JP3849856B2 - Conveyor device for conveying workpieces - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, when a long part such as a bumper is painted on a painting line by using a conveyor chain provided on the side of a rail, a long carriage is loaded. The present invention relates to a conveyor device for transporting an object to be coated.
[0002]
[Prior art]
Car parts are painted on a painting line equipped with a painting booth, and then dried in a drying process. Conventionally, when a long part, which is an object to be coated, is transported in this painting line, a pulling member provided below the rail along a rail with a carriage provided with a mounting table on which the long part is placed. And traveling with a chain. Further, this rail is made of engineering steel, groove steel, or the like, and the wheels of the transport carriage are in contact with the horizontal portion and run under the load of the transport carriage.
[0003]
[Problems to be solved by the invention]
However, since the conventional conveyor device for conveying an object is provided with a pulling member, a chain, and the like for running the conveying cart directly under the rail, the length of the conveyor device for conveying an object is increased. There was a problem that the length of the painting booth had to be increased accordingly. In addition, since the rail is made of engineering steel, groove steel, etc., there is a problem that the paint adheres to and accumulates on the horizontal portion where the wheel contacts, and hinders the traveling of the transport carriage.
[0004]
Accordingly, the present invention eliminates the problems of the prior art as described above, makes the length of the conveyor device for conveying an object to be compact, and makes it possible to reduce the length of the coating booth. In the painting booth, an object is to prevent the paint from being deposited on the rail on which the transport carriage travels.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention according to claim 1 includes a pair of upper and lower rails provided in a coating line, a transporting carriage that travels by placing an object to be coated on the upper rail, and the transporting In the conveyor device for conveying an object provided with a conveyor chain for driving the side surface for running the carriage, the conveyor chain for driving the side surface is provided on the side of the upper and lower rails and travels around the coating line, Engagement means for engaging the transfer carriage and pushing the transfer carriage is provided, the transfer carriage having a main wheel that travels on an upper rail having a substantially circular cross section under the load of the transfer carriage, and a lower wheel It is configured as a conveyor device for conveying an object to be coated that includes a pair of guide members that come into contact with both side surfaces of the rail.
According to a second aspect of the present invention, in the conveyor device for conveying an object to be coated according to the first aspect, the pair of upper and lower rails provided in the painting line extends from the painting line to the drying process entrance, On the side of the extended upper and lower rails, there is provided a transfer conveyor chain provided with an engaging means for engaging with the transport carriage. The engaging means is engaged with the transport carriage to push the transport carriage. It is configured to be connected to an oven conveyor in the drying process.
[0006]
[Action]
A conveyor device for conveying an object having the above-described configuration is provided in this conveyor chain by a side-drive conveyor chain provided on the side of a pair of upper and lower rails provided in a painting line. The engaging means is engaged from the side, and the transport carriage is pushed. In this case, the load of the transport carriage is received by the main wheel that contacts the upper rail. The lower rail functions as a guide rail because the pair of guide members abut on both side surfaces so that the transport carriage does not tilt. Further, since the upper rail on which the main wheel of the transport carriage travels has a substantially circular cross section, the paint does not accumulate on the upper rail in the painting booth, and the travel of the transport carriage is not hindered.
Further, the transfer carriage is provided on the connecting conveyor chain by the connecting conveyor chain provided on the other side of the upper and lower rails extending from the painting line to the drying process entrance. They are pushed together and transferred to the oven conveyor in the drying process.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An example which is one embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a coating line P and a drying process D in a coating system for a long article such as an automobile bumper.
[0008]
The long object W is loaded on the transport carriage 13 so that the longitudinal direction of the object W is substantially parallel to the traveling direction of the transport carriage 13 at the loading position P1, and the object W is loaded. The transport carriage 13 is transported by the conveyor chain 14 through the dust removal chamber P2 and the painting booth P3 to the vicinity of the reversal portion P4 of the conveyor chain 14 for side driving at the end of the painting line P.
[0009]
The transport carriage 13 is transferred from the reversing part P4 to the drying process entrance D1 of the drying process D by a separate transfer conveyor chain 15 and transferred to the oven conveyor 16 in the same direction. As a result, the transport carriage 13 transferred to the oven conveyor 16 is storage-transferred in the drying furnace D <b> 2 with the longitudinal direction of the article W being oriented in a direction perpendicular to the traveling direction of the oven conveyor 16.
[0010]
Hereinafter, the conveyor apparatus 11 for conveying a workpiece will be described in detail. As shown in FIG. 4, the conveyor device 11 for conveying the object to be coated includes a pair of upper and lower rails 12 a and 12 b, a conveyance carriage 13 on which the article W is placed and traveling, and a driving source of the conveyance carriage 13. And a conveyor chain 14 for side driving.
[0011]
2 and 3 show the reversing portion P4 of the conveyor chain 14 for driving the side surface in the painting line P, and FIG. 4 shows an enlarged main portion of the reversing portion P4. The pair of upper and lower rails 12a and 12b provided in the painting line P is made of a substantially circular member having a cross section such as a round bar or a pipe, and is supported by a yoke 12c as shown in FIGS. The yoke 12c is provided at a distance from the machine casing 11a.
[0012]
The transport carriage 13 is placed on the article W to be moved and travels above the upper rail 12a, and main wheels 13a and 13a that travel under the load of the transport carriage 13 are arranged in the front and rear. In addition, guide rollers 13b, which are guide members, are arranged in front and rear so as to come into contact with both side surfaces of the lower rail 12b. The transport carriage 13 includes a support arm 13c, a frame 13d having a hanging portion 13d ′, a gantry 13e, and a placing table 13f on which the article W is placed. The gantry 13e may be a gantry equipped with an indexer.
[0013]
On one side of the pair of upper and lower rails 12a and 12b, a side-drive conveyor chain 14 that runs around the inside of the upper and lower rails in a substantially horizontal direction on the coating line P is provided. As shown in FIG. 5, an engagement plate 14 a that is an engagement means that engages with the support arm 13 c of the transport carriage 13 from the lateral side is attached to the conveyor chain 14. By this engagement plate 14a, the transport carriage 13 is pushed along the upper and lower rails 12a and 12b.
[0014]
The side-drive conveyor chain 14 is wound around the drive chain 14b, the take-up chain 14c, the driven chain 14d, and the like at the reversing portion P4. The drive chain wheel 14b is rotated via a sprocket S, a chain C, and the like using a drive gear motor M as a drive source.
[0015]
As shown in FIG. 1, the upper rail 12a and the lower rail 12b are extended from the vicinity of the reversing part P4 to the drying process entrance D1, and the other side of the extended rails 12a ′ and 12b ′. On the other hand, that is, on the side opposite to the side on which the side-drive conveyor chain 14 is installed, there is provided a conveyor cart transfer conveyor chain 15 separate from the side-drive conveyor chain 14. As shown in FIG. 4, the connecting conveyor chain 15 circulates in a horizontal direction in a pair of upper and lower sides.
[0016]
An engagement arm 15 a that is an engagement member is attached to the connecting conveyor chain 15. The engaging arm 15a is engaged with a hanging portion 13d ′ of the frame 13d provided on the transport carriage 13 from below, and the transport carriage 13 is pushed and transferred to the oven conveyor 16 in the drying step D.
[0017]
As shown in FIG. 6, the oven conveyor 16 is provided in the drying furnace D2 between a pair of endless chains 16a provided above a heating member (not shown) and the pair of chains 16a and 16a. It comprises a support mechanism 17 that supports the transport carriage 13 and is driven intermittently. In FIG. 6, 16b and 16c are guide rails for the chain 16a, 16d is a support, 16e is a sprocket, and 16f is a rail for transporting the transport carriage 13 to the adjacent oven conveyor 16.
[0018]
The support mechanism 17 that supports the transport carriage 13 includes a pair of upper and lower pipes 17a and 17b, a slat 17c provided between the pair of chains 16a, and both ends of the slat 17c so as to support the pipes 17a and 17b. And a pair of yokes 17d provided upright.
[0019]
A pair of upper and lower pipes 17a and 17b provided in the support mechanism 17 are extended from the coating line P when the oven conveyor 16 stops at the drying process entrance D1, and are continuous with the extension rails 12a 'and 12b', respectively. is there. The upper rails 12a and 12a ′ and the upper pipe 17a all have the same cross-sectional shape, and the lower rails 12b and 12b ′ and the lower pipe 17b all have the same cross-sectional shape.
[0020]
In the conveyor device 11 for transporting an object to be configured as described above, the engagement plate 14a attached to the conveyor chain 14 for driving the side surface that circulates is engaged with the support arm 13c of the transport carriage 13 from the side. Thus, the transport carriage 13 is pushed along the upper and lower rails 12a and 12b.
[0021]
In the reversing part P4, the carriage 13 that is pushed by the engagement plate 14a and travels is disengaged from the engagement plate 14a when the side drive conveyor chain 14 is reversed and the feeding by the conveyor chain 14 is completed. To do.
[0022]
The transport carriage 13 that has been pushed by the conveyor chain 14 is pushed by an engagement arm 15a attached to the transfer conveyor chain 15 from below and engaged with a hanging part 13d 'of a frame 13d provided on the transport carriage 13. And is transferred to the oven conveyor 16 in the drying step D.
[0023]
The transfer carriage 13 is transferred to the oven conveyor 16 when the intermittently running oven conveyor 16 stops and the extension rails 12a 'and 12b' and the upper and lower pipes 17a and 17b of the support mechanism 17 are continuous. 13 is pushed by the connecting conveyor chain 15 and transferred to the pipes 17 a and 17 b of the support mechanism 17 provided in the oven conveyor 16.
[0024]
The transport carriage 13 transported onto the support mechanism 17 is transported in storage with the longitudinal direction of the object W to be coated being orthogonal to the traveling direction of the oven conveyor 16, and heating means (such as a heat radiating tube provided at the lower part). And dried by heating.
[0025]
As described above, the oven conveyor 16 includes the pair of endless chains 16a provided above the heating member of the drying furnace D2, and the support mechanism 17 of the transport carriage provided between the pair of chains. The support mechanism 17 of the carriage 13 includes a slat 17c provided between the pair of chains, a pair of yokes 17d suspended from both ends of the frame, and a pair of upper and lower pipes 17a supported by the yokes. 17b, and the upper and lower pipes 17a and 17b are connected to a pair of upper and lower rails extended from the painting line at the entrance of the drying process, so that the transport carriage 13 is moved from the painting line P to the oven conveyor 16 in the drying process D. Can be transferred easily. In addition, since there is nothing that blocks the radiant heat other than the slats 17c, pipes 17a, 17b, and other members that form gaps between the object to be coated W and the heating means, drying can be performed efficiently.
[0026]
As mentioned above, although the Example of the conveyor apparatus for to-be-painted article conveyance was demonstrated, it is preferable that the upper rail 12a is a substantially circular member in cross section. Further, the lower rail 12b is not limited to a member having a substantially circular cross section, but may be a strip-shaped steel plate or the like as long as it functions as a guide rail. In addition, the engagement plate provided on the side-drive conveyor chain and the engagement arm provided on the connecting conveyor chain may have any shape, as long as they function as engagement members and engagement means. Good.
[0027]
【The invention's effect】
As described above, according to the conveyor device for conveying an object of the present invention, the conveyor chain for driving the side surface is provided on the side of the pair of upper and lower rails and is engaged with the conveyance carriage from the side. Since the engagement means for pushing the carriage is provided, the conveyance carriage on which the object is placed can be supported and run from the side, and accordingly, the height of the conveyor apparatus for conveying the object is increased. The thickness can be reduced, and the conveyor device for conveying the object to be coated can be made compact.
[0028]
Since the upper rail on which the main wheel of the transport carriage travels has a substantially circular cross section, the paint does not accumulate on the upper rail in the painting booth, and the travel of the transport carriage is not hindered. In addition, since the rail on which the transport carriage travels is not shaped steel as in the prior art, the rail can be easily manufactured and installed.
[0029]
In addition, a pair of upper and lower rails provided in the painting line is extended from the painting line to the drying process entrance, and an engaging means for engaging the conveyance carriage is provided on the side of the extended upper and lower rails. The connecting conveyor chain is provided, and the engaging means is engaged with the transfer carriage to push the transfer carriage to transfer to the oven conveyor in the drying process. The transfer carriage can be easily transferred.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a coating line P and a drying process D in a coating system according to an embodiment of the present invention.
FIG. 2 is a plan view of a main part in the vicinity of a reversing part of a conveyor chain for side driving.
FIG. 3 is a front view showing the internal structure in the vicinity of the reversing portion of the conveyor chain.
FIG. 4 is a partially enlarged view of the conveyor chain in the vicinity of an inversion portion thereof.
FIG. 5 is a plan view showing a state where the engagement plate is attached.
FIG. 6 is a front view showing the internal structure of the oven conveyor.
[Explanation of symbols]
11 Conveyor devices 12a and 12b for conveying workpieces Upper and lower rails 12c Yokes 12a 'and 12b' Extension rails 13 Carriage carriages 13a Main wheels 13b Guide rollers 13c Support arms 13d Frames 13d Hanging parts 13e Mounting bases 13f Mounting bases 14 For side driving Conveyor chain 14a Engagement plate 14b Drive chain 14c Take-up chain 14d Driven chain 15 Transit conveyor chain 15a Engaging arm 16 Oven conveyor 16a Endless chain 16b, 16c Rail 16d Post 17 Support mechanism 17a, 17b Upper and lower pipes 17c Slat 17d Yoke P3 Painting booth P4 Reversing part D Drying process D1 Drying process entrance D2 Drying furnace

Claims (2)

An object to be coated comprising a pair of upper and lower rails provided in a painting line, a transport carriage that travels by placing the object to be coated on the upper rail, and a side-drive conveyor chain that travels the transport carriage. In the conveyor device for conveyance,
The side-drive conveyor chain is provided on the side of the upper and lower rails and travels around the coating line, and includes engaging means for engaging the transport carriage and pushing the transport carriage.
The transport carriage includes a main wheel that travels on an upper rail having a substantially circular cross section under the load of the transport carriage, and a pair of guide members that abut against both side surfaces of the lower rail. Conveyor device for transporting painted products. A pair of upper and lower rails provided in the painting line is extended from the painting line to the entrance of the drying process, and an engaging means for engaging with the transport carriage is provided on the side of the extended upper and lower rails. 2. The article to be coated according to claim 1, wherein a connecting conveyor chain is provided, and the engaging means is engaged with a conveying carriage to push the conveying carriage to be connected to an oven conveyor in a drying process. Conveyor device for conveyance.

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