JP3615876B2 - Painting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, the pre-treatment and coating are performed while a workpiece such as an automobile body is transported by an overhead conveyor, and then dried on the floor conveyor, and then transported to the next process after drying. Regarding equipment.
[0002]
[Prior art]
FIGS. 3 and 4 show the layout of a conventional coating facility for performing electrodeposition coating, its running state and storage state, and it is conveyed from the previous process along the overhead conveyor 42 formed on the circulation track 41. The workpiece W is loaded at a predetermined arrival position P. ₁ A pre-treatment device 44 that performs pre-treatment such as cleaning, degreasing, and chemical conversion film treatment on the surface of the work W that is loaded on the loading device 43, and the pre-treatment device 44. The electrodeposition coating apparatus 45 for forming an electrodeposition coating film on the surface of the workpiece W that has been subjected to the pretreatment in step S3, and the workpiece W that has been subjected to electrodeposition coating by the electrodeposition coating apparatus 45 are transferred to a predetermined replacement position P. ₂ Thus, a transfer device 48 is disposed in order to transfer to the carriage T of the floor conveyor 47 that is removed from the hanger H and travels in the drying furnace 46.
[0003]
The floor conveyor 47 has the replacement position P described above. ₂ Then, the carriage T on which the workpiece W has been transferred is carried into the drying furnace 46, the dried workpiece W is transferred to the next process while being placed on the carriage T, and the carriage T that has been emptied in the next process is rewritten as described above. Position P ₂ A circulation track 47a is formed to return to the bottom.
In addition, the transfer position P from the next process of the floor conveyor 47 ₂ The spare track storage track 47b for storing the carts T for the number of workpieces W that are being transported by the overhead conveyor 42 and not yet transported to the drying furnace 46 in an empty state is branched to the circulation track 47a that returns to FIG. All the workpieces W transported by the overhead conveyor 42 and the floor conveyor 47 are stored on the carriage T in the circulation track 47a from the outlet of the drying furnace 46 to the next process. A truck storage track 47c is formed by branching.
[0004]
The carriage storage track 47c finishes drying the workpiece W conveyed by the floor conveyor 47 and places it on the carriage T when conveyance of the workpiece W from the previous process and conveyance to the next process is stopped. In addition to the storage, the work W transported by the overhead conveyor 42 is pre-processed, the electrodeposition coating is completed, and the work is transferred to the drying furnace 46 sequentially after being transferred to the cart T stored in the spare cart storage track 47b. After the drying is finished, the storage is carried on the cart T.
[0005]
The overhead conveyor 42 is a loop-shaped storage for storing empty hangers H by transferring the work W to the carriage T of the floor conveyor 47 when the conveyance of the work W from the previous process is stopped. The empty hanger storage track 41a is in the change position P described above. ₂ To the arrival position P ₁ When the empty hanger H is formed in the pretreatment device 44 or the electrodeposition device 45 to prevent corrosion and the conveyance of the workpiece W from the previous process is started. Empty hanger H arrives at position P ₁ It can be sent immediately.
[0006]
According to this, while the conveyance line between each process is operated, each hanger H is circulated on the overhead conveyor 42 and the pre-processing device 44 is conveyed while conveying the workpiece W loaded by the loading device 43. After the electrodeposition coating is performed by the electrodeposition coating device 45, the hanger H that is emptied by being transferred to the carriage T of the work W floor conveyor 47 by the transfer device 48 is again loaded at the loading position P. ₁ The following work W is received and processed continuously.
Then, in the floor conveyor 47, an empty cart T returning from the next step to the circulation track 47a or a spare cart T stored in the spare cart storage track 47b is replaced with the replacement position P. ₂ The workpiece W transferred to the carriage T by the transfer device 48 is carried into the drying furnace 46, and is transferred to the next process as it is after the drying.
[0007]
Here, when the work of one day is finished, the transfer line between the respective processes is stopped, and the transfer of the work W from the previous process and the transfer to the next process are stopped, the work W in the drying furnace 46 is The workpiece W stored in the cart storage track 47c while being placed on the cart T, and being in the pretreatment device 44 and the electrodeposition coating device 45, finishes the pretreatment and electrodeposition coating, and is transferred to the floor conveyor by the transfer device 48. 47, and is stored in the truck storage track 47c while being placed on the spare carriage T, and the work W is placed on the carriage T and is empty. The hanger H that has become is stored in the empty hanger storage track 41a.
Then, in the next morning, when the transfer of the workpiece W from the previous process and the transfer to the next process is started, the empty hanger H stored in the empty hanger storage track 41a is sent onto the circulation track 41 of the overhead conveyor 42 to be loaded. Position P ₁ At the same time, the workpieces W transported from the previous process are sequentially received and the painting operation is started. At the same time, the workpieces W stored in the cart storage track 47c are sequentially transported to the next process together with the cart T, and the overhead conveyor 42 The top workpiece W transported at the transfer position P ₂ The empty carriage T returned from the next process is sent to the spare carriage storage track 47b until it arrives at the next process until it is stored.
[0008]
According to such a painting facility, even if the conveyance of the workpiece W from the previous process and the conveyance to the next process are stopped, the painting is finished for all the workpieces W conveyed by the overhead conveyor 42 and the floor conveyor 47. Since the coating film can be stored in a dry state, the workpiece W can be left during pretreatment or at the end of pretreatment, left during electrodeposition coating or at the end of painting, or dried. The paint quality is kept constant without being left unfinished.
[0009]
[Problems to be solved by the invention]
However, in this case, a space for storing an empty carriage T that is not used during running, which is preprocessed, electrodeposition-coated, and dried while transporting the workpiece W, and transporting the workpiece W from the previous process and the next process. A factory with limited space for storing all the workpieces W transported by the overhead conveyor 42 and the floor conveyor 47 on the carriage T and storing empty hangers H at the time when the transport to the floor is stopped There was a problem that it had to be secured separately on the site.
For example, if 49 workpieces W are loaded into the pretreatment device 44 and the electrodeposition coating device 45, 24 workpieces W are loaded into the drying furnace 46, and the storage pitch of the hanger H and the carriage T is about 7 m, The total length of the hanger storage track 42a is 49 × 7≈350 m, the total length of the spare cart storage track 47b is 49 × 7≈350 m, the total length of the cart storage track 47c is (49 + 24) × 7≈520 m, and all the storage tracks 42a , 47b, 47c reaches 1200 to 1300 m.
Further, since all the workpieces W transported by the overhead conveyor 42 and the floor conveyor 47 are stored in a state of being placed on the cart T, the cart T for transporting the workpiece W in the drying furnace 46, At least 49 + 24 = 73 trolleys T are required for the spare trolleys T on which the number of works W transported in the pretreatment device 44 and the electrodeposition coating device 45 are placed.
As described above, since a large number of carts T for storing all the workpieces W and a large storage space are required, there is a problem that the equipment cost increases.
[0010]
Further, when the carriage T transports the workpiece W to the next process, the carriage T takes the heat of the drying furnace 46 to the outside, transfers the workpiece W to the next process, and then returns to the room temperature after being cooled. When it was carried in, it was heated again to take away a large amount of heat in the furnace, and there was a problem that the heat consumption of the drying furnace 46 was large and the running cost increased.
[0011]
Therefore, when storing the same number of works, the present invention reduces the storage space and equipment to improve the space utilization efficiency, and at the same time reduces the equipment cost and further saves the heat consumption of the drying furnace. It is a technical challenge to reduce running costs.
[0012]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a loading device for loading a workpiece conveyed from a previous process onto a hanger of the overhead conveyor at a predetermined loading position along an overhead conveyor formed on a circulation track, A pretreatment device for pretreating the surface of a work loaded by the landing device, a coating device for immersing a work that has been pretreated by the pretreatment device in paint, and attaching the paint to the surface, and the paint device An elevator device is installed in order to remove the work with paint on the floor from the overhead conveyor hangers at a predetermined replacement position and place it on the floor conveyor carriage that runs in the drying furnace. While performing pre-treatment and painting, transfer the work on the floor conveyor carriage and dry it while transporting, In a painting facility configured to be transported to the next process after drying, the floor conveyor is formed in a circulation track that travels through the drying furnace and returns from the drying furnace outlet to the drying furnace inlet through the replacement position described above. In addition, along the circulation path of the floor conveyor from the outlet of the drying furnace to the replacement position, the elevator that returns the work, which has been dried in the drying furnace, from the floor conveyor cart to the overhead conveyor hanger again at a predetermined return position. An apparatus is installed, and the work loaded on the hanger at the previous return position is lowered from the overhead conveyor at a predetermined unloading position along the circulation path of the overhead conveyor returning from the previous return position to the arrival position. Unloading device is installed in order to transfer to the conveyor to be transferred to the process, and transferred on the circulation track of the overhead conveyor A loop-shaped first storage track for storing a predetermined number of hangers in a suspended state on the hanger is provided between the retraction position and the unloading position of the overhead conveyor on the drawing side and the sending side. A loop-shaped second loop that is laid so as to diverge and join the circulation track, has a spare hanger for a predetermined number of carriages that travel on the circulation track of the floor conveyor, and stores a work suspended on the spare hanger. The storage track branches off from the circulating track between the retracting position and the unloading position of the overhead conveyor, and the storage side joins the circulating track before the overhead conveyor returning position. When the work is brought in from the previous process and unloaded to the next process, the overhead conveyor is After finishing pre-treatment, painting and drying for all the workpieces being conveyed by the conveyor and floor conveyor, the required number of workpieces on the top side are placed on the hanger at the return position described above and then suspended on the hanger. The state is stored in the first storage track, and after the remaining work is placed on the spare hanger, it is stored in the second storage track in a state suspended on the spare hanger. It is characterized by that.
[0013]
According to the present invention, after the workpiece conveyed from the previous process is loaded on the hanger of the overhead conveyor at the loading position, the workpiece surface is pretreated by the pretreatment device while being conveyed by the overhead conveyor, and the coating apparatus Then, a coating film is formed on the workpiece surface, and then placed on the floor conveyor carriage at the loading position, loaded into the drying furnace and dried, and then loaded again on the overhead conveyor hanger at the loading position. Returned, unloaded from the hanger at the unloading position and transported to the next process.
At this time, the floor conveyor is formed in a circulation track that travels in the drying furnace and passes from the drying furnace outlet to the return position and the replacement position and returns to the drying furnace inlet, and the carriage is not moved to the next process. Since it is taken out from the vehicle and passes through the loading position and the loading position and is immediately carried into the drying furnace, it is circulated through the drying furnace again before being cooled to room temperature. Therefore, the amount of heat in the drying furnace taken away by the cart is small, the running cost is reduced, the overall length of the floor conveyor is short, and the number of carts is reduced, so that the equipment cost can be reduced.
[0014]
Also, when the work of the day is completed and the transfer line between each process is stopped, all the workpieces being transferred by each conveyor are pre-processed, painted and dried, and the required number of workpieces preceding them are completed. Is stored on the first storage track in a state of being hung on the hanger transferred on the circulation track of the overhead conveyor and suspended on the hanger, and the subsequent workpiece is loaded on the spare hanger and suspended on the hanger. Stored in the second storage orbit.
In this case, it is sufficient for the first and second storage tracks to be long enough to store all the workpieces being transferred by each conveyor when the transfer line between each process is stopped. In addition to being transported on the circulation track of the overhead conveyor, it is only necessary to prepare spare hangers for a predetermined number of carts that travel on the circulation track of the floor conveyor. There is no space to store the carts in the state, and the number of carts is drastically reduced, so that the space utilization efficiency can be greatly improved, and at the same time, the equipment required for storage can be reduced and the facility cost can be reduced. .
[0015]
The next morning, when the transfer line between the processes is activated, the hangers stored in the first storage track are sequentially sent from the delivery side onto the circulation track of the overhead conveyor and transferred to the unloading position. At the same time, the loading device unloads the workpiece from the overhead conveyor hanger and transfers it to the conveyor to be transferred to the next process. At the same time, the hanger stored in the second storage track is sequentially sent from the delivery side onto the overhead conveyor circulation track, The hanger is transferred to the unloading position directly or via the first storage track.
The hanger that is emptied after unloading the workpiece at the unloading position is transferred to the arrival position, and the arrival position P ₁ Then, the workpieces transported from the previous process are sequentially received, and the pretreatment and painting operations are started.
Then, when the hanger arrives at the transfer position, after the work is transferred to the floor conveyor carriage, the empty hangers are sequentially sent to the second storage track, and the empty hangers for the number of spare hangers are used as spare hangers. After the storage, the subsequent hangers are transferred to the floor conveyor cart at the transfer position, and then the work carried from the drying furnace is transferred back to the unloading position and transferred to the unloading position. The workpiece that has been transported from the previous process at the position is received.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing a layout of a painting facility according to the present invention and its running state, and FIG. 2 is a plan view showing its storage state.
[0017]
In the painting facility 1 according to the present example, an overhead conveyor 2 that suspends and conveys a work W on a floor with a hanger H is formed on a predetermined circulation track 3, and is conveyed from the previous process along the overhead conveyor 2. Arrival position P of workpiece W coming ₁ , A pre-treatment device 5 that performs pre-treatment such as cleaning, degreasing, and chemical conversion coating on the surface of the work W that is loaded by the loading device 4, and the pre-treatment device 5. The electrodeposition coating apparatus 6 for forming an electrodeposition coating film on the surface of the workpiece W that has been subjected to the pretreatment in step S3, and the workpiece W that has been subjected to electrodeposition coating by the electrodeposition coating apparatus 6 are transferred to the transfer position P. ₂ An elevator device 7 is arranged to be lowered from the overhead conveyor 2 downstairs.
[0018]
Under the floor, a floor conveyor 9 that travels the carriage T on which the workpiece W is placed at a predetermined interval travels in the drying furnace 8 and circulates around the elevator apparatus 7 from the drying furnace outlet 8out and returns to the drying furnace inlet 8in. The elevator device 7 is formed on the track 10, and the front side of the elevator device 7 is at the replacement position P. ₂ Then, the work W, which has been subjected to electrodeposition coating by the electrodeposition coating apparatus 6, is unloaded from the hanger H of the overhead conveyor 2 on the floor and is transferred to the carriage T of the floor conveyor 9 laid down the floor, and the back side is loaded. Return position P ₃ Thus, the work W finished to be dried in the drying furnace 8 is lifted up from the carriage T of the floor conveyor 9 on the lower floor and is loaded on the hanger H of the overhead conveyor 2 on the floor.
[0019]
In addition, the circulation track 3 of the overhead conveyor 2 travels around the elevator device 7 to change the position P described above. ₂ And the repositioning position P ₃ Arrival position P ₁ And return position P ₃ And arrival position P ₁ Between the return positions P described above ₃ The workpiece W returned to the hanger H at the predetermined unloading position P ₄ Then, an unloading device 12 is disposed in order for the conveyor 11 to be unloaded from the overhead conveyor 2 and transferred to the next process.
[0020]
A loop-shaped loop formed in a length that can be stored in a state where a predetermined number (eg, 49) of hangers H transferred on the circulation track 3 of the overhead conveyor 2 are suspended on the hangers H. The first storage track 13 has its pull-in side 13a and sending-out side 13b at the return position P of the overhead conveyor 2. ₃ And unloading position P ₄ Is laid so as to be branched and merged into the circulation track 3. Further, a second loop-shaped second hanger Hs corresponding to the number of the carriages T of the floor conveyor 9 (for example, 24) is formed to have a length that allows storage with the workpiece W suspended from the spare hanger Hs. The storage track 14 of the overhead conveyor 2 has a pull-in side 14a at the return position P of the overhead conveyor 2. ₃ And unloading position P ₄ Between the circulation track 3 and the delivery side 14b of the overhead conveyor 2 at the turn-back position P. ₂ It is laid so that it may merge with the circulation track 3 before.
[0021]
The above is an example configuration of the present invention, and its operation will be described next.
For example, the number of hangers H transferred on the circulation track 3 of the overhead conveyor 2 is 49, the number of carriages T traveling on the circulation track 10 of the floor conveyor 9 is 24, and the storage pitch is about 7 m. The case will be described.
First, while the transfer line between each process of the factory is operated and the workpiece W is transferred from the previous process and transferred to the next process, the arrival position P ₁ While the workpiece W loaded on the hanger H of the overhead conveyor 2 is transported up the floor, the surface of the workpiece W is pretreated by the pretreatment device 5, and the electrodeposition coating film 6 is applied to the surface of the workpiece W by the electrodeposition coating device 6. Is formed.
Next, the transfer position P ₂ Arrives at the elevator apparatus 7, is unloaded from the hanger H of the overhead conveyor 2, is transferred to the carriage T of the floor conveyor 9 below the floor, is carried into the drying furnace 8, is dried, and then is taken out from the drying furnace 8. Repositioning position P ₃ After the work W is lifted up by the elevator device 7 and loaded again on the hanger H of the overhead conveyor 2, the unloading position P ₄ Is unloaded from the overhead conveyor 2 by the unloading device 12 and transferred to the conveyor 11 to be transported to the next process.
[0022]
At this time, the floor conveyor 9 is formed in a circulation track 10 that travels in the drying furnace 8 and travels around the elevator device 7 from the drying furnace outlet 8out and immediately returns to the drying furnace inlet 8in. It is carried out of the inside of the drying furnace 8 only to transfer / return the overhead conveyor 2 and the workpiece W, and the carriage T is not moved to the next process and is laid outside the drying furnace 8. Therefore, before the carriage T is cooled to the room temperature, it travels again in the drying furnace 8. Therefore, the amount of heat in the drying furnace 8 taken away by the cart T is reduced, and the running cost is reduced. Since the number of carts T is only the number of vehicles traveling on the short circulation track 10 of the floor conveyor 9, the equipment cost can be reduced.
[0023]
Then, when the work of the day is completed, the transfer line between the processes is stopped, and the transfer from the previous process and the transfer to the next process of the workpiece are stopped, the transfer is performed by the conveyors 2 and 9. All the workpieces W that are being dried in the drying furnace 8 are finished drying, and then the workpieces that are being electrodeposited by the electrodeposition coating apparatus 6 are placed at the replacement position P. ₂ Then, after being transferred to the carriage T of the floor conveyor 9 and finished drying in the drying furnace 8, the pre-processing device 5 that has been pre-processed finishes the electrodeposition coating in the electrodeposition coating device 6 and changes to the replacement position P. ₂ After being transferred to the carriage T of the floor conveyor 9 and finished drying in the drying furnace 8, the return position P ₃ Then, it is replaced with the hanger H or the spare hanger Hs of the overhead conveyor 2, and after pre-processing, painting, and drying, it is stored in the first and second storage tracks 13 and 14.
At this time, among the 73 workpieces transported by the floor conveyor 9 and the overhead conveyor 2, 49 preceding workpieces W that have finished drying are placed on the first storage track 13 at the return position P. ₃ Then, the paper is sequentially loaded on the hanger H of the overhead conveyor 2 and is sent from the pull-in side 13a and stored in a state of being hung on the hanger H.
In addition, the second storage track 14 has a return position P of the circulation track 3 from its sending side 14b. ₃ Next, the 24 workpieces W which have been dried are put back on the spare hanger Hs sent out to the spare hanger Hs, and are suspended from the spare hanger Hs and sent from the retracting side 14a for storage.
[0024]
In this case, if the storage pitch is about 7 m, the first storage track 13 needs a distance of 49 × 7 m≈350 m to store 49 workpieces W, and the second storage track 14 has 24 Since the distance of 24 units x 7m ≒ 170m is required to store the work W for the platform, it is sufficient to secure about 520m with the total extension, and the necessary space for storing all the workpieces W on the cart Because there is no space to store the bogies and no space to store the bogies with all the workpieces loaded, the total length of the storage track is about ½ that of conventional painting equipment. The utilization efficiency of can be greatly improved.
In addition, 49 hangers H and 24 spare hangers Hs are required, but because 49 hangers H are used for pre-processing and electrodeposition coating of the workpiece W, it is increased for storage. The number of hangers to be used is only 24 for the spare hangers Hs, and 24 trolleys T are sufficient to dry the workpieces W. Compared to the painting equipment for storing all the workpieces W on the trolleys. Although the number of hangers increases by 24, the number of trolleys decreases by 49, so that the equipment cost is reduced as a whole.
[0025]
Then, the next morning, when the transfer line between the processes is activated, the hanger H stored in the first storage track 13 is sequentially sent out from the delivery side 13b onto the circulation track 3 of the overhead conveyor 2 to unload the position. P ₄ To the unloading device P ₄ Then, the workpiece W is unloaded from the hanger H of the overhead conveyor 2 and transferred to the conveyor 11 to be transferred to the next process, and then the hanger H stored in the second storage track 14 is circulated from the delivery side 14b to the overhead conveyor 2 The unloading position P is sent out sequentially on the track 3 and the hanger H is directly or via the first storage track 13. ₄ Until the workpiece W is unloaded and then the arrival position P is reached. ₁ Transfer to
Arrival position P ₁ Then, the leading hanger H is the arrival position P. ₁ When the value reaches, workpieces W conveyed from the previous process are sequentially loaded, and pretreatment and painting work are started.
And the transfer position P ₂ Then, the hangers H that have been emptied are sequentially transferred to the second storage track 14, and the hangers Hs corresponding to the number of spare hangers Hs are stored as spare hangers Hs. Subsequent hangers H are located at the transfer position P. ₂ After the transfer to the carriage T of the floor conveyor 9, the return position P ₃ The work W carried out from the drying furnace 8 is put back and unloaded at the unloading position P. ₄ To the arrival position P ₁ The workpiece that has been transported to and transported from the previous process is loaded and the painting operation is continued.
[0026]
Thus, according to this example, since the work W is stored in a state suspended from the hanger H, not only the space can be saved, but also the space for storing the empty carriage and the work are placed. The space for storing the trolleys is no longer necessary, and the number of trolleys is drastically reduced, so that the space utilization efficiency can be greatly improved. At the same time, the equipment required for storage can be reduced to reduce the equipment cost.
In addition, since the carriage T of the floor conveyor 9 is moved out of the drying furnace 8 without traveling to the next process, and is immediately carried into the drying furnace 8 around the elevator apparatus 7, before the carriage T is cooled to room temperature. Then, the vehicle travels in the drying furnace 8 again. Accordingly, the amount of heat in the drying furnace 8 taken away by the cart T is reduced, and the running cost is reduced. At the same time, the number of carts T is only a few minutes for running on the floor conveyor 9, so that the equipment cost can be reduced.
[0027]
In the above description, the coating equipment when the electrodeposition coating apparatus is used as the coating apparatus has been described. However, the present invention is not limited to this, and for example, a coating apparatus that performs dip coating can also be used.
Moreover, in this example, using one elevator apparatus 7, the front side replacement position P is used. ₂ Then, the workpiece W is transferred from the hanger H of the overhead conveyor 2 to the carriage T of the floor conveyor 9, and the return position P on the back side. ₃ However, the present invention is not limited to this, and separate elevator devices may be provided at respective positions.
Further, the storage tracks 13 and 14 are not limited to forming separate loops, but may be formed in a loop formed by sharing the pull-in sides 13a and 14a and branching out the sending sides 13b and 14b.
[0028]
【The invention's effect】
As described above, according to the present invention, when storing the same number of workpieces, the storage space of the hanger is slightly expanded, but there is a space for storing empty carts and a space for storing carts with workpieces. In addition, since the number of trucks is drastically reduced, the use efficiency of the space can be greatly improved. At the same time, the equipment required for storage can be reduced to reduce the equipment cost. The cart that runs in the drying furnace is formed so that it returns to the drying furnace immediately without transporting the workpiece to the next process, so it can save the heat consumption of the drying furnace and reduce the running cost. Very effective.
[Brief description of the drawings]
FIG. 1 is a plan view showing a layout of a painting facility according to the present invention and a running state thereof.
FIG. 2 is a plan view showing the storage state.
FIG. 3 is a plan view showing a layout of a conventional facility and a running state thereof.
FIG. 4 is a plan view showing the storage state.
[Explanation of symbols]
1. Painting equipment
W ... Work
2 ... Overhead conveyor
H ... Hanger
3. Circulating orbit
4 .. Arrival device
5... Pretreatment device
6 ... Electrodeposition coating equipment
7. Elevator device
9 ... Floor conveyor
T ・ ・ ・ ・ Car
8 ... Drying furnace
8out ・ ・ Drying furnace outlet
8in ・ ・ Drying furnace entrance
10. Circulating orbit
11 ... Conveyor
12. Unloading device
13. First storage orbit
14 ... Second storage orbit
13a, 14a ... Pull-in side
13b, 14b ... sending side
P ₁ ... arrival position
P ₂ ... Replacement position
P ₃ ... Return position
P ₄ ... Unloading position

Claims (1)

The workpiece (W) conveyed from the previous process along the overhead conveyor (2) formed on the circulation track (3) is hung (H) of the overhead conveyor (2) at a predetermined arrival position (P ₁ ). A pre-treatment device (5) for pre-treating the surface of the workpiece (W) loaded by the landing device (4), and the pre-treatment device (5). The coating device (6) for immersing the workpiece (W) in the coating material and attaching the coating material to the surface of the workpiece (W), and the workpiece (W) to which the coating material has been applied by the coating device (6) are placed at a predetermined replacement position (P ₂ ) And an elevator device (7) that is unloaded from the hanger (H) of the overhead conveyor (2) and transferred to the carriage (T) of the floor conveyor (9) that travels in the drying furnace (8). Overhead work (W) After pre-processing and painting while transporting with the bear (2), the work (W) is transferred to the carriage (T) of the floor conveyor (9), dried while transporting, and transported to the next process after drying is completed. In the painting equipment designed to
The floor conveyor (9) is formed in a circulation track back to the drying furnace (8), wherein repositioned before the traveling drying oven outlet (8out) of the _{(P 2)} street drying oven entrance (8in) (10) At the same time, along the circulation path (10) of the floor conveyor (9) from the drying furnace outlet (8out) to the transfer position (P ₂ ), the work (W) finished drying in the drying furnace (8) An elevator device (7) for returning from the cart (T) of the floor conveyor (9) to the hanger (H) of the overhead conveyor (2) at a predetermined return position (P ₃ ) is disposed. The workpiece (W) loaded back on the hanger (H) at the return position (P ₃ ) along the circulation path (3) of the overhead conveyor (2) returning from (P ₃ ) to the arrival position (P ₁ ). ) To the specified unloading position (P ₄ ) The unloading device (12) for transferring to the conveyor (11) to be taken down from the overhead conveyor (2) and transferred to the next process is arranged in order,
A loop-shaped first storage for storing a predetermined number of hangers (H) transferred on the circulation track (3) of the overhead conveyor (2) in a suspended state on the hangers (H). The track (13) is connected between the retraction position (P ₃ ) and the unloading position (P ₄ ) of the overhead conveyor (2) between the drawing side (13a) and the delivery side (13b). Laid to branch and merge into
A spare hanger (Hs) for a predetermined number of carts (T) traveling on the circulation track (10) of the floor conveyor (9) is provided, and storage is performed in a state in which a work (W) is suspended from the spare hanger (Hs). It looped second storage track to (14), the circulation track between the retracted side mounting flashing position of said (14a) overhead conveyor (2) _(P 3) and Datsuni position _(P 4) ( 3) and the delivery side (14b) is laid so as to join the circulation track (3) before the return position (P ₃ ) of the overhead conveyor (2),
Pre-processing and painting of all workpieces (W) being transported by the overhead conveyor (2) and floor conveyor (9) when the loading of the workpiece (W) from the previous process and the unloading to the next process is stopped After the drying is finished, the required number of workpieces (W) on the top side are put back on the hanger (H) at the return position (P ₃ ), and then suspended in the hanger (H). The first storage track (13) is stored, and the remaining work (W) is placed on the spare hanger (Hs) and then suspended on the spare hanger (Hs). (14) A painting facility characterized by storage.

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