JPH0810065Y2 - Double-acting hanger conveyor work zone conveyor - Google Patents

Description

[Detailed description of the device]

[0001]

INDUSTRIAL APPLICABILITY The present invention is capable of raising and lowering a transported object suspended and transported by a double-acting hanger conveyor at a work position in a working section during transportation and performing a desired operation on the transported object. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, hanging objects to be conveyed by a double-acting hanger conveyor, for example, articles such as automobile bodies or parts are dipped in a washing tank or an electrodeposition coating solution tank during transportation. In the working section, the immersion tank position,
That is, since it is necessary to raise and lower the transported object at the work position, as shown in FIGS. 6 to 7, only the power rail P is bypassed in the work section A in which the immersion tanks W and W ′ are provided, and the trolley towing drive chain is moved. The engaging claw is disengaged from the trolley T for suspending the transported object on the free rail F, and the trolley T on the free rail F that has lost the driving force is provided along the free rail F.
The forward reciprocating conveyor S1 moves the reciprocating conveyor S1 forward onto the ascending / descending free rail portion F'above the immersion tank W, and then the first reciprocating conveyor S1 moves backward to push the following trolley. To wait. Then, the ascending / descending free rail portion F ′ is descended by the drop lift L to immerse the suspended conveyed product B in the dipping tank W.

The suspended conveyed object B subjected to the immersion process moves up along with the elevating free rail portion F ′ by the ascending operation of the drop lift L and returns to its original position, and is then moved forward by the second reciprocating conveyor S2. The second reciprocating conveyor S2 is moved backward by being pushed above the immersion tank W'of the process, and returns to the original position where it waits for pushing the succeeding trolley. The trolley pushed to the upper side of the immersion tank W ′ is operated in the same manner as when the trolley is immersed in the immersion tank W.

If the second reciprocating conveyor S2 is provided with a plurality of, for example, three pushing pieces with a predetermined pitch, the leading pushing piece is a power rail P and a free rail F which are trolleys lifted from the dipping tank W '. Of the pulling drive chain on the power rail P, the next pushing piece pushes the succeeding trolley to the upper position of the dipping tank W ′, and the trailing pushing piece moves The trolley pulled up from the immersion tank W is pushed to the subsequent trolley position. Therefore, each time the second reciprocating conveyor S2 makes one reciprocation, the trolley on the free rail advances by one pitch and the trolley that suspends the transported object after completing all the steps of the dipping tank treatment is sequentially at the confluence point. The traction drive chain is engaged and pushed.

When the immersion tank W is long as shown in the drawing, a free rail (not shown) for pushing the inside of the immersion tank is fixed above the liquid surface of the tank W to push the inside of the immersion tank W. Both ends of the free rail are connected at the descending position of the elevating free rail portion F ', and the reciprocating conveyor S3 for pushing in the immersion tank is installed along the free rail for pushing in the immersion tank for pushing in the immersion tank. The suspended transfer object of the trolley that has dropped into the dipping tank by the drop lift L by the reciprocating conveyor S3 is transported in the dipping tank W, and is connected to the end of the free rail for pushing in the dipping tank to the lifting free rail portion waiting. It can be transferred, raised by a drop lift, connected to the free rail F, and pushed by the second reciprocating conveyor S2.

[0006]

In the above-mentioned prior art, a plurality of reciprocating conveyors are provided along the working section free rail in order to convey the trolley on the working section free rail which has lost the traction drive force by vertical dipping. The work section trolley was intermittently advanced by the reciprocating motion of the conveyor. Therefore, in the working section A, a driving means for a plurality of reciprocating conveyors, for example, a reciprocating driving cylinder device, a reciprocating chain with a pushing piece suspended between a pair of spaced apart pulleys, or
Drive equipment with auxiliary equipment such as forward and reverse rotation motors and speed reducers for driving chains with pushing pieces is installed along the work section free rail, and these drive means and auxiliary equipment are located above the dipping tank. Not only is maintenance and inspection not easy, but especially when the immersion tank is a cleaning liquid tank or an electrodeposition coating liquid tank, these drive means and auxiliary equipment are easily corroded by the evaporation of the chemical liquid in the liquid tank. It was necessary to do it frequently.

Further, the dust generated by the movement of these drive facilities contaminates the immersion liquid, adversely affects the cleaning and coating of the conveyed material B, and further, the weight of these drive facilities is large, so that work is performed. In addition to the need to reinforce the ceiling beams suspended by suspending the section free rail, the height between the work section free rail and the ceiling is large in order to secure a working space for these drive facilities. Therefore, there is a defect that the ceiling of the building must be raised.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned drawbacks of the prior art, the present invention eliminates a plurality of reciprocating conveyors provided along the working section free rail and the drive equipment for the conveyor, and eliminates the working section free rail. Can be raised and lowered in the working position
Lifting free rail part that is divided into noh and the entire work section
A series of continuous operation along the free rail for a long time.
The endless conveyor for trolley pushing
The bearer has vertical movement provided at the position of the lifting free rail.
A trolley for suspending a transported object
The trolley pushing pieces that can be tilted up and down to be removed from the joint section at equal pitch
The trolley is installed on one side of the suspended trolley for transporting goods.
The above-mentioned problem is solved by providing an engaging portion for engaging and disengaging the pushing piece.
Is the solution.

[0009]

[Operation] The transported object hanging trolley that has lost its driving force due to being separated from the traction drive chain at the work section entrance is operated by a series of trolley-pushing endless conveyors installed along the free rail from the work section entrance to the exit. When the trolley pushing piece of the conveyor is pushed up by the position, the trolley pushing piece of the conveyor falls down by the cam, and the trolley pushing piece is passed while leaving the trolley on the elevating free rail portion. The transported object suspended on the remaining trolley is dipped in the dipping tank by the lowering of the lift free rail part by the drop lift, and after the dipping process, it rises together with the lift free rail part by the drop lift, and the lift free rail part is Connect to the free rail.
The remaining trolley on the elevating free rail portion connected to the free rail is engaged and pushed with the pushing piece in the standing state of the continuously operating trolley pushing endless conveyor, and the same operation is performed in the immersion tank of the next step. Repeat. Then, the power rail having a path detoured from the free rail at the entrance of the work section merges with the free rail again at the exit of the work section, and the trolley on the free rail pushed to the work section exit by the trolley pushing endless conveyor. Will again be carried by the trolley traction drive chain traveling in the power rail.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of an essential part showing an embodiment of the present invention, and FIG. 2 is a front view of the essential part. The difference from the conventional example is that the first and second parts shown in FIGS. Reciprocating conveyor S1
That is, a series of trolley-pushing endless conveyors 1 that are continuously operated by removing S2 and S2 are provided along the side of the free rail F in the work section A. That is, the power rail P separates from the free rail F at the entrance of the work section A, follows the detour route, and joins the free rail F again at the exit of the work section A, and suspends the conveyed object B such as the vehicle body. The trolley 2 held is moved up and down together with an up-and-down free rail portion F ′ that is operated up and down by the drop lift L at a work position above the first immersion tank W.

As shown in FIGS. 3 to 4, the trolley 2 for suspending a transported object is a trolley traction drive chain C that travels on a power rail P supported by a yoke member Y suspended on a ceiling beam M at equal intervals. Traveling in the free rail F by the front traveling trolley having the engaging piece 3 which is erected upright and disengaged from the engaging claw C'of the power rail P at the entrance of the work section A By entering, the engagement between the engaging claw C ′ and the engaging piece 3 is released, and the driving force is lost, and the free rail F is lost.
The power rail P is left above, and the power rail P merges with the free rail F at the exit of the work section A, so that the locking claw C ′ and the engagement piece 3 are re-engaged with each other to be pulled and driven in the free rail. Is. A hanger 4 for suspending the conveyed product B is attached to the conveyed product suspension trolley 2 so as to be tiltable.

FIG. 4 shows a series of trolley-pushing endless conveyors 1 in which a transported object suspension trolley 2 which has lost the traction drive force in the work section A is provided along the side of the free rail F in the work section A.
FIG. 4 is a side view of the main part of FIG. 3 explaining the state of being pushed by the trolley pushing piece 1 ′ that is attached to the endless conveyor 1 so as to be able to move up and down. Part 5
And the suspension trolley 2 is pushed. Reference numeral 2'denotes a steadying roller of a suspension trolley that travels in a guide rail suspended on the ceiling beam M.

The series of trolley pushing endless conveyors 1 comprises:
As shown in FIGS. 1 and 2, the endless suspension is performed between the drive pulley 6 disposed on the outlet side of the working section A and the driven pulley 7 disposed on the inlet side, and above the immersion tank W in the working section A. When the suspension trolley 2 is pushed onto the elevating free rail portion F ′ located at, the cam plate 8 shown in FIG. 5 causes the pushing piece 1 ′ to fall down and engage with the engaging portion 5 of the suspension trolley 2. Leave. That is, an L-shaped lever member 11 that swings around a pivot point 10 by a cylinder 9 is attached to a frame body side portion of the trolley-pushing endless conveyor 1, and an operating rod 12 attached to the lever member 11 is attached to the lever member 11. A cam plate 8 whose one end is fixed and the other end is slidably guided by moving up and down with rocking.
And the trolley stop piece 13 attached to the tip of the lever member 11 is moved up and down.

When the cam plate 8 is in the upward movement position, it does not come into contact with the pushing piece 1 ', and therefore the suspension trolley 2 is pushed, and when it is in the downward movement position, it comes into contact with the pushing piece 1'. The push-down piece 1'and the engaging portion 5 are disengaged from each other,
The lifting trolley 2 is left on the lifting / lowering free rail portion F ′ and the trolley stop piece 13 moves downward to prevent the lifting trolley from overrunning, and the lifting / lowering free rail portion is lowered by the operation of the drop lift L to convey the lifting trolley. The object B is immersed in the immersion tank W.

The conveyed article B, which has been subjected to the immersion process, is lifted by the operation of the drop lift L, and the pushing piece 1'which is no longer in contact with the cam plate 8 which is changed to the upper moving position by the operation of the cylinder 9 is erected. The suspension trolley 2 can be advanced by engaging and pulling the suspension trolley 2 while maintaining the posture. The same operation is performed on the next immersion tank W '.

When the trolley-pushing endless conveyor 1 pushes the article B, which has been subjected to the immersion process, to the exit of the work section A and reaches the confluence of the power rails P, the trolley-pushing endless conveyor 1 moves to the drive pulley 6. Since it turns around and moves away from the upper part, the pushing piece 1 ′ is disengaged from the engaging portion 5 of the suspension trolley 2, while the engaging claw C ′ of the traction drive chain C in the power rail P is of the suspension trolley 2. It is engaged with the engaging piece 3 and conveyed.

[0017]

According to the present invention, an engaging portion for pushing a trolley is provided on one side of a trolley for suspending a conveyed object, and a large number of trolley pushing pieces that engage with the engaging portion are provided in a continuous manner so that the trolley pushing piece can be raised and lowered. Since a series of trolley pushing endless conveyors to be operated was installed along the free rail over the entire length of the working section, it is not necessary to provide driving means such as pushing conveyor pushers, motors, etc. in the working section and its auxiliary equipment. Place the dipping tank at the work position in the section
Even if placed, there is no risk of dust generation above the dipping tank or the like, and the treatment liquid in the dipping tank is not contaminated. Well
In addition, the free rail above the work position in the work section is lifted up and down.
-Provide a rail part and move up and down at the position of the lifting free rail part.
A cam plate that can be moved downwards allows you to move up and down freely
Push the trolley down by laying it down and separating it from the trolley.
Even if the endless conveyor is operated continuously, the trolley can be stopped.
Since it is possible to carry out construction work of suspended conveyed goods at the work position.
The work can be done without any hindrance.

Further, since the driving means and the auxiliary equipment are not provided in the work section, the load applied to the ceiling beam in the work section is reduced, so that it is not necessary to reinforce the ceiling beam member for suspending the conveyor. Furthermore, the maintenance and inspection work required for these driving means and auxiliary equipment is not necessary within the working section, and the practical effects thereof are remarkable.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of the present invention.

FIG. 2 is a front view of an essential part showing an embodiment of the present invention.

FIG. 3 is an enlarged front view of a trolley for suspending a transported object according to the present invention.

FIG. 4 is an enlarged side view of the transported object hanging trolley in the working section of the present invention.

FIG. 5 is an enlarged front view of a main part of the pushing piece engaging / disengaging device in the working section of the present invention.

FIG. 6 is a plan view of a main part of a conventional example.

FIG. 7 is a front view of a main part of a conventional example.

[Explanation of symbols]

 1 Endless conveyor for pushing trolley in working area 1'Pushing piece 2 Transporting object hanging trolley 5 Engagement part protruding from one side of transporting object hanging trolley 8 Cam plate 13 Trolley stop piece L Drop lift P Power rail W Dipping Tank F Free rail F'Up and down free rail part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 63-13857 (JP, A) Furukaihei 2-43760 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A double-acting hanger conveyor having a power rail for guiding and guiding a trolley traction drive chain and a free rail for guiding and guiding a trolley for suspending a conveyed object, bypassing a work section for performing work on the conveyed object. A power rail provided, a lift free rail part that divides the work section free rail along the work section so that it can be moved up and down at the work position, and a series of continuous operation along the free rail over the entire length of the work section. It has a trolley pusher endless conveyor, wherein the lifting pretend to trolley pusher endless conveyor
-By a cam plate that is operated up and down at the rail position
Falling over and disengaging from the engaging part of the suspended trolley
A work zone transfer device in which free trolley pushing pieces are provided at equal pitches, and an engaging portion for engaging and disengaging the trolley pushing pieces is provided on one side of a trolley for holding a conveyed object.