to move the hoist connection body 3 to the return rail 22.
Can be transferred to. The transfer of the hoist connection body 3 from the return rail 22 to the processing rail 20 can be similarly performed using the movable rail 24. Movable rails 24, 2
The specific structure of the mechanism for reciprocating 5 is similar to that of a device generally called a traverser.

The hoist connecting body 3 conveys the object A to be processed from the upstream side to the downstream side of the processing line. In FIG.
While the processing rail 20 is moved in a fixed direction (solid arrow direction), the return rail 22 is moved in a fixed direction (dotted arrow direction) opposite to this. Next,
A mechanism for moving the hoist connecting body 3 in a certain direction by the processing rail 20 or the return rail 22 will be described.

The processing rail 20 is equipped with a shuttle conveyor. Specifically, the left and right processing rails 20,
A strip rail 50 having a length up to the processing rail 20 and movable rails 24 and 25 at both ends is installed between the rails 20. As shown in FIG. 5, this shuttle 50 is driven by a motor 56 and a rack and pinion mechanism 55, and reciprocates in the horizontal direction. This shuttle shuttle 5
A large number of pusher claws 51 are attached to both side ends of 0, and the pusher claws 51 push the pushing pieces 36 formed in a part of the hoist connecting body 3 to move the hoist connecting body 3. The pair of hoist connecting bodies 3 attached to the left and right processing rails 20, 20 move in perfect synchronization.

FIG. 3 shows the relationship between the pusher claw 51 and the pushing piece 36. The hoist 30 includes wheels 32, 32 that sandwich the processing rail 20 made of H-shaped steel from both sides and run on the lower sap material for rotation, and guide rollers 37, 37 that abut and guide both ends of the lower sap material. In addition to the above, a rod-shaped pushing piece 36 protruding to both sides is provided. The shuttle 5 is provided at a position adjacent to the pushing piece 36.
Zero pusher claws 51 are arranged.

As shown in detail in FIG. 4, the pusher claw 5
1 is attached so as to be rotatable around a shaft fulcrum 52. A cylinder 53 that is operated by pneumatic pressure or hydraulic pressure is installed on the side surface of the shuttle 50. This cylinder 5
The tip of the piston 3 which can move back and forth is rotatably connected to the upper end of the pusher claw 51. The cylinder 53 itself has a rear end portion rotatably attached to the side surface of the shuttle 50. The lower end of the pusher claw 51 projects downward of the shuttle 50 and is arranged at a position where it abuts on the pushing claw 36 of the hoist 30. Therefore, in this state, if the shuttle 50 operates in the direction of the solid white arrow in FIG. 4, the pusher claw 51 of the shuttle 50
The pushing claw 36 of the hoist 30 is pushed, and the hoist connecting body 3 moves.

After the hoist connecting body 3 has moved a certain distance, the shuttle 50 operates in the direction of the white dotted arrow in FIG. 4 and returns to its original position. At this time, if the cylinder 53 is operated and the piston is extended, the pusher claw 51
Turns and the lower end of the pusher claw 51 jumps upward, and the state shown by the chain double-dashed line in FIG. 4 is obtained. In this state,
Even if the pusher claw 51 passes through the position of the pushing claw 36 of the hoist 30, it does not collide with the pushing claw 36, the return operation of the shuttle 50 can be performed smoothly, and the hoist 30 is returned. Nor.

When the shuttle 50 is reciprocated in this manner, the hoist connecting body 3 is intermittently moved along the processing rail 20 by a constant distance. If the movement distance of one cycle by the shuttle 50 is set to the interval from one liquid processing tank 10 to the next liquid processing tank 10, the position of each liquid processing tank 10 is moved every time the hoist connection body 3 moves. Will be transported to. Of course, the hoist connection body 3 may be set to move to the adjacent liquid treatment tank 10 by the operation of the shuttle 50 in a plurality of cycles.

In the above embodiment, the pusher claws 51 are operated by the cylinders 53 provided in the respective pusher claws 51. However, a plurality of pusher claws 51 are combined into one by combining various link mechanisms and gear mechanisms. It can also be activated. Next, FIG. 6 shows the return rail 22.
In, the mechanism which moves the hoist connection body 3 is shown. Note that the processing rail 20 is not shown for the sake of clarity.

A chain conveyor 60 that rotates endlessly is installed above the left and right return rails 22 and the movable rails 24 and 25. A pusher bar 62 protruding downward is attached to the chain conveyor 60.
The pusher bar 62 comes into contact with the pushing claw 36 attached to a part of the hoist connecting body 3 to push and move the pushing claw 36 and the hoist connecting body 3 along the return rail 22. .. Since only the pusher rods 62 projecting downward are attached to the chain conveyor 60, the curvature of the direction changing portions at both ends and the width of the entire loop can be narrowed.
There is no concern that 0 will overhang outside the return rail 22. Further, if the loop of the chain conveyor 60 is set in the vertical direction or is set inside the return rail 22, it is possible to prevent the loop out of the return rail 22 at all.

It should be noted that the movement of the hoist connecting body 3 on the above-mentioned processing rail 20 needs to be moved intermittently for each processing step. However, on the returning rail 22, the hoist connecting body 3 is quickly moved to the processing start side. Since it is preferable to move the hoist connection body 3 to the chain conveyor 60,
May be continuously moved from the movable rail 25 to the movable rail 24 on the opposite side via the return rail 22. With this configuration, the hoist connection bodies 3 are not retained on the return rail 22, and the number of the hoist connection bodies 3 installed in one transport line can be reduced.

The operation of the transfer device having the above-described structure will be described. At the left side position in FIG. 2, the left and right hoist coupling bodies 3 and 3 are arranged on the respective processing rails 20 and 20, and the four corners of the carriage 40 are hung on the hoists 30 and the hoist 30 is placed on the carriage 40. A to-be-processed object A is mounted on. The shuttle 50 is reciprocally operated to intermittently move the hoist connection body 3. Hoist connection body 3, that is, object A to be processed
However, when it comes above the liquid processing tank 10, the operation of the shuttle 50 is stopped and each hoist 30 is operated at the same time,
The processing object A is lowered into the liquid processing tank 10. Processing object A
In the liquid treatment tank 10, each is subjected to an appropriate treatment. At this time, of the four hoists 30, only the hoist 30 of the hoist connecting body 3 on one side is slightly moved up or down,
In each hoist connecting body 3, the front and rear hoists 30, 30 are moved up and down in a certain range in the opposite direction to swing the carrier table 40 and the workpiece A.

When the processing in each of the liquid processing tanks 10 is completed, the hoists 30 are operated to make the carrier 40 and the object A to be horizontal, and then the hoists 30 are simultaneously raised to perform the liquid processing. The object A to be processed is pulled up from the tank 10. In addition, during or after the to-be-processed object A is being pulled up from the liquid processing tank 10, the above-mentioned hoist 30 ...
It is also possible to accelerate the discharge of the processing liquid accumulated inside. After that, the shuttle 50 is operated again to move the hoist connection body 3 to the position above the next liquid processing tank 10. By repeating such an operation, the object A to be processed is subjected to a predetermined process in each liquid processing tank 10.

After the predetermined processing steps are completed, the object A to be processed and the carrier 40 are removed from the four hoists 30 so that the left and right hoist coupling bodies 3 can be handled separately. Then, as shown in the right end of FIG. 1, the movable rail 25 is moved from the position of the processing rail 20 to the position of the return rail 22 in a state where the hoist connection body 3 is moved to the left and right movable rails 25.

The hoist connecting body 3 mounted on the movable rail 24 moved to the position of the return rail 22 is mounted on the movable rail 24 on the opposite side from the movable rail 25 via the return rail 22 by the operation of the chain conveyor 60. It is moved to the state. In the hoist connecting body 3 mounted on the movable rail 24, the movable rail 24 is the processing rail 20.
After moving to the position of
It is fed again to the processing rail 20. When the hoist connection bodies 3 are aligned with the left and right processing rails 20, a series of liquid processing steps are performed from the suspension mounting of the carrier 40 and the object A to be processed, as described above.

[0045]

As described above, according to the liquid processing transporting apparatus of the present invention, the traveling path of the suspending / lowering means is
By dividing it into a processing runway and a return runway and connecting the movable runway back and forth between them, the running path occupies a small area, and the entire transport device can be made smaller or the installation space can be reduced. Can be planned.

Further, since the suspension elevating means itself is not provided with a drive mechanism, the structure of the suspending elevating means becomes simple and compact, and the structure of the traveling path can be simplified accordingly. Moreover, if the suspending / lowering means is small and lightweight, the movable traveling path can be small, and the reciprocating drive thereof can be facilitated. Since it is possible to simultaneously control the movement of a large number of hanging lifting means simply by driving and controlling the moving means of each of the processing runway or the return runway, compared to providing a drive mechanism for each hanging lift way. The drive control can be performed much more efficiently, and the central control means can easily perform the centralized management control.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of a traveling road in an embodiment of the present invention.

FIG. 2 is a side view showing the entire transport device.

FIG. 3 is an enlarged cross-sectional view of a main portion showing a related portion between a hoist and a shuttle conveyor.

FIG. 4 is a schematic explanatory view showing an operating mechanism of a shuttle conveyor.

FIG. 5 is a schematic side view showing a drive mechanism of a shuttle conveyor.

FIG. 6 is a schematic perspective view showing an operating mechanism of a hoist in the return rail.

[Explanation of symbols]

 A Processing object 20 Processing rail 22 Return rail 24 Movable rail 30 Hoist (suspending lifting means)

Claims (2)

[Claims] 1. A liquid processing tank is provided below a transfer path of an object to be processed, the object is sent from the transfer path to the liquid processing tank to be processed by a liquid, and the object is rocked. In the liquid processing transporting device including means for holding, a plurality of hanging lifting means for sharing and holding an object to be processed, each lifting and lowering independently, and a traveling path in which each hanging lifting means travels freely. This traveling path is provided with a processing traveling path along the conveyance route of the object to be processed, a return traveling path installed on the side of the processing traveling path, and both ends of the processing traveling path and the returning traveling path. It consists of a movable travel path that reciprocates between both travel paths, and the processing travel path and the return travel path are
A liquid processing transport device, characterized in that each of them is provided with a moving means for suspending and elevating means. 2. The liquid processing transport apparatus according to claim 1, wherein a plurality of sets of suspension elevating means are provided in a transportation path of the object to be treated, and a central control for collectively controlling the operation of the plurality of suspension elevating means. A liquid processing transporting device comprising a means.