JP3574228B2 - Detachable loading device for transport conveyor - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is, with respect to the transporting conveyer for conveying by supporting the object to be conveyed to the conveying member such as a hanger or carriage which is transported along the orbit, after Datsuni transferred object which is conveyed by the conveying member, The present invention relates to a loading / unloading device for a transport conveyor that loads another transported object onto the transport body.
[0002]
[Prior art]
For example, after applying a pretreatment to the object to be coated, in the coating step of performing electrodeposition coating, in order to continuously transport the object to be coated while being hung by a hanger, an overhead conveyor is used as a transport conveyor. ing.
FIG. 4 shows a layout of a coating facility for continuously performing pretreatment, electrodeposition coating, and coating film drying using such an overhead conveyor. (Not shown), a pretreatment device 43 for performing a degreasing process, a washing process, a film conversion process, etc. on the workpiece W conveyed by a hanger, and a stored electrode for performing electrodeposition coating. The coating tank 44, a water washing device 45 for removing excess electrodeposition liquid adhering to the surface of the object to be coated, a coating drying furnace 46 for heating and drying the coating film, and a coating object W that has been dried are removed from a hanger. An unloading device 47 for unloading is provided.
[0003]
According to this, when the hanger continuously transported along the orbit 41 reaches a predetermined loading position, the workpiece W is loaded and transported by the loading device 42, and the pretreatment device 43, the electrodeposition tank After a predetermined process is performed in each of 44, a water washing device 45, and a paint drying furnace 46, the process reaches an unloading device 47.
When the article W is unloaded by the unloading device 47, the emptied hanger is transported again to the loading position, and a new article W is loaded by the loading device 42, and the trajectory 41 is moved. Circulate.
[0004]
[Problems to be solved by the invention]
However, as long as the hanger is continuously transferred along the orbit 41, the object cannot be loaded on the hanger unless the object is unloaded from the hanger. Since the loading device and the receiving device must be installed separately, and the unloading device and the receiving device must be stored when the hanger is stopped, a very large installation space is required in a factory with a limited area. And the need to secure storage space.
Further, since the hanger must be temporarily stopped at each of the unloading position and the receiving position to perform the unloading / receiving operation, there is a problem that the working efficiency is reduced.
Further, the work is conveyed while being placed on the skid, the work Wout is separated from the skid Sout at the work unloading position, only the work Wout is unloaded, and the empty skid Sout is unloaded from the hanger at the work loading position. After that, in the overhead conveyor in which another work Win and skid Sin are loaded on the hanger, only the work Wout is unloaded by the work unloading device 51 installed at the work unloading position, as shown in FIG. Therefore, a skid unloading device 52 for unloading the empty skid Sout and a work loading device 53 for loading the workpiece Win on the skid Sin must be provided side by side at the workpiece loading position. In addition, more space and storage space had to be secured.
Accordingly, the present invention not only improves the work efficiency by reducing the number of stops of the transport body by enabling unloading and arrival at the same position, but also when the transported object is directly mounted on the transport body and transferred. Can be used for unloading and loading of a work with a single loading / unloading device, and when transferring a work placed on a skid, a single loading / unloading device installed at the work loading position A technical problem is to significantly reduce installation space and storage space by unloading empty skids and loading workpieces.
[0005]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a method for transporting an object by supporting the object to be transported along a conveyor orbit of a transport conveyor and transporting the transported object at a predetermined transport body stop position. A loading and unloading device for a conveyor for unloading a conveyed object and then loading another object to be conveyed on the conveyor, wherein the conveyor is located above or below the conveyor, and A carry-in conveyor for carrying a conveyed object to be loaded on the conveyor, and a collection conveyor for collecting the conveyed material unloaded from the carrier are arranged in upper and lower two stages, and the conveyor is provided from the carry-in conveyor. A lifting table for loading and unloading an object to be conveyed onto the conveyor of the conveyer, and a lifting and lowering table for unloading the object to be conveyed from the conveyor of the conveyer and reloading the object on the conveyor for collection. Two tables up and down Are forms elevator apparatus installation, the object to be conveyed loading lifting table of the elevator installation, the fork for supporting a workpiece to be arrival is disposed for advancing and retracting with respect to the transport of the carrying-in conveyor and conveyor in that bets both the object to be conveyed recovery lifting table, characterized in that the fork for supporting the object to be conveyed that Datsuni is disposed for advancing and retracting with respect to the transport member and the collecting conveyor conveyor .
[0006]
According to the present invention, when an object to be conveyed is carried in by the carry-in conveyor, the fork of the carry-in elevating table is advanced to the carry-in conveyor, and the object to be carried is supported on the fork.
Then, for example, when a carry-in conveyor and a collection conveyor are laid below the conveyor, the elevator table and the collection elevating table are raised by the elevator device while the transported object is placed on the carry-in elevating table. Then, the recovery elevating table is positioned at a height at which the conveyed object can be delivered to and from the conveyer, and waits until the conveyed object reaches the conveyer stop position.
[0007]
When the transport body reaches the stop position, first, the fork of the recovery elevating table advances to the transport body, and the transported object transported by the transport body is supported on the fork of the recovery elevating table to be removed. After loading and emptying the carrier, this time, position the carry-in elevating table at a height at which the transferred object can be transferred to and from the carrier, and move the fork toward and away from the carrier. Thus, the transported object supported by the fork is loaded on the transport body.
Finally, when the recovery elevating table is lowered and the fork is moved forward and backward with respect to the recovery conveyor, the transported object unloaded from the carrier is replaced on the recovery conveyor, and the loading / unloading operation is completed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be specifically described based on embodiments illustrated in the drawings.
FIG. 1 is a perspective view showing an example of a loading / unloading device for a conveyor according to the present invention, and FIG. 2 is an explanatory diagram showing the operation thereof.
[0009]
This example is applied to a loading / unloading device for an overhead conveyor.
In FIG. 1, reference numeral 1 denotes an overhead conveyor (transport conveyor) for suspending and transporting works (transported objects) Win and Wout along a orbit 2 on a hanger (transport body) 3, and includes a preset work attachment / detachment. A loading / unloading device 4 that unloads the work Wout conveyed by the hanger 3 and then loads another work Win on the hanger 3 at the same position is installed at the load position (transportation body stop position).
The hanger 3 is formed in a shape in which the workpieces Win and Wout can be loaded and unloaded from at least one side surface thereof. For example, a C-shaped or L-shaped one viewed from the front is used.
[0010]
And, at the work loading / unloading position, a carry-in conveyor 5A for carrying the work Win to be loaded on the hanger 3 from a direction perpendicular to the conveyor 1 and a hanger. A collection conveyor 5B for collecting the work Wout unloaded from the conveyor 3 is provided in two upper and lower stages.
In addition, the work Wint is removed from the work conveyer lifting / lowering table (lifting table for loading / unloading the conveyed object) 6A for transferring the work Win onto the hanger 3 of the overhead conveyor 1 from the carry-in conveyor 5A and receiving the work Wout. An elevator device 7 is provided in which an up-down table 6B for loading and reloading the conveyed object is mounted on the collection conveyor 5B in two vertical stages, and each of the tables 6A and 6B is driven by a single up-down driving device (not shown). Are integrally moved up and down.
[0011]
A fork 8A for supporting a workpiece Win to be loaded is disposed on the work loading elevating table 6A of the elevator apparatus 7 so as to be able to advance and retreat with respect to the loading conveyor 5A and the hanger 3 of the overhead conveyor 1. On the collection elevating table 6A, a fork 8A supporting the unloaded conveyed object Wout is provided so as to be able to advance and retreat with respect to the hanger 3 of the overhead conveyor 1 and the collection conveyor 5B.
[0012]
When the work Win, Wout conveyed by the hanger 3 or the carry-in conveyor 5A is delivered to each of the elevating tables 6A, 6B, the forks 8A, 8B are extended and inserted under the work Win, Wout. When the lifting tables 6A and 6B are raised, the work Win and Wout are supported on the forks 8A and 8B.
When the work Win, Wout supported by the forks 8A, 8B of the elevating tables 6A, 6B is transferred to the hanger 3, the collection conveyor 5B, the tables 6A are extended with the forks 8A, 8B extended. , 6B to lower the work Win, Wout onto the hanger 3, the collecting conveyor 5B, and then pull out the forks 8A, 8B.
[0013]
In this example, the carry-in conveyor 5A is provided so as to be able to advance and retreat with respect to the elevator device 7, and is extended when the work Win is transferred to and from the work carry-in elevating table 6A, and is used for work collection. When the fork 8B of the elevating table 6B is extended and the table 6B is lowered to the height of the collection conveyor 5B with the work Wout placed thereon, it is contracted so as not to be in the way.
[0014]
The above is an example of the configuration of the present invention, and its operation will be described next with reference to FIG.
When unloading the work Wout carried by the hanger 3 of the overhead conveyor 1 and loading the work Win carried in by the carry-in conveyor 5A to the overhead conveyor 1, first, the work carried in by the carry-in conveyor 5A. Win is delivered to the fork 8A of the work loading / lowering table 6A.
At this time, as shown in FIG. 2 (a), the fork 8A of the work loading / lowering table 6A is extended to wait slightly lower than the loading conveyor 5A, and then the loading conveyor 5A is extended and its leading end is extended. The work Win is carried in to the position, and in this state, the work carrying lift table 6A is raised by the elevator device 7.
When the fork 8A passes upward through the notch 9A (see FIG. 1) of the carry-in conveyor 5A, the work Win is lifted from the carry-in conveyor 5A by the fork 8A, so that the work Win is supported on the fork 8A. Is done.
The fork 8A that has received the work Win is contracted so that the work Win is positioned on the table 6A.
[0015]
Next, the work Wout conveyed by the hanger 3 is unloaded.
At this time, as shown in FIG. 2 (b), the fork 8B of the work collection elevating table 6B is extended to stand by a little lower than the hanger 3, and when the hanger 3 stops, the elevator device 7 raises and lowers the work. Raise the table 6B.
The work Wout is lifted from the hanger 3 by the fork 8B when the fork 8B passes through the frame of the hanger 3 and comes out upward, so that the work Wout is supported on the fork 8B. When contracted, the work Wout moves onto the work collection elevating table 7B, and the hanger 3 becomes empty.
[0016]
When the hanger 3 is empty, the work Win supported by the fork 8A of the work loading / lowering table 6A is loaded on the hanger 3 this time.
As shown in FIG. 2C, the work loading elevating table 6A is lowered to a position slightly higher than the hanger 3, and the work Win is inserted into the hanger 3 by extending the fork 8A. The apparatus 7 lowers the work loading elevating table 6A below the hanger 3.
As a result, the fork 8A passes downward between the frames of the hanger 3, and only the work Win remains on the hanger 3, so that the work Win is loaded on the hanger 3.
[0017]
Finally, the work Wout unloaded from the hanger 3 and supported by the fork 8B of the work collection elevating table 6B is delivered to the collection conveyor 5B.
As shown in FIG. 2 (d), the loading conveyor 5A is retracted to the original position, the fork 8B is extended, and the work collection elevating table 6B is collected while the work Wout is extended sideways. Down to below the conveyor 5B.
As a result, the fork 8B passes downward through the notch 9B of the collection conveyor 5B, and only the work Wout remains on the collection conveyor 8B. Therefore, the work Wout is transferred to the collection conveyor 8B. To the next step.
[0018]
As described above, according to the present example, the carry-in conveyor 5A and the collection conveyor 5B are arranged in two upper and lower stages, and the work carry-in elevating table 6A and the work collection elevating table 6B are arranged in two upper and lower stages. By lifting the tables 6A and 6B by the elevator device 7, the unloading of the work Wout conveyed by the hanger 3 and the arrival of the work Win to be conveyed from now on are performed at the same position. As a result, only one loading / unloading device 4 is needed, the space required for loading / unloading the work can be reduced to about half of the conventional one, and at the same time, the hanger needs to be stopped only once, thus improving work efficiency. I do.
[0019]
FIG. 3 shows the operation of another loading / unloading device for an overhead conveyor according to the present invention. Parts common to those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description is omitted.
In this example, the work is supported and transported on a hanger 3 transported along the orbit 2 while being mounted on a skid, and the work is separated from the skid Sout at a work unloading position (not shown) and only the work is moved. Was unloaded from the hanger 3 and the empty skid Sout was unloaded at the work loading position, and then used as a loading / unloading device for the overhead conveyor 1 for loading the hanger 3 while the work Win was still loaded on the skid Sin. Things.
[0020]
The loading / unloading device 20 of the present example installed at the work loading position of the overhead conveyor 1 includes a loading conveyor 21A for loading the workpiece Win to be loaded on the hanger 3 while being placed on the skid Sin, and the hanger 3, a collection conveyor 21B for unloading and collecting the skid Sout is formed in two upper and lower stages and disposed below the overhead conveyor 1, and the work Win is transferred from the carry-in conveyor 21A to the hanger 3 of the overhead conveyor 1. The elevator device 23 is provided with a work carrying elevating table 22A for reloading while being mounted on the skid Sin and a skid collecting elevating table 22B for reloading the skid Sout from the hanger 3 to the collecting conveyor 21B. Have been.
[0021]
A fork 24A for supporting the work Win to be loaded on the skid Sin can be moved forward and backward with respect to the carry-in conveyor 21A and the hanger 3 of the overhead conveyor 1 on the work carry-in elevating table 22A of the elevator apparatus 23. And a fork 21B for supporting the unloaded skid Sout is provided on the skid collection elevating table 22B so as to be able to advance and retreat with respect to the hanger 3 of the overhead conveyor 1 and the collection conveyor 24B. .
[0022]
In this example, since the skid collecting elevating table 22B and the collecting conveyer 21B only need to be able to place the thin skid Sout thereon, the interval between the conveyers 21A and 21B and the respective elevating tables 22A and 22B. Are set low.
[0023]
According to the loading / unloading device 20, first, the work Win carried in by the carry-in conveyor 21A is transferred to the work carry-in elevating table 22A. As shown in FIG. 3 (a), this involves extending the fork 24A of the work loading / lowering table 22A to make it stand by slightly lower than the loading conveyor 21A, and then extending the loading conveyor 21A and the tip thereof. If the work Win is carried in while being placed on the skid Sin to the position, and the work loading elevating table 22A is raised by the elevator device 23 in this state, the work Win is supported on the fork 21A while being placed on the skid Sin. .
[0024]
Next, the empty skid Sout remaining on the hanger 3 where the work has been unloaded at the work unloading position is unloaded. As shown in FIG. 3B, the fork 21B of the skid collection elevating table 22B is extended to wait slightly lower than the hanger 3, and when the hanger 3 stops, the elevator device 23 stops the skid collection elevating table. When the 22B is raised, the skid Sout is supported on the fork 24B, and when the fork 21B is contracted, the work Wout moves onto the skid collecting elevating table 7B, and the hanger 3 becomes empty.
[0025]
When the hanger 3 is empty, the work Win and the skid Sin supported on the fork 24A of the work loading / lowering table 22A are loaded on the hanger 3 this time. As shown in FIG. 3 (c), the work loading / lowering table 22A is lowered to a position slightly higher than the hanger 3, and the fork 21A is extended, so that the work Win is placed on the skid Sin and is placed in the hanger 3. In this state, if the work loading elevating table 22A is lowered to below the hanger 3 by the elevator device 23, the fork 21A falls down through the notch of the loading conveyor 24A, and the work Win and the skid Sin are hung. Thus, the work Win and the skid Sin are loaded on the hanger 3.
[0026]
Finally, the skid Sout unloaded from the hanger 3 and supported by the fork 24B of the skid collection elevating table 22B is transferred to the collection conveyor 21B. As shown in FIG. 3 (d), the skid collecting elevating table 22B is lowered while the loading conveyor 21A is retracted to its original position, the fork 24B is extended, and the skid Sout is extended sideways. Then, when the fork 21B is lowered to a position below the collecting conveyor 21B, the fork 21B passes down through the cutout portion of the collecting conveyor 24B, and only the skid Sout remains on the collecting conveyor 24B, so that the skid Sout is collected. Delivered on the conveyor 21B.
[0027]
As described above, according to the present example, the carry-in conveyor 21A and the collection conveyor 21B are arranged in two upper and lower stages, and the work carry-in elevating table 22A and the skid collection elevating table 22B are arranged in two upper and lower stages. By lifting each of the tables 22A and 22B by the elevator device 23, the unloading of the work Wout conveyed by the hanger 3 and the arrival of the work Win to be conveyed from now on are performed at the same position. Therefore, it is not necessary to separately provide a skid unloading device at the work loading position, and the installation space can be greatly reduced.
Further, since the unloading of the skid and the loading of the work are performed at the same position, there is no need to stop the hanger 3 in small increments, and the work efficiency is improved.
[0028]
In addition, in the description of the above embodiment, the case where each is used as a loading / unloading device for the overhead conveyor 1 has been described, but it is used as a loading / unloading device for a normal floor conveyor or other conveyor on which a bogie travels along a orbit. You can also.
Also, the case where the carrying-in conveyors 6A and 21A and the collecting conveyors 6B and 21B are laid below the overhead conveyor 1 has been described. However, the present invention is not limited to this. It may be.
[0029]
【The invention's effect】
As described above, according to the present invention, the unloading of the conveyed object transported by the hanger and the arrival of the conveyed object to be transported on the hanger can be performed at the same position. There is no need to separately install the unloading device and the receiving device. For example, the limited space in the factory can be used effectively, and the number of hanger stops has been reduced, resulting in improved work efficiency. Has excellent effects.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a loading / unloading device for a conveyor according to the present invention.
FIG. 2 is an explanatory diagram showing the operation.
FIG. 3 is an explanatory view showing another loading / unloading device according to the present invention and its operation.
FIG. 4 is an explanatory view showing an installation mode of a conventional apparatus.
FIG. 5 is an explanatory view showing an installation mode of another conventional apparatus.
[Explanation of symbols]
1 ... Overhead conveyor (transport conveyor)
2 ... orbit Win, Wout ... work (transported object)
3 hanger (carrier)
4 ··· Detachable loading device 5A ··· Conveyor 5B ··· Recovery conveyor 6A · · · · Work loading elevating table 6B · · · Work recovery elevating table 7 · · · Elevator device 8A, 8B · · · Fork 20 · ··· Removable loading devices Sin, Sout ··· Skid 21A ··· Conveyor 21B ··· Recovery conveyor 22A ··· Work loading elevating table 22B ··· Skid collecting elevating table 23 ··· Elevator devices 24A and 24B ··· fork

Claims (2)

When a transport object (Win, Wout) is transported by supporting the transport object (Win, Wout) on a transport body (3) that is transported along the orbit (2) of the transport conveyor (1), the transport body is stopped at a predetermined transport body stop position. A loading / unloading device for a transport conveyer for unloading a transported object (Wout) transported by (3) and then loading another transported object (Win) on the transported body (3);
A carry-in conveyor (5A) which is located above or below the carry conveyor (1) and carries an object (Win) to be loaded on the carry body (3); A collection conveyor (5B) for collecting unloaded conveyed articles (Wout) is arranged in two stages, upper and lower,
An object loading / lowering table (6A) for loading an object (Win) from the loading conveyor (5A) to the transporting body (3) of the transporting conveyor (1), and transport of the transporting conveyor (1). An elevator device (7) is provided in which a conveyed object elevating table (6B) for unloading the conveyed object (Wout) from the body (3) and replacing it on the collection conveyor (5B) is formed in two stages, upper and lower. ,
A fork (6A) for supporting an object (Win) to be loaded is loaded on a carry-in conveyor (5A) and a conveyor (1) on the object carrying elevator table (6A) of the elevator device (7). movably while being disposed with respect to the conveying member (3) of the object to be conveyed recovery lifting table (6B), the conveyed object (Wout) fork for supporting (8B) is a conveyor that Datsuni A loading / unloading device for a transport conveyor, which is provided so as to be able to advance and retreat with respect to the transport body (3) and the collection conveyor (5B) of (1). The work is supported on a skid while being carried on a skid (3) conveyed along the orbit (2) of the conveyor (1), and the work is separated from the skid (Sout) at the work unloading position. When the transporter (3), which has only unloaded the work, arrives at the work loading position, the empty skid (Sout) is unloaded, and then the work (Win) is skid (Sin) onto the transporter (3). ) Is a loading and unloading device for a transport conveyor, which is configured to arrive while being placed on
A loading conveyor (21A) positioned above or below the transport conveyor (1) for loading a workpiece (Win) to be loaded on the transport body (3) on a skid; A collection conveyor (21B) for collecting skids (Sout) unloaded from (3) is arranged in two stages, upper and lower,
The work loading / lowering table () for loading a workpiece (Win) from the loading conveyor (21A) to the transporting body (3) of the transporting conveyor (1) while loading the workpiece (Sin) on the skid (Sin). 22A) and an elevator device (23) in which a skid collection lifting table (22B) for unloading skids (Sout) from the transport conveyor (1) and replacing the skids (Sout) with a collection conveyor (21B) is formed in two stages, upper and lower. Installed,
A fork (24A) for supporting a workpiece (Win) to be loaded while being loaded on a skid (Sin) is provided on the loading conveyor (21A) and transporting the workpiece loading / lowering table (22A) of the elevator device (23). carrier conveyor (1) movably while being disposed relative to (3), the skid recovery lifting table (22B), a fork (24B) is conveyor for supporting the skid (Sout) that Datsuni A loading / unloading device for a transport conveyor, which is provided so as to be able to advance and retreat with respect to the transport body (3) and the collection conveyor (21B) of (1).

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