JPH086547Y2 - Rotating device for coated objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a rotating device for an object to be coated, which is adapted to dry a coating film while rotating an object to be coated such as a bumper of an automobile.

Conventional technology In order to give a car a high-class appearance, the degree of painting of the body etc. is very important, and each automobile manufacturer has developed a coating technology to improve the efficiency of the painting as well as to give a high-class feeling. Instead of a conventional sheet metal bumper, a synthetic resin shock absorbing bumper is used, and painting is applied to this bumper to enhance the luxury of the automobile. The coating process of a synthetic resin bumper generally includes a cleaning process, a masking process, a base coating and drying process, a top coating and a drying process.

In order to maintain the quality of coating, it is important to suppress coating defects as much as possible, and one type of this coating defect is "sag" of the coating that occurs when coating on a vertical surface or an inclined surface of the object to be coated. The reason for the sagging is that the film thickness of the paint is too thick or the viscosity is low, and a part of the paint flows down for several millimeters, and the coating film rises at the part where the flow is stopped and becomes a sagging pattern. As measures to prevent this sagging, there are methods such as reducing the film thickness, increasing the viscosity of the paint, and speeding up the drying, but the method of rotating the coated object for a predetermined time immediately after coating also prevents sagging. It is effective to do.

For example, Japanese Utility Model Application Laid-Open No. 63-173361 has a stopper means for stopping an object to be coated at a predetermined rotational posture position after the object has been rotated by a predetermined number of rotations, as a device for rotating an object to be coated in a coating line. A disclosed device is disclosed.

Problems to be Solved by the Invention The technique described in the above-mentioned publication is applied to a large object to be coated such as an automobile body, and there is a problem that the device becomes complicated and the cost becomes high.

The present invention has been made in view of these points,
The purpose of this is to rotate the object to be coated in a rotating device for the object to be coated which is dried while rotating the object after the coating is completed so as to prevent a shock when the rotation is stopped. It is to provide a device.

Means for Solving the Problems A rotating device for an object to be coated according to the present invention comprises a carrier frame conveyed by a conveying means, an object to be coated holding member rotatably attached to the carrier frame and holding the object to be coated, A first magnet fixed to the carrier frame;
A second magnet fixed to the object-to-be-coated holding member is attracted to the first magnet. In addition to these components, the first and second magnets are held in a relatively distant positional relationship when the object-to-be-coated holding member is rotated, and the first and second magnets are mutually retained when rotation is stopped. It includes means for adjusting the distance between the magnets to be brought close to each other.

Action When the coating film is dried, when the carrier frame is conveyed by the conveying means, the coating object held by the coating object holding member is rotated to dry the coating film. At this time, since the distance between the first and second magnets is maintained in a relatively distant positional relationship by the inter-magnet distance adjusting means, the magnetic force does not significantly affect the rotation of the object-to-be-coated holding member.
On the other hand, when rotation of the object-to-be-coated holding member is stopped, the distance between the first and second magnets is made closer by the inter-magnet distance adjusting means, so that the first and second magnets attract each other and the member-to-be-coated holding member is held. The rotation gradually stops. Therefore, the shock at the time of stopping the rotation is small, and it is possible to prevent the object to be coated from falling off the object-to-be-coated holding member.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

First, referring to FIG. 1, there is shown a front view of a rotating apparatus for an object to be coated according to an embodiment of the present invention. Since the rotating device for the object to be coated according to the present embodiment is configured substantially symmetrically, the same reference numerals will be given to the components corresponding to the left and right. The rotating device 2 for the object to be coated is transported by the transport mechanism 4 including a conveyor and the like. 6 is a carrier frame that is detachably locked to the transport mechanism 4,
An object-to-be-coated holding member 8 is rotatably attached to the carrier frame 6 via rotary shafts 10 on both sides. One end of the rotary shaft 10 is fixed to the object-to-be-coated holding member 8, and the pinion 12 is fixed to the other end. The rotary shaft 10 is provided so as to pass through a longitudinal elongated hole 7 provided in the carrier frame 6.

Reference numeral 14 denotes a rack provided along the carrying direction that meshes with the pinion 12, and is attached to the wall 18 via an attachment member 16. 20 is the floor. In addition, the object-to-be-coated holding member 8
An object to be coated, such as a bumper 22 shown by a chain double-dashed line, is held in the. A first magnet 24 is fixed to the carrier frame 6, and a second magnet 26 is fixed to the object-to-be-coated-holding member 8 so as to attract the first magnet 24. Reference numeral 28 denotes a lock pin which is mounted on the carrier frame 6 and which stops the rotation of the object-to-be-coated holding member 8 which will be described in detail later.

Next, the transport mechanism 4 portion of the embodiment of the present invention described above will be described in detail with reference to FIGS. 2 and 3. As is apparent from FIGS. 2 and 3, a pair of coating object rotating devices 2, 2'having substantially the same structure are integrally connected by a connecting member 40 and mounted on a carriage 42. Reference numeral 44 is a guide rail formed by a pair of rail members 46, 46 (see FIG. 4), and the carriage 42 has an arrangement shown in FIG.
I will guide you in the direction.

Referring to FIG. 3, at the left end of the rack 14, a pinion riding portion 32 formed of a slant portion 34 and a lifting portion 36 is integrally provided. Further, an inclined portion 38 that guides the pinion 12 downward to release the engagement with the rack 14 is integrally provided at the right end of the rack 14. In FIG. 3, 50
Is a chain that is rotationally driven by a drive source (not shown), and a dog 52 is attached to the chain 50. A pulling roller unit 54, to which four rollers 56 are attached, is fitted and guided on the guide rail 44. The pulling roller unit 54 is provided with a dog 58 that engages with the dog 52 on the chain 50 side. The pulling roller unit 54 is connected to the carriage 42 via a connecting member 60. The trolley 42 includes a pair of roller units 62, 64 having a configuration similar to that of the traction roller unit 54.
, And each roller unit 62, 64 is configured to have four rollers 56, and is fitted and guided by the guide rail 44.

In FIG. 2 and FIG. 3, the object-to-be-coated holding members 8 of the object-to-be-coated rotating devices 2 and 2 ′ have the same posture because their rotations have a phase difference of 360 degrees.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, showing a detailed structure of the roller unit 64. A mounting member 68 is slidably fitted on a shaft 66 fixed to the lower end of the carriage 42, and four rollers 56 are rotatably mounted on the mounting member 68. Each of these rollers 56 is a rail member.
It is fitted to 46 and guided. The ring plate 70 is inserted into the shaft 66 from the lower end side of the shaft 66, and the pin 72 is inserted into the shaft 66.
The ring plate 70 is prevented from coming off by inserting the ring plate 70 into the end of the ring plate 70.

The operation of the above-described embodiment will be described mainly with reference to FIGS. 3 and 5. When the object-to-be-coated holding member 8 of the object-to-be-coated rotating device 2 is not rotated and is being conveyed by the conveying mechanism 4, the pinion 12 is not meshed with the rack 14 and is located below the rack 14, and thus the pinion is provided. The rotation shaft 10 of the object-to-be-coated-holding member 8 to which 12 is attached is supported at the lowermost position of the elongated hole 7 of the carrier frame 6, and the second magnet
26 is closest to the first magnet 24, the lock pin 28 is engaged with the lock hole 9 as shown in FIG. 5 (B), and the object-to-be-coated holding member 8 is in the non-rotating state. It's locked. When the pinion 12 reaches the lifting part 36 via the inclined part 34 of the pinion riding part 32, the rotary shaft 10 becomes the uppermost position of the elongated hole 7 of the carrier frame 6 and holds the object to be coated as shown in FIG. 5 (C). Since the member 8 is lifted in the direction of the arrow Y, the lock pin 28 is pushed in the direction of the arrow Z by the inclined portion 9a (see FIG. 7) formed in the lock hole 9 to disengage from the lock hole 9, and the lock is released. .

The lock pin 28 is constructed as shown in FIG.
That is, it is configured by fitting and fixing a cylindrical member 74 that accommodates two engagement pins 76 and a spring 78 in the through hole 29, and the engagement pin 76 is biased outward by the spring 78. . Further, engaging pins 76 are provided on the outside and inside of the carrier frame 6.
Are formed with concave portions 11a and 11b (see FIG. 5).

Since the lock pin 28 portion is configured as described above, when the locked state of FIG. 5 (B) changes to the unlocked state of FIG. 5 (C), the engagement pin 76 causes the inclined portion 9a of the lock hole 9 to move.
Is pressed by the concave portion 11b inside the carrier frame 6.
The lock pin 28 is locked in this state. Pinion 12 is a pinion riding section
When it disengages from 32 and meshes with the rack 14, that is, when it enters the area D in FIG. 3, the object-to-be-coated holding member 8 slightly descends from the state in FIG. 5 (C) as shown in FIG. 5 (D). Then, the contact between the member 8 to be coated and the lock pin 28 is broken. At this time, since the object-to-be-coated holding member 8 is raised as compared with the case of the locked state of FIG. 5 (B), the distance between the first magnet 24 and the second magnet 26 is large, and thus the object to be coated is separated. The braking force (magnet) acting on the holding member 8 is weakened. Therefore, the object rotating device 2, 2 '
When it is conveyed in the direction of arrow a in FIG.
The object-to-be-coated holding member 8 is rotated as 12 rotates, and the bumper 22 is dried.

Inclined part 38 where the pinion 12 is integrally provided on the rack 14
When it is conveyed to the area A, which is in a completely free state, via the pinion 12, the rotation of the object-to-be-coated holding member 8 is cut off, and the object-to-be-coated holding member 8 is freed as shown in FIG. It will be in a rotating state. At this time, the object-to-be-coated holding member 8 is lowered as compared with the rotating state shown in FIG.
As the distance between the magnet 24 and the second magnet 26 approaches, the object-to-be-coated holding member 8 is gradually stopped by the attraction force of the rotating magnet. As is well known in the art, when the rotation of the object-to-be-coated holding member 8 is stopped, the object-to-be-coated holding member 8 is moved to the first position.
A balancer (not shown) that is to be maintained in the illustrated state is attached to the object-to-be-coated-holding member 8.

As described above, the rotation of the object-to-be-coated holding member 8 is gradually stopped by the attractive force of the magnet, but in the completely stopped state, the lock pin 28 is aligned with the lock hole 9, and the object-to-be-coated rotating device 2 further moves. When the lock pin 28 is conveyed and comes into contact with the protrusion 30 provided on the wall 18, the lock pin 28 is pushed by the protrusion 30 and engages with the lock hole 9 as shown in FIG. The body holding member 8 is locked. At this time, the engaging pin 76
Is disengaged from the outer recess 11a of the carrier frame 6 and engages with the inner recess 11b to maintain the lock pin 28 in the locked state.

Effect of the Invention As described in detail above, the rotating device for the object to be coated of the present invention is as follows.
Since the second magnet is brought closer to the first magnet to gradually stop the rotation of the object-to-be-coated holding member at a desired position, it is possible to reduce the shock of the object-to-be-coated holding member when the rotation is stopped. It is possible to effectively prevent the object to be coated from falling off the member to retain the object to be coated. Further, since the second magnet is kept away from the first magnet when the object to be coated is rotated, the magnetic force exerted on the object-to-be-coated holding member holding the object to be rotated is reduced, and the object-to-be-coated holding member is smoothly moved. It can be rotated.

[Brief description of drawings]

1 is a front view of the embodiment of the present invention, FIG. 2 is a plan view of the embodiment of the present invention, FIG. 3 is a side view of FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV of FIG. 5 is an explanatory view showing the operation of the lock pin, FIG. 6 is a sectional view showing the detailed structure of the lock pin, and FIG. 7 is a view taken along the line VII of FIG. 2, 2 '... Rotating device for coated object, 4 ... Transport mechanism, 6 ... Carrier frame, 8 ... Holding member for coated object, 12 ... Pinion, 14
... rack, 22 ... bumper, 24 ... first magnet, 26 ... second magnet, 28 ... lock pin, 30 ... protrusion, 32 ... pinion riding section, 38 ... inclined section.

Claims (1)

[Scope of utility model registration request] 1. A rotating device for a coated body, wherein a coating film is dried while the coated body is rotated after completion of coating, the carrier frame being transported by a transport means, and rotatable on the carrier frame. An object-to-be-coated holding member that is attached to the object and holds an object to be coated, a first magnet fixed to the carrier frame, and a second magnet fixed to the object-holding member so as to attract the first magnet. A magnet distance adjusting means for holding the first and second magnets in a relatively distant positional relationship when the object holding member rotates and for bringing the first and second magnets closer to each other when the rotation is stopped, A rotating device for an object to be coated, comprising: