JPS63247220A - Height adjustor for transfer conveyor - Google Patents

Abstract

PURPOSE:To permit the smooth transfer by adjusting the height in the vertical direction of the top edge part of a transfer conveyor according to the direction of transfer, in the transfer conveyor for automatic transport in a factory, etc. CONSTITUTION:In the transfer between a transferring conveyor 2 and an unmanned transport vehicle 22, for example when a transported article P1 is transferred from the conveyor 2 to the transport vehicle 22, the cylinder 4 of the transferring conveyor 2 is extended to allow a collision detecting switch 18 to contact the transport vehicle 22. Then the cylinder 6 is extended to lift up the top edge of a conveyor 7 until an upper limit switch 13 is turned ON. Therefore, the height of the rollers 16-1,... of the conveyor 2 is set slightly higher than that of the rollers 24-1,... of the transport vehicle 22. The roller 16-1 is driven in this state and the load P1 is sent to the transport vehicle 22 side, and then transferred onto the transport vehicle 22 free from collision. In the reverse transfer, the height is set low. With such constitution, smooth transfer is permitted.

Description

Detailed Description of the Invention "Field of Industrial Application" This invention relates to a transfer conveyor used for automatic transportation in factories, etc., and in particular, the height of the conveyor can be adjusted up or down depending on the direction in which the conveyed object is being transferred. The present invention relates to a height adjustment device for a transfer conveyor that can be adjusted to perform smooth transfer.

"Prior Art" Conventionally, in factories and the like, elevators have been used to move luggage, and luggage is transferred between a conveyor inside the elevator and a conveyor outside the elevator.

``Problem to be Solved by the Invention'' By the way, when stopping an elevator, it is difficult to accurately control the stopping position of the elevator because the elongation of the wire that pulls the elevator changes depending on the weight of the cargo. It is difficult, about ±15 from the predetermined stopping position.
There may be a deviation of about mm. As a result, the heights of the conveyor inside the elevator and the conveyor outside the elevator are misaligned, and when transferring cargo, the cargo may collide with the conveyor on the side to be transferred, making it impossible to transfer the cargo smoothly. As a countermeasure against such failures, the stopping accuracy of elevators has been increased by ±5.
If you try to make it around mm, it will cost a lot of money. Furthermore, as shown in Figure 2, if the height of the conveyor inside the elevator is adjusted using a lifter to match the height of the conveyor belt outside the elevator, the dimensions of the conveyor device will become thicker and costs will increase. It ends up.

This invention was made in view of the above circumstances, and its purpose is to adjust the height of the transfer conveyor so that the object can be smoothly transferred when the object is transferred between the conveyors. The goal is to provide equipment.

"Means for Solving the Problems" The present invention provides a transfer conveyor for transferring objects, in which the objects are delivered at the leading end and rotatably supported at the rear end. , a driving member that drives the tip of the conveyor up and down, and drives the tip of the conveyor up and down in accordance with the transfer direction of the conveyed object.

"Operation" The height adjustment device for a transfer conveyor according to the present invention drives the tip of the conveyor up and down in accordance with the transfer direction J of the transported object.

As a result, the height of the conveyor on the side to which the transported object is transferred can be made higher than the height of the conveyor on the side to be transferred. There will be no collision, and the transfer can be carried out smoothly.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, numeral 1 is an elevator;
A transfer conveyor 2 is attached inside. This transfer conveyor 2 can be roughly divided into base 3. Power cylinder 4. Slide frame 5. Power cylinder 6, conveyor 7
It consists of The base 3 is formed into a rectangular platform shape and is fixed on the floor surface of the elevator 1. This base 3
Edges 3a and 3b are formed on both sides of the power cylinder 4° advance limit switch 8. on the top surface in the longitudinal direction. A reverse limit switch 9 is attached. The power cylinder 4 expands and contracts the cylinder rod 4a using hydraulic pressure or the like.

Then, a protrusion 10 attached to the cylinder rod 4a
collides with switches 8.9, these switches 8.
．． 9 is turned on. Here, when the transfer conveyor 2 is in a rest state shown by the solid line in FIG. 1, the backward limit switch 9 is on. Furthermore, a slide frame 5 is placed on the edges 3a and 3b of the base 3. The slide frame 5 is formed into a chair shape, and its front leg portion 5
The tip of the cylinder rod 4a is connected to a, and rollers 11-1 to 11-4 are rotatably attached to the tips of the six legs. When the cylinder rod 4a expands and contracts, the rollers 11-1 to 11-4 rotate, and the frame 5 slides on the edge portion 3a (3b). In addition, the protrusion 5b formed on the front leg portion 5a of the frame 5 includes
The power cylinder 6 is installed vertically. A metal fitting 12 attached to the cylindrical portion of the power cylinder 6 includes an upper limit switch 13. A lower limit switch I4 is attached. Then, the cylinder rod 6a expands and contracts, and the protrusion 15 attached to the rod 6a moves to the switch 13.
．． 14 turns on these switches 13,14. Further, the rear end of the conveyor 7 is rotatably attached to the upper end of the back portion 5c of the frame 5, and the end of the rod 6a of the cylinder 6 is attached to the rear end of the conveyor 7. The tip is rotatably connected. The conveyor 7 is a roller type conveyor equipped with rollers 16-1... and is driven by an electric motor (not shown).
rotates. A collision detection switch I8 is attached to the tip of the conveyor 7 and is turned on when the tip is pushed. Next, 19-1.19-2 is the elevator l
20 is the outer door of the elevator room, 21 is the inner door of the elevator l, 22 is an automatic guided vehicle for transporting objects, 23 to 1.23-2 are the guided vehicle 22
wheels, 24-1... are rollers of a conveyor attached to the transport vehicle 22, 25 is a groove provided along the traveling route of the transport vehicle 22, and 26 is a guide signal that transmits a guidance signal to the transport vehicle 22. A cable provided in the groove 25 to
, P2 are objects to be transported. Note that the transferred objects are transferred between the transfer conveyor 2 and the transport vehicle 22, but the elevator 1
Considering the stopping accuracy (approximately ±15 mm), the expansion and contraction range of the rod 6a of the cylinder 6 is set so that the conveyor on the transfer side is always slightly higher than the conveyor on the transfer side.

Next, the operation of the embodiment described above will be explained.

In addition, in Fig. 1, the conveyed object PI is
, P2 are loaded, but when the transfer is performed, it is assumed that the conveyor on which the transported objects are transferred is empty. First, when transferring the transported object PI from the transfer conveyor 2 in the elevator 1 to the automatic guided vehicle 22, after the elevator 1 stops as shown in FIG. It is guided to the front of the outer door 20 and stops.

Then, the outer door 20 and the inner door 2I of the elevator 1 are opened in order. Next, the cylinder 4 of the transfer conveyor 2 is pushed out and the frame 5 and conveyor 7 are driven until the collision detection switch 18 hits the body of the transport vehicle 22 and is turned on, or the forward limit switch 8 is turned on. being pushed out. Next, the cylinder 6 is pushed out until the upper limit switch 13 is turned on.
The tip of the con hair 7 is lifted. In this state,
The tip of the conveyor 7 is raised to the position indicated by the chain line Δ, and the height of the rollers 16-1...
The height of the rollers 24-1 is slightly higher than that of the rollers 24-1. Next, the electric motor is driven to move the rollers 16-1 and 16-1.
* rotates, and the transported object PI is transferred onto the rollers 24-1 of the transport vehicle 22 without colliding with the transport vehicle 22. Then, the rotation of the rollers 16-1 is stopped, the cylinder 4 is retracted, and the frame 5 and the conveyor 7 are moved backward until the backward limit switch 9 is turned on.

Next, when transferring the transported object P2 from the automatic guided vehicle 22 to the transfer hub 2-to within the elevator 1, the guided vehicle 22 is guided to the position of the outer door 20 of the elevator room as shown in FIG. After the elevator stops, elevator 1 is called,
Stop. And outer door 20, inner door 2I of elevator l
is opened, then the cylinder 4 is driven to push out,
” The frame 5 and the conveyor 7 are pushed out in a double series.

Next, the cylinder 6 is retracted and the tip of the conveyor 7 is lowered until the lower limit switch 4 is turned on. In this state, the tip of the con hair 7 is lowered to the position shown by the chain line B, and the rollers 16-1...
The height of the rollers 24-1 of the transport vehicle 22 is slightly lower than the height of the rollers 24-1 of the transport vehicle 22. And roller 24-■...
is rotationally driven, and the conveyed object P2 is transferred onto the roller 16-1 of the conveyor 7 without colliding with the conveyor 7.

Next, the cylinder 4 is driven to retract, and the frame 5 and conveyor 7 are moved backward until the backward limit switch 9 is turned on as described above.

In addition, in the above embodiment, the conveyor 7 that is carried out at the time of transfer is
Although the lowering of the tip end is controlled by the limit switches 13 and 14, the following may be used instead. That is, a reflector is attached to the tip of the conveyor of the automatic guided vehicle 22, a photoelectric switch is attached to the tip of the conveyor 7, and the rod 6 of the cylinder 6 is attached to the tip of the conveyor 7.
A control device is provided to control the amount of expansion and contraction of the rod 6a, and the amount of expansion and contraction of the rod 6a is changed until the photoelectric switch detects the reflection plate, and when the photoelectric switch detects the reflection plate, the conveyor on the transfer side is moved as described above. The height of the conveyor may be set to be slightly higher than the conveyor on the side to be transferred.

``Effects of the Invention'' As explained above, the height adjustment device for a transfer conveyor according to the present invention? Accordingly, the height of the conveyor on the side to which the conveyed object is transferred can be made two times higher than the height of the conveyor on the side to which the conveyed object is transferred, so that the height of the conveyor on the side to which the conveyed object is transferred can be set to 2. There will be no collision with the conveyor belt, and the transfer can be carried out smoothly.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a transfer conveyor 2 used in an embodiment of the present invention, and FIG. 2 is a diagram showing a lift type conveyor height adjustment device. 2... Transfer conveyor, 6... Power cylinder, 6a... Solinda rondo, 7
Conveyor, 13.14... Upper and lower limit switch, 15... Projection, 16-1
...Rollers of conveyor 7, 22... Automatic guided vehicle, 24-1 Conveyor rollers of automatic guided vehicle 22, PI, P2... Conveyed object.

Claims (1)

[Claims] A transfer conveyor that transfers objects to be transported includes a conveyor to which the objects are transferred at a leading end and rotatably supported at a rear end, and a drive member that drives the leading end of the conveyor up and down. A height adjustment device for a transfer conveyor, characterized in that the top end of the conveyor is driven up and down according to the transfer direction of the conveyed object.