JPS6222448Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a conveyed object transfer device in a carrier self-propelled conveyor.

Generally, on an automobile manufacturing line, there are an assembly conveyor that transports automobile parts at low speed and assembles them manually, and a carrier self-propelled overhead conveyor that connects these assembly conveyors. is set up. The self-propelled carrier is equipped with electric wheels that are pressed against the underside of the conveyor rail to pull the carrier, and a variable speed motor that drives or stops the electric wheels at three speeds, for example. A control device is provided. However, when transferring the objects conveyed by the carrier to the assembly conveyor, it is necessary to reduce the speed of the carrier to a considerably slow speed that is approximately equal to the conveyance speed of the assembly conveyor, and this is done using the electric wheel motor. In this case, it is necessary to set the motor to a considerably lower speed drive range in addition to the normal drive range, which causes the motor to have a special structure, which complicates its control and raises the problem of extremely high equipment costs. It was hot.

The purpose of this invention was to solve the above problems by equipping the self-propelled carrier of the conveyor with an inexpensive general-purpose motor and a normal control device, and in addition, converting the conveyor from an overhead conveyor exclusively used for transporting objects to an assembly conveyor. It is an object of the present invention to provide a transfer device for conveyed objects that can be smoothly transferred to the top.

This invention will be explained below based on embodiments shown in the drawings.

In the drawing, 1 is an upper conveyor, which is constituted by a carrier self-propelled overhead conveyor. A lower conveyor 2 is disposed below the carrier transfer portion of the upper conveyor 1, and is constituted by, for example, a belt conveyor. Reference numeral 3 denotes a rail of the upper conveyor 1, which is made of shaped steel. Reference numeral 6 denotes a self-propelled carrier suspended from the conveyor rail 3, which includes a pair of intermediate sub-trolleys 8 and 9 from which the hanger 7 is suspended, a main trolley 11 equipped with electric wheels 10 in front of these, and A pair of auxiliary trolleys 12 and 13 at the front and rear are provided.

Four rollers 16 hung on the rail 3 of the upper conveyor 1 and four horizontal steadying rollers 17 are attached to the pair of left and right side plates 15 of the main trolley 11, and electrically operated A wheel mounting arm 18 is swingably mounted on a shaft 19, and a horizontal bracket 20 is provided at the swinging end of the mounting arm 18 so as to extend rearward. Further, an electric wheel suspension rod 21 is suspended from an overhanging portion 15b at the rear end of the side plate 15, and this suspension rod 21 is inserted into a through hole of the horizontal bracket 20, and a spring receiver 22 is attached to the lower end of the electric wheel suspension rod 21. and two adjustment nuts 23 are attached, and a large number of disc springs 24 are fitted over the portion of the suspension rod 21 between the spring receiver 22 and the horizontal bracket 20, and the spring action of these disc springs 24 causes The swinging end of the electric wheel mounting arm 18 is always urged upward, thereby pressing the electric wheel 10 directly against the lower surface of the conveyor rail 3. Reference numeral 25 denotes a roller support body mounted in an upright manner at the tip of the horizontal bracket 20, and a roller 26 for preventing electric wheel vibration and pushing down is pivotally attached to the upper end of this body.
The upper end of the conveyor rail 3 is visible in close proximity to the lower surface of the conveyor rail 3.

27 is a solid tire attached to the periphery of the electric wheel 10; 28 is an electric wheel mounting arm 18;
is a drive mechanism installed coaxially with the electric wheel 10, which includes a general-purpose motor, a reducer, and a brake, and rotates the electric wheel 10 in three stages of low speed, medium speed, and high speed, or stops it. It is something that can be done.

29 is a dog engagement roller attached to the carrier 6 so as to protrude laterally; 30 is a conveyed object lifting device provided at the center of the hanger upper frame 31 of the carrier 6; and 32 is a device provided on both sides of the upper conveyor 1. These are carrier rocking guide rails arranged at intervals, and the carrier rocking prevention rollers 33 on both sides of the carrier 6 are brought into contact with these guide rails.

Reference numeral 34 designates an object to be transported suspended from the hanger 7 of the carrier 6.

35 is a carrier propulsion device disposed on one side of the conveyed object transfer portion of the upper conveyor 1, which is equipped with an endless drive chain 36;
A pair of tilting dots 37, 3 in two places at 6
8 are attached to each. Reference numeral 39 denotes a drive mechanism for the carrier propulsion device 35, which rotates the endless chain 36 at the same speed as the transport speed of the lower conveyor 2. Reference numeral 40 denotes an electric wheel separation cam provided at the side edge of the conveyor rail 3 in the conveyed object transfer portion of the upper conveyor 1.

In the above, the electric wheels 10 of the carrier 6 suspended from the upper conveyor 1 are always pressed against the lower surface of the conveyor rail 3 by the spring action of the disc spring 24, and by the rotation of the electric wheels 10, The carrier 6 is moved at a relatively fast speed. When the carrier 6 reaches the part of the upper conveyor 1 to be transferred, an electric wheel vibration prevention and pushing roller 26 provided on one side of the carrier 6 moves against the cam 4.
0 and is pushed down, the swinging end of the electric wheel mounting arm 18 is pushed down.
This allows the electric wheels 10 to be connected to the conveyor rail 3.
It is spaced apart from the bottom surface of. Since the electric wheels 10 do not come into contact with the lower surface of the rail 3 in this way, the carrier 6 stops naturally. Next, by operating the carrier propulsion device 35, the tilting dog 38 of the carrier propulsion device 35 and the engaging roller 2 of the carrier 6 are rotated.
9 are brought into engagement with each other, and then the carrier 6
is transported at approximately the same speed as the lower conveyor 2 by the operation of the propulsion device 35, and during this time the carrier 6
The conveyed objects 34 are lowered from the carrier 6 onto the lower conveyor 2 by the operation of the lifting device 30. When the carrier 6 reaches the terminal end of the propulsion device 35, the anti-vibration/pushing roller 26 is removed from the cam 40, and the electric wheel 10 is brought into contact with the lower surface of the rail 3 again by the action of the disc spring 24. , thereby causing the carrier 6 to be transported at a predetermined speed.

The conveyed object transfer device for the self-propelled conveyor according to this invention has the upper conveyor 1 as described above.
An electric wheel vibration prevention/pushing roller 26 is attached to the carrier 6 with electric wheels 10 that moves the conveyor, and an electric wheel separation cam 40 is provided on the side edge of the conveyed object transfer portion of the upper conveyor 1. A lower conveyor 2 whose conveyance speed is slower than that of the conveyor 1 is disposed below the conveyed object transfer area, and a carrier propulsion device 35 is provided with an engagement dog 38 that moves at approximately the same speed as the conveyance speed of the lower conveyor 2. moves along the lower edge of the roller 26 or cam 40 in the conveyed object transfer portion of the upper conveyor 1, and the electric wheels 10 of the carrier 6 are separated from the lower surface of the conveyor rail 3. In this state, An engagement dog 38 of a carrier propulsion device 35 is engaged with a dog engagement portion 29 of the carrier 6 provided in the carrier 6, and the operation of this propulsion device 35 causes the carrier 6 to be transferred at approximately the same speed as the lower conveyor 2. During this time, the conveyed objects 34 are transferred onto the lower conveyor 2 by a lifting device 30 provided in the carrier 6, and the conveyed objects 34 are transferred from the upper overhead conveyor 1 exclusively for transportation to the lower section for assembly. The conveyed object 34 can be transferred to the conveyor 2 extremely smoothly, and the electric wheels 10 of the carrier 6 do not need to be equipped with a motor of a special structure. In addition, it is sufficient to install the electric wheel vibration prevention/pushing roller 26 on the carrier 6 and the electric wheel pressing cam 14 in the part where the transported object is transferred, so the equipment cost can be reduced. Very cheap. In addition, the carrier propulsion device 35 has a simple structure and can be manufactured at low cost, and it can be extremely easily installed anywhere on the upper conveyor 1 together with the electric wheel push-down cam 14, and these can be used for lower assembly. This has the effect that it can be made to correspond reliably with the conveyor 2, and therefore the assembly manufacturing process of automobiles etc. can be carried out very advantageously.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention: Fig. 1 is a schematic side view, Fig. 2 is a partially enlarged side view, Fig. 3 is an enlarged sectional view along the line shown in Fig. 1, and Fig. 4 is an electric wheel. Enlarged side view of the part, Figure 5 is Figure 4-
It is an enlarged sectional view along the line. 1... Upper conveyor, 2... Lower conveyor, 3
...Conveyor rail, 6...Carrier, 7...
Hanger, 10... Electric wheel, 18... Electric wheel mounting arm, 24... Belleville spring, 25... Roller support, 26... Roller for preventing and pushing down electric wheel vibration, 29... Roller for dog engagement ( dog engaging portion), 34... object to be transported, 35... carrier propulsion mechanism, 37, 38... tilting dog (engaging dog), 40... cam for pushing down the electric wheel.

Claims (1)

[Scope of utility model registration request] A carrier 6 with electric wheels 10 that moves on the upper conveyor 1 is provided with electric wheel vibration prevention and pushing rollers 2.
6 is attached, and an electric wheel separation cam 40 is provided on the side edge of the conveyed object transfer portion of the upper conveyor 1. A conveyor 2 is disposed, and a carrier propulsion device 35 equipped with an engagement dog 38 that moves at approximately the same speed as the conveyance speed of the lower conveyor 2 is disposed on one side of the conveyed object transfer portion of the upper conveyor 1. By moving the roller 26 along the lower edge of the cam 40 in the conveyed object transfer portion, the electric wheels 10 of the carrier 6 are separated from the lower surface of the conveyor rail 3, and in this state, the carrier 6 equipped with The engagement dog 38 of the carrier propulsion device 35 is engaged with the dog engagement portion 29 of the carrier propulsion device 35, and the operation of the propulsion device 35 causes the carrier 6 to be transferred at approximately the same speed as the lower conveyor 2. A conveyed object transfer device in a carrier self-propelled conveyor, in which a conveyed object 34 is transferred onto a lower conveyor 2 by a raised and lowered lifting device 30.