JP4476109B2 - Paint booth vertical circulation transfer mechanism - Google Patents

Description

  The present invention relates to a painting booth conveyance mechanism for conveying an automobile body in a painting line of an automobile production line, and more specifically, a painting booth vertical circulation conveyance mechanism for circulating and conveying a carriage dedicated to a painting booth in an upper and lower area of the painting booth. It is about.

Conventionally, as a painting booth transport mechanism for such an automobile body, a conveyor for pulling and running a plurality of conveyor carts equipped with the automobile body on the floor of the painting booth for painting the automobile body with a transportation chain has been provided. There is a thing (refer patent document 1).
JP-A-6-238206 (first page-second page, FIG. 1)

  However, the car body painting booth transport mechanism disclosed in the above-mentioned Patent Document 1 is such that the conveyor cart carrying the automobile body is dried by the painting booth for painting the automobile body and the automobile body painted in this painting booth. Since it is configured to run continuously on a painting line consisting of a drying booth, etc., the dirt on the conveyor cart adhered in the painting booth is brought into the drying booth and the paint residue dried in the drying booth is removed. There is a problem that it becomes dust and reattaches to the car body, deteriorating the quality of the paint, and the maintenance waste that the paint residue that has adhered to the conveyor carriage and hardened must be periodically cleaned and removed. In addition, the conveyor cart carrying the car body protrudes from the car body. There is a problem that further promotes the dirt of the predicate the conveyor truck.

  In addition, in order to return the conveyor cart after transporting the painting line, a new laying area for the continuous return line is required on the same horizontal floor where the painting line was laid, thus saving space on the automobile production line. There is a problem in the line design that cannot be done, and the conveyor cart moves at the same speed in such a continuous painting line and return line on the same horizontal floor surface, so it is returned to other than the conveyor cart equipped with the automobile body There is a problem in the efficiency of moving the carriage that a large number of conveyor carriages are required.

Therefore, an object of the present invention is to solve the problems of the prior art as described above,
Reduces the adhesion of paint on the car body caused by paint stains on the paint booth dedicated truck, demonstrates excellent paint quality of the car body, improves the carriage moving efficiency, and narrows the installation width of the carriage return conveyor in the painting line It is to provide a painting booth vertical circulation transport mechanism that achieves space saving for installation.

  The invention according to the first aspect of the present invention is a coating conveyor for transporting a carriage dedicated to a painting booth equipped with an automobile body from a painting start position to a painting end position, and after the automobile body is delivered to the drying booth side at the painting end position. In the painting booth vertical circulation transport mechanism in which the carriage return conveyor for returning the painting booth carriage to the painting start position is arranged in the upper and lower areas in the painting booth, the painting booth carriage supports the automobile body. Friction that travels by friction between a pair of front and rear wheel support arms that support the wheel support arm, the rear support arm, the front support arm, and the rear support arm, respectively. A front support arm and a rear support arm By being switchable supported between the carriage return state of being parallel arranged orthogonal to the automobile body supported state with the friction bar relative to the friction bar, it solves the problems described above.

  And the painting booth vertical circulation conveyance mechanism which concerns on Claim 2 of this invention is that the return speed of the said carriage return conveyor is higher than the conveyance speed of the said conveyance conveyor in addition to the structure of Claim 1. Thus, the above-described problem is solved.

  Further, the painting booth vertical circulation conveyance mechanism according to claim 3 of the present invention, in addition to the configuration of claim 1 or claim 2, is a traction in which the painting conveyor conveys the wheels while pulling the carriage dedicated to the painting booth. The above-mentioned problem is solved by providing a driving means and a friction driving means for causing the carriage returning conveyor to frictionally travel the carriage dedicated to the painting booth.

  Further, in the painting booth vertical circulation conveyance mechanism according to claim 4 of the present invention, in addition to the configuration of claim 3, the traction drive means is disposed offset on either the left or right of the carriage dedicated to the painting booth. Thus, the above-described problem is solved.

  The “automobile body” to which the painting booth vertical circulation transport mechanism of the present invention is applied refers to the whole or a part of the automobile body, a chassis, and the like.

  The painting booth vertical circulation conveyance mechanism according to claim 1 of the present invention comprises a painting conveyor for carrying a painting booth carriage equipped with an automobile body from a painting start position to a painting end position, and the automobile body is dried at the painting end position. Carriage dedicated to the painting booth after handing over the car body to the drying booth at the painting end position by arranging a carriage return conveyor for returning the painting booth carriage after delivery to the booth side to the painting start position Is returned to the painting start position in the painting booth without entering the drying booth side, so that dirt such as paint adhering to the painting booth carriage is brought to the drying booth side and dried against the automobile body of the paint residue Avoiding re-adhesion, the car body can be finished with excellent paint quality, and the paint adhering to the car dedicated to the paint booth The without drying, it is possible to wash removed by wet state, can be conveniently accomplished maintenance maintenance paint booth dedicated carriage.

In the painting booth vertical circulation transport mechanism according to claim 1 of the present invention, the painting booth dedicated carriage is installed in the painting booth by arranging the painting conveyor and the carriage return conveyor in the upper and lower areas in the painting booth. Since it is possible to circulate vertically in the upper and lower areas of the trolley, it is not necessary to lay the carriage return conveyor on the same horizontal floor that is continuous with the coating transfer conveyor. When the conveyor is disposed below the coating conveyor, it is possible to avoid the influence of the dirt generated on the side of the carriage returning conveyor by the automobile body being coated while being conveyed by the coating conveyor.
And the painting booth dedicated carriage includes a pair of front and rear wheel support arms that run on wheels by supporting the front side support arm, the rear side support arm, the front side support arm, and the rear side support arm for supporting the automobile body, respectively. It is composed of a friction bar that is connected to the pair of front and rear wheel support arms and frictionally runs, so that the paint booth trolley equipped with the car body avoids sticking out of the car body and paint stains on the paint booth trolley Therefore, it is possible to reduce the adhesion of the paint on the automobile body due to the paint stain on the carriage dedicated to the painting booth.
Further, the front side support arm and the rear side support arm are pivotally supported so as to be switchable between a vehicle body support state orthogonal to the friction bar and a carriage return state arranged in parallel with the friction bar. The space saving for narrowing the installation width of the carriage returning conveyor can be achieved.

  Further, in the painting booth vertical circulation transport mechanism according to claim 2 of the present invention, in addition to the effect of the invention of claim 1, the return speed of the carriage return conveyor is higher than the transport speed of the paint conveyor. As a result, the carriage dedicated to the booth on the carriage return conveyor can be reduced, and the carriage moving efficiency of the entire painting line can be increased.

  Further, in the painting booth vertical circulation conveyance mechanism according to claim 3 of the present invention, in addition to the effect exhibited by the invention according to claim 1 or claim 2, the painting conveyor conveys the wheels while drawing the painting booth carriage. It is equipped with traction drive means for running, and the carriage return conveyor has friction drive means for friction running the carriage for exclusive use of the coating booth, so that the return speed of the carriage return conveyor is higher than the transfer speed of the transfer conveyor for painting. High speed can be reliably achieved.

  In addition, in the painting booth vertical circulation transport mechanism according to claim 4 of the present invention, in addition to the effect exhibited by the invention of claim 3, the traction drive means is offset on either the left or right of the carriage dedicated to the painting booth. This reduces the overall height of the painting booth vertical circulation transfer mechanism, and when the carriage return conveyor is placed under the floor in the lower area of the painting booth, the carriage return conveyor is The depth of the pit for installation can be reduced, and the maintenance can be simplified.

  The present invention relates to a coating conveyor for transporting a carriage dedicated to a painting booth equipped with an automobile body from a painting start position to a painting end position, and a carriage dedicated to a painting booth after the automobile body is delivered to the drying booth side at the painting end position. In the painting booth vertical circulation transfer mechanism where the carriage return conveyor returning to the painting start position is arranged in the upper and lower areas in the painting booth, the painting booth carriage supports the front side support arm and the rear side support. It comprises a pair of front and rear wheel support arms that support the arm, the front side support arm, and the rear side support arm, respectively, and a friction bar that is connected between the wheel support arms and that frictionally travels. In addition, the front support arm and the rear support arm are perpendicular to the friction bar. The car body is excellently painted by reducing the adhesion of paint on the car body due to paint stains on the paint booth truck, which is pivotally supported between the car body support state and the carriage return state parallel to the friction bar. It achieves quality, improves the efficiency of moving the carriage, and achieves space saving for narrowing the installation width of the carriage return conveyor in the painting line. There is no problem.

  In addition, as for the arrangement form of the conveyor for transporting the carriage and the conveyor for returning the carriage used in the present invention, if the upper and lower areas in the coating booth are separated from each other vertically, the vertical arrangement relation between the conveyor for transporting the carriage and the carriage for returning the carriage is Any of these may be used, but preferably, when the carriage return conveyor is disposed below the coating conveyor, the coating is carried while being conveyed by the coating conveyor without the need to install separate upper and lower partition walls. The automobile body is not affected by dirt generated on the carriage returning conveyor side.

  And, any connecting means for the carriage for exclusive use of the painting booth between the painting conveying conveyor and the carriage returning conveyor can be used. However, when the lifting lifter is used, the connecting space is made compact. Can be installed.

  Also, regarding the arm lengths of the front side support arm, rear side support arm, and front and rear pair of wheel support arms of the paint booth dedicated carriage used in the present invention, any size relationship is possible as long as it can be transferred by the paint transfer conveyor and the carriage return conveyor. However, if the arm length of the wheel support arm is shorter than the arm length of the front support arm and rear support arm, it is easier to avoid paint stains during painting, and smooth wheel running can be realized. In addition, it is possible to further reduce the space by narrowing the installation width of the carriage return conveyor during return.

Further, any traction drive means for the paint booth trolley can be used as long as the paint booth trolley is allowed to run while pulling the paint booth trolley. You may comprise by the free claw and the dog with which the bottom part of the cart for exclusive use of the painting booth which can be engaged with this claw is equipped.
Further, the friction drive means for the paint booth dedicated carriage may be any means as long as it allows the paint booth dedicated truck to run in friction, for example, a friction roller that contacts the friction bar and drives the friction. Adopting a drive form with an urging spring or air type bellows attached to the machine frame on the conveyor return conveyor side so that the friction roller can be raised and lowered with respect to the friction bar No matter what.

Hereinafter, a painting booth vertical circulation conveyance mechanism 100 according to an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1 to FIG. 5 relate to a painting booth vertical circulation conveyance mechanism which is an embodiment of the present invention, and FIG. 1 schematically illustrates a painting booth vertical circulation conveyance mechanism which is an embodiment of the present invention. FIG. 2 is a perspective view of the painting booth dedicated carriage viewed obliquely from above, FIG. 3 is a plan view of the painting booth dedicated carriage, and FIG. 4 is a conveying conveyor for painting. FIG. 5 is a view showing the relationship between the friction drive means of the carriage returning conveyor and the paint booth carriage.

First, as shown in FIG. 1, the painting booth vertical circulation conveyance mechanism 100 of the present embodiment sequentially conveys a large number of painting booth dedicated carriages 110 equipped with an automobile body W from a painting start position P1 to a painting end position P2. The transport conveyor 120 is laid in the upper area in the painting booth PB, and the painting booth carriage 110 after the automobile body W is transferred to the drying booth DB side at the painting end position P2 is sequentially returned to the painting start position P1. The carriage returning conveyor 130 is laid in the lower area in the painting booth PB, and a number of painting booth dedicated carriages 110 are vertically circulated and conveyed in the upper and lower areas of the painting booth PB.
That is, in this embodiment, the coating booth carriage 110 that is soiled due to adhesion of the paint on the coating conveyor 120 is returned by the carriage return conveyor 130 disposed in the lower area below the coating conveyor 120. Since the layout is designed, dirt such as paint residue is not adhered to the automobile body W that is being painted on the transport conveyor 120 for painting.
In addition, the code | symbol 140 shown in FIG. 1 is the raising / lowering lifter apparatus used as the connection means of the coating booth exclusive trolley | bogie 110 between the conveyance conveyor 120 for coating, and the conveyor 130 for trolley | bogie return.

  In the painting booth vertical circulation conveyance mechanism 100 of the present embodiment, the carriage return conveyor 130 is configured such that the return speed V2 of the carriage return conveyor 130 is higher than the conveyance speed V1 of the painting conveyor 120. The number of booth carriages 110 returned above is reduced, and the carriage moving efficiency of the booth carriage 110 as a whole painting line is increased.

A specific structure of the booth cart 110 shown in FIGS. 2 to 3 will be described in detail.
In other words, the booth dedicated carriage 110 used in this embodiment supports the front side support arm 111 and the rear side support arm 112 that support the automobile body W, and the front side support arm 111 and the rear side support arm 112, respectively. And a pair of front and rear wheel support arms 113 and 113 that run on the wheels, and a friction bar 114 that is connected to the front and rear wheel support arms 113 and 113 and that runs on the friction. In order not to protrude from the body W, paint stains on the painting booth dedicated carriage 110 are suppressed.
2 to 3 is a wheel 115 attached to the wheel support arm 113, and reference numeral 121 is a pair of left and right transport rails that constitute a part of the coating transport conveyor 120 and extend in the transport direction. Yes, wheels 115, 115, 115, 115 on the painting booth carriage 110 side are transported on the pair of left and right transport rails 121, 121.

The front-side support arm 111 and the rear-side support arm 112 are pivotally supported so as to be switchable between a vehicle body support state orthogonal to the friction bar 114 and a carriage return state arranged in parallel with the friction bar 114, The installation width of the carriage returning conveyor 130 can be reduced and installed.
2 to 3 is a switching lever for switching the front side support arm 111 and the rear side support arm 112 between a vehicle body support state and a carriage return state by a switching guide (not shown). is there.

A specific conveyor structure of the coating transfer conveyor 120 shown in FIGS. 4 to 5 will be described in detail.
That is, as shown in FIG. 4, the coating conveyor 120 used in this embodiment is a traction drive that causes the coating booth dedicated carriage 110 to run on wheels in addition to the pair of left and right conveying rails 121 and 121 described above. The traction drive means 122 includes a conveying chain 122b that is driven by a driving sprocket 122a and a locking claw 122c that can be raised and lowered at a predetermined interval on the upper surface of the conveying chain 122b. The claw 122c is driven by being engaged with a dog (not shown) provided on the bottom side of the painting booth cart 110.
Further, as shown in FIGS. 4 to 5, the traction drive unit 122 described above is offset on one side of the coating booth exclusive carriage 110 so as to reduce the overall height dimension of the coating booth vertical circulation transport mechanism 100. It has become.
In addition, the code | symbol 122d of FIG. 4 is a traction drive motor for driving the drive sprocket 122a.

A specific conveyor structure of the carriage return conveyor 130 shown in FIGS. 4 to 5 will be described in detail.
That is, the carriage returning conveyor 130 used in the present embodiment is, as shown in FIG. 5, transported by the aforementioned coating conveyor 120 in order to eliminate the left and right runout that tends to occur when the painting booth carriage 110 is returned. A pair of left and right guide rails 131, 131 having the same width as the rails 121, 121 are provided, and friction drive means 132 for causing the paint booth carriage 110 to frictionally travel is provided. Further, the friction drive means 132 contacts the friction bar 114. A friction roller 132a that is in contact with the friction drive and a friction drive motor 132b that rotationally drives the friction roller 132a are provided.

  The coating booth vertical circulation transport mechanism 100 of the present embodiment configured as described above starts coating the coating booth dedicated carriage 110 on which the automobile body W is mounted by the coating transport conveyor 120 laid in the upper area of the coating booth PB. After carrying out various painting processes while transporting from position P1 to painting end position P2, the vehicle body W is handed over to the drying booth DB side at the painting end position P2 and the carriage laid in the lower area of the painting booth PB is returned. The coating booth carriage 110 after being delivered by the conveyor 130 can be returned to the coating start position P1.

  Therefore, the painting booth vertical circulation transport mechanism 100 of the present embodiment is configured so that the painting booth dedicated carriage 110 after the automobile body W is delivered to the drying booth DB side at the painting end position P2 does not enter the drying booth DB side. Since it is used exclusively in the so-called painting booth PB, which is returned to the painting start position P1 in the PB, the paint, etc. adhering to the painting booth dedicated carriage 110 is brought to the drying booth DB side and dried. By avoiding the re-attachment of the paint residue to the car body W, the car body W can be finished with excellent paint quality, and the paint adhering to the paint booth carriage 110 can be washed in a wet state without drying. Since it can be removed, maintenance of the painting booth cart 110 can be easily achieved, and the painting booth cart 110 can be Since it can be vertically circulated in the upper and lower areas of the loading booth PB, it is not necessary to lay the carriage returning conveyor 130 on the same horizontal floor continuous with the coating conveying conveyor 120, and the space for the painting line can be saved. The effect is enormous.

Schematic of the painting booth vertical circulation conveyance mechanism which is one Example of this invention. The perspective view which looked at the trolley for exclusive use of the painting booth used for the present example from the slanting upper part. The top view of the trolley | bogie for coating booths used for the present Example. Fig. 3 is a diagram showing the relationship between the traction drive means of the painting conveyor and the carriage dedicated to the painting booth. The related figure of the friction drive means of the trolley return conveyor and the trolley for the painting booth.

DESCRIPTION OF SYMBOLS 100 ... Paint booth vertical circulation conveyance mechanism 110 ... Paint booth exclusive cart 111 ... Front side support arm 112 ... Rear side support arm 113 ... Wheel support arm 114 ... Friction bar 115 ... · Wheel 116 ··· Switching lever 120 ··· Conveyor for painting 121 ··· Conveyor rail 122 ··· Traction drive means 122a ··· Drive sprocket 122b ··· Conveyor chain 122c · · · Claw 122d · ··· Traction drive motor 130 ··· Dolly return conveyor 131 ··· Guide rail 132 · · · Friction drive means 132a · · · Friction roller 132b · · · Friction drive motor 140 · · · Lifting / lifting device W .. Car body PB Instrumentation booth P1 ··· painting start position P2 ··· painting end position DB ··· dry booth V1 ··· conveying speed V2 ··· return rate

Claims (4)

The painting transport conveyor that transports the carriage dedicated to the painting booth equipped with the automobile body from the painting start position to the painting end position, and the carriage dedicated to the painting booth after the automobile body is transferred to the drying booth at the painting completion position are set to the painting start position. In the painting booth vertical circulation transport mechanism where the carriage return conveyor to be returned is arranged in the upper and lower areas in the painting booth,
A pair of front and rear wheel support arms that run on wheels while the carriage dedicated to the painting booth supports a front side support arm, a rear side support arm, the front side support arm, and a rear side support arm that support the automobile body, It consists of a friction bar that is connected between the wheel support arms and runs friction,
The front-side support arm and the rear-side support arm are pivotally supported so as to be switchable between a vehicle body support state orthogonal to the friction bar and a carriage return state arranged in parallel with the friction bar. Paint booth vertical circulation transfer mechanism.   The coating booth vertical circulation conveyance mechanism according to claim 1, wherein a return speed of the carriage return conveyor is higher than a conveyance speed of the coating conveyor.   The coating conveying conveyor includes a traction driving means for moving the wheel while pulling the coating booth dedicated carriage, and the carriage returning conveyor includes a friction driving means for causing the coating booth dedicated carriage to frictionally travel. The coating booth vertical circulation conveyance mechanism according to claim 1 or 2.   4. The painting booth vertical circulation transport mechanism according to claim 3, wherein the traction drive means is offset on either the left or right side of the painting booth carriage.

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