JPS6131694B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an apparatus for transporting an object along a surface treatment line to a predetermined position while moving it up and down.

Prior Art To treat the surface of a conveyed object, such as a mold material for an aluminum sash, to prevent corrosion or color it, the object is sequentially immersed in a plurality of tanks, such as an alumite tank, a coloring tank, and a washing tank, according to a predetermined treatment process. In this surface treatment process, the conveyance of the object to be treated is usually carried out by a gate-type crane that runs astride rails provided along continuous surface treatment tanks.

On the other hand, current surface treatment apparatuses are becoming larger from the viewpoint of mass production. However, the transport device is almost the same as the conventional crane-based type, only larger in size. Therefore, a large crane is moved each time the object is transported, and the object is transported to a desired tank position for the next process. In other words, in the conventional conveyance device, even when conveying an object to the next tank, for example, the carrier bar supporting the object is raised, and in this state, the crane is moved to the next tank.
After that, the carrier bar is lowered. In this way, with conventional equipment, horizontal transport always depends on the movement of the crane, which takes time to transport, creates a lot of noise when the crane moves, and requires a large amount of driving force to operate the crane. It has the disadvantage of being considered.

OBJECTS OF THE INVENTION An object of the present invention is to eliminate the drawbacks of conventional conveying devices, and to shorten the conveying time, prevent noise, effectively utilize driving force, and further reduce the number of conveying steps.

Solution to the Invention Based on the above object, the present invention provides a cart that can run along a surface treatment line with a plurality of supports for conveyed objects that can be raised and lowered, and a plurality of movable conveyors on these supports. By combining the movable conveyor and the trolley, the objects to be transported are transported across a plurality of surface treatment tanks with as few transport steps as possible.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The surface treatment conveyance apparatus according to the present invention will be specifically described below with reference to the drawings.

As illustrated in FIGS. 1 to 3, the conveyance device 1 of the present invention includes a cart 2, a plurality of supports 20, for example, three, movable conveyors ₄₁ , ₄₂ , ₄₃ , and a plurality of, for example, two fixed conveyor 5 ₁ ,
It is composed of 5 ₂ .

The trolley 2 is capable of running along the surface treatment line, and runs along a pair of guide rails 7 while straddling the surface treatment tanks 6 ₁ , 6 ₂ . . . 6 _o arranged at regular intervals. and move. This trolley 2
is equipped with wheels at the lower ends of its legs 8 and runs on the guide rail 7. This driving force during traveling is obtained by a drive unit 10 such as a gear motor. The rotational force of the drive unit 10 is transmitted by a chain-chain wheel 11 to a pinion 15 below the leg 8 via a horizontal shaft 12, a bevel gear 13, and a vertical shaft 14. A pinion 15 meshes with a rack 16 near the guide rail 7 and drives the carriage 2.

On the other hand, the three supports 20 are elevators 3 ₁ , 3 ₂ ,
_3. Lifting rails 17 are vertically attached to both sides of the trolley 2, and sprocket wheels 18 on the upper and lower ends are rotatably supported. It is wrapped around a conveyor chain 19 and fixed to the inner part of the conveyor chain 19. Further, an elevating drive section 21 is installed, for example, at the upper part of the trolley 2, and an idle chain wheel 23 is connected to the output chain wheel 22.
Along with this, a conveyor chain 19 is hung.

Furthermore, the movable conveyors 4 ₁ , 4 ₂ , 4 ₃ are provided on the support body 20 , and, for example, while supporting the carrier bars 25 ₁ , 25 ₂ of the two conveyed objects 24 ₁ , 24 ₂ in a substantially horizontal state, A pair of conveyor rollers 26 are attached to the support body 20 so as to be rotatable along a horizontal axis, and a movable conveyor belt 27 is wound around both conveyor rollers 26.
This movable conveyor belt 27 is driven by a movable conveyor drive section 28.

The fixed co-conveyors 5 ₁ and 5 ₂ have a transfer function, and are installed on mounting bases 29 at positions sandwiched between the movable conveyors 4 ₁ , 4 ₂ , and 4 ₃ on both sides of the upper part of the cart 2. It consists of a conveyor roller 30 and a horizontal fixed conveyor belt 31 wrapped around it. This fixed conveyor belt 31 is
Each is driven by a fixed conveyor drive section 32. The movable conveyors 4 ₁ , 4 ₂ , 4 ₃ and the fixed conveyors 5 ₁ , 5 ₂ overlap each other at their ends in the conveyance direction, and are arranged alternately.

In addition, each support body 20 equipped with movable conveyors 4 ₁ , 4 ₂ , 4 ₃ is simultaneously connected to three tanks 6 1 , 4 ₃ , respectively.
It is designed to correspond to the center position of 6 ₂ ...6 _o .

Effects of the Invention Next, the effects of the invention will be specifically explained together with the transport process of the transport device 1.

As already mentioned, the objects 24 ₁ , 24 ₂ to be conveyed, such as aluminum sash shapes, are held by the carrier bars 25 ₁ , 25 _2, respectively, and as shown in FIGS. 2 and 3, for example, the vessels 6 ₂ , 6 Immersed inside ₃ . The carrier bars 25 ₁ and 25 ₂ are
The holding portions 25a at both ends thereof are placed on the movable conveyor belts 27 of the movable conveyors 4 ₂ , 4 ₃ . Therefore, in this state, the operator starts the lifting drive unit 21 and, for example, moves the movable conveyor 4.
₂ , 4 ₃ The support 20 with the elevator 3 ₂ , 3 ₃
When the carrier bar 25 ₁ and the transported object 24 ₁ ,
₂₄₂ moves up and down in the range of elevation of the support body 20.

Furthermore, the movable conveyors 4 ₂ , 4 ₃ are continuous with the adjacent fixed conveyors 5 ₁ , 5 ₂ at the highest positions on the elevation rail 17 . That is, the fixed conveyor belt 31 and the movable conveyor belt 27 have their upper surfaces, that is, carrier bars 25 ₁ ,
On the support surface of 25 ₂ , they continue in a partially overlapping state in the running direction of the truck 2. Therefore, in this state, the movable conveyor belts 27 of the movable conveyors 4 ₂ , 4 ₃ holding the carrier bars 25 ₁ , 25 ₂ are moved by the movable conveyor drive section 28 .
Further, if the fixed conveyor belt 31 is simultaneously driven in the conveying direction by the fixed conveyor driving section 32, the conveyed objects 24 ₁ , 24 ₂ are transferred to the plural movable conveyors 4 ₁ , 4 ₂ , 4 ₃ and the fixed conveyors 5 ₁ , 5 . ₂
This means that it can be transported in the running direction of the trolley 2 within a continuous range D. In this range D, trolley 2
may remain stopped. The ascending or descending positions of the movable conveyors 4 ₁ , 4 ₂ , 4 ₃ and the predetermined stopping positions of the carrier bars 25 ₁ , 25 ₂ can be detected by installing limit switches at predetermined positions.

Embodiment of the conveyance process Now, FIGS. 4 and 5 illustrate an actual conveyance process.

First, FIG. 4A shows two carrier bars 25 ₁ , 25 ₂ arranged one tank apart from each other in a distant adjacent tank 6.
_o , 6 shows the case of moving to _o+1 . In this case, the trolley 2 completes the journey by traveling only one outbound trip. That is, in the conveyance process at this time, in the first process, the corresponding carrier bars 25 ₁ and 25 ₂ are placed on the movable conveyors 4 ₁ and 4 ₃ and raised, and in the next process, one of the carrier bars 25 ₁ is placed on the movable conveyors 4 1 and 4 ₃ . , fixed conveyor 5 ₁ movable conveyor 5
₁ to the movable conveyor 4 ₂ , then the cart 2 is moved to a predetermined position and stopped as in the process, and in the final process the two movable conveyors 4 ₂ , 4 are moved.
₃ and lower the carrier bars 25 ₁ and 25 ₂ .
Place them on the corresponding tanks _o and 6 _o+1 , respectively. Note that the steps may be performed in the reverse order. In this way, in the present invention, conveyance is completed in four steps.

However _, as shown in _FIG .
Processes are also required. Furthermore, the conventional method requires at least one and a half round trips to move the crane.

Next, in FIG. 5A, one conveyed object 24 ₁ of the carrier bars 25 ₁ , 25 ₂ lined up one tank apart is processed in the intermediate tank 6 ₂ and then transferred to the distant tanks 6 _o , 6 _{o .}
This shows the case of moving to ₊₁ . In this case, one of the carrier bars 25 ₁ is first placed on the movable conveyor 4 ₁ and then the carrier bar 25 ₁ is placed on the movable conveyor 4 ₁ and the fixed conveyor 5 in the process.
₁ and movable conveyor ₄₂ in the order of horizontal direction, and then, in the process, one carrier bar ₂₅₁ placed on the movable conveyor ₄₂ is lowered onto the tank 62, and then, in the process, one of the carrier bars 251 placed on the movable conveyor ₄₂ is lowered onto the tank ₆₂ . The carrier bar 25 ₁ is placed on the conveyor 4 ₃ again, and the other carrier bar 25 ₂ is placed on the conveyor 4 3 and raised together.
In the next step, the cart 2 is moved to convey the transported object 24.
₁ and 24 ₂ to a predetermined position, and in the final step, the two movable conveyors 4 ₂ 4 ₃ are lowered together and placed on the desired tanks 6 _o and 6 _o+1 . In this way, the conveyance in this case is completed in six steps.

In contrast, the conventional method requires 12 steps as shown in Figure B, but the crane travels one and a half times in each step.

Modifications of the Invention In the above embodiment, three movable conveyors 4 are used.
₁ , 4 ₂ , 4 ₃ , two fixed conveyors 5 ₁ , 5 ₂
However, the number of these devices can be set arbitrarily as needed. In addition, fixed conveyors 5 ₁ , 5 ₂
It is also conceivable to provide the lower part depending on the object to be transported. Furthermore, a trolley 2, three supports 20, movable conveyors 4 ₁ , 4 ₂ , 4 ₃ and a fixed conveyor 5
The driving means ₁ , 5 _{, and 2} are not limited to those in the embodiment. For example, the fixed conveyors 5 ₁ , 5 ₂ and the movable conveyors 4 ₁ , 4 ₂ , 4 ₃ are simply driven type, and the movement of the carrier bar 25 ₁ thereon is as follows:
It may also be obtained by pressing force from an air cylinder or the like.
In addition, the movable parts can be controlled by turning on and off switches under the supervision of the operator as before, or by setting sequence programs in advance.
It may be possible to proceed automatically in sequence.

Effects of the Invention According to the present invention, the number of times of operation control of the cart is reduced due to the combination of the conveying function of the cart that can move along the surface treatment line and the plurality of supports equipped with movable conveyors. , the noise generated when the carts run is reduced, and by combining multiple conveyors, it is possible to flexibly handle complex conveyances, and even in such cases, the conveyance process is significantly reduced, so conveyance time can be shortened and work Efficiency will be improved.

[Brief explanation of the drawing]

FIG. 1 is a front view of the surface treatment conveying device of the present invention, FIG. 2 is a plan view of the same device, FIG. 3 is a side view of the same device, and FIGS. 4 and 5 A and B are respectively of the present invention. and FIG. 7 is an explanatory diagram of a conveyance process according to a conventional example. 1... Conveyance device for surface treatment, 2... Dolly, 3
₁ , 3 ₂ , 3 ₃ ... elevator, 4 ₁ , 4 ₂ , 4 ₃ ...
...Movable conveyor, 5 ₁ , 5 ₂ ... Fixed conveyor,
6... Surface treatment tank, 20... Support, 24
₁ , 24 ₂ ...Object to be transported.

Claims (1)

[Claims] 1. A trolley that can run along a surface treatment line having a plurality of surface treatment tanks, a support for objects to be transported that corresponds to a predetermined number of surface treatment tanks, which is installed on the trolley so as to be able to move up and down, and a 1. A surface treatment conveying device comprising: a movable conveyor that moves the conveyed object toward an adjacent support while supporting the conveyed object.