JP3071686B2 - Method and apparatus for applying coating material to ring-shaped metal parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for applying a coating material such as an adhesive or a paint to a ring- shaped metal part.

[0002]

2. Description of the Related Art In a cylindrical vibration-isolating bush used for a suspension mechanism of an automobile, for example, a relatively short hollow cylindrical (ring-shaped) metal part is generally embedded in a rubber body. It is firmly vulcanized and adhered to the material. For the vulcanization bonding between the metal component and the rubber material, it is necessary to coat the entire surface of the ring- shaped metal component with an adhesive in advance.

[0003] The adhesive must be coated uniformly on the inner and outer peripheral surfaces of the ring- shaped metal part. Therefore, a method of applying the adhesive by spraying is generally employed. For example, a plurality of metal parts are placed on a wire mesh-shaped support table moved by a conveyor with the center axis of the cylinder oriented vertically, and passed through the support table to a coating chamber equipped with a plurality of spray guns. By doing so, coating is performed. Then, the adhesive is dried by passing through a drying furnace following the application chamber, and the metal part is turned over to apply and dry the adhesive. In addition, since this kind of adhesive generally has a two-liquid configuration including a primer and an adhesive liquid, application and drying by spraying are actually performed four times in total.

There have also been proposed various so-called dipping methods in which a ring- shaped metal component is immersed in a liquid of an adhesive, the adhesive is adhered to the surface of the ring- shaped metal component, and then pulled up and dried. For example, in Japanese Patent Application Laid-Open No. 5-131165, after the entire cylindrical metal part is sunk together with the jig in the liquid tank for the adhesive, and the adhesive is adhered to the entire metal part,
There is disclosed a dipping method in which the excess liquid is shaken off by centrifugal force while being gripped one by one by a rotating chuck and rotated at a high speed, and compressed air is blown from an air injection nozzle to remove a pool of adhesive. ing.

[0005]

The method of spraying the adhesive by spraying as described above has the advantage that the thickness of the adhesive layer formed on the surface of the metal part can be uniformly obtained, but the sprayed adhesive is advantageous. Since only a small part of the adhesive adheres to the metal parts, there is a disadvantage that the adhesive is wasted very much.

In the latter method of dipping, since the metal parts together with the jig must be submerged in the liquid tank, the adhesive always adheres to the jig and the jig is contaminated. There is a drawback that the adhesive adhered to the tool hardens and causes various troubles. In addition, if the metal parts are rotated one by one, the working efficiency is poor, and it is difficult to process a large number of parts in a short time.

SUMMARY OF THE INVENTION It is an object of the present invention to efficiently apply a large number of metal parts without wasting coating materials such as an adhesive due to dipping. It is another object of the present invention to apply the coating uniformly over the entire circumference of the metal component.

[0008]

According to a method of applying a coating material to a ring- shaped metal part of the present invention, a plurality of ring- shaped metal parts made of a magnetic material are placed on the outer peripheral surface of a cylinder as a supported surface.
Then, a component supply step of adsorbing a jig provided with magnets on the support surface and aligning and holding the respective metal components in a state of being separated from each other, and a posture in which the metal components hang down from the jig. Immersed in a liquid tank containing a liquid coating material so that the liquid level covers a range of approximately 180 ° of each of the metal parts, and coats the surface including the inner and outer peripheral surfaces in the range.
A first dipping step of applying a material, a first drying step of drying a coating material adhered to the metal component, and inversion in which each dried metal component is turned 180 ° with respect to a jig. a step, as the posture of the metal component is downwardly depending from the jig, the liquid bath pooled coating material liquid, substantially the liquid surface of the respective metal part 18
By dipping so as to cover the 0 DEG the inner peripheral surface of the range
A second dipping step of applying a coating material to a surface including the metal component, and a second drying step of drying the coating material attached to the metal component.

That is, a plurality of ring- shaped metal parts are
In the first dipping step, first half, ie, 18
It is applied in the range of 0 °. And after drying, 180
さ れ It is turned upside down and the other half is applied in a second dipping step. In each dipping step, since the jig is located above the metal component, the coating liquid does not adhere to the jig.

[0010] In the coating method according to claim 2, the method further comprises:
The jig pulled up from the coating material tank is tilted for a predetermined time so that the center axis of the ring- shaped metal part is tilted, and the metal parts that have gone through this liquid draining step are in a dipping posture. A swinging step of swinging the jig so as to assume a posture relatively rotated with respect to the first dipping step and the first drying step;
Between the dipping step and the second drying step.

That is, if the ring- shaped metal part is pulled up from the liquid tank and kept in a horizontal state, excess liquid tends to accumulate in the lower part. In the liquid draining step, excess liquid is removed by tilting the metal component. In the swing step, along with the swinging of the jig, Li
Because ring-shaped metal parts, so that the relative rotation,
The liquid adhered in the range of 180 ° spreads smoothly on both sides.
This makes the boundary between the coating layer formed by the first dipping and drying step and the coating layer formed by the second dipping and drying step unclear. In other words, even at the boundary portion, it is evenly and uniformly applied.

In the coating method according to a third aspect of the present invention, the reversing step comprises: adsorbing the second jig to the metal component from a direction different by 180 ° from the first jig holding the metal component. , By pulling the metal component away from the first jig. In other words, the first jig moves to the second jig while a large number of metal parts are aligned, and the attitude of the jig changes by 180 °.

In order to realize the above-mentioned coating method,
The coating apparatus according to the present invention includes a plurality of phosphors made of a magnetic material.
The grayed-shaped metal part, the cylindrical outer peripheral surface as the supporting surface, to align held in a state separated from each other, and jig magnets are arranged at appropriate intervals on the support surface, the metal parts in this jig And a component supply unit for successively supplying and sucking and holding the jig in a posture in which the metal component hangs down from the jig and holding the jig in a liquid tank in which a liquid coating material is stored. Is immersed so as to cover a range of approximately 180 ° of each of the above metal parts, and is coated on the surface including the inner and outer peripheral surfaces in the range.
A first dipping unit for applying a mating material ;
A first drying unit for drying the coating material adhered to the metal component, a reversing unit for reversing the dried metal component by 180 ° with respect to the jig,
The jig is held in a posture in which the metal part hangs down from the jig, and the liquid surface in a liquid tank storing a liquid coating material covers a range of approximately 180 ° of each metal part. So that the surface including the inner and outer peripheral surfaces
A second dipping unit for applying the coating material, a second drying unit for drying the coating material adhered to the metal component, and a discharge unit for removing the metal component from the jig conveyed from the second drying unit And

Further, in the coating apparatus of the present invention, the first dipping unit and the second dipping unit are integrated as one dipping unit for dipping the jigs in the respective steps in parallel. ing. Further, the first drying unit and the second drying unit are integrated as one drying unit that performs a drying process on the jig in each step in parallel.

That is, the step of applying the first half and the step of applying the other half are processed in parallel in a substantially integrated dipping unit and drying unit. Therefore, each metal part is
It passes twice through the dipping unit and the drying unit.

According to a sixth aspect of the present invention, the reversing unit includes a chuck mechanism for holding an empty second jig, and a first jig holding a metal component from the first drying unit. Transport means for combining the two jigs from different directions with a component interposed therebetween, a rotation drive mechanism for rotating the combined jigs by 180 °, and a state in which the first jig is held by the chuck mechanism And an eject mechanism for projecting the metal component from the first jig toward the second jig. In other words, the first jig moves to the second jig while a large number of metal parts are aligned, and the attitude of the jig changes by 180 °. Then, the first jig is held by the chuck mechanism in an empty state, and a new jig holding the next metal component is awaited.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a process explanatory view showing an overall processing flow of a coating method according to the present invention, and FIG. 2 shows a jig 1 used in this method. This embodiment is made of a magnetic material embedded inside the rubber body of the vibration isolating bush.
An adhesive is applied to a ring- shaped metal component (hereinafter, referred to as a work) 2. The work 2 has a cylindrical shape with a short axial length.

As shown in FIG. 2, the jig 1 is formed by forming a pair of support surfaces 1a, 1a by recessing the lower surface of an elongated rectangular member into an obtuse V-shape. Hanger 3 is attached. Both ends of the hanger 3 protrude from both end surfaces of a rectangular member having the support surface 1a. Further, a plurality of permanent magnets 4 for holding the work 2 are provided on each of the support surfaces 1a, 1a. This permanent magnet 4 is a pair of two permanent magnets at symmetric positions of the support surfaces 1a, 1a and holds one work 2. In this example, ten permanent works 2 are held. , 10 sets of magnets 4 are arranged. The distance between the magnets 4 along the longitudinal direction of the jig 1 is larger than the axial length of the work 2, and therefore, a certain gap is provided between each of the ten works 2 attracted to the magnet 4. Is secured. The central axes of the cylindrical workpieces 2 are coaxial with each other and parallel to the hanger 3. In addition,
As described later, in order to project the work 2 from the jig 1 in the reversing step, the width of the jig 1 is set to the target work 2.
Is set to be smaller than the outside diameter.

In the process explanatory view of FIG. 1, a process indicated by reference numeral A is a process of supplying the work 2, and ten short cylindrical works 2 are attached to each jig 1. The jig 1 proceeds to a dipping process indicated by reference numeral B, and is dipped only in the lower half of the work 2 into a liquid tank 5 storing a liquid adhesive. More specifically, the work 2 is in a posture of hanging down from the jig 1, and is immersed in the liquid tank 5 to a height position where the liquid surface reaches a range of approximately 180 ° of the work 2. In the liquid tank 5, the liquid level, the temperature, and the viscosity are controlled. Next, as a liquid draining step C, the jig 1 pulled up from the liquid tank 5 is tilted so that the center axis of the work 2 is tilted, and after a certain period of time, returned to the horizontal state again. This is performed for 10 seconds at an angle of, for example, 45 °. As a result, excess liquid flows down from the work 2.

After returning the jig 1 to the horizontal state, the process proceeds to a swing step D. In this swing process, the hanger 3
The jig 1 swings largely right and left around the center. Thereby, the work 2 revolves along the rotation locus 6 in FIG. 1. However, since each work 2 is fixed to the jig 1, the posture of each work 2 itself during dipping is The posture is relatively rotated with respect to the posture. As a result, the adhesive that has adhered to the work 2 within a range of 180 ° spreads right and left, and makes the boundary unclear. In addition, as a specific example, it swings 180 degrees left and right around the hanger 3 for each 4 seconds and makes two reciprocations.

After the swing process D, the process proceeds to the drying process E,
Here, the work 2 is dried with hot air. After drying, cool to near normal temperature.

Next, the process proceeds to a reversing step F. In this reversing step, each work 2 is set in a posture of being flipped 180 ° with respect to the jig 1. The code F1 indicates the state immediately before the inversion by the code F2.
Shows the state after the reversal, respectively, the jig 1 holding the work 2 at the time of the process F1, that is, the first jig 1
The work 2 is reversed by transferring the work 2 from a to a second jig 1b different from this. Specifically, the second jig 1b is attracted to each work 2 from a direction different by 180 ° from the first jig 1a holding the work 2. Then, the work 2 is simultaneously projected from the first jig 1a side to the second jig 1b, and is separated from the first jig 1a. Thereby, a plurality of, that is, ten, works 2 can be simultaneously reversed without requiring an individual chucking operation.

The reversed work 2 proceeds to the dipping step B again, and an adhesive is applied to the remaining 180 ° portion in exactly the same manner as in the previous step. Then, the liquid is uniformly applied through a liquid removal step C and a swing step D, and then dried and cooled in a drying step E.

In this way, as shown by the symbol G, 1
Since the application of the adhesive to all the zero works 2 is completed, the process proceeds to step H, where the works 2 are removed from the jig 1 and discharged. The jig 1 that has become empty is again
The work 2 is returned to the supply step A.

As described above, the dipping step B, the draining step C, the swing step D, and the drying step E
Since there is no particular difference between the first step and the second step, it is possible to perform the processing twice in substantially the same unit. Needless to say, the first processing and the second processing can be performed by units located at completely different positions, if necessary in terms of processing speed, layout, and the like.

FIGS. 3 to 6 show one embodiment of a specific adhesive application apparatus for realizing the above-described steps. Here, as the adhesive, a two-liquid composition composed of a primer liquid and an adhesive liquid is used. Therefore, this apparatus includes a primer coating apparatus 21 for coating the primer on the entire circumference of the work 2 and a primer coating apparatus 21 for coating the primer. And an adhesive liquid application device 22 for applying an adhesive liquid to the entire circumference of the work 2 thus completed. Except that the work supply unit 11 is provided on the primer application device 21 side and the work discharge unit 18 is provided on the adhesive liquid application device 22 side, the two application devices 21 and 22 have basically the same configuration. It is.

The primer coating device 21 includes a work supply unit 11 for sequentially supplying the work 2 to the jig 1, a dipping unit 12 for attaching the primer to the work 2 in a range of approximately 180 °, and a drying unit for drying the applied primer. The jig 1 is provided with a drying unit 13 for performing the drying, and a reversing unit 14 for reversing the work 2 on which the half application is completed with respect to the jig 1. The dipping unit 12, the drying unit 13, and the reversing unit 14 are arranged adjacent to each other so that the jig 1 is caused to flow in a loop.

The adhesive liquid application device 22 applies approximately 1
A dipping unit 15 for applying the adhesive liquid in a range of 80 °, a drying unit 16 for drying the applied adhesive liquid, and a jig 1
A work reversing unit 17 for reversing the work 2 and a work discharge unit 18 for removing the work 2 on which the adhesive liquid is completely applied from the jig 1 and discharging the work 2. The dipping unit 15, the drying unit 16, and the reversing unit 17 are arranged adjacent to each other so that the jig 1 is also flowed in a loop.

A transport device 19 is provided between the drying unit 13 of the primer coating device 21 and the dipping unit 15 of the adhesive liquid coating device 22 to transport the jig 1 after the primer processing. . The transport device 19 also transports the jig 1 from the drying unit 13 on the primer side to the reversing unit 14 and transports the jig 1 from the reversing unit 17 on the adhesive liquid side to the dipping unit 15.

In order to return the empty jig 1 from the work discharge unit 18 of the adhesive liquid application device 22 to the work supply unit 11 of the primer application device 21, a transfer device 20 is provided between the two. The transfer device 20 transfers the jig 1 from the work supply unit 11 on the primer side to the dipping unit 12, transfers the jig 1 from the reversing unit 14 to the dipping unit 12, and transfers the jig 1 from the drying unit 16 on the adhesive liquid side. The transfer to the reversing unit 17 is also performed.

The arrows a to k in FIG. 3 show the overall flow of the work 2 and the jig 1. 22, each unit of the device 22 is
Will go around.

Hereinafter, each unit will be described in more detail. The dipping units 12 and 15, the drying units 13 and 16, and the reversing units 14 and 17 have the same configuration in both the coating apparatuses 21 and 22 as the units themselves. Therefore, only the unit on the primer side will be described as an example.

FIGS. 7 and 8 show the work supply unit 1.
1 is shown. This unit 11 has a large number of works 2
And a part feeder 31 for sequentially aligning the workpieces 2 in a predetermined posture. The workpiece 2 is sequentially sent from the parts feeder 31 via a shooter 32. The work 2 is inspected by the different-parts inspection unit 33 before being set on the jig 1, and only the work 2 determined to have no abnormality is pushed down from the shooter 32 by the cylinder 34. A work receiving jig 37 is disposed upward on the base 35 via a component arm 36, and the work 2 pushed down from the shooter 32 is sequentially arranged on the work receiving jig 37. The work receiving jig 37 is provided with ten fitting portions for arranging ten works 2 corresponding to the jig 1, and the component arm 36 moves the work receiving jig 37 at a predetermined pitch. By sending the work 8 to the right, ten works 2 are arranged here. Also,
The jig 1 is held downward by the post 38 via a cylinder 39, and the work receiving jig 37 receiving the work 2 is further moved by the component arm 36 to the work below the jig 1. Move to the delivery position. And
When the jig 1 is lowered by the cylinder 39, each work 2 is attracted to the permanent magnet 4 of the jig 1 and is held by the jig 1.
Thereafter, the jig 1 is raised by the cylinder 39. At this position, the robot hand 40 of the transfer device 20 holds the
It is transported to the next step, that is, the dipping unit 12.
Note that the robot hand 40 has a pair of grippers and transports the jig 1 one by one. For transport from the work supply unit 11 to the dipping unit 12, one of the grippers is used. At the same time, in the other gripping part, the dipping unit 12
The jig 1 is being conveyed.

FIGS. 9 and 10 show the dipping unit 12. The dipping unit 12 is integrally provided with a swing section described later in a later stage, and FIGS. 9 and 10 show a configuration of a dipping section and a liquid draining section which are front sections thereof.

The dipping unit 12 is mounted on the base 4
A table 42 which reciprocates by a cylinder 43 in the left-right direction of FIG. 9 is provided on the table 1, and the hanger 3 of the jig 1 is engaged with The tool 1 is supported downward.
The jig 1 conveyed by the robot hand 40 is placed on the end of the table 42 (the left end in FIG. 9), and is conveyed to the dipping position surrounded by the post 44 as the table 42 moves. Is done. At this dipping position, the lift bar 45 and the lift cylinder 46
Is slightly lifted by the table 42 in this state.
Return to the left side in FIG. 9, the jig 1 is sequentially conveyed to the right side in FIG. Also, this dipping unit 1
As described above, No. 2 processes the first application for a range of approximately 180 ° and the second application for the remaining range of approximately 180 ° in parallel. The jigs 1 are conveyed one by one, and are processed one by one at the same time.

The post 44 supports a hanging frame 48 which can be moved up and down by a cylinder 47. A sub-frame 50 swingable about a fulcrum 49 at the lower end is attached to the inside of the suspension frame 48, and a pair of chucks 51 for holding the jig 1 downward are attached to the sub-frame 50. Have been. The sub-frame 50 is linked to the rod end of a liquid draining cylinder 52 that is arranged diagonally.
Swings by the action of. A liquid tank 53 for storing the primer liquid is arranged below the table 42.
The liquid tank 53 includes a cylinder 55 for moving the liquid tank 53 in the vertical direction, and a cylinder 54 for opening and closing the lid of the liquid tank 53.

That is, when a pair of jigs 1 are conveyed to a predetermined dipping position by the table 42, the cylinder 47 moves down, and the chuck 51 descends to grip each jig 1. In this state, the liquid draining cylinder 52 is retracted, and each jig 1 is in a horizontal state. Then, the liquid tank 53 is raised to a predetermined height position by the cylinder 55. As a result, each work 2 held in a posture hanging down from the jig 1 is immersed in the primer solution. In particular, the height position of the liquid tank 53 is regulated so that the liquid surface reaches a position of about 180 ° of the cylindrical work 2, and the liquid adheres to a substantially half range of the work 2. As described above, one of the jigs 1 is applied in the first 180 ° range as the first dipping process, and the other is applied in the remaining 180 ° range as the second dipping process. You.

After dipping, the jig 1 is attached to the chuck 51
The cylinder 47 moves upward while holding the position, and the liquid draining cylinder 52 advances at the position shown in FIG. Accordingly, as shown by the imaginary line in FIG.
The excess liquid flows from the work 2 into the liquid tank 53. After this liquid draining process, the liquid draining cylinder 52 retreats again, and each jig 1 is returned to the horizontal state. Then, it is placed again on the table 42 and is conveyed to the swing unit shown in FIGS. 11 to 13 as the table 42 moves.

The swing portion includes a pair of chucks 61 for holding the main body of the jig 1 and a cylinder 62 for vertically moving the chuck 61 as a lift mechanism for simultaneously lifting the pair of jigs 1 from the table 42 upward. It has.
A pair of chucks 63 and 64 for holding the hanger 3 of the pair of jigs 1 are provided side by side on both sides of the table 42. Each chuck 63, 64 is actually
As shown in FIG. 13, left and right chucks 63a, 64a, 63b, 64b are located opposite to each other, and are rotatably supported by bearings 65, respectively.
Also, each of the chucks 63a, 64a, 63b, 64b
Each has a spur gear 66, and the left chucks 63a, 63
4a and right chucks 63b and 64b are linked to each other via an intermediate small gear 67. Also,
The shaft of one of the chucks 63a and 63b is
Are connected to the pinion gears 68, respectively, and each of the pinion gears 68 is engaged with a pair of racks 69 arranged along the vertical direction. This rack 69
Are connected to the cylinders 70 and 71 disposed at the top, respectively. The rack 6 by the cylinders 70 and 71
9 is regulated by the stopper 72.

As the operation of the swing portion, the pair of jigs 1 transported by the table 42
Then, the hanger 3 is lifted by the cylinder 62 and is held by the swing chucks 63 and 64 from both sides. Then, after the chuck 61 retreats left and right, the rack 69 moves up and down by the cylinders 70 and 71, and the chucks 63 and 64 reciprocately rotate. As a result, the jig 1 holding the work 2 swings around the hanger 3, and as described above, the primer liquid attached by dipping is spread. The swing angle can be adjusted by the stopper 72. The jig 1 having completed the swing processing is returned to the table 42 again, and is conveyed to the next drying unit 13.

FIGS. 14 and 15 show the drying unit 13.
Is shown. The drying unit 13 is configured to surround a table 42 continuous from the dipping unit 12, and a drying oven shutter 82 is supported on a base 81 so as to be vertically movable. Is provided below the base 81. The shutter 82 has four shutter plates 82a so as to surround the pair of jigs 1 from both sides. Then, hot air ports 84 are provided at a total of four locations so as to supply hot air from both ends to a pair of spaces accommodating the respective jigs 1. The hot air port 84 communicates with a hot air source (not shown) via a duct 85. In addition, in order to lift the jig 1 from the table 42 at the drying position, a lift bar 86 and a lift cylinder 87 are provided similarly to the dipping unit 12.

Further, at the subsequent stage of the hot air port 84, an air port 88 for supplying cold air downward is provided for cooling the jig 1 after drying to room temperature. This vent 8
8 is connected to a blower 90 via a duct 89.

Accordingly, in the pair of jigs 1 transported on the table 42 from the dipping unit 12, the shutter 82 is lowered and surrounded by the cylinder 83.
Then, hot air is supplied from the hot air port 84 to perform drying. Note that the table 42 is returned to the left side in FIG. 14 by the cylinder 92 after the shutter 82 is raised and the jig 1 is slightly lifted by the lift bar 86. Then, after the jig 1 is returned onto the table 42, the table 42 advances rightward in FIG. 14 to move the jig 1. At this time, the cool air is blown from the ventilation opening 88 to cool the jig 1.

The table 42 is actually divided into the above-mentioned dipping unit 12 and the above-mentioned drying unit 13, but both of them reciprocate integrally. It is not substantially different from a continuous one. Of course, there is no problem even if the table 42 is configured as one member across both units.

The pair of jigs 1 whose cooling is completed in the drying unit 13 is gripped by the robot hand 91 of the transfer device 19 and transferred to the next step. Specifically, of the pair of jigs 1, one jig 1 at the stage where half of the work 2 is applied is transported to the reversing unit 14, and the entire periphery of the work 2 is coated with the primer liquid. The other jig 1 for which dipping is completed is the dipping unit 1 of the adhesive liquid application device 22.
5 is conveyed.

FIGS. 16 and 17 show the reversing unit 14.
Is shown. The reversing unit 14 has a height 2
It has a base 101 divided into steps, and on the lower step side, FIG.
6 is provided with a cylinder 102 that moves along the left-right direction. A substantially U-shaped sub-frame 103 is fixed on the cylinder 102, and a set of chucks 104 is disposed at an upper end thereof. The chuck 104 includes left and right chucks 104 facing each other.
a and 104b. One chuck 104a is connected to the rotary cylinder 105, and the other chuck 104b is rotatably supported. The chuck 104 has a gripping piece that is elongated in the diameter direction so that the hangers 3 of the pair of jigs 1 can be simultaneously held. A jig holding stage 107 is supported below the chuck 104 on the sub-frame 103 via a cylinder 106. The jig holding stage 107 includes a pair of right and left chucks 108 for holding the hanger 3 between the chucks 104a and 104b.
108 is provided. Further, the two chucks 108,
An eject plate 109 bent in a U-shaped cross section is provided between the two, and is supported by a jig holding stage 107 by a cylinder 110. The interval between the two plates at the upper end of the eject plate 109 is set wider than the width of the main body of the jig 1 and slightly smaller than the outer diameter of the work 2.

A hand 112 for holding the jig 1 is suspended from a high step portion of the base 101 via a post 111. The hand 112 moves between a low step portion and a high step portion of the base 101 by a cylinder 113 which moves in the left-right direction in FIG.
To move up and down. Further, a support base 115 is arranged so as to face the hand 112. This support base 115 can be moved in the left-right direction in FIG.

The operation of the reversing unit 14 is as follows. First, the jig holding stage 107 holds the empty jig 1 (second jig) upward by the chuck 108. The jig 1 (the first jig provided with the work 2) transferred from the drying unit 13 by the robot hand 91 of the transfer device 19.
Is in a downward posture, and the jig 1 is placed on the empty jig 1 from above. In other words, the pair of jigs 1 are combined from directions different by 180 ° with the cylindrical work 2 interposed therebetween, and the work 2 is also attracted to the permanent magnet 4 of the empty jig 1. In this state, both jigs 1
Are hung together by the chuck 104. Note that the above operation is performed at the supply position K1 indicated by a solid line in FIG.

Next, the sub-frame 103 is moved to the left side in FIG. 16 by the cylinder 102, and reaches the reversing position indicated by reference numeral K2. At this position, the chuck 108 of the jig holding stage 107 is released and the cylinder 106
As a result, the stage 107 descends, and the rotary cylinder 105 rotates 180 °. Thereby, the pair of jigs 1 are turned upside down together with the work 2.
After reversing, the jig holding stage 107 is moved up again by the cylinder 106, and the chuck 108 grips the hanger 3 of the jig 1 below. In this state, the upper chuck 104 is released and the cylinder 1
The eject plate 109 is raised by 10 and
The individual works 2 are simultaneously projected upward. by this,
The work 2 is separated from the jig 1 below.

The upper jig 1 holding the work 2
Is held by the hand 112 and the support base 115
It is transferred to above. Then, as the cylinder 116 moves, it is transported to the left end in FIG.
0 of the robot hand 40. The jig 1 left on the jig holding stage 107 waits for the next jig 1 while remaining empty.

The work 2 reversed in the reversing unit 14 as described above flows again to the dipping unit 12 and the drying unit 13 together with the jig 1.

On the other hand, the jig 1 of the work 2 on which the application of the primer liquid has been completed over the entire circumference is sequentially transferred from the drying unit 13 to the dipping unit 15 on the side of the adhesive liquid application device 22 as described above. This adhesive liquid application device 22
In, an adhesive liquid is applied. The dipping unit 15 of the adhesive liquid application device 22 is not particularly different from the above-described dipping unit 12 except that the liquid stored in the liquid tank 53 is an adhesive liquid. Similarly, the drying unit 16 and the reversing unit 17 are the same as those of the above-described primer coating device 21, and thus the description thereof is omitted.

Then, in the adhesive liquid application device 22,
The work 2 having the adhesive liquid applied all around is finally removed from the jig 1 in the work discharge unit 18.

FIGS. 18 and 19 show the structure of the work discharge unit 18. FIG. Note that the work discharge unit 18 is disposed adjacent to the reversing unit 17, and FIG.
Three parts are drawn simultaneously.

An eject stage 122 is supported on a base 121 of the work discharge unit 18 so as to be vertically movable, and a cylinder 123 for vertically moving the eject stage 122 is provided.
Are arranged. A pair of eject bars 124, 1 extending in the horizontal direction are provided above the eject stage 122.
24 are provided. This eject bar 124, 1
Reference numeral 24 denotes ten works 2 aligned and held on the jig 1
The cylinders 125, 125 which move in the horizontal direction move forward and backward in the left and right directions of FIG. Has become. The eject bars 124 have a round bar shape so as not to damage the coating film on the inner peripheral side of the work 2.

Then, the work 2 removed from the jig 1
And a fiber sensor 127 for measuring the number of works 2 with the jig 1 mounted.

That is, the jig 1 transferred from the drying unit 16 by the robot hand 40 of the transfer device 20
Is held at a position corresponding to the eject bars 124, 124 while being held by the robot hand 40.
In this state, the number of works 2 is counted by the fiber sensor 127, and the cylinders 125 and 12 are counted.
5 causes the eject bars 124, 124 to advance inside each other and enter the inner peripheral side of each work 2. Then, the cylinder 123 is lowered, and each work 2 is separated from the jig 1 by the eject bars 124. After the workpieces 2 are separated from each other, the eject bars 124, 124 move back again, and the workpieces 2 are discharged via the shooter 126.

The empty jig 1 is transferred to the work supply unit 1 by the transfer device 20 as described above.
Sent to 1

[0060]

As is apparent from the above description, according to the present invention, a coating liquid such as an adhesive is applied to a ring- shaped metal part by dipping. Liquid consumption can be significantly reduced. Also, despite the dipping, the coating liquid such as an adhesive does not need to be attached to the jig at all, and various problems due to contamination of the jig and solidification of the applied coating liquid can be prevented.

Further, by performing the draining and the swinging as in claim 2, the boundary portion dipped in two times can be made unclear, and the finally obtained film thickness can be reduced in each portion. Can be very uniform.

Further, according to the reversing method as described in claim 3 or 6, a large number of metal parts can be efficiently and simultaneously reversed, and the overall working time can be reduced.

If the first half of the processing and the second processing are performed in parallel, the entire apparatus can be downsized.

[Brief description of the drawings]

FIG. 1 is a process explanatory view showing one embodiment of a coating method according to the present invention.

FIG. 2 shows a jig used in this coating method.
(A) is a side view, (b) is a front view.

FIG. 3 is a plan view showing one embodiment of a coating apparatus and showing the overall configuration thereof.

FIG. 4 is a front view of the entire coating apparatus.

FIG. 5 is a left side view of the entire coating apparatus.

FIG. 6 is a right side view of the entire coating apparatus.

FIG. 7 is a rear view of the work supply unit.

FIG. 8 is a side view of the work supply unit.

FIG. 9 is a front view of the dipping unit.

FIG. 10 is a side view of the dipping unit.

FIG. 11 is a side view of a swing portion of the dipping unit.

FIG. 12 is a front view of a swing portion of the dipping unit.

FIG. 13 is a plan view of the same.

FIG. 14 is a front view of a drying unit.

FIG. 15 is a side view of the drying unit.

FIG. 16 is a front view of the reversing unit.

FIG. 17 is a side view of the reversing unit.

FIG. 18 is a front view of a work discharge unit.

FIG. 19 is a side view of a work discharge unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Jig 2 ... Work (ring-shaped metal part) 4 ... Permanent magnet 11 ... Work supply unit 12, 15 ... Dipping unit 13, 16 ... Drying unit 14, 17 ... Reversing unit 18 ... Work discharging unit 21 ... Primer coating device 22 ... Adhesive liquid application device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI B05D 3/00 B05D 3/00 G 7/14 7/14 Z (56) References JP-A-6-292706 (JP, A) JP-A-54-160446 (JP, A) JP-A-8-38980 (JP, A) JP-A-6-292707 (JP, A) JP-B-53-16806 (JP, B1) JP-B-59-53601 (JP, B2) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B05C 3/02-3/109 B05C 9/12 B05C 13/00-13/02 B05D 1/18 B05D 3/00, 3/04 B05D 7/14 B65G 49/02-49/08

Claims (6)

(57) [Claims] 1. A plurality of ring- shaped metal parts made of a magnetic material are attracted to a jig provided with a magnet on a support surface , with the outer peripheral surface of the cylinder being a supported surface, and the metal parts are separated from each other. A component supply step of aligning and holding the metal component in a state where the metal component hangs downward from the jig, and a liquid tank having a liquid coating material stored therein has a liquid level of approximately 180 ° of each of the metal components. Soak over the area
The coating material on the surface including the inner and outer peripheral surfaces
A first dipping step of clothing, a first drying step of drying a coating material adhered to the metal part, and an inversion step of inverting the dried metal parts by 180 ° with respect to a jig. The metal parts are dipped downward from the jig and immersed in a liquid tank containing a liquid coating material such that the liquid level covers a range of approximately 180 ° of each of the metal parts.
The coating material on the surface including the inner and outer peripheral surfaces
A method of applying a coating material to a ring- shaped metal component, comprising: a second dipping step of fabricating; and a second drying step of drying a coating material attached to the metal component. 2. A liquid draining step in which a jig pulled up from a coating material tank is tilted for a predetermined time so that a center axis of a ring- shaped metal part is tilted, and each metal part having passed through the liquid draining step. A swinging step of swinging the jig such that the jig is rotated relative to the dipping attitude, between a first dipping step and a first drying step, and a second dipping step. 2. The method according to claim 1, further comprising the steps of:
A method for applying a coating material to a ring- shaped metal part as described in the above. 3. The reversing step comprises: adsorbing a second jig to the metal component from a direction different from the first jig holding the metal component by 180 ° in opposition to the first jig holding the metal component; 2. The method according to claim 1, wherein the step is performed by pulling away from the tool.
A method for applying a coating material to a ring- shaped metal part as described in the above. 4. A plurality of ring- shaped metal parts made of a magnetic material are arranged at appropriate intervals on a support surface so as to be aligned and held apart from each other with the cylindrical outer peripheral surface as a supported surface. And a component supply unit for sequentially supplying and holding the metal components to the jig, and holding the jig in a posture in which the metal component hangs down from the jig, and In a liquid tank containing a coating material, the liquid surface is immersed so as to cover a range of approximately 180 ° of each of the above-mentioned metal parts, and is immersed in a surface including the inner and outer peripheral surfaces in the range.
A first dipping unit for applying the coating material, a first drying unit for drying the coating material adhered to the metal component, and a state in which each of the dried metal components is turned 180 ° with respect to the jig. A reversing unit, wherein the metal component holds the jig in a posture in which the metal component hangs down from the jig, and a liquid tank in which a liquid coating material is stored has a liquid surface approximately 180 ° of each of the metal components. Immersed so as to cover the area of
A second dipping unit for applying the coating material, a second drying unit for drying the coating material attached to the metal component, and a discharge unit for removing the metal component from the jig conveyed from the second drying unit A coating material application device for a ring- shaped metal part, comprising: 5. The first dipping unit and the second dipping unit are integrated as one dipping unit for dipping a jig in each step in parallel, and the first dipping unit and the second dipping unit are integrated with each other. 5. The ring- shaped metal part according to claim 4, wherein the drying unit and the second drying unit are integrated as one drying unit for drying the jig in each step in parallel. Coating material application equipment. 6. The reversing unit includes: a chuck mechanism that holds an empty second jig; and a first jig that holds a metal component from the first drying unit, and sandwiches the metal component. Conveying means for combining the two jigs from different directions by 180 °, a rotation drive mechanism for rotating the two jigs combined by 180 °, and operating in a state where the first jig is held by the chuck mechanism; 5. An apparatus for applying a coating material to a ring- shaped metal component according to claim 4, further comprising: an eject mechanism for projecting the metal component from the first jig toward the second jig.