JPS6040379Y2 - Transported object transfer device for carrier self-propelled conveyor - Google Patents

Description

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

Generally, on an automobile production line, there are an assembly conveyor that transports automobile parts at low speed and assembles them manually, and a carrier self-propelled overhead conveyor dedicated to transportation 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 on the carrier to the assembly conveyor, it is necessary to reduce the speed of the carrier to a fairly slow speed that is almost equal to the conveyance speed of the assembly conveyor, and this is done by 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. there were.

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, an overhead motor dedicated to transporting the conveyed objects.
To provide a transfer device for conveyed objects that can smoothly transfer objects from a conveyor onto an assembly conveyor.

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 designates the rail of the upper conveyor 1. This is a rail body 3a made of a type steel material, and a flat plate 4 having a predetermined thickness is attached to the center of the lower surface of the rail body 3a, and guide protrusions 5 are provided on both side edges of the lower surface. This is what is being done.

In the conveyed object transfer section of the upper conveyor 1, flat
A portion of the plate 4 has been removed to form a flat plate cutout 14.

6 is 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, A pair of auxiliary trolleys 1 at the front and rear
2.13.

Four rollers 16 hung on the rail 3 of the upper conveyor 1 and four horizontal steadying rollers 17 are attached to a pair of left and right side plates 15 of the main conveyor 11, and an overhanging portion 15a at the front end of the side plate is attached. Electric wheels are installed on arm 18
is swingably mounted on a shaft 19, and a horizontal bracket 20 is provided at the swinging end of the arm 18 so as to extend rearward.

In addition, the electric wheel mounting rod 2 is attached to the overhanging portion 15b at the rear end of the side plate 15.
The suspension rod 21 is inserted into the through hole of the horizontal bracket 20, and a spring receiver 22 and two adjustment nuts 23 are attached to the lower end of the suspension rod 21. A large number of disc springs 24 are fitted over the part of the suspension rod 21 between the horizontal bracket 22 and the horizontal bracket 20, and the spring action of these disc springs 24 ensures that the swinging end of the arm 18 is always attached upward when mounting the electric wheel. This causes the electric wheels 10 to move flat on the underside of the conveyor rail 3.
It is pressed against the plate 4.

Reference numeral 25 denotes a roller support body mounted in an upright manner at the tip of the horizontal bracket 20. A motorized wheel vibration prevention roller 26 is pivotally attached to the upper end of the roller support body. It is visible on the guide protrusion 5.

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

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 denotes an object to be transported suspended from the hanger 7 of the carrier 6.

Reference numeral 35 denotes 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 chino 36, and a pair of tilting dogs 37, 38 are attached to each.

39 is the drive mechanism of the carrier propulsion device 35, and the endless chain 3
6 is rotated at the same speed as the transport speed of the lower conveyor 2.

In the above, the carrier 6 suspended from the upper conveyor 1
The electric wheel 10 is always pressed against the lower surface of the flat plate 4 of the conveyor rail 3 by the spring action of the disc spring 24, and the rotation of the electric wheel 10 allows the carrier 6 to be transferred at a relatively fast speed. .

When the carrier 6 reaches the part of the upper conveyor 1 to be transferred, the upper end of the electric wheel 10 fits into the flat plate cutout 14, and the electric wheel 10 is slightly lifted by the action of the disc spring 24. , does not come into contact with the lower surface of the rail main body 3a made of type steel material.

That is, the thickness of the flat plate 4 is equal to that of the disc spring 24.
In consideration of the so-called free length of the rail body 3a, the electric wheels 10 are set in advance so as not to come into contact with the lower surface of the rail body 3a.

In this way, the carrier 6 stops naturally because the electric wheels 10 do not come into contact with the lower surface of the rail body 3a.

Next, the operation of the carrier propulsion device 35 causes its tilting dog 38 and the engaging roller 29 of the carrier 6.
are engaged with each other, and then the carrier 6 is transferred at approximately the same speed as the lower conveyor 2 by the operation of the propulsion device 35, and during this time, the conveyed object 34 of the carrier 6 is moved from the carrier 6 by the operation of the lifting device 30. It is lowered onto the lower conveyor 2.

When the carrier 6 reaches the end of the propulsion device 35, the engagement roller 29 and the tilting dog 38 are disengaged, and the electric wheels 10 reach the end of the flat plate cutout 14 and there. Then, it is again pressed against the lower surface of the flat plate 4.

Thereafter, the carrier 6 is moved at a relatively fast speed by rotation of the electric wheels 10.

As described above, the conveyed object transfer device for a self-propelled conveyor according to this invention has a flat surface having a predetermined thickness on the lower surface of the conveyor rail 3 of the upper conveyor 1 equipped with the self-propelled carrier 6 with electric wheels 10. A plate 4 is attached to the conveyor 1, and a flat plate cut-out part 14 for electric wheel separation is provided in the conveyor 1's conveyed object transfer section, and a flat plate part 14 for separating electric wheels is provided below the conveyor 1's conveyance speed. A slow lower conveyor 2 is disposed, and a carrier propulsion device 35 equipped with an engagement dock 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. , the electric wheels 10 of the carrier 6 are separated from the surface of the conveyor rail 3 by the flat plate cut-out portion 14 at the conveyed object transfer portion, and in this state, the carrier 6 is attached to the dog retaining portion 29 provided on the carrier 6. The engagement dock 38 of the propulsion device 35 is engaged, 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. During this time, the lifting device 30 provided on the carrier 6 moves the object to be transported. 34 is adapted to be transferred onto the lower conveyor 2, and the conveyed objects 3 are transferred from the upper overhead conveyor 1 exclusively for transportation to the lower assembly conveyor 2.
4 can be carried out extremely smoothly, and there is no need to equip the carrier 6d electric wheel 10 with a motor of a special structure, and it is sufficient to equip it with a commercially available inexpensive general-purpose motor and its control device. Since it is only necessary to attach a flat plate 4 having a predetermined thickness to the lower surface of the conveyor rail 3 and to provide a flat plate cutout 14 at the part where transferred objects are transferred, the equipment cost is extremely low.

Further, the carrier propulsion device 35 has a simple structure and can be manufactured at low cost, and also has a flat rail missing portion 14.
can be very easily installed anywhere on the upper conveyor 1 together with the lower assembly conveyor 2.
Therefore, it is possible to carry out the assembly manufacturing process of automobiles etc. very advantageously.

[Brief explanation of drawings]

The drawings show an embodiment of this invention. Figure 1 is a schematic side view, Figure 2 is a partially enlarged side view, and Figure 3 is a diagram of Figures 1 - ■.
FIG. 4 is an enlarged side view of the electric wheel portion, and FIG. 5 is an enlarged sectional view taken along the line ■-■ in FIG. 1... Upper conveyor, 2... Lower conveyor, 3... Conveyor rail, 4...
・Flat plate, 6...Carrier, 7.
...Hanger, 10...Electric wheel, 14.
...Flat plate missing part, 18...
・For electric wheel installation, use the arm, 24... Disc spring, 25.
...Roller support body, 26...Roller for electric wheel vibration prevention, 29...Roller for dog engagement (dog engagement part), 34...Transported Things, 35.
...Carrier propulsion mechanism, 37.38...
Tilting dog (engaging dog).

Claims (1)

[Scope of utility model registration request] A flat plate 4 having a predetermined thickness is attached to the lower surface of the conveyor rail 3 of the upper conveyor 1, which is equipped with a self-propelled carrier 6 with electric wheels 10. A lower conveyor 2, which has a slower conveyance speed than the conveyor 1, is arranged below the conveyed object transfer area, and moves at approximately the same speed as the conveyance speed of the lower conveyor 2. A carrier propulsion device 35 equipped with a holding dock 38 is disposed on one side of the conveyed object transfer portion of the upper conveyor 1,
At the conveyed object transfer portion, the electric wheels 10 of the carrier 6 are separated from the conveyor rail 3 surface by the flat plate cutout 14, and in this state, the dog engaging portion 29 provided on the carrier 6 propels the carrier. The engaging dock 38 of the device 35 is engaged, 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. During this time, the lifting device 30 provided on the carrier 6 moves the transported object 34. A conveyed object transfer device for a carrier self-propelled conveyor, in which objects are transferred onto a lower conveyor 2.