JPS6315181B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor system in which an object to be conveyed, for example, an automobile body, is immersed in a treatment liquid tank as a pretreatment for electrocoating by means of a trolley conveyor equipped with a hanger for suspending the object to be conveyed. Provided is a trolley conveyor equipped with an object lifting prevention device that is effective in preventing the object from floating up from the hanger due to buoyancy when the object is immersed in the processing liquid tank in a production line. It is something to do.

An embodiment of the present invention will be described below based on the attached illustrative drawings. In FIGS. 1 and 2, 1
is a conveyance moving body, and is movably suspended from a guide rail 3a via a plurality of trolleys 2 in the front and rear directions, and includes a hanger 6 for hanging a conveyed object, which is composed of a pair of left and right hanger arms 4 and 5 that can be opened and closed. It is equipped with This conveyance moving body 1 has guide rails 3, similar to conventional trolley conveyors of this type.
It is propelled by a pusher attached to a drive chain guided by b, and is automatically stopped at a preset stop position.

The hanger arms 4 and 5 of the hanger 6 have a pair of front and rear vertical rods 7 connected to each other by a horizontal rod 8, and each of the vertical rods 7 has an attachment 9 for supporting a transported object connected to the lower end thereof. At positions near the rear end of each horizontal rod 8 in these hanger arms 4, 5, conveyed object lifting prevention devices 10, 11 are installed.
is installed.

The conveyed object lifting prevention device 10, 11
are configured to have left and right opposite sides, and are provided with an object holding device 12 and a locking means 13, as shown in FIGS. 3 to 5. The presser 12 has a disc-shaped base 12a rotatably pivoted to a support shaft 15 vertically erected from a bracket 14 fixed to the horizontal rod 8 of the hanger arm. A lever 17 for switching the presser position is connected to the lever 12a and has a vertically rotatable operated pin 16 on the lower side of the tip. The locking means 13 is selectively fitted into two recesses 18a and 18b provided around the disc-shaped base 12a of the presser 12 at an interval of 90 degrees. A lock pin 19 that can be vertically raised and lowered, and a pair of front and rear lock release operating levers 20 that raise the lock pin 19 against gravity.
a, 20b.

The lock pin 19 is connected to a pair of front and rear support shafts 21.
and the support shaft 15, the bracket 14
The operation lever 2 is connected to a cylindrical member 24 which is supported by a support plate 22 supported by a support plate 22 via an elevating guide 23 and which is fitted and fixed to the upper end of the lock pin 19.
0a and 20b are provided in a protruding manner. Reference numeral 25 denotes an elevating guide rod connected upwardly from the upper end of the support shaft 15, and a plate 26 is attached to the cylindrical member 24 and is loosely fitted to the elevating guide rod so as to be movable up and down.
27 is a stopper pin that the presser 12 comes into contact with when the presser 12 rotates from the retracted position A shown by the solid line in FIG. 4 to the operating position B shown by the imaginary line; One of the pair of front and rear support shafts 21 that support the support plate 22 serves as a stopper that comes into contact with the presser 12 when the support plate 22 is moved.

FIG. 6 shows a loading work position in which an object to be transported, in this case a car body 28, is loaded onto the hanger 6 of the transport vehicle 1, and the stopper 29
The body 2 is placed on the hanger 6 of the transportation moving body 1 which has been stopped at a predetermined position on the transfer device 30 by
8 are automatically loaded, and setting devices 31 and 32 for setting the anti-lifting devices 10 and 11 are provided at this working position.

The setting devices 31 and 32 are configured to have opposite left and right hands, and are provided with a lock release means 33 and a presser position switching means 34, as shown in FIGS. 7 to 9.

The lock release means 33 and the presser position switching means 34 are connected to the transporting movable body 1 stopped at a predetermined position via a slide guide 36 fixed to a fixed frame 35 and a slide lock 37 penetratingly supported by the slide guide 36. Each floating prevention device 10, 11
It is attached to a transverse movement frame 38 that is supported so as to be movable in the near and far directions. This lateral movement frame 38 is moved in and out by a cylinder unit 39.

The lock release means 33 includes a lifting guide 40 fixed to the lateral movement frame 38 and the lifting guide 4.
0, an elevating body 42 supported via an elevating rod 41 penetrating through the elevating body 41 so as to be movable up and down;
a cylinder unit 43 that moves up and down, and a pair of left and right U-shaped engagement plates 4 fixed to the elevating body 42.
4, and the presser position switching means 34 is supported so that its base is fitted into a guide rod 45 installed on the lateral motion frame 38 so as to be horizontally movable in parallel to the moving direction of the conveyance movable body 1. It is composed of a pusher 46 and a cylinder unit 47 for reciprocating the pusher 46.

The method of use will be explained below. As shown in FIG. 6, when the transportation vehicle 1 stops at the body loading work position and the body 28 is loaded onto the hanger 6 as shown in FIG. Before starting the moving body 1, both setting devices 3
The horizontal movement frames 38 of Nos. 1 and 32 are moved toward the hanger side by the cylinder unit 39 as shown by the imaginary lines in FIG. As a result, the pair of U-shaped engaging portions 44 of the lock release means 33 engage the pair of lock release operating levers 20a, 20 at the lower limit position.
b as shown in FIG. At this time,
Pusher 46 of presser position switching means 34
is in a position where it can horizontally push the operated pin 16 located at position a corresponding to the presser retracted position A, as shown in FIG.

Next, the cylinder unit 43 moves the elevating body 4
2 and raise the U-shaped engagement plate 44 to the upper limit position shown by the imaginary line in FIG. The lock pin 19 is inserted from the recess 18a in the plate-like base 12a.
is released upward to release the lock of the presser 12 at the retracted position A. In this state, the pusher 46 of the presser position switching means 34 is moved forward by the cylinder unit 47 to the stroke limit shown by the imaginary line in FIG. 17, the presser 12 is rotated to the operating position B shown by the imaginary line in FIG. As a result, as shown in FIG.
The first presser 12 is held at a predetermined position of the body 28 supported on the hanger 6, in this embodiment, the first
It is located so as to overlap the upper end 28b of the loading platform side walls 28a shown in the figure.

Thereafter, by lowering the U-shaped engagement plate 44 shown in FIG. 8 to the lower limit position shown by the solid line using the cylinder unit 43, the lock release lever
The lock pin 19 is lowered to its original position via 0a and 20b, and the lock pin 19 is fitted into the recess 18b of the disc-shaped base 12a of the presser 12. As a result, the presser foot 12 is locked in the operating position B.

Once the holding devices 12 of both anti-lifting devices 10 and 11 have been set to the lifting-preventing action position B of the body 28 as described above, the stopper 29 shown in FIG. 6 is released and the conveyance moving body 1 is started. , the body 28 can be sent to the pretreatment process of electrodeposition coating, but the body 28 can be sent to the pretreatment process of electrodeposition coating.
When the body 28 is immersed, the buoyant force acting on the body 28 causes the body 28 to be immersed in the hanger 6.
Even if it tries to lift up, the holding tools 12 of both lifting prevention devices 10 and 11 prevent it from lifting up.

At the working position where the body 28 is lowered from the hanger 6 or at the stopping position before that, the holding tool 12 of the lifting prevention devices 10 and 11 is
A reset device for returning from the service position B to the retracted position A is installed. This reset device includes a lock release operation means that is the same as the lock release operation means 33 of the setting devices 31 and 32, and a presser position switching means 34 that is operated by a pusher 46 to operate the pin 1.
6, the pressing movement direction is in the opposite direction. Therefore, both anti-lifting devices 10,
11 is returned to the retracted position A by the reset device and locked at the retracted position A, the hanger arms 4,
5 is opened, and the body 28 can be lowered from the hanger 6 by the lowering device.

The present invention can be implemented and used as described above, and the lifting of the transported object supported by the hanger can be reliably prevented by the holding tool of the lifting prevention device provided on the hanger, and the object can be transported safely. It is. Furthermore, the presser foot that prevents the hanger from lifting up is locked in the lifting prevention action position and the retracted position, so it is safe, and the release of this lock and the switching of the position of the presser footer can be automatically performed when the hanger is stopped. This makes it possible to streamline work.

[Brief explanation of the drawing]

Fig. 1 is a side view of the conveyor showing the conveyance state of the conveyed objects, Fig. 2 is a partially cutaway rear view thereof, Fig. 3 is a side view of the anti-lifting device, Fig. 4 is a plan view thereof, Fig. 5 6 is a schematic plan view of the work position for loading objects, FIG. 7 is a plan view of the setting device, FIG. 8 is a longitudinal sectional front view of the main parts, and FIG. 9 is a cross-sectional view of the same. It is a diagram. DESCRIPTION OF SYMBOLS 1... Conveyance moving body, 4, 5... Hanger arm, 6... Hanger, 10, 11... Lifting prevention device, 12... Presser, 13... Lock means, 16... Operated pin, 17 ... Lever for switching presser position, 18a, 18b ... Recess, 19
. . . Lock pin, 20a, 20b . . . Lock release operation lever, 28 .
38... Lateral movement frame, 39, 43, 47... Cylinder unit, 42... Lifting body, 44... U-shaped engagement plate, 46... Pusher.

Claims (1)

[Claims] 1. A trolley conveyor equipped with a hanger for suspending a conveyed object has a conveyed object holding device that can be switched between an active position and a retracted position to prevent the conveyed object from floating up, and the holding device is attached to each of the above-mentioned positions. A device for preventing lifting of conveyed objects is provided, which includes a locking means that locks at the stop position of the hanger, and a lock release operation that releases the presser by operating a lock release operation lever of the locking means. and a presser position switching means for switching the free presser from one of the operating position and the retracted position to the other.